mesa: Use a new, more specific hook for shader uniform changes.

Gallium drivers and i965 don't require special notification when
sampler uniforms change.  They simply see the _NEW_TEXTURE and adjust
their indirection tables.  These drivers don't want ProgramStringNotify:
it simply causes pointless recompiles.

Unfortunately, i915 still requires shader recompiles and needs
ProgramStringNotify.  Rather than trying to fix that, simply change the
hook to a new, more specific one: ShaderUniformChange.  On i915, this
translates to ProgramStringNotify; others simply ignore it.

Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index a91e8083f21..e6a1e68cb25 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -399,6 +399,13 @@ struct dd_function_table {
    GLboolean (*ProgramStringNotify)(struct gl_context *ctx, GLenum target, 
                                     struct gl_program *prog);
 
+   /**
+    * Notify driver that the sampler uniforms for the current program have
+    * changed.  On some drivers, this may require shader recompiles.
+    */
+   void (*SamplerUniformChange)(struct gl_context *ctx, GLenum target,
+                                struct gl_program *prog);
+
    /** Query if program can be loaded onto hardware */
    GLboolean (*IsProgramNative)(struct gl_context *ctx, GLenum target, 
 				struct gl_program *prog);