Mesa (master): mesa: allow BlendBarrier to be used without support for full fb fetch

[Ilia Mirkin]

Module: Mesa
Branch: master
Commit: 376316e963b6636bb3c3900b3918a197c5e632aa
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=376316e963b6636bb3c3900b3918a197c5e632aa

Author: Ilia Mirkin <imirkin at alum.mit.edu>
Date:   Sun Jan  1 23:44:25 2017 -0500

mesa: allow BlendBarrier to be used without support for full fb fetch

The extension spec is not currently published, so it's a bit premature
to require it for BlendBarrier usage.

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle at amd.com>

---

 src/mesa/main/barrier.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mesa/main/barrier.c b/src/mesa/main/barrier.c
index 2f5b451..e55d13c 100644
--- a/src/mesa/main/barrier.c
+++ b/src/mesa/main/barrier.c
@@ -114,7 +114,8 @@ _mesa_BlendBarrier(void)
 {
    GET_CURRENT_CONTEXT(ctx);
 
-   if (!ctx->Extensions.MESA_shader_framebuffer_fetch_non_coherent) {
+   if (!ctx->Extensions.MESA_shader_framebuffer_fetch_non_coherent &&
+       !ctx->Extensions.KHR_blend_equation_advanced) {
       _mesa_error(ctx, GL_INVALID_OPERATION,
                   "glBlendBarrier(not supported)");
       return;