i965: Initial Ivybridge VS state.

Copied from gen6_vs_state.c; reuses create_vs_constant_bo from there.

The 3DSTATE_VS command is identical but 3DSTATE_CONSTANT_VS is not.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

src/mesa/drivers/dri/i965/Makefile

@@ -102,6 +102,7 @@ DRIVER_SOURCES = \
 	gen7_sf_state.c \
 	gen7_urb.c \
 	gen7_viewport_state.c \
+	gen7_vs_state.c \
 	gen7_wm_state.c
 
 C_SOURCES = \

src/mesa/drivers/dri/i965/brw_state.h

@@ -122,6 +122,7 @@ extern const struct brw_tracked_state gen7_sf_clip_viewport;
 extern const struct brw_tracked_state gen7_sf_clip_viewport_state_pointer;
 extern const struct brw_tracked_state gen7_sf_state;
 extern const struct brw_tracked_state gen7_urb;
+extern const struct brw_tracked_state gen7_vs_state;
 extern const struct brw_tracked_state gen7_wm_constants;
 extern const struct brw_tracked_state gen7_wm_state;
 

src/mesa/drivers/dri/i965/brw_state_upload.c

@@ -210,7 +210,7 @@ const struct brw_tracked_state *gen7_atoms[] =
    &brw_wm_samplers,
    &gen6_sampler_state,
 
-   &gen6_vs_state,
+   &gen7_vs_state,
    &gen6_gs_state,
    &gen7_clip_state,
    &gen7_sbe_state,

src/mesa/drivers/dri/i965/gen7_vs_state.c

@@ -0,0 +1,93 @@
+/*
+ * Copyright © 2011 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 "brw_util.h"
+#include "program/prog_parameter.h"
+#include "program/prog_statevars.h"
+#include "intel_batchbuffer.h"
+
+static void
+upload_vs_state(struct brw_context *brw)
+{
+   struct intel_context *intel = &brw->intel;
+   struct gl_context *ctx = &intel->ctx;
+
+   if (brw->vs.push_const_size == 0) {
+      /* Disable the push constant buffers. */
+      BEGIN_BATCH(7);
+      OUT_BATCH(_3DSTATE_CONSTANT_VS << 16 | (7 - 2));
+      OUT_BATCH(0);
+      OUT_BATCH(0);
+      OUT_BATCH(0);
+      OUT_BATCH(0);
+      OUT_BATCH(0);
+      OUT_BATCH(0);
+      ADVANCE_BATCH();
+   } else {
+      BEGIN_BATCH(7);
+      OUT_BATCH(_3DSTATE_CONSTANT_VS << 16 | (7 - 2));
+      OUT_BATCH(brw->vs.push_const_size);
+      OUT_BATCH(0);
+      /* Pointer to the VS constant buffer.  Covered by the set of
+       * state flags from gen6_prepare_wm_contants
+       */
+      OUT_BATCH(brw->vs.push_const_offset);
+      OUT_BATCH(0);
+      OUT_BATCH(0);
+      OUT_BATCH(0);
+      ADVANCE_BATCH();
+   }
+
+   BEGIN_BATCH(6);
+   OUT_BATCH(_3DSTATE_VS << 16 | (6 - 2));
+   OUT_RELOC(brw->vs.prog_bo, I915_GEM_DOMAIN_INSTRUCTION, 0, 0);
+   OUT_BATCH((0 << GEN6_VS_SAMPLER_COUNT_SHIFT) |
+	     GEN6_VS_FLOATING_POINT_MODE_ALT |
+	     (brw->vs.nr_surfaces << GEN6_VS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
+   OUT_BATCH(0); /* scratch space base offset */
+   OUT_BATCH((1 << GEN6_VS_DISPATCH_START_GRF_SHIFT) |
+	     (brw->vs.prog_data->urb_read_length << GEN6_VS_URB_READ_LENGTH_SHIFT) |
+	     (0 << GEN6_VS_URB_ENTRY_READ_OFFSET_SHIFT));
+
+   OUT_BATCH(((brw->vs_max_threads - 1) << GEN6_VS_MAX_THREADS_SHIFT) |
+	     GEN6_VS_STATISTICS_ENABLE |
+	     GEN6_VS_ENABLE);
+   ADVANCE_BATCH();
+}
+
+const struct brw_tracked_state gen7_vs_state = {
+   .dirty = {
+      .mesa  = _NEW_TRANSFORM | _NEW_PROGRAM_CONSTANTS,
+      .brw   = (BRW_NEW_CURBE_OFFSETS |
+                BRW_NEW_NR_VS_SURFACES |
+		BRW_NEW_URB_FENCE |
+		BRW_NEW_CONTEXT |
+		BRW_NEW_VERTEX_PROGRAM |
+		BRW_NEW_BATCH),
+      .cache = CACHE_NEW_VS_PROG
+   },
+   .emit = upload_vs_state,
+};