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Pica/TextureUnit: Implement mirrored repeating texture wrapping.
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2 changed files with 12 additions and 3 deletions
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@ -120,6 +120,7 @@ struct Regs {
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enum WrapMode : u32 {
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ClampToEdge = 0,
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Repeat = 2,
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MirroredRepeat = 3,
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};
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INSERT_PADDING_WORDS(0x1);
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@ -251,7 +251,15 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
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return val;
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case Regs::TextureConfig::Repeat:
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return (int)(((unsigned)val) % size);
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return (int)((unsigned)val % size);
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case Regs::TextureConfig::MirroredRepeat:
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{
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int val = (int)((unsigned)val % (2 * size));
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if (val >= size)
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val = 2 * size - 1 - val;
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return val;
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}
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default:
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LOG_ERROR(HW_GPU, "Unknown texture coordinate wrapping mode %x\n", (int)mode);
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