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Merge pull request #4854 from ReinUsesLisp/cube-array-shadow
shader: Partially implement texture cube array shadow
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commit
a111a9ae2c
@ -39,8 +39,8 @@ using Operation = const OperationNode&;
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constexpr std::array INTERNAL_FLAG_NAMES = {"ZERO", "SIGN", "CARRY", "OVERFLOW"};
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char Swizzle(std::size_t component) {
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ASSERT(component < 4);
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return component["xyzw"];
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static constexpr std::string_view SWIZZLE{"xyzw"};
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return SWIZZLE.at(component);
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}
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constexpr bool IsGenericAttribute(Attribute::Index index) {
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@ -224,7 +224,7 @@ private:
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std::string Visit(const Node& node);
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std::pair<std::string, std::size_t> BuildCoords(Operation);
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std::tuple<std::string, std::string, std::size_t> BuildCoords(Operation);
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std::string BuildAoffi(Operation);
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std::string GlobalMemoryPointer(const GmemNode& gmem);
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void Exit();
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@ -1416,12 +1416,12 @@ std::string ARBDecompiler::Visit(const Node& node) {
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return {};
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}
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std::pair<std::string, std::size_t> ARBDecompiler::BuildCoords(Operation operation) {
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std::tuple<std::string, std::string, std::size_t> ARBDecompiler::BuildCoords(Operation operation) {
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const auto& meta = std::get<MetaTexture>(operation.GetMeta());
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UNIMPLEMENTED_IF(meta.sampler.is_indexed);
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UNIMPLEMENTED_IF(meta.sampler.is_shadow && meta.sampler.is_array &&
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meta.sampler.type == Tegra::Shader::TextureType::TextureCube);
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const bool is_extended = meta.sampler.is_shadow && meta.sampler.is_array &&
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meta.sampler.type == Tegra::Shader::TextureType::TextureCube;
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const std::size_t count = operation.GetOperandsCount();
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std::string temporary = AllocVectorTemporary();
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std::size_t i = 0;
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@ -1429,12 +1429,21 @@ std::pair<std::string, std::size_t> ARBDecompiler::BuildCoords(Operation operati
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AddLine("MOV.F {}.{}, {};", temporary, Swizzle(i), Visit(operation[i]));
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}
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if (meta.sampler.is_array) {
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AddLine("I2F.S {}.{}, {};", temporary, Swizzle(i++), Visit(meta.array));
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AddLine("I2F.S {}.{}, {};", temporary, Swizzle(i), Visit(meta.array));
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++i;
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}
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if (meta.sampler.is_shadow) {
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AddLine("MOV.F {}.{}, {};", temporary, Swizzle(i++), Visit(meta.depth_compare));
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std::string compare = Visit(meta.depth_compare);
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if (is_extended) {
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ASSERT(i == 4);
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std::string extra_coord = AllocVectorTemporary();
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AddLine("MOV.F {}.x, {};", extra_coord, compare);
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return {fmt::format("{}, {}", temporary, extra_coord), extra_coord, 0};
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}
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return {std::move(temporary), i};
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AddLine("MOV.F {}.{}, {};", temporary, Swizzle(i), compare);
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++i;
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}
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return {temporary, temporary, i};
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}
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std::string ARBDecompiler::BuildAoffi(Operation operation) {
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@ -1859,7 +1868,7 @@ std::string ARBDecompiler::LogicalAddCarry(Operation operation) {
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std::string ARBDecompiler::Texture(Operation operation) {
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const auto& meta = std::get<MetaTexture>(operation.GetMeta());
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const u32 sampler_id = device.GetBaseBindings(stage).sampler + meta.sampler.index;
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const auto [temporary, swizzle] = BuildCoords(operation);
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const auto [coords, temporary, swizzle] = BuildCoords(operation);
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std::string_view opcode = "TEX";
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std::string extra;
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@ -1888,7 +1897,7 @@ std::string ARBDecompiler::Texture(Operation operation) {
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}
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}
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AddLine("{}.F {}, {},{} texture[{}], {}{};", opcode, temporary, temporary, extra, sampler_id,
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AddLine("{}.F {}, {},{} texture[{}], {}{};", opcode, temporary, coords, extra, sampler_id,
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TextureType(meta), BuildAoffi(operation));
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AddLine("MOV.U {}.x, {}.{};", temporary, temporary, Swizzle(meta.element));
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return fmt::format("{}.x", temporary);
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@ -1897,7 +1906,7 @@ std::string ARBDecompiler::Texture(Operation operation) {
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std::string ARBDecompiler::TextureGather(Operation operation) {
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const auto& meta = std::get<MetaTexture>(operation.GetMeta());
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const u32 sampler_id = device.GetBaseBindings(stage).sampler + meta.sampler.index;
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const auto [temporary, swizzle] = BuildCoords(operation);
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const auto [coords, temporary, swizzle] = BuildCoords(operation);
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std::string comp;
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if (!meta.sampler.is_shadow) {
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@ -1907,7 +1916,7 @@ std::string ARBDecompiler::TextureGather(Operation operation) {
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AddLine("TXG.F {}, {}, texture[{}]{}, {}{};", temporary, temporary, sampler_id, comp,
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TextureType(meta), BuildAoffi(operation));
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AddLine("MOV.U {}.x, {}.{};", temporary, temporary, Swizzle(meta.element));
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AddLine("MOV.U {}.x, {}.{};", temporary, coords, Swizzle(meta.element));
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return fmt::format("{}.x", temporary);
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}
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@ -1945,13 +1954,13 @@ std::string ARBDecompiler::TextureQueryLod(Operation operation) {
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std::string ARBDecompiler::TexelFetch(Operation operation) {
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const auto& meta = std::get<MetaTexture>(operation.GetMeta());
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const u32 sampler_id = device.GetBaseBindings(stage).sampler + meta.sampler.index;
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const auto [temporary, swizzle] = BuildCoords(operation);
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const auto [coords, temporary, swizzle] = BuildCoords(operation);
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if (!meta.sampler.is_buffer) {
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ASSERT(swizzle < 4);
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AddLine("MOV.F {}.w, {};", temporary, Visit(meta.lod));
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}
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AddLine("TXF.F {}, {}, texture[{}], {}{};", temporary, temporary, sampler_id, TextureType(meta),
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AddLine("TXF.F {}, {}, texture[{}], {}{};", temporary, coords, sampler_id, TextureType(meta),
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BuildAoffi(operation));
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AddLine("MOV.U {}.x, {}.{};", temporary, temporary, Swizzle(meta.element));
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return fmt::format("{}.x", temporary);
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@ -1962,7 +1971,7 @@ std::string ARBDecompiler::TextureGradient(Operation operation) {
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const u32 sampler_id = device.GetBaseBindings(stage).sampler + meta.sampler.index;
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const std::string ddx = AllocVectorTemporary();
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const std::string ddy = AllocVectorTemporary();
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const std::string coord = BuildCoords(operation).first;
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const std::string coord = std::get<1>(BuildCoords(operation));
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const std::size_t num_components = meta.derivates.size() / 2;
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for (std::size_t index = 0; index < num_components; ++index) {
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@ -2056,15 +2056,19 @@ private:
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}
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Expression Texture(Operation operation) {
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const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
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ASSERT(meta);
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std::string expr = GenerateTexture(
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operation, "", {TextureOffset{}, TextureArgument{Type::Float, meta->bias}});
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if (meta->sampler.is_shadow) {
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expr = "vec4(" + expr + ')';
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const auto meta = std::get<MetaTexture>(operation.GetMeta());
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const bool separate_dc = meta.sampler.type == TextureType::TextureCube &&
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meta.sampler.is_array && meta.sampler.is_shadow;
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// TODO: Replace this with an array and make GenerateTexture use C++20 std::span
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const std::vector<TextureIR> extras{
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TextureOffset{},
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TextureArgument{Type::Float, meta.bias},
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};
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std::string expr = GenerateTexture(operation, "", extras, separate_dc);
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if (meta.sampler.is_shadow) {
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expr = fmt::format("vec4({})", expr);
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}
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return {expr + GetSwizzle(meta->element), Type::Float};
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return {expr + GetSwizzle(meta.element), Type::Float};
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}
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Expression TextureLod(Operation operation) {
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@ -556,7 +556,6 @@ Node4 ShaderIR::GetTextureCode(Instruction instr, TextureType texture_type,
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const bool is_shadow = depth_compare != nullptr;
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const bool is_bindless = bindless_reg.has_value();
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UNIMPLEMENTED_IF(texture_type == TextureType::TextureCube && is_array && is_shadow);
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ASSERT_MSG(texture_type != TextureType::Texture3D || !is_array || !is_shadow,
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"Illegal texture type");
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