Mesa (8.0): i965: Remove the INTEL_OLD_VS option.

[Ian Romanick]

Module: Mesa
Branch: 8.0
Commit: 1b33ae3a7da160033a2dc7abe6ef46dee3730c2e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=1b33ae3a7da160033a2dc7abe6ef46dee3730c2e

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Tue Jan 17 04:49:04 2012 -0800

i965: Remove the INTEL_OLD_VS option.

Now that we no longer generate Mesa IR from GLSL IR, it's impossible to
use the old vertex shader backend for GLSL programs.  There's simply no
Mesa IR to codegen from.

Any attempt to do so would result in immediate GPU hangs, presumably due
to the driver uploading an empty program with no EOT message.

NOTE: This is a candidate for the 8.0 branch.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Eric Anholt <eric at anholt.net>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov at intel.com>
(cherry picked from commit bdedd03b701781c8b71e162f7eb834e6a11105de)

---

 src/mesa/drivers/dri/i965/brw_context.c |   10 ++--------
 src/mesa/drivers/dri/i965/brw_context.h |    1 -
 src/mesa/drivers/dri/i965/brw_vs.c      |    2 +-
 3 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index 558e077..eb152f9 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -367,16 +367,10 @@ brwCreateContext(int api,
 
    brw_draw_init( brw );
 
-   brw->new_vs_backend = (getenv("INTEL_OLD_VS") == NULL);
    brw->precompile = driQueryOptionb(&intel->optionCache, "shader_precompile");
 
-   /* If we're using the new shader backend, we require integer uniforms
-    * stored as actual integers.
-    */
-   if (brw->new_vs_backend) {
-      ctx->Const.NativeIntegers = true;
-      ctx->Const.UniformBooleanTrue = 1;
-   }
+   ctx->Const.NativeIntegers = true;
+   ctx->Const.UniformBooleanTrue = 1;
 
    return true;
 }
diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index 9f9b113..c027bef 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -645,7 +645,6 @@ struct brw_context
    bool has_negative_rhw_bug;
    bool has_aa_line_parameters;
    bool has_pln;
-   bool new_vs_backend;
    bool precompile;
 
    struct {
diff --git a/src/mesa/drivers/dri/i965/brw_vs.c b/src/mesa/drivers/dri/i965/brw_vs.c
index 7fc7dcc..a2bce27 100644
--- a/src/mesa/drivers/dri/i965/brw_vs.c
+++ b/src/mesa/drivers/dri/i965/brw_vs.c
@@ -231,7 +231,7 @@ do_vs_prog(struct brw_context *brw,
 
    /* Emit GEN4 code.
     */
-   if (brw->new_vs_backend && prog) {
+   if (prog) {
       if (!brw_vs_emit(prog, &c)) {
 	 ralloc_free(mem_ctx);
 	 return false;