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Updated gamma conversion formula for Intel GPUs

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See issue #216.
This commit is contained in:
narzoul 2023-05-14 12:44:14 +02:00
parent 549c4190fa
commit c7702913db
1 changed files with 2 additions and 3 deletions
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5
DDrawCompat/D3dDdi/ShaderBlitter.cpp
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@ -62,7 +62,7 @@ namespace
{ {
for (UINT i = 0; i < 256; ++i) for (UINT i = 0; i < 256; ++i)
{ {
ptr[i] = static_cast<BYTE>(ramp[i] * 0xFF / 0xFFFF); ptr[i] = static_cast<BYTE>(ramp[i] / 256);
} }
} }
} }
@ -693,8 +693,7 @@ namespace D3dDdi
g_isGammaRampDefault = true; g_isGammaRampDefault = true;
for (WORD i = 0; i < 256 && g_isGammaRampDefault; ++i) for (WORD i = 0; i < 256 && g_isGammaRampDefault; ++i)
{ {
const WORD defaultRamp = i * 0xFFFF / 0xFF; g_isGammaRampDefault = i == ramp.Red[i] / 256 && i == ramp.Green[i] / 256 && i == ramp.Blue[i] / 256;
g_isGammaRampDefault = defaultRamp == ramp.Red[i] && defaultRamp == ramp.Green[i] && defaultRamp == ramp.Blue[i];
} }
g_isGammaRampInvalidated = !g_isGammaRampDefault; g_isGammaRampInvalidated = !g_isGammaRampDefault;
} }