i965/cs: Add BRW_NEW_COMPUTE_PROGRAM state flag.

Also add code to brw_upload_state to set it when the compute program
changes.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/mesa/drivers/dri/i965/brw_context.h

@@ -209,6 +209,7 @@ enum brw_state_id {
    BRW_STATE_CLIP_VP,
    BRW_STATE_SAMPLER_STATE_TABLE,
    BRW_STATE_VS_ATTRIB_WORKAROUNDS,
+   BRW_STATE_COMPUTE_PROGRAM,
    BRW_NUM_STATE_BITS
 };
 
@@ -288,6 +289,7 @@ enum brw_state_id {
 #define BRW_NEW_CLIP_VP                 (1ull << BRW_STATE_CLIP_VP)
 #define BRW_NEW_SAMPLER_STATE_TABLE     (1ull << BRW_STATE_SAMPLER_STATE_TABLE)
 #define BRW_NEW_VS_ATTRIB_WORKAROUNDS   (1ull << BRW_STATE_VS_ATTRIB_WORKAROUNDS)
+#define BRW_NEW_COMPUTE_PROGRAM         (1ull << BRW_STATE_COMPUTE_PROGRAM)
 
 struct brw_state_flags {
    /** State update flags signalled by mesa internals */
@@ -1205,6 +1207,7 @@ struct brw_context
    const struct gl_vertex_program *vertex_program;
    const struct gl_geometry_program *geometry_program;
    const struct gl_fragment_program *fragment_program;
+   const struct gl_compute_program *compute_program;
 
    /**
     * Number of samples in ctx->DrawBuffer, updated by BRW_NEW_NUM_SAMPLES so

src/mesa/drivers/dri/i965/brw_state_upload.c

@@ -580,6 +580,7 @@ static struct dirty_bit_map brw_bits[] = {
    DEFINE_BIT(BRW_NEW_CLIP_VP),
    DEFINE_BIT(BRW_NEW_SAMPLER_STATE_TABLE),
    DEFINE_BIT(BRW_NEW_VS_ATTRIB_WORKAROUNDS),
+   DEFINE_BIT(BRW_NEW_COMPUTE_PROGRAM),
    {0, 0, 0}
 };
 
@@ -670,6 +671,11 @@ brw_upload_pipeline_state(struct brw_context *brw,
       }
    }
 
+   if (brw->compute_program != ctx->ComputeProgram._Current) {
+      brw->compute_program = ctx->ComputeProgram._Current;
+      brw->ctx.NewDriverState |= BRW_NEW_COMPUTE_PROGRAM;
+   }
+
    if (brw->meta_in_progress != _mesa_meta_in_progress(ctx)) {
       brw->meta_in_progress = _mesa_meta_in_progress(ctx);
       brw->ctx.NewDriverState |= BRW_NEW_META_IN_PROGRESS;