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i965: Set Address Modify Enable in VERTEX_BUFFER on Ivybridge. 

Otherwise, Ivybridge seems to ignore the newly supplied data, giving us
rubbish for vertices.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Kenneth Graunke 2011-04-19 15:38:10 -07:00
parent 09d881bf74
commit 62b79b4bb9
2 changed files with 4 additions and 0 deletions
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1
src/mesa/drivers/dri/i965/brw_defines.h
View File

@ -860,6 +860,7 @@
# define BRW_VB0_ACCESS_INSTANCEDATA (1 << 26)
# define GEN6_VB0_ACCESS_VERTEXDATA (0 << 20)
# define GEN6_VB0_ACCESS_INSTANCEDATA (1 << 20)
# define GEN7_VB0_ADDRESS_MODIFYENABLE (1 << 14)
# define BRW_VB0_PITCH_SHIFT 0
#define CMD_VERTEX_ELEMENT 0x7809

3
src/mesa/drivers/dri/i965/brw_draw_upload.c
View File

@ -570,6 +570,9 @@ static void brw_emit_vertices(struct brw_context *brw)
dw0 = BRW_VB0_ACCESS_VERTEXDATA | (i << BRW_VB0_INDEX_SHIFT);
}
if (intel->gen >= 7)
dw0 |= GEN7_VB0_ADDRESS_MODIFYENABLE;
OUT_BATCH(dw0 | (buffer->stride << BRW_VB0_PITCH_SHIFT));
OUT_RELOC(buffer->bo, I915_GEM_DOMAIN_VERTEX, 0, buffer->offset);
if (intel->gen >= 5) {