From: Dave Airlie <airl...@redhat.com>
This fixes piglit glsl-1.40-tf-no-position from gpu hanging on my rv635
at least.
Signed-off-by: Dave Airlie <airl...@redhat.com>
---
src/gallium/drivers/r600/r600_shader.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/src/gallium/drivers/r600/r600_shader.c
b/src/gallium/drivers/r600/r600_shader.c
index db45dfd..ab0b5e2 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -1751,6 +1751,23 @@ static int r600_shader_from_tgsi(struct r600_screen
*rscreen,
}
}
+ /* add fake position export */
+ if (ctx.type == TGSI_PROCESSOR_VERTEX && next_pos_base == 60) {
+ memset(&output[j], 0, sizeof(struct
r600_bytecode_output));
+ output[j].gpr = 0;
+ output[j].elem_size = 3;
+ output[j].swizzle_x = 7;
+ output[j].swizzle_y = 7;
+ output[j].swizzle_z = 7;
+ output[j].swizzle_w = 7;
+ output[j].burst_count = 1;
+ output[j].barrier = 1;
+ output[j].type =
V_SQ_CF_ALLOC_EXPORT_WORD0_SQ_EXPORT_POS;
+ output[j].array_base = next_pos_base;
+ output[j].inst = BC_INST(ctx.bc,
V_SQ_CF_ALLOC_EXPORT_WORD1_SQ_CF_INST_EXPORT);
+ j++;
+ }
+
/* add fake param output for vertex shader if no param is exported */
if (ctx.type == TGSI_PROCESSOR_VERTEX && next_param_base == 0) {
memset(&output[j], 0, sizeof(struct
r600_bytecode_output));
--
1.8.1
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