Mesa (master): r600g: fixup VP->FP output->input routing.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: 59276b8541049a2d07d32fbb139fb14e21e387fc
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=59276b8541049a2d07d32fbb139fb14e21e387fc

Author: Dave Airlie <airlied at redhat.com>
Date:   Fri Sep 24 14:58:15 2010 +1000

r600g: fixup VP->FP output->input routing.

We need to map the TGSI semantics to each other using the hw semantic ids.

this fixes glsl-kwin-blur and glsl-routing.

---

 src/gallium/drivers/r600/eg_hw_states.c   |    2 +-
 src/gallium/drivers/r600/r600_context.h   |    1 +
 src/gallium/drivers/r600/r600_hw_states.c |    2 +-
 src/gallium/drivers/r600/r600_shader.c    |   16 ++++++++++++++++
 4 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/r600/eg_hw_states.c b/src/gallium/drivers/r600/eg_hw_states.c
index 77ac444..47c15b8 100644
--- a/src/gallium/drivers/r600/eg_hw_states.c
+++ b/src/gallium/drivers/r600/eg_hw_states.c
@@ -934,7 +934,7 @@ static int eg_ps_shader(struct r600_context *rctx, struct r600_context_state *rp
 
 	radeon_state_init(state, rscreen->rw, R600_STATE_SHADER, 0, R600_SHADER_PS);
 	for (i = 0; i < rshader->ninput; i++) {
-		tmp = S_028644_SEMANTIC(i);
+		tmp = S_028644_SEMANTIC(r600_find_vs_semantic_index(rctx, rshader, i));
 		tmp |= S_028644_SEL_CENTROID(1);
 		if (rshader->input[i].name == TGSI_SEMANTIC_POSITION)
 			have_pos = TRUE;
diff --git a/src/gallium/drivers/r600/r600_context.h b/src/gallium/drivers/r600/r600_context.h
index c15e643..aec0dab 100644
--- a/src/gallium/drivers/r600/r600_context.h
+++ b/src/gallium/drivers/r600/r600_context.h
@@ -279,6 +279,7 @@ extern int r600_pipe_shader_create(struct pipe_context *ctx,
 			const struct tgsi_token *tokens);
 extern int r600_pipe_shader_update(struct pipe_context *ctx,
 				struct r600_context_state *rstate);
+extern int r600_find_vs_semantic_index(struct r600_context *rctx, struct r600_shader *rshader, int id);
 
 #define R600_ERR(fmt, args...) \
 	fprintf(stderr, "EE %s/%s:%d - "fmt, __FILE__, __func__, __LINE__, ##args)
diff --git a/src/gallium/drivers/r600/r600_hw_states.c b/src/gallium/drivers/r600/r600_hw_states.c
index 1e9c5ff..9cbf120 100644
--- a/src/gallium/drivers/r600/r600_hw_states.c
+++ b/src/gallium/drivers/r600/r600_hw_states.c
@@ -1007,7 +1007,7 @@ static int r600_ps_shader(struct r600_context *rctx, struct r600_context_state *
 
 	radeon_state_init(state, rscreen->rw, R600_STATE_SHADER, 0, R600_SHADER_PS);
 	for (i = 0; i < rshader->ninput; i++) {
-		tmp = S_028644_SEMANTIC(i) | S_028644_SEL_CENTROID(1);
+		tmp = S_028644_SEMANTIC(r600_find_vs_semantic_index(rctx, rshader, i)) | S_028644_SEL_CENTROID(1);
 		if (rshader->input[i].name == TGSI_SEMANTIC_POSITION)
 			have_pos = TRUE;
 		if (rshader->input[i].name == TGSI_SEMANTIC_COLOR ||
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index e18c6ce..3274f3b 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -64,6 +64,22 @@ struct r600_shader_tgsi_instruction {
 static struct r600_shader_tgsi_instruction r600_shader_tgsi_instruction[], eg_shader_tgsi_instruction[];
 static int tgsi_helper_tempx_replicate(struct r600_shader_ctx *ctx);
 
+/* called from hw states files to find VS->FS mapping */ 
+int r600_find_vs_semantic_index(struct r600_context *rctx, struct r600_shader *rshader, int id)
+{
+	int i;
+	struct r600_shader *vs = &rctx->vs_shader->shader;
+	struct r600_shader_io *input = &rshader->input[id];
+
+	for (i = 0; i < vs->noutput; i++) {
+		if (input->name == vs->output[i].name &&
+		    input->sid == vs->output[i].sid) {
+			return i - 1;
+		}
+	}
+	return 0;
+}
+
 static int r600_shader_update(struct pipe_context *ctx, struct r600_shader *shader)
 {
 	struct r600_context *rctx = r600_context(ctx);