draw: Silence compiler warnings on Windows.

[mesa.git] / src / gallium / auxiliary / draw / draw_vs_exec.c

diff --git a/src/gallium/auxiliary/draw/draw_vs_exec.c b/src/gallium/auxiliary/draw/draw_vs_exec.c
index 4501877efcf4b94afd977f6aa2e528c3797c27e3..79a19d6be2bb543e9c980f8e1cf850d438b13c77 100644 (file)
--- a/src/gallium/auxiliary/draw/draw_vs_exec.c
+++ b/src/gallium/auxiliary/draw/draw_vs_exec.c
@@ -31,20 +31,22 @@
   *   Brian Paul
   */
 
-#include "pipe/p_util.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
 #include "pipe/p_shader_tokens.h"
 
 #include "draw_private.h"
 #include "draw_context.h"
 #include "draw_vs.h"
 
-#include "tgsi/util/tgsi_parse.h"
-#include "tgsi/util/tgsi_scan.h"
+#include "tgsi/tgsi_parse.h"
+#include "tgsi/tgsi_scan.h"
 
 
 struct exec_vertex_shader {
    struct draw_vertex_shader base;
    struct tgsi_exec_machine *machine;
+   const struct tgsi_token *machine_tokens;
 };
 
 static struct exec_vertex_shader *exec_vertex_shader( struct draw_vertex_shader *vs )
@@ -61,12 +63,16 @@ vs_exec_prepare( struct draw_vertex_shader *shader,
 {
    struct exec_vertex_shader *evs = exec_vertex_shader(shader);
 
-   /* specify the vertex program to interpret/execute */
-   tgsi_exec_machine_bind_shader(evs->machine,
-                                shader->state.tokens,
-                                PIPE_MAX_SAMPLERS,
-                                NULL /*samplers*/ );
-
+   /* Specify the vertex program to interpret/execute.
+    * Avoid rebinding when possible.
+    */
+   if (evs->machine_tokens != shader->state.tokens) {
+      tgsi_exec_machine_bind_shader(evs->machine,
+                                    shader->state.tokens,
+                                    PIPE_MAX_SAMPLERS,
+                                    NULL /*samplers*/ );
+      evs->machine_tokens = shader->state.tokens;
+   }
 }