Trying to read depth values from a non-existant depth buffer should
generate GL_INVALID_OPERATION.
---
src/mesa/main/readpix.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/src/mesa/main/readpix.c b/src/mesa/main/readpix.c
index 3882e09..9193def 100644
--- a/src/mesa/main/readpix.c
+++ b/src/mesa/main/readpix.c
@@ -660,7 +660,8 @@ _mesa_error_check_format_type(struct gl_context *ctx,
GLenum format,
}
break;
case GL_DEPTH_COMPONENT:
- if ((drawing && !_mesa_dest_buffer_exists(ctx, format))) {
+ if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||
+ (reading && !_mesa_source_buffer_exists(ctx, format))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"gl%sPixels(no depth buffer)", readDraw);
return GL_TRUE;
--
1.7.3.4
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