Mesa (master): r600g: deal with overflow of VTX/TEX CF clauses.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: 8e8b60588b37e2d9cce7c0c04cdae73ce8206d09
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=8e8b60588b37e2d9cce7c0c04cdae73ce8206d09

Author: Dave Airlie <airlied at redhat.com>
Date:   Tue Sep 21 11:24:49 2010 +1000

r600g: deal with overflow of VTX/TEX CF clauses.

running piglit's texrect-many caused the vtx to overflow.

---

 src/gallium/drivers/r600/r600_asm.c |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_asm.c b/src/gallium/drivers/r600/r600_asm.c
index 8c01987..dcb1b4f 100644
--- a/src/gallium/drivers/r600/r600_asm.c
+++ b/src/gallium/drivers/r600/r600_asm.c
@@ -531,7 +531,8 @@ int r600_bc_add_vtx(struct r600_bc *bc, const struct r600_bc_vtx *vtx)
 	/* cf can contains only alu or only vtx or only tex */
 	if (bc->cf_last == NULL ||
 		(bc->cf_last->inst != V_SQ_CF_WORD1_SQ_CF_INST_VTX &&
-		 bc->cf_last->inst != V_SQ_CF_WORD1_SQ_CF_INST_VTX_TC)) {
+		 bc->cf_last->inst != V_SQ_CF_WORD1_SQ_CF_INST_VTX_TC) ||
+	         bc->force_add_cf) {
 		r = r600_bc_add_cf(bc);
 		if (r) {
 			free(nvtx);
@@ -543,6 +544,8 @@ int r600_bc_add_vtx(struct r600_bc *bc, const struct r600_bc_vtx *vtx)
 	/* each fetch use 4 dwords */
 	bc->cf_last->ndw += 4;
 	bc->ndw += 4;
+	if ((bc->ndw / 4) > 7)
+		bc->force_add_cf = 1;
 	return 0;
 }
 
@@ -557,7 +560,8 @@ int r600_bc_add_tex(struct r600_bc *bc, const struct r600_bc_tex *tex)
 
 	/* cf can contains only alu or only vtx or only tex */
 	if (bc->cf_last == NULL ||
-		bc->cf_last->inst != V_SQ_CF_WORD1_SQ_CF_INST_TEX) {
+		bc->cf_last->inst != V_SQ_CF_WORD1_SQ_CF_INST_TEX ||
+	        bc->force_add_cf) {
 		r = r600_bc_add_cf(bc);
 		if (r) {
 			free(ntex);
@@ -569,6 +573,8 @@ int r600_bc_add_tex(struct r600_bc *bc, const struct r600_bc_tex *tex)
 	/* each texture fetch use 4 dwords */
 	bc->cf_last->ndw += 4;
 	bc->ndw += 4;
+	if ((bc->ndw / 4) > 7)
+		bc->force_add_cf = 1;
 	return 0;
 }