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Fix the calculation of the alpha reference value which negates the

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need for the big nasty fallback - so I've commented out that code.
This commit is contained in:
Alan Hourihane 2005-01-11 17:09:47 +00:00
parent aac4d8857a
commit 5b5e6cc120
1 changed files with 5 additions and 1 deletions
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6
src/mesa/drivers/dri/unichrome/via_state.c
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@ -1299,7 +1299,7 @@ static void viaChooseColorState(GLcontext *ctx)
if (ctx->Color.AlphaEnabled) {
vmesa->regEnable |= HC_HenAT_MASK;
vmesa->regHATMD = (((GLchan)ctx->Color.AlphaRef) & 0xFF) |
vmesa->regHATMD = FLOAT_TO_UBYTE(ctx->Color.AlphaRef) |
((ctx->Color.AlphaFunc - GL_NEVER) << 8);
}
else {
@ -1617,12 +1617,16 @@ void viaValidateState( GLcontext *ctx )
* are incorrectly writen to the z buffer. This is a pretty big
* slowdown, it would be good to find out this wasn't necessary:
*/
#if 0
/* Disabling now, as the main problem was that the alpha reference
* value was calculated incorrectly, it's now fixed.
if (vmesa->viaScreen->deviceID == VIA_CLE266) {
GLboolean fallback = (ctx->Color.AlphaEnabled &&
ctx->Color.AlphaFunc != GL_ALWAYS &&
ctx->Depth.Mask);
FALLBACK( vmesa, VIA_FALLBACK_ALPHATEST, fallback );
}
#endif
vmesa->newEmitState |= vmesa->newState;
vmesa->newState = 0;