If an app called glTextureBarrierNV() without checking if the
extension was available, we'd crash with some gallium drivers
in st_TextureBarrier() because the pipe_context::texture_barrier()
pointer was NULL.
Generate GL_INVALID_OPERATION instead.
---
src/mesa/main/texturebarrier.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/mesa/main/texturebarrier.c b/src/mesa/main/texturebarrier.c
index 08ff561..4b2dda5 100644
--- a/src/mesa/main/texturebarrier.c
+++ b/src/mesa/main/texturebarrier.c
@@ -49,5 +49,11 @@ _mesa_TextureBarrierNV(void)
{
GET_CURRENT_CONTEXT(ctx);
+ if (!ctx->Extensions.NV_texture_barrier) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glTextureBarrierNV(not supported)");
+ return;
+ }
+
ctx->Driver.TextureBarrier(ctx);
}
--
1.9.1
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