i965: Set up the SNB URB.

even with vs disabled, still doesn't work.

1 files changed, 81 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/gen6_urb.c b/src/mesa/drivers/dri/i965/gen6_urb.c
new file mode 100644
index 0000000000..dea0aa7100
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/gen6_urb.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright © 2009 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+#include "main/macros.h"
+#include "intel_batchbuffer.h"
+#include "brw_context.h"
+#include "brw_state.h"
+#include "brw_defines.h"
+
+static void
+prepare_urb( struct brw_context *brw )
+{
+   brw->urb.nr_vs_entries = 24;
+   if (brw->gs.prog_bo)
+      brw->urb.nr_gs_entries = 4;
+   else
+      brw->urb.nr_gs_entries = 0;
+   /* CACHE_NEW_VS_PROG */
+   brw->urb.vs_size = MIN2(brw->vs.prog_data->urb_entry_size, 1);
+
+   /* Check that the number of URB rows (8 floats each) allocated is less
+    * than the URB space.
+    */
+   assert((brw->urb.nr_vs_entries +
+	   brw->urb.nr_gs_entries) * brw->urb.vs_size * 8 < 64 * 1024);
+}
+
+static void
+upload_urb(struct brw_context *brw)
+{
+   struct intel_context *intel = &brw->intel;
+
+   assert(brw->urb.nr_vs_entries % 4 == 0);
+   assert(brw->urb.nr_gs_entries % 4 == 0);
+   /* GS requirement */
+   assert(!brw->gs.prog_bo || brw->urb.vs_size < 5);
+
+   intel_batchbuffer_emit_mi_flush(intel->batch);
+
+   BEGIN_BATCH(3);
+   OUT_BATCH(CMD_URB << 16 | (3 - 2));
+   OUT_BATCH(((brw->urb.vs_size - 1) << GEN6_URB_VS_SIZE_SHIFT) |
+	     ((brw->urb.nr_vs_entries) << GEN6_URB_VS_SIZE_SHIFT));
+   OUT_BATCH(((brw->urb.vs_size - 1) << GEN6_URB_GS_SIZE_SHIFT) |
+	     ((brw->urb.nr_gs_entries) << GEN6_URB_GS_SIZE_SHIFT));
+   ADVANCE_BATCH();
+}
+
+const struct brw_tracked_state gen6_urb = {
+   .dirty = {
+      .mesa = 0,
+      .brw = BRW_NEW_CONTEXT,
+      .cache = CACHE_NEW_VS_PROG,
+   },
+   .prepare = prepare_urb,
+   .emit = upload_urb,
+};