Comment # 31
on bug 110897
from Richard Thier
Created attachment 144545 [details]
Really no cmask ram it seems
I have faked to have hiz ram and cmask ram just to see what happens.
When I am turning on MSAA now I get this glitches from the shared screenshot so
I guess it is right that my card is just not having CMASK_RAM.
122 case CHIP_RS480:
123 caps->zmask_ram = RV3xx_ZMASK_SIZE;
124 caps->has_cmask = TRUE; /* guessed because there is also HiZ */
125 caps->hiz_ram = R300_HIZ_LIMIT;
126 break;
hiz_ram faking seems to have no effect whatsoever.
I have also tried this hack - but it did not help:
diff --git a/src/gallium/drivers/r300/r300_emit.c
b/src/gallium/drivers/r300/r300_emit.c
index 80c959b95d0..48fafecfdda 100644
--- a/src/gallium/drivers/r300/r300_emit.c
+++ b/src/gallium/drivers/r300/r300_emit.c
@@ -1224,6 +1224,10 @@ void r300_emit_hiz_clear(struct r300_context *r300,
unsigned size, void *state)
tex = r300_resource(fb->zsbuf->texture);
BEGIN_CS(size);
+ // FIXME: Remove this hack!
+ OUT_CS_REG(R300_ZB_ZCACHE_CTLSTAT,
+ R300_ZB_ZCACHE_CTLSTAT_ZC_FLUSH_FLUSH_AND_FREE |
+ R300_ZB_ZCACHE_CTLSTAT_ZC_FREE_FREE);
OUT_CS_PKT3(R300_PACKET3_3D_CLEAR_HIZ, 2);
OUT_CS(0);
OUT_CS(tex->tex.hiz_dwords[fb->zsbuf->u.tex.level]);
@@ -1246,6 +1250,9 @@ void r300_emit_zmask_clear(struct r300_context *r300,
unsigned size, void *state
tex = r300_resource(fb->zsbuf->texture);
BEGIN_CS(size);
+ OUT_CS_REG(R300_ZB_ZCACHE_CTLSTAT,
+ R300_ZB_ZCACHE_CTLSTAT_ZC_FLUSH_FLUSH_AND_FREE |
+ R300_ZB_ZCACHE_CTLSTAT_ZC_FREE_FREE);
OUT_CS_PKT3(R300_PACKET3_3D_CLEAR_ZMASK, 2);
OUT_CS(0);
OUT_CS(tex->tex.zmask_dwords[fb->zsbuf->u.tex.level]);
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