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stk-code_catmod/lib/irrlicht/source/Irrlicht/COpenGLDriver.cpp
Deve e00995d099 Allow to use GLES renderer with Wayland device. 
It would be nice to simplify it a bit, i.e. decide if OpenGL context should be created on device side or driver side, use single constructor in GLES driver etc... But I'm not really sure how it will look like after Benau's space partitioning work, so some refactoring postponed till later.
2017-05-30 00:30:00 +02:00

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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
extern bool GLContextDebugBit;
#include "COpenGLDriver.h"
// needed here also because of the create methods' parameters
#include "CNullDriver.h"
#ifdef _IRR_COMPILE_WITH_OPENGL_
#include "COpenGLMaterialRenderer.h"
#include "COpenGLShaderMaterialRenderer.h"
#include "COpenGLSLMaterialRenderer.h"
#include "COpenGLNormalMapRenderer.h"
#include "COpenGLParallaxMapRenderer.h"
#include "os.h"
#ifdef _IRR_COMPILE_WITH_SDL_DEVICE_
#include <SDL/SDL.h>
#endif
#ifdef _IRR_COMPILE_WITH_OSX_DEVICE_
#include "MacOSX/CIrrDeviceMacOSX.h"
#endif
#ifdef _IRR_COMPILE_WITH_WAYLAND_DEVICE_
#include "CIrrDeviceWayland.h"
#include "CContextEGL.h"
#endif
namespace irr
{
namespace video
{
bool useCoreContext;
// -----------------------------------------------------------------------
// WINDOWS CONSTRUCTOR
// -----------------------------------------------------------------------
#ifdef _IRR_COMPILE_WITH_WINDOWS_DEVICE_
//! Windows constructor and init code
COpenGLDriver::COpenGLDriver(const irr::SIrrlichtCreationParameters& params,
io::IFileSystem* io, CIrrDeviceWin32* device)
: CNullDriver(io, params.WindowSize), COpenGLExtensionHandler(),
CurrentRenderMode(ERM_NONE), ResetRenderStates(true), Transformation3DChanged(true),
AntiAlias(params.AntiAlias), RenderTargetTexture(0),
CurrentRendertargetSize(0,0), ColorFormat(ECF_R8G8B8),
CurrentTarget(ERT_FRAME_BUFFER), Params(params),
HDc(0), Window(static_cast<HWND>(params.WindowId)), Win32Device(device),
DeviceType(EIDT_WIN32)
{
#ifdef _DEBUG
setDebugName("COpenGLDriver");
#endif
}
bool COpenGLDriver::changeRenderContext(const SExposedVideoData& videoData, CIrrDeviceWin32* device)
{
if (videoData.OpenGLWin32.HWnd && videoData.OpenGLWin32.HDc && videoData.OpenGLWin32.HRc)
{
if (!wglMakeCurrent((HDC)videoData.OpenGLWin32.HDc, (HGLRC)videoData.OpenGLWin32.HRc))
{
os::Printer::log("Render Context switch failed.");
return false;
}
else
{
HDc = (HDC)videoData.OpenGLWin32.HDc;
}
}
// set back to main context
else if (HDc != ExposedData.OpenGLWin32.HDc)
{
if (!wglMakeCurrent((HDC)ExposedData.OpenGLWin32.HDc, (HGLRC)ExposedData.OpenGLWin32.HRc))
{
os::Printer::log("Render Context switch failed.");
return false;
}
else
{
HDc = (HDC)ExposedData.OpenGLWin32.HDc;
}
}
return true;
}
static PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribs_ARB;
static HGLRC getMeAGLContext(HDC HDc, bool force_legacy_context)
{
if (!force_legacy_context)
{
useCoreContext = true;
HGLRC hrc = 0;
int ctx44debug[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, 4,
WGL_CONTEXT_MINOR_VERSION_ARB, 3,
WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_DEBUG_BIT_ARB,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
int ctx44[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, 4,
WGL_CONTEXT_MINOR_VERSION_ARB, 3,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
hrc = wglCreateContextAttribs_ARB(HDc, 0, GLContextDebugBit ? ctx44debug : ctx44);
if (hrc)
return hrc;
int ctx40debug[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, 4,
WGL_CONTEXT_MINOR_VERSION_ARB, 0,
WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_DEBUG_BIT_ARB,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
int ctx40[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, 4,
WGL_CONTEXT_MINOR_VERSION_ARB, 0,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
hrc = wglCreateContextAttribs_ARB(HDc, 0, GLContextDebugBit ? ctx40debug : ctx40);
if (hrc)
return hrc;
int ctx33debug[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
WGL_CONTEXT_MINOR_VERSION_ARB, 3,
WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_DEBUG_BIT_ARB,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
int ctx33[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
WGL_CONTEXT_MINOR_VERSION_ARB, 3,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
hrc = wglCreateContextAttribs_ARB(HDc, 0, GLContextDebugBit ? ctx33debug : ctx33);
if (hrc)
return hrc;
int ctx31debug[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
WGL_CONTEXT_MINOR_VERSION_ARB, 1,
WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_DEBUG_BIT_ARB,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
int ctx31[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
WGL_CONTEXT_MINOR_VERSION_ARB, 1,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
hrc = wglCreateContextAttribs_ARB(HDc, 0, GLContextDebugBit ? ctx31debug : ctx31);
if (hrc)
return hrc;
} // if (!force_legacy_context)
useCoreContext = false;
int legacyctx[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, 2,
WGL_CONTEXT_MINOR_VERSION_ARB, 1,
0
};
HGLRC hrc = wglCreateContextAttribs_ARB(HDc, 0, legacyctx);
if (hrc)
return hrc;
return NULL;
}
//! inits the open gl driver
bool COpenGLDriver::initDriver(CIrrDeviceWin32* device)
{
// Create a window to test antialiasing support
const fschar_t* ClassName = __TEXT("GLCIrrDeviceWin32");
HINSTANCE lhInstance = GetModuleHandle(0);
// Register Class
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = (WNDPROC)DefWindowProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = lhInstance;
wcex.hIcon = NULL;
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = 0;
wcex.lpszClassName = ClassName;
wcex.hIconSm = 0;
wcex.hIcon = 0;
RegisterClassEx(&wcex);
RECT clientSize;
clientSize.top = 0;
clientSize.left = 0;
clientSize.right = Params.WindowSize.Width;
clientSize.bottom = Params.WindowSize.Height;
DWORD style = WS_POPUP;
if (!Params.Fullscreen)
style = WS_SYSMENU | WS_BORDER | WS_CAPTION | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
AdjustWindowRect(&clientSize, style, FALSE);
const s32 realWidth = clientSize.right - clientSize.left;
const s32 realHeight = clientSize.bottom - clientSize.top;
const s32 windowLeft = (GetSystemMetrics(SM_CXSCREEN) - realWidth) / 2;
const s32 windowTop = (GetSystemMetrics(SM_CYSCREEN) - realHeight) / 2;
HWND temporary_wnd=CreateWindow(ClassName, __TEXT(""), style, windowLeft,
windowTop, realWidth, realHeight, NULL, NULL, lhInstance, NULL);
if (!temporary_wnd)
{
os::Printer::log("Cannot create a temporary window.", ELL_ERROR);
UnregisterClass(ClassName, lhInstance);
return false;
}
HDc = GetDC(temporary_wnd);
// Set up pixel format descriptor with desired parameters
PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor
1, // Version Number
PFD_DRAW_TO_WINDOW | // Format Must Support Window
PFD_SUPPORT_OPENGL | // Format Must Support OpenGL
(Params.Doublebuffer?PFD_DOUBLEBUFFER:0) | // Must Support Double Buffering
(Params.Stereobuffer?PFD_STEREO:0), // Must Support Stereo Buffer
PFD_TYPE_RGBA, // Request An RGBA Format
Params.Bits, // Select Our Color Depth
0, 0, 0, 0, 0, 0, // Color Bits Ignored
0, // No Alpha Buffer
0, // Shift Bit Ignored
0, // No Accumulation Buffer
0, 0, 0, 0, // Accumulation Bits Ignored
Params.ZBufferBits, // Z-Buffer (Depth Buffer)
BYTE(Params.Stencilbuffer ? 1 : 0), // Stencil Buffer Depth
0, // No Auxiliary Buffer
PFD_MAIN_PLANE, // Main Drawing Layer
0, // Reserved
0, 0, 0 // Layer Masks Ignored
};
GLuint PixelFormat;
for (u32 i=0; i<6; ++i)
{
if (i == 1)
{
if (Params.Stencilbuffer)
{
os::Printer::log("Cannot create a GL device with stencil buffer, disabling stencil shadows.", ELL_WARNING);
Params.Stencilbuffer = false;
pfd.cStencilBits = 0;
}
else
continue;
}
else
if (i == 2)
{
pfd.cDepthBits = 24;
}
else
if (i == 3)
{
if (Params.Bits!=16)
pfd.cDepthBits = 16;
else
continue;
}
else
if (i == 4)
{
// try single buffer
if (Params.Doublebuffer)
pfd.dwFlags &= ~PFD_DOUBLEBUFFER;
else
continue;
}
else
if (i == 5)
{
os::Printer::log("Cannot create a GL device context", "No suitable format for temporary window.", ELL_ERROR);
ReleaseDC(temporary_wnd, HDc);
DestroyWindow(temporary_wnd);
UnregisterClass(ClassName, lhInstance);
return false;
}
// choose pixelformat
PixelFormat = ChoosePixelFormat(HDc, &pfd);
if (PixelFormat)
break;
}
SetPixelFormat(HDc, PixelFormat, &pfd);
HGLRC hrc=wglCreateContext(HDc);
if (!hrc)
{
os::Printer::log("Cannot create a temporary GL rendering context.", ELL_ERROR);
ReleaseDC(temporary_wnd, HDc);
DestroyWindow(temporary_wnd);
UnregisterClass(ClassName, lhInstance);
return false;
}
SExposedVideoData data;
data.OpenGLWin32.HDc = HDc;
data.OpenGLWin32.HRc = hrc;
data.OpenGLWin32.HWnd = temporary_wnd;
if (!changeRenderContext(data, device))
{
os::Printer::log("Cannot activate a temporary GL rendering context.", ELL_ERROR);
wglDeleteContext(hrc);
ReleaseDC(temporary_wnd, HDc);
DestroyWindow(temporary_wnd);
UnregisterClass(ClassName, lhInstance);
return false;
}
core::stringc wglExtensions;
#ifdef WGL_ARB_extensions_string
PFNWGLGETEXTENSIONSSTRINGARBPROC irrGetExtensionsString = (PFNWGLGETEXTENSIONSSTRINGARBPROC)wglGetProcAddress("wglGetExtensionsStringARB");
if (irrGetExtensionsString)
wglExtensions = irrGetExtensionsString(HDc);
#elif defined(WGL_EXT_extensions_string)
PFNWGLGETEXTENSIONSSTRINGEXTPROC irrGetExtensionsString = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)wglGetProcAddress("wglGetExtensionsStringEXT");
if (irrGetExtensionsString)
wglExtensions = irrGetExtensionsString(HDc);
#endif
const bool pixel_format_supported = (wglExtensions.find("WGL_ARB_pixel_format") != -1);
const bool multi_sample_supported = ((wglExtensions.find("WGL_ARB_multisample") != -1) ||
(wglExtensions.find("WGL_EXT_multisample") != -1) || (wglExtensions.find("WGL_3DFX_multisample") != -1) );
#ifdef _DEBUG
os::Printer::log("WGL_extensions", wglExtensions);
#endif
#ifdef WGL_ARB_pixel_format
PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormat_ARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
if (pixel_format_supported && wglChoosePixelFormat_ARB)
{
// This value determines the number of samples used for antialiasing
// My experience is that 8 does not show a big
// improvement over 4, but 4 shows a big improvement
// over 2.
if(AntiAlias > 32)
AntiAlias = 32;
f32 fAttributes[] = {0.0, 0.0};
s32 iAttributes[] =
{
WGL_DRAW_TO_WINDOW_ARB,1,
WGL_SUPPORT_OPENGL_ARB,1,
WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
WGL_COLOR_BITS_ARB,(Params.Bits==32) ? 24 : 15,
WGL_ALPHA_BITS_ARB,(Params.Bits==32) ? 8 : 1,
WGL_DEPTH_BITS_ARB,Params.ZBufferBits, // 10,11
WGL_STENCIL_BITS_ARB,Params.Stencilbuffer ? 1 : 0,
WGL_DOUBLE_BUFFER_ARB,Params.Doublebuffer ? 1 : 0,
WGL_STEREO_ARB,Params.Stereobuffer ? 1 : 0,
WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB,
#ifdef WGL_ARB_multisample
WGL_SAMPLES_ARB,AntiAlias, // 20,21
WGL_SAMPLE_BUFFERS_ARB, 1,
#elif defined(WGL_EXT_multisample)
WGL_SAMPLES_EXT,AntiAlias, // 20,21
WGL_SAMPLE_BUFFERS_EXT, 1,
#elif defined(WGL_3DFX_multisample)
WGL_SAMPLES_3DFX,AntiAlias, // 20,21
WGL_SAMPLE_BUFFERS_3DFX, 1,
#endif
#ifdef WGL_ARB_framebuffer_sRGB
WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB, Params.HandleSRGB ? 1:0,
#elif defined(WGL_EXT_framebuffer_sRGB)
WGL_FRAMEBUFFER_SRGB_CAPABLE_EXT, Params.HandleSRGB ? 1:0,
#endif
// WGL_DEPTH_FLOAT_EXT, 1,
0,0,0,0
};
int iAttrSize = sizeof(iAttributes)/sizeof(int);
const bool framebuffer_srgb_supported = ((wglExtensions.find("WGL_ARB_framebuffer_sRGB") != -1) ||
(wglExtensions.find("WGL_EXT_framebuffer_sRGB") != -1));
if (!framebuffer_srgb_supported)
{
memmove(&iAttributes[24],&iAttributes[26],sizeof(int)*(iAttrSize-26));
iAttrSize -= 2;
}
if (!multi_sample_supported)
{
memmove(&iAttributes[20],&iAttributes[24],sizeof(int)*(iAttrSize-24));
iAttrSize -= 4;
}
s32 rv=0;
// Try to get an acceptable pixel format
do
{
int pixelFormat=0;
UINT numFormats=0;
const BOOL valid = wglChoosePixelFormat_ARB(HDc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
if (valid && numFormats)
rv = pixelFormat;
else
iAttributes[21] -= 1;
}
while(rv==0 && iAttributes[21]>1);
if (rv)
{
PixelFormat=rv;
AntiAlias=iAttributes[21];
}
}
else
#endif
AntiAlias=0;
#ifdef WGL_ARB_create_context
wglCreateContextAttribs_ARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
#endif
wglMakeCurrent(HDc, NULL);
wglDeleteContext(hrc);
ReleaseDC(temporary_wnd, HDc);
DestroyWindow(temporary_wnd);
UnregisterClass(ClassName, lhInstance);
// get hdc
HDc=GetDC(Window);
if (!HDc)
{
os::Printer::log("Cannot create a GL device context.", ELL_ERROR);
return false;
}
// search for pixel format the simple way
if (PixelFormat==0 || (!SetPixelFormat(HDc, PixelFormat, &pfd)))
{
for (u32 i=0; i<5; ++i)
{
if (i == 1)
{
if (Params.Stencilbuffer)
{
os::Printer::log("Cannot create a GL device with stencil buffer, disabling stencil shadows.", ELL_WARNING);
Params.Stencilbuffer = false;
pfd.cStencilBits = 0;
}
else
continue;
}
else
if (i == 2)
{
pfd.cDepthBits = 24;
}
if (i == 3)
{
if (Params.Bits!=16)
pfd.cDepthBits = 16;
else
continue;
}
else
if (i == 4)
{
os::Printer::log("Cannot create a GL device context", "No suitable format.", ELL_ERROR);
return false;
}
// choose pixelformat
PixelFormat = ChoosePixelFormat(HDc, &pfd);
if (PixelFormat)
break;
}
}
// set pixel format
if (!SetPixelFormat(HDc, PixelFormat, &pfd))
{
os::Printer::log("Cannot set the pixel format.", ELL_ERROR);
return false;
}
os::Printer::log("Pixel Format", core::stringc(PixelFormat).c_str(), ELL_DEBUG);
// create rendering context
#ifdef WGL_ARB_create_context
if (wglCreateContextAttribs_ARB)
{
hrc = getMeAGLContext(HDc, Params.ForceLegacyDevice);
}
else
#endif
hrc=wglCreateContext(HDc);
if (!hrc)
{
os::Printer::log("Cannot create a GL rendering context.", ELL_ERROR);
return false;
}
// set exposed data
ExposedData.OpenGLWin32.HDc = HDc;
ExposedData.OpenGLWin32.HRc = hrc;
ExposedData.OpenGLWin32.HWnd = Window;
// activate rendering context
if (!changeRenderContext(ExposedData, device))
{
os::Printer::log("Cannot activate GL rendering context", ELL_ERROR);
wglDeleteContext(hrc);
return false;
}
int pf = GetPixelFormat(HDc);
DescribePixelFormat(HDc, pf, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
if (pfd.cAlphaBits != 0)
{
if (pfd.cRedBits == 8)
ColorFormat = ECF_A8R8G8B8;
else
ColorFormat = ECF_A1R5G5B5;
}
else
{
if (pfd.cRedBits == 8)
ColorFormat = ECF_R8G8B8;
else
ColorFormat = ECF_R5G6B5;
}
genericDriverInit();
extGlSwapInterval(Params.Vsync ? 1 : 0);
return true;
}
#endif // _IRR_COMPILE_WITH_WINDOWS_DEVICE_
// -----------------------------------------------------------------------
// MacOSX CONSTRUCTOR
// -----------------------------------------------------------------------
#ifdef _IRR_COMPILE_WITH_OSX_DEVICE_
//! Windows constructor and init code
COpenGLDriver::COpenGLDriver(const SIrrlichtCreationParameters& params,
io::IFileSystem* io, CIrrDeviceMacOSX *device)
: CNullDriver(io, params.WindowSize), COpenGLExtensionHandler(),
CurrentRenderMode(ERM_NONE), ResetRenderStates(true), Transformation3DChanged(true),
AntiAlias(params.AntiAlias), RenderTargetTexture(0),
CurrentRendertargetSize(0,0), ColorFormat(ECF_R8G8B8),
CurrentTarget(ERT_FRAME_BUFFER), Params(params),
OSXDevice(device), DeviceType(EIDT_OSX)
{
#ifdef _DEBUG
setDebugName("COpenGLDriver");
#endif
genericDriverInit();
}
#endif
// -----------------------------------------------------------------------
// LINUX CONSTRUCTOR
// -----------------------------------------------------------------------
#ifdef _IRR_COMPILE_WITH_X11_DEVICE_
//! Linux constructor and init code
COpenGLDriver::COpenGLDriver(const SIrrlichtCreationParameters& params,
io::IFileSystem* io, CIrrDeviceLinux* device)
: CNullDriver(io, params.WindowSize), COpenGLExtensionHandler(),
CurrentRenderMode(ERM_NONE), ResetRenderStates(true),
Transformation3DChanged(true), AntiAlias(params.AntiAlias),
RenderTargetTexture(0), CurrentRendertargetSize(0,0), ColorFormat(ECF_R8G8B8),
CurrentTarget(ERT_FRAME_BUFFER), Params(params),
X11Device(device), DeviceType(EIDT_X11)
{
#ifdef _DEBUG
setDebugName("COpenGLDriver");
#endif
}
bool COpenGLDriver::changeRenderContext(const SExposedVideoData& videoData, CIrrDeviceLinux* device)
{
if (videoData.OpenGLLinux.X11Window)
{
if (videoData.OpenGLLinux.X11Display && videoData.OpenGLLinux.X11Context)
{
if (!glXMakeCurrent((Display*)videoData.OpenGLLinux.X11Display, videoData.OpenGLLinux.X11Window, (GLXContext)videoData.OpenGLLinux.X11Context))
{
os::Printer::log("Render Context switch failed.");
return false;
}
else
{
Drawable = videoData.OpenGLLinux.X11Window;
X11Display = (Display*)videoData.OpenGLLinux.X11Display;
}
}
else
{
// in case we only got a window ID, try with the existing values for display and context
if (!glXMakeCurrent((Display*)ExposedData.OpenGLLinux.X11Display, videoData.OpenGLLinux.X11Window, (GLXContext)ExposedData.OpenGLLinux.X11Context))
{
os::Printer::log("Render Context switch failed.");
return false;
}
else
{
Drawable = videoData.OpenGLLinux.X11Window;
X11Display = (Display*)ExposedData.OpenGLLinux.X11Display;
}
}
}
// set back to main context
else if (X11Display != ExposedData.OpenGLLinux.X11Display)
{
if (!glXMakeCurrent((Display*)ExposedData.OpenGLLinux.X11Display, ExposedData.OpenGLLinux.X11Window, (GLXContext)ExposedData.OpenGLLinux.X11Context))
{
os::Printer::log("Render Context switch failed.");
return false;
}
else
{
Drawable = ExposedData.OpenGLLinux.X11Window;
X11Display = (Display*)ExposedData.OpenGLLinux.X11Display;
}
}
return true;
}
//! inits the open gl driver
bool COpenGLDriver::initDriver(CIrrDeviceLinux* device)
{
ExposedData.OpenGLLinux.X11Context = glXGetCurrentContext();
ExposedData.OpenGLLinux.X11Display = glXGetCurrentDisplay();
ExposedData.OpenGLLinux.X11Window = (unsigned long)Params.WindowId;
Drawable = glXGetCurrentDrawable();
X11Display = (Display*)ExposedData.OpenGLLinux.X11Display;
genericDriverInit();
// set vsync
extGlSwapInterval(Params.Vsync ? 1 : 0);
return true;
}
#endif // _IRR_COMPILE_WITH_X11_DEVICE_
// -----------------------------------------------------------------------
// Wayland CONSTRUCTOR
// -----------------------------------------------------------------------
#ifdef _IRR_COMPILE_WITH_WAYLAND_DEVICE_
//! Linux constructor and init code
COpenGLDriver::COpenGLDriver(const SIrrlichtCreationParameters& params,
io::IFileSystem* io, CIrrDeviceWayland* device)
: CNullDriver(io, params.WindowSize), COpenGLExtensionHandler(),
CurrentRenderMode(ERM_NONE), ResetRenderStates(true),
Transformation3DChanged(true), AntiAlias(params.AntiAlias),
RenderTargetTexture(0), CurrentRendertargetSize(0, 0), ColorFormat(ECF_R8G8B8),
CurrentTarget(ERT_FRAME_BUFFER), Params(params),
wl_device(device), DeviceType(EIDT_WAYLAND)
{
#ifdef _DEBUG
setDebugName("COpenGLDriver");
#endif
}
bool COpenGLDriver::changeRenderContext(const SExposedVideoData& videoData,
CIrrDeviceWayland* device)
{
if (!device->getEGLContext()->makeCurrent())
{
os::Printer::log("Render Context switch failed.");
return false;
}
return true;
}
//! inits the open gl driver
bool COpenGLDriver::initDriver(CIrrDeviceWayland* device)
{
genericDriverInit();
return true;
}
#endif // _IRR_COMPILE_WITH_WAYLAND_DEVICE
// -----------------------------------------------------------------------
// SDL CONSTRUCTOR
// -----------------------------------------------------------------------
#ifdef _IRR_COMPILE_WITH_SDL_DEVICE_
//! SDL constructor and init code
COpenGLDriver::COpenGLDriver(const SIrrlichtCreationParameters& params,
io::IFileSystem* io, CIrrDeviceSDL* device)
: CNullDriver(io, params.WindowSize), COpenGLExtensionHandler(),
CurrentRenderMode(ERM_NONE), ResetRenderStates(true),
Transformation3DChanged(true), AntiAlias(params.AntiAlias),
RenderTargetTexture(0), CurrentRendertargetSize(0,0), ColorFormat(ECF_R8G8B8),
CurrentTarget(ERT_FRAME_BUFFER), Params(params),
SDLDevice(device), DeviceType(EIDT_SDL)
{
#ifdef _DEBUG
setDebugName("COpenGLDriver");
#endif
genericDriverInit();
}
#endif // _IRR_COMPILE_WITH_SDL_DEVICE_
//! destructor
COpenGLDriver::~COpenGLDriver()
{
RequestedLights.clear();
deleteMaterialRenders();
CurrentTexture.clear();
// I get a blue screen on my laptop, when I do not delete the
// textures manually before releasing the dc. Oh how I love this.
deleteAllTextures();
removeAllOcclusionQueries();
removeAllHardwareBuffers();
#ifdef _IRR_COMPILE_WITH_WINDOWS_DEVICE_
if (DeviceType == EIDT_WIN32)
{
if (ExposedData.OpenGLWin32.HRc)
{
if (!wglMakeCurrent(HDc, 0))
os::Printer::log("Release of dc and rc failed.", ELL_WARNING);
if (!wglDeleteContext((HGLRC)ExposedData.OpenGLWin32.HRc))
os::Printer::log("Release of rendering context failed.", ELL_WARNING);
}
if (HDc)
ReleaseDC(Window, HDc);
}
#endif
}
// -----------------------------------------------------------------------
// METHODS
// -----------------------------------------------------------------------
bool COpenGLDriver::genericDriverInit()
{
Name=L"OpenGL ";
Name.append(glGetString(GL_VERSION));
s32 pos=Name.findNext(L' ', 7);
if (pos != -1)
Name=Name.subString(0, pos);
printVersion();
// print renderer information
const GLubyte* renderer = glGetString(GL_RENDERER);
const GLubyte* vendor = glGetString(GL_VENDOR);
if (renderer && vendor)
{
os::Printer::log(reinterpret_cast<const c8*>(renderer), reinterpret_cast<const c8*>(vendor), ELL_INFORMATION);
VendorName = reinterpret_cast<const c8*>(vendor);
}
u32 i;
CurrentTexture.clear();
// load extensions
initExtensions(Params.Stencilbuffer);
if (queryFeature(EVDF_ARB_GLSL))
{
char buf[32];
const u32 maj = ShaderLanguageVersion/100;
snprintf(buf, 32, "%u.%u", maj, ShaderLanguageVersion-maj*100);
os::Printer::log("GLSL version", buf, ELL_INFORMATION);
}
else
os::Printer::log("GLSL not available.", ELL_INFORMATION);
DriverAttributes->setAttribute("MaxTextures", MaxTextureUnits);
DriverAttributes->setAttribute("MaxSupportedTextures", MaxSupportedTextures);
DriverAttributes->setAttribute("MaxLights", MaxLights);
DriverAttributes->setAttribute("MaxAnisotropy", MaxAnisotropy);
DriverAttributes->setAttribute("MaxUserClipPlanes", MaxUserClipPlanes);
DriverAttributes->setAttribute("MaxAuxBuffers", MaxAuxBuffers);
DriverAttributes->setAttribute("MaxMultipleRenderTargets", MaxMultipleRenderTargets);
DriverAttributes->setAttribute("MaxIndices", (s32)MaxIndices);
DriverAttributes->setAttribute("MaxTextureSize", (s32)MaxTextureSize);
DriverAttributes->setAttribute("MaxGeometryVerticesOut", (s32)MaxGeometryVerticesOut);
DriverAttributes->setAttribute("MaxTextureLODBias", MaxTextureLODBias);
DriverAttributes->setAttribute("Version", Version);
DriverAttributes->setAttribute("ShaderLanguageVersion", ShaderLanguageVersion);
DriverAttributes->setAttribute("AntiAlias", AntiAlias);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
// Reset The Current Viewport
glViewport(0, 0, Params.WindowSize.Width, Params.WindowSize.Height);
UserClipPlanes.reallocate(MaxUserClipPlanes);
for (i=0; i<MaxUserClipPlanes; ++i)
UserClipPlanes.push_back(SUserClipPlane());
for (i=0; i<ETS_COUNT; ++i)
setTransform(static_cast<E_TRANSFORMATION_STATE>(i), core::IdentityMatrix);
setAmbientLight(SColorf(0.0f,0.0f,0.0f,0.0f));
#ifdef GL_EXT_separate_specular_color
if (FeatureAvailable[IRR_EXT_separate_specular_color] && !useCoreContext)
glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
#endif
if (!useCoreContext)
glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
Params.HandleSRGB &= ((FeatureAvailable[IRR_ARB_framebuffer_sRGB] || FeatureAvailable[IRR_EXT_framebuffer_sRGB]) &&
FeatureAvailable[IRR_EXT_texture_sRGB]);
glDisable(GL_FRAMEBUFFER_SRGB);
//#if defined(GL_ARB_framebuffer_sRGB)
// if (Params.HandleSRGB)
// glEnable(GL_FRAMEBUFFER_SRGB);
//#elif defined(GL_EXT_framebuffer_sRGB)
// if (Params.HandleSRGB)
// glEnable(GL_FRAMEBUFFER_SRGB_EXT);
//#endif
// This is a fast replacement for NORMALIZE_NORMALS
// if ((Version>101) || FeatureAvailable[IRR_EXT_rescale_normal])
// glEnable(GL_RESCALE_NORMAL_EXT);
glClearDepth(1.0);
if (!useCoreContext)
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glHint(GL_POINT_SMOOTH_HINT, GL_FASTEST);
glDepthFunc(GL_LEQUAL);
glFrontFace(GL_CW);
// adjust flat coloring scheme to DirectX version
#if defined(GL_ARB_provoking_vertex) || defined(GL_EXT_provoking_vertex)
extGlProvokingVertex(GL_FIRST_VERTEX_CONVENTION_EXT);
#endif
// create material renderers
createMaterialRenderers();
// set the renderstates
setRenderStates3DMode();
if (!useCoreContext)
glAlphaFunc(GL_GREATER, 0.f);
// set fog mode
setFog(FogColor, FogType, FogStart, FogEnd, FogDensity, PixelFog, RangeFog);
// create matrix for flipping textures
TextureFlipMatrix.buildTextureTransform(0.0f, core::vector2df(0,0), core::vector2df(0,1.0f), core::vector2df(1.0f,-1.0f));
// We need to reset once more at the beginning of the first rendering.
// This fixes problems with intermediate changes to the material during texture load.
ResetRenderStates = true;
return true;
}
void COpenGLDriver::createMaterialRenderers()
{
// create OpenGL material renderers
addAndDropMaterialRenderer(new COpenGLMaterialRenderer_SOLID(this));
addAndDropMaterialRenderer(new COpenGLMaterialRenderer_SOLID_2_LAYER(this));
// add the same renderer for all lightmap types
COpenGLMaterialRenderer_LIGHTMAP* lmr = new COpenGLMaterialRenderer_LIGHTMAP(this);
addMaterialRenderer(lmr); // for EMT_LIGHTMAP:
addMaterialRenderer(lmr); // for EMT_LIGHTMAP_ADD:
addMaterialRenderer(lmr); // for EMT_LIGHTMAP_M2:
addMaterialRenderer(lmr); // for EMT_LIGHTMAP_M4:
addMaterialRenderer(lmr); // for EMT_LIGHTMAP_LIGHTING:
addMaterialRenderer(lmr); // for EMT_LIGHTMAP_LIGHTING_M2:
addMaterialRenderer(lmr); // for EMT_LIGHTMAP_LIGHTING_M4:
lmr->drop();
// add remaining material renderer
addAndDropMaterialRenderer(new COpenGLMaterialRenderer_DETAIL_MAP(this));
addAndDropMaterialRenderer(new COpenGLMaterialRenderer_SPHERE_MAP(this));
addAndDropMaterialRenderer(new COpenGLMaterialRenderer_REFLECTION_2_LAYER(this));
addAndDropMaterialRenderer(new COpenGLMaterialRenderer_TRANSPARENT_ADD_COLOR(this));
addAndDropMaterialRenderer(new COpenGLMaterialRenderer_TRANSPARENT_ALPHA_CHANNEL(this));
addAndDropMaterialRenderer(new COpenGLMaterialRenderer_TRANSPARENT_ALPHA_CHANNEL_REF(this));
addAndDropMaterialRenderer(new COpenGLMaterialRenderer_TRANSPARENT_VERTEX_ALPHA(this));
addAndDropMaterialRenderer(new COpenGLMaterialRenderer_TRANSPARENT_REFLECTION_2_LAYER(this));
// add normal map renderers
s32 tmp = 0;
video::IMaterialRenderer* renderer = 0;
if (!useCoreContext)
{
renderer = new COpenGLNormalMapRenderer(this, tmp, MaterialRenderers[EMT_SOLID].Renderer);
renderer->drop();
renderer = new COpenGLNormalMapRenderer(this, tmp, MaterialRenderers[EMT_TRANSPARENT_ADD_COLOR].Renderer);
renderer->drop();
renderer = new COpenGLNormalMapRenderer(this, tmp, MaterialRenderers[EMT_TRANSPARENT_VERTEX_ALPHA].Renderer);
renderer->drop();
}
// add parallax map renderers
renderer = new COpenGLParallaxMapRenderer(this, tmp, MaterialRenderers[EMT_SOLID].Renderer);
renderer->drop();
renderer = new COpenGLParallaxMapRenderer(this, tmp, MaterialRenderers[EMT_TRANSPARENT_ADD_COLOR].Renderer);
renderer->drop();
renderer = new COpenGLParallaxMapRenderer(this, tmp, MaterialRenderers[EMT_TRANSPARENT_VERTEX_ALPHA].Renderer);
renderer->drop();
// add basic 1 texture blending
addAndDropMaterialRenderer(new COpenGLMaterialRenderer_ONETEXTURE_BLEND(this));
}
//! presents the rendered scene on the screen, returns false if failed
bool COpenGLDriver::endScene()
{
CNullDriver::endScene();
glFlush();
#ifdef _IRR_COMPILE_WITH_WINDOWS_DEVICE_
if (DeviceType == EIDT_WIN32)
return SwapBuffers(HDc) == TRUE;
#endif
#ifdef _IRR_COMPILE_WITH_X11_DEVICE_
if (DeviceType == EIDT_X11)
{
glXSwapBuffers(X11Display, Drawable);
return true;
}
#endif
#ifdef _IRR_COMPILE_WITH_WAYLAND_DEVICE_
if (DeviceType == EIDT_WAYLAND)
{
wl_device->swapBuffers();
return true;
}
#endif
#ifdef _IRR_COMPILE_WITH_OSX_DEVICE_
if (DeviceType == EIDT_OSX)
{
OSXDevice->flush();
return true;
}
#endif
#ifdef _IRR_COMPILE_WITH_SDL_DEVICE_
if (DeviceType == EIDT_SDL)
{
SDL_GL_SwapBuffers();
return true;
}
#endif
// todo: console device present
return false;
}
//! clears the zbuffer and color buffer
void COpenGLDriver::clearBuffers(bool backBuffer, bool zBuffer, bool stencilBuffer, SColor color)
{
GLbitfield mask = 0;
if (backBuffer)
{
const f32 inv = 1.0f / 255.0f;
glClearColor(color.getRed() * inv, color.getGreen() * inv,
color.getBlue() * inv, color.getAlpha() * inv);
mask |= GL_COLOR_BUFFER_BIT;
}
if (zBuffer)
{
glDepthMask(GL_TRUE);
LastMaterial.ZWriteEnable=true;
mask |= GL_DEPTH_BUFFER_BIT;
}
if (stencilBuffer)
mask |= GL_STENCIL_BUFFER_BIT;
if (mask)
glClear(mask);
}
//! init call for rendering start
bool COpenGLDriver::beginScene(bool backBuffer, bool zBuffer, SColor color,
const SExposedVideoData& videoData, core::rect<s32>* sourceRect)
{
CNullDriver::beginScene(backBuffer, zBuffer, color, videoData, sourceRect);
switch (DeviceType)
{
#ifdef _IRR_COMPILE_WITH_WINDOWS_DEVICE_
case EIDT_WIN32:
changeRenderContext(videoData, Win32Device);
break;
#endif
#ifdef _IRR_COMPILE_WITH_X11_DEVICE_
case EIDT_X11:
changeRenderContext(videoData, X11Device);
break;
#endif
#ifdef _IRR_COMPILE_WITH_WAYLAND_DEVICE_
case EIDT_WAYLAND:
changeRenderContext(videoData, wl_device);
break;
#endif
default:
changeRenderContext(videoData, (void*)0);
break;
}
#if defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
if (DeviceType == EIDT_SDL)
{
// todo: SDL sets glFrontFace(GL_CCW) after driver creation,
// it would be better if this was fixed elsewhere.
glFrontFace(GL_CW);
}
#endif
clearBuffers(backBuffer, zBuffer, false, color);
return true;
}
//! Returns the transformation set by setTransform
const core::matrix4& COpenGLDriver::getTransform(E_TRANSFORMATION_STATE state) const
{
return Matrices[state];
}
//! sets transformation
void COpenGLDriver::setTransform(E_TRANSFORMATION_STATE state, const core::matrix4& mat)
{
Matrices[state] = mat;
Transformation3DChanged = true;
switch (state)
{
case ETS_VIEW:
case ETS_WORLD:
{
// OpenGL only has a model matrix, view and world is not existent. so lets fake these two.
if (!useCoreContext)
glMatrixMode(GL_MODELVIEW);
// first load the viewing transformation for user clip planes
if (!useCoreContext)
glLoadMatrixf((Matrices[ETS_VIEW]).pointer());
// we have to update the clip planes to the latest view matrix
for (u32 i=0; i<MaxUserClipPlanes; ++i)
{
if (UserClipPlanes[i].Enabled)
uploadClipPlane(i);
}
// now the real model-view matrix
if (!useCoreContext)
glMultMatrixf(Matrices[ETS_WORLD].pointer());
}
break;
case ETS_PROJECTION:
{
if (!useCoreContext)
glMatrixMode(GL_PROJECTION);
if (!useCoreContext)
glLoadMatrixf(mat.pointer());
}
break;
case ETS_COUNT:
return;
default:
{
const u32 i = state - ETS_TEXTURE_0;
if (i >= MATERIAL_MAX_TEXTURES)
break;
const bool isRTT = Material.getTexture(i) && Material.getTexture(i)->isRenderTarget();
if (MultiTextureExtension)
extGlActiveTexture(GL_TEXTURE0_ARB + i);
if (!useCoreContext)
glMatrixMode(GL_TEXTURE);
if (!isRTT && mat.isIdentity() && !useCoreContext)
glLoadIdentity();
else
{
GLfloat glmat[16];
if (isRTT && CurrentTarget == ERT_FRAME_BUFFER)
getGLTextureMatrix(glmat, mat * TextureFlipMatrix);
else
getGLTextureMatrix(glmat, mat);
if (!useCoreContext)
glLoadMatrixf(glmat);
}
break;
}
}
}
bool COpenGLDriver::updateVertexHardwareBuffer(SHWBufferLink_opengl *HWBuffer)
{
if (!HWBuffer)
return false;
if (!FeatureAvailable[IRR_ARB_vertex_buffer_object])
return false;
#if defined(GL_ARB_vertex_buffer_object)
const scene::IMeshBuffer* mb = HWBuffer->MeshBuffer;
const void* vertices=mb->getVertices();
const u32 vertexCount=mb->getVertexCount();
const E_VERTEX_TYPE vType=mb->getVertexType();
const u32 vertexSize = getVertexPitchFromType(vType);
const c8* vbuf = static_cast<const c8*>(vertices);
core::array<c8> buffer;
if (!FeatureAvailable[IRR_ARB_vertex_array_bgra] && !FeatureAvailable[IRR_EXT_vertex_array_bgra])
{
//buffer vertex data, and convert colors...
buffer.set_used(vertexSize * vertexCount);
memcpy(buffer.pointer(), vertices, vertexSize * vertexCount);
vbuf = buffer.const_pointer();
// in order to convert the colors into opengl format (RGBA)
switch (vType)
{
case EVT_STANDARD:
{
S3DVertex* pb = reinterpret_cast<S3DVertex*>(buffer.pointer());
const S3DVertex* po = static_cast<const S3DVertex*>(vertices);
for (u32 i=0; i<vertexCount; i++)
{
po[i].Color.toOpenGLColor((u8*)&(pb[i].Color));
}
}
break;
case EVT_2TCOORDS:
{
S3DVertex2TCoords* pb = reinterpret_cast<S3DVertex2TCoords*>(buffer.pointer());
const S3DVertex2TCoords* po = static_cast<const S3DVertex2TCoords*>(vertices);
for (u32 i=0; i<vertexCount; i++)
{
po[i].Color.toOpenGLColor((u8*)&(pb[i].Color));
}
}
break;
case EVT_TANGENTS:
{
S3DVertexTangents* pb = reinterpret_cast<S3DVertexTangents*>(buffer.pointer());
const S3DVertexTangents* po = static_cast<const S3DVertexTangents*>(vertices);
for (u32 i=0; i<vertexCount; i++)
{
po[i].Color.toOpenGLColor((u8*)&(pb[i].Color));
}
}
break;
default:
{
return false;
}
}
}
//get or create buffer
bool newBuffer=false;
if (!HWBuffer->vbo_verticesID)
{
extGlGenBuffers(1, &HWBuffer->vbo_verticesID);
if (!HWBuffer->vbo_verticesID)
return false;
newBuffer=true;
}
else if (HWBuffer->vbo_verticesSize < vertexCount*vertexSize)
{
newBuffer=true;
}
extGlBindBuffer(GL_ARRAY_BUFFER, HWBuffer->vbo_verticesID);
//copy data to graphics card
glGetError(); // clear error storage
if (!newBuffer)
extGlBufferSubData(GL_ARRAY_BUFFER, 0, vertexCount * vertexSize, vbuf);
else
{
HWBuffer->vbo_verticesSize = vertexCount*vertexSize;
if (HWBuffer->Mapped_Vertex==scene::EHM_STATIC)
extGlBufferData(GL_ARRAY_BUFFER, vertexCount * vertexSize, vbuf, GL_STATIC_DRAW);
else if (HWBuffer->Mapped_Vertex==scene::EHM_DYNAMIC)
extGlBufferData(GL_ARRAY_BUFFER, vertexCount * vertexSize, vbuf, GL_DYNAMIC_DRAW);
else //scene::EHM_STREAM
extGlBufferData(GL_ARRAY_BUFFER, vertexCount * vertexSize, vbuf, GL_STREAM_DRAW);
}
extGlBindBuffer(GL_ARRAY_BUFFER, 0);
return (glGetError() == GL_NO_ERROR);
#else
return false;
#endif
}
bool COpenGLDriver::updateIndexHardwareBuffer(SHWBufferLink_opengl *HWBuffer)
{
if (!HWBuffer)
return false;
if (!FeatureAvailable[IRR_ARB_vertex_buffer_object])
return false;
#if defined(GL_ARB_vertex_buffer_object)
const scene::IMeshBuffer* mb = HWBuffer->MeshBuffer;
const void* indices=mb->getIndices();
u32 indexCount= mb->getIndexCount();
GLenum indexSize;
switch (mb->getIndexType())
{
case EIT_16BIT:
{
indexSize=sizeof(u16);
break;
}
case EIT_32BIT:
{
indexSize=sizeof(u32);
break;
}
default:
{
return false;
}
}
//get or create buffer
bool newBuffer=false;
if (!HWBuffer->vbo_indicesID)
{
extGlGenBuffers(1, &HWBuffer->vbo_indicesID);
if (!HWBuffer->vbo_indicesID)
return false;
newBuffer=true;
}
else if (HWBuffer->vbo_indicesSize < indexCount*indexSize)
{
newBuffer=true;
}
extGlBindBuffer(GL_ELEMENT_ARRAY_BUFFER, HWBuffer->vbo_indicesID);
//copy data to graphics card
glGetError(); // clear error storage
if (!newBuffer)
extGlBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, indexCount * indexSize, indices);
else
{
HWBuffer->vbo_indicesSize = indexCount*indexSize;
if (HWBuffer->Mapped_Index==scene::EHM_STATIC)
extGlBufferData(GL_ELEMENT_ARRAY_BUFFER, indexCount * indexSize, indices, GL_STATIC_DRAW);
else if (HWBuffer->Mapped_Index==scene::EHM_DYNAMIC)
extGlBufferData(GL_ELEMENT_ARRAY_BUFFER, indexCount * indexSize, indices, GL_DYNAMIC_DRAW);
else //scene::EHM_STREAM
extGlBufferData(GL_ELEMENT_ARRAY_BUFFER, indexCount * indexSize, indices, GL_STREAM_DRAW);
}
extGlBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
return (glGetError() == GL_NO_ERROR);
#else
return false;
#endif
}
//! updates hardware buffer if needed
bool COpenGLDriver::updateHardwareBuffer(SHWBufferLink *HWBuffer)
{
if (!HWBuffer)
return false;
if (HWBuffer->Mapped_Vertex!=scene::EHM_NEVER)
{
if (HWBuffer->ChangedID_Vertex != HWBuffer->MeshBuffer->getChangedID_Vertex()
|| !((SHWBufferLink_opengl*)HWBuffer)->vbo_verticesID)
{
HWBuffer->ChangedID_Vertex = HWBuffer->MeshBuffer->getChangedID_Vertex();
if (!updateVertexHardwareBuffer((SHWBufferLink_opengl*)HWBuffer))
return false;
}
}
if (HWBuffer->Mapped_Index!=scene::EHM_NEVER)
{
if (HWBuffer->ChangedID_Index != HWBuffer->MeshBuffer->getChangedID_Index()
|| !((SHWBufferLink_opengl*)HWBuffer)->vbo_indicesID)
{
HWBuffer->ChangedID_Index = HWBuffer->MeshBuffer->getChangedID_Index();
if (!updateIndexHardwareBuffer((SHWBufferLink_opengl*)HWBuffer))
return false;
}
}
return true;
}
//! Create hardware buffer from meshbuffer
COpenGLDriver::SHWBufferLink *COpenGLDriver::createHardwareBuffer(const scene::IMeshBuffer* mb)
{
#if defined(GL_ARB_vertex_buffer_object)
if (!mb || (mb->getHardwareMappingHint_Index()==scene::EHM_NEVER && mb->getHardwareMappingHint_Vertex()==scene::EHM_NEVER))
return 0;
SHWBufferLink_opengl *HWBuffer=new SHWBufferLink_opengl(mb);
//add to map
HWBufferMap.insert(HWBuffer->MeshBuffer, HWBuffer);
HWBuffer->ChangedID_Vertex=HWBuffer->MeshBuffer->getChangedID_Vertex();
HWBuffer->ChangedID_Index=HWBuffer->MeshBuffer->getChangedID_Index();
HWBuffer->Mapped_Vertex=mb->getHardwareMappingHint_Vertex();
HWBuffer->Mapped_Index=mb->getHardwareMappingHint_Index();
HWBuffer->LastUsed=0;
HWBuffer->vbo_verticesID=0;
HWBuffer->vbo_indicesID=0;
HWBuffer->vbo_verticesSize=0;
HWBuffer->vbo_indicesSize=0;
if (!updateHardwareBuffer(HWBuffer))
{
deleteHardwareBuffer(HWBuffer);
return 0;
}
return HWBuffer;
#else
return 0;
#endif
}
void COpenGLDriver::deleteHardwareBuffer(SHWBufferLink *_HWBuffer)
{
if (!_HWBuffer)
return;
#if defined(GL_ARB_vertex_buffer_object)
SHWBufferLink_opengl *HWBuffer=(SHWBufferLink_opengl*)_HWBuffer;
if (HWBuffer->vbo_verticesID)
{
extGlDeleteBuffers(1, &HWBuffer->vbo_verticesID);
HWBuffer->vbo_verticesID=0;
}
if (HWBuffer->vbo_indicesID)
{
extGlDeleteBuffers(1, &HWBuffer->vbo_indicesID);
HWBuffer->vbo_indicesID=0;
}
#endif
CNullDriver::deleteHardwareBuffer(_HWBuffer);
}
//! Draw hardware buffer
void COpenGLDriver::drawHardwareBuffer(SHWBufferLink *_HWBuffer)
{
if (!_HWBuffer)
return;
updateHardwareBuffer(_HWBuffer); //check if update is needed
_HWBuffer->LastUsed=0; //reset count
#if defined(GL_ARB_vertex_buffer_object)
SHWBufferLink_opengl *HWBuffer=(SHWBufferLink_opengl*)_HWBuffer;
const scene::IMeshBuffer* mb = HWBuffer->MeshBuffer;
const void *vertices=mb->getVertices();
const void *indexList=mb->getIndices();
if (HWBuffer->Mapped_Vertex!=scene::EHM_NEVER)
{
extGlBindBuffer(GL_ARRAY_BUFFER, HWBuffer->vbo_verticesID);
vertices=0;
}
if (HWBuffer->Mapped_Index!=scene::EHM_NEVER)
{
extGlBindBuffer(GL_ELEMENT_ARRAY_BUFFER, HWBuffer->vbo_indicesID);
indexList=0;
}
drawVertexPrimitiveList(vertices, mb->getVertexCount(), indexList, indiceToPrimitiveCount(mb->getPrimitiveType(), mb->getIndexCount()), mb->getVertexType(), mb->getPrimitiveType(), mb->getIndexType());
if (HWBuffer->Mapped_Vertex!=scene::EHM_NEVER)
extGlBindBuffer(GL_ARRAY_BUFFER, 0);
if (HWBuffer->Mapped_Index!=scene::EHM_NEVER)
extGlBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
#endif
}
//! Create occlusion query.
/** Use node for identification and mesh for occlusion test. */
void COpenGLDriver::addOcclusionQuery(scene::ISceneNode* node,
const scene::IMesh* mesh)
{
if (!queryFeature(EVDF_OCCLUSION_QUERY))
return;
CNullDriver::addOcclusionQuery(node, mesh);
const s32 index = OcclusionQueries.linear_search(SOccQuery(node));
if ((index != -1) && (OcclusionQueries[index].UID == 0))
extGlGenQueries(1, reinterpret_cast<GLuint*>(&OcclusionQueries[index].UID));
}
//! Remove occlusion query.
void COpenGLDriver::removeOcclusionQuery(scene::ISceneNode* node)
{
const s32 index = OcclusionQueries.linear_search(SOccQuery(node));
if (index != -1)
{
if (OcclusionQueries[index].UID != 0)
extGlDeleteQueries(1, reinterpret_cast<GLuint*>(&OcclusionQueries[index].UID));
CNullDriver::removeOcclusionQuery(node);
}
}
//! Run occlusion query. Draws mesh stored in query.
/** If the mesh shall not be rendered visible, use
overrideMaterial to disable the color and depth buffer. */
void COpenGLDriver::runOcclusionQuery(scene::ISceneNode* node, bool visible)
{
if (!node)
return;
const s32 index = OcclusionQueries.linear_search(SOccQuery(node));
if (index != -1)
{
if (OcclusionQueries[index].UID)
extGlBeginQuery(
#ifdef GL_ARB_occlusion_query
GL_SAMPLES_PASSED_ARB,
#else
0,
#endif
OcclusionQueries[index].UID);
CNullDriver::runOcclusionQuery(node,visible);
if (OcclusionQueries[index].UID)
extGlEndQuery(
#ifdef GL_ARB_occlusion_query
GL_SAMPLES_PASSED_ARB);
#else
0);
#endif
testGLError();
}
}
//! Update occlusion query. Retrieves results from GPU.
/** If the query shall not block, set the flag to false.
Update might not occur in this case, though */
void COpenGLDriver::updateOcclusionQuery(scene::ISceneNode* node, bool block)
{
const s32 index = OcclusionQueries.linear_search(SOccQuery(node));
if (index != -1)
{
// not yet started
if (OcclusionQueries[index].Run==u32(~0))
return;
GLint available = block?GL_TRUE:GL_FALSE;
if (!block)
extGlGetQueryObjectiv(OcclusionQueries[index].UID,
#ifdef GL_ARB_occlusion_query
GL_QUERY_RESULT_AVAILABLE_ARB,
#elif defined(GL_NV_occlusion_query)
GL_PIXEL_COUNT_AVAILABLE_NV,
#else
0,
#endif
&available);
testGLError();
if (available==GL_TRUE)
{
extGlGetQueryObjectiv(OcclusionQueries[index].UID,
#ifdef GL_ARB_occlusion_query
GL_QUERY_RESULT_ARB,
#elif defined(GL_NV_occlusion_query)
GL_PIXEL_COUNT_NV,
#else
0,
#endif
&available);
if (queryFeature(EVDF_OCCLUSION_QUERY))
OcclusionQueries[index].Result = available;
}
testGLError();
}
}
//! Return query result.
/** Return value is the number of visible pixels/fragments.
The value is a safe approximation, i.e. can be larger than the
actual value of pixels. */
u32 COpenGLDriver::getOcclusionQueryResult(scene::ISceneNode* node) const
{
const s32 index = OcclusionQueries.linear_search(SOccQuery(node));
if (index != -1)
return OcclusionQueries[index].Result;
else
return ~0;
}
// small helper function to create vertex buffer object adress offsets
static inline u8* buffer_offset(const long offset)
{
return ((u8*)0 + offset);
}
//! draws a vertex primitive list
void COpenGLDriver::drawVertexPrimitiveList(const void* vertices, u32 vertexCount,
const void* indexList, u32 primitiveCount,
E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType, E_INDEX_TYPE iType)
{
if (!primitiveCount || !vertexCount)
return;
if (!checkPrimitiveCount(primitiveCount))
return;
CNullDriver::drawVertexPrimitiveList(vertices, vertexCount, indexList, primitiveCount, vType, pType, iType);
if (vertices && !FeatureAvailable[IRR_ARB_vertex_array_bgra] && !FeatureAvailable[IRR_EXT_vertex_array_bgra])
getColorBuffer(vertices, vertexCount, vType);
// draw everything
setRenderStates3DMode();
if (MultiTextureExtension)
extGlClientActiveTexture(GL_TEXTURE0_ARB);
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
if ((pType!=scene::EPT_POINTS) && (pType!=scene::EPT_POINT_SPRITES))
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
if ((pType!=scene::EPT_POINTS) && (pType!=scene::EPT_POINT_SPRITES))
glEnableClientState(GL_NORMAL_ARRAY);
//due to missing defines in OSX headers, we have to be more specific with this check
//#if defined(GL_ARB_vertex_array_bgra) || defined(GL_EXT_vertex_array_bgra)
#ifdef GL_BGRA
const GLint colorSize=(FeatureAvailable[IRR_ARB_vertex_array_bgra] || FeatureAvailable[IRR_EXT_vertex_array_bgra])?GL_BGRA:4;
#else
const GLint colorSize=4;
#endif
if (vertices)
{
if (FeatureAvailable[IRR_ARB_vertex_array_bgra] || FeatureAvailable[IRR_EXT_vertex_array_bgra])
{
switch (vType)
{
case EVT_STANDARD:
glColorPointer(colorSize, GL_UNSIGNED_BYTE, sizeof(S3DVertex), &(static_cast<const S3DVertex*>(vertices))[0].Color);
break;
case EVT_2TCOORDS:
glColorPointer(colorSize, GL_UNSIGNED_BYTE, sizeof(S3DVertex2TCoords), &(static_cast<const S3DVertex2TCoords*>(vertices))[0].Color);
break;
case EVT_TANGENTS:
glColorPointer(colorSize, GL_UNSIGNED_BYTE, sizeof(S3DVertexTangents), &(static_cast<const S3DVertexTangents*>(vertices))[0].Color);
break;
default:
break;
}
}
else
{
// avoid passing broken pointer to OpenGL
_IRR_DEBUG_BREAK_IF(ColorBuffer.size()==0);
glColorPointer(colorSize, GL_UNSIGNED_BYTE, 0, &ColorBuffer[0]);
}
}
switch (vType)
{
case EVT_STANDARD:
if (vertices)
{
glNormalPointer(GL_FLOAT, sizeof(S3DVertex), &(static_cast<const S3DVertex*>(vertices))[0].Normal);
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex), &(static_cast<const S3DVertex*>(vertices))[0].TCoords);
glVertexPointer(3, GL_FLOAT, sizeof(S3DVertex), &(static_cast<const S3DVertex*>(vertices))[0].Pos);
}
else
{
glNormalPointer(GL_FLOAT, sizeof(S3DVertex), buffer_offset(12));
glColorPointer(colorSize, GL_UNSIGNED_BYTE, sizeof(S3DVertex), buffer_offset(24));
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex), buffer_offset(28));
glVertexPointer(3, GL_FLOAT, sizeof(S3DVertex), 0);
}
if (MultiTextureExtension && CurrentTexture[1])
{
extGlClientActiveTexture(GL_TEXTURE1_ARB);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
if (vertices)
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex), &(static_cast<const S3DVertex*>(vertices))[0].TCoords);
else
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex), buffer_offset(28));
}
break;
case EVT_2TCOORDS:
if (vertices)
{
glNormalPointer(GL_FLOAT, sizeof(S3DVertex2TCoords), &(static_cast<const S3DVertex2TCoords*>(vertices))[0].Normal);
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex2TCoords), &(static_cast<const S3DVertex2TCoords*>(vertices))[0].TCoords);
glVertexPointer(3, GL_FLOAT, sizeof(S3DVertex2TCoords), &(static_cast<const S3DVertex2TCoords*>(vertices))[0].Pos);
}
else
{
glNormalPointer(GL_FLOAT, sizeof(S3DVertex2TCoords), buffer_offset(12));
glColorPointer(colorSize, GL_UNSIGNED_BYTE, sizeof(S3DVertex2TCoords), buffer_offset(24));
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex2TCoords), buffer_offset(28));
glVertexPointer(3, GL_FLOAT, sizeof(S3DVertex2TCoords), buffer_offset(0));
}
if (MultiTextureExtension)
{
extGlClientActiveTexture(GL_TEXTURE1_ARB);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
if (vertices)
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex2TCoords), &(static_cast<const S3DVertex2TCoords*>(vertices))[0].TCoords2);
else
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex2TCoords), buffer_offset(36));
}
break;
case EVT_TANGENTS:
if (vertices)
{
glNormalPointer(GL_FLOAT, sizeof(S3DVertexTangents), &(static_cast<const S3DVertexTangents*>(vertices))[0].Normal);
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertexTangents), &(static_cast<const S3DVertexTangents*>(vertices))[0].TCoords);
glVertexPointer(3, GL_FLOAT, sizeof(S3DVertexTangents), &(static_cast<const S3DVertexTangents*>(vertices))[0].Pos);
}
else
{
glNormalPointer(GL_FLOAT, sizeof(S3DVertexTangents), buffer_offset(12));
glColorPointer(colorSize, GL_UNSIGNED_BYTE, sizeof(S3DVertexTangents), buffer_offset(24));
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertexTangents), buffer_offset(28));
glVertexPointer(3, GL_FLOAT, sizeof(S3DVertexTangents), buffer_offset(0));
}
if (MultiTextureExtension)
{
extGlClientActiveTexture(GL_TEXTURE1_ARB);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
if (vertices)
glTexCoordPointer(3, GL_FLOAT, sizeof(S3DVertexTangents), &(static_cast<const S3DVertexTangents*>(vertices))[0].Tangent);
else
glTexCoordPointer(3, GL_FLOAT, sizeof(S3DVertexTangents), buffer_offset(36));
extGlClientActiveTexture(GL_TEXTURE2_ARB);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
if (vertices)
glTexCoordPointer(3, GL_FLOAT, sizeof(S3DVertexTangents), &(static_cast<const S3DVertexTangents*>(vertices))[0].Binormal);
else
glTexCoordPointer(3, GL_FLOAT, sizeof(S3DVertexTangents), buffer_offset(48));
}
break;
default:
break;
}
renderArray(indexList, primitiveCount, pType, iType);
if (MultiTextureExtension)
{
if (vType==EVT_TANGENTS)
{
extGlClientActiveTexture(GL_TEXTURE2_ARB);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
if ((vType!=EVT_STANDARD) || CurrentTexture[1])
{
extGlClientActiveTexture(GL_TEXTURE1_ARB);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
extGlClientActiveTexture(GL_TEXTURE0_ARB);
}
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
void COpenGLDriver::getColorBuffer(const void* vertices, u32 vertexCount, E_VERTEX_TYPE vType)
{
// convert colors to gl color format.
vertexCount *= 4; //reused as color component count
ColorBuffer.set_used(vertexCount);
u32 i;
switch (vType)
{
case EVT_STANDARD:
{
const S3DVertex* p = static_cast<const S3DVertex*>(vertices);
for (i=0; i<vertexCount; i+=4)
{
p->Color.toOpenGLColor(&ColorBuffer[i]);
++p;
}
}
break;
case EVT_2TCOORDS:
{
const S3DVertex2TCoords* p = static_cast<const S3DVertex2TCoords*>(vertices);
for (i=0; i<vertexCount; i+=4)
{
p->Color.toOpenGLColor(&ColorBuffer[i]);
++p;
}
}
break;
case EVT_TANGENTS:
{
const S3DVertexTangents* p = static_cast<const S3DVertexTangents*>(vertices);
for (i=0; i<vertexCount; i+=4)
{
p->Color.toOpenGLColor(&ColorBuffer[i]);
++p;
}
}
break;
default:
break;
}
}
void COpenGLDriver::renderArray(const void* indexList, u32 primitiveCount,
scene::E_PRIMITIVE_TYPE pType, E_INDEX_TYPE iType)
{
GLenum indexSize=0;
switch (iType)
{
case EIT_16BIT:
{
indexSize=GL_UNSIGNED_SHORT;
break;
}
case EIT_32BIT:
{
indexSize=GL_UNSIGNED_INT;
break;
}
}
switch (pType)
{
case scene::EPT_POINTS:
case scene::EPT_POINT_SPRITES:
{
#ifdef GL_ARB_point_sprite
if (pType==scene::EPT_POINT_SPRITES && FeatureAvailable[IRR_ARB_point_sprite])
glEnable(GL_POINT_SPRITE_ARB);
#endif
// prepare size and attenuation (where supported)
GLfloat particleSize=Material.Thickness;
// if (AntiAlias)
// particleSize=core::clamp(particleSize, DimSmoothedPoint[0], DimSmoothedPoint[1]);
// else
particleSize=core::clamp(particleSize, DimAliasedPoint[0], DimAliasedPoint[1]);
#if defined(GL_VERSION_1_4) || defined(GL_ARB_point_parameters) || defined(GL_EXT_point_parameters) || defined(GL_SGIS_point_parameters)
const float att[] = {1.0f, 1.0f, 0.0f};
#if defined(GL_VERSION_1_4)
extGlPointParameterfv(GL_POINT_DISTANCE_ATTENUATION, att);
// extGlPointParameterf(GL_POINT_SIZE_MIN,1.f);
extGlPointParameterf(GL_POINT_SIZE_MAX, particleSize);
extGlPointParameterf(GL_POINT_FADE_THRESHOLD_SIZE, 1.0f);
#elif defined(GL_ARB_point_parameters)
extGlPointParameterfv(GL_POINT_DISTANCE_ATTENUATION_ARB, att);
// extGlPointParameterf(GL_POINT_SIZE_MIN_ARB,1.f);
extGlPointParameterf(GL_POINT_SIZE_MAX_ARB, particleSize);
extGlPointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_ARB, 1.0f);
#elif defined(GL_EXT_point_parameters)
extGlPointParameterfv(GL_DISTANCE_ATTENUATION_EXT, att);
// extGlPointParameterf(GL_POINT_SIZE_MIN_EXT,1.f);
extGlPointParameterf(GL_POINT_SIZE_MAX_EXT, particleSize);
extGlPointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_EXT, 1.0f);
#elif defined(GL_SGIS_point_parameters)
extGlPointParameterfv(GL_DISTANCE_ATTENUATION_SGIS, att);
// extGlPointParameterf(GL_POINT_SIZE_MIN_SGIS,1.f);
extGlPointParameterf(GL_POINT_SIZE_MAX_SGIS, particleSize);
extGlPointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_SGIS, 1.0f);
#endif
#endif
glPointSize(particleSize);
#ifdef GL_ARB_point_sprite
if (pType==scene::EPT_POINT_SPRITES && FeatureAvailable[IRR_ARB_point_sprite])
glTexEnvf(GL_POINT_SPRITE_ARB,GL_COORD_REPLACE, GL_TRUE);
#endif
glDrawArrays(GL_POINTS, 0, primitiveCount);
#ifdef GL_ARB_point_sprite
if (pType==scene::EPT_POINT_SPRITES && FeatureAvailable[IRR_ARB_point_sprite])
{
glDisable(GL_POINT_SPRITE_ARB);
glTexEnvf(GL_POINT_SPRITE_ARB,GL_COORD_REPLACE, GL_FALSE);
}
#endif
}
break;
case scene::EPT_LINE_STRIP:
glDrawElements(GL_LINE_STRIP, primitiveCount+1, indexSize, indexList);
break;
case scene::EPT_LINE_LOOP:
glDrawElements(GL_LINE_LOOP, primitiveCount, indexSize, indexList);
break;
case scene::EPT_LINES:
glDrawElements(GL_LINES, primitiveCount*2, indexSize, indexList);
break;
case scene::EPT_TRIANGLE_STRIP:
glDrawElements(GL_TRIANGLE_STRIP, primitiveCount+2, indexSize, indexList);
break;
case scene::EPT_TRIANGLE_FAN:
glDrawElements(GL_TRIANGLE_FAN, primitiveCount+2, indexSize, indexList);
break;
case scene::EPT_TRIANGLES:
glDrawElements(GL_TRIANGLES, primitiveCount*3, indexSize, indexList);
break;
case scene::EPT_QUAD_STRIP:
glDrawElements(GL_QUAD_STRIP, primitiveCount*2+2, indexSize, indexList);
break;
case scene::EPT_QUADS:
glDrawElements(GL_QUADS, primitiveCount*4, indexSize, indexList);
break;
case scene::EPT_POLYGON:
glDrawElements(GL_POLYGON, primitiveCount, indexSize, indexList);
break;
}
}
//! draws a vertex primitive list in 2d
void COpenGLDriver::draw2DVertexPrimitiveList(const void* vertices, u32 vertexCount,
const void* indexList, u32 primitiveCount,
E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType, E_INDEX_TYPE iType)
{
if (!primitiveCount || !vertexCount)
return;
if (useCoreContext)
return;
if (!checkPrimitiveCount(primitiveCount))
return;
CNullDriver::draw2DVertexPrimitiveList(vertices, vertexCount, indexList, primitiveCount, vType, pType, iType);
if (vertices && !FeatureAvailable[IRR_ARB_vertex_array_bgra] && !FeatureAvailable[IRR_EXT_vertex_array_bgra])
getColorBuffer(vertices, vertexCount, vType);
// draw everything
this->setActiveTexture(0, Material.getTexture(0));
if (Material.MaterialType==EMT_ONETEXTURE_BLEND)
{
E_BLEND_FACTOR srcFact;
E_BLEND_FACTOR dstFact;
E_MODULATE_FUNC modulo;
u32 alphaSource;
unpack_textureBlendFunc ( srcFact, dstFact, modulo, alphaSource, Material.MaterialTypeParam);
setRenderStates2DMode(alphaSource&video::EAS_VERTEX_COLOR, (Material.getTexture(0) != 0), (alphaSource&video::EAS_TEXTURE) != 0);
}
else
setRenderStates2DMode(Material.MaterialType==EMT_TRANSPARENT_VERTEX_ALPHA, (Material.getTexture(0) != 0), Material.MaterialType==EMT_TRANSPARENT_ALPHA_CHANNEL);
if (MultiTextureExtension)
extGlClientActiveTexture(GL_TEXTURE0_ARB);
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
if ((pType!=scene::EPT_POINTS) && (pType!=scene::EPT_POINT_SPRITES))
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
//due to missing defines in OSX headers, we have to be more specific with this check
//#if defined(GL_ARB_vertex_array_bgra) || defined(GL_EXT_vertex_array_bgra)
#ifdef GL_BGRA
const GLint colorSize=(FeatureAvailable[IRR_ARB_vertex_array_bgra] || FeatureAvailable[IRR_EXT_vertex_array_bgra])?GL_BGRA:4;
#else
const GLint colorSize=4;
#endif
if (vertices)
{
if (FeatureAvailable[IRR_ARB_vertex_array_bgra] || FeatureAvailable[IRR_EXT_vertex_array_bgra])
{
switch (vType)
{
case EVT_STANDARD:
glColorPointer(colorSize, GL_UNSIGNED_BYTE, sizeof(S3DVertex), &(static_cast<const S3DVertex*>(vertices))[0].Color);
break;
case EVT_2TCOORDS:
glColorPointer(colorSize, GL_UNSIGNED_BYTE, sizeof(S3DVertex2TCoords), &(static_cast<const S3DVertex2TCoords*>(vertices))[0].Color);
break;
case EVT_TANGENTS:
glColorPointer(colorSize, GL_UNSIGNED_BYTE, sizeof(S3DVertexTangents), &(static_cast<const S3DVertexTangents*>(vertices))[0].Color);
break;
default:
break;
}
}
else
{
// avoid passing broken pointer to OpenGL
_IRR_DEBUG_BREAK_IF(ColorBuffer.size()==0);
glColorPointer(colorSize, GL_UNSIGNED_BYTE, 0, &ColorBuffer[0]);
}
}
switch (vType)
{
case EVT_STANDARD:
if (vertices)
{
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex), &(static_cast<const S3DVertex*>(vertices))[0].TCoords);
glVertexPointer(2, GL_FLOAT, sizeof(S3DVertex), &(static_cast<const S3DVertex*>(vertices))[0].Pos);
}
else
{
glColorPointer(colorSize, GL_UNSIGNED_BYTE, sizeof(S3DVertex), buffer_offset(24));
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex), buffer_offset(28));
glVertexPointer(2, GL_FLOAT, sizeof(S3DVertex), 0);
}
if (MultiTextureExtension && CurrentTexture[1])
{
extGlClientActiveTexture(GL_TEXTURE1_ARB);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
if (vertices)
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex), &(static_cast<const S3DVertex*>(vertices))[0].TCoords);
else
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex), buffer_offset(28));
}
break;
case EVT_2TCOORDS:
if (vertices)
{
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex2TCoords), &(static_cast<const S3DVertex2TCoords*>(vertices))[0].TCoords);
glVertexPointer(2, GL_FLOAT, sizeof(S3DVertex2TCoords), &(static_cast<const S3DVertex2TCoords*>(vertices))[0].Pos);
}
else
{
glColorPointer(colorSize, GL_UNSIGNED_BYTE, sizeof(S3DVertex2TCoords), buffer_offset(24));
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex2TCoords), buffer_offset(28));
glVertexPointer(2, GL_FLOAT, sizeof(S3DVertex2TCoords), buffer_offset(0));
}
if (MultiTextureExtension)
{
extGlClientActiveTexture(GL_TEXTURE1_ARB);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
if (vertices)
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex2TCoords), &(static_cast<const S3DVertex2TCoords*>(vertices))[0].TCoords2);
else
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertex2TCoords), buffer_offset(36));
}
break;
case EVT_TANGENTS:
if (vertices)
{
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertexTangents), &(static_cast<const S3DVertexTangents*>(vertices))[0].TCoords);
glVertexPointer(2, GL_FLOAT, sizeof(S3DVertexTangents), &(static_cast<const S3DVertexTangents*>(vertices))[0].Pos);
}
else
{
glColorPointer(colorSize, GL_UNSIGNED_BYTE, sizeof(S3DVertexTangents), buffer_offset(24));
glTexCoordPointer(2, GL_FLOAT, sizeof(S3DVertexTangents), buffer_offset(28));
glVertexPointer(2, GL_FLOAT, sizeof(S3DVertexTangents), buffer_offset(0));
}
break;
default:
break;
}
renderArray(indexList, primitiveCount, pType, iType);
if (MultiTextureExtension)
{
if ((vType!=EVT_STANDARD) || CurrentTexture[1])
{
extGlClientActiveTexture(GL_TEXTURE1_ARB);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
extGlClientActiveTexture(GL_TEXTURE0_ARB);
}
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
//! draws a set of 2d images, using a color and the alpha channel of the
//! texture if desired.
void COpenGLDriver::draw2DImageBatch(const video::ITexture* texture,
const core::array<core::position2d<s32> >& positions,
const core::array<core::rect<s32> >& sourceRects,
const core::rect<s32>* clipRect,
SColor color,
bool useAlphaChannelOfTexture)
{
if (!texture)
return;
const u32 drawCount = core::min_<u32>(positions.size(), sourceRects.size());
const core::dimension2d<u32>& ss = texture->getSize();
const f32 invW = 1.f / static_cast<f32>(ss.Width);
const f32 invH = 1.f / static_cast<f32>(ss.Height);
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
disableTextures(1);
if (!setActiveTexture(0, texture))
return;
setRenderStates2DMode(color.getAlpha()<255, true, useAlphaChannelOfTexture);
glColor4ub(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha());
glBegin(GL_QUADS);
for (u32 i=0; i<drawCount; ++i)
{
if (!sourceRects[i].isValid())
continue;
core::position2d<s32> targetPos(positions[i]);
core::position2d<s32> sourcePos(sourceRects[i].UpperLeftCorner);
// This needs to be signed as it may go negative.
core::dimension2d<s32> sourceSize(sourceRects[i].getSize());
if (clipRect)
{
if (targetPos.X < clipRect->UpperLeftCorner.X)
{
sourceSize.Width += targetPos.X - clipRect->UpperLeftCorner.X;
if (sourceSize.Width <= 0)
continue;
sourcePos.X -= targetPos.X - clipRect->UpperLeftCorner.X;
targetPos.X = clipRect->UpperLeftCorner.X;
}
if (targetPos.X + sourceSize.Width > clipRect->LowerRightCorner.X)
{
sourceSize.Width -= (targetPos.X + sourceSize.Width) - clipRect->LowerRightCorner.X;
if (sourceSize.Width <= 0)
continue;
}
if (targetPos.Y < clipRect->UpperLeftCorner.Y)
{
sourceSize.Height += targetPos.Y - clipRect->UpperLeftCorner.Y;
if (sourceSize.Height <= 0)
continue;
sourcePos.Y -= targetPos.Y - clipRect->UpperLeftCorner.Y;
targetPos.Y = clipRect->UpperLeftCorner.Y;
}
if (targetPos.Y + sourceSize.Height > clipRect->LowerRightCorner.Y)
{
sourceSize.Height -= (targetPos.Y + sourceSize.Height) - clipRect->LowerRightCorner.Y;
if (sourceSize.Height <= 0)
continue;
}
}
// clip these coordinates
if (targetPos.X<0)
{
sourceSize.Width += targetPos.X;
if (sourceSize.Width <= 0)
continue;
sourcePos.X -= targetPos.X;
targetPos.X = 0;
}
if (targetPos.X + sourceSize.Width > (s32)renderTargetSize.Width)
{
sourceSize.Width -= (targetPos.X + sourceSize.Width) - renderTargetSize.Width;
if (sourceSize.Width <= 0)
continue;
}
if (targetPos.Y<0)
{
sourceSize.Height += targetPos.Y;
if (sourceSize.Height <= 0)
continue;
sourcePos.Y -= targetPos.Y;
targetPos.Y = 0;
}
if (targetPos.Y + sourceSize.Height > (s32)renderTargetSize.Height)
{
sourceSize.Height -= (targetPos.Y + sourceSize.Height) - renderTargetSize.Height;
if (sourceSize.Height <= 0)
continue;
}
// ok, we've clipped everything.
// now draw it.
const core::rect<f32> tcoords(
sourcePos.X * invW,
sourcePos.Y * invH,
(sourcePos.X + sourceSize.Width) * invW,
(sourcePos.Y + sourceSize.Height) * invH);
const core::rect<s32> poss(targetPos, sourceSize);
glTexCoord2f(tcoords.UpperLeftCorner.X, tcoords.UpperLeftCorner.Y);
glVertex2f(GLfloat(poss.UpperLeftCorner.X), GLfloat(poss.UpperLeftCorner.Y));
glTexCoord2f(tcoords.LowerRightCorner.X, tcoords.UpperLeftCorner.Y);
glVertex2f(GLfloat(poss.LowerRightCorner.X), GLfloat(poss.UpperLeftCorner.Y));
glTexCoord2f(tcoords.LowerRightCorner.X, tcoords.LowerRightCorner.Y);
glVertex2f(GLfloat(poss.LowerRightCorner.X), GLfloat(poss.LowerRightCorner.Y));
glTexCoord2f(tcoords.UpperLeftCorner.X, tcoords.LowerRightCorner.Y);
glVertex2f(GLfloat(poss.UpperLeftCorner.X), GLfloat(poss.LowerRightCorner.Y));
}
glEnd();
}
//! draws a 2d image, using a color and the alpha channel of the texture if
//! desired. The image is drawn at pos, clipped against clipRect (if != 0).
//! Only the subtexture defined by sourceRect is used.
void COpenGLDriver::draw2DImage(const video::ITexture* texture,
const core::position2d<s32>& pos,
const core::rect<s32>& sourceRect,
const core::rect<s32>* clipRect, SColor color,
bool useAlphaChannelOfTexture)
{
if (!texture)
return;
if (!sourceRect.isValid())
return;
core::position2d<s32> targetPos(pos);
core::position2d<s32> sourcePos(sourceRect.UpperLeftCorner);
// This needs to be signed as it may go negative.
core::dimension2d<s32> sourceSize(sourceRect.getSize());
if (clipRect)
{
if (targetPos.X < clipRect->UpperLeftCorner.X)
{
sourceSize.Width += targetPos.X - clipRect->UpperLeftCorner.X;
if (sourceSize.Width <= 0)
return;
sourcePos.X -= targetPos.X - clipRect->UpperLeftCorner.X;
targetPos.X = clipRect->UpperLeftCorner.X;
}
if (targetPos.X + sourceSize.Width > clipRect->LowerRightCorner.X)
{
sourceSize.Width -= (targetPos.X + sourceSize.Width) - clipRect->LowerRightCorner.X;
if (sourceSize.Width <= 0)
return;
}
if (targetPos.Y < clipRect->UpperLeftCorner.Y)
{
sourceSize.Height += targetPos.Y - clipRect->UpperLeftCorner.Y;
if (sourceSize.Height <= 0)
return;
sourcePos.Y -= targetPos.Y - clipRect->UpperLeftCorner.Y;
targetPos.Y = clipRect->UpperLeftCorner.Y;
}
if (targetPos.Y + sourceSize.Height > clipRect->LowerRightCorner.Y)
{
sourceSize.Height -= (targetPos.Y + sourceSize.Height) - clipRect->LowerRightCorner.Y;
if (sourceSize.Height <= 0)
return;
}
}
// clip these coordinates
if (targetPos.X<0)
{
sourceSize.Width += targetPos.X;
if (sourceSize.Width <= 0)
return;
sourcePos.X -= targetPos.X;
targetPos.X = 0;
}
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
if (targetPos.X + sourceSize.Width > (s32)renderTargetSize.Width)
{
sourceSize.Width -= (targetPos.X + sourceSize.Width) - renderTargetSize.Width;
if (sourceSize.Width <= 0)
return;
}
if (targetPos.Y<0)
{
sourceSize.Height += targetPos.Y;
if (sourceSize.Height <= 0)
return;
sourcePos.Y -= targetPos.Y;
targetPos.Y = 0;
}
if (targetPos.Y + sourceSize.Height > (s32)renderTargetSize.Height)
{
sourceSize.Height -= (targetPos.Y + sourceSize.Height) - renderTargetSize.Height;
if (sourceSize.Height <= 0)
return;
}
// ok, we've clipped everything.
// now draw it.
const core::dimension2d<u32>& ss = texture->getSize();
const f32 invW = 1.f / static_cast<f32>(ss.Width);
const f32 invH = 1.f / static_cast<f32>(ss.Height);
const core::rect<f32> tcoords(
sourcePos.X * invW,
sourcePos.Y * invH,
(sourcePos.X + sourceSize.Width) * invW,
(sourcePos.Y + sourceSize.Height) * invH);
const core::rect<s32> poss(targetPos, sourceSize);
disableTextures(1);
if (!setActiveTexture(0, texture))
return;
setRenderStates2DMode(color.getAlpha()<255, true, useAlphaChannelOfTexture);
glColor4ub(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha());
glBegin(GL_QUADS);
glTexCoord2f(tcoords.UpperLeftCorner.X, tcoords.UpperLeftCorner.Y);
glVertex2f(GLfloat(poss.UpperLeftCorner.X), GLfloat(poss.UpperLeftCorner.Y));
glTexCoord2f(tcoords.LowerRightCorner.X, tcoords.UpperLeftCorner.Y);
glVertex2f(GLfloat(poss.LowerRightCorner.X), GLfloat(poss.UpperLeftCorner.Y));
glTexCoord2f(tcoords.LowerRightCorner.X, tcoords.LowerRightCorner.Y);
glVertex2f(GLfloat(poss.LowerRightCorner.X), GLfloat(poss.LowerRightCorner.Y));
glTexCoord2f(tcoords.UpperLeftCorner.X, tcoords.LowerRightCorner.Y);
glVertex2f(GLfloat(poss.UpperLeftCorner.X), GLfloat(poss.LowerRightCorner.Y));
glEnd();
}
//! The same, but with a four element array of colors, one for each vertex
void COpenGLDriver::draw2DImage(const video::ITexture* texture, const core::rect<s32>& destRect,
const core::rect<s32>& sourceRect, const core::rect<s32>* clipRect,
const video::SColor* const colors, bool useAlphaChannelOfTexture)
{
if (!texture)
return;
const core::dimension2d<u32>& ss = texture->getSize();
const f32 invW = 1.f / static_cast<f32>(ss.Width);
const f32 invH = 1.f / static_cast<f32>(ss.Height);
const core::rect<f32> tcoords(
sourceRect.UpperLeftCorner.X * invW,
sourceRect.UpperLeftCorner.Y * invH,
sourceRect.LowerRightCorner.X * invW,
sourceRect.LowerRightCorner.Y *invH);
const video::SColor temp[4] =
{
0xFFFFFFFF,
0xFFFFFFFF,
0xFFFFFFFF,
0xFFFFFFFF
};
const video::SColor* const useColor = colors ? colors : temp;
disableTextures(1);
setActiveTexture(0, texture);
setRenderStates2DMode(useColor[0].getAlpha()<255 || useColor[1].getAlpha()<255 ||
useColor[2].getAlpha()<255 || useColor[3].getAlpha()<255,
true, useAlphaChannelOfTexture);
if (clipRect)
{
if (!clipRect->isValid())
return;
glEnable(GL_SCISSOR_TEST);
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
glScissor(clipRect->UpperLeftCorner.X, renderTargetSize.Height-clipRect->LowerRightCorner.Y,
clipRect->getWidth(), clipRect->getHeight());
}
glBegin(GL_QUADS);
glColor4ub(useColor[0].getRed(), useColor[0].getGreen(), useColor[0].getBlue(), useColor[0].getAlpha());
glTexCoord2f(tcoords.UpperLeftCorner.X, tcoords.UpperLeftCorner.Y);
glVertex2f(GLfloat(destRect.UpperLeftCorner.X), GLfloat(destRect.UpperLeftCorner.Y));
glColor4ub(useColor[3].getRed(), useColor[3].getGreen(), useColor[3].getBlue(), useColor[3].getAlpha());
glTexCoord2f(tcoords.LowerRightCorner.X, tcoords.UpperLeftCorner.Y);
glVertex2f(GLfloat(destRect.LowerRightCorner.X), GLfloat(destRect.UpperLeftCorner.Y));
glColor4ub(useColor[2].getRed(), useColor[2].getGreen(), useColor[2].getBlue(), useColor[2].getAlpha());
glTexCoord2f(tcoords.LowerRightCorner.X, tcoords.LowerRightCorner.Y);
glVertex2f(GLfloat(destRect.LowerRightCorner.X), GLfloat(destRect.LowerRightCorner.Y));
glColor4ub(useColor[1].getRed(), useColor[1].getGreen(), useColor[1].getBlue(), useColor[1].getAlpha());
glTexCoord2f(tcoords.UpperLeftCorner.X, tcoords.LowerRightCorner.Y);
glVertex2f(GLfloat(destRect.UpperLeftCorner.X), GLfloat(destRect.LowerRightCorner.Y));
glEnd();
if (clipRect)
glDisable(GL_SCISSOR_TEST);
}
//! draws a set of 2d images, using a color and the alpha channel of the
//! texture if desired. The images are drawn beginning at pos and concatenated
//! in one line. All drawings are clipped against clipRect (if != 0).
//! The subtextures are defined by the array of sourceRects and are chosen
//! by the indices given.
void COpenGLDriver::draw2DImage(const video::ITexture* texture,
const core::position2d<s32>& pos,
const core::array<core::rect<s32> >& sourceRects,
const core::array<s32>& indices,
const core::rect<s32>* clipRect, SColor color,
bool useAlphaChannelOfTexture)
{
if (!texture)
return;
disableTextures(1);
if (!setActiveTexture(0, texture))
return;
setRenderStates2DMode(color.getAlpha()<255, true, useAlphaChannelOfTexture);
glColor4ub(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha());
if (clipRect)
{
if (!clipRect->isValid())
return;
glEnable(GL_SCISSOR_TEST);
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
glScissor(clipRect->UpperLeftCorner.X, renderTargetSize.Height-clipRect->LowerRightCorner.Y,
clipRect->getWidth(),clipRect->getHeight());
}
const core::dimension2d<u32>& ss = texture->getSize();
core::position2d<s32> targetPos(pos);
const f32 invW = 1.f / static_cast<f32>(ss.Width);
const f32 invH = 1.f / static_cast<f32>(ss.Height);
for (u32 i=0; i<indices.size(); ++i)
{
const s32 currentIndex = indices[i];
if (!sourceRects[currentIndex].isValid())
break;
const core::rect<f32> tcoords(
sourceRects[currentIndex].UpperLeftCorner.X * invW,
sourceRects[currentIndex].UpperLeftCorner.Y * invH,
sourceRects[currentIndex].LowerRightCorner.X * invW,
sourceRects[currentIndex].LowerRightCorner.Y * invH);
const core::rect<s32> poss(targetPos, sourceRects[currentIndex].getSize());
glBegin(GL_QUADS);
glTexCoord2f(tcoords.UpperLeftCorner.X, tcoords.UpperLeftCorner.Y);
glVertex2f(GLfloat(poss.UpperLeftCorner.X), GLfloat(poss.UpperLeftCorner.Y));
glTexCoord2f(tcoords.LowerRightCorner.X, tcoords.UpperLeftCorner.Y);
glVertex2f(GLfloat(poss.LowerRightCorner.X), GLfloat(poss.UpperLeftCorner.Y));
glTexCoord2f(tcoords.LowerRightCorner.X, tcoords.LowerRightCorner.Y);
glVertex2f(GLfloat(poss.LowerRightCorner.X), GLfloat(poss.LowerRightCorner.Y));
glTexCoord2f(tcoords.UpperLeftCorner.X, tcoords.LowerRightCorner.Y);
glVertex2f(GLfloat(poss.UpperLeftCorner.X), GLfloat(poss.LowerRightCorner.Y));
glEnd();
targetPos.X += sourceRects[currentIndex].getWidth();
}
if (clipRect)
glDisable(GL_SCISSOR_TEST);
}
//! draw a 2d rectangle
void COpenGLDriver::draw2DRectangle(SColor color, const core::rect<s32>& position,
const core::rect<s32>* clip)
{
disableTextures();
setRenderStates2DMode(color.getAlpha() < 255, false, false);
core::rect<s32> pos = position;
if (clip)
pos.clipAgainst(*clip);
if (!pos.isValid())
return;
glColor4ub(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha());
glRectf(GLfloat(pos.UpperLeftCorner.X), GLfloat(pos.UpperLeftCorner.Y),
GLfloat(pos.LowerRightCorner.X), GLfloat(pos.LowerRightCorner.Y));
}
//! draw an 2d rectangle
void COpenGLDriver::draw2DRectangle(const core::rect<s32>& position,
SColor colorLeftUp, SColor colorRightUp, SColor colorLeftDown, SColor colorRightDown,
const core::rect<s32>* clip)
{
core::rect<s32> pos = position;
if (clip)
pos.clipAgainst(*clip);
if (!pos.isValid())
return;
disableTextures();
setRenderStates2DMode(colorLeftUp.getAlpha() < 255 ||
colorRightUp.getAlpha() < 255 ||
colorLeftDown.getAlpha() < 255 ||
colorRightDown.getAlpha() < 255, false, false);
glBegin(GL_QUADS);
glColor4ub(colorLeftUp.getRed(), colorLeftUp.getGreen(),
colorLeftUp.getBlue(), colorLeftUp.getAlpha());
glVertex2f(GLfloat(pos.UpperLeftCorner.X), GLfloat(pos.UpperLeftCorner.Y));
glColor4ub(colorRightUp.getRed(), colorRightUp.getGreen(),
colorRightUp.getBlue(), colorRightUp.getAlpha());
glVertex2f(GLfloat(pos.LowerRightCorner.X), GLfloat(pos.UpperLeftCorner.Y));
glColor4ub(colorRightDown.getRed(), colorRightDown.getGreen(),
colorRightDown.getBlue(), colorRightDown.getAlpha());
glVertex2f(GLfloat(pos.LowerRightCorner.X), GLfloat(pos.LowerRightCorner.Y));
glColor4ub(colorLeftDown.getRed(), colorLeftDown.getGreen(),
colorLeftDown.getBlue(), colorLeftDown.getAlpha());
glVertex2f(GLfloat(pos.UpperLeftCorner.X), GLfloat(pos.LowerRightCorner.Y));
glEnd();
}
//! Draws a 2d line.
void COpenGLDriver::draw2DLine(const core::position2d<s32>& start,
const core::position2d<s32>& end, SColor color)
{
if (start==end)
drawPixel(start.X, start.Y, color);
else
{
disableTextures();
setRenderStates2DMode(color.getAlpha() < 255, false, false);
glBegin(GL_LINES);
glColor4ub(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha());
GLfloat x=(GLfloat)start.X;
GLfloat y=(GLfloat)start.Y;
if (x>end.X)
x += 0.5f;
if (y>end.Y)
y += 0.5f;
glVertex2f(GLfloat(x), GLfloat(y));
x=(GLfloat)end.X;
y=(GLfloat)end.Y;
if (x>start.X)
x += 0.5f;
if (y>start.Y)
y += 0.5f;
glVertex2f(GLfloat(x), GLfloat(y));
glEnd();
}
}
//! Draws a pixel
void COpenGLDriver::drawPixel(u32 x, u32 y, const SColor &color)
{
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
if (x > (u32)renderTargetSize.Width || y > (u32)renderTargetSize.Height)
return;
disableTextures();
setRenderStates2DMode(color.getAlpha() < 255, false, false);
glBegin(GL_POINTS);
glColor4ub(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha());
glVertex2i(x, y);
glEnd();
}
bool COpenGLDriver::setActiveTexture(u32 stage, const video::ITexture* texture)
{
if (stage >= MaxSupportedTextures)
return false;
if (CurrentTexture[stage]==texture)
return true;
if (MultiTextureExtension)
extGlActiveTexture(GL_TEXTURE0_ARB + stage);
CurrentTexture.set(stage,texture);
if (!texture)
{
if (!useCoreContext)
glDisable(GL_TEXTURE_2D);
return true;
}
else
{
if (texture->getDriverType() != EDT_OPENGL)
{
if (!useCoreContext)
glDisable(GL_TEXTURE_2D);
CurrentTexture.set(stage, 0);
os::Printer::log("Fatal Error: Tried to set a texture not owned by this driver.", ELL_ERROR);
return false;
}
if (!useCoreContext)
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture->getOpenGLTextureName());
}
return true;
}
//! disables all textures beginning with the optional fromStage parameter. Otherwise all texture stages are disabled.
//! Returns whether disabling was successful or not.
bool COpenGLDriver::disableTextures(u32 fromStage)
{
bool result=true;
for (u32 i=fromStage; i<MaxSupportedTextures; ++i)
result &= setActiveTexture(i, 0);
return result;
}
//! creates a matrix in supplied GLfloat array to pass to OpenGL
inline void COpenGLDriver::getGLMatrix(GLfloat gl_matrix[16], const core::matrix4& m)
{
memcpy(gl_matrix, m.pointer(), 16 * sizeof(f32));
}
//! creates a opengltexturematrix from a D3D style texture matrix
inline void COpenGLDriver::getGLTextureMatrix(GLfloat *o, const core::matrix4& m)
{
o[0] = m[0];
o[1] = m[1];
o[2] = 0.f;
o[3] = 0.f;
o[4] = m[4];
o[5] = m[5];
o[6] = 0.f;
o[7] = 0.f;
o[8] = 0.f;
o[9] = 0.f;
o[10] = 1.f;
o[11] = 0.f;
o[12] = m[8];
o[13] = m[9];
o[14] = 0.f;
o[15] = 1.f;
}
//! returns a device dependent texture from a software surface (IImage)
video::ITexture* COpenGLDriver::createDeviceDependentTexture(IImage* surface, const io::path& name, void* mipmapData)
{
return new COpenGLTexture(surface, name, mipmapData, this);
}
//! Sets a material. All 3d drawing functions draw geometry now using this material.
void COpenGLDriver::setMaterial(const SMaterial& material)
{
Material = material;
OverrideMaterial.apply(Material);
for (s32 i = MaxTextureUnits-1; i>= 0; --i)
{
setActiveTexture(i, material.getTexture(i));
setTransform ((E_TRANSFORMATION_STATE) (ETS_TEXTURE_0 + i),
Material.getTextureMatrix(i));
}
}
//! prints error if an error happened.
bool COpenGLDriver::testGLError()
{
#ifdef _DEBUG
GLenum g = glGetError();
switch (g)
{
case GL_NO_ERROR:
return false;
case GL_INVALID_ENUM:
os::Printer::log("GL_INVALID_ENUM", ELL_ERROR); break;
case GL_INVALID_VALUE:
os::Printer::log("GL_INVALID_VALUE", ELL_ERROR); break;
case GL_INVALID_OPERATION:
os::Printer::log("GL_INVALID_OPERATION", ELL_ERROR); break;
case GL_STACK_OVERFLOW:
os::Printer::log("GL_STACK_OVERFLOW", ELL_ERROR); break;
case GL_STACK_UNDERFLOW:
os::Printer::log("GL_STACK_UNDERFLOW", ELL_ERROR); break;
case GL_OUT_OF_MEMORY:
os::Printer::log("GL_OUT_OF_MEMORY", ELL_ERROR); break;
case GL_TABLE_TOO_LARGE:
os::Printer::log("GL_TABLE_TOO_LARGE", ELL_ERROR); break;
#if defined(GL_EXT_framebuffer_object)
case GL_INVALID_FRAMEBUFFER_OPERATION_EXT:
os::Printer::log("GL_INVALID_FRAMEBUFFER_OPERATION", ELL_ERROR); break;
#endif
};
// _IRR_DEBUG_BREAK_IF(true);
return true;
#else
return false;
#endif
}
//! sets the needed renderstates
void COpenGLDriver::setRenderStates3DMode()
{
if (CurrentRenderMode != ERM_3D)
{
// Reset Texture Stages
glDisable(GL_BLEND);
if (!useCoreContext)
glDisable(GL_ALPHA_TEST);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// switch back the matrices
if (!useCoreContext)
glMatrixMode(GL_MODELVIEW);
if (!useCoreContext)
glLoadMatrixf((Matrices[ETS_VIEW] * Matrices[ETS_WORLD]).pointer());
if (!useCoreContext)
glMatrixMode(GL_PROJECTION);
if (!useCoreContext)
glLoadMatrixf(Matrices[ETS_PROJECTION].pointer());
ResetRenderStates = true;
#ifdef GL_EXT_clip_volume_hint
// if (FeatureAvailable[IRR_EXT_clip_volume_hint])
// glHint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT, GL_NICEST);
#endif
}
if (ResetRenderStates || LastMaterial != Material)
{
// unset old material
if (LastMaterial.MaterialType != Material.MaterialType &&
static_cast<u32>(LastMaterial.MaterialType) < MaterialRenderers.size())
MaterialRenderers[LastMaterial.MaterialType].Renderer->OnUnsetMaterial();
// set new material.
if (static_cast<u32>(Material.MaterialType) < MaterialRenderers.size())
MaterialRenderers[Material.MaterialType].Renderer->OnSetMaterial(
Material, LastMaterial, ResetRenderStates, this);
LastMaterial = Material;
ResetRenderStates = false;
}
if (static_cast<u32>(Material.MaterialType) < MaterialRenderers.size())
MaterialRenderers[Material.MaterialType].Renderer->OnRender(this, video::EVT_STANDARD);
CurrentRenderMode = ERM_3D;
}
//! Get native wrap mode value
GLint COpenGLDriver::getTextureWrapMode(const u8 clamp)
{
GLint mode=GL_REPEAT;
switch (clamp)
{
case ETC_REPEAT:
mode=GL_REPEAT;
break;
case ETC_CLAMP:
mode=GL_CLAMP;
break;
case ETC_CLAMP_TO_EDGE:
#ifdef GL_VERSION_1_2
if (Version>101)
mode=GL_CLAMP_TO_EDGE;
else
#endif
#ifdef GL_SGIS_texture_edge_clamp
if (FeatureAvailable[IRR_SGIS_texture_edge_clamp])
mode=GL_CLAMP_TO_EDGE_SGIS;
else
#endif
// fallback
mode=GL_CLAMP;
break;
case ETC_CLAMP_TO_BORDER:
#ifdef GL_VERSION_1_3
if (Version>102)
mode=GL_CLAMP_TO_BORDER;
else
#endif
#ifdef GL_ARB_texture_border_clamp
if (FeatureAvailable[IRR_ARB_texture_border_clamp])
mode=GL_CLAMP_TO_BORDER_ARB;
else
#endif
#ifdef GL_SGIS_texture_border_clamp
if (FeatureAvailable[IRR_SGIS_texture_border_clamp])
mode=GL_CLAMP_TO_BORDER_SGIS;
else
#endif
// fallback
mode=GL_CLAMP;
break;
case ETC_MIRROR:
#ifdef GL_VERSION_1_4
if (Version>103)
mode=GL_MIRRORED_REPEAT;
else
#endif
#ifdef GL_ARB_texture_border_clamp
if (FeatureAvailable[IRR_ARB_texture_mirrored_repeat])
mode=GL_MIRRORED_REPEAT_ARB;
else
#endif
#ifdef GL_IBM_texture_mirrored_repeat
if (FeatureAvailable[IRR_IBM_texture_mirrored_repeat])
mode=GL_MIRRORED_REPEAT_IBM;
else
#endif
mode=GL_REPEAT;
break;
case ETC_MIRROR_CLAMP:
#ifdef GL_EXT_texture_mirror_clamp
if (FeatureAvailable[IRR_EXT_texture_mirror_clamp])
mode=GL_MIRROR_CLAMP_EXT;
else
#endif
#if defined(GL_ATI_texture_mirror_once)
if (FeatureAvailable[IRR_ATI_texture_mirror_once])
mode=GL_MIRROR_CLAMP_ATI;
else
#endif
mode=GL_CLAMP;
break;
case ETC_MIRROR_CLAMP_TO_EDGE:
#ifdef GL_EXT_texture_mirror_clamp
if (FeatureAvailable[IRR_EXT_texture_mirror_clamp])
mode=GL_MIRROR_CLAMP_TO_EDGE_EXT;
else
#endif
#if defined(GL_ATI_texture_mirror_once)
if (FeatureAvailable[IRR_ATI_texture_mirror_once])
mode=GL_MIRROR_CLAMP_TO_EDGE_ATI;
else
#endif
mode=GL_CLAMP;
break;
case ETC_MIRROR_CLAMP_TO_BORDER:
#ifdef GL_EXT_texture_mirror_clamp
if (FeatureAvailable[IRR_EXT_texture_mirror_clamp])
mode=GL_MIRROR_CLAMP_TO_BORDER_EXT;
else
#endif
mode=GL_CLAMP;
break;
}
return mode;
}
void COpenGLDriver::setWrapMode(const SMaterial& material)
{
// texture address mode
// Has to be checked always because it depends on the textures
for (u32 u=0; u<MaxTextureUnits; ++u)
{
if (!CurrentTexture[u])
continue;
if (MultiTextureExtension)
extGlActiveTexture(GL_TEXTURE0_ARB + u);
else if (u>0)
break; // stop loop
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, getTextureWrapMode(material.TextureLayer[u].TextureWrapU));
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, getTextureWrapMode(material.TextureLayer[u].TextureWrapV));
}
}
//! Can be called by an IMaterialRenderer to make its work easier.
void COpenGLDriver::setBasicRenderStates(const SMaterial& material, const SMaterial& lastmaterial,
bool resetAllRenderStates)
{
if (resetAllRenderStates ||
lastmaterial.ColorMaterial != material.ColorMaterial)
{
switch (material.ColorMaterial)
{
case ECM_NONE:
glDisable(GL_COLOR_MATERIAL);
break;
case ECM_DIFFUSE:
if (!useCoreContext)
glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
break;
case ECM_AMBIENT:
if (!useCoreContext)
glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT);
break;
case ECM_EMISSIVE:
if (!useCoreContext)
glColorMaterial(GL_FRONT_AND_BACK, GL_EMISSION);
break;
case ECM_SPECULAR:
if (!useCoreContext)
glColorMaterial(GL_FRONT_AND_BACK, GL_SPECULAR);
break;
case ECM_DIFFUSE_AND_AMBIENT:
if (!useCoreContext)
glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
break;
}
if (material.ColorMaterial != ECM_NONE && !useCoreContext)
glEnable(GL_COLOR_MATERIAL);
}
if (resetAllRenderStates ||
lastmaterial.AmbientColor != material.AmbientColor ||
lastmaterial.DiffuseColor != material.DiffuseColor ||
lastmaterial.EmissiveColor != material.EmissiveColor ||
lastmaterial.ColorMaterial != material.ColorMaterial)
{
GLfloat color[4];
const f32 inv = 1.0f / 255.0f;
if ((material.ColorMaterial != video::ECM_AMBIENT) &&
(material.ColorMaterial != video::ECM_DIFFUSE_AND_AMBIENT))
{
color[0] = material.AmbientColor.getRed() * inv;
color[1] = material.AmbientColor.getGreen() * inv;
color[2] = material.AmbientColor.getBlue() * inv;
color[3] = material.AmbientColor.getAlpha() * inv;
if (!useCoreContext)
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, color);
}
if ((material.ColorMaterial != video::ECM_DIFFUSE) &&
(material.ColorMaterial != video::ECM_DIFFUSE_AND_AMBIENT))
{
color[0] = material.DiffuseColor.getRed() * inv;
color[1] = material.DiffuseColor.getGreen() * inv;
color[2] = material.DiffuseColor.getBlue() * inv;
color[3] = material.DiffuseColor.getAlpha() * inv;
if (!useCoreContext)
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, color);
}
if (material.ColorMaterial != video::ECM_EMISSIVE)
{
color[0] = material.EmissiveColor.getRed() * inv;
color[1] = material.EmissiveColor.getGreen() * inv;
color[2] = material.EmissiveColor.getBlue() * inv;
color[3] = material.EmissiveColor.getAlpha() * inv;
if (!useCoreContext)
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, color);
}
}
if (resetAllRenderStates ||
lastmaterial.SpecularColor != material.SpecularColor ||
lastmaterial.Shininess != material.Shininess ||
lastmaterial.ColorMaterial != material.ColorMaterial)
{
GLfloat color[4]={0.f,0.f,0.f,1.f};
const f32 inv = 1.0f / 255.0f;
if (!useCoreContext)
glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, material.Shininess);
// disable Specular colors if no shininess is set
if ((material.Shininess != 0.0f) &&
(material.ColorMaterial != video::ECM_SPECULAR))
{
#ifdef GL_EXT_separate_specular_color
if (FeatureAvailable[IRR_EXT_separate_specular_color] && !useCoreContext)
glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
#endif
color[0] = material.SpecularColor.getRed() * inv;
color[1] = material.SpecularColor.getGreen() * inv;
color[2] = material.SpecularColor.getBlue() * inv;
color[3] = material.SpecularColor.getAlpha() * inv;
}
#ifdef GL_EXT_separate_specular_color
else if (FeatureAvailable[IRR_EXT_separate_specular_color] && !useCoreContext)
glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SINGLE_COLOR);
#endif
if (!useCoreContext)
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, color);
}
// Texture filter
// Has to be checked always because it depends on the textures
// Filtering has to be set for each texture layer
for (u32 i=0; i<MaxTextureUnits; ++i)
{
if (!CurrentTexture[i])
continue;
if (MultiTextureExtension)
extGlActiveTexture(GL_TEXTURE0_ARB + i);
else if (i>0)
break;
#ifdef GL_EXT_texture_lod_bias
if (FeatureAvailable[IRR_EXT_texture_lod_bias])
{
if (material.TextureLayer[i].LODBias)
{
const float tmp = core::clamp(material.TextureLayer[i].LODBias * 0.125f, -MaxTextureLODBias, MaxTextureLODBias);
glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, tmp);
}
else
glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, 0.f);
}
#endif
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
(material.TextureLayer[i].BilinearFilter || material.TextureLayer[i].TrilinearFilter) ? GL_LINEAR : GL_NEAREST);
if (material.UseMipMaps && CurrentTexture[i]->hasMipMaps())
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
material.TextureLayer[i].TrilinearFilter ? GL_LINEAR_MIPMAP_LINEAR :
material.TextureLayer[i].BilinearFilter ? GL_LINEAR_MIPMAP_NEAREST :
GL_NEAREST_MIPMAP_NEAREST);
else
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
(material.TextureLayer[i].BilinearFilter || material.TextureLayer[i].TrilinearFilter) ? GL_LINEAR : GL_NEAREST);
#ifdef GL_EXT_texture_filter_anisotropic
if (FeatureAvailable[IRR_EXT_texture_filter_anisotropic])
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT,
material.TextureLayer[i].AnisotropicFilter>1 ? core::min_(MaxAnisotropy, material.TextureLayer[i].AnisotropicFilter) : 1);
#endif
}
// fillmode
if (resetAllRenderStates || (lastmaterial.Wireframe != material.Wireframe) || (lastmaterial.PointCloud != material.PointCloud))
glPolygonMode(GL_FRONT_AND_BACK, material.Wireframe ? GL_LINE : material.PointCloud? GL_POINT : GL_FILL);
// shademode
if (resetAllRenderStates || (lastmaterial.GouraudShading != material.GouraudShading))
{
if (material.GouraudShading && !useCoreContext)
glShadeModel(GL_SMOOTH);
else if (!useCoreContext)
glShadeModel(GL_FLAT);
}
// lighting
if (resetAllRenderStates || (lastmaterial.Lighting != material.Lighting))
{
if (material.Lighting && !useCoreContext)
glEnable(GL_LIGHTING);
else if (!useCoreContext)
glDisable(GL_LIGHTING);
}
// zbuffer
if (resetAllRenderStates || lastmaterial.ZBuffer != material.ZBuffer)
{
switch (material.ZBuffer)
{
case ECFN_NEVER:
glDisable(GL_DEPTH_TEST);
break;
case ECFN_LESSEQUAL:
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
break;
case ECFN_EQUAL:
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_EQUAL);
break;
case ECFN_LESS:
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
break;
case ECFN_NOTEQUAL:
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_NOTEQUAL);
break;
case ECFN_GREATEREQUAL:
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_GEQUAL);
break;
case ECFN_GREATER:
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_GREATER);
break;
case ECFN_ALWAYS:
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_ALWAYS);
break;
}
}
// zwrite
// if (resetAllRenderStates || lastmaterial.ZWriteEnable != material.ZWriteEnable)
{
if (material.ZWriteEnable && (AllowZWriteOnTransparent || !material.isTransparent()))
{
glDepthMask(GL_TRUE);
}
else
glDepthMask(GL_FALSE);
}
// back face culling
if (resetAllRenderStates || (lastmaterial.FrontfaceCulling != material.FrontfaceCulling) || (lastmaterial.BackfaceCulling != material.BackfaceCulling))
{
if ((material.FrontfaceCulling) && (material.BackfaceCulling))
{
glCullFace(GL_FRONT_AND_BACK);
glEnable(GL_CULL_FACE);
}
else
if (material.BackfaceCulling)
{
glCullFace(GL_BACK);
glEnable(GL_CULL_FACE);
}
else
if (material.FrontfaceCulling)
{
glCullFace(GL_FRONT);
glEnable(GL_CULL_FACE);
}
else
glDisable(GL_CULL_FACE);
}
// fog
if (resetAllRenderStates || lastmaterial.FogEnable != material.FogEnable)
{
if (material.FogEnable && !useCoreContext)
glEnable(GL_FOG);
else if (!useCoreContext)
glDisable(GL_FOG);
}
// normalization
if (resetAllRenderStates || lastmaterial.NormalizeNormals != material.NormalizeNormals)
{
if (material.NormalizeNormals && !useCoreContext)
glEnable(GL_NORMALIZE);
else if (!useCoreContext)
glDisable(GL_NORMALIZE);
}
// Color Mask
if (resetAllRenderStates || lastmaterial.ColorMask != material.ColorMask)
{
glColorMask(
(material.ColorMask & ECP_RED)?GL_TRUE:GL_FALSE,
(material.ColorMask & ECP_GREEN)?GL_TRUE:GL_FALSE,
(material.ColorMask & ECP_BLUE)?GL_TRUE:GL_FALSE,
(material.ColorMask & ECP_ALPHA)?GL_TRUE:GL_FALSE);
}
if (queryFeature(EVDF_BLEND_OPERATIONS) &&
(resetAllRenderStates|| lastmaterial.BlendOperation != material.BlendOperation))
{
if (material.BlendOperation==EBO_NONE)
glDisable(GL_BLEND);
else
{
glEnable(GL_BLEND);
#if defined(GL_EXT_blend_subtract) || defined(GL_EXT_blend_minmax) || defined(GL_EXT_blend_logic_op) || defined(GL_VERSION_1_2)
switch (material.BlendOperation)
{
case EBO_SUBTRACT:
#if defined(GL_EXT_blend_subtract)
if (FeatureAvailable[IRR_EXT_blend_subtract] || (Version>=120))
extGlBlendEquation(GL_FUNC_SUBTRACT_EXT);
#elif defined(GL_VERSION_1_2)
if (Version>=120)
extGlBlendEquation(GL_FUNC_SUBTRACT);
#endif
break;
case EBO_REVSUBTRACT:
#if defined(GL_EXT_blend_subtract)
if (FeatureAvailable[IRR_EXT_blend_subtract] || (Version>=120))
extGlBlendEquation(GL_FUNC_REVERSE_SUBTRACT_EXT);
#elif defined(GL_VERSION_1_2)
if (Version>=120)
extGlBlendEquation(GL_FUNC_REVERSE_SUBTRACT);
#endif
break;
case EBO_MIN:
#if defined(GL_EXT_blend_minmax)
if (FeatureAvailable[IRR_EXT_blend_minmax] || (Version>=120))
extGlBlendEquation(GL_MIN_EXT);
#elif defined(GL_VERSION_1_2)
if (Version>=120)
extGlBlendEquation(GL_MIN);
#endif
break;
case EBO_MAX:
#if defined(GL_EXT_blend_minmax)
if (FeatureAvailable[IRR_EXT_blend_minmax] || (Version>=120))
extGlBlendEquation(GL_MAX_EXT);
#elif defined(GL_VERSION_1_2)
if (Version>=120)
extGlBlendEquation(GL_MAX);
#endif
break;
case EBO_MIN_FACTOR:
#if defined(GL_AMD_blend_minmax_factor)
if (FeatureAvailable[IRR_AMD_blend_minmax_factor])
extGlBlendEquation(GL_FACTOR_MIN_AMD);
#endif
// fallback in case of missing extension
#if defined(GL_VERSION_1_2)
#if defined(GL_AMD_blend_minmax_factor)
else
#endif
if (Version>=120)
extGlBlendEquation(GL_MIN);
#endif
break;
case EBO_MAX_FACTOR:
#if defined(GL_AMD_blend_minmax_factor)
if (FeatureAvailable[IRR_AMD_blend_minmax_factor])
extGlBlendEquation(GL_FACTOR_MAX_AMD);
#endif
// fallback in case of missing extension
#if defined(GL_VERSION_1_2)
#if defined(GL_AMD_blend_minmax_factor)
else
#endif
if (Version>=120)
extGlBlendEquation(GL_MAX);
#endif
break;
case EBO_MIN_ALPHA:
#if defined(GL_SGIX_blend_alpha_minmax)
if (FeatureAvailable[IRR_SGIX_blend_alpha_minmax])
extGlBlendEquation(GL_ALPHA_MIN_SGIX);
// fallback in case of missing extension
else
if (FeatureAvailable[IRR_EXT_blend_minmax])
extGlBlendEquation(GL_MIN_EXT);
#endif
break;
case EBO_MAX_ALPHA:
#if defined(GL_SGIX_blend_alpha_minmax)
if (FeatureAvailable[IRR_SGIX_blend_alpha_minmax])
extGlBlendEquation(GL_ALPHA_MAX_SGIX);
// fallback in case of missing extension
else
if (FeatureAvailable[IRR_EXT_blend_minmax])
extGlBlendEquation(GL_MAX_EXT);
#endif
break;
default:
#if defined(GL_EXT_blend_subtract) || defined(GL_EXT_blend_minmax) || defined(GL_EXT_blend_logic_op)
extGlBlendEquation(GL_FUNC_ADD_EXT);
#elif defined(GL_VERSION_1_2)
extGlBlendEquation(GL_FUNC_ADD);
#endif
break;
}
#endif
}
}
// Polygon Offset
if (queryFeature(EVDF_POLYGON_OFFSET) && (resetAllRenderStates ||
lastmaterial.PolygonOffsetDirection != material.PolygonOffsetDirection ||
lastmaterial.PolygonOffsetFactor != material.PolygonOffsetFactor))
{
glDisable(lastmaterial.Wireframe?GL_POLYGON_OFFSET_LINE:lastmaterial.PointCloud?GL_POLYGON_OFFSET_POINT:GL_POLYGON_OFFSET_FILL);
if (material.PolygonOffsetFactor)
{
glDisable(material.Wireframe?GL_POLYGON_OFFSET_LINE:material.PointCloud?GL_POLYGON_OFFSET_POINT:GL_POLYGON_OFFSET_FILL);
glEnable(material.Wireframe?GL_POLYGON_OFFSET_LINE:material.PointCloud?GL_POLYGON_OFFSET_POINT:GL_POLYGON_OFFSET_FILL);
}
if (material.PolygonOffsetDirection==EPO_BACK)
glPolygonOffset(1.0f, (GLfloat)material.PolygonOffsetFactor);
else
glPolygonOffset(-1.0f, (GLfloat)-material.PolygonOffsetFactor);
}
// thickness
if (resetAllRenderStates || lastmaterial.Thickness != material.Thickness)
{
if (AntiAlias)
{
// glPointSize(core::clamp(static_cast<GLfloat>(material.Thickness), DimSmoothedPoint[0], DimSmoothedPoint[1]));
// we don't use point smoothing
glPointSize(core::clamp(static_cast<GLfloat>(material.Thickness), DimAliasedPoint[0], DimAliasedPoint[1]));
glLineWidth(core::clamp(static_cast<GLfloat>(material.Thickness), DimSmoothedLine[0], DimSmoothedLine[1]));
}
else
{
glPointSize(core::clamp(static_cast<GLfloat>(material.Thickness), DimAliasedPoint[0], DimAliasedPoint[1]));
glLineWidth(core::clamp(static_cast<GLfloat>(material.Thickness), DimAliasedLine[0], DimAliasedLine[1]));
}
}
// Anti aliasing
if (resetAllRenderStates || lastmaterial.AntiAliasing != material.AntiAliasing)
{
if (FeatureAvailable[IRR_ARB_multisample])
{
if (material.AntiAliasing & EAAM_ALPHA_TO_COVERAGE)
glEnable(GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
else if (lastmaterial.AntiAliasing & EAAM_ALPHA_TO_COVERAGE)
glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
if ((AntiAlias >= 2) && (material.AntiAliasing & (EAAM_SIMPLE|EAAM_QUALITY)))
{
glEnable(GL_MULTISAMPLE_ARB);
#ifdef GL_NV_multisample_filter_hint
if (FeatureAvailable[IRR_NV_multisample_filter_hint])
{
if ((material.AntiAliasing & EAAM_QUALITY) == EAAM_QUALITY)
glHint(GL_MULTISAMPLE_FILTER_HINT_NV, GL_NICEST);
else
glHint(GL_MULTISAMPLE_FILTER_HINT_NV, GL_NICEST);
}
#endif
}
else
glDisable(GL_MULTISAMPLE_ARB);
}
if ((material.AntiAliasing & EAAM_LINE_SMOOTH) != (lastmaterial.AntiAliasing & EAAM_LINE_SMOOTH))
{
if (material.AntiAliasing & EAAM_LINE_SMOOTH)
glEnable(GL_LINE_SMOOTH);
else if (lastmaterial.AntiAliasing & EAAM_LINE_SMOOTH)
glDisable(GL_LINE_SMOOTH);
}
if ((material.AntiAliasing & EAAM_POINT_SMOOTH) != (lastmaterial.AntiAliasing & EAAM_POINT_SMOOTH))
{
if (material.AntiAliasing & EAAM_POINT_SMOOTH)
// often in software, and thus very slow
glEnable(GL_POINT_SMOOTH);
else if (lastmaterial.AntiAliasing & EAAM_POINT_SMOOTH)
glDisable(GL_POINT_SMOOTH);
}
}
setWrapMode(material);
// be sure to leave in texture stage 0
if (MultiTextureExtension)
extGlActiveTexture(GL_TEXTURE0_ARB);
}
//! Enable the 2d override material
void COpenGLDriver::enableMaterial2D(bool enable)
{
if (!enable)
CurrentRenderMode = ERM_NONE;
CNullDriver::enableMaterial2D(enable);
}
//! sets the needed renderstates
void COpenGLDriver::setRenderStates2DMode(bool alpha, bool texture, bool alphaChannel)
{
if (CurrentRenderMode != ERM_2D || Transformation3DChanged)
{
// unset last 3d material
if (CurrentRenderMode == ERM_3D)
{
if (static_cast<u32>(LastMaterial.MaterialType) < MaterialRenderers.size())
MaterialRenderers[LastMaterial.MaterialType].Renderer->OnUnsetMaterial();
}
if (Transformation3DChanged)
{
glMatrixMode(GL_PROJECTION);
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
core::matrix4 m(core::matrix4::EM4CONST_NOTHING);
m.buildProjectionMatrixOrthoLH(f32(renderTargetSize.Width), f32(-(s32)(renderTargetSize.Height)), -1.0f, 1.0f);
m.setTranslation(core::vector3df(-1,1,0));
glLoadMatrixf(m.pointer());
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.375f, 0.375f, 0.0f);
// Make sure we set first texture matrix
if (MultiTextureExtension)
extGlActiveTexture(GL_TEXTURE0_ARB);
Transformation3DChanged = false;
}
if (!OverrideMaterial2DEnabled)
{
setBasicRenderStates(InitMaterial2D, LastMaterial, true);
LastMaterial = InitMaterial2D;
}
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
#ifdef GL_EXT_clip_volume_hint
// if (FeatureAvailable[IRR_EXT_clip_volume_hint])
// glHint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT, GL_FASTEST);
#endif
}
if (OverrideMaterial2DEnabled)
{
OverrideMaterial2D.Lighting=false;
setBasicRenderStates(OverrideMaterial2D, LastMaterial, false);
LastMaterial = OverrideMaterial2D;
}
// no alphaChannel without texture
alphaChannel &= texture;
if (alphaChannel || alpha)
{
glEnable(GL_BLEND);
glEnable(GL_ALPHA_TEST);
glAlphaFunc(GL_GREATER, 0.f);
}
else
{
glDisable(GL_BLEND);
glDisable(GL_ALPHA_TEST);
}
if (texture)
{
if (!OverrideMaterial2DEnabled)
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
}
Material.setTexture(0, const_cast<video::ITexture*>(CurrentTexture[0]));
setTransform(ETS_TEXTURE_0, core::IdentityMatrix);
// Due to the transformation change, the previous line would call a reset each frame
// but we can safely reset the variable as it was false before
Transformation3DChanged=false;
if (alphaChannel)
{
// if alpha and alpha texture just modulate, otherwise use only the alpha channel
if (alpha)
{
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
}
else
{
#if defined(GL_ARB_texture_env_combine) || defined(GL_EXT_texture_env_combine)
if (FeatureAvailable[IRR_ARB_texture_env_combine]||FeatureAvailable[IRR_EXT_texture_env_combine])
{
#ifdef GL_ARB_texture_env_combine
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);
// rgb always modulates
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PRIMARY_COLOR_ARB);
#else
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_EXT, GL_REPLACE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_EXT, GL_TEXTURE);
// rgb always modulates
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT, GL_TEXTURE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT, GL_PRIMARY_COLOR_EXT);
#endif
}
else
#endif
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
}
}
else
{
if (alpha)
{
#if defined(GL_ARB_texture_env_combine) || defined(GL_EXT_texture_env_combine)
if (FeatureAvailable[IRR_ARB_texture_env_combine]||FeatureAvailable[IRR_EXT_texture_env_combine])
{
#ifdef GL_ARB_texture_env_combine
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PRIMARY_COLOR_ARB);
// rgb always modulates
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PRIMARY_COLOR_ARB);
#else
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_EXT, GL_REPLACE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_EXT, GL_PRIMARY_COLOR_EXT);
// rgb always modulates
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT, GL_TEXTURE);
glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT, GL_PRIMARY_COLOR_EXT);
#endif
}
else
#endif
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
}
else
{
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
}
}
}
CurrentRenderMode = ERM_2D;
}
//! \return Returns the name of the video driver.
const wchar_t* COpenGLDriver::getName() const
{
return Name.c_str();
}
//! deletes all dynamic lights there are
void COpenGLDriver::deleteAllDynamicLights()
{
if (!useCoreContext)
{
for (s32 i=0; i<MaxLights; ++i)
glDisable(GL_LIGHT0 + i);
}
RequestedLights.clear();
CNullDriver::deleteAllDynamicLights();
}
//! adds a dynamic light
s32 COpenGLDriver::addDynamicLight(const SLight& light)
{
CNullDriver::addDynamicLight(light);
RequestedLights.push_back(RequestedLight(light));
u32 newLightIndex = RequestedLights.size() - 1;
// Try and assign a hardware light just now, but don't worry if I can't
assignHardwareLight(newLightIndex);
return (s32)newLightIndex;
}
void COpenGLDriver::assignHardwareLight(u32 lightIndex)
{
setTransform(ETS_WORLD, core::matrix4());
s32 lidx;
for (lidx=GL_LIGHT0; lidx < GL_LIGHT0 + MaxLights; ++lidx)
{
if(!glIsEnabled(lidx))
{
RequestedLights[lightIndex].HardwareLightIndex = lidx;
break;
}
}
if(lidx == GL_LIGHT0 + MaxLights) // There's no room for it just now
return;
GLfloat data[4];
const SLight & light = RequestedLights[lightIndex].LightData;
switch (light.Type)
{
case video::ELT_SPOT:
data[0] = light.Direction.X;
data[1] = light.Direction.Y;
data[2] = light.Direction.Z;
data[3] = 0.0f;
glLightfv(lidx, GL_SPOT_DIRECTION, data);
// set position
data[0] = light.Position.X;
data[1] = light.Position.Y;
data[2] = light.Position.Z;
data[3] = 1.0f; // 1.0f for positional light
glLightfv(lidx, GL_POSITION, data);
glLightf(lidx, GL_SPOT_EXPONENT, light.Falloff);
glLightf(lidx, GL_SPOT_CUTOFF, light.OuterCone);
break;
case video::ELT_POINT:
// set position
data[0] = light.Position.X;
data[1] = light.Position.Y;
data[2] = light.Position.Z;
data[3] = 1.0f; // 1.0f for positional light
glLightfv(lidx, GL_POSITION, data);
glLightf(lidx, GL_SPOT_EXPONENT, 0.0f);
glLightf(lidx, GL_SPOT_CUTOFF, 180.0f);
break;
case video::ELT_DIRECTIONAL:
// set direction
data[0] = -light.Direction.X;
data[1] = -light.Direction.Y;
data[2] = -light.Direction.Z;
data[3] = 0.0f; // 0.0f for directional light
glLightfv(lidx, GL_POSITION, data);
glLightf(lidx, GL_SPOT_EXPONENT, 0.0f);
glLightf(lidx, GL_SPOT_CUTOFF, 180.0f);
break;
default:
break;
}
// set diffuse color
data[0] = light.DiffuseColor.r;
data[1] = light.DiffuseColor.g;
data[2] = light.DiffuseColor.b;
data[3] = light.DiffuseColor.a;
glLightfv(lidx, GL_DIFFUSE, data);
// set specular color
data[0] = light.SpecularColor.r;
data[1] = light.SpecularColor.g;
data[2] = light.SpecularColor.b;
data[3] = light.SpecularColor.a;
glLightfv(lidx, GL_SPECULAR, data);
// set ambient color
data[0] = light.AmbientColor.r;
data[1] = light.AmbientColor.g;
data[2] = light.AmbientColor.b;
data[3] = light.AmbientColor.a;
glLightfv(lidx, GL_AMBIENT, data);
// 1.0f / (constant + linear * d + quadratic*(d*d);
// set attenuation
glLightf(lidx, GL_CONSTANT_ATTENUATION, light.Attenuation.X);
glLightf(lidx, GL_LINEAR_ATTENUATION, light.Attenuation.Y);
glLightf(lidx, GL_QUADRATIC_ATTENUATION, light.Attenuation.Z);
glEnable(lidx);
}
//! Turns a dynamic light on or off
//! \param lightIndex: the index returned by addDynamicLight
//! \param turnOn: true to turn the light on, false to turn it off
void COpenGLDriver::turnLightOn(s32 lightIndex, bool turnOn)
{
if(lightIndex < 0 || lightIndex >= (s32)RequestedLights.size())
return;
RequestedLight & requestedLight = RequestedLights[lightIndex];
requestedLight.DesireToBeOn = turnOn;
if(turnOn)
{
if(-1 == requestedLight.HardwareLightIndex)
assignHardwareLight(lightIndex);
}
else
{
if(-1 != requestedLight.HardwareLightIndex)
{
// It's currently assigned, so free up the hardware light
glDisable(requestedLight.HardwareLightIndex);
requestedLight.HardwareLightIndex = -1;
// Now let the first light that's waiting on a free hardware light grab it
for(u32 requested = 0; requested < RequestedLights.size(); ++requested)
if(RequestedLights[requested].DesireToBeOn
&&
-1 == RequestedLights[requested].HardwareLightIndex)
{
assignHardwareLight(requested);
break;
}
}
}
}
//! returns the maximal amount of dynamic lights the device can handle
u32 COpenGLDriver::getMaximalDynamicLightAmount() const
{
return MaxLights;
}
//! Sets the dynamic ambient light color. The default color is
//! (0,0,0,0) which means it is dark.
//! \param color: New color of the ambient light.
void COpenGLDriver::setAmbientLight(const SColorf& color)
{
GLfloat data[4] = {color.r, color.g, color.b, color.a};
if (!useCoreContext)
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, data);
}
// this code was sent in by Oliver Klems, thank you! (I modified the glViewport
// method just a bit.
void COpenGLDriver::setViewPort(const core::rect<s32>& area)
{
if (area == ViewPort)
return;
core::rect<s32> vp = area;
core::rect<s32> rendert(0,0, getCurrentRenderTargetSize().Width, getCurrentRenderTargetSize().Height);
vp.clipAgainst(rendert);
if (vp.getHeight()>0 && vp.getWidth()>0)
{
glViewport(vp.UpperLeftCorner.X,
getCurrentRenderTargetSize().Height - vp.UpperLeftCorner.Y - vp.getHeight(),
vp.getWidth(), vp.getHeight());
ViewPort = vp;
}
}
//! Draws a shadow volume into the stencil buffer. To draw a stencil shadow, do
//! this: First, draw all geometry. Then use this method, to draw the shadow
//! volume. Next use IVideoDriver::drawStencilShadow() to visualize the shadow.
void COpenGLDriver::drawStencilShadowVolume(const core::array<core::vector3df>& triangles, bool zfail, u32 debugDataVisible)
{
const u32 count=triangles.size();
if (!StencilBuffer || !count)
return;
// unset last 3d material
if (CurrentRenderMode == ERM_3D &&
static_cast<u32>(Material.MaterialType) < MaterialRenderers.size())
{
MaterialRenderers[Material.MaterialType].Renderer->OnUnsetMaterial();
ResetRenderStates = true;
}
// store current OpenGL state
glPushAttrib(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_ENABLE_BIT |
GL_POLYGON_BIT | GL_STENCIL_BUFFER_BIT);
glDisable(GL_LIGHTING);
glDisable(GL_FOG);
glDepthFunc(GL_LESS);
glDepthMask(GL_FALSE); // no depth buffer writing
if (debugDataVisible & scene::EDS_MESH_WIRE_OVERLAY)
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
if (!(debugDataVisible & (scene::EDS_SKELETON|scene::EDS_MESH_WIRE_OVERLAY)))
{
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); // no color buffer drawing
glEnable(GL_STENCIL_TEST);
}
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3,GL_FLOAT,sizeof(core::vector3df),triangles.const_pointer());
glStencilMask(~0);
glStencilFunc(GL_ALWAYS, 0, ~0);
GLenum incr = GL_INCR;
GLenum decr = GL_DECR;
#ifdef GL_EXT_stencil_wrap
if (FeatureAvailable[IRR_EXT_stencil_wrap])
{
incr = GL_INCR_WRAP_EXT;
decr = GL_DECR_WRAP_EXT;
}
#endif
#ifdef GL_NV_depth_clamp
if (FeatureAvailable[IRR_NV_depth_clamp])
glEnable(GL_DEPTH_CLAMP_NV);
#endif
// The first parts are not correctly working, yet.
#if 0
#ifdef GL_EXT_stencil_two_side
if (FeatureAvailable[IRR_EXT_stencil_two_side])
{
glEnable(GL_STENCIL_TEST_TWO_SIDE_EXT);
glDisable(GL_CULL_FACE);
if (zfail)
{
extGlActiveStencilFace(GL_BACK);
glStencilOp(GL_KEEP, incr, GL_KEEP);
glStencilMask(~0);
glStencilFunc(GL_ALWAYS, 0, ~0);
extGlActiveStencilFace(GL_FRONT);
glStencilOp(GL_KEEP, decr, GL_KEEP);
}
else // zpass
{
extGlActiveStencilFace(GL_BACK);
glStencilOp(GL_KEEP, GL_KEEP, decr);
glStencilMask(~0);
glStencilFunc(GL_ALWAYS, 0, ~0);
extGlActiveStencilFace(GL_FRONT);
glStencilOp(GL_KEEP, GL_KEEP, incr);
}
glStencilMask(~0);
glStencilFunc(GL_ALWAYS, 0, ~0);
glDrawArrays(GL_TRIANGLES,0,count);
glDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);
}
else
#endif
if (FeatureAvailable[IRR_ATI_separate_stencil])
{
glDisable(GL_CULL_FACE);
if (zfail)
{
extGlStencilOpSeparate(GL_BACK, GL_KEEP, incr, GL_KEEP);
extGlStencilOpSeparate(GL_FRONT, GL_KEEP, decr, GL_KEEP);
}
else // zpass
{
extGlStencilOpSeparate(GL_BACK, GL_KEEP, GL_KEEP, decr);
extGlStencilOpSeparate(GL_FRONT, GL_KEEP, GL_KEEP, incr);
}
extGlStencilFuncSeparate(GL_ALWAYS, GL_ALWAYS, 0, ~0);
glStencilMask(~0);
glDrawArrays(GL_TRIANGLES,0,count);
}
else
#endif
{
glEnable(GL_CULL_FACE);
if (zfail)
{
glCullFace(GL_FRONT);
glStencilOp(GL_KEEP, incr, GL_KEEP);
glDrawArrays(GL_TRIANGLES,0,count);
glCullFace(GL_BACK);
glStencilOp(GL_KEEP, decr, GL_KEEP);
glDrawArrays(GL_TRIANGLES,0,count);
}
else // zpass
{
glCullFace(GL_BACK);
glStencilOp(GL_KEEP, GL_KEEP, incr);
glDrawArrays(GL_TRIANGLES,0,count);
glCullFace(GL_FRONT);
glStencilOp(GL_KEEP, GL_KEEP, decr);
glDrawArrays(GL_TRIANGLES,0,count);
}
}
#ifdef GL_NV_depth_clamp
if (FeatureAvailable[IRR_NV_depth_clamp])
glDisable(GL_DEPTH_CLAMP_NV);
#endif
glDisable(GL_POLYGON_OFFSET_FILL);
glDisableClientState(GL_VERTEX_ARRAY); //not stored on stack
glPopAttrib();
}
//! Fills the stencil shadow with color. After the shadow volume has been drawn
//! into the stencil buffer using IVideoDriver::drawStencilShadowVolume(), use this
//! to draw the color of the shadow.
void COpenGLDriver::drawStencilShadow(bool clearStencilBuffer, video::SColor leftUpEdge,
video::SColor rightUpEdge, video::SColor leftDownEdge, video::SColor rightDownEdge)
{
if (!StencilBuffer)
return;
disableTextures();
// store attributes
glPushAttrib(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_ENABLE_BIT | GL_POLYGON_BIT | GL_STENCIL_BUFFER_BIT | GL_LIGHTING_BIT);
glDisable(GL_LIGHTING);
glDisable(GL_FOG);
glDepthMask(GL_FALSE);
glShadeModel(GL_FLAT);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_STENCIL_TEST);
glStencilFunc(GL_NOTEQUAL, 0, ~0);
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
// draw a shadow rectangle covering the entire screen using stencil buffer
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glBegin(GL_QUADS);
glColor4ub(leftDownEdge.getRed(), leftDownEdge.getGreen(), leftDownEdge.getBlue(), leftDownEdge.getAlpha());
glVertex3f(-1.f,-1.f,-0.9f);
glColor4ub(leftUpEdge.getRed(), leftUpEdge.getGreen(), leftUpEdge.getBlue(), leftUpEdge.getAlpha());
glVertex3f(-1.f, 1.f,-0.9f);
glColor4ub(rightUpEdge.getRed(), rightUpEdge.getGreen(), rightUpEdge.getBlue(), rightUpEdge.getAlpha());
glVertex3f(1.f, 1.f,-0.9f);
glColor4ub(rightDownEdge.getRed(), rightDownEdge.getGreen(), rightDownEdge.getBlue(), rightDownEdge.getAlpha());
glVertex3f(1.f,-1.f,-0.9f);
glEnd();
clearBuffers(false, false, clearStencilBuffer, 0x0);
// restore settings
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glPopAttrib();
}
//! Sets the fog mode.
void COpenGLDriver::setFog(SColor c, E_FOG_TYPE fogType, f32 start,
f32 end, f32 density, bool pixelFog, bool rangeFog)
{
CNullDriver::setFog(c, fogType, start, end, density, pixelFog, rangeFog);
if (!useCoreContext)
glFogf(GL_FOG_MODE, GLfloat((fogType==EFT_FOG_LINEAR)? GL_LINEAR : (fogType==EFT_FOG_EXP)?GL_EXP:GL_EXP2));
#ifdef GL_EXT_fog_coord
if (FeatureAvailable[IRR_EXT_fog_coord] && !useCoreContext)
glFogi(GL_FOG_COORDINATE_SOURCE, GL_FRAGMENT_DEPTH);
#endif
#ifdef GL_NV_fog_distance
if (FeatureAvailable[IRR_NV_fog_distance])
{
if (rangeFog && !useCoreContext)
glFogi(GL_FOG_DISTANCE_MODE_NV, GL_EYE_RADIAL_NV);
else if (!useCoreContext)
glFogi(GL_FOG_DISTANCE_MODE_NV, GL_EYE_PLANE_ABSOLUTE_NV);
}
#endif
if (fogType==EFT_FOG_LINEAR)
{
if (!useCoreContext)
glFogf(GL_FOG_START, start);
if (!useCoreContext)
glFogf(GL_FOG_END, end);
}
else if (!useCoreContext)
glFogf(GL_FOG_DENSITY, density);
if (pixelFog && !useCoreContext)
glHint(GL_FOG_HINT, GL_NICEST);
else if (!useCoreContext)
glHint(GL_FOG_HINT, GL_FASTEST);
SColorf color(c);
GLfloat data[4] = {color.r, color.g, color.b, color.a};
if (!useCoreContext)
glFogfv(GL_FOG_COLOR, data);
}
//! Draws a 3d line.
void COpenGLDriver::draw3DLine(const core::vector3df& start,
const core::vector3df& end, SColor color)
{
setRenderStates3DMode();
glBegin(GL_LINES);
glColor4ub(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha());
glVertex3f(start.X, start.Y, start.Z);
glVertex3f(end.X, end.Y, end.Z);
glEnd();
}
//! Removes a texture from the texture cache and deletes it, freeing lot of memory.
void COpenGLDriver::removeTexture(ITexture* texture)
{
if (!texture)
return;
CNullDriver::removeTexture(texture);
// Remove this texture from CurrentTexture as well
CurrentTexture.remove(texture);
}
//! Only used by the internal engine. Used to notify the driver that
//! the window was resized.
void COpenGLDriver::OnResize(const core::dimension2d<u32>& size)
{
CNullDriver::OnResize(size);
glViewport(0, 0, size.Width, size.Height);
Transformation3DChanged = true;
}
//! Returns type of video driver
E_DRIVER_TYPE COpenGLDriver::getDriverType() const
{
return EDT_OPENGL;
}
//! returns color format
ECOLOR_FORMAT COpenGLDriver::getColorFormat() const
{
return ColorFormat;
}
//! Sets a vertex shader constant.
void COpenGLDriver::setVertexShaderConstant(const f32* data, s32 startRegister, s32 constantAmount)
{
#ifdef GL_ARB_vertex_program
for (s32 i=0; i<constantAmount; ++i)
extGlProgramLocalParameter4fv(GL_VERTEX_PROGRAM_ARB, startRegister+i, &data[i*4]);
#endif
}
//! Sets a pixel shader constant.
void COpenGLDriver::setPixelShaderConstant(const f32* data, s32 startRegister, s32 constantAmount)
{
#ifdef GL_ARB_fragment_program
for (s32 i=0; i<constantAmount; ++i)
extGlProgramLocalParameter4fv(GL_FRAGMENT_PROGRAM_ARB, startRegister+i, &data[i*4]);
#endif
}
//! Sets a constant for the vertex shader based on a name.
bool COpenGLDriver::setVertexShaderConstant(const c8* name, const f32* floats, int count)
{
//pass this along, as in GLSL the same routine is used for both vertex and fragment shaders
return setPixelShaderConstant(name, floats, count);
}
//! Bool interface for the above.
bool COpenGLDriver::setVertexShaderConstant(const c8* name, const bool* bools, int count)
{
return setPixelShaderConstant(name, bools, count);
}
//! Int interface for the above.
bool COpenGLDriver::setVertexShaderConstant(const c8* name, const s32* ints, int count)
{
return setPixelShaderConstant(name, ints, count);
}
//! Sets a constant for the pixel shader based on a name.
bool COpenGLDriver::setPixelShaderConstant(const c8* name, const f32* floats, int count)
{
os::Printer::log("Error: Please call services->setPixelShaderConstant(), not VideoDriver->setPixelShaderConstant().");
return false;
}
//! Bool interface for the above.
bool COpenGLDriver::setPixelShaderConstant(const c8* name, const bool* bools, int count)
{
os::Printer::log("Error: Please call services->setPixelShaderConstant(), not VideoDriver->setPixelShaderConstant().");
return false;
}
//! Int interface for the above.
bool COpenGLDriver::setPixelShaderConstant(const c8* name, const s32* ints, int count)
{
os::Printer::log("Error: Please call services->setPixelShaderConstant(), not VideoDriver->setPixelShaderConstant().");
return false;
}
//! Adds a new material renderer to the VideoDriver, using pixel and/or
//! vertex shaders to render geometry.
s32 COpenGLDriver::addShaderMaterial(const c8* vertexShaderProgram,
const c8* pixelShaderProgram,
IShaderConstantSetCallBack* callback,
E_MATERIAL_TYPE baseMaterial, s32 userData)
{
s32 nr = -1;
COpenGLShaderMaterialRenderer* r = new COpenGLShaderMaterialRenderer(
this, nr, vertexShaderProgram, pixelShaderProgram,
callback, getMaterialRenderer(baseMaterial), userData);
r->drop();
return nr;
}
//! Adds a new material renderer to the VideoDriver, using GLSL to render geometry.
s32 COpenGLDriver::addHighLevelShaderMaterial(
const c8* vertexShaderProgram,
const c8* vertexShaderEntryPointName,
E_VERTEX_SHADER_TYPE vsCompileTarget,
const c8* pixelShaderProgram,
const c8* pixelShaderEntryPointName,
E_PIXEL_SHADER_TYPE psCompileTarget,
const c8* geometryShaderProgram,
const c8* geometryShaderEntryPointName,
E_GEOMETRY_SHADER_TYPE gsCompileTarget,
scene::E_PRIMITIVE_TYPE inType,
scene::E_PRIMITIVE_TYPE outType,
u32 verticesOut,
IShaderConstantSetCallBack* callback,
E_MATERIAL_TYPE baseMaterial,
s32 userData, E_GPU_SHADING_LANGUAGE shadingLang)
{
s32 nr = -1;
{
COpenGLSLMaterialRenderer* r = new COpenGLSLMaterialRenderer(
this, nr,
vertexShaderProgram, vertexShaderEntryPointName, vsCompileTarget,
pixelShaderProgram, pixelShaderEntryPointName, psCompileTarget,
geometryShaderProgram, geometryShaderEntryPointName, gsCompileTarget,
inType, outType, verticesOut,
callback,getMaterialRenderer(baseMaterial), userData);
r->drop();
}
return nr;
}
//! Returns a pointer to the IVideoDriver interface. (Implementation for
//! IMaterialRendererServices)
IVideoDriver* COpenGLDriver::getVideoDriver()
{
return this;
}
ITexture* COpenGLDriver::addRenderTargetTexture(const core::dimension2d<u32>& size,
const io::path& name,
const ECOLOR_FORMAT format,
const bool useStencil)
{
//disable mip-mapping
bool generateMipLevels = getTextureCreationFlag(ETCF_CREATE_MIP_MAPS);
setTextureCreationFlag(ETCF_CREATE_MIP_MAPS, false);
video::ITexture* rtt = 0;
#if defined(GL_EXT_framebuffer_object)
// if driver supports FrameBufferObjects, use them
if (queryFeature(EVDF_FRAMEBUFFER_OBJECT))
{
rtt = new COpenGLFBOTexture(size, name, this, format);
if (rtt)
{
bool success = false;
addTexture(rtt);
ITexture* tex = createDepthTexture(rtt, useStencil);
if (tex)
{
success = static_cast<video::COpenGLFBODepthTexture*>(tex)->attach(rtt);
if ( !success )
{
removeDepthTexture(tex);
}
tex->drop();
}
rtt->drop();
if (!success)
{
removeTexture(rtt);
rtt=0;
}
}
}
else
#endif
{
// the simple texture is only possible for size <= screensize
// we try to find an optimal size with the original constraints
core::dimension2du destSize(core::min_(size.Width,ScreenSize.Width), core::min_(size.Height,ScreenSize.Height));
destSize = destSize.getOptimalSize((size==size.getOptimalSize()), false, false);
rtt = addTexture(destSize, name, ECF_A8R8G8B8);
if (rtt)
{
static_cast<video::COpenGLTexture*>(rtt)->setIsRenderTarget(true);
}
}
//restore mip-mapping
setTextureCreationFlag(ETCF_CREATE_MIP_MAPS, generateMipLevels);
return rtt;
}
//! Returns the maximum amount of primitives (mostly vertices) which
//! the device is able to render with one drawIndexedTriangleList
//! call.
u32 COpenGLDriver::getMaximalPrimitiveCount() const
{
return 0x7fffffff;
}
//! set or reset render target
bool COpenGLDriver::setRenderTarget(video::E_RENDER_TARGET target, bool clearTarget,
bool clearZBuffer, SColor color)
{
if (target != CurrentTarget)
setRenderTarget(0, false, false, 0x0);
if (ERT_RENDER_TEXTURE == target)
{
os::Printer::log("For render textures call setRenderTarget with the actual texture as first parameter.", ELL_ERROR);
return false;
}
if (ERT_MULTI_RENDER_TEXTURES == target)
{
os::Printer::log("For multiple render textures call setRenderTarget with the texture array as first parameter.", ELL_ERROR);
return false;
}
if (Params.Stereobuffer && (ERT_STEREO_RIGHT_BUFFER == target))
{
if (Params.Doublebuffer)
glDrawBuffer(GL_BACK_RIGHT);
else
glDrawBuffer(GL_FRONT_RIGHT);
}
else if (Params.Stereobuffer && ERT_STEREO_BOTH_BUFFERS == target)
{
if (Params.Doublebuffer)
glDrawBuffer(GL_BACK);
else
glDrawBuffer(GL_FRONT);
}
else if ((target >= ERT_AUX_BUFFER0) && (target-ERT_AUX_BUFFER0 < MaxAuxBuffers))
{
glDrawBuffer(GL_AUX0+target-ERT_AUX_BUFFER0);
}
else
{
if (Params.Doublebuffer)
glDrawBuffer(GL_BACK_LEFT);
else
glDrawBuffer(GL_FRONT_LEFT);
// exit with false, but also with working color buffer
if (target != ERT_FRAME_BUFFER)
return false;
}
CurrentTarget=target;
clearBuffers(clearTarget, clearZBuffer, false, color);
return true;
}
//! set or reset render target
bool COpenGLDriver::setRenderTarget(video::ITexture* texture, bool clearBackBuffer,
bool clearZBuffer, SColor color)
{
// check for right driver type
if (texture && texture->getDriverType() != EDT_OPENGL)
{
os::Printer::log("Fatal Error: Tried to set a texture not owned by this driver.", ELL_ERROR);
return false;
}
#if defined(GL_EXT_framebuffer_object)
if (CurrentTarget==ERT_MULTI_RENDER_TEXTURES)
{
for (u32 i=0; i<MRTargets.size(); ++i)
{
if (MRTargets[i].TargetType==ERT_RENDER_TEXTURE)
{
for (++i; i<MRTargets.size(); ++i)
if (MRTargets[i].TargetType==ERT_RENDER_TEXTURE)
extGlFramebufferTexture2D(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT+i, GL_TEXTURE_2D, 0, 0);
}
}
MRTargets.clear();
}
#endif
// check if we should set the previous RT back
if ((RenderTargetTexture != texture) ||
(CurrentTarget==ERT_MULTI_RENDER_TEXTURES))
{
setActiveTexture(0, 0);
ResetRenderStates=true;
if (RenderTargetTexture!=0)
{
RenderTargetTexture->unbindRTT();
}
if (texture)
{
// we want to set a new target. so do this.
glViewport(0, 0, texture->getSize().Width, texture->getSize().Height);
RenderTargetTexture = static_cast<COpenGLTexture*>(texture);
// calls glDrawBuffer as well
RenderTargetTexture->bindRTT();
CurrentRendertargetSize = texture->getSize();
CurrentTarget=ERT_RENDER_TEXTURE;
}
else
{
glViewport(0,0,ScreenSize.Width,ScreenSize.Height);
RenderTargetTexture = 0;
CurrentRendertargetSize = core::dimension2d<u32>(0,0);
CurrentTarget=ERT_FRAME_BUFFER;
glDrawBuffer(Params.Doublebuffer?GL_BACK_LEFT:GL_FRONT_LEFT);
}
// we need to update the matrices due to the rendersize change.
Transformation3DChanged=true;
}
clearBuffers(clearBackBuffer, clearZBuffer, false, color);
return true;
}
//! Sets multiple render targets
bool COpenGLDriver::setRenderTarget(const core::array<video::IRenderTarget>& targets,
bool clearBackBuffer, bool clearZBuffer, SColor color)
{
// if simply disabling the MRT via array call
if (targets.size()==0)
return setRenderTarget(0, clearBackBuffer, clearZBuffer, color);
// if disabling old MRT, but enabling new one as well
if ((MRTargets.size()!=0) && (targets != MRTargets))
setRenderTarget(0, clearBackBuffer, clearZBuffer, color);
// if no change, simply clear buffers
else if (targets == MRTargets)
{
clearBuffers(clearBackBuffer, clearZBuffer, false, color);
return true;
}
// copy to storage for correct disabling
MRTargets=targets;
u32 maxMultipleRTTs = core::min_(static_cast<u32>(MaxMultipleRenderTargets), targets.size());
// determine common size
core::dimension2du rttSize = CurrentRendertargetSize;
if (targets[0].TargetType==ERT_RENDER_TEXTURE)
{
if (!targets[0].RenderTexture)
{
os::Printer::log("Missing render texture for MRT.", ELL_ERROR);
return false;
}
rttSize=targets[0].RenderTexture->getSize();
}
for (u32 i = 0; i < maxMultipleRTTs; ++i)
{
// check for right driver type
if (targets[i].TargetType==ERT_RENDER_TEXTURE)
{
if (!targets[i].RenderTexture)
{
maxMultipleRTTs=i;
os::Printer::log("Missing render texture for MRT.", ELL_WARNING);
break;
}
if (targets[i].RenderTexture->getDriverType() != EDT_OPENGL)
{
maxMultipleRTTs=i;
os::Printer::log("Tried to set a texture not owned by this driver.", ELL_WARNING);
break;
}
// check for valid render target
if (!targets[i].RenderTexture->isRenderTarget() || !static_cast<COpenGLTexture*>(targets[i].RenderTexture)->isFrameBufferObject())
{
maxMultipleRTTs=i;
os::Printer::log("Tried to set a non FBO-RTT as render target.", ELL_WARNING);
break;
}
// check for valid size
if (rttSize != targets[i].RenderTexture->getSize())
{
maxMultipleRTTs=i;
os::Printer::log("Render target texture has wrong size.", ELL_WARNING);
break;
}
}
}
if (maxMultipleRTTs==0)
{
os::Printer::log("No valid MRTs.", ELL_ERROR);
return false;
}
// init FBO, if any
for (u32 i=0; i<maxMultipleRTTs; ++i)
{
if (targets[i].TargetType==ERT_RENDER_TEXTURE)
{
setRenderTarget(targets[i].RenderTexture, false, false, 0x0);
break; // bind only first RTT
}
}
// init other main buffer, if necessary
if (targets[0].TargetType!=ERT_RENDER_TEXTURE)
setRenderTarget(targets[0].TargetType, false, false, 0x0);
// attach other textures and store buffers into array
if (maxMultipleRTTs > 1)
{
CurrentTarget=ERT_MULTI_RENDER_TEXTURES;
core::array<GLenum> MRTs;
MRTs.set_used(maxMultipleRTTs);
for(u32 i = 0; i < maxMultipleRTTs; i++)
{
if (FeatureAvailable[IRR_EXT_draw_buffers2])
{
extGlColorMaskIndexed(i,
(targets[i].ColorMask & ECP_RED)?GL_TRUE:GL_FALSE,
(targets[i].ColorMask & ECP_GREEN)?GL_TRUE:GL_FALSE,
(targets[i].ColorMask & ECP_BLUE)?GL_TRUE:GL_FALSE,
(targets[i].ColorMask & ECP_ALPHA)?GL_TRUE:GL_FALSE);
if (targets[i].BlendOp==EBO_NONE)
extGlDisableIndexed(GL_BLEND, i);
else
extGlEnableIndexed(GL_BLEND, i);
}
#if defined(GL_AMD_draw_buffers_blend) || defined(GL_ARB_draw_buffers_blend)
if (FeatureAvailable[IRR_AMD_draw_buffers_blend] || FeatureAvailable[IRR_ARB_draw_buffers_blend])
{
extGlBlendFuncIndexed(i, getGLBlend(targets[i].BlendFuncSrc), getGLBlend(targets[i].BlendFuncDst));
switch(targets[i].BlendOp)
{
case EBO_SUBTRACT:
extGlBlendEquationIndexed(i, GL_FUNC_SUBTRACT);
break;
case EBO_REVSUBTRACT:
extGlBlendEquationIndexed(i, GL_FUNC_REVERSE_SUBTRACT);
break;
case EBO_MIN:
extGlBlendEquationIndexed(i, GL_MIN);
break;
case EBO_MAX:
extGlBlendEquationIndexed(i, GL_MAX);
break;
case EBO_MIN_FACTOR:
case EBO_MIN_ALPHA:
#if defined(GL_AMD_blend_minmax_factor)
if (FeatureAvailable[IRR_AMD_blend_minmax_factor])
extGlBlendEquationIndexed(i, GL_FACTOR_MIN_AMD);
// fallback in case of missing extension
else
#endif
extGlBlendEquation(GL_MIN);
break;
case EBO_MAX_FACTOR:
case EBO_MAX_ALPHA:
#if defined(GL_AMD_blend_minmax_factor)
if (FeatureAvailable[IRR_AMD_blend_minmax_factor])
extGlBlendEquationIndexed(i, GL_FACTOR_MAX_AMD);
// fallback in case of missing extension
else
#endif
extGlBlendEquation(GL_MAX);
break;
default:
extGlBlendEquationIndexed(i, GL_FUNC_ADD);
break;
}
}
#endif
if (targets[i].TargetType==ERT_RENDER_TEXTURE)
{
GLenum attachment = GL_NONE;
#ifdef GL_EXT_framebuffer_object
// attach texture to FrameBuffer Object on Color [i]
attachment = GL_COLOR_ATTACHMENT0_EXT+i;
if ((i != 0) && (targets[i].RenderTexture != RenderTargetTexture))
extGlFramebufferTexture2D(GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_2D, static_cast<COpenGLTexture*>(targets[i].RenderTexture)->getOpenGLTextureName(), 0);
#endif
MRTs[i]=attachment;
}
else
{
switch(targets[i].TargetType)
{
case ERT_FRAME_BUFFER:
MRTs[i]=GL_BACK_LEFT;
break;
case ERT_STEREO_BOTH_BUFFERS:
MRTs[i]=GL_BACK;
break;
case ERT_STEREO_RIGHT_BUFFER:
MRTs[i]=GL_BACK_RIGHT;
break;
case ERT_STEREO_LEFT_BUFFER:
MRTs[i]=GL_BACK_LEFT;
break;
default:
MRTs[i]=GL_AUX0+(targets[i].TargetType-ERT_AUX_BUFFER0);
break;
}
}
}
extGlDrawBuffers(maxMultipleRTTs, MRTs.const_pointer());
}
clearBuffers(clearBackBuffer, clearZBuffer, false, color);
return true;
}
// returns the current size of the screen or rendertarget
const core::dimension2d<u32>& COpenGLDriver::getCurrentRenderTargetSize() const
{
if (CurrentRendertargetSize.Width == 0)
return ScreenSize;
else
return CurrentRendertargetSize;
}
//! Clears the ZBuffer.
void COpenGLDriver::clearZBuffer()
{
clearBuffers(false, true, false, 0x0);
}
//! Returns an image created from the last rendered frame.
IImage* COpenGLDriver::createScreenShot(video::ECOLOR_FORMAT format, video::E_RENDER_TARGET target)
{
if (target==video::ERT_MULTI_RENDER_TEXTURES || target==video::ERT_RENDER_TEXTURE || target==video::ERT_STEREO_BOTH_BUFFERS)
return 0;
if (format==video::ECF_UNKNOWN)
format=getColorFormat();
GLenum fmt;
GLenum type;
switch (format)
{
case ECF_A1R5G5B5:
fmt = GL_BGRA;
type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
break;
case ECF_R5G6B5:
fmt = GL_RGB;
type = GL_UNSIGNED_SHORT_5_6_5;
break;
case ECF_R8G8B8:
fmt = GL_RGB;
type = GL_UNSIGNED_BYTE;
break;
case ECF_A8R8G8B8:
fmt = GL_BGRA;
if (Version > 101)
type = GL_UNSIGNED_INT_8_8_8_8_REV;
else
type = GL_UNSIGNED_BYTE;
break;
case ECF_R8G8:
// GL_ARB_texture_rg is considered always available in headers. No ifdefs.
fmt = GL_RG;
type = GL_UNSIGNED_BYTE;
break;
case ECF_R16G16:
fmt = GL_RG;
type = GL_UNSIGNED_SHORT;
break;
case ECF_R8:
fmt = GL_RED;
type = GL_UNSIGNED_BYTE;
break;
case ECF_R16:
fmt = GL_RED;
type = GL_UNSIGNED_SHORT;
break;
case ECF_R16F:
if (FeatureAvailable[IRR_ARB_texture_rg])
fmt = GL_RED;
else
fmt = GL_LUMINANCE;
#ifdef GL_ARB_half_float_pixel
if (FeatureAvailable[IRR_ARB_half_float_pixel])
type = GL_HALF_FLOAT_ARB;
else
#endif
{
type = GL_FLOAT;
format = ECF_R32F;
}
break;
case ECF_G16R16F:
#ifdef GL_ARB_texture_rg
if (FeatureAvailable[IRR_ARB_texture_rg])
fmt = GL_RG;
else
#endif
fmt = GL_LUMINANCE_ALPHA;
#ifdef GL_ARB_half_float_pixel
if (FeatureAvailable[IRR_ARB_half_float_pixel])
type = GL_HALF_FLOAT_ARB;
else
#endif
{
type = GL_FLOAT;
format = ECF_G32R32F;
}
break;
case ECF_A16B16G16R16F:
fmt = GL_BGRA;
#ifdef GL_ARB_half_float_pixel
if (FeatureAvailable[IRR_ARB_half_float_pixel])
type = GL_HALF_FLOAT_ARB;
else
#endif
{
type = GL_FLOAT;
format = ECF_A32B32G32R32F;
}
break;
case ECF_R32F:
if (FeatureAvailable[IRR_ARB_texture_rg])
fmt = GL_RED;
else
fmt = GL_LUMINANCE;
type = GL_FLOAT;
break;
case ECF_G32R32F:
#ifdef GL_ARB_texture_rg
if (FeatureAvailable[IRR_ARB_texture_rg])
fmt = GL_RG;
else
#endif
fmt = GL_LUMINANCE_ALPHA;
type = GL_FLOAT;
break;
case ECF_A32B32G32R32F:
fmt = GL_BGRA;
type = GL_FLOAT;
break;
default:
fmt = GL_BGRA;
type = GL_UNSIGNED_BYTE;
break;
}
IImage* newImage = createImage(format, ScreenSize);
u8* pixels = 0;
if (newImage)
pixels = static_cast<u8*>(newImage->lock());
if (pixels)
{
GLenum tgt=GL_BACK;
switch (target)
{
case video::ERT_FRAME_BUFFER:
break;
case video::ERT_STEREO_LEFT_BUFFER:
tgt=GL_FRONT_LEFT;
break;
case video::ERT_STEREO_RIGHT_BUFFER:
tgt=GL_FRONT_RIGHT;
break;
default:
tgt=GL_AUX0+(target-video::ERT_AUX_BUFFER0);
break;
}
glReadBuffer(tgt);
glReadPixels(0, 0, ScreenSize.Width, ScreenSize.Height, fmt, type, pixels);
testGLError();
glReadBuffer(GL_BACK);
}
if (pixels)
{
// opengl images are horizontally flipped, so we have to fix that here.
const s32 pitch=newImage->getPitch();
u8* p2 = pixels + (ScreenSize.Height - 1) * pitch;
u8* tmpBuffer = new u8[pitch];
for (u32 i=0; i < ScreenSize.Height; i += 2)
{
memcpy(tmpBuffer, pixels, pitch);
// for (u32 j=0; j<pitch; ++j)
// {
// pixels[j]=(u8)(p2[j]*255.f);
// }
memcpy(pixels, p2, pitch);
// for (u32 j=0; j<pitch; ++j)
// {
// p2[j]=(u8)(tmpBuffer[j]*255.f);
// }
memcpy(p2, tmpBuffer, pitch);
pixels += pitch;
p2 -= pitch;
}
delete [] tmpBuffer;
}
if (newImage)
{
newImage->unlock();
if (testGLError() || !pixels)
{
newImage->drop();
return 0;
}
}
return newImage;
}
//! get depth texture for the given render target texture
ITexture* COpenGLDriver::createDepthTexture(ITexture* texture, const bool useStencil, const bool shared)
{
if ((texture->getDriverType() != EDT_OPENGL) || (!texture->isRenderTarget()))
return 0;
COpenGLTexture* tex = static_cast<COpenGLTexture*>(texture);
if (!tex->isFrameBufferObject())
return 0;
if (shared)
{
for (u32 i=0; i<DepthTextures.size(); ++i)
{
if (DepthTextures[i]->getSize()==texture->getSize() &&
useStencil == DepthTextures[i]->hasStencil())
{
DepthTextures[i]->grab();
return DepthTextures[i];
}
}
DepthTextures.push_back(new COpenGLFBODepthTexture(texture->getSize(), "depth1", this, useStencil));
return DepthTextures.getLast();
}
return (new COpenGLFBODepthTexture(texture->getSize(), "depth1", this, useStencil));
}
void COpenGLDriver::removeDepthTexture(ITexture* texture)
{
for (u32 i=0; i<DepthTextures.size(); ++i)
{
if (texture==DepthTextures[i])
{
DepthTextures.erase(i);
return;
}
}
}
//! Set/unset a clipping plane.
bool COpenGLDriver::setClipPlane(u32 index, const core::plane3df& plane, bool enable)
{
if (index >= MaxUserClipPlanes)
return false;
UserClipPlanes[index].Plane=plane;
enableClipPlane(index, enable);
return true;
}
void COpenGLDriver::uploadClipPlane(u32 index)
{
// opengl needs an array of doubles for the plane equation
GLdouble clip_plane[4];
clip_plane[0] = UserClipPlanes[index].Plane.Normal.X;
clip_plane[1] = UserClipPlanes[index].Plane.Normal.Y;
clip_plane[2] = UserClipPlanes[index].Plane.Normal.Z;
clip_plane[3] = UserClipPlanes[index].Plane.D;
glClipPlane(GL_CLIP_PLANE0 + index, clip_plane);
}
//! Enable/disable a clipping plane.
void COpenGLDriver::enableClipPlane(u32 index, bool enable)
{
if (index >= MaxUserClipPlanes)
return;
if (enable)
{
if (!UserClipPlanes[index].Enabled)
{
uploadClipPlane(index);
glEnable(GL_CLIP_PLANE0 + index);
}
}
else
glDisable(GL_CLIP_PLANE0 + index);
UserClipPlanes[index].Enabled=enable;
}
core::dimension2du COpenGLDriver::getMaxTextureSize() const
{
return core::dimension2du(MaxTextureSize, MaxTextureSize);
}
//! Convert E_PRIMITIVE_TYPE to OpenGL equivalent
GLenum COpenGLDriver::primitiveTypeToGL(scene::E_PRIMITIVE_TYPE type) const
{
switch (type)
{
case scene::EPT_POINTS:
return GL_POINTS;
case scene::EPT_LINE_STRIP:
return GL_LINE_STRIP;
case scene::EPT_LINE_LOOP:
return GL_LINE_LOOP;
case scene::EPT_LINES:
return GL_LINES;
case scene::EPT_TRIANGLE_STRIP:
return GL_TRIANGLE_STRIP;
case scene::EPT_TRIANGLE_FAN:
return GL_TRIANGLE_FAN;
case scene::EPT_TRIANGLES:
return GL_TRIANGLES;
case scene::EPT_QUAD_STRIP:
return GL_QUAD_STRIP;
case scene::EPT_QUADS:
return GL_QUADS;
case scene::EPT_POLYGON:
return GL_POLYGON;
case scene::EPT_POINT_SPRITES:
#ifdef GL_ARB_point_sprite
return GL_POINT_SPRITE_ARB;
#else
return GL_POINTS;
#endif
}
return GL_TRIANGLES;
}
GLenum COpenGLDriver::getGLBlend(E_BLEND_FACTOR factor) const
{
GLenum r = 0;
switch (factor)
{
case EBF_ZERO: r = GL_ZERO; break;
case EBF_ONE: r = GL_ONE; break;
case EBF_DST_COLOR: r = GL_DST_COLOR; break;
case EBF_ONE_MINUS_DST_COLOR: r = GL_ONE_MINUS_DST_COLOR; break;
case EBF_SRC_COLOR: r = GL_SRC_COLOR; break;
case EBF_ONE_MINUS_SRC_COLOR: r = GL_ONE_MINUS_SRC_COLOR; break;
case EBF_SRC_ALPHA: r = GL_SRC_ALPHA; break;
case EBF_ONE_MINUS_SRC_ALPHA: r = GL_ONE_MINUS_SRC_ALPHA; break;
case EBF_DST_ALPHA: r = GL_DST_ALPHA; break;
case EBF_ONE_MINUS_DST_ALPHA: r = GL_ONE_MINUS_DST_ALPHA; break;
case EBF_SRC_ALPHA_SATURATE: r = GL_SRC_ALPHA_SATURATE; break;
}
return r;
}
GLenum COpenGLDriver::getZBufferBits() const
{
GLenum bits = 0;
switch (Params.ZBufferBits)
{
case 16:
bits = GL_DEPTH_COMPONENT16;
break;
case 24:
bits = GL_DEPTH_COMPONENT24;
break;
case 32:
bits = GL_DEPTH_COMPONENT32;
break;
default:
bits = GL_DEPTH_COMPONENT;
break;
}
return bits;
}
} // end namespace
} // end namespace
#endif // _IRR_COMPILE_WITH_OPENGL_
namespace irr
{
namespace video
{
// -----------------------------------
// WINDOWS VERSION
// -----------------------------------
#ifdef _IRR_COMPILE_WITH_WINDOWS_DEVICE_
IVideoDriver* createOpenGLDriver(const SIrrlichtCreationParameters& params,
io::IFileSystem* io, CIrrDeviceWin32* device)
{
#ifdef _IRR_COMPILE_WITH_OPENGL_
COpenGLDriver* ogl = new COpenGLDriver(params, io, device);
if (!ogl->initDriver(device))
{
ogl->drop();
ogl = 0;
}
return ogl;
#else
return 0;
#endif // _IRR_COMPILE_WITH_OPENGL_
}
#endif // _IRR_COMPILE_WITH_WINDOWS_DEVICE_
// -----------------------------------
// MACOSX VERSION
// -----------------------------------
#if defined(_IRR_COMPILE_WITH_OSX_DEVICE_)
IVideoDriver* createOpenGLDriver(const SIrrlichtCreationParameters& params,
io::IFileSystem* io, CIrrDeviceMacOSX *device)
{
#ifdef _IRR_COMPILE_WITH_OPENGL_
return new COpenGLDriver(params, io, device);
#else
return 0;
#endif // _IRR_COMPILE_WITH_OPENGL_
}
#endif // _IRR_COMPILE_WITH_OSX_DEVICE_
// -----------------------------------
// X11 VERSION
// -----------------------------------
#ifdef _IRR_COMPILE_WITH_X11_DEVICE_
IVideoDriver* createOpenGLDriver(const SIrrlichtCreationParameters& params,
io::IFileSystem* io, CIrrDeviceLinux* device)
{
#ifdef _IRR_COMPILE_WITH_OPENGL_
COpenGLDriver* ogl = new COpenGLDriver(params, io, device);
if (!ogl->initDriver(device))
{
ogl->drop();
ogl = 0;
}
return ogl;
#else
return 0;
#endif // _IRR_COMPILE_WITH_OPENGL_
}
#endif // _IRR_COMPILE_WITH_X11_DEVICE_
// -----------------------------------
// Wayland VERSION
// -----------------------------------
#ifdef _IRR_COMPILE_WITH_WAYLAND_DEVICE_
IVideoDriver* createOpenGLDriver(const SIrrlichtCreationParameters& params,
io::IFileSystem* io, CIrrDeviceWayland* device)
{
#ifdef _IRR_COMPILE_WITH_OPENGL_
COpenGLDriver* ogl = new COpenGLDriver(params, io, device);
if (!ogl->initDriver(device))
{
ogl->drop();
ogl = 0;
}
return ogl;
#else
return 0;
#endif // _IRR_COMPILE_WITH_OPENGL_
}
#endif // _IRR_COMPILE_WITH_WAYLAND_DEVICE
// -----------------------------------
// SDL VERSION
// -----------------------------------
#ifdef _IRR_COMPILE_WITH_SDL_DEVICE_
IVideoDriver* createOpenGLDriver(const SIrrlichtCreationParameters& params,
io::IFileSystem* io, CIrrDeviceSDL* device)
{
#ifdef _IRR_COMPILE_WITH_OPENGL_
return new COpenGLDriver(params, io, device);
#else
return 0;
#endif // _IRR_COMPILE_WITH_OPENGL_
}
#endif // _IRR_COMPILE_WITH_SDL_DEVICE_
} // end namespace
} // end namespace
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