llvmpipe: check for texture usage in all scenes

2 files changed, 16 insertions, 10 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_setup.c b/src/gallium/drivers/llvmpipe/lp_setup.c
index bac2db92bae..8193b107d9d 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup.c
@@ -50,10 +50,6 @@
 #include "draw/draw_vbuf.h"
 
 
-/** XXX temporary value, temporary here */
-#define MAX_SCENES 2
-
-
 static void set_scene_state( struct setup_context *, unsigned );
 
 
@@ -474,15 +470,19 @@ lp_setup_set_sampler_textures( struct setup_context *setup,
 
 
 /**
- * Is the given texture referenced in the setup module's current scene?
+ * Is the given texture referenced by any scene?
+ * Note: we have to check all scenes including any scenes currently
+ * being rendered and the current scene being built.
  */
 boolean
 lp_setup_is_texture_referenced( const struct setup_context *setup,
                                 const struct pipe_texture *texture )
 {
-   const struct lp_scene *scene = setup->scene;
-   if (scene && lp_scene_is_textured_referenced(scene, texture)) {
-      return PIPE_REFERENCED_FOR_READ;
+   unsigned i;
+   for (i = 0; i < Elements(setup->scenes); i++) {
+      if (lp_scene_is_textured_referenced(setup->scenes[i], texture)) {
+         return PIPE_REFERENCED_FOR_READ;
+      }
    }
    return PIPE_UNREFERENCED;
 }
@@ -645,8 +645,8 @@ lp_setup_create( struct pipe_screen *screen,
 
    /* create some empty scenes */
    for (i = 0; i < MAX_SCENES; i++) {
-      struct lp_scene *scene = lp_scene_create();
-      lp_scene_enqueue(setup->empty_scenes, scene);
+      setup->scenes[i] = lp_scene_create();
+      lp_scene_enqueue(setup->empty_scenes, setup->scenes[i]);
    }
 
    setup->triangle = first_triangle;
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_context.h b/src/gallium/drivers/llvmpipe/lp_setup_context.h
index 66654ec5e71..e6f6f0e0bbb 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup_context.h
+++ b/src/gallium/drivers/llvmpipe/lp_setup_context.h
@@ -50,6 +50,11 @@
 struct lp_scene_queue;
 
 
+/** Max number of scenes */
+#define MAX_SCENES 2
+
+
+
 /**
  * Point/line/triangle setup context.
  * Note: "stored" below indicates data which is stored in the bins,
@@ -75,6 +80,7 @@ struct setup_context
     */
    struct draw_stage *vbuf;
    struct lp_rasterizer *rast;
+   struct lp_scene *scenes[MAX_SCENES];  /**< all the scenes */
    struct lp_scene *scene;               /**< current scene being built */
    struct lp_scene_queue *empty_scenes;  /**< queue of empty scenes */