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Rasterizer: Implement the other color and alpha modifiers.

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This commit is contained in:
bunnei 2015-02-03 18:32:29 -05:00
parent 8c93a28fed
commit 1eb591d6fd
2 changed files with 68 additions and 57 deletions
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28
src/video_core/pica.h
View file

@ -233,19 +233,29 @@ struct Regs {
};
enum class ColorModifier : u32 {
SourceColor = 0,
OneMinusSourceColor = 1,
SourceAlpha = 2,
OneMinusSourceAlpha = 3,
SourceColor = 0x0,
OneMinusSourceColor = 0x1,
SourceAlpha = 0x2,
OneMinusSourceAlpha = 0x3,
SourceRed = 0x4,
OneMinusSourceRed = 0x5,
// Other values seem to be non-standard extensions
SourceGreen = 0x8,
OneMinusSourceGreen = 0x9,
SourceBlue = 0xc,
OneMinusSourceBlue = 0xd,
};
enum class AlphaModifier : u32 {
SourceAlpha = 0,
OneMinusSourceAlpha = 1,
// Other values seem to be non-standard extensions
SourceAlpha = 0x0,
OneMinusSourceAlpha = 0x1,
SourceRed = 0x2,
OneMinusSourceRed = 0x3,
SourceGreen = 0x4,
OneMinusSourceGreen = 0x5,
SourceBlue = 0x6,
OneMinusSourceBlue = 0x7,
};
enum class Operation : u32 {

97
src/video_core/rasterizer.cpp
View file

@ -260,7 +260,7 @@ void ProcessTriangle(const VertexShader::OutputVertex& v0,
using AlphaModifier = Regs::TevStageConfig::AlphaModifier;
using Operation = Regs::TevStageConfig::Operation;
auto GetColorSource = [&](Source source) -> Math::Vec4<u8> {
auto GetSource = [&](Source source) -> Math::Vec4<u8> {
switch (source) {
case Source::PrimaryColor:
return primary_color;
@ -287,36 +287,8 @@ void ProcessTriangle(const VertexShader::OutputVertex& v0,
}
};
auto GetAlphaSource = [&](Source source) -> u8 {
switch (source) {
case Source::PrimaryColor:
return primary_color.a();
case Source::Texture0:
return texture_color[0].a();
case Source::Texture1:
return texture_color[1].a();
case Source::Texture2:
return texture_color[2].a();
case Source::Constant:
return tev_stage.const_a;
case Source::Previous:
return combiner_output.a();
default:
LOG_ERROR(HW_GPU, "Unknown alpha combiner source %d\n", (int)source);
_dbg_assert_(HW_GPU, 0);
return 0;
}
};
static auto GetColorModifier = [](ColorModifier factor, const Math::Vec4<u8>& values) -> Math::Vec3<u8> {
switch (factor)
{
switch (factor) {
case ColorModifier::SourceColor:
return values.rgb();
@ -324,27 +296,56 @@ void ProcessTriangle(const VertexShader::OutputVertex& v0,
return (Math::Vec3<u8>(255, 255, 255) - values.rgb()).Cast<u8>();
case ColorModifier::SourceAlpha:
return { values.a(), values.a(), values.a() };
return values.aaa();
default:
LOG_ERROR(HW_GPU, "Unknown color factor %d\n", (int)factor);
_dbg_assert_(HW_GPU, 0);
return {};
case ColorModifier::OneMinusSourceAlpha:
return (Math::Vec3<u8>(255, 255, 255) - values.aaa()).Cast<u8>();
case ColorModifier::SourceRed:
return values.rrr();
case ColorModifier::OneMinusSourceRed:
return (Math::Vec3<u8>(255, 255, 255) - values.rrr()).Cast<u8>();
case ColorModifier::SourceGreen:
return values.ggg();
case ColorModifier::OneMinusSourceGreen:
return (Math::Vec3<u8>(255, 255, 255) - values.ggg()).Cast<u8>();
case ColorModifier::SourceBlue:
return values.bbb();
case ColorModifier::OneMinusSourceBlue:
return (Math::Vec3<u8>(255, 255, 255) - values.bbb()).Cast<u8>();
}
};
static auto GetAlphaModifier = [](AlphaModifier factor, u8 value) -> u8 {
static auto GetAlphaModifier = [](AlphaModifier factor, const Math::Vec4<u8>& values) -> u8 {
switch (factor) {
case AlphaModifier::SourceAlpha:
return value;
return values.a();
case AlphaModifier::OneMinusSourceAlpha:
return 255 - value;
return 255 - values.a();
default:
LOG_ERROR(HW_GPU, "Unknown alpha factor %d\n", (int)factor);
_dbg_assert_(HW_GPU, 0);
return 0;
case AlphaModifier::SourceRed:
return values.r();
case AlphaModifier::OneMinusSourceRed:
return 255 - values.r();
case AlphaModifier::SourceGreen:
return values.g();
case AlphaModifier::OneMinusSourceGreen:
return 255 - values.g();
case AlphaModifier::SourceBlue:
return values.b();
case AlphaModifier::OneMinusSourceBlue:
return 255 - values.b();
}
};
@ -414,17 +415,17 @@ void ProcessTriangle(const VertexShader::OutputVertex& v0,
// combiner_output.rgb(), but instead store it in a temporary variable until
// alpha combining has been done.
Math::Vec3<u8> color_result[3] = {
GetColorModifier(tev_stage.color_modifier1, GetColorSource(tev_stage.color_source1)),
GetColorModifier(tev_stage.color_modifier2, GetColorSource(tev_stage.color_source2)),
GetColorModifier(tev_stage.color_modifier3, GetColorSource(tev_stage.color_source3))
GetColorModifier(tev_stage.color_modifier1, GetSource(tev_stage.color_source1)),
GetColorModifier(tev_stage.color_modifier2, GetSource(tev_stage.color_source2)),
GetColorModifier(tev_stage.color_modifier3, GetSource(tev_stage.color_source3))
};
auto color_output = ColorCombine(tev_stage.color_op, color_result);
// alpha combiner
std::array<u8,3> alpha_result = {
GetAlphaModifier(tev_stage.alpha_modifier1, GetAlphaSource(tev_stage.alpha_source1)),
GetAlphaModifier(tev_stage.alpha_modifier2, GetAlphaSource(tev_stage.alpha_source2)),
GetAlphaModifier(tev_stage.alpha_modifier3, GetAlphaSource(tev_stage.alpha_source3))
GetAlphaModifier(tev_stage.alpha_modifier1, GetSource(tev_stage.alpha_source1)),
GetAlphaModifier(tev_stage.alpha_modifier2, GetSource(tev_stage.alpha_source2)),
GetAlphaModifier(tev_stage.alpha_modifier3, GetSource(tev_stage.alpha_source3))
};
auto alpha_output = AlphaCombine(tev_stage.alpha_op, alpha_result);