check if deleting currently bound frame/renderbuffer object

diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index 324a303253597cd5b0be5c953b1dd74f07b40bc6..f2ab7dc9c06102fb08b71495e07b5472f6a712b6 100644 (file)
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -582,6 +582,13 @@ _mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
         struct gl_renderbuffer *rb;
         rb = lookup_renderbuffer(ctx, renderbuffers[i]);
         if (rb) {
+            /* check if deleting currently bound renderbuffer object */
+            if (rb == ctx->CurrentRenderbuffer) {
+               /* bind default */
+               ASSERT(rb->RefCount >= 2);
+               _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
+            }
+
            /* remove from hash table immediately, to free the ID */
            _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
 
@@ -896,7 +903,7 @@ _mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
    }
 
    oldFb = ctx->DrawBuffer;
-   if (oldFb) { /* AND oldFb->Name != 0 */
+   if (oldFb && oldFb->Name != 0) {
       oldFb->RefCount--;
       if (oldFb->RefCount == 0) {
          oldFb->Delete(oldFb);
@@ -925,6 +932,14 @@ _mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
         fb = lookup_framebuffer(ctx, framebuffers[i]);
         if (fb) {
             ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
+
+            /* check if deleting currently bound framebuffer object */
+            if (fb == ctx->DrawBuffer) {
+               /* bind default */
+               ASSERT(fb->RefCount >= 2);
+               _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+            }
+
            /* remove from hash table immediately, to free the ID */
            _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);