From: Nicolai Hähnle <nicolai.haeh...@amd.com>
---
src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 8a247ea..7720edf 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -6438,21 +6438,22 @@ get_mesa_program_tgsi(struct gl_context *ctx,
v->have_sqrt = pscreen->get_shader_param(pscreen, ptarget,
PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED);
v->have_fma = pscreen->get_shader_param(pscreen, ptarget,
PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED);
_mesa_generate_parameters_list_for_uniforms(shader_program, shader,
prog->Parameters);
/* Remove reads from output registers. */
- lower_output_reads(shader->Stage, shader->ir);
+ if (!pscreen->get_param(pscreen, PIPE_CAP_TGSI_CAN_READ_OUTPUTS))
+ lower_output_reads(shader->Stage, shader->ir);
/* Emit intermediate IR for main(). */
visit_exec_list(shader->ir, v);
#if 0
/* Print out some information (for debugging purposes) used by the
* optimization passes. */
{
int i;
int *first_writes = rzalloc_array(v->mem_ctx, int, v->next_temp);
--
2.7.4
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