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, 4 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_clip.c b/src/mesa/drivers/dri/i965/brw_clip.c
index ce34da165cb..540108e5f42 100644
--- a/src/mesa/drivers/dri/i965/brw_clip.c
+++ b/src/mesa/drivers/dri/i965/brw_clip.c
@@ -131,7 +131,7 @@ static void compile_clip_prog( struct brw_context *brw,
 
 /* Calculate interpolants for triangle and line rasterization.
  */
-static void upload_clip_prog( struct brw_context *brw )
+static int upload_clip_prog( struct brw_context *brw )
 {
    GLcontext *ctx = &brw->intel.ctx;
    struct brw_clip_prog_key key;
@@ -242,6 +242,8 @@ static void upload_clip_prog( struct brw_context *brw )
 					&brw->clip.prog_data);
    if (brw->clip.prog_bo == NULL)
       compile_clip_prog( brw, &key );
+
+   return dri_bufmgr_check_aperture_space(brw->clip.prog_bo);
 }
 
 
@@ -254,5 +256,5 @@ const struct brw_tracked_state brw_clip_prog = {
       .brw   = (BRW_NEW_REDUCED_PRIMITIVE),
       .cache = CACHE_NEW_VS_PROG
    },
-   .update = upload_clip_prog
+   .prepare = upload_clip_prog
 };