Fixes GPU hangs.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107857
Signed-off-by: Józef Kucia <joseph.ku...@gmail.com>
---
src/gallium/drivers/radeonsi/si_shader.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/src/gallium/drivers/radeonsi/si_shader.c
b/src/gallium/drivers/radeonsi/si_shader.c
index 36f58e2ce52c..fedc616ebf61 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -4326,9 +4326,12 @@ static void si_llvm_emit_vertex(struct ac_shader_abi
*abi,
gs_next_vertex = LLVMBuildAdd(ctx->ac.builder, gs_next_vertex,
ctx->i32_1, "");
LLVMBuildStore(ctx->ac.builder, gs_next_vertex,
ctx->gs_next_vertex[stream]);
- /* Signal vertex emission */
- ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_OP_EMIT | AC_SENDMSG_GS |
(stream << 8),
- si_get_gs_wave_id(ctx));
+ /* Signal vertex emission if vertex data was written. */
+ if (offset) {
+ ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_OP_EMIT |
AC_SENDMSG_GS | (stream << 8),
+ si_get_gs_wave_id(ctx));
+ }
+
if (!use_kill)
lp_build_endif(&if_state);
}
--
2.16.4
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