[Mesa-dev] [PATCH 3/4] mesa: Try to fix CopyTex[Sub]Image of stencil textures.

[Kenneth Graunke]

ES prohibits this, but GL appears to allow it.  We at least need this
much, or else we'll crash as there's no source to read from.

This fixed crashes in the ES tests before I realized I needed to
prohibit stencil instead.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
---
 src/mesa/main/teximage.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 76b6584..6b0744b 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -3434,8 +3434,9 @@ get_copy_tex_image_source(struct gl_context *ctx, mesa_format texFormat)
    if (_mesa_get_format_bits(texFormat, GL_DEPTH_BITS) > 0) {
       /* reading from depth/stencil buffer */
       return ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
-   }
-   else {
+   } else if (_mesa_get_format_bits(texFormat, GL_STENCIL_BITS) > 0) {
+      return ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
+   } else {
       /* copying from color buffer */
       return ctx->ReadBuffer->_ColorReadBuffer;
    }
-- 
2.8.0