Mesa (master): freedreno/ir3: lower TXP as needed

[Rob Clark]

Module: Mesa
Branch: master
Commit: eb6fd3b8eb9c19bb501a091d1696e5db1ac4c690
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=eb6fd3b8eb9c19bb501a091d1696e5db1ac4c690

Author: Rob Clark <robclark at freedesktop.org>
Date:   Sat Dec  6 15:24:23 2014 -0500

freedreno/ir3: lower TXP as needed

On a3xx, lower TXP for 3D textures, on a4xx lower all TXP.

Signed-off-by: Rob Clark <robclark at freedesktop.org>

---

 src/gallium/drivers/freedreno/ir3/ir3_compiler.c |    8 ++++++++
 src/gallium/drivers/freedreno/ir3/ir3_shader.c   |   12 ++++++++++--
 src/gallium/drivers/freedreno/ir3/ir3_shader.h   |    2 +-
 3 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/freedreno/ir3/ir3_compiler.c b/src/gallium/drivers/freedreno/ir3/ir3_compiler.c
index 6cc21ac..ade4b1c 100644
--- a/src/gallium/drivers/freedreno/ir3/ir3_compiler.c
+++ b/src/gallium/drivers/freedreno/ir3/ir3_compiler.c
@@ -170,6 +170,14 @@ compile_init(struct ir3_compile_context *ctx, struct ir3_shader_variant *so,
 		break;
 	}
 
+	if (ir3_shader_gpuid(so->shader) >= 400) {
+		/* a4xx seems to have *no* sam.p */
+		lconfig.lower_TXP = ~0;  /* lower all txp */
+	} else {
+		/* a3xx just needs to avoid sam.p for 3d tex */
+		lconfig.lower_TXP = (1 << TGSI_TEXTURE_3D);
+	}
+
 	ctx->tokens = tgsi_transform_lowering(&lconfig, tokens, &ctx->info);
 	ctx->free_tokens = !!ctx->tokens;
 	if (!ctx->tokens) {
diff --git a/src/gallium/drivers/freedreno/ir3/ir3_shader.c b/src/gallium/drivers/freedreno/ir3/ir3_shader.c
index 0c74f2f..c21d0a2 100644
--- a/src/gallium/drivers/freedreno/ir3/ir3_shader.c
+++ b/src/gallium/drivers/freedreno/ir3/ir3_shader.c
@@ -54,9 +54,10 @@ static void
 assemble_variant(struct ir3_shader_variant *v)
 {
 	struct fd_context *ctx = fd_context(v->shader->pctx);
+	uint32_t gpu_id = ir3_shader_gpuid(v->shader);
 	uint32_t sz, *bin;
 
-	bin = ir3_assemble(v->ir, &v->info, ctx->screen->gpu_id);
+	bin = ir3_assemble(v->ir, &v->info, gpu_id);
 	sz = v->info.sizedwords * 4;
 
 	v->bo = fd_bo_new(ctx->dev, sz,
@@ -67,7 +68,7 @@ assemble_variant(struct ir3_shader_variant *v)
 
 	free(bin);
 
-	if (ctx->screen->gpu_id >= 400) {
+	if (gpu_id >= 400) {
 		v->instrlen = v->info.sizedwords / (2 * 16);
 	} else {
 		v->instrlen = v->info.sizedwords / (2 * 4);
@@ -177,6 +178,13 @@ fail:
 	return NULL;
 }
 
+uint32_t
+ir3_shader_gpuid(struct ir3_shader *shader)
+{
+	struct fd_context *ctx = fd_context(shader->pctx);
+	return ctx->screen->gpu_id;
+}
+
 struct ir3_shader_variant *
 ir3_shader_variant(struct ir3_shader *shader, struct ir3_shader_key key)
 {
diff --git a/src/gallium/drivers/freedreno/ir3/ir3_shader.h b/src/gallium/drivers/freedreno/ir3/ir3_shader.h
index 89442ce..fcd5895 100644
--- a/src/gallium/drivers/freedreno/ir3/ir3_shader.h
+++ b/src/gallium/drivers/freedreno/ir3/ir3_shader.h
@@ -214,7 +214,7 @@ struct ir3_shader {
 struct ir3_shader * ir3_shader_create(struct pipe_context *pctx,
 		const struct tgsi_token *tokens, enum shader_t type);
 void ir3_shader_destroy(struct ir3_shader *shader);
-
+uint32_t ir3_shader_gpuid(struct ir3_shader *shader);
 struct ir3_shader_variant * ir3_shader_variant(struct ir3_shader *shader,
 		struct ir3_shader_key key);