i965: Create new files for HS/DS/TE state upload code.

For now, this just splits the existing code to disable these stages into
separate atoms/files.  We can then replace it with real code.

v2: Bump the render atoms in this patch so it compiles (in my branch,
    I'd bumped it in an earlier patch).  61 seems to be the minimum
    that works, which doesn't match the old value + the number of atoms
    I added in this patch, so apparently we had some slop before.

v3: Actually disable the DS unit on Gen8+.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net> [v1]
Reviewed-by: Matt Turner <mattst88@gmail.com>

1 files changed, 66 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/gen8_ds_state.c b/src/mesa/drivers/dri/i965/gen8_ds_state.c
new file mode 100644
index 0000000..2c0a04d
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/gen8_ds_state.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright © 2014 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.
+ */
+
+#include "brw_context.h"
+#include "brw_state.h"
+#include "brw_defines.h"
+#include "intel_batchbuffer.h"
+
+static void
+gen8_upload_ds_state(struct brw_context *brw)
+{
+   /* Disable the DS Unit */
+   BEGIN_BATCH(11);
+   OUT_BATCH(_3DSTATE_CONSTANT_DS << 16 | (11 - 2));
+   OUT_BATCH(0);
+   OUT_BATCH(0);
+   OUT_BATCH(0);
+   OUT_BATCH(0);
+   OUT_BATCH(0);
+   OUT_BATCH(0);
+   OUT_BATCH(0);
+   OUT_BATCH(0);
+   OUT_BATCH(0);
+   OUT_BATCH(0);
+   ADVANCE_BATCH();
+
+   int ds_pkt_len = brw->gen >= 9 ? 11 : 9;
+   BEGIN_BATCH(ds_pkt_len);
+   OUT_BATCH(_3DSTATE_DS << 16 | (ds_pkt_len - 2));
+   for (int i = 0; i < ds_pkt_len - 1; i++)
+      OUT_BATCH(0);
+   ADVANCE_BATCH();
+
+   BEGIN_BATCH(2);
+   OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS_DS << 16 | (2 - 2));
+   OUT_BATCH(brw->hw_bt_pool.next_offset);
+   ADVANCE_BATCH();
+}
+
+const struct brw_tracked_state gen8_ds_state = {
+   .dirty = {
+      .mesa  = 0,
+      .brw   = BRW_NEW_CONTEXT,
+   },
+   .emit = gen8_upload_ds_state,
+};