llvmpipe: don't crash/assert on out of memory

Check for null pointers and return early, etc.

1 files changed, 5 insertions, 5 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_texture.c b/src/gallium/drivers/llvmpipe/lp_texture.c
index 0d526ead89..a156bb6517 100644
--- a/src/gallium/drivers/llvmpipe/lp_texture.c
+++ b/src/gallium/drivers/llvmpipe/lp_texture.c
@@ -389,7 +389,6 @@ llvmpipe_resource_map(struct pipe_resource *resource,
 
       map = llvmpipe_get_texture_image(lpr, face + zslice, level,
                                        tex_usage, layout);
-      assert(map);
       return map;
    }
    else {
@@ -1035,7 +1034,7 @@ llvmpipe_get_texture_image(struct llvmpipe_resource *lpr,
 
             layout_logic(cur_layout, layout, usage, &new_layout, &convert);
 
-            if (convert) {
+            if (convert && other_data && target_data) {
                if (layout == LP_TEX_LAYOUT_TILED) {
                   lp_linear_to_tiled(other_data, target_data,
                                      x * TILE_SIZE, y * TILE_SIZE,
@@ -1067,8 +1066,6 @@ llvmpipe_get_texture_image(struct llvmpipe_resource *lpr,
                                         width_t, height_t, layout);
    }
 
-   assert(target_data);
-
    return target_data;
 }
 
@@ -1187,13 +1184,16 @@ llvmpipe_get_texture_tile(struct llvmpipe_resource *lpr,
    cur_layout = llvmpipe_get_texture_tile_layout(lpr, face_slice, level, tx, ty);
 
    layout_logic(cur_layout, LP_TEX_LAYOUT_TILED, usage, &new_layout, &convert);
-   if (convert) {
+   if (convert && linear_image && tiled_image) {
       lp_linear_to_tiled(linear_image, tiled_image,
                          x, y, TILE_SIZE, TILE_SIZE, lpr->base.format,
                          lpr->row_stride[level],
                          lpr->tiles_per_row[level]);
    }
 
+   if (!tiled_image)
+      return NULL;
+
    if (new_layout != cur_layout)
       llvmpipe_set_texture_tile_layout(lpr, face_slice, level, tx, ty, new_layout);