Mesa (master): i965: Enable ARB_derivative_control on Gen7+.

[Chris Forbes]

Module: Mesa
Branch: master
Commit: 654b7788ebe7db63a3c5442d4eb1144b9284e9af
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=654b7788ebe7db63a3c5442d4eb1144b9284e9af

Author: Chris Forbes <chrisf at ijw.co.nz>
Date:   Thu Aug 14 21:11:28 2014 +1200

i965: Enable ARB_derivative_control on Gen7+.

The extension says GL 4.0 is required. We'll meet the spirit
of that restriction by enabling on just those generations which will
soon support GL 4.0 (Gen7+), although it's technically supportable on
all generations.

Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
Reviewed-by: Matt Turner <mattst88 at gmail.com>

---

 src/mesa/drivers/dri/i965/intel_extensions.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/src/mesa/drivers/dri/i965/intel_extensions.c b/src/mesa/drivers/dri/i965/intel_extensions.c
index e134cd9..c672044 100644
--- a/src/mesa/drivers/dri/i965/intel_extensions.c
+++ b/src/mesa/drivers/dri/i965/intel_extensions.c
@@ -305,6 +305,7 @@ intelInitExtensions(struct gl_context *ctx)
       }
 
       ctx->Extensions.ARB_texture_compression_bptc = true;
+      ctx->Extensions.ARB_derivative_control = true;
    }
 
    if (brw->gen >= 8) {