Fixed bug 1579 - Creating a texture with unsupported format may cause double-destruction
Alexander Hirsch 2012-08-25 20:01:29 PDT
When creating a SDL_Texture with unsupported format (I'll now refer to it as
texture A), SDL_CreateTexture will call SDL_CreateTexture again with
GetClosestSupportedFormat to set texture->native (which I will now refer to as
texture B).
This causes texture B to be put before A in renderer->textures.
If texture A is explicitly destroyed, everything is fine. Otherwise, upon
SDL_DestroyRenderer, the loop will first encounter texture B, destroy it, then
texture A, destroy that which will want to destroy texture->native and since it
is already destroyed set an error.
The solution could be as simple as swapping texture A with B after
texture->native gets set in SDL_CreateTextures.
--- a/src/render/SDL_render.c Fri Sep 28 04:03:06 2012 -0700
+++ b/src/render/SDL_render.c Fri Sep 28 04:09:06 2012 -0700
@@ -393,6 +393,13 @@
return NULL;
}
+ /* Swap textures to have texture before texture->native in the list */
+ texture->native->next = texture->next;
+ texture->prev = texture->native->prev;
+ texture->native->prev = texture;
+ texture->next = texture->native;
+ renderer->textures = texture;
+
if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
texture->yuv = SDL_SW_CreateYUVTexture(format, w, h);
if (!texture->yuv) {