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Pica/TextureUnit: Implement mirrored repeating texture wrapping.

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This commit is contained in:
Tony Wasserka 2015-01-03 13:33:57 +01:00
parent 8bd7a896ea
commit 6ca752ccbc
2 changed files with 12 additions and 3 deletions
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5
src/video_core/pica.h
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@ -118,8 +118,9 @@ struct Regs {
struct TextureConfig { struct TextureConfig {
enum WrapMode : u32 { enum WrapMode : u32 {
ClampToEdge = 0, ClampToEdge = 0,
Repeat = 2, Repeat = 2,
MirroredRepeat = 3,
}; };
INSERT_PADDING_WORDS(0x1); INSERT_PADDING_WORDS(0x1);

10
src/video_core/rasterizer.cpp
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@ -251,7 +251,15 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
return val; return val;
case Regs::TextureConfig::Repeat: case Regs::TextureConfig::Repeat:
return (int)(((unsigned)val) % size); return (int)((unsigned)val % size);
case Regs::TextureConfig::MirroredRepeat:
{
int val = (int)((unsigned)val % (2 * size));
if (val >= size)
val = 2 * size - 1 - val;
return val;
}
default: default:
LOG_ERROR(HW_GPU, "Unknown texture coordinate wrapping mode %x\n", (int)mode); LOG_ERROR(HW_GPU, "Unknown texture coordinate wrapping mode %x\n", (int)mode);