1 /*
2 * Copyright © 2013 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 #include "brw_context.h"
25 #include "brw_state.h"
26 #include "brw_defines.h"
27 #include "intel_batchbuffer.h"
28
29 static void
gen8_upload_gs_state(struct brw_context * brw)30 gen8_upload_gs_state(struct brw_context *brw)
31 {
32 const struct gen_device_info *devinfo = &brw->screen->devinfo;
33 const struct brw_stage_state *stage_state = &brw->gs.base;
34 /* BRW_NEW_GEOMETRY_PROGRAM */
35 bool active = brw->geometry_program;
36 /* BRW_NEW_GS_PROG_DATA */
37 const struct brw_stage_prog_data *prog_data = stage_state->prog_data;
38 const struct brw_vue_prog_data *vue_prog_data =
39 brw_vue_prog_data(stage_state->prog_data);
40 const struct brw_gs_prog_data *gs_prog_data =
41 brw_gs_prog_data(stage_state->prog_data);
42
43 if (active) {
44 int urb_entry_write_offset = 1;
45 uint32_t urb_entry_output_length =
46 ((vue_prog_data->vue_map.num_slots + 1) / 2 - urb_entry_write_offset);
47
48 if (urb_entry_output_length == 0)
49 urb_entry_output_length = 1;
50
51 BEGIN_BATCH(10);
52 OUT_BATCH(_3DSTATE_GS << 16 | (10 - 2));
53 OUT_BATCH(stage_state->prog_offset);
54 OUT_BATCH(0);
55 OUT_BATCH(gs_prog_data->vertices_in |
56 ((ALIGN(stage_state->sampler_count, 4)/4) <<
57 GEN6_GS_SAMPLER_COUNT_SHIFT) |
58 ((prog_data->binding_table.size_bytes / 4) <<
59 GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
60
61 if (prog_data->total_scratch) {
62 OUT_RELOC64(stage_state->scratch_bo,
63 I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
64 ffs(stage_state->per_thread_scratch) - 11);
65 } else {
66 OUT_BATCH(0);
67 OUT_BATCH(0);
68 }
69
70 /* DW6 */
71 OUT_BATCH(((gs_prog_data->output_vertex_size_hwords * 2 - 1) <<
72 GEN7_GS_OUTPUT_VERTEX_SIZE_SHIFT) |
73 (gs_prog_data->output_topology <<
74 GEN7_GS_OUTPUT_TOPOLOGY_SHIFT) |
75 (vue_prog_data->include_vue_handles ?
76 GEN7_GS_INCLUDE_VERTEX_HANDLES : 0) |
77 (vue_prog_data->urb_read_length <<
78 GEN6_GS_URB_READ_LENGTH_SHIFT) |
79 (0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT) |
80 (prog_data->dispatch_grf_start_reg <<
81 GEN6_GS_DISPATCH_START_GRF_SHIFT));
82
83 uint32_t dw7 = (gs_prog_data->control_data_header_size_hwords <<
84 GEN7_GS_CONTROL_DATA_HEADER_SIZE_SHIFT) |
85 SET_FIELD(vue_prog_data->dispatch_mode,
86 GEN7_GS_DISPATCH_MODE) |
87 ((gs_prog_data->invocations - 1) <<
88 GEN7_GS_INSTANCE_CONTROL_SHIFT) |
89 GEN6_GS_STATISTICS_ENABLE |
90 (gs_prog_data->include_primitive_id ?
91 GEN7_GS_INCLUDE_PRIMITIVE_ID : 0) |
92 GEN7_GS_REORDER_TRAILING |
93 GEN7_GS_ENABLE;
94 uint32_t dw8 = gs_prog_data->control_data_format <<
95 HSW_GS_CONTROL_DATA_FORMAT_SHIFT;
96
97 if (gs_prog_data->static_vertex_count != -1) {
98 dw8 |= GEN8_GS_STATIC_OUTPUT |
99 SET_FIELD(gs_prog_data->static_vertex_count,
100 GEN8_GS_STATIC_VERTEX_COUNT);
101 }
102
103 if (brw->gen < 9)
104 dw7 |= (devinfo->max_gs_threads / 2 - 1) << HSW_GS_MAX_THREADS_SHIFT;
105 else
106 dw8 |= devinfo->max_gs_threads - 1;
107
108 /* DW7 */
109 OUT_BATCH(dw7);
110
111 /* DW8 */
112 OUT_BATCH(dw8);
113
114 /* DW9 */
115 OUT_BATCH(vue_prog_data->cull_distance_mask |
116 (urb_entry_output_length << GEN8_GS_URB_OUTPUT_LENGTH_SHIFT) |
117 (urb_entry_write_offset <<
118 GEN8_GS_URB_ENTRY_OUTPUT_OFFSET_SHIFT));
119 ADVANCE_BATCH();
120 } else {
121 BEGIN_BATCH(10);
122 OUT_BATCH(_3DSTATE_GS << 16 | (10 - 2));
123 OUT_BATCH(0); /* prog_bo */
124 OUT_BATCH(0);
125 OUT_BATCH(0);
126 OUT_BATCH(0); /* scratch space base offset */
127 OUT_BATCH(0);
128 OUT_BATCH(0);
129 OUT_BATCH(GEN6_GS_STATISTICS_ENABLE);
130 OUT_BATCH(0);
131 OUT_BATCH(0);
132 ADVANCE_BATCH();
133 }
134 }
135
136 const struct brw_tracked_state gen8_gs_state = {
137 .dirty = {
138 .mesa = 0,
139 .brw = BRW_NEW_BATCH |
140 BRW_NEW_BLORP |
141 BRW_NEW_CONTEXT |
142 BRW_NEW_GEOMETRY_PROGRAM |
143 BRW_NEW_GS_PROG_DATA,
144 },
145 .emit = gen8_upload_gs_state,
146 };
147