Mesa (master): i965: Support the force_glsl_version driconf option.

[Kenneth Graunke]

Module: Mesa
Branch: master
Commit: 2f7a7ae13196c58eddea75fc51637f8c2a8579b0
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2f7a7ae13196c58eddea75fc51637f8c2a8579b0

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Fri Jan 20 20:33:57 2017 -0800

i965: Support the force_glsl_version driconf option.

Gallium drivers have had this for a while.  It makes sense to support
it consistently across drivers, so expose it in i965 as well.

Cc: "17.0" <mesa-stable at lists.freedesktop.org>
Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>

---

 src/mesa/drivers/dri/i965/brw_context.c  | 3 +++
 src/mesa/drivers/dri/i965/intel_screen.c | 1 +
 2 files changed, 4 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index 0b3ac89..071de11 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -908,6 +908,9 @@ brw_process_driconf_options(struct brw_context *brw)
    ctx->Const.ForceGLSLExtensionsWarn =
       driQueryOptionb(options, "force_glsl_extensions_warn");
 
+   ctx->Const.ForceGLSLVersion =
+      driQueryOptioni(options, "force_glsl_version");
+
    ctx->Const.DisableGLSLLineContinuations =
       driQueryOptionb(options, "disable_glsl_line_continuations");
 
diff --git a/src/mesa/drivers/dri/i965/intel_screen.c b/src/mesa/drivers/dri/i965/intel_screen.c
index 469d16c..83b1f3f 100644
--- a/src/mesa/drivers/dri/i965/intel_screen.c
+++ b/src/mesa/drivers/dri/i965/intel_screen.c
@@ -79,6 +79,7 @@ DRI_CONF_BEGIN
       DRI_CONF_ALWAYS_FLUSH_CACHE("false")
       DRI_CONF_DISABLE_THROTTLING("false")
       DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
+      DRI_CONF_FORCE_GLSL_VERSION(0)
       DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
       DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
       DRI_CONF_DUAL_COLOR_BLEND_BY_LOCATION("false")