Graphics: Add DepthMaterial
This commit is contained in:
Jérôme Leclercq
@@ -94,107 +94,115 @@ namespace Nz
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colorPtr[3] = diffuse.a / 255.f;
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}
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bool BasicMaterial::Initialize()
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MaterialSettings::Builder BasicMaterial::Build(const UniformOffsets& offsets, std::vector<UInt8> defaultValues, std::vector<std::shared_ptr<UberShader>> uberShaders, std::size_t* uniformBlockIndex, OptionIndexes* optionIndexes, TextureIndexes* textureIndexes)
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{
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FieldOffsets fieldOffsets(StructLayout::Std140);
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s_uniformOffsets.alphaThreshold = fieldOffsets.AddField(StructFieldType::Float1);
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s_uniformOffsets.diffuseColor = fieldOffsets.AddField(StructFieldType::Float4);
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s_uniformOffsets.totalSize = fieldOffsets.GetSize();
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MaterialSettings::Builder settings;
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std::vector<MaterialSettings::UniformVariable> variables;
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variables.assign({
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{
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if (offsets.alphaThreshold != std::numeric_limits<std::size_t>::max())
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{
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variables.push_back({
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"AlphaThreshold",
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s_uniformOffsets.alphaThreshold
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},
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{
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offsets.alphaThreshold
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});
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}
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if (offsets.diffuseColor != std::numeric_limits<std::size_t>::max())
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{
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variables.push_back({
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"DiffuseColor",
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s_uniformOffsets.diffuseColor
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}
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});
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offsets.diffuseColor
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});
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}
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if (offsets.alphaThreshold != std::numeric_limits<std::size_t>::max())
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AccessByOffset<float&>(defaultValues.data(), offsets.alphaThreshold) = 0.2f;
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static_assert(sizeof(Vector4f) == 4 * sizeof(float), "Vector4f is expected to be exactly 4 floats wide");
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if (offsets.diffuseColor != std::numeric_limits<std::size_t>::max())
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AccessByOffset<Vector4f&>(defaultValues.data(), offsets.diffuseColor) = Vector4f(1.f, 1.f, 1.f, 1.f);
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// Textures
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if (textureIndexes)
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textureIndexes->alpha = settings.textures.size();
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std::vector<UInt8> defaultValues(fieldOffsets.GetSize());
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AccessByOffset<Vector4f&>(defaultValues.data(), s_uniformOffsets.diffuseColor) = Vector4f(1.f, 1.f, 1.f, 1.f);
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AccessByOffset<float&>(defaultValues.data(), s_uniformOffsets.alphaThreshold) = 0.2f;
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s_textureIndexes.alpha = settings.textures.size();
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settings.textures.push_back({
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2,
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"Alpha",
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ImageType::E2D
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});
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s_textureIndexes.diffuse = settings.textures.size();
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if (textureIndexes)
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textureIndexes->diffuse = settings.textures.size();
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settings.textures.push_back({
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1,
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"Diffuse",
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ImageType::E2D
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});
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s_uniformBlockIndex = settings.uniformBlocks.size();
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if (uniformBlockIndex)
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*uniformBlockIndex = settings.uniformBlocks.size();
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settings.uniformBlocks.push_back({
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0,
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"BasicSettings",
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fieldOffsets.GetSize(),
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offsets.totalSize,
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std::move(variables),
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std::move(defaultValues)
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});
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// Shaders
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ShaderAst::StatementPtr shaderAst = ShaderLang::Parse(std::string_view(reinterpret_cast<const char*>(r_shader), sizeof(r_shader)));
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auto uberShader = std::make_shared<UberShader>(ShaderStageType::Fragment | ShaderStageType::Vertex, shaderAst);
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settings.shaders.emplace_back(uberShader);
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settings.shaders = std::move(uberShaders);
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// Options
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// HasDiffuseMap
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{
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std::array<UInt64, ShaderStageTypeCount> shaderOptions;
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shaderOptions.fill(0);
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shaderOptions[UnderlyingCast(ShaderStageType::Fragment)] = uberShader->GetOptionFlagByName("HAS_DIFFUSE_TEXTURE");
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shaderOptions[UnderlyingCast(ShaderStageType::Vertex)] = uberShader->GetOptionFlagByName("HAS_DIFFUSE_TEXTURE");
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if (optionIndexes)
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optionIndexes->hasDiffuseMap = settings.options.size();
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s_optionIndexes.hasDiffuseMap = settings.options.size();
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settings.options.push_back({
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"HasDiffuseMap",
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shaderOptions
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});
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}
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MaterialSettings::BuildOption(settings.options, settings.shaders, "HasDiffuseMap", "HAS_DIFFUSE_TEXTURE");
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// HasAlphaMap
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{
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std::array<UInt64, ShaderStageTypeCount> shaderOptions;
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shaderOptions.fill(0);
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shaderOptions[UnderlyingCast(ShaderStageType::Fragment)] = uberShader->GetOptionFlagByName("HAS_ALPHA_TEXTURE");
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shaderOptions[UnderlyingCast(ShaderStageType::Vertex)] = uberShader->GetOptionFlagByName("HAS_ALPHA_TEXTURE");
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if (optionIndexes)
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optionIndexes->hasAlphaMap = settings.options.size();
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s_optionIndexes.hasAlphaMap = settings.options.size();
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settings.options.push_back({
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"HasAlphaMap",
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shaderOptions
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});
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}
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MaterialSettings::BuildOption(settings.options, settings.shaders, "HasAlphaMap", "HAS_ALPHA_TEXTURE");
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// AlphaTest
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{
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std::array<UInt64, ShaderStageTypeCount> shaderOptions;
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shaderOptions.fill(0);
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shaderOptions[UnderlyingCast(ShaderStageType::Fragment)] = uberShader->GetOptionFlagByName("ALPHA_TEST");
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if (optionIndexes)
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optionIndexes->alphaTest = settings.options.size();
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s_optionIndexes.alphaTest = settings.options.size();
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settings.options.push_back({
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"AlphaTest",
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shaderOptions
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});
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}
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MaterialSettings::BuildOption(settings.options, settings.shaders, "AlphaTest", "ALPHA_TEST");
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s_materialSettings = std::make_shared<MaterialSettings>(std::move(settings));
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return settings;
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}
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std::vector<std::shared_ptr<UberShader>> BasicMaterial::BuildShaders()
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{
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ShaderAst::StatementPtr shaderAst = ShaderLang::Parse(std::string_view(reinterpret_cast<const char*>(r_shader), sizeof(r_shader)));
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auto shader = std::make_shared<UberShader>(ShaderStageType::Fragment | ShaderStageType::Vertex, shaderAst);
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return { std::move(shader) };
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}
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auto BasicMaterial::BuildUniformOffsets() -> std::pair<UniformOffsets, FieldOffsets>
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{
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FieldOffsets fieldOffsets(StructLayout::Std140);
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UniformOffsets uniformOffsets;
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uniformOffsets.alphaThreshold = fieldOffsets.AddField(StructFieldType::Float1);
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uniformOffsets.diffuseColor = fieldOffsets.AddField(StructFieldType::Float4);
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uniformOffsets.totalSize = fieldOffsets.GetSize();
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return std::make_pair(std::move(uniformOffsets), std::move(fieldOffsets));
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}
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bool BasicMaterial::Initialize()
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{
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std::tie(s_uniformOffsets, std::ignore) = BuildUniformOffsets();
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std::vector<UInt8> defaultValues(s_uniformOffsets.totalSize);
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s_materialSettings = std::make_shared<MaterialSettings>(Build(s_uniformOffsets, std::move(defaultValues), BuildShaders(), &s_uniformBlockIndex, &s_optionIndexes, &s_textureIndexes));
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return true;
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}
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