bug [#26329] Project Paint not working

we cant ensure that a requested buffer can be allocated so report opengl errors when failing to allocate the buffer (rather then printing to console).

this is common enough and generic error isn't too helpful to users.

1 files changed, 3 insertions, 1 deletions

diff --git a/source/blender/windowmanager/intern/wm_files.c b/source/blender/windowmanager/intern/wm_files.c
index 141c51adc58..48528574f7e 100644
--- a/source/blender/windowmanager/intern/wm_files.c
+++ b/source/blender/windowmanager/intern/wm_files.c
@@ -569,6 +569,7 @@ static ImBuf *blend_file_thumb(Scene *scene, int **thumb_pt)
 	/* will be scaled down, but gives some nice oversampling */
 	ImBuf *ibuf;
 	int *thumb;
+	char err_out[256]= "unknown";
 
 	*thumb_pt= NULL;
 	
@@ -576,7 +577,7 @@ static ImBuf *blend_file_thumb(Scene *scene, int **thumb_pt)
 		return NULL;
 
 	/* gets scaled to BLEN_THUMB_SIZE */
-	ibuf= ED_view3d_draw_offscreen_imbuf_simple(scene, BLEN_THUMB_SIZE * 2, BLEN_THUMB_SIZE * 2, IB_rect, OB_SOLID);
+	ibuf= ED_view3d_draw_offscreen_imbuf_simple(scene, BLEN_THUMB_SIZE * 2, BLEN_THUMB_SIZE * 2, IB_rect, OB_SOLID, err_out);
 	
 	if(ibuf) {		
 		float aspect= (scene->r.xsch*scene->r.xasp) / (scene->r.ysch*scene->r.yasp);
@@ -597,6 +598,7 @@ static ImBuf *blend_file_thumb(Scene *scene, int **thumb_pt)
 	}
 	else {
 		/* '*thumb_pt' needs to stay NULL to prevent a bad thumbnail from being handled */
+		fprintf(stderr, "blend_file_thumb failed to create thumbnail: %s\n", err_out);
 		thumb= NULL;
 	}