r600g: don't snoop context state while building shaders

Let's use the shader key describing the state.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

3 files changed, 43 insertions, 28 deletions

diff --git a/src/gallium/drivers/r600/r600_pipe.h b/src/gallium/drivers/r600/r600_pipe.h
index a60a498c9f9..99c9e144da8 100644
--- a/src/gallium/drivers/r600/r600_pipe.h
+++ b/src/gallium/drivers/r600/r600_pipe.h
@@ -254,6 +254,13 @@ struct r600_pipe_shader_selector {
 	unsigned	nr_ps_max_color_exports;
 };
 
+struct r600_shader_key {
+	unsigned color_two_side:1;
+	unsigned alpha_to_one:1;
+	unsigned dual_src_blend:1;
+	unsigned nr_cbufs:4;
+};
+
 struct r600_pipe_shader {
 	struct r600_pipe_shader_selector *selector;
 	struct r600_pipe_shader	*next_variant;
@@ -266,7 +273,7 @@ struct r600_pipe_shader {
 	unsigned	flatshade;
 	unsigned	pa_cl_vs_out_cntl;
 	unsigned	nr_ps_color_outputs;
-	unsigned	key;
+	struct r600_shader_key	key;
 	unsigned		db_shader_control;
 	unsigned		ps_depth_export;
 };
@@ -567,7 +574,9 @@ void r600_resume_timer_queries(struct r600_context *ctx);
 void r600_init_context_resource_functions(struct r600_context *r600);
 
 /* r600_shader.c */
-int r600_pipe_shader_create(struct pipe_context *ctx, struct r600_pipe_shader *shader);
+int r600_pipe_shader_create(struct pipe_context *ctx,
+			    struct r600_pipe_shader *shader,
+			    struct r600_shader_key key);
 #ifdef HAVE_OPENCL
 int r600_compute_shader_create(struct pipe_context * ctx,
 	LLVMModuleRef mod,  struct r600_bytecode * bytecode);
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index 8288c040a63..11cf235c929 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -103,9 +103,13 @@ static int r600_pipe_shader(struct pipe_context *ctx, struct r600_pipe_shader *s
 	return 0;
 }
 
-static int r600_shader_from_tgsi(struct r600_context * rctx, struct r600_pipe_shader *pipeshader);
+static int r600_shader_from_tgsi(struct r600_screen *rscreen,
+				 struct r600_pipe_shader *pipeshader,
+				 struct r600_shader_key key);
 
-int r600_pipe_shader_create(struct pipe_context *ctx, struct r600_pipe_shader *shader)
+int r600_pipe_shader_create(struct pipe_context *ctx,
+			    struct r600_pipe_shader *shader,
+			    struct r600_shader_key key)
 {
 	static int dump_shaders = -1;
 	struct r600_context *rctx = (struct r600_context *)ctx;
@@ -136,7 +140,7 @@ int r600_pipe_shader_create(struct pipe_context *ctx, struct r600_pipe_shader *s
 			}
 		}
 	}
-	r = r600_shader_from_tgsi(rctx, shader);
+	r = r600_shader_from_tgsi(rctx->screen, shader, key);
 	if (r) {
 		R600_ERR("translation from TGSI failed !\n");
 		return r;
@@ -1165,7 +1169,9 @@ static int process_twoside_color_inputs(struct r600_shader_ctx *ctx)
 	return 0;
 }
 
-static int r600_shader_from_tgsi(struct r600_context * rctx, struct r600_pipe_shader *pipeshader)
+static int r600_shader_from_tgsi(struct r600_screen *rscreen,
+				 struct r600_pipe_shader *pipeshader,
+				 struct r600_shader_key key)
 {
 	struct r600_shader *shader = &pipeshader->shader;
 	struct tgsi_token *tokens = pipeshader->selector->tokens;
@@ -1190,7 +1196,7 @@ static int r600_shader_from_tgsi(struct r600_context * rctx, struct r600_pipe_sh
 	ctx.shader = shader;
 	ctx.native_integers = true;
 
-	r600_bytecode_init(ctx.bc, rctx->chip_class, rctx->family);
+	r600_bytecode_init(ctx.bc, rscreen->chip_class, rscreen->family);
 	ctx.tokens = tokens;
 	tgsi_scan_shader(tokens, &ctx.info);
 	tgsi_parse_init(&ctx.parse, tokens);
@@ -1206,7 +1212,7 @@ static int r600_shader_from_tgsi(struct r600_context * rctx, struct r600_pipe_sh
 	shader->nr_ps_color_exports = 0;
 	shader->nr_ps_max_color_exports = 0;
 
-	shader->two_side = (ctx.type == TGSI_PROCESSOR_FRAGMENT) && rctx->two_side;
+	shader->two_side = key.color_two_side;
 
 	/* register allocations */
 	/* Values [0,127] correspond to GPR[0..127].
@@ -1340,7 +1346,7 @@ static int r600_shader_from_tgsi(struct r600_context * rctx, struct r600_pipe_sh
 		}
 	}
 
-	if (shader->fs_write_all && rctx->chip_class >= EVERGREEN)
+	if (shader->fs_write_all && rscreen->chip_class >= EVERGREEN)
 		shader->nr_ps_max_color_exports = 8;
 
 	if (ctx.fragcoord_input >= 0) {
@@ -1583,17 +1589,17 @@ static int r600_shader_from_tgsi(struct r600_context * rctx, struct r600_pipe_sh
 		case TGSI_PROCESSOR_FRAGMENT:
 			if (shader->output[i].name == TGSI_SEMANTIC_COLOR) {
 				/* never export more colors than the number of CBs */
-				if (next_pixel_base && next_pixel_base >= (rctx->nr_cbufs + rctx->dual_src_blend * 1)) {
+				if (next_pixel_base && next_pixel_base >= key.nr_cbufs + key.dual_src_blend) {
 					/* skip export */
 					j--;
 					continue;
 				}
-				output[j].swizzle_w = rctx->alpha_to_one && rctx->multisample_enable && !rctx->cb0_is_integer ? 5 : 3;
+				output[j].swizzle_w = key.alpha_to_one ? 5 : 3;
 				output[j].array_base = next_pixel_base++;
 				output[j].type = V_SQ_CF_ALLOC_EXPORT_WORD0_SQ_EXPORT_PIXEL;
 				shader->nr_ps_color_exports++;
-				if (shader->fs_write_all && (rctx->chip_class >= EVERGREEN)) {
-					for (k = 1; k < rctx->nr_cbufs; k++) {
+				if (shader->fs_write_all && (rscreen->chip_class >= EVERGREEN)) {
+					for (k = 1; k < key.nr_cbufs; k++) {
 						j++;
 						memset(&output[j], 0, sizeof(struct r600_bytecode_output));
 						output[j].gpr = shader->output[i].gpr;
@@ -1601,7 +1607,7 @@ static int r600_shader_from_tgsi(struct r600_context * rctx, struct r600_pipe_sh
 						output[j].swizzle_x = 0;
 						output[j].swizzle_y = 1;
 						output[j].swizzle_z = 2;
-						output[j].swizzle_w = rctx->alpha_to_one && rctx->multisample_enable && !rctx->cb0_is_integer ? 5 : 3;
+						output[j].swizzle_w = key.alpha_to_one ? 5 : 3;
 						output[j].burst_count = 1;
 						output[j].barrier = 1;
 						output[j].array_base = next_pixel_base++;
diff --git a/src/gallium/drivers/r600/r600_state_common.c b/src/gallium/drivers/r600/r600_state_common.c
index 635804c7a49..1f4339c2608 100644
--- a/src/gallium/drivers/r600/r600_state_common.c
+++ b/src/gallium/drivers/r600/r600_state_common.c
@@ -728,19 +728,19 @@ static void *r600_create_vertex_elements(struct pipe_context *ctx, unsigned coun
 }
 
 /* Compute the key for the hw shader variant */
-static INLINE unsigned r600_shader_selector_key(struct pipe_context * ctx,
+static INLINE struct r600_shader_key r600_shader_selector_key(struct pipe_context * ctx,
 		struct r600_pipe_shader_selector * sel)
 {
 	struct r600_context *rctx = (struct r600_context *)ctx;
-	unsigned key;
+	struct r600_shader_key key;
+	memset(&key, 0, sizeof(key));
 
 	if (sel->type == PIPE_SHADER_FRAGMENT) {
-		key = rctx->two_side |
-		      ((rctx->alpha_to_one && rctx->multisample_enable && !rctx->cb0_is_integer) << 1) |
-		      (MIN2(sel->nr_ps_max_color_exports, rctx->nr_cbufs + rctx->dual_src_blend) << 2);
-	} else
-		key = 0;
-
+		key.color_two_side = rctx->two_side;
+		key.alpha_to_one = rctx->alpha_to_one && rctx->multisample_enable && !rctx->cb0_is_integer;
+		key.dual_src_blend = rctx->dual_src_blend;
+		key.nr_cbufs = rctx->nr_cbufs;
+	}
 	return key;
 }
 
@@ -750,7 +750,7 @@ static int r600_shader_select(struct pipe_context *ctx,
         struct r600_pipe_shader_selector* sel,
         unsigned *dirty)
 {
-	unsigned key;
+	struct r600_shader_key key;
 	struct r600_context *rctx = (struct r600_context *)ctx;
 	struct r600_pipe_shader * shader = NULL;
 	int r;
@@ -761,7 +761,7 @@ static int r600_shader_select(struct pipe_context *ctx,
 	 * This path is also used for most shaders that don't need multiple
 	 * variants, it will cost just a computation of the key and this
 	 * test. */
-	if (likely(sel->current && sel->current->key == key)) {
+	if (likely(sel->current && memcmp(&sel->current->key, &key, sizeof(key)) == 0)) {
 		return 0;
 	}
 
@@ -769,7 +769,7 @@ static int r600_shader_select(struct pipe_context *ctx,
 	if (sel->num_shaders > 1) {
 		struct r600_pipe_shader *p = sel->current, *c = p->next_variant;
 
-		while (c && c->key != key) {
+		while (c && memcmp(&c->key, &key, sizeof(key)) != 0) {
 			p = c;
 			c = c->next_variant;
 		}
@@ -784,10 +784,10 @@ static int r600_shader_select(struct pipe_context *ctx,
 		shader = CALLOC(1, sizeof(struct r600_pipe_shader));
 		shader->selector = sel;
 
-		r = r600_pipe_shader_create(ctx, shader);
+		r = r600_pipe_shader_create(ctx, shader, key);
 		if (unlikely(r)) {
-			R600_ERR("Failed to build shader variant (type=%u, key=%u) %d\n",
-					sel->type, key, r);
+			R600_ERR("Failed to build shader variant (type=%u) %d\n",
+				 sel->type, r);
 			sel->current = NULL;
 			return r;
 		}