i965: Remove upload_gs_state_for_tf.

This function only emits a particular case of 3DSTATE_GS. Instead, we can do
that inside genX(upload_gs_state), and later reuse part of that code for
emitting gen4-5 state.

There's the additional benefit of allowing us to remove gen6_gs_state.c, which
was only left because of this function.

Signed-off-by: Rafael Antognolli <rafael.antognolli@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/mesa/drivers/dri/i965/Makefile.sources

@@ -68,7 +68,6 @@ i965_FILES = \
 	gen6_clip_state.c \
 	gen6_constant_state.c \
 	gen6_depth_state.c \
-	gen6_gs_state.c \
 	gen6_multisample_state.c \
 	gen6_queryobj.c \
 	gen6_sampler_state.c \

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

@@ -355,8 +355,6 @@ void gen8_init_atoms(struct brw_context *brw);
 void gen9_init_atoms(struct brw_context *brw);
 void gen10_init_atoms(struct brw_context *brw);
 
-void upload_gs_state_for_tf(struct brw_context *brw);
-
 /* Memory Object Control State:
  * Specifying zero for L3 means "uncached in L3", at least on Haswell
  * and Baytrail, since there are no PTE flags for setting L3 cacheability.

src/mesa/drivers/dri/i965/gen6_gs_state.c

@@ -1,56 +0,0 @@
-/*
- * 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 "brw_context.h"
-#include "brw_state.h"
-#include "brw_defines.h"
-#include "intel_batchbuffer.h"
-#include "main/shaderapi.h"
-
-void
-upload_gs_state_for_tf(struct brw_context *brw)
-{
-   const struct gen_device_info *devinfo = &brw->screen->devinfo;
-
-   BEGIN_BATCH(7);
-   OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2));
-   OUT_BATCH(brw->ff_gs.prog_offset);
-   OUT_BATCH(GEN6_GS_SPF_MODE | GEN6_GS_VECTOR_MASK_ENABLE);
-   OUT_BATCH(0); /* no scratch space */
-   OUT_BATCH((2 << GEN6_GS_DISPATCH_START_GRF_SHIFT) |
-             (brw->ff_gs.prog_data->urb_read_length << GEN6_GS_URB_READ_LENGTH_SHIFT));
-   OUT_BATCH(((devinfo->max_gs_threads - 1) << GEN6_GS_MAX_THREADS_SHIFT) |
-             GEN6_GS_STATISTICS_ENABLE |
-             GEN6_GS_SO_STATISTICS_ENABLE |
-             GEN6_GS_RENDERING_ENABLE);
-   OUT_BATCH(GEN6_GS_SVBI_PAYLOAD_ENABLE |
-             GEN6_GS_SVBI_POSTINCREMENT_ENABLE |
-             (brw->ff_gs.prog_data->svbi_postincrement_value <<
-              GEN6_GS_SVBI_POSTINCREMENT_VALUE_SHIFT) |
-             GEN6_GS_ENABLE);
-   ADVANCE_BATCH();
-}

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

@@ -2475,7 +2475,22 @@ genX(upload_gs_state)(struct brw_context *brw)
       /* In gen6, transform feedback for the VS stage is done with an ad-hoc GS
        * program. This function provides the needed 3DSTATE_GS for this.
        */
-      upload_gs_state_for_tf(brw);
+      brw_batch_emit(brw, GENX(3DSTATE_GS), gs) {
+         gs.KernelStartPointer = KSP(brw, brw->ff_gs.prog_offset);
+         gs.SingleProgramFlow = true;
+         gs.VectorMaskEnable = true;
+         gs.DispatchGRFStartRegisterForURBData = 2;
+         gs.VertexURBEntryReadLength = brw->ff_gs.prog_data->urb_read_length;
+         gs.MaximumNumberofThreads = devinfo->max_gs_threads - 1;
+         gs.StatisticsEnable = true;
+         gs.SOStatisticsEnable = true;
+         gs.RenderingEnabled = true;
+         gs.SVBIPayloadEnable = true;
+         gs.SVBIPostIncrementEnable = true;
+         gs.SVBIPostIncrementValue =
+            brw->ff_gs.prog_data->svbi_postincrement_value;
+         gs.Enable = true;
+      }
 #endif
    } else {
       brw_batch_emit(brw, GENX(3DSTATE_GS), gs) {