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rasterizer: Implement combiner buffer input.

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This commit is contained in:
bunnei 2015-05-06 22:18:11 -04:00
parent 44927f0306
commit a806b420a6
2 changed files with 53 additions and 4 deletions
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21
src/video_core/rasterizer.cpp
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@ -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) {