Deferred Shading update
-Deferred Shading now use a dynamics pass system -Forward Shading is now capable of rendering more than three lights (Multipass) Former-commit-id: 74ed0b998d72aa9eb3bd2aab938a75985ebb2bf6
This commit is contained in:
Lynix
309
src/Nazara/Graphics/DeferredBloomPass.cpp
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309
src/Nazara/Graphics/DeferredBloomPass.cpp
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// Copyright (C) 2013 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Graphics module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Graphics/DeferredBloomPass.hpp>
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#include <Nazara/Renderer/Renderer.hpp>
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#include <memory>
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#include <Nazara/Graphics/Debug.hpp>
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namespace
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{
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NzShaderProgram* BuildBloomBrightProgram()
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{
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const nzUInt8 fragmentSource[] = {
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#include <Nazara/Graphics/Resources/DeferredShading/Shaders/BloomBright.frag.h>
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};
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const char* vertexSource =
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"#version 140\n"
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"in vec3 VertexPosition;\n"
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"void main()\n"
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"{\n"
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"\t" "gl_Position = vec4(VertexPosition, 1.0);" "\n"
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"}\n";
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///TODO: Remplacer ça par des ShaderNode
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std::unique_ptr<NzShaderProgram> program(new NzShaderProgram(nzShaderLanguage_GLSL));
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program->SetPersistent(false);
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if (!program->LoadShader(nzShaderType_Fragment, NzString(reinterpret_cast<const char*>(fragmentSource), sizeof(fragmentSource))))
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{
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NazaraError("Failed to load fragment shader");
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return nullptr;
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}
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if (!program->LoadShader(nzShaderType_Vertex, vertexSource))
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{
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NazaraError("Failed to load vertex shader");
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return nullptr;
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}
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if (!program->Compile())
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{
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NazaraError("Failed to compile program");
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return nullptr;
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}
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program->SendInteger(program->GetUniformLocation("ColorTexture"), 0);
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return program.release();
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}
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NzShaderProgram* BuildBloomFinalProgram()
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{
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const nzUInt8 fragmentSource[] = {
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#include <Nazara/Graphics/Resources/DeferredShading/Shaders/BloomFinal.frag.h>
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};
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const char* vertexSource =
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"#version 140\n"
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"in vec3 VertexPosition;\n"
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"void main()\n"
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"{\n"
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"\t" "gl_Position = vec4(VertexPosition, 1.0);" "\n"
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"}\n";
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///TODO: Remplacer ça par des ShaderNode
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std::unique_ptr<NzShaderProgram> program(new NzShaderProgram(nzShaderLanguage_GLSL));
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program->SetPersistent(false);
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if (!program->LoadShader(nzShaderType_Fragment, NzString(reinterpret_cast<const char*>(fragmentSource), sizeof(fragmentSource))))
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{
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NazaraError("Failed to load fragment shader");
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return nullptr;
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}
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if (!program->LoadShader(nzShaderType_Vertex, vertexSource))
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{
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NazaraError("Failed to load vertex shader");
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return nullptr;
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}
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if (!program->Compile())
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{
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NazaraError("Failed to compile program");
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return nullptr;
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}
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program->SendInteger(program->GetUniformLocation("ColorTexture"), 0);
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program->SendInteger(program->GetUniformLocation("BloomTexture"), 1);
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return program.release();
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}
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NzShaderProgram* BuildGaussianBlurProgram()
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{
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const nzUInt8 fragmentSource[] = {
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#include <Nazara/Graphics/Resources/DeferredShading/Shaders/GaussianBlur.frag.h>
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};
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const char* vertexSource =
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"#version 140\n"
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"in vec3 VertexPosition;\n"
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"void main()\n"
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"{\n"
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"\t" "gl_Position = vec4(VertexPosition, 1.0);" "\n"
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"}\n";
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///TODO: Remplacer ça par des ShaderNode
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std::unique_ptr<NzShaderProgram> program(new NzShaderProgram(nzShaderLanguage_GLSL));
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program->SetPersistent(false);
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if (!program->LoadShader(nzShaderType_Fragment, NzString(reinterpret_cast<const char*>(fragmentSource), sizeof(fragmentSource))))
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{
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NazaraError("Failed to load fragment shader");
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return nullptr;
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}
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if (!program->LoadShader(nzShaderType_Vertex, vertexSource))
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{
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NazaraError("Failed to load vertex shader");
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return nullptr;
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}
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if (!program->Compile())
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{
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NazaraError("Failed to compile program");
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return nullptr;
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}
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program->SendInteger(program->GetUniformLocation("ColorTexture"), 0);
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return program.release();
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}
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}
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NzDeferredBloomPass::NzDeferredBloomPass() :
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m_uniformUpdated(false),
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m_brightLuminance(0.8),
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m_brightMiddleGrey(0.5),
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m_brightThreshold(0.8),
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m_blurPassCount(5)
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{
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m_bilinearSampler.SetAnisotropyLevel(1);
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m_bilinearSampler.SetFilterMode(nzSamplerFilter_Bilinear);
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m_bilinearSampler.SetWrapMode(nzSamplerWrap_Clamp);
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m_bloomBrightProgram = BuildBloomBrightProgram();
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m_bloomBrightProgram->SendInteger(m_bloomBrightProgram->GetUniformLocation("ColorTexture"), 0);
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m_bloomFinalProgram = BuildBloomFinalProgram();
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m_bloomFinalProgram->SendInteger(m_bloomBrightProgram->GetUniformLocation("BloomTexture"), 1);
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m_bloomFinalProgram->SendInteger(m_bloomBrightProgram->GetUniformLocation("ColorTexture"), 0);
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m_bloomStates.parameters[nzRendererParameter_DepthBuffer] = false;
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for (unsigned int i = 0; i < 2; ++i)
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{
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m_bloomTextures[i] = new NzTexture;
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m_bloomTextures[i]->SetPersistent(false);
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}
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m_gaussianBlurProgram = BuildGaussianBlurProgram();
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m_gaussianBlurProgramFilterLocation = m_gaussianBlurProgram->GetUniformLocation("Filter");
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}
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NzDeferredBloomPass::~NzDeferredBloomPass() = default;
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unsigned int NzDeferredBloomPass::GetBlurPassCount() const
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{
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return m_blurPassCount;
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}
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float NzDeferredBloomPass::GetBrightLuminance() const
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{
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return m_brightLuminance;
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}
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float NzDeferredBloomPass::GetBrightMiddleGrey() const
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{
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return m_brightMiddleGrey;
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}
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float NzDeferredBloomPass::GetBrightThreshold() const
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{
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return m_brightThreshold;
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}
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NzTexture* NzDeferredBloomPass::GetTexture(unsigned int i) const
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{
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#if NAZARA_GRAPHICS_SAFE
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if (i >= 2)
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{
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NazaraError("Texture index out of range (" + NzString::Number(i) + " >= 2)");
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return nullptr;
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}
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#endif
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return m_bloomTextures[i];
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}
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bool NzDeferredBloomPass::Process(const NzScene* scene, unsigned int firstWorkTexture, unsigned secondWorkTexture) const
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{
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NazaraUnused(scene);
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NzRenderer::SetRenderStates(m_bloomStates);
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NzRenderer::SetTextureSampler(0, m_bilinearSampler);
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NzRenderer::SetTextureSampler(1, m_bilinearSampler);
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m_workRTT->SetColorTarget(firstWorkTexture);
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NzRenderer::SetTarget(m_workRTT);
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NzRenderer::SetViewport(NzRecti(0, 0, m_dimensions.x, m_dimensions.y));
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NzRenderer::SetShaderProgram(m_bloomBrightProgram);
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if (!m_uniformUpdated)
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{
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m_bloomBrightProgram->SendFloat(m_bloomBrightProgram->GetUniformLocation("BrightLuminance"), m_brightLuminance);
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m_bloomBrightProgram->SendFloat(m_bloomBrightProgram->GetUniformLocation("BrightMiddleGrey"), m_brightMiddleGrey);
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m_bloomBrightProgram->SendFloat(m_bloomBrightProgram->GetUniformLocation("BrightThreshold"), m_brightThreshold);
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m_uniformUpdated = true;
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}
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NzRenderer::SetTexture(0, m_workTextures[secondWorkTexture]);
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NzRenderer::DrawFullscreenQuad();
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NzRenderer::SetTarget(&m_bloomRTT);
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NzRenderer::SetViewport(NzRecti(0, 0, m_dimensions.x/8, m_dimensions.y/8));
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NzRenderer::SetShaderProgram(m_gaussianBlurProgram);
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for (unsigned int i = 0; i < m_blurPassCount; ++i)
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{
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m_bloomRTT.SetColorTarget(0); // bloomTextureA
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m_gaussianBlurProgram->SendVector(m_gaussianBlurProgramFilterLocation, NzVector2f(1.f, 0.f));
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NzRenderer::SetTexture(0, (i == 0) ? m_workTextures[firstWorkTexture] : static_cast<const NzTexture*>(m_bloomTextures[1]));
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NzRenderer::DrawFullscreenQuad();
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m_bloomRTT.SetColorTarget(1); // bloomTextureB
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m_gaussianBlurProgram->SendVector(m_gaussianBlurProgramFilterLocation, NzVector2f(0.f, 1.f));
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NzRenderer::SetTexture(0, m_bloomTextures[0]);
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NzRenderer::DrawFullscreenQuad();
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}
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m_workRTT->SetColorTarget(firstWorkTexture);
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NzRenderer::SetTarget(m_workRTT);
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NzRenderer::SetViewport(NzRecti(0, 0, m_dimensions.x, m_dimensions.y));
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NzRenderer::SetShaderProgram(m_bloomFinalProgram);
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NzRenderer::SetTexture(0, m_bloomTextures[1]);
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NzRenderer::SetTexture(1, m_workTextures[secondWorkTexture]);
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NzRenderer::DrawFullscreenQuad();
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return true;
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}
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bool NzDeferredBloomPass::Resize(const NzVector2ui& dimensions)
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{
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NzDeferredRenderPass::Resize(dimensions);
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m_bloomRTT.Create(true);
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for (unsigned int i = 0; i < 2; ++i)
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{
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m_bloomTextures[i]->Create(nzImageType_2D, nzPixelFormat_RGBA8, dimensions.x/8, dimensions.y/8);
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m_bloomRTT.AttachTexture(nzAttachmentPoint_Color, i, m_bloomTextures[i]);
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}
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m_bloomRTT.Unlock();
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if (!m_bloomRTT.IsComplete())
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{
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NazaraError("Incomplete RTT");
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return false;
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}
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return true;
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}
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void NzDeferredBloomPass::SetBlurPassCount(unsigned int passCount)
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{
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m_blurPassCount = passCount; // N'est pas une uniforme
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}
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void NzDeferredBloomPass::SetBrightLuminance(float luminance)
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{
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m_brightLuminance = luminance;
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m_uniformUpdated = false;
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}
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void NzDeferredBloomPass::SetBrightMiddleGrey(float middleGrey)
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{
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m_brightMiddleGrey = middleGrey;
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m_uniformUpdated = false;
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}
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void NzDeferredBloomPass::SetBrightThreshold(float threshold)
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{
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m_brightThreshold = threshold;
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m_uniformUpdated = false;
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}
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