stk-code_catmod/lib/irrlicht/source/Irrlicht/COGLES2Driver.h
2017-09-27 23:20:35 +02:00

557 lines
18 KiB
C++

// Copyright (C) 2013 Patryk Nadrowski
// Heavily based on the OpenGL driver implemented by Nikolaus Gebhardt
// OpenGL ES driver implemented by Christian Stehno and first OpenGL ES 2.0
// driver implemented by Amundis.
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in Irrlicht.h
#ifndef __C_OGLES2_DRIVER_H_INCLUDED__
#define __C_OGLES2_DRIVER_H_INCLUDED__
#include "IrrCompileConfig.h"
#if defined(_IRR_COMPILE_WITH_OSX_DEVICE_)
#include "MacOSX/CIrrDeviceMacOSX.h"
#elif defined(_IRR_COMPILE_WITH_IPHONE_DEVICE_)
#include "iOS/CIrrDeviceiOS.h"
#elif _IRR_COMPILE_WITH_WAYLAND_DEVICE_
#include "CIrrDeviceWayland.h"
#endif
#include "SIrrCreationParameters.h"
#ifdef _IRR_COMPILE_WITH_OGLES2_
#if defined(_IRR_COMPILE_WITH_IPHONE_DEVICE_)
#include <OpenGLES/ES2/gl.h>
#include <OpenGLES/ES2/glext.h>
#elif defined(_IRR_COMPILE_WITH_ANDROID_DEVICE_)
#include <GLES2/gl2.h>
#include "android_native_app_glue.h"
#endif
#include "CNullDriver.h"
#include "IMaterialRendererServices.h"
#include "EDriverFeatures.h"
#include "fast_atof.h"
#ifdef _MSC_VER
#pragma comment(lib, "libGLESv2.lib")
#endif
#include "COGLES2ExtensionHandler.h"
class ContextManagerEGL;
namespace irr
{
namespace video
{
class COGLES2CallBridge;
class COGLES2Texture;
class COGLES2FixedPipelineRenderer;
class COGLES2Renderer2D;
class COGLES2NormalMapRenderer;
class COGLES2ParallaxMapRenderer;
class COGLES2Driver : public CNullDriver, public IMaterialRendererServices, public COGLES2ExtensionHandler
{
friend class COGLES2CallBridge;
friend class COGLES2Texture;
public:
#if defined(_IRR_COMPILE_WITH_X11_DEVICE_) || defined(_IRR_COMPILE_WITH_SDL_DEVICE_) || defined(_IRR_WINDOWS_API_) || defined(_IRR_COMPILE_WITH_ANDROID_DEVICE_)
COGLES2Driver(const SIrrlichtCreationParameters& params,
const SExposedVideoData& data,
io::IFileSystem* io);
#endif
#ifdef _IRR_COMPILE_WITH_WAYLAND_DEVICE_
COGLES2Driver(const SIrrlichtCreationParameters& params,
io::IFileSystem* io, CIrrDeviceWayland* device);
#endif
#ifdef _IRR_COMPILE_WITH_OSX_DEVICE_
COGLES2Driver(const SIrrlichtCreationParameters& params,
io::IFileSystem* io, CIrrDeviceMacOSX *device);
#endif
#if defined(_IRR_COMPILE_WITH_IPHONE_DEVICE_)
COGLES2Driver(const SIrrlichtCreationParameters& params,
const SExposedVideoData& data,
io::IFileSystem* io, CIrrDeviceIPhone* device);
#endif
//! destructor
virtual ~COGLES2Driver();
//! clears the zbuffer
virtual bool beginScene(bool backBuffer=true, bool zBuffer=true,
SColor color=SColor(255, 0, 0, 0),
const SExposedVideoData& videoData=SExposedVideoData(),
core::rect<s32>* sourceRect=0);
//! presents the rendered scene on the screen, returns false if failed
virtual bool endScene();
//! sets transformation
virtual void setTransform(E_TRANSFORMATION_STATE state, const core::matrix4& mat);
struct SHWBufferLink_opengl : public SHWBufferLink
{
SHWBufferLink_opengl(const scene::IMeshBuffer *meshBuffer): SHWBufferLink(meshBuffer), vbo_verticesID(0), vbo_indicesID(0) {}
u32 vbo_verticesID; //tmp
u32 vbo_indicesID; //tmp
u32 vbo_verticesSize; //tmp
u32 vbo_indicesSize; //tmp
};
bool updateVertexHardwareBuffer(SHWBufferLink_opengl *HWBuffer);
bool updateIndexHardwareBuffer(SHWBufferLink_opengl *HWBuffer);
//! updates hardware buffer if needed
virtual bool updateHardwareBuffer(SHWBufferLink *HWBuffer);
//! Create hardware buffer from mesh
virtual SHWBufferLink *createHardwareBuffer(const scene::IMeshBuffer* mb);
//! Delete hardware buffer (only some drivers can)
virtual void deleteHardwareBuffer(SHWBufferLink *HWBuffer);
//! Draw hardware buffer
virtual void drawHardwareBuffer(SHWBufferLink *HWBuffer);
//! draws a vertex primitive list
virtual void drawVertexPrimitiveList(const void* vertices, u32 vertexCount,
const void* indexList, u32 primitiveCount,
E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType, E_INDEX_TYPE iType);
void drawVertexPrimitiveList2d3d(const void* vertices, u32 vertexCount,
const void* indexList, u32 primitiveCount,
E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType,
E_INDEX_TYPE iType = EIT_16BIT, bool threed = true);
//! queries the features of the driver, returns true if feature is available
virtual bool queryFeature(E_VIDEO_DRIVER_FEATURE feature) const
{
return FeatureEnabled[feature] && COGLES2ExtensionHandler::queryFeature(feature);
}
//! Sets a material.
virtual void setMaterial(const SMaterial& material);
//! draws an 2d image, using a color (if color is other then Color(255,255,255,255)) and the alpha channel of the texture if wanted.
virtual void draw2DImage(const video::ITexture* texture,
const core::position2d<s32>& destPos,
const core::rect<s32>& sourceRect, const core::rect<s32>* clipRect = 0,
SColor color = SColor(255, 255, 255, 255), bool useAlphaChannelOfTexture = false);
//! draws a set of 2d images
virtual void draw2DImageBatch(const video::ITexture* texture,
const core::position2d<s32>& pos,
const core::array<core::rect<s32> >& sourceRects,
const core::array<s32>& indices, s32 kerningWidth = 0,
const core::rect<s32>* clipRect = 0,
SColor color = SColor(255, 255, 255, 255),
bool useAlphaChannelOfTexture = false);
//! Draws a part of the texture into the rectangle.
virtual void draw2DImage(const video::ITexture* texture, const core::rect<s32>& destRect,
const core::rect<s32>& sourceRect, const core::rect<s32>* clipRect = 0,
const video::SColor* const colors = 0, bool useAlphaChannelOfTexture = false);
void 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);
//! draw an 2d rectangle
virtual void draw2DRectangle(SColor color, const core::rect<s32>& pos,
const core::rect<s32>* clip = 0);
//!Draws an 2d rectangle with a gradient.
virtual void draw2DRectangle(const core::rect<s32>& pos,
SColor colorLeftUp, SColor colorRightUp, SColor colorLeftDown, SColor colorRightDown,
const core::rect<s32>* clip = 0);
//! Draws a 2d line.
virtual void draw2DLine(const core::position2d<s32>& start,
const core::position2d<s32>& end,
SColor color = SColor(255, 255, 255, 255));
//! Draws a single pixel
virtual void drawPixel(u32 x, u32 y, const SColor & color);
//! Draws a 3d line.
virtual void draw3DLine(const core::vector3df& start,
const core::vector3df& end,
SColor color = SColor(255, 255, 255, 255));
//! Draws a pixel
// virtual void drawPixel(u32 x, u32 y, const SColor & color);
//! Returns the name of the video driver.
virtual const wchar_t* getName() const;
//! deletes all dynamic lights there are
virtual void deleteAllDynamicLights();
//! adds a dynamic light
virtual s32 addDynamicLight(const SLight& light);
//! 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 */
virtual void turnLightOn(s32 lightIndex, bool turnOn);
//! returns the maximal amount of dynamic lights the device can handle
virtual u32 getMaximalDynamicLightAmount() const;
//! Sets the dynamic ambient light color.
virtual void setAmbientLight(const SColorf& color);
//! return the dynamic ambient light color.
const SColorf& getAmbientLight() const;
//! Returns the maximum texture size supported.
virtual core::dimension2du getMaxTextureSize() const;
//! Draws a shadow volume into the stencil buffer.
virtual void drawStencilShadowVolume(const core::vector3df* triangles, s32 count, bool zfail);
//! Fills the stencil shadow with color.
virtual void drawStencilShadow(bool clearStencilBuffer = false,
video::SColor leftUpEdge = video::SColor(0, 0, 0, 0),
video::SColor rightUpEdge = video::SColor(0, 0, 0, 0),
video::SColor leftDownEdge = video::SColor(0, 0, 0, 0),
video::SColor rightDownEdge = video::SColor(0, 0, 0, 0));
//! sets a viewport
virtual void setViewPort(const core::rect<s32>& area);
//! Only used internally by the engine
virtual void OnResize(const core::dimension2d<u32>& size);
//! Returns type of video driver
virtual E_DRIVER_TYPE getDriverType() const;
//! get color format of the current color buffer
virtual ECOLOR_FORMAT getColorFormat() const;
//! Returns the transformation set by setTransform
virtual const core::matrix4& getTransform(E_TRANSFORMATION_STATE state) const;
//! Can be called by an IMaterialRenderer to make its work easier.
virtual void setBasicRenderStates(const SMaterial& material, const SMaterial& lastmaterial, bool resetAllRenderstates);
//! Compare in SMaterial doesn't check texture parameters, so we should call this on each OnRender call.
virtual void setTextureRenderStates(const SMaterial& material, bool resetAllRenderstates);
//! Get a vertex shader constant index.
virtual s32 getVertexShaderConstantID(const c8* name);
//! Get a pixel shader constant index.
virtual s32 getPixelShaderConstantID(const c8* name);
//! Sets a vertex shader constant.
virtual void setVertexShaderConstant(const f32* data, s32 startRegister, s32 constantAmount = 1);
//! Sets a pixel shader constant.
virtual void setPixelShaderConstant(const f32* data, s32 startRegister, s32 constantAmount = 1);
//! Sets a constant for the vertex shader based on an index.
virtual bool setVertexShaderConstant(s32 index, const f32* floats, int count);
//! Int interface for the above.
virtual bool setVertexShaderConstant(s32 index, const s32* ints, int count);
//! Sets a constant for the pixel shader based on an index.
virtual bool setPixelShaderConstant(s32 index, const f32* floats, int count);
//! Int interface for the above.
virtual bool setPixelShaderConstant(s32 index, const s32* ints, int count);
//! sets the current Texture
bool setActiveTexture(u32 stage, const video::ITexture* texture);
//! check if active texture is not equal null.
bool isActiveTexture(u32 stage);
//! disables all textures beginning with fromStage.
bool disableTextures(u32 fromStage = 0);
//! Adds a new material renderer to the VideoDriver
virtual s32 addShaderMaterial(const c8* vertexShaderProgram, const c8* pixelShaderProgram,
IShaderConstantSetCallBack* callback, E_MATERIAL_TYPE baseMaterial, s32 userData);
//! Adds a new material renderer to the VideoDriver
virtual s32 addHighLevelShaderMaterial(
const c8* vertexShaderProgram,
const c8* vertexShaderEntryPointName = 0,
E_VERTEX_SHADER_TYPE vsCompileTarget = EVST_VS_1_1,
const c8* pixelShaderProgram = 0,
const c8* pixelShaderEntryPointName = 0,
E_PIXEL_SHADER_TYPE psCompileTarget = EPST_PS_1_1,
const c8* geometryShaderProgram = 0,
const c8* geometryShaderEntryPointName = "main",
E_GEOMETRY_SHADER_TYPE gsCompileTarget = EGST_GS_4_0,
scene::E_PRIMITIVE_TYPE inType = scene::EPT_TRIANGLES,
scene::E_PRIMITIVE_TYPE outType = scene::EPT_TRIANGLE_STRIP,
u32 verticesOut = 0,
IShaderConstantSetCallBack* callback = 0,
E_MATERIAL_TYPE baseMaterial = video::EMT_SOLID,
s32 userData=0,
E_GPU_SHADING_LANGUAGE shadingLang = EGSL_DEFAULT);
//! Returns pointer to the IGPUProgrammingServices interface.
virtual IGPUProgrammingServices* getGPUProgrammingServices();
//! Returns a pointer to the IVideoDriver interface.
virtual IVideoDriver* getVideoDriver();
//! Returns the maximum amount of primitives
virtual u32 getMaximalPrimitiveCount() const;
virtual ITexture* addRenderTargetTexture(const core::dimension2d<u32>& size,
const io::path& name, const ECOLOR_FORMAT format = ECF_UNKNOWN,
const bool useStencil = false);
virtual bool setRenderTarget(video::ITexture* texture, bool clearBackBuffer,
bool clearZBuffer, SColor color);
//! set or reset special render targets
// virtual bool setRenderTarget(video::E_RENDER_TARGET target, bool clearTarget,
// bool clearZBuffer, SColor color);
//! Sets multiple render targets
// virtual bool setRenderTarget(const core::array<video::IRenderTarget>& texture,
// bool clearBackBuffer=true, bool clearZBuffer=true, SColor color=SColor(0,0,0,0));
//! Clears the ZBuffer.
virtual void clearZBuffer();
//! Returns an image created from the last rendered frame.
virtual IImage* createScreenShot(video::ECOLOR_FORMAT format=video::ECF_UNKNOWN, video::E_RENDER_TARGET target=video::ERT_FRAME_BUFFER);
//! checks if an OpenGL error has happend and prints it
bool testGLError();
//! Set/unset a clipping plane.
virtual bool setClipPlane(u32 index, const core::plane3df& plane, bool enable = false);
//! returns the current amount of user clip planes set.
u32 getClipPlaneCount() const;
//! returns the 0 indexed Plane
const core::plane3df& getClipPlane(u32 index) const;
//! Enable/disable a clipping plane.
virtual void enableClipPlane(u32 index, bool enable);
//! Returns the graphics card vendor name.
virtual core::stringc getVendorInfo()
{
return vendorName;
};
ITexture* createDepthTexture(ITexture* texture, bool shared = true);
void removeDepthTexture(ITexture* texture);
void deleteFramebuffers(s32 n, const u32 *framebuffers);
void deleteRenderbuffers(s32 n, const u32 *renderbuffers);
// returns the current size of the screen or rendertarget
virtual const core::dimension2d<u32>& getCurrentRenderTargetSize() const;
//! Convert E_BLEND_FACTOR to OpenGL equivalent
GLenum getGLBlend(E_BLEND_FACTOR factor) const;
//! Get ZBuffer bits.
GLenum getZBufferBits() const;
//! Get current material.
const SMaterial& getCurrentMaterial() const;
//! Get bridge calls.
COGLES2CallBridge* getBridgeCalls() const;
#if defined(_IRR_COMPILE_WITH_EGL_)
ContextManagerEGL* getEGLContext() {return EglContext;}
#endif
private:
// Bridge calls.
COGLES2CallBridge* BridgeCalls;
void uploadClipPlane(u32 index);
//! inits the opengl-es driver
bool genericDriverInit(const core::dimension2d<u32>& screenSize, bool stencilBuffer);
//! returns a device dependent texture from a software surface (IImage)
virtual video::ITexture* createDeviceDependentTexture(IImage* surface, const io::path& name, void* mipmapData);
//! creates a transposed matrix in supplied GLfloat array to pass to OGLES1
inline void createGLMatrix(float gl_matrix[16], const core::matrix4& m);
inline void createGLTextureMatrix(float gl_matrix[16], const core::matrix4& m);
//! Map Irrlicht wrap mode to OpenGL enum
GLint getTextureWrapMode(u8 clamp) const;
//! sets the needed renderstates
void setRenderStates3DMode();
//! sets the needed renderstates
void setRenderStates2DMode(bool alpha, bool texture, bool alphaChannel);
void createMaterialRenderers();
core::stringw Name;
core::matrix4 Matrices[ETS_COUNT];
//! enumeration for rendering modes such as 2d and 3d for minizing the switching of renderStates.
enum E_RENDER_MODE
{
ERM_NONE = 0, // no render state has been set yet.
ERM_2D, // 2d drawing rendermode
ERM_3D // 3d rendering mode
};
E_RENDER_MODE CurrentRenderMode;
//! bool to make all renderstates reset if set to true.
bool ResetRenderStates;
bool Transformation3DChanged;
u8 AntiAlias;
SMaterial Material, LastMaterial;
COGLES2Texture* RenderTargetTexture;
const ITexture* CurrentTexture[MATERIAL_MAX_TEXTURES];
core::array<ITexture*> DepthTextures;
struct SUserClipPlane
{
core::plane3df Plane;
bool Enabled;
};
core::array<SUserClipPlane> UserClipPlane;
core::dimension2d<u32> CurrentRendertargetSize;
core::stringc vendorName;
core::matrix4 TextureFlipMatrix;
//! Color buffer format
ECOLOR_FORMAT ColorFormat;
//! All the lights that have been requested; a hardware limited
//! number of them will be used at once.
struct RequestedLight
{
RequestedLight(SLight const & lightData)
: LightData(lightData), DesireToBeOn(true) { }
SLight LightData;
bool DesireToBeOn;
};
core::array<RequestedLight> RequestedLights;
SColorf AmbientLight;
COGLES2Renderer2D* MaterialRenderer2D;
#if defined(_IRR_COMPILE_WITH_EGL_)
ContextManagerEGL* EglContext;
bool EglContextExternal;
#endif
#if defined(_IRR_COMPILE_WITH_IPHONE_DEVICE_)
CIrrDeviceIPhone* Device;
GLuint ViewFramebuffer;
GLuint ViewRenderbuffer;
GLuint ViewDepthRenderbuffer;
#endif
#ifdef _IRR_COMPILE_WITH_WINDOWS_DEVICE_
HDC HDc;
#endif
SIrrlichtCreationParameters Params;
};
//! This bridge between Irlicht pseudo OpenGL calls
//! and true OpenGL calls.
class COGLES2CallBridge
{
public:
COGLES2CallBridge(COGLES2Driver* driver);
// Blending calls.
void setBlendFunc(GLenum source, GLenum destination);
void setBlend(bool enable);
// Cull face calls.
void setCullFaceFunc(GLenum mode);
void setCullFace(bool enable);
// Depth calls.
void setDepthFunc(GLenum mode);
void setDepthMask(bool enable);
void setDepthTest(bool enable);
// Program calls.
void setProgram(GLuint program);
// Texture calls.
void setActiveTexture(GLenum texture);
void setTexture(u32 stage);
// Viewport calls.
void setViewport(const core::rect<s32>& viewport);
private:
COGLES2Driver* Driver;
GLenum BlendSource;
GLenum BlendDestination;
bool Blend;
GLenum CullFaceMode;
bool CullFace;
GLenum DepthFunc;
bool DepthMask;
bool DepthTest;
GLuint Program;
GLenum ActiveTexture;
const ITexture* Texture[MATERIAL_MAX_TEXTURES];
core::rect<s32> Viewport;
};
} // end namespace video
} // end namespace irr
#endif // _IRR_COMPILE_WITH_OPENGL_
#endif