From b9dca8966dd1ea8888ee76e0c366f14438e68118 Mon Sep 17 00:00:00 2001 From: Lynix Date: Sat, 11 Jan 2014 19:16:36 +0100 Subject: [PATCH] Improved Deferred Shading performances Former-commit-id: 7251e9f552230c31409f7780929fcc30f2b85bed --- src/Nazara/Graphics/DeferredFogPass.cpp | 16 ++++++--- src/Nazara/Graphics/DeferredGeometryPass.cpp | 13 +++---- .../DeferredShading/Shaders/ClearGBuffer.frag | 4 +-- .../Shaders/ClearGBuffer.frag.h | 2 +- .../Shaders/DirectionalLight.frag | 32 +++++++++++------ .../Shaders/DirectionalLight.frag.h | 2 +- .../Shaders/PointSpotLight.frag | 32 +++++++++++------ .../Shaders/PointSpotLight.frag.h | 2 +- .../Resources/Shaders/Model/core.frag | 36 +++++++++++++++---- .../Resources/Shaders/Model/core.frag.h | 2 +- 10 files changed, 95 insertions(+), 46 deletions(-) diff --git a/src/Nazara/Graphics/DeferredFogPass.cpp b/src/Nazara/Graphics/DeferredFogPass.cpp index 9199885d8..82150e272 100644 --- a/src/Nazara/Graphics/DeferredFogPass.cpp +++ b/src/Nazara/Graphics/DeferredFogPass.cpp @@ -24,7 +24,7 @@ namespace "out vec4 RenderTarget0;\n" "uniform sampler2D ColorTexture;\n" - "uniform sampler2D NormalBuffer;\n" + "uniform sampler2D GBuffer2;\n" "uniform mat4 InvViewProjMatrix;\n" "uniform vec2 InvTargetSize;\n" "uniform vec3 EyePosition;\n" @@ -32,12 +32,18 @@ namespace "float n = 0.1;" "float f = 1000.0;" + "float color_to_float(vec3 color)\n" + "{\n" + "const vec3 byte_to_float = vec3(1.0, 1.0/256, 1.0/(256*256));\n" + "return dot(color, byte_to_float);\n" + "}\n" + "void main()\n" "{" "vec2 texCoord = gl_FragCoord.xy * InvTargetSize;\n" "\t" "vec3 color = texture(ColorTexture, texCoord).xyz;\n" - "vec4 gVec1 = textureLod(NormalBuffer, texCoord, 0.0);\n" - "float depth = gVec1.w*2.0 - 1.0;\n" + "vec4 gVec2 = textureLod(GBuffer2, texCoord, 0.0);\n" + "float depth = color_to_float(gVec2.xyz)*2.0 - 1.0;\n" "float linearDepth = (2 * n) / (f + n - depth * (f - n));" "vec3 viewSpace = vec3(texCoord*2.0 - 1.0, depth);\n" @@ -107,7 +113,7 @@ NzDeferredFogPass::NzDeferredFogPass() { m_program = BuildFogProgram(); m_program->SendInteger(m_program->GetUniformLocation("ColorTexture"), 0); - m_program->SendInteger(m_program->GetUniformLocation("NormalBuffer"), 1); + m_program->SendInteger(m_program->GetUniformLocation("GBuffer2"), 1); m_pointSampler.SetAnisotropyLevel(1); m_pointSampler.SetFilterMode(nzSamplerFilter_Nearest); @@ -129,7 +135,7 @@ bool NzDeferredFogPass::Process(const NzScene* scene, unsigned int firstWorkText NzRenderer::SetRenderStates(m_states); NzRenderer::SetTexture(0, m_workTextures[secondWorkTexture]); - NzRenderer::SetTexture(1, m_GBuffer[1]); + NzRenderer::SetTexture(1, m_GBuffer[2]); NzRenderer::SetTextureSampler(0, m_pointSampler); NzRenderer::SetTextureSampler(1, m_pointSampler); NzRenderer::DrawFullscreenQuad(); diff --git a/src/Nazara/Graphics/DeferredGeometryPass.cpp b/src/Nazara/Graphics/DeferredGeometryPass.cpp index b9cbb675d..56c9a5048 100644 --- a/src/Nazara/Graphics/DeferredGeometryPass.cpp +++ b/src/Nazara/Graphics/DeferredGeometryPass.cpp @@ -254,24 +254,19 @@ bool NzDeferredGeometryPass::Resize(const NzVector2ui& dimensions) m_depthStencilBuffer->Create(nzPixelFormat_Depth24Stencil8, width, height); - m_GBuffer[0]->Create(nzImageType_2D, nzPixelFormat_RGBA8, width, height); - m_GBuffer[1]->Create(nzImageType_2D, nzPixelFormat_RGBA32F, width, height); - m_GBuffer[2]->Create(nzImageType_2D, nzPixelFormat_RGBA8, width, height); + m_GBuffer[0]->Create(nzImageType_2D, nzPixelFormat_RGBA8, width, height); // Texture 0 : Diffuse Color + Specular + m_GBuffer[1]->Create(nzImageType_2D, nzPixelFormat_RG16F, width, height); // Texture 1 : Encoded normal + m_GBuffer[2]->Create(nzImageType_2D, nzPixelFormat_RGBA8, width, height); // Texture 2 : Depth (24bits) + Shininess m_GBufferRTT->Create(true); - // Texture 0 : Diffuse Color + Flags m_GBufferRTT->AttachTexture(nzAttachmentPoint_Color, 0, m_GBuffer[0]); - - // Texture 1 : Normal map + Depth m_GBufferRTT->AttachTexture(nzAttachmentPoint_Color, 1, m_GBuffer[1]); - - // Texture 2 : Specular value + Shininess m_GBufferRTT->AttachTexture(nzAttachmentPoint_Color, 2, m_GBuffer[2]); // Texture 3 : Emission map ? - m_GBufferRTT->AttachBuffer(nzAttachmentPoint_DepthStencil, 0, m_deferredTechnique->GetDepthStencilBuffer()); + m_GBufferRTT->AttachBuffer(nzAttachmentPoint_DepthStencil, 0, m_depthStencilBuffer); m_GBufferRTT->Unlock(); diff --git a/src/Nazara/Graphics/Resources/DeferredShading/Shaders/ClearGBuffer.frag b/src/Nazara/Graphics/Resources/DeferredShading/Shaders/ClearGBuffer.frag index ea24e038c..9ee5891f4 100644 --- a/src/Nazara/Graphics/Resources/DeferredShading/Shaders/ClearGBuffer.frag +++ b/src/Nazara/Graphics/Resources/DeferredShading/Shaders/ClearGBuffer.frag @@ -7,7 +7,7 @@ out vec4 RenderTarget2; void main() { RenderTarget0 = vec4(0.0, 0.0, 0.0, 0.0); - RenderTarget1 = vec4(0.0, 0.0, 0.0, 1.0); - RenderTarget2 = vec4(0.0, 0.0, 0.0, 0.0); + RenderTarget1 = vec4(0.0, 0.0, 0.0, 0.0); + RenderTarget2 = vec4(1.0, 0.0, 0.0, 0.0); gl_FragDepth = 1.0; } diff --git a/src/Nazara/Graphics/Resources/DeferredShading/Shaders/ClearGBuffer.frag.h b/src/Nazara/Graphics/Resources/DeferredShading/Shaders/ClearGBuffer.frag.h index 762b4d95d..b63b360f8 100644 --- a/src/Nazara/Graphics/Resources/DeferredShading/Shaders/ClearGBuffer.frag.h +++ b/src/Nazara/Graphics/Resources/DeferredShading/Shaders/ClearGBuffer.frag.h @@ -1 +1 @@ -35,118,101,114,115,105,111,110,32,49,52,48,13,10,13,10,111,117,116,32,118,101,99,52,32,82,101,110,100,101,114,84,97,114,103,101,116,48,59,13,10,111,117,116,32,118,101,99,52,32,82,101,110,100,101,114,84,97,114,103,101,116,49,59,13,10,111,117,116,32,118,101,99,52,32,82,101,110,100,101,114,84,97,114,103,101,116,50,59,13,10,13,10,118,111,105,100,32,109,97,105,110,40,41,13,10,123,13,10,9,82,101,110,100,101,114,84,97,114,103,101,116,48,32,61,32,118,101,99,52,40,48,46,48,44,32,48,46,48,44,32,48,46,48,44,32,48,46,48,41,59,13,10,9,82,101,110,100,101,114,84,97,114,103,101,116,49,32,61,32,118,101,99,52,40,48,46,48,44,32,48,46,48,44,32,48,46,48,44,32,49,46,48,41,59,13,10,9,82,101,110,100,101,114,84,97,114,103,101,116,50,32,61,32,118,101,99,52,40,48,46,48,44,32,48,46,48,44,32,48,46,48,44,32,48,46,48,41,59,13,10,9,103,108,95,70,114,97,103,68,101,112,116,104,32,61,32,49,46,48,59,13,10,125,13,10, \ No newline at end of file +35,118,101,114,115,105,111,110,32,49,52,48,13,10,13,10,111,117,116,32,118,101,99,52,32,82,101,110,100,101,114,84,97,114,103,101,116,48,59,13,10,111,117,116,32,118,101,99,52,32,82,101,110,100,101,114,84,97,114,103,101,116,49,59,13,10,111,117,116,32,118,101,99,52,32,82,101,110,100,101,114,84,97,114,103,101,116,50,59,13,10,13,10,118,111,105,100,32,109,97,105,110,40,41,13,10,123,13,10,9,82,101,110,100,101,114,84,97,114,103,101,116,48,32,61,32,118,101,99,52,40,48,46,48,44,32,48,46,48,44,32,48,46,48,44,32,48,46,48,41,59,13,10,9,82,101,110,100,101,114,84,97,114,103,101,116,49,32,61,32,118,101,99,52,40,48,46,48,44,32,48,46,48,44,32,48,46,48,44,32,48,46,48,41,59,13,10,9,82,101,110,100,101,114,84,97,114,103,101,116,50,32,61,32,118,101,99,52,40,49,46,48,44,32,48,46,48,44,32,48,46,48,44,32,48,46,48,41,59,13,10,9,103,108,95,70,114,97,103,68,101,112,116,104,32,61,32,49,46,48,59,13,10,125,13,10, \ No newline at end of file diff --git a/src/Nazara/Graphics/Resources/DeferredShading/Shaders/DirectionalLight.frag b/src/Nazara/Graphics/Resources/DeferredShading/Shaders/DirectionalLight.frag index f48d41baa..b5212389d 100644 --- a/src/Nazara/Graphics/Resources/DeferredShading/Shaders/DirectionalLight.frag +++ b/src/Nazara/Graphics/Resources/DeferredShading/Shaders/DirectionalLight.frag @@ -25,23 +25,35 @@ uniform mat4 InvViewProjMatrix; uniform vec2 InvTargetSize; uniform vec4 SceneAmbient; +float ColorToFloat(vec3 color) +{ + const vec3 byte_to_float = vec3(1.0, 1.0/256, 1.0/(256*256)); + return dot(color, byte_to_float); +} + +#define kPI 3.1415926536 + +vec3 DecodeNormal(in vec4 encodedNormal) +{ + //return encodedNormal.xyz*2.0 - 1.0; + float a = encodedNormal.x * kPI; + vec2 scth = vec2(sin(a), cos(a)); + + vec2 scphi = vec2(sqrt(1.0 - encodedNormal.y*encodedNormal.y), encodedNormal.y); + return vec3(scth.y*scphi.x, scth.x*scphi.x, scphi.y); +} + void main() { vec2 texCoord = gl_FragCoord.xy * InvTargetSize; vec4 gVec0 = textureLod(GBuffer0, texCoord, 0.0); - if (gVec0.w == 0.0) - { - RenderTarget0 = vec4(gVec0.xyz, 1.0); - return; - } - vec4 gVec1 = textureLod(GBuffer1, texCoord, 0.0); vec4 gVec2 = textureLod(GBuffer2, texCoord, 0.0); vec3 diffuseColor = gVec0.xyz; - vec3 normal = gVec1.xyz*2.0 - 1.0; - vec3 specularColor = gVec2.xyz; - float depth = gVec1.w*2.0 - 1.0; + vec3 normal = DecodeNormal(gVec1); + vec3 specularColor = vec3(gVec0.w); + float depth = ColorToFloat(gVec2.xyz); float shininess = (gVec2.w == 0.0) ? 0.0 : exp2(gVec2.w*10.5); vec3 lightDir = -Lights[0].parameters1.xyz; @@ -58,7 +70,7 @@ void main() vec3 lightSpecular = vec3(0.0); if (shininess > 0.0) { - vec3 viewSpace = vec3(texCoord*2.0 - 1.0, depth); + vec3 viewSpace = vec3(texCoord*2.0 - 1.0, depth*2.0 - 1.0); vec4 worldPos = InvViewProjMatrix * vec4(viewSpace, 1.0); worldPos.xyz /= worldPos.w; diff --git a/src/Nazara/Graphics/Resources/DeferredShading/Shaders/DirectionalLight.frag.h b/src/Nazara/Graphics/Resources/DeferredShading/Shaders/DirectionalLight.frag.h index b050c8af6..e557217bd 100644 --- a/src/Nazara/Graphics/Resources/DeferredShading/Shaders/DirectionalLight.frag.h +++ b/src/Nazara/Graphics/Resources/DeferredShading/Shaders/DirectionalLight.frag.h @@ -1 +1 @@ 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\ No newline at end of file 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\ No newline at end of file diff --git a/src/Nazara/Graphics/Resources/DeferredShading/Shaders/PointSpotLight.frag b/src/Nazara/Graphics/Resources/DeferredShading/Shaders/PointSpotLight.frag index 1fcbfed79..0865bc70d 100644 --- a/src/Nazara/Graphics/Resources/DeferredShading/Shaders/PointSpotLight.frag +++ b/src/Nazara/Graphics/Resources/DeferredShading/Shaders/PointSpotLight.frag @@ -28,6 +28,24 @@ uniform vec4 SceneAmbient; uniform bool Discard = false; uniform bool SpotLight; +float ColorToFloat(vec3 color) +{ + const vec3 byte_to_float = vec3(1.0, 1.0/256, 1.0/(256*256)); + return dot(color, byte_to_float); +} + +#define kPI 3.1415926536 + +vec3 DecodeNormal(in vec4 encodedNormal) +{ + //return encodedNormal.xyz*2.0 - 1.0; + float a = encodedNormal.x * kPI; + vec2 scth = vec2(sin(a), cos(a)); + + vec2 scphi = vec2(sqrt(1.0 - encodedNormal.y*encodedNormal.y), encodedNormal.y); + return vec3(scth.y*scphi.x, scth.x*scphi.x, scphi.y); +} + void main() { if (Discard) @@ -35,22 +53,16 @@ void main() vec2 texCoord = gl_FragCoord.xy * InvTargetSize; vec4 gVec0 = textureLod(GBuffer0, texCoord, 0.0); - if (gVec0.w == 0.0) - { - RenderTarget0 = vec4(gVec0.xyz, 1.0); - return; - } - vec4 gVec1 = textureLod(GBuffer1, texCoord, 0.0); vec4 gVec2 = textureLod(GBuffer2, texCoord, 0.0); vec3 diffuseColor = gVec0.xyz; - vec3 normal = gVec1.xyz*2.0 - 1.0; - vec3 specularColor = gVec2.xyz; - float depth = gVec1.w*2.0 - 1.0; + vec3 normal = DecodeNormal(gVec1); + vec3 specularColor = vec3(gVec0.w); + float depth = ColorToFloat(gVec2.xyz); float shininess = (gVec2.w == 0.0) ? 0.0 : exp2(gVec2.w*10.5); - vec3 viewSpace = vec3(texCoord*2.0 - 1.0, depth); + vec3 viewSpace = vec3(texCoord*2.0 - 1.0, depth*2.0 - 1.0); vec4 worldPos = InvViewProjMatrix * vec4(viewSpace, 1.0); worldPos.xyz /= worldPos.w; diff --git a/src/Nazara/Graphics/Resources/DeferredShading/Shaders/PointSpotLight.frag.h b/src/Nazara/Graphics/Resources/DeferredShading/Shaders/PointSpotLight.frag.h index 6bdaa6b54..f3b44a26f 100644 --- a/src/Nazara/Graphics/Resources/DeferredShading/Shaders/PointSpotLight.frag.h +++ b/src/Nazara/Graphics/Resources/DeferredShading/Shaders/PointSpotLight.frag.h @@ -1 +1 @@ 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\ No newline at end of file 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\ No newline at end of file diff --git a/src/Nazara/Renderer/Resources/Shaders/Model/core.frag b/src/Nazara/Renderer/Resources/Shaders/Model/core.frag index 5cc0d17bc..ef119817d 100644 --- a/src/Nazara/Renderer/Resources/Shaders/Model/core.frag +++ b/src/Nazara/Renderer/Resources/Shaders/Model/core.frag @@ -46,6 +46,30 @@ uniform float ParallaxScale = 0.02; uniform vec4 SceneAmbient; /********************Fonctions********************/ +vec3 FloatToColor(float f) +{ + vec3 color; + + f *= 256.0; + color.x = floor(f); + + f = (f - color.x) * 256.0; + color.y = floor(f); + + color.z = f - color.y; + color.xy *= 0.00390625; // *= 1.0/256 + + return color; +} + +#define kPI 3.1415926536 + +vec4 EncodeNormal(in vec3 normal) +{ + //return vec4(normal*0.5 + 0.5, 0.0); + return vec4(vec2(atan(normal.y, normal.x)/kPI, normal.z), 0.0, 0.0); +} + void main() { vec4 diffuseColor = MaterialDiffuse; @@ -85,13 +109,13 @@ void main() #endif /* - Texture0: Diffuse Color + Flags - Texture1: Normal map + Depth - Texture2: Specular color + Shininess + Texture0: Diffuse Color + Specular + Texture1: Normal + Specular + Texture2: Encoded depth + Shininess */ - RenderTarget0 = vec4(diffuseColor.rgb, 1.0); - RenderTarget1 = vec4(normal*0.5 + 0.5, gl_FragCoord.z); - RenderTarget2 = vec4(specularColor, (MaterialShininess == 0.0) ? 0.0 : max(log2(MaterialShininess), 0.1)/10.5); // http://www.guerrilla-games.com/publications/dr_kz2_rsx_dev07.pdf + RenderTarget0 = vec4(diffuseColor.rgb, dot(specularColor, vec3(0.3, 0.59, 0.11))); + RenderTarget1 = vec4(EncodeNormal(normal)); + RenderTarget2 = vec4(FloatToColor(gl_FragCoord.z), (MaterialShininess == 0.0) ? 0.0 : max(log2(MaterialShininess), 0.1)/10.5); // http://www.guerrilla-games.com/publications/dr_kz2_rsx_dev07.pdf #else // LIGHTING RenderTarget0 = vec4(diffuseColor.rgb, 0.0); #endif diff --git a/src/Nazara/Renderer/Resources/Shaders/Model/core.frag.h b/src/Nazara/Renderer/Resources/Shaders/Model/core.frag.h index 82cfd78dd..ea5ecb2d4 100644 --- a/src/Nazara/Renderer/Resources/Shaders/Model/core.frag.h +++ b/src/Nazara/Renderer/Resources/Shaders/Model/core.frag.h @@ -1 +1 @@ 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\ No newline at end of file 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\ No newline at end of file