1 files changed, 109 insertions, 36 deletions

diff --git a/src/gallium/auxiliary/postprocess/pp_init.c b/src/gallium/auxiliary/postprocess/pp_init.c
index 137c82b..1130248 100644
--- a/src/gallium/auxiliary/postprocess/pp_init.c
+++ b/src/gallium/auxiliary/postprocess/pp_init.c
@@ -42,57 +42,81 @@ struct pp_queue_t *
 pp_init(struct pipe_context *pipe, const unsigned int *enabled,
         struct cso_context *cso)
 {
-
+   unsigned int num_filters = 0;
    unsigned int curpos = 0, i, tmp_req = 0;
    struct pp_queue_t *ppq;
-   pp_func *tmp_q;
 
    pp_debug("Initializing the post-processing queue.\n");
 
    /* How many filters were requested? */
    for (i = 0; i < PP_FILTERS; i++) {
       if (enabled[i])
-         curpos++;
+         num_filters++;
    }
-   if (!curpos)
+   if (num_filters == 0)
       return NULL;
 
    ppq = CALLOC(1, sizeof(struct pp_queue_t));
-   tmp_q = CALLOC(curpos, sizeof(pp_func));
-   ppq->shaders = CALLOC(curpos, sizeof(void *));
-   ppq->verts = CALLOC(curpos, sizeof(unsigned int));
 
-   if (!tmp_q || !ppq || !ppq->shaders || !ppq->verts)
+   if (ppq == NULL) {
+      pp_debug("Unable to allocate memory for ppq.\n");
       goto error;
+   }
+
+   ppq->pp_queue = CALLOC(num_filters, sizeof(pp_func));
+   if (ppq->pp_queue == NULL) {
+      pp_debug("Unable to allocate memory for pp_queue.\n");
+      goto error;
+   }
+
+   ppq->shaders = CALLOC(num_filters, sizeof(void *));
+   ppq->filters = CALLOC(num_filters, sizeof(unsigned int));
+
+   if ((ppq->shaders == NULL) ||
+       (ppq->filters == NULL)) {
+      pp_debug("Unable to allocate memory for shaders and filter arrays.\n");
+      goto error;
+   }
 
    ppq->p = pp_init_prog(ppq, pipe, cso);
-   if (!ppq->p)
+   if (ppq->p == NULL) {
+      pp_debug("pp_init_prog returned NULL.\n");
       goto error;
+   }
 
    /* Add the enabled filters to the queue, in order */
    curpos = 0;
-   ppq->pp_queue = tmp_q;
    for (i = 0; i < PP_FILTERS; i++) {
       if (enabled[i]) {
          ppq->pp_queue[curpos] = pp_filters[i].main;
          tmp_req = MAX2(tmp_req, pp_filters[i].inner_tmps);
+         ppq->filters[curpos] = i;
 
          if (pp_filters[i].shaders) {
             ppq->shaders[curpos] =
                CALLOC(pp_filters[i].shaders + 1, sizeof(void *));
-            ppq->verts[curpos] = pp_filters[i].verts;
-            if (!ppq->shaders[curpos])
+            if (!ppq->shaders[curpos]) {
+               pp_debug("Unable to allocate memory for shader list.\n");
                goto error;
+            }
          }
-         pp_filters[i].init(ppq, curpos, enabled[i]);
+
+         /* Call the initialization function for the filter. */
+         if (!pp_filters[i].init(ppq, curpos, enabled[i])) {
+            pp_debug("Initialization for filter %u failed.\n", i);
+            goto error;
+         }           
 
          curpos++;
       }
    }
 
    ppq->p->blitctx = util_create_blit(ppq->p->pipe, cso);
-   if (!ppq->p->blitctx)
+
+   if (ppq->p->blitctx == NULL) {
+      pp_debug("Unable to create a blit context.\n");
       goto error;
+   }
 
    ppq->n_filters = curpos;
    ppq->n_tmp = (curpos > 2 ? 2 : 1);
@@ -104,16 +128,18 @@ pp_init(struct pipe_context *pipe, const unsigned int *enabled,
       ppq->shaders[i][0] = ppq->p->passvs;
 
    pp_debug("Queue successfully allocated. %u filter(s).\n", curpos);
-
+   
    return ppq;
 
  error:
-   pp_debug("Error setting up pp\n");
 
-   if (ppq)
-      FREE(ppq->p);
-   FREE(ppq);
-   FREE(tmp_q);
+   if (ppq) {
+      /* Assign curpos, since we only need to destroy initialized filters. */
+      ppq->n_filters = curpos;
+
+      /* Call the common free function which must handle partial initialization. */
+      pp_free(ppq);
+   }
 
    return NULL;
 }
@@ -142,33 +168,81 @@ pp_free_fbos(struct pp_queue_t *ppq)
    ppq->fbos_init = false;
 }
 
-/** Free the pp queue. Called on context termination. */
+/** 
+ * Free the pp queue. Called on context termination and failure in
+ * pp_init.
+ */
 void
 pp_free(struct pp_queue_t *ppq)
 {
-
    unsigned int i, j;
 
    pp_free_fbos(ppq);
 
-   util_destroy_blit(ppq->p->blitctx);
+   if (ppq && ppq->p) {
+      /* Only destroy created contexts. */
+      if (ppq->p->blitctx) {
+         util_destroy_blit(ppq->p->blitctx);
+      }
 
-   for (i = 0; i < ppq->n_filters; i++) {
-      for (j = 0; j < PP_MAX_PASSES && ppq->shaders[i][j]; j++) {
-         if (j >= ppq->verts[i]) {
-            ppq->p->pipe->delete_fs_state(ppq->p->pipe, ppq->shaders[i][j]);
-            ppq->shaders[i][j] = NULL;
-         }
-         else if (ppq->shaders[i][j] != ppq->p->passvs) {
-            ppq->p->pipe->delete_vs_state(ppq->p->pipe, ppq->shaders[i][j]);
-            ppq->shaders[i][j] = NULL;
+      if (ppq->p->pipe && ppq->filters && ppq->shaders) {
+         for (i = 0; i < ppq->n_filters; i++) {
+            unsigned int filter = ppq->filters[i];
+
+            if (ppq->shaders[i] == NULL) {
+               continue;
+            }
+
+            /*
+             * Common shader destruction code for all postprocessing
+             * filters.
+             */
+            for (j = 0; j < pp_filters[filter].shaders; j++) {
+               if (ppq->shaders[i][j] == NULL) {
+                  /* We reached the end of initialized shaders. */
+                  break;
+               }
+
+               if (ppq->shaders[i][j] == ppq->p->passvs) {
+                  continue;
+               }
+
+               assert(ppq);
+               assert(ppq->p);
+               assert(ppq->p->pipe);
+ 
+               if (j >= pp_filters[filter].verts) {
+                  assert(ppq->p->pipe->delete_fs_state);
+                  ppq->p->pipe->delete_fs_state(ppq->p->pipe,
+                                                ppq->shaders[i][j]);
+                  ppq->shaders[i][j] = NULL;
+               } else {
+                  assert(ppq->p->pipe->delete_vs_state);
+                  ppq->p->pipe->delete_vs_state(ppq->p->pipe,
+                                                ppq->shaders[i][j]);
+                  ppq->shaders[i][j] = NULL;
+               }
+            }
+
+            /* Finally call each filter type's free functionality. */
+            pp_filters[filter].free(ppq, i);
          }
       }
+
+      FREE(ppq->p);
    }
 
-   FREE(ppq->p);
-   FREE(ppq->pp_queue);
-   FREE(ppq);
+   if (ppq) {
+      /*
+       * Handle partial initialization for common resource destruction
+       * in the create path.
+       */
+      FREE(ppq->filters);
+      FREE(ppq->shaders);
+      FREE(ppq->pp_queue);
+  
+      FREE(ppq);
+   }
 
    pp_debug("Queue taken down.\n");
 }
@@ -256,7 +330,6 @@ pp_init_fbos(struct pp_queue_t *ppq, unsigned int w,
    if (!ppq->stencil || !ppq->stencils)
       goto error;
 
-
    p->framebuffer.width = w;
    p->framebuffer.height = h;