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D3D11: Approximate AUTO/CONST mip bias.

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These generally work, as long as the mip levels are halving.
This commit is contained in:
Unknown W. Brackets 2017-04-22 18:22:22 -07:00
parent 6aad8ff2a2
commit 8e9945df97
2 changed files with 27 additions and 5 deletions
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6
GPU/Common/TextureCacheCommon.h
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@ -69,8 +69,10 @@ struct SamplerCacheKey {
bool magFilt : 1;
bool sClamp : 1;
bool tClamp : 1;
int lodBias : 4;
int maxLevel : 4;
bool lodAuto : 1;
bool : 1;
int8_t lodBias : 8;
int8_t maxLevel : 4;
};
};

26
GPU/D3D11/TextureCacheD3D11.cpp
View file

@ -88,11 +88,25 @@ ID3D11SamplerState *SamplerCacheD3D11::GetOrCreateSampler(ID3D11Device *device,
#if PPSSPP_PLATFORM(UWP) && PPSSPP_ARCH(ARM)
// For some reason, can't set MaxLOD on mobile.
samp.MaxLOD = FLT_MAX;
#else
samp.MaxLOD = key.maxLevel;
#endif
samp.MinLOD = -FLT_MAX;
samp.MipLODBias = 0.0f;
#else
if (!key.mipEnable) {
samp.MaxLOD = 0.0f;
samp.MinLOD = 0.0f;
samp.MipLODBias = 0.0f;
} else if (key.lodAuto) {
// Auto selected mip + bias.
samp.MaxLOD = key.maxLevel;
samp.MinLOD = 0.0f;
samp.MipLODBias = (float)key.lodBias / 16.0f;
} else {
// Constant mip at bias.
samp.MaxLOD = (float)key.lodBias / 16.0f;
samp.MinLOD = (float)key.lodBias / 16.0f;
samp.MipLODBias = 0.0f;
}
#endif
samp.ComparisonFunc = D3D11_COMPARISON_NEVER;
for (int i = 0; i < 4; i++) {
samp.BorderColor[i] = 1.0f;
@ -169,7 +183,13 @@ void TextureCacheD3D11::UpdateSamplingParams(TexCacheEntry &entry, SamplerCacheK
key.magFilt = magFilt & 1;
key.sClamp = sClamp;
key.tClamp = tClamp;
key.lodBias = (s8)((gstate.texlevel >> 16) & 0xFF);
if (key.lodBias > entry.maxLevel * 16) {
key.lodBias = entry.maxLevel * 16;
}
key.maxLevel = entry.maxLevel;
key.lodAuto = gstate.getTexLevelMode() == GE_TEXLEVEL_MODE_AUTO;
// TODO: GE_TEXLEVEL_MODE_SLOPE
if (entry.framebuffer) {
WARN_LOG_REPORT_ONCE(wrongFramebufAttach, G3D, "Framebuffer still attached in UpdateSamplingParams()?");