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softjit: Normalize some stencil test patterns.

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Unknown W. Brackets 2021-12-01 21:41:15 -08:00
parent ba69e39256
commit f47fb7e14e
1 changed files with 33 additions and 0 deletions
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33
GPU/Software/FuncId.cpp
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@ -72,9 +72,42 @@ void ComputePixelFuncID(PixelFuncID *id) {
if (gstate.FrameBufFormat() != GE_FORMAT_565 && gstate.getStencilOpZPass() <= GE_STENCILOP_DECR)
id->zPass = gstate.getStencilOpZPass();
// Always treat zPass/zFail the same if there's no depth test.
if (!gstate.isDepthTestEnabled() || gstate.getDepthTestFunction() == GE_COMP_ALWAYS)
id->zFail = id->zPass;
// And same for sFail if there's no stencil test.
if (id->StencilTestFunc() == GE_COMP_ALWAYS)
id->sFail = id->zPass;
// Not equal tests are easier.
if (id->stencilTestRef == 0 && id->StencilTestFunc() == GE_COMP_GREATER)
id->stencilTestFunc = GE_COMP_NOTEQUAL;
// Normalize REPLACE 00 to ZERO, especially if using a mask.
if (gstate.getStencilTestRef() == 0) {
if (id->SFail() == GE_STENCILOP_REPLACE)
id->sFail = GE_STENCILOP_ZERO;
if (id->ZFail() == GE_STENCILOP_REPLACE)
id->zFail = GE_STENCILOP_ZERO;
if (id->ZPass() == GE_STENCILOP_REPLACE)
id->zPass = GE_STENCILOP_ZERO;
}
// For 5551, DECR is also the same as ZERO.
if (id->FBFormat() == GE_FORMAT_5551) {
if (id->SFail() == GE_STENCILOP_DECR)
id->sFail = GE_STENCILOP_ZERO;
if (id->ZFail() == GE_STENCILOP_DECR)
id->zFail = GE_STENCILOP_ZERO;
if (id->ZPass() == GE_STENCILOP_DECR)
id->zPass = GE_STENCILOP_ZERO;
}
// Turn off stencil testing if it's doing nothing.
if (id->SFail() == GE_STENCILOP_KEEP && id->ZFail() == GE_STENCILOP_KEEP && id->ZPass() == GE_STENCILOP_KEEP) {
if (id->StencilTestFunc() == GE_COMP_ALWAYS)
id->stencilTest = false;
}
}
id->depthTestFunc = gstate.isDepthTestEnabled() ? gstate.getDepthTestFunction() : GE_COMP_ALWAYS;