stk-code_catmod/src/graphics/post_processing.cpp
2014-06-08 22:18:32 +02:00

892 lines
35 KiB
C++

// SuperTuxKart - a fun racing game with go-kart
// Copyright (C) 2011-2013 the SuperTuxKart-Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 3
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
#include "post_processing.hpp"
#include "config/user_config.hpp"
#include "graphics/callbacks.hpp"
#include "graphics/camera.hpp"
#include "graphics/glwrap.hpp"
#include "graphics/irr_driver.hpp"
#include "graphics/mlaa_areamap.hpp"
#include "graphics/shaders.hpp"
#include "graphics/stkmeshscenenode.hpp"
#include "io/file_manager.hpp"
#include "karts/abstract_kart.hpp"
#include "karts/kart_model.hpp"
#include "modes/world.hpp"
#include "race/race_manager.hpp"
#include "tracks/track.hpp"
#include "utils/log.hpp"
#include "utils/profiler.hpp"
#include <SViewFrustum.h>
using namespace video;
using namespace scene;
PostProcessing::PostProcessing(IVideoDriver* video_driver)
{
// Initialization
m_material.Wireframe = false;
m_material.Lighting = false;
m_material.ZWriteEnable = false;
m_material.ZBuffer = ECFN_ALWAYS;
m_material.setFlag(EMF_TRILINEAR_FILTER, true);
for (u32 i = 0; i < MATERIAL_MAX_TEXTURES; ++i)
{
m_material.TextureLayer[i].TextureWrapU =
m_material.TextureLayer[i].TextureWrapV = ETC_CLAMP_TO_EDGE;
}
// Load the MLAA area map
io::IReadFile *areamap = irr_driver->getDevice()->getFileSystem()->
createMemoryReadFile((void *) AreaMap33, sizeof(AreaMap33),
"AreaMap33", false);
if (!areamap)
{
Log::fatal("postprocessing", "Failed to load the areamap");
return;
}
m_areamap = irr_driver->getVideoDriver()->getTexture(areamap);
areamap->drop();
} // PostProcessing
// ----------------------------------------------------------------------------
PostProcessing::~PostProcessing()
{
// TODO: do we have to delete/drop anything?
} // ~PostProcessing
// ----------------------------------------------------------------------------
/** Initialises post processing at the (re-)start of a race. This sets up
* the vertices, normals and texture coordinates for each
*/
void PostProcessing::reset()
{
const u32 n = Camera::getNumCameras();
m_boost_time.resize(n);
m_vertices.resize(n);
m_center.resize(n);
m_direction.resize(n);
MotionBlurProvider * const cb = (MotionBlurProvider *) irr_driver->
getCallback(ES_MOTIONBLUR);
for(unsigned int i=0; i<n; i++)
{
m_boost_time[i] = 0.0f;
const core::recti &vp = Camera::getCamera(i)->getViewport();
// Map viewport to [-1,1] x [-1,1]. First define the coordinates
// left, right, top, bottom:
float right = vp.LowerRightCorner.X < UserConfigParams::m_width
? 0.0f : 1.0f;
float left = vp.UpperLeftCorner.X > 0.0f ? 0.0f : -1.0f;
float top = vp.UpperLeftCorner.Y > 0.0f ? 0.0f : 1.0f;
float bottom = vp.LowerRightCorner.Y < UserConfigParams::m_height
? 0.0f : -1.0f;
// Use left etc to define 4 vertices on which the rendered screen
// will be displayed:
m_vertices[i].v0.Pos = core::vector3df(left, bottom, 0);
m_vertices[i].v1.Pos = core::vector3df(left, top, 0);
m_vertices[i].v2.Pos = core::vector3df(right, top, 0);
m_vertices[i].v3.Pos = core::vector3df(right, bottom, 0);
// Define the texture coordinates of each vertex, which must
// be in [0,1]x[0,1]
m_vertices[i].v0.TCoords = core::vector2df(left ==-1.0f ? 0.0f : 0.5f,
bottom==-1.0f ? 0.0f : 0.5f);
m_vertices[i].v1.TCoords = core::vector2df(left ==-1.0f ? 0.0f : 0.5f,
top == 1.0f ? 1.0f : 0.5f);
m_vertices[i].v2.TCoords = core::vector2df(right == 0.0f ? 0.5f : 1.0f,
top == 1.0f ? 1.0f : 0.5f);
m_vertices[i].v3.TCoords = core::vector2df(right == 0.0f ? 0.5f : 1.0f,
bottom==-1.0f ? 0.0f : 0.5f);
// Set normal and color:
core::vector3df normal(0,0,1);
m_vertices[i].v0.Normal = m_vertices[i].v1.Normal =
m_vertices[i].v2.Normal = m_vertices[i].v3.Normal = normal;
SColor white(0xFF, 0xFF, 0xFF, 0xFF);
m_vertices[i].v0.Color = m_vertices[i].v1.Color =
m_vertices[i].v2.Color = m_vertices[i].v3.Color = white;
m_center[i].X=(m_vertices[i].v0.TCoords.X
+m_vertices[i].v2.TCoords.X) * 0.5f;
// Center is around 20 percent from bottom of screen:
const float tex_height = m_vertices[i].v1.TCoords.Y
- m_vertices[i].v0.TCoords.Y;
m_direction[i].X = m_center[i].X;
m_direction[i].Y = m_vertices[i].v0.TCoords.Y + 0.7f*tex_height;
setMotionBlurCenterY(i, 0.2f);
cb->setDirection(i, m_direction[i].X, m_direction[i].Y);
cb->setMaxHeight(i, m_vertices[i].v1.TCoords.Y);
} // for i <number of cameras
} // reset
void PostProcessing::setMotionBlurCenterY(const u32 num, const float y)
{
MotionBlurProvider * const cb = (MotionBlurProvider *) irr_driver->
getCallback(ES_MOTIONBLUR);
const float tex_height = m_vertices[num].v1.TCoords.Y - m_vertices[num].v0.TCoords.Y;
m_center[num].Y = m_vertices[num].v0.TCoords.Y + y * tex_height;
cb->setCenter(num, m_center[num].X, m_center[num].Y);
}
// ----------------------------------------------------------------------------
/** Setup some PP data.
*/
void PostProcessing::begin()
{
m_any_boost = false;
for (u32 i = 0; i < m_boost_time.size(); i++)
m_any_boost |= m_boost_time[i] > 0.01f;
} // beginCapture
// ----------------------------------------------------------------------------
/** Set the boost amount according to the speed of the camera */
void PostProcessing::giveBoost(unsigned int camera_index)
{
if (irr_driver->isGLSL())
{
m_boost_time[camera_index] = 0.75f;
MotionBlurProvider * const cb = (MotionBlurProvider *)irr_driver->
getCallback(ES_MOTIONBLUR);
cb->setBoostTime(camera_index, m_boost_time[camera_index]);
}
} // giveBoost
// ----------------------------------------------------------------------------
/** Updates the boost times for all cameras, called once per frame.
* \param dt Time step size.
*/
void PostProcessing::update(float dt)
{
if (!irr_driver->isGLSL())
return;
MotionBlurProvider* const cb =
(MotionBlurProvider*) irr_driver->getCallback(ES_MOTIONBLUR);
if (cb == NULL) return;
for (unsigned int i=0; i<m_boost_time.size(); i++)
{
if (m_boost_time[i] > 0.0f)
{
m_boost_time[i] -= dt;
if (m_boost_time[i] < 0.0f) m_boost_time[i] = 0.0f;
}
cb->setBoostTime(i, m_boost_time[i]);
}
} // update
static
void renderBloom(GLuint in)
{
float threshold = 1.0f;
if (World::getWorld() != NULL)
threshold = World::getWorld()->getTrack()->getBloomThreshold();
glUseProgram(FullScreenShader::BloomShader::Program);
glBindVertexArray(FullScreenShader::BloomShader::vao);
setTexture(0, in, GL_NEAREST, GL_NEAREST);
FullScreenShader::BloomShader::setUniforms(0);
glDrawArrays(GL_TRIANGLES, 0, 3);
}
void PostProcessing::renderDiffuseEnvMap(const float *bSHCoeff, const float *gSHCoeff, const float *rSHCoeff)
{
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_ONE, GL_ONE);
glUseProgram(FullScreenShader::DiffuseEnvMapShader::Program);
glBindVertexArray(FullScreenShader::DiffuseEnvMapShader::vao);
setTexture(0, irr_driver->getRenderTargetTexture(RTT_NORMAL_AND_DEPTH), GL_NEAREST, GL_NEAREST);
core::matrix4 TVM = irr_driver->getViewMatrix().getTransposed();
FullScreenShader::DiffuseEnvMapShader::setUniforms(TVM, bSHCoeff, gSHCoeff, rSHCoeff, 0);
glDrawArrays(GL_TRIANGLES, 0, 3);
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glEnable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
}
void PostProcessing::renderGI(const core::matrix4 &RHMatrix, const core::vector3df &rh_extend, GLuint shr, GLuint shg, GLuint shb)
{
glDisable(GL_DEPTH_TEST);
glUseProgram(FullScreenShader::GlobalIlluminationReconstructionShader::Program);
glBindVertexArray(FullScreenShader::GlobalIlluminationReconstructionShader::vao);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_3D, shr);
{
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_3D, shg);
{
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_3D, shb);
{
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
setTexture(3, irr_driver->getRenderTargetTexture(RTT_NORMAL_AND_DEPTH), GL_NEAREST, GL_NEAREST);
setTexture(4, irr_driver->getDepthStencilTexture(), GL_NEAREST, GL_NEAREST);
FullScreenShader::GlobalIlluminationReconstructionShader::setUniforms(RHMatrix, rh_extend, 3, 4, 0, 1, 2);
glDrawArrays(GL_TRIANGLES, 0, 3);
}
void PostProcessing::renderSunlight()
{
SunLightProvider * const cb = (SunLightProvider *) irr_driver->getCallback(ES_SUNLIGHT);
glEnable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
glBlendFunc(GL_ONE, GL_ONE);
glBlendEquation(GL_FUNC_ADD);
glUseProgram(FullScreenShader::SunLightShader::Program);
glBindVertexArray(FullScreenShader::SunLightShader::vao);
setTexture(0, irr_driver->getRenderTargetTexture(RTT_NORMAL_AND_DEPTH), GL_NEAREST, GL_NEAREST);
setTexture(1, irr_driver->getDepthStencilTexture(), GL_NEAREST, GL_NEAREST);
FullScreenShader::SunLightShader::setUniforms(cb->getPosition(), cb->getRed(), cb->getGreen(), cb->getBlue(), 0, 1);
glDrawArrays(GL_TRIANGLES, 0, 3);
glBindVertexArray(0);
}
void PostProcessing::renderShadowedSunlight(const std::vector<core::matrix4> &sun_ortho_matrix, GLuint depthtex)
{
SunLightProvider * const cb = (SunLightProvider *)irr_driver->getCallback(ES_SUNLIGHT);
glEnable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
glBlendFunc(GL_ONE, GL_ONE);
glBlendEquation(GL_FUNC_ADD);
setTexture(0, irr_driver->getRenderTargetTexture(RTT_NORMAL_AND_DEPTH), GL_NEAREST, GL_NEAREST);
setTexture(1, irr_driver->getDepthStencilTexture(), GL_NEAREST, GL_NEAREST);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D_ARRAY, depthtex);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_REF_TO_TEXTURE);
glTexParameterf(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL);
if (irr_driver->getShadowViz())
{
glUseProgram(FullScreenShader::ShadowedSunLightDebugShader::Program);
glBindVertexArray(FullScreenShader::ShadowedSunLightDebugShader::vao);
FullScreenShader::ShadowedSunLightDebugShader::setUniforms(cb->getPosition(), cb->getRed(), cb->getGreen(), cb->getBlue(), 0, 1, 2);
}
else
{
glUseProgram(FullScreenShader::ShadowedSunLightShader::Program);
glBindVertexArray(FullScreenShader::ShadowedSunLightShader::vao);
FullScreenShader::ShadowedSunLightShader::setUniforms(cb->getPosition(), cb->getRed(), cb->getGreen(), cb->getBlue(), 0, 1, 2);
}
glDrawArrays(GL_TRIANGLES, 0, 3);
glBindVertexArray(0);
}
void PostProcessing::renderGaussian3Blur(FrameBuffer &in_fbo, FrameBuffer &auxiliary)
{
assert(in_fbo.getWidth() == auxiliary.getWidth() && in_fbo.getHeight() == auxiliary.getHeight());
float inv_width = 1.0f / in_fbo.getWidth(), inv_height = 1.0f / in_fbo.getHeight();
{
auxiliary.Bind();
glUseProgram(FullScreenShader::Gaussian3VBlurShader::Program);
glBindVertexArray(FullScreenShader::Gaussian3VBlurShader::vao);
glUniform2f(FullScreenShader::Gaussian3VBlurShader::uniform_pixel, inv_width, inv_height);
setTexture(0, in_fbo.getRTT()[0], GL_LINEAR, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glUniform1i(FullScreenShader::Gaussian3VBlurShader::uniform_tex, 0);
glDrawArrays(GL_TRIANGLES, 0, 3);
}
{
in_fbo.Bind();
glUseProgram(FullScreenShader::Gaussian3HBlurShader::Program);
glBindVertexArray(FullScreenShader::Gaussian3HBlurShader::vao);
glUniform2f(FullScreenShader::Gaussian3HBlurShader::uniform_pixel, inv_width, inv_height);
setTexture(0, auxiliary.getRTT()[0], GL_LINEAR, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glUniform1i(FullScreenShader::Gaussian3HBlurShader::uniform_tex, 0);
glDrawArrays(GL_TRIANGLES, 0, 3);
}
}
void PostProcessing::renderGaussian6Blur(FrameBuffer &in_fbo, FrameBuffer &auxiliary)
{
assert(in_fbo.getWidth() == auxiliary.getWidth() && in_fbo.getHeight() == auxiliary.getHeight());
float inv_width = 1.0f / in_fbo.getWidth(), inv_height = 1.0f / in_fbo.getHeight();
{
auxiliary.Bind();
glUseProgram(FullScreenShader::Gaussian6VBlurShader::Program);
glBindVertexArray(FullScreenShader::Gaussian6VBlurShader::vao);
glUniform2f(FullScreenShader::Gaussian6VBlurShader::uniform_pixel, inv_width, inv_height);
setTexture(0, in_fbo.getRTT()[0], GL_LINEAR, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glUniform1i(FullScreenShader::Gaussian6VBlurShader::uniform_tex, 0);
glDrawArrays(GL_TRIANGLES, 0, 3);
}
{
in_fbo.Bind();
glUseProgram(FullScreenShader::Gaussian6HBlurShader::Program);
glBindVertexArray(FullScreenShader::Gaussian6HBlurShader::vao);
glUniform2f(FullScreenShader::Gaussian6HBlurShader::uniform_pixel, inv_width, inv_height);
setTexture(0, auxiliary.getRTT()[0], GL_LINEAR, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glUniform1i(FullScreenShader::Gaussian6HBlurShader::uniform_tex, 0);
glDrawArrays(GL_TRIANGLES, 0, 3);
}
}
void PostProcessing::renderGaussian17TapBlur(FrameBuffer &in_fbo, FrameBuffer &auxiliary)
{
assert(in_fbo.getWidth() == auxiliary.getWidth() && in_fbo.getHeight() == auxiliary.getHeight());
float inv_width = 1.0f / in_fbo.getWidth(), inv_height = 1.0f / in_fbo.getHeight();
{
#if WIN32
if (irr_driver->getGLSLVersion() < 430)
#endif
{
auxiliary.Bind();
glUseProgram(FullScreenShader::Gaussian17TapHShader::Program);
glBindVertexArray(FullScreenShader::Gaussian17TapHShader::vao);
glUniform2f(FullScreenShader::Gaussian17TapHShader::uniform_pixel, inv_width, inv_height);
setTexture(0, in_fbo.getRTT()[0], GL_LINEAR, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glUniform1i(FullScreenShader::Gaussian17TapHShader::uniform_tex, 0);
glDrawArrays(GL_TRIANGLES, 0, 3);
}
#if WIN32
else
{
glUseProgram(FullScreenShader::ComputeGaussian17TapHShader::Program);
glBindImageTexture(0, in_fbo.getRTT()[0], 0, false, 0, GL_READ_ONLY, GL_R16F);
glBindImageTexture(1, auxiliary.getRTT()[0], 0, false, 0, GL_WRITE_ONLY, GL_R16F);
glUniform1i(FullScreenShader::ComputeGaussian17TapHShader::uniform_source, 0);
glUniform1i(FullScreenShader::ComputeGaussian17TapHShader::uniform_dest, 1);
glDispatchCompute(in_fbo.getWidth() / 8, in_fbo.getHeight() / 8, 1);
}
#endif
}
{
#if WIN32
if (irr_driver->getGLSLVersion() < 430)
#endif
{
in_fbo.Bind();
glUseProgram(FullScreenShader::Gaussian17TapVShader::Program);
glBindVertexArray(FullScreenShader::Gaussian17TapVShader::vao);
glUniform2f(FullScreenShader::Gaussian17TapVShader::uniform_pixel, inv_width, inv_height);
setTexture(0, auxiliary.getRTT()[0], GL_LINEAR, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glUniform1i(FullScreenShader::Gaussian17TapVShader::uniform_tex, 0);
glDrawArrays(GL_TRIANGLES, 0, 3);
}
#if WIN32
else
{
glUseProgram(FullScreenShader::ComputeGaussian17TapVShader::Program);
glBindImageTexture(0, auxiliary.getRTT()[0], 0, false, 0, GL_READ_ONLY, GL_R16F);
glBindImageTexture(1, in_fbo.getRTT()[0], 0, false, 0, GL_WRITE_ONLY, GL_R16F);
glUniform1i(FullScreenShader::ComputeGaussian17TapVShader::uniform_source, 0);
glUniform1i(FullScreenShader::ComputeGaussian17TapVShader::uniform_dest, 1);
glDispatchCompute(in_fbo.getWidth() / 8, in_fbo.getHeight() / 8, 1);
}
#endif
}
}
void PostProcessing::renderPassThrough(GLuint tex)
{
glUseProgram(FullScreenShader::PassThroughShader::Program);
glBindVertexArray(FullScreenShader::PassThroughShader::vao);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glUniform1i(FullScreenShader::PassThroughShader::uniform_texture, 0);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
void PostProcessing::renderTextureLayer(unsigned tex, unsigned layer)
{
glUseProgram(FullScreenShader::LayerPassThroughShader::Program);
glBindVertexArray(FullScreenShader::LayerPassThroughShader::vao);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D_ARRAY, tex);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glUniform1i(FullScreenShader::LayerPassThroughShader::uniform_texture, 0);
glUniform1i(FullScreenShader::LayerPassThroughShader::uniform_layer, layer);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
void PostProcessing::renderGlow(unsigned tex)
{
glUseProgram(FullScreenShader::GlowShader::Program);
glBindVertexArray(FullScreenShader::GlowShader::vao);
setTexture(0, tex, GL_LINEAR, GL_LINEAR);
glUniform1i(FullScreenShader::GlowShader::uniform_tex, 0);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
ITexture *noise_tex = 0;
void PostProcessing::renderSSAO()
{
glDisable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
glDisable(GL_ALPHA_TEST);
// Generate linear depth buffer
irr_driver->getFBO(FBO_LINEAR_DEPTH).Bind();
glUseProgram(FullScreenShader::LinearizeDepthShader::Program);
glBindVertexArray(FullScreenShader::LinearizeDepthShader::vao);
setTexture(0, irr_driver->getDepthStencilTexture(), GL_LINEAR, GL_LINEAR);
FullScreenShader::LinearizeDepthShader::setUniforms(irr_driver->getSceneManager()->getActiveCamera()->getNearValue(), irr_driver->getSceneManager()->getActiveCamera()->getFarValue(), 0);
glDrawArrays(GL_TRIANGLES, 0, 3);
irr_driver->getFBO(FBO_SSAO).Bind();
if (!noise_tex)
noise_tex = irr_driver->getTexture(file_manager->getAsset("textures/noise.png").c_str());
glUseProgram(FullScreenShader::SSAOShader::Program);
glBindVertexArray(FullScreenShader::SSAOShader::vao);
setTexture(0, irr_driver->getRenderTargetTexture(RTT_LINEAR_DEPTH), GL_LINEAR, GL_LINEAR_MIPMAP_NEAREST);
glGenerateMipmap(GL_TEXTURE_2D);
setTexture(1, getTextureGLuint(noise_tex), GL_LINEAR, GL_LINEAR);
FullScreenShader::SSAOShader::setUniforms(core::vector2df(float(UserConfigParams::m_width),
float(UserConfigParams::m_height)),
0, 1);
glDrawArrays(GL_TRIANGLES, 0, 3);
}
void PostProcessing::renderFog()
{
const Track * const track = World::getWorld()->getTrack();
// This function is only called once per frame - thus no need for setters.
const float fogmax = track->getFogMax();
const float startH = track->getFogStartHeight();
const float endH = track->getFogEndHeight();
const float start = track->getFogStart();
const float end = track->getFogEnd();
const SColor tmpcol = track->getFogColor();
core::vector3df col( tmpcol.getRed() / 255.0f,
tmpcol.getGreen() / 255.0f,
tmpcol.getBlue() / 255.0f );
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glUseProgram(FullScreenShader::FogShader::Program);
glBindVertexArray(FullScreenShader::FogShader::vao);
setTexture(0, irr_driver->getDepthStencilTexture(), GL_NEAREST, GL_NEAREST);
FullScreenShader::FogShader::setUniforms(fogmax, startH, endH, start, end, col, 0);
glDrawArrays(GL_TRIANGLES, 0, 3);
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glEnable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
}
void PostProcessing::renderMotionBlur(unsigned cam, FrameBuffer &in_fbo, FrameBuffer &out_fbo)
{
MotionBlurProvider * const cb = (MotionBlurProvider *)irr_driver->
getCallback(ES_MOTIONBLUR);
scene::ICameraSceneNode * const camnode =
Camera::getCamera(cam)->getCameraSceneNode();
// Calculate the kart's Y position on screen
const core::vector3df pos =
Camera::getCamera(cam)->getKart()->getNode()->getPosition();
float ndc[4];
core::matrix4 trans = camnode->getProjectionMatrix();
trans *= camnode->getViewMatrix();
trans.transformVect(ndc, pos);
const float karty = (ndc[1] / ndc[3]) * 0.5f + 0.5f;
setMotionBlurCenterY(cam, karty);
out_fbo.Bind();
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(FullScreenShader::MotionBlurShader::Program);
glBindVertexArray(FullScreenShader::MotionBlurShader::vao);
setTexture(0, in_fbo.getRTT()[0], GL_NEAREST, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
FullScreenShader::MotionBlurShader
::setUniforms(cb->getBoostTime(cam), cb->getCenter(cam),
cb->getDirection(cam), 0.15f,
cb->getMaxHeight(cam) * 0.7f, 0);
glDrawArrays(GL_TRIANGLES, 0, 3);
}
static void renderGodFade(GLuint tex, const SColor &col)
{
glUseProgram(FullScreenShader::GodFadeShader::Program);
glBindVertexArray(FullScreenShader::GodFadeShader::vao);
setTexture(0, tex, GL_LINEAR, GL_LINEAR);
FullScreenShader::GodFadeShader::setUniforms(col, 0);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
static void renderGodRay(GLuint tex, const core::vector2df &sunpos)
{
glUseProgram(FullScreenShader::GodRayShader::Program);
glBindVertexArray(FullScreenShader::GodRayShader::vao);
setTexture(0, tex, GL_LINEAR, GL_LINEAR);
FullScreenShader::GodRayShader::setUniforms(sunpos, 0);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
static void toneMap(FrameBuffer &fbo, GLuint rtt)
{
fbo.Bind();
glUseProgram(FullScreenShader::ToneMapShader::Program);
glBindVertexArray(FullScreenShader::ToneMapShader::vao);
setTexture(0, rtt, GL_NEAREST, GL_NEAREST);
setTexture(1, irr_driver->getRenderTargetTexture(RTT_LOG_LUMINANCE), GL_NEAREST, GL_NEAREST_MIPMAP_NEAREST);
FullScreenShader::ToneMapShader::setUniforms(irr_driver->getExposure(), irr_driver->getLwhite(), 0, 1);
glDrawArrays(GL_TRIANGLES, 0, 3);
}
static void renderDoF(FrameBuffer &fbo, GLuint rtt)
{
fbo.Bind();
glUseProgram(FullScreenShader::DepthOfFieldShader::Program);
glBindVertexArray(FullScreenShader::DepthOfFieldShader::vao);
setTexture(0, rtt, GL_LINEAR, GL_LINEAR);
setTexture(1, irr_driver->getDepthStencilTexture(), GL_NEAREST, GL_NEAREST);
FullScreenShader::DepthOfFieldShader::setUniforms(0, 1);
glDrawArrays(GL_TRIANGLES, 0, 3);
}
static void averageTexture(GLuint tex)
{
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, tex);
glGenerateMipmap(GL_TEXTURE_2D);
}
void PostProcessing::applyMLAA()
{
const core::vector2df &PIXEL_SIZE = core::vector2df(1.0f / UserConfigParams::m_width, 1.0f / UserConfigParams::m_height);
IVideoDriver *const drv = irr_driver->getVideoDriver();
irr_driver->getFBO(FBO_MLAA_TMP).Bind();
glEnable(GL_STENCIL_TEST);
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_STENCIL_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
glStencilFunc(GL_ALWAYS, 1, ~0);
glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
// Pass 1: color edge detection
setTexture(0, irr_driver->getRenderTargetTexture(RTT_MLAA_COLORS), GL_NEAREST, GL_NEAREST);
glUseProgram(FullScreenShader::MLAAColorEdgeDetectionSHader::Program);
FullScreenShader::MLAAColorEdgeDetectionSHader::setUniforms(PIXEL_SIZE, 0);
glBindVertexArray(FullScreenShader::MLAAColorEdgeDetectionSHader::vao);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glStencilFunc(GL_EQUAL, 1, ~0);
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
// Pass 2: blend weights
irr_driver->getFBO(FBO_MLAA_BLEND).Bind();
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(FullScreenShader::MLAABlendWeightSHader::Program);
setTexture(0, irr_driver->getRenderTargetTexture(RTT_MLAA_TMP), GL_LINEAR, GL_LINEAR);
setTexture(1, getTextureGLuint(m_areamap), GL_NEAREST, GL_NEAREST);
FullScreenShader::MLAABlendWeightSHader::setUniforms(PIXEL_SIZE, 0, 1);
glBindVertexArray(FullScreenShader::MLAABlendWeightSHader::vao);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
// Blit in to tmp1
FrameBuffer::Blit(irr_driver->getFBO(FBO_MLAA_COLORS), irr_driver->getFBO(FBO_MLAA_TMP));
// Pass 3: gather
irr_driver->getFBO(FBO_MLAA_COLORS).Bind();
glUseProgram(FullScreenShader::MLAAGatherSHader::Program);
setTexture(0, irr_driver->getRenderTargetTexture(RTT_MLAA_TMP), GL_NEAREST, GL_NEAREST);
setTexture(1, irr_driver->getRenderTargetTexture(RTT_MLAA_BLEND), GL_NEAREST, GL_NEAREST);
FullScreenShader::MLAAGatherSHader::setUniforms(PIXEL_SIZE, 0, 1);
glBindVertexArray(FullScreenShader::MLAAGatherSHader::vao);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
// Done.
glDisable(GL_STENCIL_TEST);
}
// ----------------------------------------------------------------------------
/** Render the post-processed scene */
FrameBuffer *PostProcessing::render(scene::ICameraSceneNode * const camnode)
{
IVideoDriver * const drv = irr_driver->getVideoDriver();
MotionBlurProvider * const mocb = (MotionBlurProvider *) irr_driver->
getCallback(ES_MOTIONBLUR);
GaussianBlurProvider * const gacb = (GaussianBlurProvider *) irr_driver->
getCallback(ES_GAUSSIAN3H);
FrameBuffer *in_fbo = &irr_driver->getFBO(FBO_COLORS);
FrameBuffer *out_fbo = &irr_driver->getFBO(FBO_TMP1_WITH_DS);
// Each effect uses these as named, and sets them up for the next effect.
// This allows chaining effects where some may be disabled.
// As the original color shouldn't be touched, the first effect can't be disabled.
glDisable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
if (UserConfigParams::m_dof)
{
PROFILER_PUSH_CPU_MARKER("- DoF", 0xFF, 0x00, 0x00);
ScopedGPUTimer Timer(irr_driver->getGPUTimer(Q_DOF));
renderDoF(*out_fbo, in_fbo->getRTT()[0]);
std::swap(in_fbo, out_fbo);
PROFILER_POP_CPU_MARKER();
}
{
PROFILER_PUSH_CPU_MARKER("- Godrays", 0xFF, 0x00, 0x00);
ScopedGPUTimer Timer(irr_driver->getGPUTimer(Q_GODRAYS));
bool hasgodrays = false;
if (World::getWorld() != NULL)
hasgodrays = World::getWorld()->getTrack()->hasGodRays();
if (UserConfigParams::m_light_shaft && m_sunpixels > 30 && hasgodrays)
{
glEnable(GL_DEPTH_TEST);
// Grab the sky
out_fbo->Bind();
glClear(GL_COLOR_BUFFER_BIT);
irr_driver->renderSkybox(camnode);
// Set the sun's color
const SColor col = World::getWorld()->getTrack()->getSunColor();
ColorizeProvider * const colcb = (ColorizeProvider *)irr_driver->getCallback(ES_COLORIZE);
colcb->setColor(col.getRed() / 255.0f, col.getGreen() / 255.0f, col.getBlue() / 255.0f);
// The sun interposer
STKMeshSceneNode *sun = irr_driver->getSunInterposer();
irr_driver->getSceneManager()->drawAll(ESNRP_CAMERA);
irr_driver->setPhase(GLOW_PASS);
sun->render();
glDisable(GL_DEPTH_TEST);
// Fade to quarter
irr_driver->getFBO(FBO_QUARTER1).Bind();
glViewport(0, 0, UserConfigParams::m_width / 4, UserConfigParams::m_height / 4);
renderGodFade(out_fbo->getRTT()[0], col);
// Blur
renderGaussian3Blur(irr_driver->getFBO(FBO_QUARTER1), irr_driver->getFBO(FBO_QUARTER2));
// Calculate the sun's position in texcoords
const core::vector3df pos = sun->getPosition();
float ndc[4];
core::matrix4 trans = camnode->getProjectionMatrix();
trans *= camnode->getViewMatrix();
trans.transformVect(ndc, pos);
const float texh = m_vertices[0].v1.TCoords.Y - m_vertices[0].v0.TCoords.Y;
const float texw = m_vertices[0].v3.TCoords.X - m_vertices[0].v0.TCoords.X;
const float sunx = ((ndc[0] / ndc[3]) * 0.5f + 0.5f) * texw;
const float suny = ((ndc[1] / ndc[3]) * 0.5f + 0.5f) * texh;
// Rays please
irr_driver->getFBO(FBO_QUARTER2).Bind();
renderGodRay(irr_driver->getRenderTargetTexture(RTT_QUARTER1), core::vector2df(sunx, suny));
// Blur
renderGaussian3Blur(irr_driver->getFBO(FBO_QUARTER2), irr_driver->getFBO(FBO_QUARTER1));
// Blend
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE);
glBlendEquation(GL_FUNC_ADD);
in_fbo->Bind();
renderPassThrough(irr_driver->getRenderTargetTexture(RTT_QUARTER2));
glDisable(GL_BLEND);
}
PROFILER_POP_CPU_MARKER();
}
// Simulate camera defects from there
{
PROFILER_PUSH_CPU_MARKER("- Bloom", 0xFF, 0x00, 0x00);
ScopedGPUTimer Timer(irr_driver->getGPUTimer(Q_BLOOM));
if (UserConfigParams::m_bloom)
{
glClear(GL_STENCIL_BUFFER_BIT);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE);
FrameBuffer::Blit(*in_fbo, irr_driver->getFBO(FBO_BLOOM_1024), GL_COLOR_BUFFER_BIT, GL_LINEAR);
irr_driver->getFBO(FBO_BLOOM_512).Bind();
renderBloom(irr_driver->getRenderTargetTexture(RTT_BLOOM_1024));
// Downsample
FrameBuffer::Blit(irr_driver->getFBO(FBO_BLOOM_512), irr_driver->getFBO(FBO_BLOOM_256), GL_COLOR_BUFFER_BIT, GL_LINEAR);
FrameBuffer::Blit(irr_driver->getFBO(FBO_BLOOM_256), irr_driver->getFBO(FBO_BLOOM_128), GL_COLOR_BUFFER_BIT, GL_LINEAR);
// Blur
renderGaussian6Blur(irr_driver->getFBO(FBO_BLOOM_512), irr_driver->getFBO(FBO_TMP_512));
renderGaussian6Blur(irr_driver->getFBO(FBO_BLOOM_256), irr_driver->getFBO(FBO_TMP_256));
renderGaussian6Blur(irr_driver->getFBO(FBO_BLOOM_128), irr_driver->getFBO(FBO_TMP_128));
// Additively blend on top of tmp1
in_fbo->Bind();
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE);
glBlendEquation(GL_FUNC_ADD);
setTexture(0, irr_driver->getRenderTargetTexture(RTT_BLOOM_128), GL_LINEAR, GL_LINEAR);
setTexture(1, irr_driver->getRenderTargetTexture(RTT_BLOOM_256), GL_LINEAR, GL_LINEAR);
setTexture(2, irr_driver->getRenderTargetTexture(RTT_BLOOM_512), GL_LINEAR, GL_LINEAR);
glUseProgram(FullScreenShader::BloomBlendShader::Program);
FullScreenShader::BloomBlendShader::setUniforms(0, 1, 2);
glBindVertexArray(FullScreenShader::BloomBlendShader::vao);
glDrawArrays(GL_TRIANGLES, 0, 3);
glDisable(GL_BLEND);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
} // end if bloom
PROFILER_POP_CPU_MARKER();
}
//computeLogLuminance(in_rtt);
{
PROFILER_PUSH_CPU_MARKER("- Tonemap", 0xFF, 0x00, 0x00);
ScopedGPUTimer Timer(irr_driver->getGPUTimer(Q_TONEMAP));
toneMap(*out_fbo, in_fbo->getRTT()[0]);
std::swap(in_fbo, out_fbo);
PROFILER_POP_CPU_MARKER();
}
{
PROFILER_PUSH_CPU_MARKER("- Motion blur", 0xFF, 0x00, 0x00);
ScopedGPUTimer Timer(irr_driver->getGPUTimer(Q_MOTIONBLUR));
if (UserConfigParams::m_motionblur && m_any_boost && World::getWorld() != NULL) // motion blur
{
renderMotionBlur(0, *in_fbo, *out_fbo);
std::swap(in_fbo, out_fbo);
}
PROFILER_POP_CPU_MARKER();
}
glEnable(GL_FRAMEBUFFER_SRGB);
irr_driver->getFBO(FBO_MLAA_COLORS).Bind();
renderPassThrough(in_fbo->getRTT()[0]);
out_fbo = &irr_driver->getFBO(FBO_MLAA_COLORS);
if (UserConfigParams::m_mlaa) // MLAA. Must be the last pp filter.
{
PROFILER_PUSH_CPU_MARKER("- MLAA", 0xFF, 0x00, 0x00);
ScopedGPUTimer Timer(irr_driver->getGPUTimer(Q_MLAA));
applyMLAA();
PROFILER_POP_CPU_MARKER();
}
glDisable(GL_FRAMEBUFFER_SRGB);
return out_fbo;
} // render