i965: initial attempt at fixing the aperture overflow

Makes state emission into a 2 phase, prepare sets things up and accounts
the size of all referenced buffer objects. The emit stage then actually
does the batchbuffer touching for emitting the objects.

There is an assert in dri_emit_reloc if a reloc occurs for a buffer
that hasn't been accounted yet.

1 files changed, 16 insertions, 4 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_sf_state.c b/src/mesa/drivers/dri/i965/brw_sf_state.c
index 398048429b..24388b79a5 100644
--- a/src/mesa/drivers/dri/i965/brw_sf_state.c
+++ b/src/mesa/drivers/dri/i965/brw_sf_state.c
@@ -37,7 +37,7 @@
 #include "macros.h"
 #include "intel_fbo.h"
 
-static void upload_sf_vp(struct brw_context *brw)
+static int upload_sf_vp(struct brw_context *brw)
 {
    GLcontext *ctx = &brw->intel.ctx;
    const GLfloat depth_scale = 1.0F / ctx->DrawBuffer->_DepthMaxF;
@@ -98,6 +98,8 @@ static void upload_sf_vp(struct brw_context *brw)
 
    dri_bo_unreference(brw->sf.vp_bo);
    brw->sf.vp_bo = brw_cache_data( &brw->cache, BRW_SF_VP, &sfv, NULL, 0 );
+
+   return dri_bufmgr_check_aperture_space(brw->sf.vp_bo);
 }
 
 const struct brw_tracked_state brw_sf_vp = {
@@ -107,7 +109,7 @@ const struct brw_tracked_state brw_sf_vp = {
       .brw   = BRW_NEW_METAOPS,
       .cache = 0
    },
-   .update = upload_sf_vp
+   .prepare = upload_sf_vp
 };
 
 struct brw_sf_unit_key {
@@ -267,10 +269,11 @@ sf_unit_create_from_key(struct brw_context *brw, struct brw_sf_unit_key *key,
    return bo;
 }
 
-static void upload_sf_unit( struct brw_context *brw )
+static int upload_sf_unit( struct brw_context *brw )
 {
    struct brw_sf_unit_key key;
    dri_bo *reloc_bufs[2];
+   int ret = 0;
 
    sf_unit_populate_key(brw, &key);
 
@@ -285,6 +288,15 @@ static void upload_sf_unit( struct brw_context *brw )
    if (brw->sf.state_bo == NULL) {
       brw->sf.state_bo = sf_unit_create_from_key(brw, &key, reloc_bufs);
    }
+
+   if (reloc_bufs[0])
+     ret |= dri_bufmgr_check_aperture_space(reloc_bufs[0]);
+
+   if (reloc_bufs[1])
+     ret |= dri_bufmgr_check_aperture_space(reloc_bufs[1]);
+
+   ret |= dri_bufmgr_check_aperture_space(brw->sf.state_bo);
+   return ret;
 }
 
 const struct brw_tracked_state brw_sf_unit = {
@@ -298,5 +310,5 @@ const struct brw_tracked_state brw_sf_unit = {
       .cache = (CACHE_NEW_SF_VP |
 		CACHE_NEW_SF_PROG)
    },
-   .update = upload_sf_unit,
+   .prepare = upload_sf_unit,
 };