1 /*
2 * Copyright © 2008, 2009 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 #include <inttypes.h> /* for PRIx64 macro */
24 #include <stdio.h>
25 #include <stdarg.h>
26 #include <string.h>
27 #include <assert.h>
28
29 #include "main/context.h"
30 #include "main/debug_output.h"
31 #include "main/formats.h"
32 #include "main/shaderobj.h"
33 #include "util/u_atomic.h" /* for p_atomic_cmpxchg */
34 #include "util/ralloc.h"
35 #include "util/disk_cache.h"
36 #include "util/mesa-blake3.h"
37 #include "ast.h"
38 #include "glsl_parser_extras.h"
39 #include "glsl_parser.h"
40 #include "glsl_to_nir.h"
41 #include "ir_optimization.h"
42 #include "builtin_functions.h"
43
44 /**
45 * Format a short human-readable description of the given GLSL version.
46 */
47 const char *
glsl_compute_version_string(void * mem_ctx,bool is_es,unsigned version)48 glsl_compute_version_string(void *mem_ctx, bool is_es, unsigned version)
49 {
50 return ralloc_asprintf(mem_ctx, "GLSL%s %d.%02d", is_es ? " ES" : "",
51 version / 100, version % 100);
52 }
53
54
55 static const unsigned known_desktop_glsl_versions[] =
56 { 110, 120, 130, 140, 150, 330, 400, 410, 420, 430, 440, 450, 460 };
57 static const unsigned known_desktop_gl_versions[] =
58 { 20, 21, 30, 31, 32, 33, 40, 41, 42, 43, 44, 45, 46 };
59
60
_mesa_glsl_parse_state(struct gl_context * _ctx,gl_shader_stage stage,void * mem_ctx)61 _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
62 gl_shader_stage stage,
63 void *mem_ctx)
64 : ctx(_ctx), exts(&_ctx->Extensions), consts(&_ctx->Const),
65 api(_ctx->API), cs_input_local_size_specified(false), cs_input_local_size(),
66 switch_state(), warnings_enabled(true)
67 {
68 assert(stage < MESA_SHADER_STAGES);
69 this->stage = stage;
70
71 this->scanner = NULL;
72 this->translation_unit.make_empty();
73 this->symbols = new(mem_ctx) glsl_symbol_table;
74
75 this->linalloc = linear_context(this);
76
77 this->info_log = ralloc_strdup(mem_ctx, "");
78 this->error = false;
79 this->loop_nesting_ast = NULL;
80
81 this->uses_builtin_functions = false;
82
83 /* Set default language version and extensions */
84 this->language_version = 110;
85 this->forced_language_version = ctx->Const.ForceGLSLVersion;
86 if (ctx->Const.GLSLZeroInit == 1) {
87 this->zero_init = (1u << ir_var_auto) | (1u << ir_var_temporary) | (1u << ir_var_shader_out);
88 } else if (ctx->Const.GLSLZeroInit == 2) {
89 this->zero_init = (1u << ir_var_auto) | (1u << ir_var_temporary) | (1u << ir_var_function_out);
90 } else {
91 this->zero_init = 0;
92 }
93 this->gl_version = 20;
94 this->compat_shader = true;
95 this->es_shader = false;
96 this->ARB_texture_rectangle_enable = true;
97
98 /* OpenGL ES 2.0 has different defaults from desktop GL. */
99 if (_mesa_is_gles2(ctx)) {
100 this->language_version = 100;
101 this->es_shader = true;
102 this->ARB_texture_rectangle_enable = false;
103 }
104
105 this->extensions = &ctx->Extensions;
106
107 this->Const.MaxLights = ctx->Const.MaxLights;
108 this->Const.MaxClipPlanes = ctx->Const.MaxClipPlanes;
109 this->Const.MaxTextureUnits = ctx->Const.MaxTextureUnits;
110 this->Const.MaxTextureCoords = ctx->Const.MaxTextureCoordUnits;
111 this->Const.MaxVertexAttribs = ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs;
112 this->Const.MaxVertexUniformComponents = ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents;
113 this->Const.MaxVertexTextureImageUnits = ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits;
114 this->Const.MaxCombinedTextureImageUnits = ctx->Const.MaxCombinedTextureImageUnits;
115 this->Const.MaxTextureImageUnits = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits;
116 this->Const.MaxFragmentUniformComponents = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents;
117 this->Const.MinProgramTexelOffset = ctx->Const.MinProgramTexelOffset;
118 this->Const.MaxProgramTexelOffset = ctx->Const.MaxProgramTexelOffset;
119
120 this->Const.MaxDrawBuffers = ctx->Const.MaxDrawBuffers;
121
122 this->Const.MaxDualSourceDrawBuffers = ctx->Const.MaxDualSourceDrawBuffers;
123
124 /* 1.50 constants */
125 this->Const.MaxVertexOutputComponents = ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
126 this->Const.MaxGeometryInputComponents = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxInputComponents;
127 this->Const.MaxGeometryOutputComponents = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxOutputComponents;
128 this->Const.MaxGeometryShaderInvocations = ctx->Const.MaxGeometryShaderInvocations;
129 this->Const.MaxFragmentInputComponents = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents;
130 this->Const.MaxGeometryTextureImageUnits = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits;
131 this->Const.MaxGeometryOutputVertices = ctx->Const.MaxGeometryOutputVertices;
132 this->Const.MaxGeometryTotalOutputComponents = ctx->Const.MaxGeometryTotalOutputComponents;
133 this->Const.MaxGeometryUniformComponents = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxUniformComponents;
134
135 this->Const.MaxVertexAtomicCounters = ctx->Const.Program[MESA_SHADER_VERTEX].MaxAtomicCounters;
136 this->Const.MaxTessControlAtomicCounters = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxAtomicCounters;
137 this->Const.MaxTessEvaluationAtomicCounters = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxAtomicCounters;
138 this->Const.MaxGeometryAtomicCounters = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxAtomicCounters;
139 this->Const.MaxFragmentAtomicCounters = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters;
140 this->Const.MaxComputeAtomicCounters = ctx->Const.Program[MESA_SHADER_COMPUTE].MaxAtomicCounters;
141 this->Const.MaxCombinedAtomicCounters = ctx->Const.MaxCombinedAtomicCounters;
142 this->Const.MaxAtomicBufferBindings = ctx->Const.MaxAtomicBufferBindings;
143 this->Const.MaxVertexAtomicCounterBuffers =
144 ctx->Const.Program[MESA_SHADER_VERTEX].MaxAtomicBuffers;
145 this->Const.MaxTessControlAtomicCounterBuffers =
146 ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers;
147 this->Const.MaxTessEvaluationAtomicCounterBuffers =
148 ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers;
149 this->Const.MaxGeometryAtomicCounterBuffers =
150 ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers;
151 this->Const.MaxFragmentAtomicCounterBuffers =
152 ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
153 this->Const.MaxComputeAtomicCounterBuffers =
154 ctx->Const.Program[MESA_SHADER_COMPUTE].MaxAtomicBuffers;
155 this->Const.MaxCombinedAtomicCounterBuffers =
156 ctx->Const.MaxCombinedAtomicBuffers;
157 this->Const.MaxAtomicCounterBufferSize =
158 ctx->Const.MaxAtomicBufferSize;
159
160 /* ARB_enhanced_layouts constants */
161 this->Const.MaxTransformFeedbackBuffers = ctx->Const.MaxTransformFeedbackBuffers;
162 this->Const.MaxTransformFeedbackInterleavedComponents = ctx->Const.MaxTransformFeedbackInterleavedComponents;
163
164 /* Compute shader constants */
165 for (unsigned i = 0; i < ARRAY_SIZE(this->Const.MaxComputeWorkGroupCount); i++)
166 this->Const.MaxComputeWorkGroupCount[i] = ctx->Const.MaxComputeWorkGroupCount[i];
167 for (unsigned i = 0; i < ARRAY_SIZE(this->Const.MaxComputeWorkGroupSize); i++)
168 this->Const.MaxComputeWorkGroupSize[i] = ctx->Const.MaxComputeWorkGroupSize[i];
169
170 this->Const.MaxComputeTextureImageUnits = ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits;
171 this->Const.MaxComputeUniformComponents = ctx->Const.Program[MESA_SHADER_COMPUTE].MaxUniformComponents;
172
173 this->Const.MaxImageUnits = ctx->Const.MaxImageUnits;
174 this->Const.MaxCombinedShaderOutputResources = ctx->Const.MaxCombinedShaderOutputResources;
175 this->Const.MaxImageSamples = ctx->Const.MaxImageSamples;
176 this->Const.MaxVertexImageUniforms = ctx->Const.Program[MESA_SHADER_VERTEX].MaxImageUniforms;
177 this->Const.MaxTessControlImageUniforms = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms;
178 this->Const.MaxTessEvaluationImageUniforms = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms;
179 this->Const.MaxGeometryImageUniforms = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxImageUniforms;
180 this->Const.MaxFragmentImageUniforms = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxImageUniforms;
181 this->Const.MaxComputeImageUniforms = ctx->Const.Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
182 this->Const.MaxCombinedImageUniforms = ctx->Const.MaxCombinedImageUniforms;
183
184 /* ARB_viewport_array */
185 this->Const.MaxViewports = ctx->Const.MaxViewports;
186
187 /* tessellation shader constants */
188 this->Const.MaxPatchVertices = ctx->Const.MaxPatchVertices;
189 this->Const.MaxTessGenLevel = ctx->Const.MaxTessGenLevel;
190 this->Const.MaxTessControlInputComponents = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxInputComponents;
191 this->Const.MaxTessControlOutputComponents = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxOutputComponents;
192 this->Const.MaxTessControlTextureImageUnits = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits;
193 this->Const.MaxTessEvaluationInputComponents = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxInputComponents;
194 this->Const.MaxTessEvaluationOutputComponents = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxOutputComponents;
195 this->Const.MaxTessEvaluationTextureImageUnits = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits;
196 this->Const.MaxTessPatchComponents = ctx->Const.MaxTessPatchComponents;
197 this->Const.MaxTessControlTotalOutputComponents = ctx->Const.MaxTessControlTotalOutputComponents;
198 this->Const.MaxTessControlUniformComponents = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents;
199 this->Const.MaxTessEvaluationUniformComponents = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents;
200
201 /* GL 4.5 / OES_sample_variables */
202 this->Const.MaxSamples = ctx->Const.MaxSamples;
203
204 this->current_function = NULL;
205 this->toplevel_ir = NULL;
206 this->found_return = false;
207 this->found_begin_interlock = false;
208 this->found_end_interlock = false;
209 this->all_invariant = false;
210 this->user_structures = NULL;
211 this->num_user_structures = 0;
212 this->num_subroutines = 0;
213 this->subroutines = NULL;
214 this->num_subroutine_types = 0;
215 this->subroutine_types = NULL;
216
217 /* supported_versions should be large enough to support the known desktop
218 * GLSL versions plus 4 GLES versions (ES 1.00, ES 3.00, ES 3.10, ES 3.20)
219 */
220 STATIC_ASSERT((ARRAY_SIZE(known_desktop_glsl_versions) + 4) ==
221 ARRAY_SIZE(this->supported_versions));
222
223 /* Populate the list of supported GLSL versions */
224 /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or
225 * the OpenGL 3.2 Core context is supported, this logic will need
226 * change. Older versions of GLSL are no longer supported
227 * outside the compatibility contexts of 3.x.
228 */
229 this->num_supported_versions = 0;
230 if (_mesa_is_desktop_gl(ctx)) {
231 for (unsigned i = 0; i < ARRAY_SIZE(known_desktop_glsl_versions); i++) {
232 if (known_desktop_glsl_versions[i] <= ctx->Const.GLSLVersion) {
233 this->supported_versions[this->num_supported_versions].ver
234 = known_desktop_glsl_versions[i];
235 this->supported_versions[this->num_supported_versions].gl_ver
236 = known_desktop_gl_versions[i];
237 this->supported_versions[this->num_supported_versions].es = false;
238 this->num_supported_versions++;
239 }
240 }
241 }
242 if (_mesa_is_gles2_compatible(ctx)) {
243 this->supported_versions[this->num_supported_versions].ver = 100;
244 this->supported_versions[this->num_supported_versions].gl_ver = 20;
245 this->supported_versions[this->num_supported_versions].es = true;
246 this->num_supported_versions++;
247 }
248 if (_mesa_is_gles3_compatible(ctx)) {
249 this->supported_versions[this->num_supported_versions].ver = 300;
250 this->supported_versions[this->num_supported_versions].gl_ver = 30;
251 this->supported_versions[this->num_supported_versions].es = true;
252 this->num_supported_versions++;
253 }
254 if (_mesa_is_gles31_compatible(ctx)) {
255 this->supported_versions[this->num_supported_versions].ver = 310;
256 this->supported_versions[this->num_supported_versions].gl_ver = 31;
257 this->supported_versions[this->num_supported_versions].es = true;
258 this->num_supported_versions++;
259 }
260 if (_mesa_is_gles32_compatible(ctx)) {
261 this->supported_versions[this->num_supported_versions].ver = 320;
262 this->supported_versions[this->num_supported_versions].gl_ver = 32;
263 this->supported_versions[this->num_supported_versions].es = true;
264 this->num_supported_versions++;
265 }
266
267 /* Create a string for use in error messages to tell the user which GLSL
268 * versions are supported.
269 */
270 char *supported = ralloc_strdup(this, "");
271 for (unsigned i = 0; i < this->num_supported_versions; i++) {
272 unsigned ver = this->supported_versions[i].ver;
273 const char *const prefix = (i == 0)
274 ? ""
275 : ((i == this->num_supported_versions - 1) ? ", and " : ", ");
276 const char *const suffix = (this->supported_versions[i].es) ? " ES" : "";
277
278 ralloc_asprintf_append(& supported, "%s%u.%02u%s",
279 prefix,
280 ver / 100, ver % 100,
281 suffix);
282 }
283
284 this->supported_version_string = supported;
285
286 if (ctx->Const.ForceGLSLExtensionsWarn)
287 _mesa_glsl_process_extension("all", NULL, "warn", NULL, this);
288
289 this->default_uniform_qualifier = new(this) ast_type_qualifier();
290 this->default_uniform_qualifier->flags.q.shared = 1;
291 this->default_uniform_qualifier->flags.q.column_major = 1;
292
293 this->default_shader_storage_qualifier = new(this) ast_type_qualifier();
294 this->default_shader_storage_qualifier->flags.q.shared = 1;
295 this->default_shader_storage_qualifier->flags.q.column_major = 1;
296
297 this->fs_uses_gl_fragcoord = false;
298 this->fs_redeclares_gl_fragcoord = false;
299 this->fs_origin_upper_left = false;
300 this->fs_pixel_center_integer = false;
301 this->fs_redeclares_gl_fragcoord_with_no_layout_qualifiers = false;
302
303 this->gs_input_prim_type_specified = false;
304 this->tcs_output_vertices_specified = false;
305 this->gs_input_size = 0;
306 this->in_qualifier = new(this) ast_type_qualifier();
307 this->out_qualifier = new(this) ast_type_qualifier();
308 this->fs_early_fragment_tests = false;
309 this->fs_inner_coverage = false;
310 this->fs_post_depth_coverage = false;
311 this->fs_pixel_interlock_ordered = false;
312 this->fs_pixel_interlock_unordered = false;
313 this->fs_sample_interlock_ordered = false;
314 this->fs_sample_interlock_unordered = false;
315 this->fs_blend_support = 0;
316 memset(this->atomic_counter_offsets, 0,
317 sizeof(this->atomic_counter_offsets));
318 this->allow_extension_directive_midshader =
319 ctx->Const.AllowGLSLExtensionDirectiveMidShader;
320 this->alias_shader_extension =
321 ctx->Const.AliasShaderExtension;
322 this->allow_vertex_texture_bias =
323 ctx->Const.AllowVertexTextureBias;
324 this->allow_glsl_120_subset_in_110 =
325 ctx->Const.AllowGLSL120SubsetIn110;
326 this->allow_builtin_variable_redeclaration =
327 ctx->Const.AllowGLSLBuiltinVariableRedeclaration;
328 this->ignore_write_to_readonly_var =
329 ctx->Const.GLSLIgnoreWriteToReadonlyVar;
330
331 this->cs_input_local_size_variable_specified = false;
332
333 /* ARB_bindless_texture */
334 this->bindless_sampler_specified = false;
335 this->bindless_image_specified = false;
336 this->bound_sampler_specified = false;
337 this->bound_image_specified = false;
338
339 this->language_version = this->forced_language_version ?
340 this->forced_language_version : this->language_version;
341 set_valid_gl_and_glsl_versions(NULL);
342 }
343
344 /**
345 * Determine whether the current GLSL version is sufficiently high to support
346 * a certain feature, and generate an error message if it isn't.
347 *
348 * \param required_glsl_version and \c required_glsl_es_version are
349 * interpreted as they are in _mesa_glsl_parse_state::is_version().
350 *
351 * \param locp is the parser location where the error should be reported.
352 *
353 * \param fmt (and additional arguments) constitute a printf-style error
354 * message to report if the version check fails. Information about the
355 * current and required GLSL versions will be appended. So, for example, if
356 * the GLSL version being compiled is 1.20, and check_version(130, 300, locp,
357 * "foo unsupported") is called, the error message will be "foo unsupported in
358 * GLSL 1.20 (GLSL 1.30 or GLSL 3.00 ES required)".
359 */
360 bool
check_version(unsigned required_glsl_version,unsigned required_glsl_es_version,YYLTYPE * locp,const char * fmt,...)361 _mesa_glsl_parse_state::check_version(unsigned required_glsl_version,
362 unsigned required_glsl_es_version,
363 YYLTYPE *locp, const char *fmt, ...)
364 {
365 if (this->is_version(required_glsl_version, required_glsl_es_version))
366 return true;
367
368 va_list args;
369 va_start(args, fmt);
370 char *problem = ralloc_vasprintf(this, fmt, args);
371 va_end(args);
372 const char *glsl_version_string
373 = glsl_compute_version_string(this, false, required_glsl_version);
374 const char *glsl_es_version_string
375 = glsl_compute_version_string(this, true, required_glsl_es_version);
376 const char *requirement_string = "";
377 if (required_glsl_version && required_glsl_es_version) {
378 requirement_string = ralloc_asprintf(this, " (%s or %s required)",
379 glsl_version_string,
380 glsl_es_version_string);
381 } else if (required_glsl_version) {
382 requirement_string = ralloc_asprintf(this, " (%s required)",
383 glsl_version_string);
384 } else if (required_glsl_es_version) {
385 requirement_string = ralloc_asprintf(this, " (%s required)",
386 glsl_es_version_string);
387 }
388 _mesa_glsl_error(locp, this, "%s in %s%s",
389 problem, this->get_version_string(),
390 requirement_string);
391
392 return false;
393 }
394
395 /**
396 * This makes sure any GLSL versions defined or overridden are valid. If not it
397 * sets a valid value.
398 */
399 void
set_valid_gl_and_glsl_versions(YYLTYPE * locp)400 _mesa_glsl_parse_state::set_valid_gl_and_glsl_versions(YYLTYPE *locp)
401 {
402 bool supported = false;
403 for (unsigned i = 0; i < this->num_supported_versions; i++) {
404 if (this->supported_versions[i].ver == this->language_version
405 && this->supported_versions[i].es == this->es_shader) {
406 this->gl_version = this->supported_versions[i].gl_ver;
407 supported = true;
408 break;
409 }
410 }
411
412 if (!supported) {
413 if (locp) {
414 _mesa_glsl_error(locp, this, "%s is not supported. "
415 "Supported versions are: %s",
416 this->get_version_string(),
417 this->supported_version_string);
418 }
419
420 /* On exit, the language_version must be set to a valid value.
421 * Later calls to _mesa_glsl_initialize_types will misbehave if
422 * the version is invalid.
423 */
424 switch (this->api) {
425 case API_OPENGL_COMPAT:
426 case API_OPENGL_CORE:
427 this->language_version = this->consts->GLSLVersion;
428 break;
429
430 case API_OPENGLES:
431 FALLTHROUGH;
432
433 case API_OPENGLES2:
434 this->language_version = 100;
435 break;
436 }
437 }
438 }
439
440 /**
441 * Process a GLSL #version directive.
442 *
443 * \param version is the integer that follows the #version token.
444 *
445 * \param ident is a string identifier that follows the integer, if any is
446 * present. Otherwise NULL.
447 */
448 void
process_version_directive(YYLTYPE * locp,int version,const char * ident)449 _mesa_glsl_parse_state::process_version_directive(YYLTYPE *locp, int version,
450 const char *ident)
451 {
452 bool es_token_present = false;
453 bool compat_token_present = false;
454 if (ident) {
455 if (strcmp(ident, "es") == 0) {
456 es_token_present = true;
457 } else if (version >= 150) {
458 if (strcmp(ident, "core") == 0) {
459 /* Accept the token. There's no need to record that this is
460 * a core profile shader since that's the only profile we support.
461 */
462 } else if (strcmp(ident, "compatibility") == 0) {
463 compat_token_present = true;
464
465 if (this->api != API_OPENGL_COMPAT &&
466 !this->consts->AllowGLSLCompatShaders) {
467 _mesa_glsl_error(locp, this,
468 "the compatibility profile is not supported");
469 }
470 } else {
471 _mesa_glsl_error(locp, this,
472 "\"%s\" is not a valid shading language profile; "
473 "if present, it must be \"core\"", ident);
474 }
475 } else {
476 _mesa_glsl_error(locp, this,
477 "illegal text following version number");
478 }
479 }
480
481 this->es_shader = es_token_present;
482 if (version == 100) {
483 if (es_token_present) {
484 _mesa_glsl_error(locp, this,
485 "GLSL 1.00 ES should be selected using "
486 "`#version 100'");
487 } else {
488 this->es_shader = true;
489 }
490 }
491
492 if (this->es_shader) {
493 this->ARB_texture_rectangle_enable = false;
494 }
495
496 if (this->forced_language_version)
497 this->language_version = this->forced_language_version;
498 else
499 this->language_version = version;
500
501 this->compat_shader = compat_token_present ||
502 this->consts->ForceCompatShaders ||
503 (this->api == API_OPENGL_COMPAT &&
504 this->language_version == 140) ||
505 (!this->es_shader && this->language_version < 140);
506
507 set_valid_gl_and_glsl_versions(locp);
508 }
509
510
511 /* This helper function will append the given message to the shader's
512 info log and report it via GL_ARB_debug_output. Per that extension,
513 'type' is one of the enum values classifying the message, and
514 'id' is the implementation-defined ID of the given message. */
515 static void
_mesa_glsl_msg(const YYLTYPE * locp,_mesa_glsl_parse_state * state,GLenum type,const char * fmt,va_list ap)516 _mesa_glsl_msg(const YYLTYPE *locp, _mesa_glsl_parse_state *state,
517 GLenum type, const char *fmt, va_list ap)
518 {
519 bool error = (type == MESA_DEBUG_TYPE_ERROR);
520 GLuint msg_id = 0;
521
522 assert(state->info_log != NULL);
523
524 /* Get the offset that the new message will be written to. */
525 int msg_offset = strlen(state->info_log);
526
527 if (locp->path) {
528 ralloc_asprintf_append(&state->info_log, "\"%s\"", locp->path);
529 } else {
530 ralloc_asprintf_append(&state->info_log, "%u", locp->source);
531 }
532 ralloc_asprintf_append(&state->info_log, ":%u(%u): %s: ",
533 locp->first_line, locp->first_column,
534 error ? "error" : "warning");
535
536 ralloc_vasprintf_append(&state->info_log, fmt, ap);
537
538 const char *const msg = &state->info_log[msg_offset];
539 struct gl_context *ctx = state->ctx;
540
541 /* Report the error via GL_ARB_debug_output. */
542 _mesa_shader_debug(ctx, type, &msg_id, msg);
543
544 ralloc_strcat(&state->info_log, "\n");
545 }
546
547 void
_mesa_glsl_error(YYLTYPE * locp,_mesa_glsl_parse_state * state,const char * fmt,...)548 _mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state,
549 const char *fmt, ...)
550 {
551 va_list ap;
552
553 state->error = true;
554
555 va_start(ap, fmt);
556 _mesa_glsl_msg(locp, state, MESA_DEBUG_TYPE_ERROR, fmt, ap);
557 va_end(ap);
558 }
559
560
561 void
_mesa_glsl_warning(const YYLTYPE * locp,_mesa_glsl_parse_state * state,const char * fmt,...)562 _mesa_glsl_warning(const YYLTYPE *locp, _mesa_glsl_parse_state *state,
563 const char *fmt, ...)
564 {
565 if (state->warnings_enabled) {
566 va_list ap;
567
568 va_start(ap, fmt);
569 _mesa_glsl_msg(locp, state, MESA_DEBUG_TYPE_OTHER, fmt, ap);
570 va_end(ap);
571 }
572 }
573
574
575 /**
576 * Enum representing the possible behaviors that can be specified in
577 * an #extension directive.
578 */
579 enum ext_behavior {
580 extension_disable,
581 extension_enable,
582 extension_require,
583 extension_warn
584 };
585
586 /**
587 * Element type for _mesa_glsl_supported_extensions
588 */
589 struct _mesa_glsl_extension {
590 /**
591 * Name of the extension when referred to in a GLSL extension
592 * statement
593 */
594 const char *name;
595
596 /**
597 * Whether this extension is a part of AEP
598 */
599 bool aep;
600
601 /**
602 * Predicate that checks whether the relevant extension is available for
603 * this context.
604 */
605 bool (*available_pred)(const _mesa_glsl_parse_state *,
606 gl_api api, uint8_t version);
607
608 /**
609 * Flag in the _mesa_glsl_parse_state struct that should be set
610 * when this extension is enabled.
611 *
612 * See note in _mesa_glsl_extension::supported_flag about "pointer
613 * to member" types.
614 */
615 bool _mesa_glsl_parse_state::* enable_flag;
616
617 /**
618 * Flag in the _mesa_glsl_parse_state struct that should be set
619 * when the shader requests "warn" behavior for this extension.
620 *
621 * See note in _mesa_glsl_extension::supported_flag about "pointer
622 * to member" types.
623 */
624 bool _mesa_glsl_parse_state::* warn_flag;
625
626
627 bool compatible_with_state(const _mesa_glsl_parse_state *state,
628 gl_api api, uint8_t gl_version) const;
629 void set_flags(_mesa_glsl_parse_state *state, ext_behavior behavior) const;
630 };
631
632 /** Checks if the context supports a user-facing extension */
633 #define EXT(name_str, driver_cap, ...) \
634 static UNUSED bool \
635 has_##name_str(const _mesa_glsl_parse_state *state, gl_api api, uint8_t version) \
636 { \
637 return state->exts->driver_cap && (version >= \
638 _mesa_extension_table[MESA_EXTENSION_##name_str].version[api]); \
639 }
640 #include "main/extensions_table.h"
641 #undef EXT
642
643 static unsigned
mesa_stage_to_gl_stage_bit(unsigned stage)644 mesa_stage_to_gl_stage_bit(unsigned stage)
645 {
646 switch (stage) {
647 case MESA_SHADER_VERTEX:
648 return GL_VERTEX_SHADER_BIT;
649 case MESA_SHADER_TESS_CTRL:
650 return GL_TESS_CONTROL_SHADER_BIT;
651 case MESA_SHADER_TESS_EVAL:
652 return GL_TESS_EVALUATION_SHADER_BIT;
653 case MESA_SHADER_GEOMETRY:
654 return GL_GEOMETRY_SHADER_BIT;
655 case MESA_SHADER_FRAGMENT:
656 return GL_FRAGMENT_SHADER_BIT;
657 case MESA_SHADER_COMPUTE:
658 return GL_COMPUTE_SHADER_BIT;
659 default:
660 unreachable("glsl parser: invalid shader stage");
661 }
662 }
663
664 #define HAS_SUBGROUP_EXT(name, feature) \
665 static bool \
666 has_KHR_shader_subgroup_##name(const _mesa_glsl_parse_state *state, gl_api api, uint8_t version) \
667 { \
668 unsigned stage = mesa_stage_to_gl_stage_bit(state->stage); \
669 return state->exts->KHR_shader_subgroup && \
670 (version >= _mesa_extension_table[MESA_EXTENSION_KHR_shader_subgroup].version[api]) && \
671 (state->consts->ShaderSubgroupSupportedStages & stage) && \
672 (state->consts->ShaderSubgroupSupportedFeatures & GL_SUBGROUP_FEATURE_##feature##_BIT_KHR); \
673 }
674
HAS_SUBGROUP_EXT(basic,BASIC)675 HAS_SUBGROUP_EXT(basic, BASIC)
676 HAS_SUBGROUP_EXT(vote, VOTE)
677 HAS_SUBGROUP_EXT(arithmetic, ARITHMETIC)
678 HAS_SUBGROUP_EXT(ballot, BALLOT)
679 HAS_SUBGROUP_EXT(shuffle, SHUFFLE)
680 HAS_SUBGROUP_EXT(shuffle_relative, SHUFFLE_RELATIVE)
681 HAS_SUBGROUP_EXT(clustered, CLUSTERED)
682 HAS_SUBGROUP_EXT(quad_, QUAD)
683
684 static bool
685 has_KHR_shader_subgroup_quad(const _mesa_glsl_parse_state *state, gl_api api, uint8_t version)
686 {
687 return has_KHR_shader_subgroup_quad_(state, api, version) &&
688 ((state->stage == MESA_SHADER_FRAGMENT || state->stage == MESA_SHADER_COMPUTE) ||
689 state->consts->ShaderSubgroupQuadAllStages);
690 }
691
692 #define EXT(NAME) \
693 { "GL_" #NAME, false, has_##NAME, \
694 &_mesa_glsl_parse_state::NAME##_enable, \
695 &_mesa_glsl_parse_state::NAME##_warn }
696
697 #define EXT_AEP(NAME) \
698 { "GL_" #NAME, true, has_##NAME, \
699 &_mesa_glsl_parse_state::NAME##_enable, \
700 &_mesa_glsl_parse_state::NAME##_warn }
701
702 /**
703 * Table of extensions that can be enabled/disabled within a shader,
704 * and the conditions under which they are supported.
705 */
706 static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
707 /* ARB extensions go here, sorted alphabetically.
708 */
709 EXT(ARB_ES3_1_compatibility),
710 EXT(ARB_ES3_2_compatibility),
711 EXT(ARB_arrays_of_arrays),
712 EXT(ARB_bindless_texture),
713 EXT(ARB_compatibility),
714 EXT(ARB_compute_shader),
715 EXT(ARB_compute_variable_group_size),
716 EXT(ARB_conservative_depth),
717 EXT(ARB_cull_distance),
718 EXT(ARB_derivative_control),
719 EXT(ARB_draw_buffers),
720 EXT(ARB_draw_instanced),
721 EXT(ARB_enhanced_layouts),
722 EXT(ARB_explicit_attrib_location),
723 EXT(ARB_explicit_uniform_location),
724 EXT(ARB_fragment_coord_conventions),
725 EXT(ARB_fragment_layer_viewport),
726 EXT(ARB_fragment_shader_interlock),
727 EXT(ARB_gpu_shader5),
728 EXT(ARB_gpu_shader_fp64),
729 EXT(ARB_gpu_shader_int64),
730 EXT(ARB_post_depth_coverage),
731 EXT(ARB_sample_shading),
732 EXT(ARB_separate_shader_objects),
733 EXT(ARB_shader_atomic_counter_ops),
734 EXT(ARB_shader_atomic_counters),
735 EXT(ARB_shader_ballot),
736 EXT(ARB_shader_bit_encoding),
737 EXT(ARB_shader_clock),
738 EXT(ARB_shader_draw_parameters),
739 EXT(ARB_shader_group_vote),
740 EXT(ARB_shader_image_load_store),
741 EXT(ARB_shader_image_size),
742 EXT(ARB_shader_precision),
743 EXT(ARB_shader_stencil_export),
744 EXT(ARB_shader_storage_buffer_object),
745 EXT(ARB_shader_subroutine),
746 EXT(ARB_shader_texture_image_samples),
747 EXT(ARB_shader_texture_lod),
748 EXT(ARB_shader_viewport_layer_array),
749 EXT(ARB_shading_language_420pack),
750 EXT(ARB_shading_language_include),
751 EXT(ARB_shading_language_packing),
752 EXT(ARB_sparse_texture2),
753 EXT(ARB_sparse_texture_clamp),
754 EXT(ARB_tessellation_shader),
755 EXT(ARB_texture_cube_map_array),
756 EXT(ARB_texture_gather),
757 EXT(ARB_texture_multisample),
758 EXT(ARB_texture_query_levels),
759 EXT(ARB_texture_query_lod),
760 EXT(ARB_texture_rectangle),
761 EXT(ARB_uniform_buffer_object),
762 EXT(ARB_vertex_attrib_64bit),
763 EXT(ARB_viewport_array),
764
765 /* KHR extensions go here, sorted alphabetically.
766 */
767 EXT_AEP(KHR_blend_equation_advanced),
768 EXT(KHR_shader_subgroup_arithmetic),
769 EXT(KHR_shader_subgroup_ballot),
770 EXT(KHR_shader_subgroup_basic),
771 EXT(KHR_shader_subgroup_clustered),
772 EXT(KHR_shader_subgroup_quad),
773 EXT(KHR_shader_subgroup_shuffle),
774 EXT(KHR_shader_subgroup_shuffle_relative),
775 EXT(KHR_shader_subgroup_vote),
776
777 /* OES extensions go here, sorted alphabetically.
778 */
779 EXT(OES_EGL_image_external),
780 EXT(OES_EGL_image_external_essl3),
781 EXT(OES_geometry_point_size),
782 EXT(OES_geometry_shader),
783 EXT(OES_gpu_shader5),
784 EXT(OES_primitive_bounding_box),
785 EXT_AEP(OES_sample_variables),
786 EXT_AEP(OES_shader_image_atomic),
787 EXT(OES_shader_io_blocks),
788 EXT_AEP(OES_shader_multisample_interpolation),
789 EXT(OES_standard_derivatives),
790 EXT(OES_tessellation_point_size),
791 EXT(OES_tessellation_shader),
792 EXT(OES_texture_3D),
793 EXT(OES_texture_buffer),
794 EXT(OES_texture_cube_map_array),
795 EXT_AEP(OES_texture_storage_multisample_2d_array),
796 EXT(OES_viewport_array),
797
798 /* All other extensions go here, sorted alphabetically.
799 */
800 EXT(AMD_conservative_depth),
801 EXT(AMD_gpu_shader_half_float),
802 EXT(AMD_gpu_shader_int64),
803 EXT(AMD_shader_stencil_export),
804 EXT(AMD_shader_trinary_minmax),
805 EXT(AMD_texture_texture4),
806 EXT(AMD_vertex_shader_layer),
807 EXT(AMD_vertex_shader_viewport_index),
808 EXT(ANDROID_extension_pack_es31a),
809 EXT(ARM_shader_framebuffer_fetch_depth_stencil),
810 EXT(EXT_blend_func_extended),
811 EXT(EXT_demote_to_helper_invocation),
812 EXT(EXT_frag_depth),
813 EXT(EXT_draw_buffers),
814 EXT(EXT_draw_instanced),
815 EXT(EXT_clip_cull_distance),
816 EXT(EXT_conservative_depth),
817 EXT(EXT_geometry_point_size),
818 EXT_AEP(EXT_geometry_shader),
819 EXT(EXT_gpu_shader4),
820 EXT_AEP(EXT_gpu_shader5),
821 EXT_AEP(EXT_primitive_bounding_box),
822 EXT(EXT_separate_shader_objects),
823 EXT(EXT_shader_framebuffer_fetch),
824 EXT(EXT_shader_framebuffer_fetch_non_coherent),
825 EXT(EXT_shader_group_vote),
826 EXT(EXT_shader_image_load_formatted),
827 EXT(EXT_shader_image_load_store),
828 EXT(EXT_shader_implicit_conversions),
829 EXT(EXT_shader_integer_mix),
830 EXT_AEP(EXT_shader_io_blocks),
831 EXT(EXT_shader_samples_identical),
832 EXT(EXT_shadow_samplers),
833 EXT(EXT_tessellation_point_size),
834 EXT_AEP(EXT_tessellation_shader),
835 EXT(EXT_texture_array),
836 EXT_AEP(EXT_texture_buffer),
837 EXT_AEP(EXT_texture_cube_map_array),
838 EXT(EXT_texture_query_lod),
839 EXT(EXT_texture_shadow_lod),
840 EXT(INTEL_conservative_rasterization),
841 EXT(INTEL_shader_atomic_float_minmax),
842 EXT(INTEL_shader_integer_functions2),
843 EXT(MESA_shader_integer_functions),
844 EXT(NV_compute_shader_derivatives),
845 EXT(NV_fragment_shader_interlock),
846 EXT(NV_image_formats),
847 EXT(NV_shader_atomic_float),
848 EXT(NV_shader_atomic_int64),
849 EXT(NV_shader_noperspective_interpolation),
850 EXT(NV_viewport_array2),
851 EXT(OVR_multiview),
852 EXT(OVR_multiview2),
853 };
854
855 #undef EXT
856
857
858 /**
859 * Determine whether a given extension is compatible with the target,
860 * API, and extension information in the current parser state.
861 */
compatible_with_state(const _mesa_glsl_parse_state * state,gl_api api,uint8_t gl_version) const862 bool _mesa_glsl_extension::compatible_with_state(
863 const _mesa_glsl_parse_state *state, gl_api api, uint8_t gl_version) const
864 {
865 return this->available_pred(state, api, gl_version);
866 }
867
868 /**
869 * Set the appropriate flags in the parser state to establish the
870 * given behavior for this extension.
871 */
set_flags(_mesa_glsl_parse_state * state,ext_behavior behavior) const872 void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state *state,
873 ext_behavior behavior) const
874 {
875 /* Note: the ->* operator indexes into state by the
876 * offsets this->enable_flag and this->warn_flag. See
877 * _mesa_glsl_extension::supported_flag for more info.
878 */
879 state->*(this->enable_flag) = (behavior != extension_disable);
880 state->*(this->warn_flag) = (behavior == extension_warn);
881 }
882
883 /**
884 * Check alias_shader_extension for any aliased shader extensions
885 */
find_extension_alias(_mesa_glsl_parse_state * state,const char * name)886 static const char *find_extension_alias(_mesa_glsl_parse_state *state, const char *name)
887 {
888 char *exts, *field, *ext_alias = NULL;
889
890 /* Copy alias_shader_extension because strtok() is destructive. */
891 exts = strdup(state->alias_shader_extension);
892 if (exts) {
893 for (field = strtok(exts, ","); field != NULL; field = strtok(NULL, ",")) {
894 if(strncmp(name, field, strlen(name)) == 0) {
895 field = strstr(field, ":");
896 if(field) {
897 ext_alias = strdup(field + 1);
898 }
899 break;
900 }
901 }
902
903 free(exts);
904 }
905 return ext_alias;
906 }
907
908 /**
909 * Find an extension by name in _mesa_glsl_supported_extensions. If
910 * the name is not found, return NULL.
911 */
find_extension(_mesa_glsl_parse_state * state,const char * name)912 static const _mesa_glsl_extension *find_extension(_mesa_glsl_parse_state *state, const char *name)
913 {
914 const char *ext_alias = NULL;
915 if (state->alias_shader_extension) {
916 ext_alias = find_extension_alias(state, name);
917 name = ext_alias ? ext_alias : name;
918 }
919
920 for (unsigned i = 0; i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
921 if (strcmp(name, _mesa_glsl_supported_extensions[i].name) == 0) {
922 free((void *)ext_alias);
923 return &_mesa_glsl_supported_extensions[i];
924 }
925 }
926
927 free((void *)ext_alias);
928 return NULL;
929 }
930
931 bool
_mesa_glsl_process_extension(const char * name,YYLTYPE * name_locp,const char * behavior_string,YYLTYPE * behavior_locp,_mesa_glsl_parse_state * state)932 _mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
933 const char *behavior_string, YYLTYPE *behavior_locp,
934 _mesa_glsl_parse_state *state)
935 {
936 uint8_t gl_version = state->exts->Version;
937 gl_api api = state->api;
938 ext_behavior behavior;
939 if (strcmp(behavior_string, "warn") == 0) {
940 behavior = extension_warn;
941 } else if (strcmp(behavior_string, "require") == 0) {
942 behavior = extension_require;
943 } else if (strcmp(behavior_string, "enable") == 0) {
944 behavior = extension_enable;
945 } else if (strcmp(behavior_string, "disable") == 0) {
946 behavior = extension_disable;
947 } else {
948 _mesa_glsl_error(behavior_locp, state,
949 "unknown extension behavior `%s'",
950 behavior_string);
951 return false;
952 }
953
954 /* If we're in a desktop context but with an ES shader, use an ES API enum
955 * to verify extension availability.
956 */
957 if (state->es_shader && api != API_OPENGLES2)
958 api = API_OPENGLES2;
959 /* Use the language-version derived GL version to extension checks, unless
960 * we're using meta, which sets the version to the max.
961 */
962 if (gl_version != 0xff)
963 gl_version = state->gl_version;
964
965 if (strcmp(name, "all") == 0) {
966 if ((behavior == extension_enable) || (behavior == extension_require)) {
967 _mesa_glsl_error(name_locp, state, "cannot %s all extensions",
968 (behavior == extension_enable)
969 ? "enable" : "require");
970 return false;
971 } else {
972 for (unsigned i = 0;
973 i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
974 const _mesa_glsl_extension *extension
975 = &_mesa_glsl_supported_extensions[i];
976 if (extension->compatible_with_state(state, api, gl_version)) {
977 _mesa_glsl_supported_extensions[i].set_flags(state, behavior);
978 }
979 }
980 }
981 } else {
982 const _mesa_glsl_extension *extension = find_extension(state, name);
983 if (extension &&
984 (extension->compatible_with_state(state, api, gl_version) ||
985 (state->consts->AllowGLSLCompatShaders &&
986 extension->compatible_with_state(state, API_OPENGL_COMPAT, gl_version)))) {
987 extension->set_flags(state, behavior);
988 if (extension->available_pred == has_ANDROID_extension_pack_es31a) {
989 for (unsigned i = 0;
990 i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
991 const _mesa_glsl_extension *extension =
992 &_mesa_glsl_supported_extensions[i];
993
994 if (!extension->aep)
995 continue;
996 /* AEP should not be enabled if all of the sub-extensions can't
997 * also be enabled. This is not the proper layer to do such
998 * error-checking though.
999 */
1000 assert(extension->compatible_with_state(state, api, gl_version));
1001 extension->set_flags(state, behavior);
1002 }
1003 } else if (extension->available_pred == has_KHR_shader_subgroup_vote ||
1004 extension->available_pred == has_KHR_shader_subgroup_arithmetic ||
1005 extension->available_pred == has_KHR_shader_subgroup_ballot ||
1006 extension->available_pred == has_KHR_shader_subgroup_shuffle ||
1007 extension->available_pred == has_KHR_shader_subgroup_shuffle_relative ||
1008 extension->available_pred == has_KHR_shader_subgroup_clustered ||
1009 extension->available_pred == has_KHR_shader_subgroup_quad) {
1010 /* GLSL KHR_shader_subgroup spec says when any of above subgroup extension
1011 * is enabled, KHR_shader_subgroup_basic extension is also implicitly enabled.
1012 */
1013 for (unsigned i = 0; i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
1014 const _mesa_glsl_extension *extension = &_mesa_glsl_supported_extensions[i];
1015 if (extension->available_pred == has_KHR_shader_subgroup_basic) {
1016 assert(extension->compatible_with_state(state, api, gl_version));
1017 extension->set_flags(state, behavior);
1018 }
1019 }
1020 }
1021 } else {
1022 static const char fmt[] = "extension `%s' unsupported in %s shader";
1023
1024 if (behavior == extension_require) {
1025 _mesa_glsl_error(name_locp, state, fmt,
1026 name, _mesa_shader_stage_to_string(state->stage));
1027 return false;
1028 } else {
1029 _mesa_glsl_warning(name_locp, state, fmt,
1030 name, _mesa_shader_stage_to_string(state->stage));
1031 }
1032 }
1033 }
1034
1035 if (state->OVR_multiview2_enable)
1036 state->OVR_multiview_enable = true;
1037
1038 return true;
1039 }
1040
1041 /**
1042 * Recurses through <type> and <expr> if <expr> is an aggregate initializer
1043 * and sets <expr>'s <constructor_type> field to <type>. Gives later functions
1044 * (process_array_constructor, et al) sufficient information to do type
1045 * checking.
1046 *
1047 * Operates on assignments involving an aggregate initializer. E.g.,
1048 *
1049 * vec4 pos = {1.0, -1.0, 0.0, 1.0};
1050 *
1051 * or more ridiculously,
1052 *
1053 * struct S {
1054 * vec4 v[2];
1055 * };
1056 *
1057 * struct {
1058 * S a[2], b;
1059 * int c;
1060 * } aggregate = {
1061 * {
1062 * {
1063 * {
1064 * {1.0, 2.0, 3.0, 4.0}, // a[0].v[0]
1065 * {5.0, 6.0, 7.0, 8.0} // a[0].v[1]
1066 * } // a[0].v
1067 * }, // a[0]
1068 * {
1069 * {
1070 * {1.0, 2.0, 3.0, 4.0}, // a[1].v[0]
1071 * {5.0, 6.0, 7.0, 8.0} // a[1].v[1]
1072 * } // a[1].v
1073 * } // a[1]
1074 * }, // a
1075 * {
1076 * {
1077 * {1.0, 2.0, 3.0, 4.0}, // b.v[0]
1078 * {5.0, 6.0, 7.0, 8.0} // b.v[1]
1079 * } // b.v
1080 * }, // b
1081 * 4 // c
1082 * };
1083 *
1084 * This pass is necessary because the right-hand side of <type> e = { ... }
1085 * doesn't contain sufficient information to determine if the types match.
1086 */
1087 void
_mesa_ast_set_aggregate_type(const glsl_type * type,ast_expression * expr)1088 _mesa_ast_set_aggregate_type(const glsl_type *type,
1089 ast_expression *expr)
1090 {
1091 ast_aggregate_initializer *ai = (ast_aggregate_initializer *)expr;
1092 ai->constructor_type = type;
1093
1094 /* If the aggregate is an array, recursively set its elements' types. */
1095 if (glsl_type_is_array(type)) {
1096 /* Each array element has the type type->fields.array.
1097 *
1098 * E.g., if <type> if struct S[2] we want to set each element's type to
1099 * struct S.
1100 */
1101 for (exec_node *expr_node = ai->expressions.get_head_raw();
1102 !expr_node->is_tail_sentinel();
1103 expr_node = expr_node->next) {
1104 ast_expression *expr = exec_node_data(ast_expression, expr_node,
1105 link);
1106
1107 if (expr->oper == ast_aggregate)
1108 _mesa_ast_set_aggregate_type(type->fields.array, expr);
1109 }
1110
1111 /* If the aggregate is a struct, recursively set its fields' types. */
1112 } else if (glsl_type_is_struct(type)) {
1113 exec_node *expr_node = ai->expressions.get_head_raw();
1114
1115 /* Iterate through the struct's fields. */
1116 for (unsigned i = 0; !expr_node->is_tail_sentinel() && i < type->length;
1117 i++, expr_node = expr_node->next) {
1118 ast_expression *expr = exec_node_data(ast_expression, expr_node,
1119 link);
1120
1121 if (expr->oper == ast_aggregate) {
1122 _mesa_ast_set_aggregate_type(type->fields.structure[i].type, expr);
1123 }
1124 }
1125 /* If the aggregate is a matrix, set its columns' types. */
1126 } else if (glsl_type_is_matrix(type)) {
1127 for (exec_node *expr_node = ai->expressions.get_head_raw();
1128 !expr_node->is_tail_sentinel();
1129 expr_node = expr_node->next) {
1130 ast_expression *expr = exec_node_data(ast_expression, expr_node,
1131 link);
1132
1133 if (expr->oper == ast_aggregate)
1134 _mesa_ast_set_aggregate_type(glsl_get_column_type(type), expr);
1135 }
1136 }
1137 }
1138
1139 void
_mesa_ast_process_interface_block(YYLTYPE * locp,_mesa_glsl_parse_state * state,ast_interface_block * const block,const struct ast_type_qualifier & q)1140 _mesa_ast_process_interface_block(YYLTYPE *locp,
1141 _mesa_glsl_parse_state *state,
1142 ast_interface_block *const block,
1143 const struct ast_type_qualifier &q)
1144 {
1145 if (q.flags.q.buffer) {
1146 if (!state->has_shader_storage_buffer_objects()) {
1147 _mesa_glsl_error(locp, state,
1148 "#version 430 / GL_ARB_shader_storage_buffer_object "
1149 "required for defining shader storage blocks");
1150 } else if (state->ARB_shader_storage_buffer_object_warn) {
1151 _mesa_glsl_warning(locp, state,
1152 "#version 430 / GL_ARB_shader_storage_buffer_object "
1153 "required for defining shader storage blocks");
1154 }
1155 } else if (q.flags.q.uniform) {
1156 if (!state->has_uniform_buffer_objects()) {
1157 _mesa_glsl_error(locp, state,
1158 "#version 140 / GL_ARB_uniform_buffer_object "
1159 "required for defining uniform blocks");
1160 } else if (state->ARB_uniform_buffer_object_warn) {
1161 _mesa_glsl_warning(locp, state,
1162 "#version 140 / GL_ARB_uniform_buffer_object "
1163 "required for defining uniform blocks");
1164 }
1165 } else {
1166 if (!state->has_shader_io_blocks()) {
1167 if (state->es_shader) {
1168 _mesa_glsl_error(locp, state,
1169 "GL_OES_shader_io_blocks or #version 320 "
1170 "required for using interface blocks");
1171 } else {
1172 _mesa_glsl_error(locp, state,
1173 "#version 150 required for using "
1174 "interface blocks");
1175 }
1176 }
1177 }
1178
1179 /* From the GLSL 1.50.11 spec, section 4.3.7 ("Interface Blocks"):
1180 * "It is illegal to have an input block in a vertex shader
1181 * or an output block in a fragment shader"
1182 */
1183 if ((state->stage == MESA_SHADER_VERTEX) && q.flags.q.in) {
1184 _mesa_glsl_error(locp, state,
1185 "`in' interface block is not allowed for "
1186 "a vertex shader");
1187 } else if ((state->stage == MESA_SHADER_FRAGMENT) && q.flags.q.out) {
1188 _mesa_glsl_error(locp, state,
1189 "`out' interface block is not allowed for "
1190 "a fragment shader");
1191 }
1192
1193 /* Since block arrays require names, and both features are added in
1194 * the same language versions, we don't have to explicitly
1195 * version-check both things.
1196 */
1197 if (block->instance_name != NULL) {
1198 state->check_version(150, 300, locp, "interface blocks with "
1199 "an instance name are not allowed");
1200 }
1201
1202 ast_type_qualifier::bitset_t interface_type_mask;
1203 struct ast_type_qualifier temp_type_qualifier;
1204
1205 /* Get a bitmask containing only the in/out/uniform/buffer
1206 * flags, allowing us to ignore other irrelevant flags like
1207 * interpolation qualifiers.
1208 */
1209 temp_type_qualifier.flags.i = 0;
1210 temp_type_qualifier.flags.q.uniform = true;
1211 temp_type_qualifier.flags.q.in = true;
1212 temp_type_qualifier.flags.q.out = true;
1213 temp_type_qualifier.flags.q.buffer = true;
1214 temp_type_qualifier.flags.q.patch = true;
1215 interface_type_mask = temp_type_qualifier.flags.i;
1216
1217 /* Get the block's interface qualifier. The interface_qualifier
1218 * production rule guarantees that only one bit will be set (and
1219 * it will be in/out/uniform).
1220 */
1221 ast_type_qualifier::bitset_t block_interface_qualifier = q.flags.i;
1222
1223 block->default_layout.flags.i |= block_interface_qualifier;
1224
1225 if (state->stage == MESA_SHADER_GEOMETRY &&
1226 state->has_explicit_attrib_stream() &&
1227 block->default_layout.flags.q.out) {
1228 /* Assign global layout's stream value. */
1229 block->default_layout.flags.q.stream = 1;
1230 block->default_layout.flags.q.explicit_stream = 0;
1231 block->default_layout.stream = state->out_qualifier->stream;
1232 }
1233
1234 if (state->has_enhanced_layouts() && block->default_layout.flags.q.out &&
1235 state->exts->ARB_transform_feedback3) {
1236 /* Assign global layout's xfb_buffer value. */
1237 block->default_layout.flags.q.xfb_buffer = 1;
1238 block->default_layout.flags.q.explicit_xfb_buffer = 0;
1239 block->default_layout.xfb_buffer = state->out_qualifier->xfb_buffer;
1240 }
1241
1242 foreach_list_typed (ast_declarator_list, member, link, &block->declarations) {
1243 ast_type_qualifier& qualifier = member->type->qualifier;
1244 if ((qualifier.flags.i & interface_type_mask) == 0) {
1245 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1246 * "If no optional qualifier is used in a member declaration, the
1247 * qualifier of the variable is just in, out, or uniform as declared
1248 * by interface-qualifier."
1249 */
1250 qualifier.flags.i |= block_interface_qualifier;
1251 } else if ((qualifier.flags.i & interface_type_mask) !=
1252 block_interface_qualifier) {
1253 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1254 * "If optional qualifiers are used, they can include interpolation
1255 * and storage qualifiers and they must declare an input, output,
1256 * or uniform variable consistent with the interface qualifier of
1257 * the block."
1258 */
1259 _mesa_glsl_error(locp, state,
1260 "uniform/in/out qualifier on "
1261 "interface block member does not match "
1262 "the interface block");
1263 }
1264
1265 if (!(q.flags.q.in || q.flags.q.out) && qualifier.flags.q.invariant)
1266 _mesa_glsl_error(locp, state,
1267 "invariant qualifiers can be used only "
1268 "in interface block members for shader "
1269 "inputs or outputs");
1270 }
1271 }
1272
1273 static void
_mesa_ast_type_qualifier_print(const struct ast_type_qualifier * q)1274 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier *q)
1275 {
1276 if (q->is_subroutine_decl())
1277 printf("subroutine ");
1278
1279 if (q->subroutine_list) {
1280 printf("subroutine (");
1281 q->subroutine_list->print();
1282 printf(")");
1283 }
1284
1285 if (q->flags.q.constant)
1286 printf("const ");
1287
1288 if (q->flags.q.invariant)
1289 printf("invariant ");
1290
1291 if (q->flags.q.attribute)
1292 printf("attribute ");
1293
1294 if (q->flags.q.varying)
1295 printf("varying ");
1296
1297 if (q->flags.q.in && q->flags.q.out)
1298 printf("inout ");
1299 else {
1300 if (q->flags.q.in)
1301 printf("in ");
1302
1303 if (q->flags.q.out)
1304 printf("out ");
1305 }
1306
1307 if (q->flags.q.centroid)
1308 printf("centroid ");
1309 if (q->flags.q.sample)
1310 printf("sample ");
1311 if (q->flags.q.patch)
1312 printf("patch ");
1313 if (q->flags.q.uniform)
1314 printf("uniform ");
1315 if (q->flags.q.buffer)
1316 printf("buffer ");
1317 if (q->flags.q.smooth)
1318 printf("smooth ");
1319 if (q->flags.q.flat)
1320 printf("flat ");
1321 if (q->flags.q.noperspective)
1322 printf("noperspective ");
1323 }
1324
1325
1326 void
print(void) const1327 ast_node::print(void) const
1328 {
1329 printf("unhandled node ");
1330 }
1331
1332
ast_node(void)1333 ast_node::ast_node(void)
1334 {
1335 this->location.path = NULL;
1336 this->location.source = 0;
1337 this->location.first_line = 0;
1338 this->location.first_column = 0;
1339 this->location.last_line = 0;
1340 this->location.last_column = 0;
1341 }
1342
1343
1344 static void
ast_opt_array_dimensions_print(const ast_array_specifier * array_specifier)1345 ast_opt_array_dimensions_print(const ast_array_specifier *array_specifier)
1346 {
1347 if (array_specifier)
1348 array_specifier->print();
1349 }
1350
1351
1352 void
print(void) const1353 ast_compound_statement::print(void) const
1354 {
1355 printf("{\n");
1356
1357 foreach_list_typed(ast_node, ast, link, &this->statements) {
1358 ast->print();
1359 }
1360
1361 printf("}\n");
1362 }
1363
1364
ast_compound_statement(int new_scope,ast_node * statements)1365 ast_compound_statement::ast_compound_statement(int new_scope,
1366 ast_node *statements)
1367 {
1368 this->new_scope = new_scope;
1369
1370 if (statements != NULL) {
1371 this->statements.push_degenerate_list_at_head(&statements->link);
1372 }
1373 }
1374
1375
1376 void
print(void) const1377 ast_expression::print(void) const
1378 {
1379 switch (oper) {
1380 case ast_assign:
1381 case ast_mul_assign:
1382 case ast_div_assign:
1383 case ast_mod_assign:
1384 case ast_add_assign:
1385 case ast_sub_assign:
1386 case ast_ls_assign:
1387 case ast_rs_assign:
1388 case ast_and_assign:
1389 case ast_xor_assign:
1390 case ast_or_assign:
1391 subexpressions[0]->print();
1392 printf("%s ", operator_string(oper));
1393 subexpressions[1]->print();
1394 break;
1395
1396 case ast_field_selection:
1397 subexpressions[0]->print();
1398 printf(". %s ", primary_expression.identifier);
1399 break;
1400
1401 case ast_plus:
1402 case ast_neg:
1403 case ast_bit_not:
1404 case ast_logic_not:
1405 case ast_pre_inc:
1406 case ast_pre_dec:
1407 printf("%s ", operator_string(oper));
1408 subexpressions[0]->print();
1409 break;
1410
1411 case ast_post_inc:
1412 case ast_post_dec:
1413 subexpressions[0]->print();
1414 printf("%s ", operator_string(oper));
1415 break;
1416
1417 case ast_conditional:
1418 subexpressions[0]->print();
1419 printf("? ");
1420 subexpressions[1]->print();
1421 printf(": ");
1422 subexpressions[2]->print();
1423 break;
1424
1425 case ast_array_index:
1426 subexpressions[0]->print();
1427 printf("[ ");
1428 subexpressions[1]->print();
1429 printf("] ");
1430 break;
1431
1432 case ast_function_call: {
1433 subexpressions[0]->print();
1434 printf("( ");
1435
1436 foreach_list_typed (ast_node, ast, link, &this->expressions) {
1437 if (&ast->link != this->expressions.get_head())
1438 printf(", ");
1439
1440 ast->print();
1441 }
1442
1443 printf(") ");
1444 break;
1445 }
1446
1447 case ast_identifier:
1448 printf("%s ", primary_expression.identifier);
1449 break;
1450
1451 case ast_int_constant:
1452 printf("%d ", primary_expression.int_constant);
1453 break;
1454
1455 case ast_uint_constant:
1456 printf("%u ", primary_expression.uint_constant);
1457 break;
1458
1459 case ast_float_constant:
1460 printf("%f ", primary_expression.float_constant);
1461 break;
1462
1463 case ast_double_constant:
1464 printf("%f ", primary_expression.double_constant);
1465 break;
1466
1467 case ast_int64_constant:
1468 printf("%" PRId64 " ", primary_expression.int64_constant);
1469 break;
1470
1471 case ast_uint64_constant:
1472 printf("%" PRIu64 " ", primary_expression.uint64_constant);
1473 break;
1474
1475 case ast_bool_constant:
1476 printf("%s ",
1477 primary_expression.bool_constant
1478 ? "true" : "false");
1479 break;
1480
1481 case ast_sequence: {
1482 printf("( ");
1483 foreach_list_typed (ast_node, ast, link, & this->expressions) {
1484 if (&ast->link != this->expressions.get_head())
1485 printf(", ");
1486
1487 ast->print();
1488 }
1489 printf(") ");
1490 break;
1491 }
1492
1493 case ast_aggregate: {
1494 printf("{ ");
1495 foreach_list_typed (ast_node, ast, link, & this->expressions) {
1496 if (&ast->link != this->expressions.get_head())
1497 printf(", ");
1498
1499 ast->print();
1500 }
1501 printf("} ");
1502 break;
1503 }
1504
1505 default:
1506 assert(0);
1507 break;
1508 }
1509 }
1510
ast_expression(int oper,ast_expression * ex0,ast_expression * ex1,ast_expression * ex2)1511 ast_expression::ast_expression(int oper,
1512 ast_expression *ex0,
1513 ast_expression *ex1,
1514 ast_expression *ex2) :
1515 primary_expression()
1516 {
1517 this->oper = ast_operators(oper);
1518 this->subexpressions[0] = ex0;
1519 this->subexpressions[1] = ex1;
1520 this->subexpressions[2] = ex2;
1521 this->non_lvalue_description = NULL;
1522 this->is_lhs = false;
1523 }
1524
1525
1526 void
print(void) const1527 ast_expression_statement::print(void) const
1528 {
1529 if (expression)
1530 expression->print();
1531
1532 printf("; ");
1533 }
1534
1535
ast_expression_statement(ast_expression * ex)1536 ast_expression_statement::ast_expression_statement(ast_expression *ex) :
1537 expression(ex)
1538 {
1539 /* empty */
1540 }
1541
1542
1543 void
print(void) const1544 ast_function::print(void) const
1545 {
1546 return_type->print();
1547 printf(" %s (", identifier);
1548
1549 foreach_list_typed(ast_node, ast, link, & this->parameters) {
1550 ast->print();
1551 }
1552
1553 printf(")");
1554 }
1555
1556
ast_function(void)1557 ast_function::ast_function(void)
1558 : return_type(NULL), identifier(NULL), is_definition(false),
1559 signature(NULL)
1560 {
1561 /* empty */
1562 }
1563
1564
1565 void
print(void) const1566 ast_fully_specified_type::print(void) const
1567 {
1568 _mesa_ast_type_qualifier_print(& qualifier);
1569 specifier->print();
1570 }
1571
1572
1573 void
print(void) const1574 ast_parameter_declarator::print(void) const
1575 {
1576 type->print();
1577 if (identifier)
1578 printf("%s ", identifier);
1579 ast_opt_array_dimensions_print(array_specifier);
1580 }
1581
1582
1583 void
print(void) const1584 ast_function_definition::print(void) const
1585 {
1586 prototype->print();
1587 body->print();
1588 }
1589
1590
1591 void
print(void) const1592 ast_declaration::print(void) const
1593 {
1594 printf("%s ", identifier);
1595 ast_opt_array_dimensions_print(array_specifier);
1596
1597 if (initializer) {
1598 printf("= ");
1599 initializer->print();
1600 }
1601 }
1602
1603
ast_declaration(const char * identifier,ast_array_specifier * array_specifier,ast_expression * initializer)1604 ast_declaration::ast_declaration(const char *identifier,
1605 ast_array_specifier *array_specifier,
1606 ast_expression *initializer)
1607 {
1608 this->identifier = identifier;
1609 this->array_specifier = array_specifier;
1610 this->initializer = initializer;
1611 }
1612
1613
1614 void
print(void) const1615 ast_declarator_list::print(void) const
1616 {
1617 assert(type || invariant);
1618
1619 if (type)
1620 type->print();
1621 else if (invariant)
1622 printf("invariant ");
1623 else
1624 printf("precise ");
1625
1626 foreach_list_typed (ast_node, ast, link, & this->declarations) {
1627 if (&ast->link != this->declarations.get_head())
1628 printf(", ");
1629
1630 ast->print();
1631 }
1632
1633 printf("; ");
1634 }
1635
1636
ast_declarator_list(ast_fully_specified_type * type)1637 ast_declarator_list::ast_declarator_list(ast_fully_specified_type *type)
1638 {
1639 this->type = type;
1640 this->invariant = false;
1641 this->precise = false;
1642 }
1643
1644 void
print(void) const1645 ast_jump_statement::print(void) const
1646 {
1647 switch (mode) {
1648 case ast_continue:
1649 printf("continue; ");
1650 break;
1651 case ast_break:
1652 printf("break; ");
1653 break;
1654 case ast_return:
1655 printf("return ");
1656 if (opt_return_value)
1657 opt_return_value->print();
1658
1659 printf("; ");
1660 break;
1661 case ast_discard:
1662 printf("discard; ");
1663 break;
1664 }
1665 }
1666
1667
ast_jump_statement(int mode,ast_expression * return_value)1668 ast_jump_statement::ast_jump_statement(int mode, ast_expression *return_value)
1669 : opt_return_value(NULL)
1670 {
1671 this->mode = ast_jump_modes(mode);
1672
1673 if (mode == ast_return)
1674 opt_return_value = return_value;
1675 }
1676
1677
1678 void
print(void) const1679 ast_demote_statement::print(void) const
1680 {
1681 printf("demote; ");
1682 }
1683
1684
1685 void
print(void) const1686 ast_selection_statement::print(void) const
1687 {
1688 printf("if ( ");
1689 condition->print();
1690 printf(") ");
1691
1692 then_statement->print();
1693
1694 if (else_statement) {
1695 printf("else ");
1696 else_statement->print();
1697 }
1698 }
1699
1700
ast_selection_statement(ast_expression * condition,ast_node * then_statement,ast_node * else_statement)1701 ast_selection_statement::ast_selection_statement(ast_expression *condition,
1702 ast_node *then_statement,
1703 ast_node *else_statement)
1704 {
1705 this->condition = condition;
1706 this->then_statement = then_statement;
1707 this->else_statement = else_statement;
1708 }
1709
1710
1711 void
print(void) const1712 ast_switch_statement::print(void) const
1713 {
1714 printf("switch ( ");
1715 test_expression->print();
1716 printf(") ");
1717
1718 body->print();
1719 }
1720
1721
ast_switch_statement(ast_expression * test_expression,ast_node * body)1722 ast_switch_statement::ast_switch_statement(ast_expression *test_expression,
1723 ast_node *body)
1724 {
1725 this->test_expression = test_expression;
1726 this->body = body;
1727 this->test_val = NULL;
1728 }
1729
1730
1731 void
print(void) const1732 ast_switch_body::print(void) const
1733 {
1734 printf("{\n");
1735 if (stmts != NULL) {
1736 stmts->print();
1737 }
1738 printf("}\n");
1739 }
1740
1741
ast_switch_body(ast_case_statement_list * stmts)1742 ast_switch_body::ast_switch_body(ast_case_statement_list *stmts)
1743 {
1744 this->stmts = stmts;
1745 }
1746
1747
print(void) const1748 void ast_case_label::print(void) const
1749 {
1750 if (test_value != NULL) {
1751 printf("case ");
1752 test_value->print();
1753 printf(": ");
1754 } else {
1755 printf("default: ");
1756 }
1757 }
1758
1759
ast_case_label(ast_expression * test_value)1760 ast_case_label::ast_case_label(ast_expression *test_value)
1761 {
1762 this->test_value = test_value;
1763 }
1764
1765
print(void) const1766 void ast_case_label_list::print(void) const
1767 {
1768 foreach_list_typed(ast_node, ast, link, & this->labels) {
1769 ast->print();
1770 }
1771 printf("\n");
1772 }
1773
1774
ast_case_label_list(void)1775 ast_case_label_list::ast_case_label_list(void)
1776 {
1777 }
1778
1779
print(void) const1780 void ast_case_statement::print(void) const
1781 {
1782 labels->print();
1783 foreach_list_typed(ast_node, ast, link, & this->stmts) {
1784 ast->print();
1785 printf("\n");
1786 }
1787 }
1788
1789
ast_case_statement(ast_case_label_list * labels)1790 ast_case_statement::ast_case_statement(ast_case_label_list *labels)
1791 {
1792 this->labels = labels;
1793 }
1794
1795
print(void) const1796 void ast_case_statement_list::print(void) const
1797 {
1798 foreach_list_typed(ast_node, ast, link, & this->cases) {
1799 ast->print();
1800 }
1801 }
1802
1803
ast_case_statement_list(void)1804 ast_case_statement_list::ast_case_statement_list(void)
1805 {
1806 }
1807
1808
1809 void
print(void) const1810 ast_iteration_statement::print(void) const
1811 {
1812 switch (mode) {
1813 case ast_for:
1814 printf("for( ");
1815 if (init_statement)
1816 init_statement->print();
1817 printf("; ");
1818
1819 if (condition)
1820 condition->print();
1821 printf("; ");
1822
1823 if (rest_expression)
1824 rest_expression->print();
1825 printf(") ");
1826
1827 body->print();
1828 break;
1829
1830 case ast_while:
1831 printf("while ( ");
1832 if (condition)
1833 condition->print();
1834 printf(") ");
1835 body->print();
1836 break;
1837
1838 case ast_do_while:
1839 printf("do ");
1840 body->print();
1841 printf("while ( ");
1842 if (condition)
1843 condition->print();
1844 printf("); ");
1845 break;
1846 }
1847 }
1848
1849
ast_iteration_statement(int mode,ast_node * init,ast_node * condition,ast_expression * rest_expression,ast_node * body)1850 ast_iteration_statement::ast_iteration_statement(int mode,
1851 ast_node *init,
1852 ast_node *condition,
1853 ast_expression *rest_expression,
1854 ast_node *body)
1855 {
1856 this->mode = ast_iteration_modes(mode);
1857 this->init_statement = init;
1858 this->condition = condition;
1859 this->rest_expression = rest_expression;
1860 this->body = body;
1861 }
1862
1863
1864 void
print(void) const1865 ast_struct_specifier::print(void) const
1866 {
1867 printf("struct %s { ", name);
1868 foreach_list_typed(ast_node, ast, link, &this->declarations) {
1869 ast->print();
1870 }
1871 printf("} ");
1872 }
1873
1874
ast_struct_specifier(const char * identifier,ast_declarator_list * declarator_list)1875 ast_struct_specifier::ast_struct_specifier(const char *identifier,
1876 ast_declarator_list *declarator_list)
1877 : name(identifier), layout(NULL), declarations(), is_declaration(true),
1878 type(NULL)
1879 {
1880 this->declarations.push_degenerate_list_at_head(&declarator_list->link);
1881 }
1882
print(void) const1883 void ast_subroutine_list::print(void) const
1884 {
1885 foreach_list_typed (ast_node, ast, link, & this->declarations) {
1886 if (&ast->link != this->declarations.get_head())
1887 printf(", ");
1888 ast->print();
1889 }
1890 }
1891
1892 static void
set_shader_inout_layout(struct gl_shader * shader,struct _mesa_glsl_parse_state * state)1893 set_shader_inout_layout(struct gl_shader *shader,
1894 struct _mesa_glsl_parse_state *state)
1895 {
1896 /* Should have been prevented by the parser. */
1897 if (shader->Stage != MESA_SHADER_GEOMETRY &&
1898 shader->Stage != MESA_SHADER_TESS_EVAL &&
1899 shader->Stage != MESA_SHADER_COMPUTE) {
1900 assert(!state->in_qualifier->flags.i);
1901 }
1902
1903 if (shader->Stage != MESA_SHADER_COMPUTE) {
1904 /* Should have been prevented by the parser. */
1905 assert(!state->cs_input_local_size_specified);
1906 assert(!state->cs_input_local_size_variable_specified);
1907 assert(state->cs_derivative_group == DERIVATIVE_GROUP_NONE);
1908 }
1909
1910 if (shader->Stage != MESA_SHADER_FRAGMENT) {
1911 /* Should have been prevented by the parser. */
1912 assert(!state->fs_uses_gl_fragcoord);
1913 assert(!state->fs_redeclares_gl_fragcoord);
1914 assert(!state->fs_pixel_center_integer);
1915 assert(!state->fs_origin_upper_left);
1916 assert(!state->fs_early_fragment_tests);
1917 assert(!state->fs_inner_coverage);
1918 assert(!state->fs_post_depth_coverage);
1919 assert(!state->fs_pixel_interlock_ordered);
1920 assert(!state->fs_pixel_interlock_unordered);
1921 assert(!state->fs_sample_interlock_ordered);
1922 assert(!state->fs_sample_interlock_unordered);
1923 }
1924
1925 for (unsigned i = 0; i < MAX_FEEDBACK_BUFFERS; i++) {
1926 if (state->out_qualifier->out_xfb_stride[i]) {
1927 unsigned xfb_stride;
1928 if (state->out_qualifier->out_xfb_stride[i]->
1929 process_qualifier_constant(state, "xfb_stride", &xfb_stride,
1930 true)) {
1931 shader->TransformFeedbackBufferStride[i] = xfb_stride;
1932 }
1933 }
1934 }
1935
1936 switch (shader->Stage) {
1937 case MESA_SHADER_TESS_CTRL:
1938 shader->info.TessCtrl.VerticesOut = 0;
1939 if (state->tcs_output_vertices_specified) {
1940 unsigned vertices;
1941 if (state->out_qualifier->vertices->
1942 process_qualifier_constant(state, "vertices", &vertices,
1943 false)) {
1944
1945 YYLTYPE loc = state->out_qualifier->vertices->get_location();
1946 if (vertices > state->Const.MaxPatchVertices) {
1947 _mesa_glsl_error(&loc, state, "vertices (%d) exceeds "
1948 "GL_MAX_PATCH_VERTICES", vertices);
1949 }
1950 shader->info.TessCtrl.VerticesOut = vertices;
1951 }
1952 }
1953 break;
1954 case MESA_SHADER_TESS_EVAL:
1955 shader->info.TessEval._PrimitiveMode = TESS_PRIMITIVE_UNSPECIFIED;
1956 if (state->in_qualifier->flags.q.prim_type) {
1957 switch (state->in_qualifier->prim_type) {
1958 case GL_TRIANGLES:
1959 shader->info.TessEval._PrimitiveMode = TESS_PRIMITIVE_TRIANGLES;
1960 break;
1961 case GL_QUADS:
1962 shader->info.TessEval._PrimitiveMode = TESS_PRIMITIVE_QUADS;
1963 break;
1964 case GL_ISOLINES:
1965 shader->info.TessEval._PrimitiveMode = TESS_PRIMITIVE_ISOLINES;
1966 break;
1967 }
1968 }
1969
1970 shader->info.TessEval.Spacing = TESS_SPACING_UNSPECIFIED;
1971 if (state->in_qualifier->flags.q.vertex_spacing)
1972 shader->info.TessEval.Spacing = state->in_qualifier->vertex_spacing;
1973
1974 shader->info.TessEval.VertexOrder = 0;
1975 if (state->in_qualifier->flags.q.ordering)
1976 shader->info.TessEval.VertexOrder = state->in_qualifier->ordering;
1977
1978 shader->info.TessEval.PointMode = -1;
1979 if (state->in_qualifier->flags.q.point_mode)
1980 shader->info.TessEval.PointMode = state->in_qualifier->point_mode;
1981 break;
1982 case MESA_SHADER_GEOMETRY:
1983 shader->info.Geom.VerticesOut = -1;
1984 if (state->out_qualifier->flags.q.max_vertices) {
1985 unsigned qual_max_vertices;
1986 if (state->out_qualifier->max_vertices->
1987 process_qualifier_constant(state, "max_vertices",
1988 &qual_max_vertices, true)) {
1989
1990 if (qual_max_vertices > state->Const.MaxGeometryOutputVertices) {
1991 YYLTYPE loc = state->out_qualifier->max_vertices->get_location();
1992 _mesa_glsl_error(&loc, state,
1993 "maximum output vertices (%d) exceeds "
1994 "GL_MAX_GEOMETRY_OUTPUT_VERTICES",
1995 qual_max_vertices);
1996 }
1997 shader->info.Geom.VerticesOut = qual_max_vertices;
1998 }
1999 }
2000
2001 if (state->gs_input_prim_type_specified) {
2002 shader->info.Geom.InputType =
2003 gl_to_mesa_prim(state->in_qualifier->prim_type);
2004 } else {
2005 shader->info.Geom.InputType = MESA_PRIM_UNKNOWN;
2006 }
2007
2008 if (state->out_qualifier->flags.q.prim_type) {
2009 shader->info.Geom.OutputType =
2010 gl_to_mesa_prim(state->out_qualifier->prim_type);
2011 } else {
2012 shader->info.Geom.OutputType = MESA_PRIM_UNKNOWN;
2013 }
2014
2015 shader->info.Geom.Invocations = 0;
2016 if (state->in_qualifier->flags.q.invocations) {
2017 unsigned invocations;
2018 if (state->in_qualifier->invocations->
2019 process_qualifier_constant(state, "invocations",
2020 &invocations, false)) {
2021
2022 YYLTYPE loc = state->in_qualifier->invocations->get_location();
2023 if (invocations > state->Const.MaxGeometryShaderInvocations) {
2024 _mesa_glsl_error(&loc, state,
2025 "invocations (%d) exceeds "
2026 "GL_MAX_GEOMETRY_SHADER_INVOCATIONS",
2027 invocations);
2028 }
2029 shader->info.Geom.Invocations = invocations;
2030 }
2031 }
2032 break;
2033
2034 case MESA_SHADER_COMPUTE:
2035 if (state->cs_input_local_size_specified) {
2036 for (int i = 0; i < 3; i++)
2037 shader->info.Comp.LocalSize[i] = state->cs_input_local_size[i];
2038 } else {
2039 for (int i = 0; i < 3; i++)
2040 shader->info.Comp.LocalSize[i] = 0;
2041 }
2042
2043 shader->info.Comp.LocalSizeVariable =
2044 state->cs_input_local_size_variable_specified;
2045
2046 shader->info.Comp.DerivativeGroup = state->cs_derivative_group;
2047
2048 if (state->NV_compute_shader_derivatives_enable) {
2049 /* We allow multiple cs_input_layout nodes, but do not store them in
2050 * a convenient place, so for now live with an empty location error.
2051 */
2052 YYLTYPE loc = {0};
2053 if (shader->info.Comp.DerivativeGroup == DERIVATIVE_GROUP_QUADS) {
2054 if (shader->info.Comp.LocalSize[0] % 2 != 0) {
2055 _mesa_glsl_error(&loc, state, "derivative_group_quadsNV must be used with a "
2056 "local group size whose first dimension "
2057 "is a multiple of 2\n");
2058 }
2059 if (shader->info.Comp.LocalSize[1] % 2 != 0) {
2060 _mesa_glsl_error(&loc, state, "derivative_group_quadsNV must be used with a "
2061 "local group size whose second dimension "
2062 "is a multiple of 2\n");
2063 }
2064 } else if (shader->info.Comp.DerivativeGroup == DERIVATIVE_GROUP_LINEAR) {
2065 if ((shader->info.Comp.LocalSize[0] *
2066 shader->info.Comp.LocalSize[1] *
2067 shader->info.Comp.LocalSize[2]) % 4 != 0) {
2068 _mesa_glsl_error(&loc, state, "derivative_group_linearNV must be used with a "
2069 "local group size whose total number of invocations "
2070 "is a multiple of 4\n");
2071 }
2072 }
2073 }
2074
2075 break;
2076
2077 case MESA_SHADER_FRAGMENT:
2078 shader->redeclares_gl_fragcoord = state->fs_redeclares_gl_fragcoord;
2079 shader->uses_gl_fragcoord = state->fs_uses_gl_fragcoord;
2080 shader->pixel_center_integer = state->fs_pixel_center_integer;
2081 shader->origin_upper_left = state->fs_origin_upper_left;
2082 shader->ARB_fragment_coord_conventions_enable =
2083 state->ARB_fragment_coord_conventions_enable;
2084 shader->EarlyFragmentTests = state->fs_early_fragment_tests;
2085 shader->InnerCoverage = state->fs_inner_coverage;
2086 shader->PostDepthCoverage = state->fs_post_depth_coverage;
2087 shader->PixelInterlockOrdered = state->fs_pixel_interlock_ordered;
2088 shader->PixelInterlockUnordered = state->fs_pixel_interlock_unordered;
2089 shader->SampleInterlockOrdered = state->fs_sample_interlock_ordered;
2090 shader->SampleInterlockUnordered = state->fs_sample_interlock_unordered;
2091 shader->BlendSupport = state->fs_blend_support;
2092 break;
2093
2094 default:
2095 /* Nothing to do. */
2096 break;
2097 }
2098
2099 shader->view_mask = state->view_mask;
2100 shader->bindless_sampler = state->bindless_sampler_specified;
2101 shader->bindless_image = state->bindless_image_specified;
2102 shader->bound_sampler = state->bound_sampler_specified;
2103 shader->bound_image = state->bound_image_specified;
2104 shader->redeclares_gl_layer = state->redeclares_gl_layer;
2105 shader->layer_viewport_relative = state->layer_viewport_relative;
2106 }
2107
2108 extern "C" {
2109
2110 static void
assign_subroutine_indexes(struct _mesa_glsl_parse_state * state)2111 assign_subroutine_indexes(struct _mesa_glsl_parse_state *state)
2112 {
2113 int j, k;
2114 int index = 0;
2115
2116 for (j = 0; j < state->num_subroutines; j++) {
2117 while (state->subroutines[j]->subroutine_index == -1) {
2118 for (k = 0; k < state->num_subroutines; k++) {
2119 if (state->subroutines[k]->subroutine_index == index)
2120 break;
2121 else if (k == state->num_subroutines - 1) {
2122 state->subroutines[j]->subroutine_index = index;
2123 }
2124 }
2125 index++;
2126 }
2127 }
2128 }
2129
2130 static void
add_builtin_defines(struct _mesa_glsl_parse_state * state,void (* add_builtin_define)(struct glcpp_parser *,const char *,int),struct glcpp_parser * data,unsigned version,bool es)2131 add_builtin_defines(struct _mesa_glsl_parse_state *state,
2132 void (*add_builtin_define)(struct glcpp_parser *, const char *, int),
2133 struct glcpp_parser *data,
2134 unsigned version,
2135 bool es)
2136 {
2137 unsigned gl_version = state->exts->Version;
2138 gl_api api = state->api;
2139
2140 if (gl_version != 0xff) {
2141 unsigned i;
2142 for (i = 0; i < state->num_supported_versions; i++) {
2143 if (state->supported_versions[i].ver == version &&
2144 state->supported_versions[i].es == es) {
2145 gl_version = state->supported_versions[i].gl_ver;
2146 break;
2147 }
2148 }
2149
2150 if (i == state->num_supported_versions)
2151 return;
2152 }
2153
2154 if (es)
2155 api = API_OPENGLES2;
2156
2157 for (unsigned i = 0;
2158 i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
2159 const _mesa_glsl_extension *extension
2160 = &_mesa_glsl_supported_extensions[i];
2161 if (extension->compatible_with_state(state, api, gl_version)) {
2162 add_builtin_define(data, extension->name, 1);
2163 }
2164 }
2165 }
2166
2167 /* Implements parsing checks that we can't do during parsing */
2168 static void
do_late_parsing_checks(struct _mesa_glsl_parse_state * state)2169 do_late_parsing_checks(struct _mesa_glsl_parse_state *state)
2170 {
2171 if (state->stage == MESA_SHADER_COMPUTE && !state->has_compute_shader()) {
2172 YYLTYPE loc;
2173 memset(&loc, 0, sizeof(loc));
2174 _mesa_glsl_error(&loc, state, "Compute shaders require "
2175 "GLSL 4.30 or GLSL ES 3.10");
2176 }
2177 }
2178
2179 static void
opt_shader(const struct gl_constants * consts,const struct gl_extensions * exts,struct gl_shader * shader)2180 opt_shader(const struct gl_constants *consts,
2181 const struct gl_extensions *exts,
2182 struct gl_shader *shader)
2183 {
2184 assert(shader->CompileStatus != COMPILE_FAILURE &&
2185 !shader->ir->is_empty());
2186
2187 const struct gl_shader_compiler_options *options =
2188 &consts->ShaderCompilerOptions[shader->Stage];
2189
2190 /* Do some optimization at compile time to reduce shader IR size
2191 * and reduce later work if the same shader is linked multiple times.
2192 *
2193 * Run it just once, since NIR will do the real optimization.
2194 */
2195 do_common_optimization(shader->ir, false, options, consts->NativeIntegers);
2196
2197 validate_ir_tree(shader->ir);
2198
2199 enum ir_variable_mode other;
2200 switch (shader->Stage) {
2201 case MESA_SHADER_VERTEX:
2202 other = ir_var_shader_in;
2203 break;
2204 case MESA_SHADER_FRAGMENT:
2205 other = ir_var_shader_out;
2206 break;
2207 default:
2208 /* Something invalid to ensure optimize_dead_builtin_uniforms
2209 * doesn't remove anything other than uniforms or constants.
2210 */
2211 other = ir_var_mode_count;
2212 break;
2213 }
2214
2215 optimize_dead_builtin_variables(shader->ir, other);
2216
2217 lower_vector_derefs(shader);
2218
2219 lower_packing_builtins(shader->ir, exts->ARB_shading_language_packing,
2220 exts->ARB_gpu_shader5,
2221 consts->GLSLHasHalfFloatPacking);
2222 do_mat_op_to_vec(shader->ir);
2223
2224 lower_instructions(shader->ir, consts->ForceGLSLAbsSqrt,
2225 exts->ARB_gpu_shader5);
2226
2227 do_vec_index_to_cond_assign(shader->ir);
2228
2229 validate_ir_tree(shader->ir);
2230
2231 /* Retain any live IR, but trash the rest. */
2232 reparent_ir(shader->ir, shader->ir);
2233 }
2234
2235 static bool
can_skip_compile(struct gl_context * ctx,struct gl_shader * shader,const char * source,const blake3_hash source_blake3,bool force_recompile,bool source_has_shader_include)2236 can_skip_compile(struct gl_context *ctx, struct gl_shader *shader,
2237 const char *source, const blake3_hash source_blake3,
2238 bool force_recompile, bool source_has_shader_include)
2239 {
2240 if (!force_recompile) {
2241 if (ctx->Cache) {
2242 char buf[41];
2243 disk_cache_compute_key(ctx->Cache, source, strlen(source),
2244 shader->disk_cache_sha1);
2245 if (disk_cache_has_key(ctx->Cache, shader->disk_cache_sha1)) {
2246 /* We've seen this shader before and know it compiles */
2247 if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
2248 _mesa_sha1_format(buf, shader->disk_cache_sha1);
2249 fprintf(stderr, "deferring compile of shader: %s\n", buf);
2250 }
2251 shader->CompileStatus = COMPILE_SKIPPED;
2252
2253 free((void *)shader->FallbackSource);
2254
2255 /* Copy pre-processed shader include to fallback source otherwise
2256 * we have no guarantee the shader include source tree has not
2257 * changed.
2258 */
2259 if (source_has_shader_include) {
2260 shader->FallbackSource = strdup(source);
2261 memcpy(shader->fallback_source_blake3, source_blake3,
2262 BLAKE3_OUT_LEN);
2263 } else {
2264 shader->FallbackSource = NULL;
2265 }
2266 memcpy(shader->compiled_source_blake3, source_blake3,
2267 BLAKE3_OUT_LEN);
2268 return true;
2269 }
2270 }
2271 } else {
2272 /* We should only ever end up here if a re-compile has been forced by a
2273 * shader cache miss. In which case we can skip the compile if its
2274 * already been done by a previous fallback or the initial compile call.
2275 */
2276 if (shader->CompileStatus == COMPILE_SUCCESS)
2277 return true;
2278 }
2279
2280 return false;
2281 }
2282
2283 static void
log_compile_skip(struct gl_context * ctx,struct gl_shader * shader)2284 log_compile_skip(struct gl_context *ctx, struct gl_shader *shader)
2285 {
2286 if (ctx->_Shader->Flags & GLSL_DUMP) {
2287 _mesa_log("No GLSL IR for shader %d (shader may be from cache)\n",
2288 shader->Name);
2289 }
2290 }
2291
2292 void
_mesa_glsl_compile_shader(struct gl_context * ctx,struct gl_shader * shader,FILE * dump_ir_file,bool dump_ast,bool dump_hir,bool force_recompile)2293 _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
2294 FILE *dump_ir_file, bool dump_ast, bool dump_hir,
2295 bool force_recompile)
2296 {
2297 const char *source;
2298 const uint8_t *source_blake3;
2299
2300 if (force_recompile && shader->FallbackSource) {
2301 source = shader->FallbackSource;
2302 source_blake3 = shader->fallback_source_blake3;
2303 } else {
2304 source = shader->Source;
2305 source_blake3 = shader->source_blake3;
2306 }
2307
2308 /* Note this will be true for shaders the have #include inside comments
2309 * however that should be rare enough not to worry about.
2310 */
2311 bool source_has_shader_include =
2312 strstr(source, "#include") == NULL ? false : true;
2313
2314 /* If there was no shader include we can check the shader cache and skip
2315 * compilation before we run the preprocessor. We never skip compiling
2316 * shaders that use ARB_shading_language_include because we would need to
2317 * keep duplicate copies of the shader include source tree and paths.
2318 */
2319 if (!source_has_shader_include &&
2320 can_skip_compile(ctx, shader, source, source_blake3, force_recompile,
2321 false)) {
2322 log_compile_skip(ctx, shader);
2323 return;
2324 }
2325
2326 struct _mesa_glsl_parse_state *state =
2327 new(shader) _mesa_glsl_parse_state(ctx, shader->Stage, shader);
2328
2329 if (ctx->Const.GenerateTemporaryNames)
2330 (void) p_atomic_cmpxchg(&ir_variable::temporaries_allocate_names,
2331 false, true);
2332
2333 if (!source_has_shader_include || !force_recompile) {
2334 state->error = glcpp_preprocess(state, &source, &state->info_log,
2335 add_builtin_defines, state, ctx);
2336 }
2337
2338 /* Now that we have run the preprocessor we can check the shader cache and
2339 * skip compilation if possible for those shaders that contained a shader
2340 * include.
2341 */
2342 if (source_has_shader_include &&
2343 can_skip_compile(ctx, shader, source, source_blake3, force_recompile,
2344 true)) {
2345 log_compile_skip(ctx, shader);
2346 return;
2347 }
2348
2349 if (!state->error) {
2350 _mesa_glsl_lexer_ctor(state, source);
2351 _mesa_glsl_parse(state);
2352 _mesa_glsl_lexer_dtor(state);
2353 do_late_parsing_checks(state);
2354 }
2355
2356 if (dump_ast) {
2357 foreach_list_typed(ast_node, ast, link, &state->translation_unit) {
2358 ast->print();
2359 }
2360 printf("\n\n");
2361 }
2362
2363 ralloc_free(shader->ir);
2364 ralloc_free(shader->nir);
2365 shader->nir = NULL;
2366 shader->ir = new(shader) exec_list;
2367 if (!state->error && !state->translation_unit.is_empty())
2368 _mesa_ast_to_hir(shader->ir, state);
2369
2370 if (!state->error) {
2371 validate_ir_tree(shader->ir);
2372
2373 /* Print out the unoptimized IR. */
2374 if (dump_hir) {
2375 _mesa_print_ir(stdout, shader->ir, state);
2376 }
2377 }
2378
2379 if (shader->InfoLog)
2380 ralloc_free(shader->InfoLog);
2381
2382 if (!state->error)
2383 set_shader_inout_layout(shader, state);
2384
2385 shader->CompileStatus = state->error ? COMPILE_FAILURE : COMPILE_SUCCESS;
2386 shader->InfoLog = state->info_log;
2387 shader->Version = state->language_version;
2388 shader->IsES = state->es_shader;
2389 shader->has_implicit_conversions = state->has_implicit_conversions();
2390 shader->has_implicit_int_to_uint_conversion =
2391 state->has_implicit_int_to_uint_conversion();
2392 shader->KHR_shader_subgroup_basic_enable = state->KHR_shader_subgroup_basic_enable;
2393
2394 struct gl_shader_compiler_options *options =
2395 &ctx->Const.ShaderCompilerOptions[shader->Stage];
2396
2397 if (!state->error && !shader->ir->is_empty()) {
2398 if (state->es_shader &&
2399 (options->LowerPrecisionFloat16 || options->LowerPrecisionInt16))
2400 lower_precision(options, shader->ir);
2401 lower_builtins(shader->ir);
2402 assign_subroutine_indexes(state);
2403 lower_subroutine(shader->ir, state);
2404 opt_shader(&ctx->Const, &ctx->Extensions, shader);
2405 }
2406
2407 if (!force_recompile) {
2408 free((void *)shader->FallbackSource);
2409
2410 /* Copy pre-processed shader include to fallback source otherwise we
2411 * have no guarantee the shader include source tree has not changed.
2412 */
2413 if (source_has_shader_include) {
2414 shader->FallbackSource = strdup(source);
2415 memcpy(shader->fallback_source_blake3, source_blake3, BLAKE3_OUT_LEN);
2416 } else {
2417 shader->FallbackSource = NULL;
2418 }
2419 }
2420
2421 delete state->symbols;
2422 ralloc_free(state);
2423
2424 if (ctx->_Shader && ctx->_Shader->Flags & GLSL_DUMP) {
2425 if (shader->CompileStatus) {
2426 assert(shader->ir);
2427 _mesa_log("GLSL IR for shader %d:\n", shader->Name);
2428 _mesa_print_ir(mesa_log_get_file(), shader->ir, NULL);
2429 _mesa_log("\n\n");
2430 } else {
2431 _mesa_log("GLSL shader %d failed to compile.\n", shader->Name);
2432 }
2433 if (shader->InfoLog && shader->InfoLog[0] != 0) {
2434 _mesa_log("GLSL shader %d info log:\n", shader->Name);
2435 _mesa_log("%s\n", shader->InfoLog);
2436 }
2437 }
2438
2439 if (dump_ir_file) {
2440 if (shader->CompileStatus) {
2441 assert(shader->ir);
2442 _mesa_print_ir(dump_ir_file, shader->ir, NULL);
2443 }
2444 }
2445
2446 if (shader->CompileStatus == COMPILE_SUCCESS) {
2447 memcpy(shader->compiled_source_blake3, source_blake3, BLAKE3_OUT_LEN);
2448
2449 shader->nir = glsl_to_nir(shader, options->NirOptions, source_blake3);
2450 }
2451
2452 if (ctx->Cache && shader->CompileStatus == COMPILE_SUCCESS) {
2453 char sha1_buf[41];
2454 disk_cache_put_key(ctx->Cache, shader->disk_cache_sha1);
2455 if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
2456 _mesa_sha1_format(sha1_buf, shader->disk_cache_sha1);
2457 fprintf(stderr, "marking shader: %s\n", sha1_buf);
2458 }
2459 }
2460 }
2461
2462 } /* extern "C" */
2463 /**
2464 * Do the set of common optimizations passes
2465 *
2466 * \param ir List of instructions to be optimized
2467 * \param linked Is the shader linked? This enables
2468 * optimizations passes that remove code at
2469 * global scope and could cause linking to
2470 * fail.
2471 * \param uniform_locations_assigned Have locations already been assigned for
2472 * uniforms? This prevents the declarations
2473 * of unused uniforms from being removed.
2474 * The setting of this flag only matters if
2475 * \c linked is \c true.
2476 * \param options The driver's preferred shader options.
2477 * \param native_integers Selects optimizations that depend on the
2478 * implementations supporting integers
2479 * natively (as opposed to supporting
2480 * integers in floating point registers).
2481 */
2482 bool
do_common_optimization(exec_list * ir,bool linked,const struct gl_shader_compiler_options * options,bool native_integers)2483 do_common_optimization(exec_list *ir, bool linked,
2484 const struct gl_shader_compiler_options *options,
2485 bool native_integers)
2486 {
2487 const bool debug = false;
2488 bool progress = false;
2489
2490 #define OPT(PASS, ...) do { \
2491 if (debug) { \
2492 fprintf(stderr, "START GLSL optimization %s\n", #PASS); \
2493 const bool opt_progress = PASS(__VA_ARGS__); \
2494 progress = opt_progress || progress; \
2495 if (opt_progress) \
2496 _mesa_print_ir(stderr, ir, NULL); \
2497 fprintf(stderr, "GLSL optimization %s: %s progress\n", \
2498 #PASS, opt_progress ? "made" : "no"); \
2499 } else { \
2500 progress = PASS(__VA_ARGS__) || progress; \
2501 } \
2502 } while (false)
2503
2504 OPT(propagate_invariance, ir);
2505 OPT(do_if_simplification, ir);
2506 OPT(opt_flatten_nested_if_blocks, ir);
2507
2508 if (options->OptimizeForAOS && !linked)
2509 OPT(opt_flip_matrices, ir);
2510
2511 OPT(do_dead_code_unlinked, ir);
2512 OPT(do_tree_grafting, ir);
2513 OPT(do_minmax_prune, ir);
2514 OPT(do_rebalance_tree, ir);
2515 OPT(do_algebraic, ir, native_integers, options);
2516 OPT(do_lower_jumps, ir, true, options->EmitNoCont);
2517
2518 /* If an optimization pass fails to preserve the invariant flag, calling
2519 * the pass only once earlier may result in incorrect code generation. Always call
2520 * propagate_invariance() last to avoid this possibility.
2521 */
2522 OPT(propagate_invariance, ir);
2523
2524 #undef OPT
2525
2526 return progress;
2527 }
2528