[Mesa-dev] [PATCH] main: Add STENCIL_INDEX formats to base_tex_format

[Jason Ekstrand]

This fixes a bug on BDW when our meta-based stencil blit path assert-fails
due to an invalid internal format even though we do support the
ARB_stencil_texturing extension.
---
 src/mesa/main/teximage.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 03264dd..0e37613 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -221,6 +221,16 @@ _mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat )
       }
    }
 
+   if (ctx->Extensions.ARB_stencil_texturing) {
+      switch (internalFormat) {
+         case GL_STENCIL_INDEX:
+         case GL_STENCIL_INDEX8:
+            return GL_STENCIL_INDEX;
+         default:
+            ; /* fallthrough */
+      }
+   }
+
    switch (internalFormat) {
    case GL_COMPRESSED_ALPHA:
       return GL_ALPHA;
-- 
2.2.2