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Improved Deferred Shading performances

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Former-commit-id: 7251e9f552230c31409f7780929fcc30f2b85bed
This commit is contained in:
Lynix
2014-01-11 19:16:36 +01:00
parent 9bf66e7e16
commit b9dca8966d
10 changed files with 95 additions and 46 deletions
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16
src/Nazara/Graphics/DeferredFogPass.cpp
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@@ -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();