v3d: save a pointer to the TILE_BINNING_MODE_CFG packet in the CL

We want to make the decision about double-buffer enablement much later
when we have enough information to make it. That means we might need
to rewrite this packet, so we need to save a pointer to its location
in the CL.

Reviewed-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32111>

src/gallium/drivers/v3d/v3d_context.h

@@ -536,6 +536,13 @@ struct v3d_job {
          */
         uint32_t tf_draw_calls_queued;
 
+
+        /* A pointer to the location of the TILE_BINNING_MODE_CFG packet so we
+         * can rewrite it to enable double-buffer mode by the time we have
+         * enough info about the job to make that decision.
+         */
+        struct v3d_cl_out *bcl_tile_binning_mode_ptr;
+
         struct v3d_job_key key;
 };
 

src/gallium/drivers/v3d/v3dx_draw.c

@@ -96,6 +96,8 @@ v3dX(start_binning)(struct v3d_context *v3d, struct v3d_job *job)
         }
 
         assert(!job->msaa || !job->double_buffer);
+        job->bcl_tile_binning_mode_ptr = cl_start(&job->bcl);
+
 #if V3D_VERSION >= 71
         cl_emit(&job->bcl, TILE_BINNING_MODE_CFG, config) {
                 config.width_in_pixels = job->draw_width;