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authorNicolai Haehnle <[email protected]>2007-03-19 19:45:45 +0100
committerNicolai Haehnle <[email protected]>2007-03-19 19:48:58 +0100
commitc4bf863f4cb48c2de284933bb1fc725b540ee810 (patch)
tree9af7aa5cfa36293b8736e266a8507196072c0219 /src/mesa/drivers
parentb645e8c96dc1e3b153cf882c8931f10e0c006f04 (diff)
r300: Fix WRITEMASK handling when writing to result.depth
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.
Diffstat (limited to 'src/mesa/drivers')
-rw-r--r--src/mesa/drivers/dri/r300/r300_fragprog.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_fragprog.c b/src/mesa/drivers/dri/r300/r300_fragprog.c
index b0681e28083..fb559e880ae 100644
--- a/src/mesa/drivers/dri/r300/r300_fragprog.c
+++ b/src/mesa/drivers/dri/r300/r300_fragprog.c
@@ -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)