svga: add comment about unsupported blend modes

2016-08-19 09:36:02 -06:00
parent b1772651b7
commit 93779b87a1
1 changed files with 3 additions and 0 deletions
--- a/src/gallium/drivers/svga/svga_pipe_blend.c
+++ b/src/gallium/drivers/svga/svga_pipe_blend.c
@@ -37,6 +37,9 @@
 static inline unsigned
 svga_translate_blend_factor(const struct svga_context *svga, unsigned factor)
 {
+   /* Note: there is no SVGA3D_BLENDOP_[INV]BLENDFACTORALPHA so
+    * we can't translate PIPE_BLENDFACTOR_[INV_]CONST_ALPHA properly.
+    */
   switch (factor) {
   case PIPE_BLENDFACTOR_ZERO:            return SVGA3D_BLENDOP_ZERO;
   case PIPE_BLENDFACTOR_SRC_ALPHA:       return SVGA3D_BLENDOP_SRCALPHA;