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This commit is contained in:
Henrik Rydgård 2020-11-08 10:26:27 +01:00
parent 9105249901
commit d81522af11
1 changed files with 4 additions and 3 deletions
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7
GPU/Common/ReinterpretFramebuffer.cpp
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@ -8,8 +8,9 @@ static const VaryingDef varyings[1] = {
{ "vec2", "v_texcoord", "TEXCOORD0" },
};
// TODO: We could have an option to preserve any extra color precision. But gonna start without it.
// Requires full size integer math.
// TODO: We could possibly have an option to preserve any extra color precision? But gonna start without it.
// Requires full size integer math. It would be possible to make a floating point-only version with lots of
// modulo and stuff, might do it one day.
bool GenerateReinterpretFragmentShader(char *buffer, GEBufferFormat from, GEBufferFormat to, const ShaderLanguageDesc &lang) {
if (!lang.bitwiseOps) {
return false;
@ -30,7 +31,7 @@ bool GenerateReinterpretFragmentShader(char *buffer, GEBufferFormat from, GEBuff
break;
case GE_FORMAT_5551:
writer.C(" uint color = uint(val.r * 31.99) | (uint(val.g * 31.99) << 5) | (uint(val.b * 31.99) << 10);\n");
writer.C(" if (val.a > 128.0) color |= 0x8000U;\n");
writer.C(" if (val.a >= 0.5) color |= 0x8000U;\n");
break;
case GE_FORMAT_565:
writer.C(" uint color = uint(val.r * 31.99) | (uint(val.g * 63.99) << 5) | (uint(val.b * 31.99) << 11);\n");