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r300: Fix WRITEMASK handling when writing to result.depth

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This is a necessary change to emit the right instructions when writing
to result.depth.

However, even with this test, Z-write doesn't work properly, and I don't
fully understand why. In addition to this, we'll at least have to disable
early-Z, but even that doesn't seem to be enough.
This commit is contained in:
Nicolai Haehnle
2007-03-19 19:45:45 +01:00
parent b645e8c96d
commit c4bf863f4c
1 changed files with 8 additions and 3 deletions
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src/mesa/drivers/dri/r300/r300_fragprog.c
+8 -3
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@@ -1304,9 +1304,14 @@ static void emit_arith(struct r300_fragment_program *rp,
argc = r300_fpop[op].argc;
if (REG_GET_TYPE(dest) == REG_TYPE_OUTPUT &&
REG_GET_INDEX(dest) == FRAG_RESULT_DEPR)
mask &= ~WRITEMASK_XYZ;
REG_GET_INDEX(dest) == FRAG_RESULT_DEPR) {
if (mask & WRITEMASK_Z) {
mask = WRITEMASK_W;
} else {
return;
}
}
emit_vop = GL_FALSE;
emit_sop = GL_FALSE;
if ((mask & WRITEMASK_XYZ) || vop == R300_FPI0_OUTC_DP3)