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Diffstat (limited to '')
-rw-r--r-- | src/video_core/renderer_vulkan/vk_shader_decompiler.cpp | 54 |
1 files changed, 52 insertions, 2 deletions
diff --git a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp index a20452b87..356d2ab7a 100644 --- a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp +++ b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp @@ -2075,6 +2075,55 @@ private: return {}; } + void AlphaTest(const Id& pointer) { + const Id true_label = OpLabel(); + const Id skip_label = OpLabel(); + Id condition; + switch (specialization.alpha_test_func) { + case VK_COMPARE_OP_NEVER: + condition = Constant(t_float, false); // Never true + break; + case VK_COMPARE_OP_LESS: + condition = OpFOrdLessThan(t_bool, Constant(t_float, specialization.alpha_test_ref), + OpLoad(t_float, pointer)); + break; + case VK_COMPARE_OP_EQUAL: + condition = OpFOrdEqual(t_bool, Constant(t_float, specialization.alpha_test_ref), + OpLoad(t_float, pointer)); + break; + case VK_COMPARE_OP_LESS_OR_EQUAL: + condition = OpFOrdLessThanEqual( + t_bool, Constant(t_float, specialization.alpha_test_ref), OpLoad(t_float, pointer)); + break; + case VK_COMPARE_OP_GREATER: + // Note: requires "Equal" to properly work for ssbu. perhaps a precision issue + condition = OpFOrdGreaterThanEqual( + t_bool, Constant(t_float, specialization.alpha_test_ref), OpLoad(t_float, pointer)); + break; + case VK_COMPARE_OP_NOT_EQUAL: + // Note: not accurate when tested against a unit test + // TODO: confirm if used by games + condition = OpFOrdNotEqual(t_bool, Constant(t_float, specialization.alpha_test_ref), + OpLoad(t_float, pointer)); + break; + case VK_COMPARE_OP_GREATER_OR_EQUAL: + condition = OpFOrdGreaterThanEqual( + t_bool, Constant(t_float, specialization.alpha_test_ref), OpLoad(t_float, pointer)); + break; + case VK_COMPARE_OP_ALWAYS: + condition = Constant(t_bool, true); // Always true + break; + default: + LOG_WARNING(Render_Vulkan, "Unimplemented alpha test function"); + condition = Constant(t_bool, true); // Always true + break; + } + OpBranchConditional(condition, true_label, skip_label); + AddLabel(true_label); + OpKill(); + AddLabel(skip_label); + } + void PreExit() { if (stage == ShaderType::Vertex && specialization.ndc_minus_one_to_one) { const u32 position_index = out_indices.position.value(); @@ -2097,8 +2146,6 @@ 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 +2157,9 @@ private: } const Id pointer = AccessElement(t_out_float, frag_colors[rt], component); OpStore(pointer, SafeGetRegister(current_reg)); + if (specialization.alpha_test_enabled && component == 3) { + AlphaTest(pointer); + } ++current_reg; } } |