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Dest alpha mask: Try some rules that seem to make sense from what we know now.

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This commit is contained in:
Henrik Rydgard 2013-12-04 13:16:22 +01:00
parent 7881cf24ec
commit 10b9e83353
1 changed files with 13 additions and 0 deletions
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13
GPU/GLES/StateMapping.cpp
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@ -339,6 +339,19 @@ void TransformDrawEngine::ApplyDrawState(int prim) {
bool gmask = ((gstate.pmskc >> 8) & 0xFF) < 128;
bool bmask = ((gstate.pmskc >> 16) & 0xFF) < 128;
bool amask = (gstate.pmska & 0xFF) < 128;
if (gstate.isModeClear()) {
// Clear mode? Obey the clear mode alpha mask (works opposite)
if (gstate.isClearModeAlphaMask()) {
amask = false;
}
} else {
// Let's not write to alpha if stencil isn't enabled.
if (!gstate.isStencilTestEnabled()) {
amask = false;
}
}
glstate.colorMask.set(rmask, gmask, bmask, amask);
// Stencil Test