diff options
Diffstat (limited to '')
5 files changed, 65 insertions, 3 deletions
diff --git a/src/video_core/renderer_vulkan/fixed_pipeline_state.cpp b/src/video_core/renderer_vulkan/fixed_pipeline_state.cpp index da5c550ea..fffae528e 100644 --- a/src/video_core/renderer_vulkan/fixed_pipeline_state.cpp +++ b/src/video_core/renderer_vulkan/fixed_pipeline_state.cpp @@ -8,6 +8,7 @@ #include <boost/functional/hash.hpp> +#include "common/bit_cast.h" #include "common/cityhash.h" #include "common/common_types.h" #include "video_core/renderer_vulkan/fixed_pipeline_state.h" @@ -60,7 +61,13 @@ void FixedPipelineState::Fill(const Maxwell& regs, bool has_extended_dynamic_sta rasterize_enable.Assign(regs.rasterize_enable != 0 ? 1 : 0); topology.Assign(regs.draw.topology); - std::memcpy(&point_size, ®s.point_size, sizeof(point_size)); // TODO: C++20 std::bit_cast + alpha_raw = 0; + const auto test_func = + regs.alpha_test_enabled == 1 ? regs.alpha_test_func : Maxwell::ComparisonOp::Always; + alpha_test_func.Assign(PackComparisonOp(test_func)); + alpha_test_ref = Common::BitCast<u32>(regs.alpha_test_ref); + + point_size = Common::BitCast<u32>(regs.point_size); for (std::size_t index = 0; index < Maxwell::NumVertexArrays; ++index) { binding_divisors[index] = diff --git a/src/video_core/renderer_vulkan/fixed_pipeline_state.h b/src/video_core/renderer_vulkan/fixed_pipeline_state.h index 2c18eeaae..42480e8d0 100644 --- a/src/video_core/renderer_vulkan/fixed_pipeline_state.h +++ b/src/video_core/renderer_vulkan/fixed_pipeline_state.h @@ -187,6 +187,13 @@ struct FixedPipelineState { BitField<23, 1, u32> rasterize_enable; BitField<24, 4, Maxwell::PrimitiveTopology> topology; }; + + u32 alpha_test_ref; ///< Alpha test reference value + union { + u32 alpha_raw; + BitField<0, 3, u32> alpha_test_func; + }; + u32 point_size; std::array<u32, Maxwell::NumVertexArrays> binding_divisors; std::array<VertexAttribute, Maxwell::NumVertexAttributes> attributes; diff --git a/src/video_core/renderer_vulkan/vk_pipeline_cache.cpp b/src/video_core/renderer_vulkan/vk_pipeline_cache.cpp index dedc9c466..f9efe526d 100644 --- a/src/video_core/renderer_vulkan/vk_pipeline_cache.cpp +++ b/src/video_core/renderer_vulkan/vk_pipeline_cache.cpp @@ -7,6 +7,7 @@ #include <memory> #include <vector> +#include "common/bit_cast.h" #include "common/microprofile.h" #include "core/core.h" #include "core/memory.h" @@ -344,6 +345,11 @@ VKPipelineCache::DecompileShaders(const FixedPipelineState& fixed_state) { } specialization.ndc_minus_one_to_one = fixed_state.ndc_minus_one_to_one; + // Alpha test + specialization.alpha_test_func = + FixedPipelineState::UnpackComparisonOp(fixed_state.alpha_test_func.Value()); + specialization.alpha_test_ref = Common::BitCast<float>(fixed_state.alpha_test_ref); + SPIRVProgram program; std::vector<VkDescriptorSetLayoutBinding> bindings; diff --git a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp index a20452b87..1c52f40bb 100644 --- a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp +++ b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp @@ -2075,6 +2075,45 @@ private: return {}; } + Id MaxwellToSpirvComparison(Maxwell::ComparisonOp compare_op, Id operand_1, Id operand_2) { + using Compare = Maxwell::ComparisonOp; + switch (compare_op) { + case Compare::NeverOld: + return v_false; // Never let the test pass + case Compare::LessOld: + return OpFOrdLessThan(t_bool, operand_1, operand_2); + case Compare::EqualOld: + return OpFOrdEqual(t_bool, operand_1, operand_2); + case Compare::LessEqualOld: + return OpFOrdLessThanEqual(t_bool, operand_1, operand_2); + case Compare::GreaterOld: + return OpFOrdGreaterThan(t_bool, operand_1, operand_2); + case Compare::NotEqualOld: + return OpFOrdNotEqual(t_bool, operand_1, operand_2); + case Compare::GreaterEqualOld: + return OpFOrdGreaterThanEqual(t_bool, operand_1, operand_2); + default: + UNREACHABLE(); + } + } + + void AlphaTest(Id pointer) { + if (specialization.alpha_test_func == Maxwell::ComparisonOp::AlwaysOld) { + return; + } + const Id true_label = OpLabel(); + const Id discard_label = OpLabel(); + const Id alpha_reference = Constant(t_float, specialization.alpha_test_ref); + const Id alpha_value = OpLoad(t_float, pointer); + const Id condition = + MaxwellToSpirvComparison(specialization.alpha_test_func, alpha_value, alpha_reference); + + OpBranchConditional(condition, true_label, discard_label); + AddLabel(discard_label); + OpKill(); + AddLabel(true_label); + } + void PreExit() { if (stage == ShaderType::Vertex && specialization.ndc_minus_one_to_one) { const u32 position_index = out_indices.position.value(); @@ -2097,8 +2136,6 @@ private: UNIMPLEMENTED_IF_MSG(header.ps.omap.sample_mask != 0, "Sample mask write is unimplemented"); - // TODO(Rodrigo): Alpha testing - // Write the color outputs using the data in the shader registers, disabled // rendertargets/components are skipped in the register assignment. u32 current_reg = 0; @@ -2110,6 +2147,9 @@ private: } const Id pointer = AccessElement(t_out_float, frag_colors[rt], component); OpStore(pointer, SafeGetRegister(current_reg)); + if (rt == 0 && component == 3) { + AlphaTest(pointer); + } ++current_reg; } } diff --git a/src/video_core/renderer_vulkan/vk_shader_decompiler.h b/src/video_core/renderer_vulkan/vk_shader_decompiler.h index 2b0e90396..cd3d0a415 100644 --- a/src/video_core/renderer_vulkan/vk_shader_decompiler.h +++ b/src/video_core/renderer_vulkan/vk_shader_decompiler.h @@ -95,6 +95,8 @@ struct Specialization final { std::bitset<Maxwell::NumVertexAttributes> enabled_attributes; std::array<Maxwell::VertexAttribute::Type, Maxwell::NumVertexAttributes> attribute_types{}; bool ndc_minus_one_to_one{}; + float alpha_test_ref{}; + Maxwell::ComparisonOp alpha_test_func{}; }; // Old gcc versions don't consider this trivially copyable. // static_assert(std::is_trivially_copyable_v<Specialization>); |