i965: Add a new state flag BRW_NEW_NR_SURFACES instead of CACHE_NEW_SURFACE

The CACHE_NEW_SURFACE bit always gets spammed since we get many different
surface BOs per state emit, but the only consumer of it wanted to just know
how many surfaces were enabled.

diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index 3199927..252c070 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -142,6 +142,7 @@ struct brw_context;
 #define BRW_NEW_BATCH                  0x10000
 /** brw->depth_region updated */
 #define BRW_NEW_DEPTH_BUFFER           0x20000
+#define BRW_NEW_NR_SURFACES            0x40000
 
 struct brw_state_flags {
    /** State update flags signalled by mesa internals */

diff --git a/src/mesa/drivers/dri/i965/brw_wm_state.c b/src/mesa/drivers/dri/i965/brw_wm_state.c
index a640da5..5302405 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_wm_state.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_state.c
@@ -88,7 +88,7 @@ wm_unit_populate_key(struct brw_context *brw, struct brw_wm_unit_key *key)
    /* BRW_NEW_CURBE_OFFSETS */
    key->curbe_offset = brw->curbe.wm_start;
 
-   /* CACHE_NEW_SURFACE */
+   /* BRW_NEW_NR_SURFACEs */
    key->nr_surfaces = brw->wm.nr_surfaces;
 
    /* CACHE_NEW_SAMPLER */
@@ -280,10 +280,10 @@ const struct brw_tracked_state brw_wm_unit = {
               _NEW_COLOR),
 
       .brw = (BRW_NEW_FRAGMENT_PROGRAM | 
-             BRW_NEW_CURBE_OFFSETS),
+             BRW_NEW_CURBE_OFFSETS |
+             BRW_NEW_NR_SURFACES),
 
-      .cache = (CACHE_NEW_SURFACE | 
-               CACHE_NEW_WM_PROG | 
+      .cache = (CACHE_NEW_WM_PROG |
                CACHE_NEW_SAMPLER)
    },
    .prepare = upload_wm_unit,

diff --git a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
index 3790b50..63e14cc 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
@@ -438,6 +438,7 @@ static void prepare_wm_surfaces(struct brw_context *brw )
    GLcontext *ctx = &brw->intel.ctx;
    struct intel_context *intel = &brw->intel;
    GLuint i;
+   int old_nr_surfaces;
 
    if (brw->state.nr_draw_regions  > 1) {
       for (i = 0; i < brw->state.nr_draw_regions; i++) {
@@ -448,6 +449,7 @@ static void prepare_wm_surfaces(struct brw_context *brw )
       brw_update_region_surface(brw, brw->state.draw_regions[0], 0, GL_TRUE);
    }
 
+   old_nr_surfaces = brw->wm.nr_surfaces;
    brw->wm.nr_surfaces = MAX_DRAW_BUFFERS;
 
    for (i = 0; i < BRW_MAX_TEX_UNIT; i++) {
@@ -473,6 +475,9 @@ static void prepare_wm_surfaces(struct brw_context *brw )
 
    dri_bo_unreference(brw->wm.bind_bo);
    brw->wm.bind_bo = brw_wm_get_binding_table(brw);
+
+   if (brw->wm.nr_surfaces != old_nr_surfaces)
+      brw->state.dirty.brw |= BRW_NEW_NR_SURFACES;
 }