Mesa (master): i965/cs: Use override structure rather than separate env var

[Jordan Justen]

Module: Mesa
Branch: master
Commit: 10e03b4401b025f84b97f7e578a716a63c687196
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=10e03b4401b025f84b97f7e578a716a63c687196

Author: Jordan Justen <jordan.l.justen at intel.com>
Date:   Sun Jun  8 00:05:37 2014 -0700

i965/cs: Use override structure rather than separate env var

In 25268b93, we added a new environment variable
(INTEL_COMPUTE_SHADER) to allow some constant values to be upgraded
for the ARB_compute_shader extension.

Now, we can look to see if the extension was enabled via the
MESA_EXTENSION_OVERRIDE environment variable.

Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat at gmail.com>

---

 src/mesa/drivers/dri/i965/brw_context.c      |    3 ++-
 src/mesa/drivers/dri/i965/intel_extensions.c |    3 ---
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index 39dd582..cfb0be0 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -34,6 +34,7 @@
 #include "main/api_exec.h"
 #include "main/context.h"
 #include "main/fbobject.h"
+#include "main/extensions.h"
 #include "main/imports.h"
 #include "main/macros.h"
 #include "main/points.h"
@@ -302,7 +303,7 @@ brw_initialize_context_constants(struct brw_context *brw)
       ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits = max_samplers;
    else
       ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits = 0;
-   if (getenv("INTEL_COMPUTE_SHADER")) {
+   if (_mesa_extension_override_enables.ARB_compute_shader) {
       ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
       ctx->Const.MaxUniformBufferBindings += 12;
    } else {
diff --git a/src/mesa/drivers/dri/i965/intel_extensions.c b/src/mesa/drivers/dri/i965/intel_extensions.c
index 9babe64..d1df197 100644
--- a/src/mesa/drivers/dri/i965/intel_extensions.c
+++ b/src/mesa/drivers/dri/i965/intel_extensions.c
@@ -300,9 +300,6 @@ intelInitExtensions(struct gl_context *ctx)
        */
       if (ctx->API == API_OPENGL_CORE)
          ctx->Extensions.ARB_viewport_array = true;
-
-      if (getenv("INTEL_COMPUTE_SHADER"))
-         ctx->Extensions.ARB_compute_shader = true;
    }
 
    if (brw->gen >= 8) {