From: Dave Airlie <airl...@redhat.com>
We need to emit at least one cut/emit in every
geometry shader, the easiest workaround it to
stick a single CUT at the top of each geom shader.
Signed-off-by: Dave Airlie <airl...@redhat.com>
---
src/gallium/drivers/r600/r600_shader.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/src/gallium/drivers/r600/r600_shader.c
b/src/gallium/drivers/r600/r600_shader.c
index fc6335a..6646a7e 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -2205,6 +2205,11 @@ static int r600_shader_from_tgsi(struct r600_context
*rctx,
if (ctx.type == TGSI_PROCESSOR_GEOMETRY) {
struct r600_bytecode_alu alu;
int r;
+
+ /* GS thread with no output workaround - emit a cut at
start of GS */
+ if (ctx.bc->chip_class == R600)
+ r600_bytecode_add_cfinst(ctx.bc,
CF_OP_CUT_VERTEX);
+
for (j = 0; j < 4; j++) {
memset(&alu, 0, sizeof(struct
r600_bytecode_alu));
alu.op = ALU_OP1_MOV;
--
2.1.0
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