Makes framebuffer_blit_coverage_default_draw_buffer_binding.test in
gles3 conformance pass.
Signed-off-by: Anuj Phogat <anuj.pho...@gmail.com>
---
src/mesa/main/buffers.c | 11 ++++++++++-
1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/src/mesa/main/buffers.c b/src/mesa/main/buffers.c
index c2a02c0..dff3c0e 100644
--- a/src/mesa/main/buffers.c
+++ b/src/mesa/main/buffers.c
@@ -339,8 +339,17 @@ _mesa_DrawBuffers(GLsizei n, const GLenum *buffers)
* the error INVALID_OPERATION. This restriction is because these
* constants may themselves refer to multiple buffers, as shown in
* table 4.4."
+ *
+ * from OpenGL ES 3.0 specification, Page 180:
+ * "If the GL is bound to the default framebuffer, then n must be 1
+ * and the constant must be BACK or NONE. When draw buffer zero is
BACK,
+ * color values are written into the sole buffer for single-buffered
+ * contexts, or into the back buffer for double- buffered contexts.
+ * If DrawBuffers is supplied with a constant other than BACK and
+ * NONE, the error INVALID_OPERATION is generated."
*/
- if (_mesa_bitcount(destMask[output]) > 1) {
+ if (!(_mesa_is_gles3(ctx) && buffers[output] == GL_BACK) &&
+ _mesa_bitcount(destMask[output]) > 1) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glDrawBuffersARB(buffer)");
return;
}
--
1.7.7.6
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