1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
|
/*
Copyright (C) Intel Corp. 2006. All Rights Reserved.
Intel funded Tungsten Graphics to
develop this 3D driver.
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 COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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:
* Keith Whitwell <keithw@vmware.com>
*/
#include "main/compiler.h"
#include "main/context.h"
#include "brw_context.h"
#include "brw_vs.h"
#include "brw_util.h"
#include "brw_state.h"
#include "program/prog_print.h"
#include "program/prog_parameter.h"
#include "brw_nir.h"
#include "brw_program.h"
#include "util/ralloc.h"
GLbitfield64
brw_vs_outputs_written(struct brw_context *brw, struct brw_vs_prog_key *key,
GLbitfield64 user_varyings)
{
GLbitfield64 outputs_written = user_varyings;
if (key->copy_edgeflag) {
outputs_written |= BITFIELD64_BIT(VARYING_SLOT_EDGE);
}
if (brw->gen < 6) {
/* Put dummy slots into the VUE for the SF to put the replaced
* point sprite coords in. We shouldn't need these dummy slots,
* which take up precious URB space, but it would mean that the SF
* doesn't get nice aligned pairs of input coords into output
* coords, which would be a pain to handle.
*/
for (unsigned i = 0; i < 8; i++) {
if (key->point_coord_replace & (1 << i))
outputs_written |= BITFIELD64_BIT(VARYING_SLOT_TEX0 + i);
}
/* if back colors are written, allocate slots for front colors too */
if (outputs_written & BITFIELD64_BIT(VARYING_SLOT_BFC0))
outputs_written |= BITFIELD64_BIT(VARYING_SLOT_COL0);
if (outputs_written & BITFIELD64_BIT(VARYING_SLOT_BFC1))
outputs_written |= BITFIELD64_BIT(VARYING_SLOT_COL1);
}
/* In order for legacy clipping to work, we need to populate the clip
* distance varying slots whenever clipping is enabled, even if the vertex
* shader doesn't write to gl_ClipDistance.
*/
if (key->nr_userclip_plane_consts > 0) {
outputs_written |= BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0);
outputs_written |= BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1);
}
return outputs_written;
}
static void
brw_vs_debug_recompile(struct brw_context *brw, struct gl_program *prog,
const struct brw_vs_prog_key *key)
{
perf_debug("Recompiling vertex shader for program %d\n", prog->Id);
bool found = false;
const struct brw_vs_prog_key *old_key =
brw_find_previous_compile(&brw->cache, BRW_CACHE_VS_PROG,
key->program_string_id);
if (!old_key) {
perf_debug(" Didn't find previous compile in the shader cache for "
"debug\n");
return;
}
for (unsigned int i = 0; i < VERT_ATTRIB_MAX; i++) {
found |= key_debug(brw, "Vertex attrib w/a flags",
old_key->gl_attrib_wa_flags[i],
key->gl_attrib_wa_flags[i]);
}
found |= key_debug(brw, "legacy user clipping",
old_key->nr_userclip_plane_consts,
key->nr_userclip_plane_consts);
found |= key_debug(brw, "copy edgeflag",
old_key->copy_edgeflag, key->copy_edgeflag);
found |= key_debug(brw, "PointCoord replace",
old_key->point_coord_replace, key->point_coord_replace);
found |= key_debug(brw, "vertex color clamping",
old_key->clamp_vertex_color, key->clamp_vertex_color);
found |= brw_debug_recompile_sampler_key(brw, &old_key->tex, &key->tex);
if (!found) {
perf_debug(" Something else\n");
}
}
static bool
brw_codegen_vs_prog(struct brw_context *brw,
struct brw_program *vp,
struct brw_vs_prog_key *key)
{
const struct brw_compiler *compiler = brw->screen->compiler;
const struct gen_device_info *devinfo = &brw->screen->devinfo;
GLuint program_size;
const GLuint *program;
struct brw_vs_prog_data prog_data;
struct brw_stage_prog_data *stage_prog_data = &prog_data.base.base;
void *mem_ctx;
bool start_busy = false;
double start_time = 0;
memset(&prog_data, 0, sizeof(prog_data));
/* Use ALT floating point mode for ARB programs so that 0^0 == 1. */
if (vp->program.is_arb_asm)
stage_prog_data->use_alt_mode = true;
mem_ctx = ralloc_context(NULL);
brw_assign_common_binding_table_offsets(devinfo, &vp->program,
&prog_data.base.base, 0);
/* Allocate the references to the uniforms that will end up in the
* prog_data associated with the compiled program, and which will be freed
* by the state cache.
*/
int param_count = vp->program.nir->num_uniforms / 4;
prog_data.base.base.nr_image_params = vp->program.info.num_images;
/* vec4_visitor::setup_uniform_clipplane_values() also uploads user clip
* planes as uniforms.
*/
param_count += key->nr_userclip_plane_consts * 4;
stage_prog_data->param =
rzalloc_array(NULL, const gl_constant_value *, param_count);
stage_prog_data->pull_param =
rzalloc_array(NULL, const gl_constant_value *, param_count);
stage_prog_data->image_param =
rzalloc_array(NULL, struct brw_image_param,
stage_prog_data->nr_image_params);
stage_prog_data->nr_params = param_count;
if (!vp->program.is_arb_asm) {
brw_nir_setup_glsl_uniforms(vp->program.nir, &vp->program,
&prog_data.base.base,
compiler->scalar_stage[MESA_SHADER_VERTEX]);
} else {
brw_nir_setup_arb_uniforms(vp->program.nir, &vp->program,
&prog_data.base.base);
}
uint64_t outputs_written =
brw_vs_outputs_written(brw, key, vp->program.info.outputs_written);
prog_data.inputs_read = vp->program.info.inputs_read;
prog_data.double_inputs_read = vp->program.info.double_inputs_read;
if (key->copy_edgeflag) {
prog_data.inputs_read |= VERT_BIT_EDGEFLAG;
}
brw_compute_vue_map(devinfo,
&prog_data.base.vue_map, outputs_written,
vp->program.nir->info->separate_shader);
if (0) {
_mesa_fprint_program_opt(stderr, &vp->program, PROG_PRINT_DEBUG, true);
}
if (unlikely(brw->perf_debug)) {
start_busy = (brw->batch.last_bo &&
drm_intel_bo_busy(brw->batch.last_bo));
start_time = get_time();
}
if (unlikely(INTEL_DEBUG & DEBUG_VS)) {
if (vp->program.is_arb_asm)
brw_dump_arb_asm("vertex", &vp->program);
}
int st_index = -1;
if (INTEL_DEBUG & DEBUG_SHADER_TIME) {
st_index = brw_get_shader_time_index(brw, &vp->program, ST_VS,
!vp->program.is_arb_asm);
}
/* Emit GEN4 code.
*/
char *error_str;
program = brw_compile_vs(compiler, brw, mem_ctx, key, &prog_data,
vp->program.nir,
brw_select_clip_planes(&brw->ctx),
!_mesa_is_gles3(&brw->ctx),
st_index, &program_size, &error_str);
if (program == NULL) {
if (!vp->program.is_arb_asm) {
vp->program.sh.data->LinkStatus = false;
ralloc_strcat(&vp->program.sh.data->InfoLog, error_str);
}
_mesa_problem(NULL, "Failed to compile vertex shader: %s\n", error_str);
ralloc_free(mem_ctx);
return false;
}
if (unlikely(brw->perf_debug)) {
if (vp->compiled_once) {
brw_vs_debug_recompile(brw, &vp->program, key);
}
if (start_busy && !drm_intel_bo_busy(brw->batch.last_bo)) {
perf_debug("VS compile took %.03f ms and stalled the GPU\n",
(get_time() - start_time) * 1000);
}
vp->compiled_once = true;
}
/* Scratch space is used for register spilling */
brw_alloc_stage_scratch(brw, &brw->vs.base,
prog_data.base.base.total_scratch,
devinfo->max_vs_threads);
brw_upload_cache(&brw->cache, BRW_CACHE_VS_PROG,
key, sizeof(struct brw_vs_prog_key),
program, program_size,
&prog_data, sizeof(prog_data),
&brw->vs.base.prog_offset, &brw->vs.base.prog_data);
ralloc_free(mem_ctx);
return true;
}
static bool
brw_vs_state_dirty(const struct brw_context *brw)
{
return brw_state_dirty(brw,
_NEW_BUFFERS |
_NEW_LIGHT |
_NEW_POINT |
_NEW_POLYGON |
_NEW_TEXTURE |
_NEW_TRANSFORM,
BRW_NEW_VERTEX_PROGRAM |
BRW_NEW_VS_ATTRIB_WORKAROUNDS);
}
void
brw_vs_populate_key(struct brw_context *brw,
struct brw_vs_prog_key *key)
{
struct gl_context *ctx = &brw->ctx;
/* BRW_NEW_VERTEX_PROGRAM */
struct brw_program *vp = (struct brw_program *)brw->vertex_program;
struct gl_program *prog = (struct gl_program *) brw->vertex_program;
memset(key, 0, sizeof(*key));
/* Just upload the program verbatim for now. Always send it all
* the inputs it asks for, whether they are varying or not.
*/
key->program_string_id = vp->id;
if (ctx->Transform.ClipPlanesEnabled != 0 &&
(ctx->API == API_OPENGL_COMPAT || ctx->API == API_OPENGLES) &&
vp->program.ClipDistanceArraySize == 0) {
key->nr_userclip_plane_consts =
_mesa_logbase2(ctx->Transform.ClipPlanesEnabled) + 1;
}
if (brw->gen < 6) {
/* _NEW_POLYGON */
key->copy_edgeflag = (ctx->Polygon.FrontMode != GL_FILL ||
ctx->Polygon.BackMode != GL_FILL);
/* _NEW_POINT */
if (ctx->Point.PointSprite) {
key->point_coord_replace = ctx->Point.CoordReplace & 0xff;
}
}
if (prog->info.outputs_written &
(VARYING_BIT_COL0 | VARYING_BIT_COL1 | VARYING_BIT_BFC0 |
VARYING_BIT_BFC1)) {
/* _NEW_LIGHT | _NEW_BUFFERS */
key->clamp_vertex_color = ctx->Light._ClampVertexColor;
}
/* _NEW_TEXTURE */
brw_populate_sampler_prog_key_data(ctx, prog, &key->tex);
/* BRW_NEW_VS_ATTRIB_WORKAROUNDS */
if (brw->gen < 8 && !brw->is_haswell) {
memcpy(key->gl_attrib_wa_flags, brw->vb.attrib_wa_flags,
sizeof(brw->vb.attrib_wa_flags));
}
}
void
brw_upload_vs_prog(struct brw_context *brw)
{
struct brw_vs_prog_key key;
/* BRW_NEW_VERTEX_PROGRAM */
struct brw_program *vp = (struct brw_program *)brw->vertex_program;
if (!brw_vs_state_dirty(brw))
return;
brw_vs_populate_key(brw, &key);
if (!brw_search_cache(&brw->cache, BRW_CACHE_VS_PROG,
&key, sizeof(key),
&brw->vs.base.prog_offset, &brw->vs.base.prog_data)) {
bool success = brw_codegen_vs_prog(brw, vp, &key);
(void) success;
assert(success);
}
}
bool
brw_vs_precompile(struct gl_context *ctx, struct gl_program *prog)
{
struct brw_context *brw = brw_context(ctx);
struct brw_vs_prog_key key;
uint32_t old_prog_offset = brw->vs.base.prog_offset;
struct brw_stage_prog_data *old_prog_data = brw->vs.base.prog_data;
bool success;
struct brw_program *bvp = brw_program(prog);
memset(&key, 0, sizeof(key));
brw_setup_tex_for_precompile(brw, &key.tex, prog);
key.program_string_id = bvp->id;
key.clamp_vertex_color =
(prog->info.outputs_written &
(VARYING_BIT_COL0 | VARYING_BIT_COL1 | VARYING_BIT_BFC0 |
VARYING_BIT_BFC1));
success = brw_codegen_vs_prog(brw, bvp, &key);
brw->vs.base.prog_offset = old_prog_offset;
brw->vs.base.prog_data = old_prog_data;
return success;
}
|