diff options
Diffstat (limited to 'src/video_core')
| -rw-r--r-- | src/video_core/pica.h | 36 | ||||
| -rw-r--r-- | src/video_core/rasterizer.cpp | 21 |
2 files changed, 53 insertions, 4 deletions
diff --git a/src/video_core/pica.h b/src/video_core/pica.h index e4a91058c..30c8b7816 100644 --- a/src/video_core/pica.h +++ b/src/video_core/pica.h @@ -226,7 +226,8 @@ struct Regs { Texture1 = 0x4, Texture2 = 0x5, Texture3 = 0x6, - // 0x7-0xc = primary color?? + + PreviousBuffer = 0xd, Constant = 0xe, Previous = 0xf, }; @@ -309,11 +310,36 @@ struct Regs { TevStageConfig tev_stage2; INSERT_PADDING_WORDS(0x3); TevStageConfig tev_stage3; - INSERT_PADDING_WORDS(0x13); + INSERT_PADDING_WORDS(0x3); + + union { + // Tev stages 0-3 write their output to the combiner buffer if the corresponding bit in + // these masks are set + BitField< 8, 4, u32> update_mask_rgb; + BitField<12, 4, u32> update_mask_a; + + bool TevStageUpdatesCombinerBufferColor(unsigned stage_index) const { + return (stage_index < 4) && (update_mask_rgb & (1 << stage_index)); + } + + bool TevStageUpdatesCombinerBufferAlpha(unsigned stage_index) const { + return (stage_index < 4) && (update_mask_a & (1 << stage_index)); + } + } tev_combiner_buffer_input; + + INSERT_PADDING_WORDS(0xf); TevStageConfig tev_stage4; INSERT_PADDING_WORDS(0x3); TevStageConfig tev_stage5; - INSERT_PADDING_WORDS(0x3); + + union { + BitField< 0, 8, u32> r; + BitField< 8, 8, u32> g; + BitField<16, 8, u32> b; + BitField<24, 8, u32> a; + } tev_combiner_buffer_color; + + INSERT_PADDING_WORDS(0x2); const std::array<Regs::TevStageConfig,6> GetTevStages() const { return { tev_stage0, tev_stage1, @@ -784,8 +810,10 @@ struct Regs { ADD_FIELD(tev_stage1); ADD_FIELD(tev_stage2); ADD_FIELD(tev_stage3); + ADD_FIELD(tev_combiner_buffer_input); ADD_FIELD(tev_stage4); ADD_FIELD(tev_stage5); + ADD_FIELD(tev_combiner_buffer_color); ADD_FIELD(output_merger); ADD_FIELD(framebuffer); ADD_FIELD(vertex_attributes); @@ -859,8 +887,10 @@ ASSERT_REG_POSITION(tev_stage0, 0xc0); ASSERT_REG_POSITION(tev_stage1, 0xc8); ASSERT_REG_POSITION(tev_stage2, 0xd0); ASSERT_REG_POSITION(tev_stage3, 0xd8); +ASSERT_REG_POSITION(tev_combiner_buffer_input, 0xe0); ASSERT_REG_POSITION(tev_stage4, 0xf0); ASSERT_REG_POSITION(tev_stage5, 0xf8); +ASSERT_REG_POSITION(tev_combiner_buffer_color, 0xfd); ASSERT_REG_POSITION(output_merger, 0x100); ASSERT_REG_POSITION(framebuffer, 0x110); ASSERT_REG_POSITION(vertex_attributes, 0x200); diff --git a/src/video_core/rasterizer.cpp b/src/video_core/rasterizer.cpp index 3b36afad9..7bdb503c8 100644 --- a/src/video_core/rasterizer.cpp +++ b/src/video_core/rasterizer.cpp @@ -376,7 +376,13 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0, // with some basic arithmetic. Alpha combiners can be configured separately but work // analogously. Math::Vec4<u8> combiner_output; - for (const auto& tev_stage : tev_stages) { + Math::Vec4<u8> combiner_buffer = { + registers.tev_combiner_buffer_color.r, registers.tev_combiner_buffer_color.g, + registers.tev_combiner_buffer_color.b, registers.tev_combiner_buffer_color.a + }; + + for (unsigned tev_stage_index = 0; tev_stage_index < tev_stages.size(); ++tev_stage_index) { + const auto& tev_stage = tev_stages[tev_stage_index]; using Source = Regs::TevStageConfig::Source; using ColorModifier = Regs::TevStageConfig::ColorModifier; using AlphaModifier = Regs::TevStageConfig::AlphaModifier; @@ -398,6 +404,9 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0, case Source::Texture2: return texture_color[2]; + case Source::PreviousBuffer: + return combiner_buffer; + case Source::Constant: return {tev_stage.const_r, tev_stage.const_g, tev_stage.const_b, tev_stage.const_a}; @@ -579,6 +588,16 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0, auto alpha_output = AlphaCombine(tev_stage.alpha_op, alpha_result); combiner_output = Math::MakeVec(color_output, alpha_output); + + if (registers.tev_combiner_buffer_input.TevStageUpdatesCombinerBufferColor(tev_stage_index)) { + combiner_buffer.r() = combiner_output.r(); + combiner_buffer.g() = combiner_output.g(); + combiner_buffer.b() = combiner_output.b(); + } + + if (registers.tev_combiner_buffer_input.TevStageUpdatesCombinerBufferAlpha(tev_stage_index)) { + combiner_buffer.a() = combiner_output.a(); + } } if (registers.output_merger.alpha_test.enable) { |