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Merge branch 'ssao' of https://github.com/dpjudas/dpDoom

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This commit is contained in:
Christoph Oelckers 2016-12-22 12:40:57 +01:00
commit a825d1d92f
31 changed files with 1385 additions and 215 deletions
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1
src/CMakeLists.txt
View file

@ -963,6 +963,7 @@ set( FASTMATH_SOURCES
gl/shaders/gl_presentshader.cpp
gl/shaders/gl_present3dRowshader.cpp
gl/shaders/gl_bloomshader.cpp
gl/shaders/gl_ambientshader.cpp
gl/shaders/gl_blurshader.cpp
gl/shaders/gl_colormapshader.cpp
gl/shaders/gl_tonemapshader.cpp

212
src/gl/renderer/gl_postprocess.cpp
View file

@ -54,6 +54,7 @@
#include "gl/renderer/gl_postprocessstate.h"
#include "gl/data/gl_data.h"
#include "gl/data/gl_vertexbuffer.h"
#include "gl/shaders/gl_ambientshader.h"
#include "gl/shaders/gl_bloomshader.h"
#include "gl/shaders/gl_blurshader.h"
#include "gl/shaders/gl_tonemapshader.h"
@ -106,6 +107,32 @@ CUSTOM_CVAR(Int, gl_fxaa, 0, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
}
}
CUSTOM_CVAR(Int, gl_ssao, 0, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
{
if (self < 0 || self > 3)
self = 0;
}
CUSTOM_CVAR(Int, gl_ssao_portals, 0, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
{
if (self < 0)
self = 0;
}
CVAR(Float, gl_ssao_strength, 0.7, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
CVAR(Int, gl_ssao_debug, 0, 0)
CVAR(Float, gl_ssao_bias, 0.2f, 0)
CVAR(Float, gl_ssao_radius, 80.0f, 0)
CUSTOM_CVAR(Float, gl_ssao_blur, 16.0f, 0)
{
if (self < 0.1f) self = 0.1f;
}
CUSTOM_CVAR(Float, gl_ssao_exponent, 1.8f, 0)
{
if (self < 0.1f) self = 0.1f;
}
EXTERN_CVAR(Float, vid_brightness)
EXTERN_CVAR(Float, vid_contrast)
@ -117,6 +144,153 @@ void FGLRenderer::RenderScreenQuad()
GLRenderer->mVBO->RenderArray(GL_TRIANGLE_STRIP, FFlatVertexBuffer::PRESENT_INDEX, 4);
}
void FGLRenderer::PostProcessScene()
{
mBuffers->BlitSceneToTexture();
UpdateCameraExposure();
BloomScene();
TonemapScene();
ColormapScene();
LensDistortScene();
ApplyFXAA();
}
//-----------------------------------------------------------------------------
//
// Adds ambient occlusion to the scene
//
//-----------------------------------------------------------------------------
void FGLRenderer::AmbientOccludeScene()
{
FGLDebug::PushGroup("AmbientOccludeScene");
FGLPostProcessState savedState;
savedState.SaveTextureBindings(3);
float bias = gl_ssao_bias;
float aoRadius = gl_ssao_radius;
const float blurAmount = gl_ssao_blur;
float aoStrength = gl_ssao_strength;
//float tanHalfFovy = tan(fovy * (M_PI / 360.0f));
float tanHalfFovy = 1.0f / gl_RenderState.mProjectionMatrix.get()[5];
float invFocalLenX = tanHalfFovy * (mBuffers->GetSceneWidth() / (float)mBuffers->GetSceneHeight());
float invFocalLenY = tanHalfFovy;
float nDotVBias = clamp(bias, 0.0f, 1.0f);
float r2 = aoRadius * aoRadius;
float blurSharpness = 1.0f / blurAmount;
float sceneScaleX = mSceneViewport.width / (float)mScreenViewport.width;
float sceneScaleY = mSceneViewport.height / (float)mScreenViewport.height;
float sceneOffsetX = mSceneViewport.left / (float)mScreenViewport.width;
float sceneOffsetY = mSceneViewport.top / (float)mScreenViewport.height;
int randomTexture = clamp(gl_ssao - 1, 0, FGLRenderBuffers::NumAmbientRandomTextures - 1);
// Calculate linear depth values
glBindFramebuffer(GL_FRAMEBUFFER, mBuffers->LinearDepthFB);
glViewport(0, 0, mBuffers->AmbientWidth, mBuffers->AmbientHeight);
mBuffers->BindSceneDepthTexture(0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
mBuffers->BindSceneColorTexture(1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glActiveTexture(GL_TEXTURE0);
mLinearDepthShader->Bind();
mLinearDepthShader->DepthTexture.Set(0);
mLinearDepthShader->ColorTexture.Set(1);
if (gl_multisample > 1) mLinearDepthShader->SampleIndex.Set(0);
mLinearDepthShader->LinearizeDepthA.Set(1.0f / GetZFar() - 1.0f / GetZNear());
mLinearDepthShader->LinearizeDepthB.Set(MAX(1.0f / GetZNear(), 1.e-8f));
mLinearDepthShader->InverseDepthRangeA.Set(1.0f);
mLinearDepthShader->InverseDepthRangeB.Set(0.0f);
mLinearDepthShader->Scale.Set(sceneScaleX, sceneScaleY);
mLinearDepthShader->Offset.Set(sceneOffsetX, sceneOffsetY);
RenderScreenQuad();
// Apply ambient occlusion
glBindFramebuffer(GL_FRAMEBUFFER, mBuffers->AmbientFB1);
glBindTexture(GL_TEXTURE_2D, mBuffers->LinearDepthTexture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, mBuffers->AmbientRandomTexture[randomTexture]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
mBuffers->BindSceneNormalTexture(2);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glActiveTexture(GL_TEXTURE0);
mSSAOShader->Bind();
mSSAOShader->DepthTexture.Set(0);
mSSAOShader->RandomTexture.Set(1);
mSSAOShader->NormalTexture.Set(2);
if (gl_multisample > 1) mSSAOShader->SampleIndex.Set(0);
mSSAOShader->UVToViewA.Set(2.0f * invFocalLenX, 2.0f * invFocalLenY);
mSSAOShader->UVToViewB.Set(-invFocalLenX, -invFocalLenY);
mSSAOShader->InvFullResolution.Set(1.0f / mBuffers->AmbientWidth, 1.0f / mBuffers->AmbientHeight);
mSSAOShader->NDotVBias.Set(nDotVBias);
mSSAOShader->NegInvR2.Set(-1.0f / r2);
mSSAOShader->RadiusToScreen.Set(aoRadius * 0.5 / tanHalfFovy * mBuffers->AmbientHeight);
mSSAOShader->AOMultiplier.Set(1.0f / (1.0f - nDotVBias));
mSSAOShader->AOStrength.Set(aoStrength);
mSSAOShader->Scale.Set(sceneScaleX, sceneScaleY);
mSSAOShader->Offset.Set(sceneOffsetX, sceneOffsetY);
RenderScreenQuad();
// Blur SSAO texture
if (gl_ssao_debug < 2)
{
glBindFramebuffer(GL_FRAMEBUFFER, mBuffers->AmbientFB0);
glBindTexture(GL_TEXTURE_2D, mBuffers->AmbientTexture1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
mDepthBlurShader->Bind(false);
mDepthBlurShader->BlurSharpness[false].Set(blurSharpness);
mDepthBlurShader->InvFullResolution[false].Set(1.0f / mBuffers->AmbientWidth, 1.0f / mBuffers->AmbientHeight);
RenderScreenQuad();
glBindFramebuffer(GL_FRAMEBUFFER, mBuffers->AmbientFB1);
glBindTexture(GL_TEXTURE_2D, mBuffers->AmbientTexture0);
mDepthBlurShader->Bind(true);
mDepthBlurShader->BlurSharpness[true].Set(blurSharpness);
mDepthBlurShader->InvFullResolution[true].Set(1.0f / mBuffers->AmbientWidth, 1.0f / mBuffers->AmbientHeight);
mDepthBlurShader->PowExponent[true].Set(gl_ssao_exponent);
RenderScreenQuad();
}
// Add SSAO back to scene texture:
mBuffers->BindSceneFB(false);
glViewport(mSceneViewport.left, mSceneViewport.top, mSceneViewport.width, mSceneViewport.height);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
if (gl_ssao_debug != 0)
{
glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
}
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, mBuffers->AmbientTexture1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
mBuffers->BindSceneFogTexture(1);
mSSAOCombineShader->Bind();
mSSAOCombineShader->AODepthTexture.Set(0);
mSSAOCombineShader->SceneFogTexture.Set(1);
if (gl_multisample > 1) mSSAOCombineShader->SampleCount.Set(gl_multisample);
mSSAOCombineShader->Scale.Set(sceneScaleX, sceneScaleY);
mSSAOCombineShader->Offset.Set(sceneOffsetX, sceneOffsetY);
RenderScreenQuad();
FGLDebug::PopGroup();
}
//-----------------------------------------------------------------------------
//
// Extracts light average from the scene and updates the camera exposure texture
@ -131,7 +305,7 @@ void FGLRenderer::UpdateCameraExposure()
FGLDebug::PushGroup("UpdateCameraExposure");
FGLPostProcessState savedState;
savedState.SaveTextureBinding1();
savedState.SaveTextureBindings(2);
// Extract light level from scene texture:
const auto &level0 = mBuffers->ExposureLevels[0];
@ -198,13 +372,13 @@ void FGLRenderer::UpdateCameraExposure()
void FGLRenderer::BloomScene()
{
// Only bloom things if enabled and no special fixed light mode is active
if (!gl_bloom || gl_fixedcolormap != CM_DEFAULT)
if (!gl_bloom || gl_fixedcolormap != CM_DEFAULT || gl_ssao_debug)
return;
FGLDebug::PushGroup("BloomScene");
FGLPostProcessState savedState;
savedState.SaveTextureBinding1();
savedState.SaveTextureBindings(2);
const float blurAmount = gl_bloom_amount;
int sampleCount = gl_bloom_kernel_size;
@ -293,7 +467,10 @@ void FGLRenderer::TonemapScene()
FGLDebug::PushGroup("TonemapScene");
CreateTonemapPalette();
FGLPostProcessState savedState;
savedState.SaveTextureBindings(2);
mBuffers->BindNextFB();
mBuffers->BindCurrentTexture(0);
@ -302,12 +479,18 @@ void FGLRenderer::TonemapScene()
if (mTonemapShader->IsPaletteMode())
{
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, mTonemapPalette->GetTextureHandle(0));
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, 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);
glActiveTexture(GL_TEXTURE0);
mTonemapShader->PaletteLUT.Set(1);
BindTonemapPalette(1);
}
else
{
savedState.SaveTextureBinding1();
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, mBuffers->ExposureTexture);
glActiveTexture(GL_TEXTURE0);
@ -321,13 +504,9 @@ void FGLRenderer::TonemapScene()
FGLDebug::PopGroup();
}
void FGLRenderer::BindTonemapPalette(int texunit)
void FGLRenderer::CreateTonemapPalette()
{
if (mTonemapPalette)
{
mTonemapPalette->Bind(texunit, 0, false);
}
else
if (!mTonemapPalette)
{
TArray<unsigned char> lut;
lut.Resize(512 * 512 * 4);
@ -348,14 +527,7 @@ void FGLRenderer::BindTonemapPalette(int texunit)
}
mTonemapPalette = new FHardwareTexture(512, 512, true);
mTonemapPalette->CreateTexture(&lut[0], 512, 512, texunit, false, 0, "mTonemapPalette");
glActiveTexture(GL_TEXTURE0 + texunit);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, 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);
glActiveTexture(GL_TEXTURE0);
mTonemapPalette->CreateTexture(&lut[0], 512, 512, 0, false, 0, "mTonemapPalette");
}
}
@ -425,7 +597,7 @@ void FGLRenderer::LensDistortScene()
0.0f
};
float aspect = mSceneViewport.width / mSceneViewport.height;
float aspect = mSceneViewport.width / (float)mSceneViewport.height;
// Scale factor to keep sampling within the input texture
float r2 = aspect * aspect * 0.25 + 0.25f;

53
src/gl/renderer/gl_postprocessstate.cpp
View file

@ -45,17 +45,7 @@ FGLPostProcessState::FGLPostProcessState()
{
glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTex);
glActiveTexture(GL_TEXTURE0);
glGetIntegerv(GL_TEXTURE_BINDING_2D, &textureBinding[0]);
glBindTexture(GL_TEXTURE_2D, 0);
if (gl.flags & RFL_SAMPLER_OBJECTS)
{
glGetIntegerv(GL_SAMPLER_BINDING, &samplerBinding[0]);
glBindSampler(0, 0);
glActiveTexture(GL_TEXTURE0 + 1);
glGetIntegerv(GL_SAMPLER_BINDING, &samplerBinding[1]);
glBindSampler(1, 0);
glActiveTexture(GL_TEXTURE0);
}
SaveTextureBindings(1);
glGetBooleanv(GL_BLEND, &blendEnabled);
glGetBooleanv(GL_SCISSOR_TEST, &scissorEnabled);
@ -75,12 +65,26 @@ FGLPostProcessState::FGLPostProcessState()
glDisable(GL_BLEND);
}
void FGLPostProcessState::SaveTextureBinding1()
void FGLPostProcessState::SaveTextureBindings(unsigned int numUnits)
{
glActiveTexture(GL_TEXTURE1);
glGetIntegerv(GL_TEXTURE_BINDING_2D, &textureBinding[1]);
while (textureBinding.Size() < numUnits)
{
unsigned int i = textureBinding.Size();
GLint texture;
glActiveTexture(GL_TEXTURE0 + i);
glGetIntegerv(GL_TEXTURE_BINDING_2D, &texture);
glBindTexture(GL_TEXTURE_2D, 0);
textureBinding1Saved = true;
textureBinding.Push(texture);
if (gl.flags & RFL_SAMPLER_OBJECTS)
{
GLint sampler;
glGetIntegerv(GL_SAMPLER_BINDING, &sampler);
glBindSampler(i, 0);
samplerBinding.Push(sampler);
}
}
glActiveTexture(GL_TEXTURE0);
}
@ -117,25 +121,22 @@ FGLPostProcessState::~FGLPostProcessState()
glUseProgram(currentProgram);
if (textureBinding1Saved)
// Fully unbind to avoid incomplete texture warnings from Nvidia's driver when gl_debug_level 4 is active
for (unsigned int i = 0; i < textureBinding.Size(); i++)
{
glActiveTexture(GL_TEXTURE1);
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(GL_TEXTURE_2D, 0);
}
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, 0);
if (gl.flags & RFL_SAMPLER_OBJECTS)
for (unsigned int i = 0; i < samplerBinding.Size(); i++)
{
glBindSampler(0, samplerBinding[0]);
glBindSampler(1, samplerBinding[1]);
glBindSampler(i, samplerBinding[i]);
}
glBindTexture(GL_TEXTURE_2D, textureBinding[0]);
if (textureBinding1Saved)
for (unsigned int i = 0; i < textureBinding.Size(); i++)
{
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, textureBinding[1]);
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(GL_TEXTURE_2D, textureBinding[i]);
}
glActiveTexture(activeTex);

7
src/gl/renderer/gl_postprocessstate.h
View file

@ -14,15 +14,15 @@ public:
FGLPostProcessState();
~FGLPostProcessState();
void SaveTextureBinding1();
void SaveTextureBindings(unsigned int numUnits);
private:
FGLPostProcessState(const FGLPostProcessState &) = delete;
FGLPostProcessState &operator=(const FGLPostProcessState &) = delete;
GLint activeTex;
GLint textureBinding[2];
GLint samplerBinding[2];
TArray<GLint> textureBinding;
TArray<GLint> samplerBinding;
GLboolean blendEnabled;
GLboolean scissorEnabled;
GLboolean depthEnabled;
@ -34,7 +34,6 @@ private:
GLint blendSrcAlpha;
GLint blendDestRgb;
GLint blendDestAlpha;
bool textureBinding1Saved = false;
};
#endif

280
src/gl/renderer/gl_renderbuffers.cpp
View file

@ -40,6 +40,7 @@
#include "w_wad.h"
#include "i_system.h"
#include "doomerrors.h"
#include <random>
CVAR(Int, gl_multisample, 1, CVAR_ARCHIVE|CVAR_GLOBALCONFIG);
CVAR(Bool, gl_renderbuffers, true, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
@ -58,6 +59,11 @@ FGLRenderBuffers::FGLRenderBuffers()
mPipelineFB[i] = 0;
}
for (int i = 0; i < NumAmbientRandomTextures; i++)
{
AmbientRandomTexture[i] = 0;
}
glGetIntegerv(GL_FRAMEBUFFER_BINDING, (GLint*)&mOutputFB);
glGetIntegerv(GL_MAX_SAMPLES, &mMaxSamples);
}
@ -75,15 +81,27 @@ FGLRenderBuffers::~FGLRenderBuffers()
ClearEyeBuffers();
ClearBloom();
ClearExposureLevels();
ClearAmbientOcclusion();
}
void FGLRenderBuffers::ClearScene()
{
DeleteFrameBuffer(mSceneFB);
DeleteFrameBuffer(mSceneDataFB);
if (mSceneUsesTextures)
{
DeleteTexture(mSceneMultisample);
DeleteTexture(mSceneFog);
DeleteTexture(mSceneNormal);
DeleteTexture(mSceneDepthStencil);
}
else
{
DeleteRenderBuffer(mSceneMultisample);
DeleteRenderBuffer(mSceneFog);
DeleteRenderBuffer(mSceneNormal);
DeleteRenderBuffer(mSceneDepthStencil);
DeleteRenderBuffer(mSceneDepth);
DeleteRenderBuffer(mSceneStencil);
}
}
void FGLRenderBuffers::ClearPipeline()
@ -132,6 +150,18 @@ void FGLRenderBuffers::ClearEyeBuffers()
mEyeFBs.Clear();
}
void FGLRenderBuffers::ClearAmbientOcclusion()
{
DeleteFrameBuffer(LinearDepthFB);
DeleteFrameBuffer(AmbientFB0);
DeleteFrameBuffer(AmbientFB1);
DeleteTexture(LinearDepthTexture);
DeleteTexture(AmbientTexture0);
DeleteTexture(AmbientTexture1);
for (int i = 0; i < NumAmbientRandomTextures; i++)
DeleteTexture(AmbientRandomTexture[i]);
}
void FGLRenderBuffers::DeleteTexture(GLuint &handle)
{
if (handle != 0)
@ -177,6 +207,7 @@ bool FGLRenderBuffers::Setup(int width, int height, int sceneWidth, int sceneHei
I_FatalError("Requested invalid render buffer sizes: screen = %dx%d", width, height);
int samples = clamp((int)gl_multisample, 0, mMaxSamples);
bool needsSceneTextures = (gl_ssao != 0);
GLint activeTex;
GLint textureBinding;
@ -184,25 +215,23 @@ bool FGLRenderBuffers::Setup(int width, int height, int sceneWidth, int sceneHei
glActiveTexture(GL_TEXTURE0);
glGetIntegerv(GL_TEXTURE_BINDING_2D, &textureBinding);
if (width == mWidth && height == mHeight && mSamples != samples)
{
CreateScene(mWidth, mHeight, samples);
mSamples = samples;
}
else if (width != mWidth || height != mHeight)
{
if (width != mWidth || height != mHeight)
CreatePipeline(width, height);
CreateScene(width, height, samples);
if (width != mWidth || height != mHeight || mSamples != samples || mSceneUsesTextures != needsSceneTextures)
CreateScene(width, height, samples, needsSceneTextures);
mWidth = width;
mHeight = height;
mSamples = samples;
}
mSceneUsesTextures = needsSceneTextures;
// Bloom bluring buffers need to match the scene to avoid bloom bleeding artifacts
if (mSceneWidth != sceneWidth || mSceneHeight != sceneHeight)
{
CreateBloom(sceneWidth, sceneHeight);
CreateExposureLevels(sceneWidth, sceneHeight);
CreateAmbientOcclusion(sceneWidth, sceneHeight);
mSceneWidth = sceneWidth;
mSceneHeight = sceneHeight;
}
@ -235,15 +264,46 @@ bool FGLRenderBuffers::Setup(int width, int height, int sceneWidth, int sceneHei
//
//==========================================================================
void FGLRenderBuffers::CreateScene(int width, int height, int samples)
void FGLRenderBuffers::CreateScene(int width, int height, int samples, bool needsSceneTextures)
{
ClearScene();
if (samples > 1)
mSceneMultisample = CreateRenderBuffer("SceneMultisample", GL_RGBA16F, samples, width, height);
mSceneDepthStencil = CreateRenderBuffer("SceneDepthStencil", GL_DEPTH24_STENCIL8, samples, width, height);
mSceneFB = CreateFrameBuffer("SceneFB", samples > 1 ? mSceneMultisample : mPipelineTexture[0], mSceneDepthStencil, samples > 1);
{
if (needsSceneTextures)
{
mSceneMultisample = Create2DMultisampleTexture("SceneMultisample", GL_RGBA16F, width, height, samples, false);
mSceneDepthStencil = Create2DMultisampleTexture("SceneDepthStencil", GL_DEPTH24_STENCIL8, width, height, samples, false);
mSceneFog = Create2DMultisampleTexture("SceneFog", GL_RGBA8, width, height, samples, false);
mSceneNormal = Create2DMultisampleTexture("SceneNormal", GL_RGB10_A2, width, height, samples, false);
mSceneFB = CreateFrameBuffer("SceneFB", mSceneMultisample, 0, 0, mSceneDepthStencil, true);
mSceneDataFB = CreateFrameBuffer("SceneGBufferFB", mSceneMultisample, mSceneFog, mSceneNormal, mSceneDepthStencil, true);
}
else
{
mSceneMultisample = CreateRenderBuffer("SceneMultisample", GL_RGBA16F, width, height, samples);
mSceneDepthStencil = CreateRenderBuffer("SceneDepthStencil", GL_DEPTH24_STENCIL8, width, height, samples);
mSceneFB = CreateFrameBuffer("SceneFB", mSceneMultisample, mSceneDepthStencil, true);
mSceneDataFB = CreateFrameBuffer("SceneGBufferFB", mSceneMultisample, mSceneDepthStencil, true);
}
}
else
{
if (needsSceneTextures)
{
mSceneDepthStencil = Create2DTexture("SceneDepthStencil", GL_DEPTH24_STENCIL8, width, height);
mSceneFog = Create2DTexture("SceneFog", GL_RGBA8, width, height);
mSceneNormal = Create2DTexture("SceneNormal", GL_RGB10_A2, width, height);
mSceneFB = CreateFrameBuffer("SceneFB", mPipelineTexture[0], 0, 0, mSceneDepthStencil, false);
mSceneDataFB = CreateFrameBuffer("SceneGBufferFB", mPipelineTexture[0], mSceneFog, mSceneNormal, mSceneDepthStencil, false);
}
else
{
mSceneDepthStencil = CreateRenderBuffer("SceneDepthStencil", GL_DEPTH24_STENCIL8, width, height);
mSceneFB = CreateFrameBuffer("SceneFB", mPipelineTexture[0], mSceneDepthStencil, false);
mSceneDataFB = CreateFrameBuffer("SceneGBufferFB", mPipelineTexture[0], mSceneDepthStencil, false);
}
}
}
//==========================================================================
@ -278,13 +338,13 @@ void FGLRenderBuffers::CreateBloom(int width, int height)
if (width <= 0 || height <= 0)
return;
int bloomWidth = MAX(width / 2, 1);
int bloomHeight = MAX(height / 2, 1);
int bloomWidth = (width + 1) / 2;
int bloomHeight = (height + 1) / 2;
for (int i = 0; i < NumBloomLevels; i++)
{
auto &level = BloomLevels[i];
level.Width = MAX(bloomWidth / 2, 1);
level.Height = MAX(bloomHeight / 2, 1);
level.Width = (bloomWidth + 1) / 2;
level.Height = (bloomHeight + 1) / 2;
level.VTexture = Create2DTexture("Bloom.VTexture", GL_RGBA16F, level.Width, level.Height);
level.HTexture = Create2DTexture("Bloom.HTexture", GL_RGBA16F, level.Width, level.Height);
@ -296,6 +356,55 @@ void FGLRenderBuffers::CreateBloom(int width, int height)
}
}
//==========================================================================
//
// Creates ambient occlusion working buffers
//
//==========================================================================
void FGLRenderBuffers::CreateAmbientOcclusion(int width, int height)
{
ClearAmbientOcclusion();
if (width <= 0 || height <= 0)
return;
AmbientWidth = (width + 1) / 2;
AmbientHeight = (height + 1) / 2;
LinearDepthTexture = Create2DTexture("LinearDepthTexture", GL_R32F, AmbientWidth, AmbientHeight);
AmbientTexture0 = Create2DTexture("AmbientTexture0", GL_RG16F, AmbientWidth, AmbientHeight);
AmbientTexture1 = Create2DTexture("AmbientTexture1", GL_RG16F, AmbientWidth, AmbientHeight);
LinearDepthFB = CreateFrameBuffer("LinearDepthFB", LinearDepthTexture);
AmbientFB0 = CreateFrameBuffer("AmbientFB0", AmbientTexture0);
AmbientFB1 = CreateFrameBuffer("AmbientFB1", AmbientTexture1);
// Must match quality enum in FSSAOShader::GetDefines
double numDirections[NumAmbientRandomTextures] = { 2.0, 4.0, 8.0 };
std::mt19937 generator(1337);
std::uniform_real_distribution<double> distribution(0.0, 1.0);
for (int quality = 0; quality < NumAmbientRandomTextures; quality++)
{
int16_t randomValues[16 * 4];
for (int i = 0; i < 16; i++)
{
double angle = 2.0 * M_PI * distribution(generator) / numDirections[quality];
double x = cos(angle);
double y = sin(angle);
double z = distribution(generator);
double w = distribution(generator);
randomValues[i * 4 + 0] = (int16_t)clamp(x * 32767.0, -32768.0, 32767.0);
randomValues[i * 4 + 1] = (int16_t)clamp(y * 32767.0, -32768.0, 32767.0);
randomValues[i * 4 + 2] = (int16_t)clamp(z * 32767.0, -32768.0, 32767.0);
randomValues[i * 4 + 3] = (int16_t)clamp(w * 32767.0, -32768.0, 32767.0);
}
AmbientRandomTexture[quality] = Create2DTexture("AmbientRandomTexture", GL_RGBA16_SNORM, 4, 4, randomValues);
}
}
//==========================================================================
//
// Creates camera exposure level buffers
@ -368,12 +477,31 @@ void FGLRenderBuffers::CreateEyeBuffers(int eye)
GLuint FGLRenderBuffers::Create2DTexture(const FString &name, GLuint format, int width, int height, const void *data)
{
GLuint type = (format == GL_RGBA16F || format == GL_R32F) ? GL_FLOAT : GL_UNSIGNED_BYTE;
GLuint handle = 0;
glGenTextures(1, &handle);
glBindTexture(GL_TEXTURE_2D, handle);
FGLDebug::LabelObject(GL_TEXTURE, handle, name);
glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format != GL_R32F ? GL_RGBA : GL_RED, type, data);
GLenum dataformat, datatype;
switch (format)
{
case GL_RGBA8: dataformat = GL_RGBA; datatype = GL_UNSIGNED_BYTE; break;
case GL_RGBA16: dataformat = GL_RGBA; datatype = GL_UNSIGNED_SHORT; break;
case GL_RGBA16F: dataformat = GL_RGBA; datatype = GL_FLOAT; break;
case GL_RGBA32F: dataformat = GL_RGBA; datatype = GL_FLOAT; break;
case GL_RGBA16_SNORM: dataformat = GL_RGBA; datatype = GL_SHORT; break;
case GL_R32F: dataformat = GL_RED; datatype = GL_FLOAT; break;
case GL_R16F: dataformat = GL_RED; datatype = GL_FLOAT; break;
case GL_RG32F: dataformat = GL_RG; datatype = GL_FLOAT; break;
case GL_RG16F: dataformat = GL_RG; datatype = GL_FLOAT; break;
case GL_RGB10_A2: dataformat = GL_RGBA; datatype = GL_UNSIGNED_INT_10_10_10_2; break;
case GL_DEPTH_COMPONENT24: dataformat = GL_DEPTH_COMPONENT; datatype = GL_FLOAT; break;
case GL_STENCIL_INDEX8: dataformat = GL_STENCIL_INDEX; datatype = GL_INT; break;
case GL_DEPTH24_STENCIL8: dataformat = GL_DEPTH_STENCIL; datatype = GL_UNSIGNED_INT_24_8; break;
default: I_FatalError("Unknown format passed to FGLRenderBuffers.Create2DTexture");
}
glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, dataformat, datatype, data);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
@ -381,6 +509,17 @@ GLuint FGLRenderBuffers::Create2DTexture(const FString &name, GLuint format, int
return handle;
}
GLuint FGLRenderBuffers::Create2DMultisampleTexture(const FString &name, GLuint format, int width, int height, int samples, bool fixedSampleLocations)
{
GLuint handle = 0;
glGenTextures(1, &handle);
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, handle);
FGLDebug::LabelObject(GL_TEXTURE, handle, name);
glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, samples, format, width, height, fixedSampleLocations);
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, 0);
return handle;
}
//==========================================================================
//
// Creates a render buffer
@ -397,7 +536,7 @@ GLuint FGLRenderBuffers::CreateRenderBuffer(const FString &name, GLuint format,
return handle;
}
GLuint FGLRenderBuffers::CreateRenderBuffer(const FString &name, GLuint format, int samples, int width, int height)
GLuint FGLRenderBuffers::CreateRenderBuffer(const FString &name, GLuint format, int width, int height, int samples)
{
if (samples <= 1)
return CreateRenderBuffer(name, format, width, height);
@ -444,18 +583,30 @@ GLuint FGLRenderBuffers::CreateFrameBuffer(const FString &name, GLuint colorbuff
return handle;
}
GLuint FGLRenderBuffers::CreateFrameBuffer(const FString &name, GLuint colorbuffer, GLuint depth, GLuint stencil, bool colorIsARenderBuffer)
GLuint FGLRenderBuffers::CreateFrameBuffer(const FString &name, GLuint colorbuffer0, GLuint colorbuffer1, GLuint colorbuffer2, GLuint depthstencil, bool multisample)
{
GLuint handle = 0;
glGenFramebuffers(1, &handle);
glBindFramebuffer(GL_FRAMEBUFFER, handle);
FGLDebug::LabelObject(GL_FRAMEBUFFER, handle, name);
if (colorIsARenderBuffer)
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, colorbuffer);
if (multisample)
{
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D_MULTISAMPLE, colorbuffer0, 0);
if (colorbuffer1 != 0)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D_MULTISAMPLE, colorbuffer1, 0);
if (colorbuffer2 != 0)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D_MULTISAMPLE, colorbuffer2, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D_MULTISAMPLE, depthstencil, 0);
}
else
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorbuffer, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depth);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, stencil);
{
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorbuffer0, 0);
if (colorbuffer1 != 0)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, colorbuffer1, 0);
if (colorbuffer2 != 0)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D, colorbuffer2, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, depthstencil, 0);
}
if (CheckFrameBufferCompleteness())
ClearFrameBuffer(true, true);
return handle;
@ -475,7 +626,8 @@ bool FGLRenderBuffers::CheckFrameBufferCompleteness()
FailedCreate = true;
#if 0
if (gl_debug_level > 0)
{
FString error = "glCheckFramebufferStatus failed: ";
switch (result)
{
@ -489,8 +641,8 @@ bool FGLRenderBuffers::CheckFrameBufferCompleteness()
case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE: error << "GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE"; break;
case GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS: error << "GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS"; break;
}
I_FatalError(error);
#endif
Printf("%s\n", error.GetChars());
}
return false;
}
@ -595,9 +747,69 @@ void FGLRenderBuffers::BindEyeFB(int eye, bool readBuffer)
//
//==========================================================================
void FGLRenderBuffers::BindSceneFB()
void FGLRenderBuffers::BindSceneFB(bool sceneData)
{
glBindFramebuffer(GL_FRAMEBUFFER, mSceneFB);
glBindFramebuffer(GL_FRAMEBUFFER, sceneData ? mSceneDataFB : mSceneFB);
}
//==========================================================================
//
// Binds the scene color texture to the specified texture unit
//
//==========================================================================
void FGLRenderBuffers::BindSceneColorTexture(int index)
{
glActiveTexture(GL_TEXTURE0 + index);
if (mSamples > 1)
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, mSceneMultisample);
else
glBindTexture(GL_TEXTURE_2D, mPipelineTexture[0]);
}
//==========================================================================
//
// Binds the scene fog data texture to the specified texture unit
//
//==========================================================================
void FGLRenderBuffers::BindSceneFogTexture(int index)
{
glActiveTexture(GL_TEXTURE0 + index);
if (mSamples > 1)
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, mSceneFog);
else
glBindTexture(GL_TEXTURE_2D, mSceneFog);
}
//==========================================================================
//
// Binds the scene normal data texture to the specified texture unit
//
//==========================================================================
void FGLRenderBuffers::BindSceneNormalTexture(int index)
{
glActiveTexture(GL_TEXTURE0 + index);
if (mSamples > 1)
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, mSceneNormal);
else
glBindTexture(GL_TEXTURE_2D, mSceneNormal);
}
//==========================================================================
//
// Binds the depth texture to the specified texture unit
//
//==========================================================================
void FGLRenderBuffers::BindSceneDepthTexture(int index)
{
glActiveTexture(GL_TEXTURE0 + index);
if (mSamples > 1)
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, mSceneDepthStencil);
else
glBindTexture(GL_TEXTURE_2D, mSceneDepthStencil);
}
//==========================================================================

36
src/gl/renderer/gl_renderbuffers.h
View file

@ -31,7 +31,11 @@ public:
bool Setup(int width, int height, int sceneWidth, int sceneHeight);
void BindSceneFB();
void BindSceneFB(bool sceneData);
void BindSceneColorTexture(int index);
void BindSceneFogTexture(int index);
void BindSceneNormalTexture(int index);
void BindSceneDepthTexture(int index);
void BlitSceneToTexture();
void BindCurrentTexture(int index);
@ -53,28 +57,46 @@ public:
GLuint ExposureFB = 0;
bool FirstExposureFrame = true;
// Ambient occlusion buffers
GLuint LinearDepthTexture = 0;
GLuint LinearDepthFB = 0;
GLuint AmbientTexture0 = 0;
GLuint AmbientTexture1 = 0;
GLuint AmbientFB0 = 0;
GLuint AmbientFB1 = 0;
int AmbientWidth = 0;
int AmbientHeight = 0;
enum { NumAmbientRandomTextures = 3 };
GLuint AmbientRandomTexture[NumAmbientRandomTextures];
static bool IsEnabled();
int GetWidth() const { return mWidth; }
int GetHeight() const { return mHeight; }
int GetSceneWidth() const { return mSceneWidth; }
int GetSceneHeight() const { return mSceneHeight; }
private:
void ClearScene();
void ClearPipeline();
void ClearEyeBuffers();
void ClearBloom();
void ClearExposureLevels();
void CreateScene(int width, int height, int samples);
void ClearAmbientOcclusion();
void CreateScene(int width, int height, int samples, bool needsSceneTextures);
void CreatePipeline(int width, int height);
void CreateBloom(int width, int height);
void CreateExposureLevels(int width, int height);
void CreateEyeBuffers(int eye);
void CreateAmbientOcclusion(int width, int height);
GLuint Create2DTexture(const FString &name, GLuint format, int width, int height, const void *data = nullptr);
GLuint Create2DMultisampleTexture(const FString &name, GLuint format, int width, int height, int samples, bool fixedSampleLocations);
GLuint CreateRenderBuffer(const FString &name, GLuint format, int width, int height);
GLuint CreateRenderBuffer(const FString &name, GLuint format, int samples, int width, int height);
GLuint CreateRenderBuffer(const FString &name, GLuint format, int width, int height, int samples);
GLuint CreateFrameBuffer(const FString &name, GLuint colorbuffer);
GLuint CreateFrameBuffer(const FString &name, GLuint colorbuffer, GLuint depthstencil, bool colorIsARenderBuffer);
GLuint CreateFrameBuffer(const FString &name, GLuint colorbuffer, GLuint depth, GLuint stencil, bool colorIsARenderBuffer);
GLuint CreateFrameBuffer(const FString &name, GLuint colorbuffer0, GLuint colorbuffer1, GLuint colorbuffer2, GLuint depthstencil, bool multisample);
bool CheckFrameBufferCompleteness();
void ClearFrameBuffer(bool stencil, bool depth);
void DeleteTexture(GLuint &handle);
@ -94,9 +116,11 @@ private:
// Buffers for the scene
GLuint mSceneMultisample = 0;
GLuint mSceneDepthStencil = 0;
GLuint mSceneDepth = 0;
GLuint mSceneStencil = 0;
GLuint mSceneFog = 0;
GLuint mSceneNormal = 0;
GLuint mSceneFB = 0;
GLuint mSceneDataFB = 0;
bool mSceneUsesTextures = false;
// Effect/HUD buffers
GLuint mPipelineTexture[NumPipelineTextures];

15
src/gl/renderer/gl_renderer.cpp
View file

@ -51,6 +51,7 @@
#include "gl/data/gl_vertexbuffer.h"
#include "gl/scene/gl_drawinfo.h"
#include "gl/shaders/gl_shader.h"
#include "gl/shaders/gl_ambientshader.h"
#include "gl/shaders/gl_bloomshader.h"
#include "gl/shaders/gl_blurshader.h"
#include "gl/shaders/gl_tonemapshader.h"
@ -118,6 +119,10 @@ FGLRenderer::FGLRenderer(OpenGLFrameBuffer *fb)
mTonemapPalette = nullptr;
mColormapShader = nullptr;
mLensShader = nullptr;
mLinearDepthShader = nullptr;
mDepthBlurShader = nullptr;
mSSAOShader = nullptr;
mSSAOCombineShader = nullptr;
mFXAAShader = nullptr;
mFXAALumaShader = nullptr;
}
@ -128,6 +133,10 @@ void gl_FlushModels();
void FGLRenderer::Initialize(int width, int height)
{
mBuffers = new FGLRenderBuffers();
mLinearDepthShader = new FLinearDepthShader();
mDepthBlurShader = new FDepthBlurShader();
mSSAOShader = new FSSAOShader();
mSSAOCombineShader = new FSSAOCombineShader();
mBloomExtractShader = new FBloomExtractShader();
mBloomCombineShader = new FBloomCombineShader();
mExposureExtractShader = new FExposureExtractShader();
@ -196,6 +205,10 @@ FGLRenderer::~FGLRenderer()
}
if (mBuffers) delete mBuffers;
if (mPresentShader) delete mPresentShader;
if (mLinearDepthShader) delete mLinearDepthShader;
if (mDepthBlurShader) delete mDepthBlurShader;
if (mSSAOShader) delete mSSAOShader;
if (mSSAOCombineShader) delete mSSAOCombineShader;
if (mPresent3dCheckerShader) delete mPresent3dCheckerShader;
if (mPresent3dColumnShader) delete mPresent3dColumnShader;
if (mPresent3dRowShader) delete mPresent3dRowShader;
@ -327,7 +340,7 @@ void FGLRenderer::Begin2D()
if (mBuffers->Setup(mScreenViewport.width, mScreenViewport.height, mSceneViewport.width, mSceneViewport.height))
{
if (mDrawingScene2D)
mBuffers->BindSceneFB();
mBuffers->BindSceneFB(false);
else
mBuffers->BindCurrentFB();
}

15
src/gl/renderer/gl_renderer.h
View file

@ -19,6 +19,10 @@ class FLightBuffer;
class FSamplerManager;
class DPSprite;
class FGLRenderBuffers;
class FLinearDepthShader;
class FDepthBlurShader;
class FSSAOShader;
class FSSAOCombineShader;
class FBloomExtractShader;
class FBloomCombineShader;
class FExposureExtractShader;
@ -98,6 +102,10 @@ public:
int mOldFBID;
FGLRenderBuffers *mBuffers;
FLinearDepthShader *mLinearDepthShader;
FSSAOShader *mSSAOShader;
FDepthBlurShader *mDepthBlurShader;
FSSAOCombineShader *mSSAOCombineShader;
FBloomExtractShader *mBloomExtractShader;
FBloomCombineShader *mBloomCombineShader;
FExposureExtractShader *mExposureExtractShader;
@ -182,10 +190,12 @@ public:
void WriteSavePic (player_t *player, FileWriter *file, int width, int height);
void EndDrawScene(sector_t * viewsector);
void UpdateCameraExposure();
void PostProcessScene();
void AmbientOccludeScene();
void BloomScene();
void TonemapScene();
void ColormapScene();
void BindTonemapPalette(int texunit);
void CreateTonemapPalette();
void ClearTonemapPalette();
void LensDistortScene();
void ApplyFXAA();
@ -209,6 +219,9 @@ public:
DAngle rotation, FDynamicColormap *colormap, int lightlevel, int bottomclip);
int PTM_BestColor (const uint32 *pal_in, int r, int g, int b, int first, int num);
static float GetZNear() { return 5.f; }
static float GetZFar() { return 65536.f; }
};
// Global functions. Make them members of GLRenderer later?

7
src/gl/renderer/gl_renderstate.cpp
View file

@ -105,6 +105,7 @@ void FRenderState::Reset()
mViewMatrix.loadIdentity();
mModelMatrix.loadIdentity();
mTextureMatrix.loadIdentity();
mPassType = NORMAL_PASS;
}
//==========================================================================
@ -118,11 +119,11 @@ bool FRenderState::ApplyShader()
static const float nulvec[] = { 0.f, 0.f, 0.f, 0.f };
if (mSpecialEffect > EFF_NONE)
{
activeShader = GLRenderer->mShaderManager->BindEffect(mSpecialEffect);
activeShader = GLRenderer->mShaderManager->BindEffect(mSpecialEffect, mPassType);
}
else
{
activeShader = GLRenderer->mShaderManager->Get(mTextureEnabled ? mEffectState : 4, mAlphaThreshold >= 0.f);
activeShader = GLRenderer->mShaderManager->Get(mTextureEnabled ? mEffectState : 4, mAlphaThreshold >= 0.f, mPassType);
activeShader->Bind();
}
@ -347,7 +348,7 @@ void FRenderState::ApplyMatrices()
{
if (GLRenderer->mShaderManager != NULL)
{
GLRenderer->mShaderManager->ApplyMatrices(&mProjectionMatrix, &mViewMatrix);
GLRenderer->mShaderManager->ApplyMatrices(&mProjectionMatrix, &mViewMatrix, mPassType);
}
}

36
src/gl/renderer/gl_renderstate.h
View file

@ -63,6 +63,13 @@ enum EEffect
MAX_EFFECTS
};
enum EPassType
{
NORMAL_PASS,
GBUFFER_PASS,
MAX_PASS_TYPES
};
class FRenderState
{
bool mTextureEnabled;
@ -112,6 +119,9 @@ class FRenderState
FShader *activeShader;
EPassType mPassType = NORMAL_PASS;
int mNumDrawBuffers = 1;
bool ApplyShader();
public:
@ -472,6 +482,32 @@ public:
return mInterpolationFactor;
}
void SetPassType(EPassType passType)
{
mPassType = passType;
}
EPassType GetPassType()
{
return mPassType;
}
void EnableDrawBuffers(int count)
{
count = MIN(count, 3);
if (mNumDrawBuffers != count)
{
static GLenum buffers[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
glDrawBuffers(count, buffers);
mNumDrawBuffers = count;
}
}
int GetPassDrawBufferCount()
{
return mPassType == GBUFFER_PASS ? 3 : 1;
}
// Backwards compatibility crap follows
void ApplyFixedFunction();
void DrawColormapOverlay();

2
src/gl/scene/gl_decal.cpp
View file

@ -316,6 +316,8 @@ void GLWall::DrawDecal(DBaseDecal *decal)
gl_RenderState.SetFog(0,-1);
}
gl_RenderState.SetNormal(glseg.Normal());
FQuadDrawer qd;
for (i = 0; i < 4; i++)
{

8
src/gl/scene/gl_portal.cpp
View file

@ -423,14 +423,16 @@ void GLPortal::End(bool usestencil)
glDepthFunc(GL_LEQUAL);
glDepthRange(0, 1);
{
ScopedColorMask colorMask(0, 0, 0, 0);
// glColorMask(0,0,0,0); // no graphics
ScopedColorMask colorMask(0, 0, 0, 1); // mark portal in alpha channel but don't touch color
gl_RenderState.SetEffect(EFF_STENCIL);
gl_RenderState.EnableTexture(false);
gl_RenderState.BlendFunc(GL_ONE, GL_ZERO);
gl_RenderState.BlendEquation(GL_FUNC_ADD);
gl_RenderState.Apply();
DrawPortalStencil();
gl_RenderState.SetEffect(EFF_NONE);
gl_RenderState.EnableTexture(true);
} // glColorMask(1, 1, 1, 1);
}
glDepthFunc(GL_LESS);
}
PortalAll.Unclock();

43
src/gl/scene/gl_scene.cpp
View file

@ -158,7 +158,11 @@ void FGLRenderer::Set3DViewport(bool mainview)
{
if (mainview && mBuffers->Setup(mScreenViewport.width, mScreenViewport.height, mSceneViewport.width, mSceneViewport.height))
{
mBuffers->BindSceneFB();
bool useSSAO = (gl_ssao != 0);
mBuffers->BindSceneFB(useSSAO);
gl_RenderState.SetPassType(useSSAO ? GBUFFER_PASS : NORMAL_PASS);
gl_RenderState.EnableDrawBuffers(gl_RenderState.GetPassDrawBufferCount());
gl_RenderState.Apply();
}
// Always clear all buffers with scissor test disabled.
@ -209,7 +213,7 @@ void FGLRenderer::SetProjection(float fov, float ratio, float fovratio)
{
float fovy = 2 * RAD2DEG(atan(tan(DEG2RAD(fov) / 2) / fovratio));
gl_RenderState.mProjectionMatrix.perspective(fovy, ratio, 5.f, 65536.f);
gl_RenderState.mProjectionMatrix.perspective(fovy, ratio, GetZNear(), GetZFar());
}
// raw matrix input from stereo 3d modes
@ -472,6 +476,23 @@ void FGLRenderer::RenderTranslucent()
void FGLRenderer::DrawScene(int drawmode)
{
static int recursion=0;
static int ssao_portals_available = 0;
bool applySSAO = false;
if (drawmode == DM_MAINVIEW)
{
ssao_portals_available = gl_ssao_portals;
applySSAO = true;
}
else if (drawmode == DM_OFFSCREEN)
{
ssao_portals_available = 0;
}
else if (ssao_portals_available > 0)
{
applySSAO = true;
ssao_portals_available--;
}
if (camera != nullptr)
{
@ -491,6 +512,16 @@ void FGLRenderer::DrawScene(int drawmode)
RenderScene(recursion);
if (applySSAO && gl_RenderState.GetPassType() == GBUFFER_PASS)
{
gl_RenderState.EnableDrawBuffers(1);
AmbientOccludeScene();
mBuffers->BindSceneFB(true);
gl_RenderState.EnableDrawBuffers(gl_RenderState.GetPassDrawBufferCount());
gl_RenderState.Apply();
gl_RenderState.ApplyMatrices();
}
// Handle all portals after rendering the opaque objects but before
// doing all translucent stuff
recursion++;
@ -830,13 +861,7 @@ sector_t * FGLRenderer::RenderViewpoint (AActor * camera, GL_IRECT * bounds, flo
if (mainview && toscreen) EndDrawScene(lviewsector); // do not call this for camera textures.
if (mainview && FGLRenderBuffers::IsEnabled())
{
mBuffers->BlitSceneToTexture();
UpdateCameraExposure();
BloomScene();
TonemapScene();
ColormapScene();
LensDistortScene();
ApplyFXAA();
PostProcessScene();
// This should be done after postprocessing, not before.
mBuffers->BindCurrentFB();

2
src/gl/scene/gl_walls_draw.cpp
View file

@ -228,6 +228,7 @@ void GLWall::RenderFogBoundary()
{
int rel = rellight + getExtraLight();
gl_SetFog(lightlevel, rel, &Colormap, false);
gl_RenderState.EnableDrawBuffers(1);
gl_RenderState.SetEffect(EFF_FOGBOUNDARY);
gl_RenderState.AlphaFunc(GL_GEQUAL, 0.f);
glEnable(GL_POLYGON_OFFSET_FILL);
@ -236,6 +237,7 @@ void GLWall::RenderFogBoundary()
glPolygonOffset(0.0f, 0.0f);
glDisable(GL_POLYGON_OFFSET_FILL);
gl_RenderState.SetEffect(EFF_NONE);
gl_RenderState.EnableDrawBuffers(gl_RenderState.GetPassDrawBufferCount());
}
else
{

160
src/gl/shaders/gl_ambientshader.cpp Normal file
View file

@ -0,0 +1,160 @@
//
//---------------------------------------------------------------------------
//
// Copyright(C) 2016 Magnus Norddahl
// All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see http://www.gnu.org/licenses/
//
//--------------------------------------------------------------------------
//
#include "gl/system/gl_system.h"
#include "files.h"
#include "m_swap.h"
#include "v_video.h"
#include "gl/gl_functions.h"
#include "vectors.h"
#include "gl/system/gl_interface.h"
#include "gl/system/gl_framebuffer.h"
#include "gl/system/gl_cvars.h"
#include "gl/shaders/gl_ambientshader.h"
void FLinearDepthShader::Bind()
{
bool multisample = (gl_multisample > 1);
if (mMultisample != multisample)
mShader.reset();
if (!mShader)
{
mShader = std::make_unique<FShaderProgram>();
mShader->Compile(FShaderProgram::Vertex, "shaders/glsl/screenquad.vp", "", 330);
mShader->Compile(FShaderProgram::Fragment, "shaders/glsl/lineardepth.fp", multisample ? "#define MULTISAMPLE\n" : "", 330);
mShader->SetFragDataLocation(0, "FragColor");
mShader->Link("shaders/glsl/lineardepth");
mShader->SetAttribLocation(0, "PositionInProjection");
DepthTexture.Init(*mShader, "DepthTexture");
ColorTexture.Init(*mShader, "ColorTexture");
SampleIndex.Init(*mShader, "SampleIndex");
LinearizeDepthA.Init(*mShader, "LinearizeDepthA");
LinearizeDepthB.Init(*mShader, "LinearizeDepthB");
InverseDepthRangeA.Init(*mShader, "InverseDepthRangeA");
InverseDepthRangeB.Init(*mShader, "InverseDepthRangeB");
Scale.Init(*mShader, "Scale");
Offset.Init(*mShader, "Offset");
mMultisample = multisample;
}
mShader->Bind();
}
void FSSAOShader::Bind()
{
bool multisample = (gl_multisample > 1);
if (mCurrentQuality != gl_ssao || mMultisample != multisample)
mShader.reset();
if (!mShader)
{
mShader = std::make_unique<FShaderProgram>();
mShader->Compile(FShaderProgram::Vertex, "shaders/glsl/screenquad.vp", "", 330);
mShader->Compile(FShaderProgram::Fragment, "shaders/glsl/ssao.fp", GetDefines(gl_ssao, multisample), 330);
mShader->SetFragDataLocation(0, "FragColor");
mShader->Link("shaders/glsl/ssao");
mShader->SetAttribLocation(0, "PositionInProjection");
DepthTexture.Init(*mShader, "DepthTexture");
NormalTexture.Init(*mShader, "NormalTexture");
RandomTexture.Init(*mShader, "RandomTexture");
UVToViewA.Init(*mShader, "UVToViewA");
UVToViewB.Init(*mShader, "UVToViewB");
InvFullResolution.Init(*mShader, "InvFullResolution");
NDotVBias.Init(*mShader, "NDotVBias");
NegInvR2.Init(*mShader, "NegInvR2");
RadiusToScreen.Init(*mShader, "RadiusToScreen");
AOMultiplier.Init(*mShader, "AOMultiplier");
AOStrength.Init(*mShader, "AOStrength");
Scale.Init(*mShader, "Scale");
Offset.Init(*mShader, "Offset");
SampleIndex.Init(*mShader, "SampleIndex");
mMultisample = multisample;
}
mShader->Bind();
}
FString FSSAOShader::GetDefines(int mode, bool multisample)
{
// Must match quality values in FGLRenderBuffers::CreateAmbientOcclusion
int numDirections, numSteps;
switch (gl_ssao)
{
default:
case LowQuality: numDirections = 2; numSteps = 4; break;
case MediumQuality: numDirections = 4; numSteps = 4; break;
case HighQuality: numDirections = 8; numSteps = 4; break;
}
FString defines;
defines.Format(R"(
#define USE_RANDOM_TEXTURE
#define RANDOM_TEXTURE_WIDTH 4.0
#define NUM_DIRECTIONS %d.0
#define NUM_STEPS %d.0
)", numDirections, numSteps);
if (multisample)
defines += "\n#define MULTISAMPLE\n";
return defines;
}
void FDepthBlurShader::Bind(bool vertical)
{
auto &shader = mShader[vertical];
if (!shader)
{
shader.Compile(FShaderProgram::Vertex, "shaders/glsl/screenquad.vp", "", 330);
shader.Compile(FShaderProgram::Fragment, "shaders/glsl/depthblur.fp", vertical ? "#define BLUR_VERTICAL\n" : "#define BLUR_HORIZONTAL\n", 330);
shader.SetFragDataLocation(0, "FragColor");
shader.Link("shaders/glsl/depthblur");
shader.SetAttribLocation(0, "PositionInProjection");
AODepthTexture[vertical].Init(shader, "AODepthTexture");
BlurSharpness[vertical].Init(shader, "BlurSharpness");
InvFullResolution[vertical].Init(shader, "InvFullResolution");
PowExponent[vertical].Init(shader, "PowExponent");
}
shader.Bind();
}
void FSSAOCombineShader::Bind()
{
bool multisample = (gl_multisample > 1);
if (mMultisample != multisample)
mShader.reset();
if (!mShader)
{
mShader = std::make_unique<FShaderProgram>();
mShader->Compile(FShaderProgram::Vertex, "shaders/glsl/screenquad.vp", "", 330);
mShader->Compile(FShaderProgram::Fragment, "shaders/glsl/ssaocombine.fp", multisample ? "#define MULTISAMPLE\n" : "", 330);
mShader->SetFragDataLocation(0, "FragColor");
mShader->Link("shaders/glsl/ssaocombine");
mShader->SetAttribLocation(0, "PositionInProjection");
AODepthTexture.Init(*mShader, "AODepthTexture");
SceneFogTexture.Init(*mShader, "SceneFogTexture");
SampleCount.Init(*mShader, "SampleCount");
Scale.Init(*mShader, "Scale");
Offset.Init(*mShader, "Offset");
mMultisample = multisample;
}
mShader->Bind();
}

93
src/gl/shaders/gl_ambientshader.h Normal file
View file

@ -0,0 +1,93 @@
#ifndef __GL_AMBIENTSHADER_H
#define __GL_AMBIENTSHADER_H
#include "gl_shaderprogram.h"
class FLinearDepthShader
{
public:
void Bind();
FBufferedUniformSampler DepthTexture;
FBufferedUniformSampler ColorTexture;
FBufferedUniform1i SampleIndex;
FBufferedUniform1f LinearizeDepthA;
FBufferedUniform1f LinearizeDepthB;
FBufferedUniform1f InverseDepthRangeA;
FBufferedUniform1f InverseDepthRangeB;
FBufferedUniform2f Scale;
FBufferedUniform2f Offset;
private:
std::unique_ptr<FShaderProgram> mShader;
bool mMultisample = false;
};
class FSSAOShader
{
public:
void Bind();
FBufferedUniformSampler DepthTexture;
FBufferedUniformSampler NormalTexture;
FBufferedUniformSampler RandomTexture;
FBufferedUniform2f UVToViewA;
FBufferedUniform2f UVToViewB;
FBufferedUniform2f InvFullResolution;
FBufferedUniform1f NDotVBias;
FBufferedUniform1f NegInvR2;
FBufferedUniform1f RadiusToScreen;
FBufferedUniform1f AOMultiplier;
FBufferedUniform1f AOStrength;
FBufferedUniform2f Scale;
FBufferedUniform2f Offset;
FBufferedUniform1i SampleIndex;
private:
enum Quality
{
Off,
LowQuality,
MediumQuality,
HighQuality,
NumQualityModes
};
FString GetDefines(int mode, bool multisample);
std::unique_ptr<FShaderProgram> mShader;
Quality mCurrentQuality = Off;
bool mMultisample = false;
};
class FDepthBlurShader
{
public:
void Bind(bool vertical);
FBufferedUniformSampler AODepthTexture[2];
FBufferedUniform1f BlurSharpness[2];
FBufferedUniform2f InvFullResolution[2];
FBufferedUniform1f PowExponent[2];
private:
FShaderProgram mShader[2];
};
class FSSAOCombineShader
{
public:
void Bind();
FBufferedUniformSampler AODepthTexture;
FBufferedUniformSampler SceneFogTexture;
FBufferedUniform1i SampleCount;
FBufferedUniform2f Scale;
FBufferedUniform2f Offset;
private:
std::unique_ptr<FShaderProgram> mShader;
bool mMultisample = false;
};
#endif

152
src/gl/shaders/gl_shader.cpp
View file

@ -181,6 +181,10 @@ bool FShader::Load(const char * name, const char * vert_prog_lump, const char *
glBindAttribLocation(hShader, VATTR_VERTEX2, "aVertex2");
glBindAttribLocation(hShader, VATTR_NORMAL, "aNormal");
glBindFragDataLocation(hShader, 0, "FragColor");
glBindFragDataLocation(hShader, 1, "FragFog");
glBindFragDataLocation(hShader, 2, "FragNormal");
glLinkProgram(hShader);
glGetShaderInfoLog(hVertProg, 10000, NULL, buffer);
@ -300,12 +304,13 @@ bool FShader::Bind()
//
//==========================================================================
FShader *FShaderManager::Compile (const char *ShaderName, const char *ShaderPath, bool usediscard)
FShader *FShaderCollection::Compile (const char *ShaderName, const char *ShaderPath, bool usediscard, EPassType passType)
{
FString defines;
// this can't be in the shader code due to ATI strangeness.
if (gl.MaxLights() == 128) defines += "#define MAXLIGHTS128\n";
if (!usediscard) defines += "#define NO_ALPHATEST\n";
if (passType == GBUFFER_PASS) defines += "#define GBUFFER_PASS\n";
FShader *shader = NULL;
try
@ -388,27 +393,75 @@ static const FEffectShader effectshaders[]=
{ "stencil", "shaders/glsl/main.vp", "shaders/glsl/stencil.fp", NULL, "#define SIMPLE\n#define NO_ALPHATEST\n" },
};
//==========================================================================
//
//
//
//==========================================================================
FShaderManager::FShaderManager()
{
if (!gl.legacyMode) CompileShaders();
if (!gl.legacyMode)
{
for (int passType = 0; passType < MAX_PASS_TYPES; passType++)
mPassShaders.Push(new FShaderCollection((EPassType)passType));
}
}
//==========================================================================
//
//
//
//==========================================================================
FShaderManager::~FShaderManager()
{
if (!gl.legacyMode) Clean();
if (!gl.legacyMode)
{
glUseProgram(0);
mActiveShader = NULL;
for (auto collection : mPassShaders)
delete collection;
}
}
void FShaderManager::SetActiveShader(FShader *sh)
{
if (mActiveShader != sh)
{
glUseProgram(sh!= NULL? sh->GetHandle() : 0);
mActiveShader = sh;
}
}
FShader *FShaderManager::BindEffect(int effect, EPassType passType)
{
if (passType < mPassShaders.Size())
return mPassShaders[passType]->BindEffect(effect);
else
return nullptr;
}
FShader *FShaderManager::Get(unsigned int eff, bool alphateston, EPassType passType)
{
if (passType < mPassShaders.Size())
return mPassShaders[passType]->Get(eff, alphateston);
else
return nullptr;
}
void FShaderManager::ApplyMatrices(VSMatrix *proj, VSMatrix *view, EPassType passType)
{
if (gl.legacyMode)
{
glMatrixMode(GL_PROJECTION);
glLoadMatrixf(proj->get());
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf(view->get());
}
else
{
if (passType < mPassShaders.Size())
mPassShaders[passType]->ApplyMatrices(proj, view);
if (mActiveShader)
mActiveShader->Bind();
}
}
void FShaderManager::ResetFixedColormap()
{
for (auto &collection : mPassShaders)
collection->ResetFixedColormap();
}
//==========================================================================
@ -417,10 +470,30 @@ FShaderManager::~FShaderManager()
//
//==========================================================================
void FShaderManager::CompileShaders()
FShaderCollection::FShaderCollection(EPassType passType)
{
mActiveShader = NULL;
CompileShaders(passType);
}
//==========================================================================
//
//
//
//==========================================================================
FShaderCollection::~FShaderCollection()
{
Clean();
}
//==========================================================================
//
//
//
//==========================================================================
void FShaderCollection::CompileShaders(EPassType passType)
{
mTextureEffects.Clear();
mTextureEffectsNAT.Clear();
for (int i = 0; i < MAX_EFFECTS; i++)
@ -430,11 +503,11 @@ void FShaderManager::CompileShaders()
for(int i=0;defaultshaders[i].ShaderName != NULL;i++)
{
FShader *shc = Compile(defaultshaders[i].ShaderName, defaultshaders[i].gettexelfunc, true);
FShader *shc = Compile(defaultshaders[i].ShaderName, defaultshaders[i].gettexelfunc, true, passType);
mTextureEffects.Push(shc);
if (i <= 3)
{
FShader *shc = Compile(defaultshaders[i].ShaderName, defaultshaders[i].gettexelfunc, false);
FShader *shc = Compile(defaultshaders[i].ShaderName, defaultshaders[i].gettexelfunc, false, passType);
mTextureEffectsNAT.Push(shc);
}
}
@ -444,7 +517,7 @@ void FShaderManager::CompileShaders()
FString name = ExtractFileBase(usershaders[i]);
FName sfn = name;
FShader *shc = Compile(sfn, usershaders[i], true);
FShader *shc = Compile(sfn, usershaders[i], true, passType);
mTextureEffects.Push(shc);
}
@ -466,11 +539,8 @@ void FShaderManager::CompileShaders()
//
//==========================================================================
void FShaderManager::Clean()
void FShaderCollection::Clean()
{
glUseProgram(0);
mActiveShader = NULL;
for (unsigned int i = 0; i < mTextureEffectsNAT.Size(); i++)
{
if (mTextureEffectsNAT[i] != NULL) delete mTextureEffectsNAT[i];
@ -494,7 +564,7 @@ void FShaderManager::Clean()
//
//==========================================================================
int FShaderManager::Find(const char * shn)
int FShaderCollection::Find(const char * shn)
{
FName sfn = shn;
@ -508,21 +578,6 @@ int FShaderManager::Find(const char * shn)
return -1;
}
//==========================================================================
//
//
//
//==========================================================================
void FShaderManager::SetActiveShader(FShader *sh)
{
if (mActiveShader != sh)
{
glUseProgram(sh!= NULL? sh->GetHandle() : 0);
mActiveShader = sh;
}
}
//==========================================================================
//
@ -530,7 +585,7 @@ void FShaderManager::SetActiveShader(FShader *sh)
//
//==========================================================================
FShader *FShaderManager::BindEffect(int effect)
FShader *FShaderCollection::BindEffect(int effect)
{
if (effect >= 0 && effect < MAX_EFFECTS && mEffectShaders[effect] != NULL)
{
@ -548,17 +603,8 @@ FShader *FShaderManager::BindEffect(int effect)
//==========================================================================
EXTERN_CVAR(Int, gl_fuzztype)
void FShaderManager::ApplyMatrices(VSMatrix *proj, VSMatrix *view)
void FShaderCollection::ApplyMatrices(VSMatrix *proj, VSMatrix *view)
{
if (gl.legacyMode)
{
glMatrixMode(GL_PROJECTION);
glLoadMatrixf(proj->get());
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf(view->get());
}
else
{
VSMatrix norm;
norm.computeNormalMatrix(*view);
@ -580,8 +626,6 @@ void FShaderManager::ApplyMatrices(VSMatrix *proj, VSMatrix *view)
{
mEffectShaders[i]->ApplyMatrices(proj, view, &norm);
}
if (mActiveShader != NULL) mActiveShader->Bind();
}
}
//==========================================================================

46
src/gl/shaders/gl_shader.h
View file

@ -37,6 +37,7 @@ enum
VATTR_NORMAL = 4
};
class FShaderCollection;
//==========================================================================
//
@ -248,7 +249,7 @@ public:
class FShader
{
friend class FShaderManager;
friend class FShaderCollection;
friend class FRenderState;
unsigned int hShader;
@ -324,7 +325,6 @@ public:
};
//==========================================================================
//
// The global shader manager
@ -332,26 +332,40 @@ public:
//==========================================================================
class FShaderManager
{
TArray<FShader*> mTextureEffects;
TArray<FShader*> mTextureEffectsNAT;
FShader *mActiveShader;
FShader *mEffectShaders[MAX_EFFECTS];
void Clean();
void CompileShaders();
public:
FShaderManager();
~FShaderManager();
FShader *Compile(const char *ShaderName, const char *ShaderPath, bool usediscard);
void SetActiveShader(FShader *sh);
FShader *GetActiveShader() const { return mActiveShader; }
FShader *BindEffect(int effect, EPassType passType);
FShader *Get(unsigned int eff, bool alphateston, EPassType passType);
void ApplyMatrices(VSMatrix *proj, VSMatrix *view, EPassType passType);
void ResetFixedColormap();
private:
FShader *mActiveShader = nullptr;
TArray<FShaderCollection*> mPassShaders;
};
class FShaderCollection
{
TArray<FShader*> mTextureEffects;
TArray<FShader*> mTextureEffectsNAT;
FShader *mEffectShaders[MAX_EFFECTS];
void Clean();
void CompileShaders(EPassType passType);
public:
FShaderCollection(EPassType passType);
~FShaderCollection();
FShader *Compile(const char *ShaderName, const char *ShaderPath, bool usediscard, EPassType passType);
int Find(const char *mame);
FShader *BindEffect(int effect);
void SetActiveShader(FShader *sh);
void ApplyMatrices(VSMatrix *proj, VSMatrix *view);
FShader *GetActiveShader() const
{
return mActiveShader;
}
void ResetFixedColormap()
{

2
src/gl/stereo3d/gl_stereo3d.cpp
View file

@ -41,7 +41,7 @@ VSMatrix EyePose::GetProjection(float fov, float aspectRatio, float fovRatio) co
// Lifted from gl_scene.cpp FGLRenderer::SetProjection()
float fovy = (float)(2 * RAD2DEG(atan(tan(DEG2RAD(fov) / 2) / fovRatio)));
result.perspective(fovy, aspectRatio, 5.f, 65536.f);
result.perspective(fovy, aspectRatio, FGLRenderer::GetZNear(), FGLRenderer::GetZFar());
return result;
}

2
src/gl/stereo3d/scoped_color_mask.h
View file

@ -41,8 +41,10 @@ public:
gl_RenderState.GetColorMask(saved[0], saved[1], saved[2], saved[3]);
gl_RenderState.SetColorMask(r, g, b, a);
gl_RenderState.ApplyColorMask();
gl_RenderState.EnableDrawBuffers(1);
}
~ScopedColorMask() {
gl_RenderState.EnableDrawBuffers(gl_RenderState.GetPassDrawBufferCount());
gl_RenderState.SetColorMask(saved[0], saved[1], saved[2], saved[3]);
gl_RenderState.ApplyColorMask();
}

7
src/gl/system/gl_cvars.h
View file

@ -50,6 +50,13 @@ EXTERN_CVAR(Bool, gl_lens)
EXTERN_CVAR(Float, gl_lens_k)
EXTERN_CVAR(Float, gl_lens_kcube)
EXTERN_CVAR(Float, gl_lens_chromatic)
EXTERN_CVAR(Int, gl_ssao)
EXTERN_CVAR(Int, gl_ssao_portals)
EXTERN_CVAR(Float, gl_ssao_strength)
EXTERN_CVAR(Int, gl_ssao_debug)
EXTERN_CVAR(Float, gl_ssao_bias)
EXTERN_CVAR(Float, gl_ssao_radius)
EXTERN_CVAR(Float, gl_ssao_blur_amount)
EXTERN_CVAR(Int, gl_debug_level)
EXTERN_CVAR(Bool, gl_debug_breakpoint)

5
src/gl/textures/gl_hwtexture.cpp
View file

@ -374,6 +374,11 @@ unsigned int FHardwareTexture::Bind(int texunit, int translation, bool needmipma
return 0;
}
unsigned int FHardwareTexture::GetTextureHandle(int translation)
{
TranslatedTexture *pTex = GetTexID(translation);
return pTex->glTexID;
}
void FHardwareTexture::Unbind(int texunit)
{

1
src/gl/textures/gl_hwtexture.h
View file

@ -83,6 +83,7 @@ public:
unsigned int Bind(int texunit, int translation, bool needmipmap);
unsigned int CreateTexture(unsigned char * buffer, int w, int h, int texunit, bool mipmap, int translation, const FString &name);
unsigned int GetTextureHandle(int translation);
void Clean(bool all);
void CleanUnused(SpriteHits &usedtranslations);

5
wadsrc/static/language.enu
View file

@ -2171,6 +2171,9 @@ NETMNU_TICBALANCE = "Latency balancing";
// Option Values
OPTVAL_OFF = "Off";
OPTVAL_ON = "On";
OPTVAL_LOW = "Low";
OPTVAL_MEDIUM = "Medium";
OPTVAL_HIGH = "High";
OPTVAL_MALE = "Male";
OPTVAL_FEMALE = "Female";
OPTVAL_OTHER = "Other";
@ -2640,6 +2643,8 @@ GLPREFMNU_MULTISAMPLE = "Multisample";
GLPREFMNU_TONEMAP = "Tonemap Mode";
GLPREFMNU_BLOOM = "Bloom effect";
GLPREFMNU_LENS = "Lens distortion effect";
GLPREFMNU_SSAO = "Ambient occlusion quality";
GLPREFMNU_SSAO_PORTALS = "Portals with AO";
GLPREFMNU_FXAA = "FXAA Quality";
// Option Values

10
wadsrc/static/menudef.zz
View file

@ -42,6 +42,14 @@ OptionValue "TonemapModes"
5, "$OPTVAL_PALETTE"
}
OptionValue "SSAOModes"
{
0, "$OPTVAL_OFF"
1, "$OPTVAL_LOW"
2, "$OPTVAL_MEDIUM"
3, "$OPTVAL_HIGH"
}
OptionValue "FXAAQuality"
{
0, "$OPTVAL_OFF"
@ -238,5 +246,7 @@ OptionMenu "GLPrefOptions"
Option "$GLPREFMNU_TONEMAP", gl_tonemap, "TonemapModes"
Option "$GLPREFMNU_BLOOM", gl_bloom, "OnOff"
Option "$GLPREFMNU_LENS", gl_lens, "OnOff"
Option "$GLPREFMNU_SSAO", gl_ssao, "SSAOModes"
Slider "$GLPREFMNU_SSAO_PORTALS", gl_ssao_portals, 0.0, 4.0, 1.0, 0
Option "$GLPREFMNU_FXAA", gl_fxaa, "FXAAQuality"
}

69
wadsrc/static/shaders/glsl/depthblur.fp Normal file
View file

@ -0,0 +1,69 @@
in vec2 TexCoord;
out vec4 FragColor;
uniform sampler2D AODepthTexture;
uniform float BlurSharpness;
uniform vec2 InvFullResolution;
uniform float PowExponent;
#define KERNEL_RADIUS 3.0
float CrossBilateralWeight(float r, float sampleDepth, float centerDepth)
{
const float blurSigma = KERNEL_RADIUS * 0.5;
const float blurFalloff = 1.0 / (2.0 * blurSigma * blurSigma);
float deltaZ = (sampleDepth - centerDepth) * BlurSharpness;
return exp2(-r * r * blurFalloff - deltaZ * deltaZ);
}
void ProcessSample(float ao, float z, float r, float centerDepth, inout float totalAO, inout float totalW)
{
float w = CrossBilateralWeight(r, z, centerDepth);
totalAO += w * ao;
totalW += w;
}
void ProcessRadius(vec2 deltaUV, float centerDepth, inout float totalAO, inout float totalW)
{
for (float r = 1; r <= KERNEL_RADIUS; r += 1.0)
{
vec2 uv = r * deltaUV + TexCoord;
vec2 aoZ = texture(AODepthTexture, uv).xy;
ProcessSample(aoZ.x, aoZ.y, r, centerDepth, totalAO, totalW);
}
}
vec2 ComputeBlur(vec2 deltaUV)
{
vec2 aoZ = texture(AODepthTexture, TexCoord).xy;
float totalAO = aoZ.x;
float totalW = 1.0;
ProcessRadius(deltaUV, aoZ.y, totalAO, totalW);
ProcessRadius(-deltaUV, aoZ.y, totalAO, totalW);
return vec2(totalAO / totalW, aoZ.y);
}
vec2 BlurX()
{
return ComputeBlur(vec2(InvFullResolution.x, 0.0));
}
float BlurY()
{
return pow(clamp(ComputeBlur(vec2(0.0, InvFullResolution.y)).x, 0.0, 1.0), PowExponent);
}
void main()
{
#if defined(BLUR_HORIZONTAL)
FragColor = vec4(BlurX(), 0.0, 1.0);
#else
FragColor = vec4(BlurY(), 0.0, 0.0, 1.0);
#endif
}

46
wadsrc/static/shaders/glsl/lineardepth.fp Normal file
View file

@ -0,0 +1,46 @@
in vec2 TexCoord;
out vec4 FragColor;
#if defined(MULTISAMPLE)
uniform sampler2DMS DepthTexture;
uniform sampler2DMS ColorTexture;
uniform int SampleIndex;
#else
uniform sampler2D DepthTexture;
uniform sampler2D ColorTexture;
#endif
uniform float LinearizeDepthA;
uniform float LinearizeDepthB;
uniform float InverseDepthRangeA;
uniform float InverseDepthRangeB;
uniform vec2 Scale;
uniform vec2 Offset;
float normalizeDepth(float depth)
{
float normalizedDepth = clamp(InverseDepthRangeA * depth + InverseDepthRangeB, 0.0, 1.0);
return 1.0 / (normalizedDepth * LinearizeDepthA + LinearizeDepthB);
}
void main()
{
vec2 uv = Offset + TexCoord * Scale;
#if defined(MULTISAMPLE)
ivec2 texSize = textureSize(DepthTexture);
#else
ivec2 texSize = textureSize(DepthTexture, 0);
#endif
ivec2 ipos = ivec2(max(uv * vec2(texSize), vec2(0.0)));
#if defined(MULTISAMPLE)
float depth = normalizeDepth(texelFetch(ColorTexture, ipos, SampleIndex).a != 0.0 ? texelFetch(DepthTexture, ipos, SampleIndex).x : 1.0);
#else
float depth = normalizeDepth(texelFetch(ColorTexture, ipos, 0).a != 0.0 ? texelFetch(DepthTexture, ipos, 0).x : 1.0);
#endif
FragColor = vec4(depth, 0.0, 0.0, 1.0);
}

34
wadsrc/static/shaders/glsl/main.fp
View file

@ -7,6 +7,10 @@ in vec4 vTexCoord;
in vec4 vColor;
out vec4 FragColor;
#ifdef GBUFFER_PASS
out vec4 FragFog;
out vec4 FragNormal;
#endif
#ifdef SHADER_STORAGE_LIGHTS
layout(std430, binding = 1) buffer LightBufferSSO
@ -266,6 +270,32 @@ vec4 applyFog(vec4 frag, float fogfactor)
return vec4(mix(uFogColor.rgb, frag.rgb, fogfactor), frag.a);
}
//===========================================================================
//
// The color of the fragment if it is fully occluded by ambient lighting
//
//===========================================================================
vec3 AmbientOcclusionColor()
{
float fogdist;
float fogfactor;
//
// calculate fog factor
//
if (uFogEnabled == -1)
{
fogdist = pixelpos.w;
}
else
{
fogdist = max(16.0, distance(pixelpos.xyz, uCameraPos.xyz));
}
fogfactor = exp2 (uFogDensity * fogdist);
return mix(uFogColor.rgb, vec3(0.0), fogfactor);
}
//===========================================================================
//
@ -381,5 +411,9 @@ void main()
}
}
FragColor = frag;
#ifdef GBUFFER_PASS
FragFog = vec4(AmbientOcclusionColor(), 1.0);
FragNormal = vec4(vEyeNormal.xyz * 0.5 + 0.5, 1.0);
#endif
}

138
wadsrc/static/shaders/glsl/ssao.fp Normal file
View file

@ -0,0 +1,138 @@
in vec2 TexCoord;
out vec4 FragColor;
uniform vec2 UVToViewA;
uniform vec2 UVToViewB;
uniform vec2 InvFullResolution;
uniform float NDotVBias;
uniform float NegInvR2;
uniform float RadiusToScreen;
uniform float AOMultiplier;
uniform float AOStrength;
uniform vec2 Scale;
uniform vec2 Offset;
uniform sampler2D DepthTexture;
#if defined(MULTISAMPLE)
uniform sampler2DMS NormalTexture;
uniform int SampleIndex;
#else
uniform sampler2D NormalTexture;
#endif
#if defined(USE_RANDOM_TEXTURE)
uniform sampler2D RandomTexture;
#endif
#define PI 3.14159265358979323846
// Calculate eye space position for the specified texture coordinate
vec3 FetchViewPos(vec2 uv)
{
float z = texture(DepthTexture, uv).x;
return vec3((UVToViewA * uv + UVToViewB) * z, z);
}
#if defined(MULTISAMPLE)
vec3 SampleNormal(vec2 uv)
{
ivec2 texSize = textureSize(NormalTexture);
ivec2 ipos = ivec2(uv * vec2(texSize));
return texelFetch(NormalTexture, ipos, SampleIndex).xyz * 2.0 - 1.0;
}
#else
vec3 SampleNormal(vec2 uv)
{
ivec2 texSize = textureSize(NormalTexture, 0);
ivec2 ipos = ivec2(uv * vec2(texSize));
return texelFetch(NormalTexture, ipos, 0).xyz * 2.0 - 1.0;
}
#endif
// Look up the eye space normal for the specified texture coordinate
vec3 FetchNormal(vec2 uv)
{
vec3 normal = SampleNormal(Offset + uv * Scale);
if (length(normal) > 0.1)
{
normal = normalize(normal);
normal.z = -normal.z;
return normal;
}
else
{
return vec3(0.0);
}
}
// Compute normalized 2D direction
vec2 RotateDirection(vec2 dir, vec2 cossin)
{
return vec2(dir.x * cossin.x - dir.y * cossin.y, dir.x * cossin.y + dir.y * cossin.x);
}
vec4 GetJitter()
{
#if !defined(USE_RANDOM_TEXTURE)
return vec4(1,0,1,1);
//vec3 rand = noise3(TexCoord.x + TexCoord.y);
//float angle = 2.0 * PI * rand.x / NUM_DIRECTIONS;
//return vec4(cos(angle), sin(angle), rand.y, rand.z);
#else
return texture(RandomTexture, gl_FragCoord.xy / RANDOM_TEXTURE_WIDTH);
#endif
}
// Calculates the ambient occlusion of a sample
float ComputeSampleAO(vec3 kernelPos, vec3 normal, vec3 samplePos)
{
vec3 v = samplePos - kernelPos;
float distanceSquare = dot(v, v);
float nDotV = dot(normal, v) * inversesqrt(distanceSquare);
return clamp(nDotV - NDotVBias, 0.0, 1.0) * clamp(distanceSquare * NegInvR2 + 1.0, 0.0, 1.0);
}
// Calculates the total ambient occlusion for the entire fragment
float ComputeAO(vec3 viewPosition, vec3 viewNormal)
{
vec4 rand = GetJitter();
float radiusPixels = RadiusToScreen / viewPosition.z;
float stepSizePixels = radiusPixels / (NUM_STEPS + 1.0);
const float directionAngleStep = 2.0 * PI / NUM_DIRECTIONS;
float ao = 0.0;
for (float directionIndex = 0.0; directionIndex < NUM_DIRECTIONS; ++directionIndex)
{
float angle = directionAngleStep * directionIndex;
vec2 direction = RotateDirection(vec2(cos(angle), sin(angle)), rand.xy);
float rayPixels = (rand.z * stepSizePixels + 1.0);
for (float StepIndex = 0.0; StepIndex < NUM_STEPS; ++StepIndex)
{
vec2 sampleUV = round(rayPixels * direction) * InvFullResolution + TexCoord;
vec3 samplePos = FetchViewPos(sampleUV);
ao += ComputeSampleAO(viewPosition, viewNormal, samplePos);
rayPixels += stepSizePixels;
}
}
ao *= AOMultiplier / (NUM_DIRECTIONS * NUM_STEPS);
return clamp(1.0 - ao * 2.0, 0.0, 1.0);
}
void main()
{
vec3 viewPosition = FetchViewPos(TexCoord);
vec3 viewNormal = FetchNormal(TexCoord);
float occlusion = viewNormal != vec3(0.0) ? ComputeAO(viewPosition, viewNormal) * AOStrength + (1.0 - AOStrength) : 1.0;
FragColor = vec4(occlusion, viewPosition.z, 0.0, 1.0);
}

39
wadsrc/static/shaders/glsl/ssaocombine.fp Normal file
View file

@ -0,0 +1,39 @@
in vec2 TexCoord;
out vec4 FragColor;
uniform sampler2D AODepthTexture;
#if defined(MULTISAMPLE)
uniform sampler2DMS SceneFogTexture;
uniform int SampleCount;
#else
uniform sampler2D SceneFogTexture;
#endif
uniform vec2 Scale;
uniform vec2 Offset;
void main()
{
vec2 uv = Offset + TexCoord * Scale;
#if defined(MULTISAMPLE)
ivec2 texSize = textureSize(SceneFogTexture);
#else
ivec2 texSize = textureSize(SceneFogTexture, 0);
#endif
ivec2 ipos = ivec2(uv * vec2(texSize));
#if defined(MULTISAMPLE)
vec3 fogColor = vec3(0.0);
for (int i = 0; i < SampleCount; i++)
fogColor += texelFetch(SceneFogTexture, ipos, i).rgb;
fogColor /= float(SampleCount);
#else
vec3 fogColor = texelFetch(SceneFogTexture, ipos, 0).rgb;
#endif
float attenutation = texture(AODepthTexture, TexCoord).x;
FragColor = vec4(fogColor, 1.0 - attenutation);
}

2
wadsrc/static/shaders/glsl/stencil.fp
View file

@ -3,6 +3,6 @@ out vec4 FragColor;
void main()
{
FragColor = vec4(1.0);
FragColor = vec4(1.0, 1.0, 1.0, 0.0);
}