Mesa (master): freedreno/ir3: enable pre-fs texture fetch for a6xx

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Module: Mesa
Branch: master
Commit: f30c256ec05618fb40dccbd94a3434b2f63db478
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f30c256ec05618fb40dccbd94a3434b2f63db478

Author: Rob Clark <robdclark at chromium.org>
Date:   Fri Oct 18 11:30:48 2019 -0700

freedreno/ir3: enable pre-fs texture fetch for a6xx

Signed-off-by: Rob Clark <robdclark at chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg at google.com>

---

 src/freedreno/ir3/ir3_context.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/freedreno/ir3/ir3_context.c b/src/freedreno/ir3/ir3_context.c
index c389f750bd5..a75bbfa1eff 100644
--- a/src/freedreno/ir3/ir3_context.c
+++ b/src/freedreno/ir3/ir3_context.c
@@ -96,6 +96,12 @@ ir3_context_init(struct ir3_compiler *compiler,
 		NIR_PASS_V(ctx->s, nir_opt_constant_folding);
 	}
 
+	/* Enable the texture pre-fetch feature only a4xx onwards.  But
+	 * only enable it on generations that have been tested:
+	 */
+	if ((so->type == MESA_SHADER_FRAGMENT) && (compiler->gpu_id >= 600))
+		NIR_PASS_V(ctx->s, ir3_nir_lower_tex_prefetch);
+
 	NIR_PASS_V(ctx->s, nir_convert_from_ssa, true);
 
 	if (ir3_shader_debug & IR3_DBG_DISASM) {