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 "ir_optimization.h"
41 #include "builtin_functions.h"
42
43 /**
44 * Format a short human-readable description of the given GLSL version.
45 */
46 const char *
glsl_compute_version_string(void * mem_ctx,bool is_es,unsigned version)47 glsl_compute_version_string(void *mem_ctx, bool is_es, unsigned version)
48 {
49 return ralloc_asprintf(mem_ctx, "GLSL%s %d.%02d", is_es ? " ES" : "",
50 version / 100, version % 100);
51 }
52
53
54 static const unsigned known_desktop_glsl_versions[] =
55 { 110, 120, 130, 140, 150, 330, 400, 410, 420, 430, 440, 450, 460 };
56 static const unsigned known_desktop_gl_versions[] =
57 { 20, 21, 30, 31, 32, 33, 40, 41, 42, 43, 44, 45, 46 };
58
59
_mesa_glsl_parse_state(struct gl_context * _ctx,gl_shader_stage stage,void * mem_ctx)60 _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
61 gl_shader_stage stage,
62 void *mem_ctx)
63 : ctx(_ctx), exts(&_ctx->Extensions), consts(&_ctx->Const),
64 api(_ctx->API), cs_input_local_size_specified(false), cs_input_local_size(),
65 switch_state(), warnings_enabled(true)
66 {
67 assert(stage < MESA_SHADER_STAGES);
68 this->stage = stage;
69
70 this->scanner = NULL;
71 this->translation_unit.make_empty();
72 this->symbols = new(mem_ctx) glsl_symbol_table;
73
74 this->linalloc = linear_context(this);
75
76 this->info_log = ralloc_strdup(mem_ctx, "");
77 this->error = false;
78 this->loop_nesting_ast = NULL;
79
80 this->uses_builtin_functions = false;
81
82 /* Set default language version and extensions */
83 this->language_version = 110;
84 this->forced_language_version = ctx->Const.ForceGLSLVersion;
85 if (ctx->Const.GLSLZeroInit == 1) {
86 this->zero_init = (1u << ir_var_auto) | (1u << ir_var_temporary) | (1u << ir_var_shader_out);
87 } else if (ctx->Const.GLSLZeroInit == 2) {
88 this->zero_init = (1u << ir_var_auto) | (1u << ir_var_temporary) | (1u << ir_var_function_out);
89 } else {
90 this->zero_init = 0;
91 }
92 this->gl_version = 20;
93 this->compat_shader = true;
94 this->es_shader = false;
95 this->ARB_texture_rectangle_enable = true;
96
97 /* OpenGL ES 2.0 has different defaults from desktop GL. */
98 if (_mesa_is_gles2(ctx)) {
99 this->language_version = 100;
100 this->es_shader = true;
101 this->ARB_texture_rectangle_enable = false;
102 }
103
104 this->extensions = &ctx->Extensions;
105
106 this->Const.MaxLights = ctx->Const.MaxLights;
107 this->Const.MaxClipPlanes = ctx->Const.MaxClipPlanes;
108 this->Const.MaxTextureUnits = ctx->Const.MaxTextureUnits;
109 this->Const.MaxTextureCoords = ctx->Const.MaxTextureCoordUnits;
110 this->Const.MaxVertexAttribs = ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs;
111 this->Const.MaxVertexUniformComponents = ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents;
112 this->Const.MaxVertexTextureImageUnits = ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits;
113 this->Const.MaxCombinedTextureImageUnits = ctx->Const.MaxCombinedTextureImageUnits;
114 this->Const.MaxTextureImageUnits = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits;
115 this->Const.MaxFragmentUniformComponents = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents;
116 this->Const.MinProgramTexelOffset = ctx->Const.MinProgramTexelOffset;
117 this->Const.MaxProgramTexelOffset = ctx->Const.MaxProgramTexelOffset;
118
119 this->Const.MaxDrawBuffers = ctx->Const.MaxDrawBuffers;
120
121 this->Const.MaxDualSourceDrawBuffers = ctx->Const.MaxDualSourceDrawBuffers;
122
123 /* 1.50 constants */
124 this->Const.MaxVertexOutputComponents = ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
125 this->Const.MaxGeometryInputComponents = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxInputComponents;
126 this->Const.MaxGeometryOutputComponents = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxOutputComponents;
127 this->Const.MaxGeometryShaderInvocations = ctx->Const.MaxGeometryShaderInvocations;
128 this->Const.MaxFragmentInputComponents = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents;
129 this->Const.MaxGeometryTextureImageUnits = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits;
130 this->Const.MaxGeometryOutputVertices = ctx->Const.MaxGeometryOutputVertices;
131 this->Const.MaxGeometryTotalOutputComponents = ctx->Const.MaxGeometryTotalOutputComponents;
132 this->Const.MaxGeometryUniformComponents = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxUniformComponents;
133
134 this->Const.MaxVertexAtomicCounters = ctx->Const.Program[MESA_SHADER_VERTEX].MaxAtomicCounters;
135 this->Const.MaxTessControlAtomicCounters = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxAtomicCounters;
136 this->Const.MaxTessEvaluationAtomicCounters = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxAtomicCounters;
137 this->Const.MaxGeometryAtomicCounters = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxAtomicCounters;
138 this->Const.MaxFragmentAtomicCounters = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters;
139 this->Const.MaxComputeAtomicCounters = ctx->Const.Program[MESA_SHADER_COMPUTE].MaxAtomicCounters;
140 this->Const.MaxCombinedAtomicCounters = ctx->Const.MaxCombinedAtomicCounters;
141 this->Const.MaxAtomicBufferBindings = ctx->Const.MaxAtomicBufferBindings;
142 this->Const.MaxVertexAtomicCounterBuffers =
143 ctx->Const.Program[MESA_SHADER_VERTEX].MaxAtomicBuffers;
144 this->Const.MaxTessControlAtomicCounterBuffers =
145 ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers;
146 this->Const.MaxTessEvaluationAtomicCounterBuffers =
147 ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers;
148 this->Const.MaxGeometryAtomicCounterBuffers =
149 ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers;
150 this->Const.MaxFragmentAtomicCounterBuffers =
151 ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
152 this->Const.MaxComputeAtomicCounterBuffers =
153 ctx->Const.Program[MESA_SHADER_COMPUTE].MaxAtomicBuffers;
154 this->Const.MaxCombinedAtomicCounterBuffers =
155 ctx->Const.MaxCombinedAtomicBuffers;
156 this->Const.MaxAtomicCounterBufferSize =
157 ctx->Const.MaxAtomicBufferSize;
158
159 /* ARB_enhanced_layouts constants */
160 this->Const.MaxTransformFeedbackBuffers = ctx->Const.MaxTransformFeedbackBuffers;
161 this->Const.MaxTransformFeedbackInterleavedComponents = ctx->Const.MaxTransformFeedbackInterleavedComponents;
162
163 /* Compute shader constants */
164 for (unsigned i = 0; i < ARRAY_SIZE(this->Const.MaxComputeWorkGroupCount); i++)
165 this->Const.MaxComputeWorkGroupCount[i] = ctx->Const.MaxComputeWorkGroupCount[i];
166 for (unsigned i = 0; i < ARRAY_SIZE(this->Const.MaxComputeWorkGroupSize); i++)
167 this->Const.MaxComputeWorkGroupSize[i] = ctx->Const.MaxComputeWorkGroupSize[i];
168
169 this->Const.MaxComputeTextureImageUnits = ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits;
170 this->Const.MaxComputeUniformComponents = ctx->Const.Program[MESA_SHADER_COMPUTE].MaxUniformComponents;
171
172 this->Const.MaxImageUnits = ctx->Const.MaxImageUnits;
173 this->Const.MaxCombinedShaderOutputResources = ctx->Const.MaxCombinedShaderOutputResources;
174 this->Const.MaxImageSamples = ctx->Const.MaxImageSamples;
175 this->Const.MaxVertexImageUniforms = ctx->Const.Program[MESA_SHADER_VERTEX].MaxImageUniforms;
176 this->Const.MaxTessControlImageUniforms = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms;
177 this->Const.MaxTessEvaluationImageUniforms = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms;
178 this->Const.MaxGeometryImageUniforms = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxImageUniforms;
179 this->Const.MaxFragmentImageUniforms = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxImageUniforms;
180 this->Const.MaxComputeImageUniforms = ctx->Const.Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
181 this->Const.MaxCombinedImageUniforms = ctx->Const.MaxCombinedImageUniforms;
182
183 /* ARB_viewport_array */
184 this->Const.MaxViewports = ctx->Const.MaxViewports;
185
186 /* tessellation shader constants */
187 this->Const.MaxPatchVertices = ctx->Const.MaxPatchVertices;
188 this->Const.MaxTessGenLevel = ctx->Const.MaxTessGenLevel;
189 this->Const.MaxTessControlInputComponents = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxInputComponents;
190 this->Const.MaxTessControlOutputComponents = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxOutputComponents;
191 this->Const.MaxTessControlTextureImageUnits = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits;
192 this->Const.MaxTessEvaluationInputComponents = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxInputComponents;
193 this->Const.MaxTessEvaluationOutputComponents = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxOutputComponents;
194 this->Const.MaxTessEvaluationTextureImageUnits = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits;
195 this->Const.MaxTessPatchComponents = ctx->Const.MaxTessPatchComponents;
196 this->Const.MaxTessControlTotalOutputComponents = ctx->Const.MaxTessControlTotalOutputComponents;
197 this->Const.MaxTessControlUniformComponents = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents;
198 this->Const.MaxTessEvaluationUniformComponents = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents;
199
200 /* GL 4.5 / OES_sample_variables */
201 this->Const.MaxSamples = ctx->Const.MaxSamples;
202
203 this->current_function = NULL;
204 this->toplevel_ir = NULL;
205 this->found_return = false;
206 this->found_begin_interlock = false;
207 this->found_end_interlock = false;
208 this->all_invariant = false;
209 this->user_structures = NULL;
210 this->num_user_structures = 0;
211 this->num_subroutines = 0;
212 this->subroutines = NULL;
213 this->num_subroutine_types = 0;
214 this->subroutine_types = NULL;
215
216 /* supported_versions should be large enough to support the known desktop
217 * GLSL versions plus 4 GLES versions (ES 1.00, ES 3.00, ES 3.10, ES 3.20)
218 */
219 STATIC_ASSERT((ARRAY_SIZE(known_desktop_glsl_versions) + 4) ==
220 ARRAY_SIZE(this->supported_versions));
221
222 /* Populate the list of supported GLSL versions */
223 /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or
224 * the OpenGL 3.2 Core context is supported, this logic will need
225 * change. Older versions of GLSL are no longer supported
226 * outside the compatibility contexts of 3.x.
227 */
228 this->num_supported_versions = 0;
229 if (_mesa_is_desktop_gl(ctx)) {
230 for (unsigned i = 0; i < ARRAY_SIZE(known_desktop_glsl_versions); i++) {
231 if (known_desktop_glsl_versions[i] <= ctx->Const.GLSLVersion) {
232 this->supported_versions[this->num_supported_versions].ver
233 = known_desktop_glsl_versions[i];
234 this->supported_versions[this->num_supported_versions].gl_ver
235 = known_desktop_gl_versions[i];
236 this->supported_versions[this->num_supported_versions].es = false;
237 this->num_supported_versions++;
238 }
239 }
240 }
241 if (_mesa_is_gles2_compatible(ctx)) {
242 this->supported_versions[this->num_supported_versions].ver = 100;
243 this->supported_versions[this->num_supported_versions].gl_ver = 20;
244 this->supported_versions[this->num_supported_versions].es = true;
245 this->num_supported_versions++;
246 }
247 if (_mesa_is_gles3_compatible(ctx)) {
248 this->supported_versions[this->num_supported_versions].ver = 300;
249 this->supported_versions[this->num_supported_versions].gl_ver = 30;
250 this->supported_versions[this->num_supported_versions].es = true;
251 this->num_supported_versions++;
252 }
253 if (_mesa_is_gles31_compatible(ctx)) {
254 this->supported_versions[this->num_supported_versions].ver = 310;
255 this->supported_versions[this->num_supported_versions].gl_ver = 31;
256 this->supported_versions[this->num_supported_versions].es = true;
257 this->num_supported_versions++;
258 }
259 if (_mesa_is_gles32_compatible(ctx)) {
260 this->supported_versions[this->num_supported_versions].ver = 320;
261 this->supported_versions[this->num_supported_versions].gl_ver = 32;
262 this->supported_versions[this->num_supported_versions].es = true;
263 this->num_supported_versions++;
264 }
265
266 /* Create a string for use in error messages to tell the user which GLSL
267 * versions are supported.
268 */
269 char *supported = ralloc_strdup(this, "");
270 for (unsigned i = 0; i < this->num_supported_versions; i++) {
271 unsigned ver = this->supported_versions[i].ver;
272 const char *const prefix = (i == 0)
273 ? ""
274 : ((i == this->num_supported_versions - 1) ? ", and " : ", ");
275 const char *const suffix = (this->supported_versions[i].es) ? " ES" : "";
276
277 ralloc_asprintf_append(& supported, "%s%u.%02u%s",
278 prefix,
279 ver / 100, ver % 100,
280 suffix);
281 }
282
283 this->supported_version_string = supported;
284
285 if (ctx->Const.ForceGLSLExtensionsWarn)
286 _mesa_glsl_process_extension("all", NULL, "warn", NULL, this);
287
288 this->default_uniform_qualifier = new(this) ast_type_qualifier();
289 this->default_uniform_qualifier->flags.q.shared = 1;
290 this->default_uniform_qualifier->flags.q.column_major = 1;
291
292 this->default_shader_storage_qualifier = new(this) ast_type_qualifier();
293 this->default_shader_storage_qualifier->flags.q.shared = 1;
294 this->default_shader_storage_qualifier->flags.q.column_major = 1;
295
296 this->fs_uses_gl_fragcoord = false;
297 this->fs_redeclares_gl_fragcoord = false;
298 this->fs_origin_upper_left = false;
299 this->fs_pixel_center_integer = false;
300 this->fs_redeclares_gl_fragcoord_with_no_layout_qualifiers = false;
301
302 this->gs_input_prim_type_specified = false;
303 this->tcs_output_vertices_specified = false;
304 this->gs_input_size = 0;
305 this->in_qualifier = new(this) ast_type_qualifier();
306 this->out_qualifier = new(this) ast_type_qualifier();
307 this->fs_early_fragment_tests = false;
308 this->fs_inner_coverage = false;
309 this->fs_post_depth_coverage = false;
310 this->fs_pixel_interlock_ordered = false;
311 this->fs_pixel_interlock_unordered = false;
312 this->fs_sample_interlock_ordered = false;
313 this->fs_sample_interlock_unordered = false;
314 this->fs_blend_support = 0;
315 memset(this->atomic_counter_offsets, 0,
316 sizeof(this->atomic_counter_offsets));
317 this->allow_extension_directive_midshader =
318 ctx->Const.AllowGLSLExtensionDirectiveMidShader;
319 this->alias_shader_extension =
320 ctx->Const.AliasShaderExtension;
321 this->allow_vertex_texture_bias =
322 ctx->Const.AllowVertexTextureBias;
323 this->allow_glsl_120_subset_in_110 =
324 ctx->Const.AllowGLSL120SubsetIn110;
325 this->allow_builtin_variable_redeclaration =
326 ctx->Const.AllowGLSLBuiltinVariableRedeclaration;
327 this->ignore_write_to_readonly_var =
328 ctx->Const.GLSLIgnoreWriteToReadonlyVar;
329
330 this->cs_input_local_size_variable_specified = false;
331
332 /* ARB_bindless_texture */
333 this->bindless_sampler_specified = false;
334 this->bindless_image_specified = false;
335 this->bound_sampler_specified = false;
336 this->bound_image_specified = false;
337
338 this->language_version = this->forced_language_version ?
339 this->forced_language_version : this->language_version;
340 set_valid_gl_and_glsl_versions(NULL);
341 }
342
343 /**
344 * Determine whether the current GLSL version is sufficiently high to support
345 * a certain feature, and generate an error message if it isn't.
346 *
347 * \param required_glsl_version and \c required_glsl_es_version are
348 * interpreted as they are in _mesa_glsl_parse_state::is_version().
349 *
350 * \param locp is the parser location where the error should be reported.
351 *
352 * \param fmt (and additional arguments) constitute a printf-style error
353 * message to report if the version check fails. Information about the
354 * current and required GLSL versions will be appended. So, for example, if
355 * the GLSL version being compiled is 1.20, and check_version(130, 300, locp,
356 * "foo unsupported") is called, the error message will be "foo unsupported in
357 * GLSL 1.20 (GLSL 1.30 or GLSL 3.00 ES required)".
358 */
359 bool
check_version(unsigned required_glsl_version,unsigned required_glsl_es_version,YYLTYPE * locp,const char * fmt,...)360 _mesa_glsl_parse_state::check_version(unsigned required_glsl_version,
361 unsigned required_glsl_es_version,
362 YYLTYPE *locp, const char *fmt, ...)
363 {
364 if (this->is_version(required_glsl_version, required_glsl_es_version))
365 return true;
366
367 va_list args;
368 va_start(args, fmt);
369 char *problem = ralloc_vasprintf(this, fmt, args);
370 va_end(args);
371 const char *glsl_version_string
372 = glsl_compute_version_string(this, false, required_glsl_version);
373 const char *glsl_es_version_string
374 = glsl_compute_version_string(this, true, required_glsl_es_version);
375 const char *requirement_string = "";
376 if (required_glsl_version && required_glsl_es_version) {
377 requirement_string = ralloc_asprintf(this, " (%s or %s required)",
378 glsl_version_string,
379 glsl_es_version_string);
380 } else if (required_glsl_version) {
381 requirement_string = ralloc_asprintf(this, " (%s required)",
382 glsl_version_string);
383 } else if (required_glsl_es_version) {
384 requirement_string = ralloc_asprintf(this, " (%s required)",
385 glsl_es_version_string);
386 }
387 _mesa_glsl_error(locp, this, "%s in %s%s",
388 problem, this->get_version_string(),
389 requirement_string);
390
391 return false;
392 }
393
394 /**
395 * This makes sure any GLSL versions defined or overridden are valid. If not it
396 * sets a valid value.
397 */
398 void
set_valid_gl_and_glsl_versions(YYLTYPE * locp)399 _mesa_glsl_parse_state::set_valid_gl_and_glsl_versions(YYLTYPE *locp)
400 {
401 bool supported = false;
402 for (unsigned i = 0; i < this->num_supported_versions; i++) {
403 if (this->supported_versions[i].ver == this->language_version
404 && this->supported_versions[i].es == this->es_shader) {
405 this->gl_version = this->supported_versions[i].gl_ver;
406 supported = true;
407 break;
408 }
409 }
410
411 if (!supported) {
412 if (locp) {
413 _mesa_glsl_error(locp, this, "%s is not supported. "
414 "Supported versions are: %s",
415 this->get_version_string(),
416 this->supported_version_string);
417 }
418
419 /* On exit, the language_version must be set to a valid value.
420 * Later calls to _mesa_glsl_initialize_types will misbehave if
421 * the version is invalid.
422 */
423 switch (this->api) {
424 case API_OPENGL_COMPAT:
425 case API_OPENGL_CORE:
426 this->language_version = this->consts->GLSLVersion;
427 break;
428
429 case API_OPENGLES:
430 FALLTHROUGH;
431
432 case API_OPENGLES2:
433 this->language_version = 100;
434 break;
435 }
436 }
437 }
438
439 /**
440 * Process a GLSL #version directive.
441 *
442 * \param version is the integer that follows the #version token.
443 *
444 * \param ident is a string identifier that follows the integer, if any is
445 * present. Otherwise NULL.
446 */
447 void
process_version_directive(YYLTYPE * locp,int version,const char * ident)448 _mesa_glsl_parse_state::process_version_directive(YYLTYPE *locp, int version,
449 const char *ident)
450 {
451 bool es_token_present = false;
452 bool compat_token_present = false;
453 if (ident) {
454 if (strcmp(ident, "es") == 0) {
455 es_token_present = true;
456 } else if (version >= 150) {
457 if (strcmp(ident, "core") == 0) {
458 /* Accept the token. There's no need to record that this is
459 * a core profile shader since that's the only profile we support.
460 */
461 } else if (strcmp(ident, "compatibility") == 0) {
462 compat_token_present = true;
463
464 if (this->api != API_OPENGL_COMPAT &&
465 !this->consts->AllowGLSLCompatShaders) {
466 _mesa_glsl_error(locp, this,
467 "the compatibility profile is not supported");
468 }
469 } else {
470 _mesa_glsl_error(locp, this,
471 "\"%s\" is not a valid shading language profile; "
472 "if present, it must be \"core\"", ident);
473 }
474 } else {
475 _mesa_glsl_error(locp, this,
476 "illegal text following version number");
477 }
478 }
479
480 this->es_shader = es_token_present;
481 if (version == 100) {
482 if (es_token_present) {
483 _mesa_glsl_error(locp, this,
484 "GLSL 1.00 ES should be selected using "
485 "`#version 100'");
486 } else {
487 this->es_shader = true;
488 }
489 }
490
491 if (this->es_shader) {
492 this->ARB_texture_rectangle_enable = false;
493 }
494
495 if (this->forced_language_version)
496 this->language_version = this->forced_language_version;
497 else
498 this->language_version = version;
499
500 this->compat_shader = compat_token_present ||
501 this->consts->ForceCompatShaders ||
502 (this->api == API_OPENGL_COMPAT &&
503 this->language_version == 140) ||
504 (!this->es_shader && this->language_version < 140);
505
506 set_valid_gl_and_glsl_versions(locp);
507 }
508
509
510 /* This helper function will append the given message to the shader's
511 info log and report it via GL_ARB_debug_output. Per that extension,
512 'type' is one of the enum values classifying the message, and
513 'id' is the implementation-defined ID of the given message. */
514 static void
_mesa_glsl_msg(const YYLTYPE * locp,_mesa_glsl_parse_state * state,GLenum type,const char * fmt,va_list ap)515 _mesa_glsl_msg(const YYLTYPE *locp, _mesa_glsl_parse_state *state,
516 GLenum type, const char *fmt, va_list ap)
517 {
518 bool error = (type == MESA_DEBUG_TYPE_ERROR);
519 GLuint msg_id = 0;
520
521 assert(state->info_log != NULL);
522
523 /* Get the offset that the new message will be written to. */
524 int msg_offset = strlen(state->info_log);
525
526 if (locp->path) {
527 ralloc_asprintf_append(&state->info_log, "\"%s\"", locp->path);
528 } else {
529 ralloc_asprintf_append(&state->info_log, "%u", locp->source);
530 }
531 ralloc_asprintf_append(&state->info_log, ":%u(%u): %s: ",
532 locp->first_line, locp->first_column,
533 error ? "error" : "warning");
534
535 ralloc_vasprintf_append(&state->info_log, fmt, ap);
536
537 const char *const msg = &state->info_log[msg_offset];
538 struct gl_context *ctx = state->ctx;
539
540 /* Report the error via GL_ARB_debug_output. */
541 _mesa_shader_debug(ctx, type, &msg_id, msg);
542
543 ralloc_strcat(&state->info_log, "\n");
544 }
545
546 void
_mesa_glsl_error(YYLTYPE * locp,_mesa_glsl_parse_state * state,const char * fmt,...)547 _mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state,
548 const char *fmt, ...)
549 {
550 va_list ap;
551
552 state->error = true;
553
554 va_start(ap, fmt);
555 _mesa_glsl_msg(locp, state, MESA_DEBUG_TYPE_ERROR, fmt, ap);
556 va_end(ap);
557 }
558
559
560 void
_mesa_glsl_warning(const YYLTYPE * locp,_mesa_glsl_parse_state * state,const char * fmt,...)561 _mesa_glsl_warning(const YYLTYPE *locp, _mesa_glsl_parse_state *state,
562 const char *fmt, ...)
563 {
564 if (state->warnings_enabled) {
565 va_list ap;
566
567 va_start(ap, fmt);
568 _mesa_glsl_msg(locp, state, MESA_DEBUG_TYPE_OTHER, fmt, ap);
569 va_end(ap);
570 }
571 }
572
573
574 /**
575 * Enum representing the possible behaviors that can be specified in
576 * an #extension directive.
577 */
578 enum ext_behavior {
579 extension_disable,
580 extension_enable,
581 extension_require,
582 extension_warn
583 };
584
585 /**
586 * Element type for _mesa_glsl_supported_extensions
587 */
588 struct _mesa_glsl_extension {
589 /**
590 * Name of the extension when referred to in a GLSL extension
591 * statement
592 */
593 const char *name;
594
595 /**
596 * Whether this extension is a part of AEP
597 */
598 bool aep;
599
600 /**
601 * Predicate that checks whether the relevant extension is available for
602 * this context.
603 */
604 bool (*available_pred)(const _mesa_glsl_parse_state *,
605 gl_api api, uint8_t version);
606
607 /**
608 * Flag in the _mesa_glsl_parse_state struct that should be set
609 * when this extension is enabled.
610 *
611 * See note in _mesa_glsl_extension::supported_flag about "pointer
612 * to member" types.
613 */
614 bool _mesa_glsl_parse_state::* enable_flag;
615
616 /**
617 * Flag in the _mesa_glsl_parse_state struct that should be set
618 * when the shader requests "warn" behavior for this extension.
619 *
620 * See note in _mesa_glsl_extension::supported_flag about "pointer
621 * to member" types.
622 */
623 bool _mesa_glsl_parse_state::* warn_flag;
624
625
626 bool compatible_with_state(const _mesa_glsl_parse_state *state,
627 gl_api api, uint8_t gl_version) const;
628 void set_flags(_mesa_glsl_parse_state *state, ext_behavior behavior) const;
629 };
630
631 /** Checks if the context supports a user-facing extension */
632 #define EXT(name_str, driver_cap, ...) \
633 static UNUSED bool \
634 has_##name_str(const _mesa_glsl_parse_state *state, gl_api api, uint8_t version) \
635 { \
636 return state->exts->driver_cap && (version >= \
637 _mesa_extension_table[MESA_EXTENSION_##name_str].version[api]); \
638 }
639 #include "main/extensions_table.h"
640 #undef EXT
641
642 static unsigned
mesa_stage_to_gl_stage_bit(unsigned stage)643 mesa_stage_to_gl_stage_bit(unsigned stage)
644 {
645 switch (stage) {
646 case MESA_SHADER_VERTEX:
647 return GL_VERTEX_SHADER_BIT;
648 case MESA_SHADER_TESS_CTRL:
649 return GL_TESS_CONTROL_SHADER_BIT;
650 case MESA_SHADER_TESS_EVAL:
651 return GL_TESS_EVALUATION_SHADER_BIT;
652 case MESA_SHADER_GEOMETRY:
653 return GL_GEOMETRY_SHADER_BIT;
654 case MESA_SHADER_FRAGMENT:
655 return GL_FRAGMENT_SHADER_BIT;
656 case MESA_SHADER_COMPUTE:
657 return GL_COMPUTE_SHADER_BIT;
658 default:
659 unreachable("glsl parser: invalid shader stage");
660 }
661 }
662
663 #define HAS_SUBGROUP_EXT(name, feature) \
664 static bool \
665 has_KHR_shader_subgroup_##name(const _mesa_glsl_parse_state *state, gl_api api, uint8_t version) \
666 { \
667 unsigned stage = mesa_stage_to_gl_stage_bit(state->stage); \
668 return state->exts->KHR_shader_subgroup && \
669 (version >= _mesa_extension_table[MESA_EXTENSION_KHR_shader_subgroup].version[api]) && \
670 (state->consts->ShaderSubgroupSupportedStages & stage) && \
671 (state->consts->ShaderSubgroupSupportedFeatures & GL_SUBGROUP_FEATURE_##feature##_BIT_KHR); \
672 }
673
HAS_SUBGROUP_EXT(basic,BASIC)674 HAS_SUBGROUP_EXT(basic, BASIC)
675 HAS_SUBGROUP_EXT(vote, VOTE)
676 HAS_SUBGROUP_EXT(arithmetic, ARITHMETIC)
677 HAS_SUBGROUP_EXT(ballot, BALLOT)
678 HAS_SUBGROUP_EXT(shuffle, SHUFFLE)
679 HAS_SUBGROUP_EXT(shuffle_relative, SHUFFLE_RELATIVE)
680 HAS_SUBGROUP_EXT(clustered, CLUSTERED)
681 HAS_SUBGROUP_EXT(quad_, QUAD)
682
683 static bool
684 has_KHR_shader_subgroup_quad(const _mesa_glsl_parse_state *state, gl_api api, uint8_t version)
685 {
686 return has_KHR_shader_subgroup_quad_(state, api, version) &&
687 ((state->stage == MESA_SHADER_FRAGMENT || state->stage == MESA_SHADER_COMPUTE) ||
688 state->consts->ShaderSubgroupQuadAllStages);
689 }
690
691 #define EXT(NAME) \
692 { "GL_" #NAME, false, has_##NAME, \
693 &_mesa_glsl_parse_state::NAME##_enable, \
694 &_mesa_glsl_parse_state::NAME##_warn }
695
696 #define EXT_AEP(NAME) \
697 { "GL_" #NAME, true, has_##NAME, \
698 &_mesa_glsl_parse_state::NAME##_enable, \
699 &_mesa_glsl_parse_state::NAME##_warn }
700
701 /**
702 * Table of extensions that can be enabled/disabled within a shader,
703 * and the conditions under which they are supported.
704 */
705 static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
706 /* ARB extensions go here, sorted alphabetically.
707 */
708 EXT(ARB_ES3_1_compatibility),
709 EXT(ARB_ES3_2_compatibility),
710 EXT(ARB_arrays_of_arrays),
711 EXT(ARB_bindless_texture),
712 EXT(ARB_compatibility),
713 EXT(ARB_compute_shader),
714 EXT(ARB_compute_variable_group_size),
715 EXT(ARB_conservative_depth),
716 EXT(ARB_cull_distance),
717 EXT(ARB_derivative_control),
718 EXT(ARB_draw_buffers),
719 EXT(ARB_draw_instanced),
720 EXT(ARB_enhanced_layouts),
721 EXT(ARB_explicit_attrib_location),
722 EXT(ARB_explicit_uniform_location),
723 EXT(ARB_fragment_coord_conventions),
724 EXT(ARB_fragment_layer_viewport),
725 EXT(ARB_fragment_shader_interlock),
726 EXT(ARB_gpu_shader5),
727 EXT(ARB_gpu_shader_fp64),
728 EXT(ARB_gpu_shader_int64),
729 EXT(ARB_post_depth_coverage),
730 EXT(ARB_sample_shading),
731 EXT(ARB_separate_shader_objects),
732 EXT(ARB_shader_atomic_counter_ops),
733 EXT(ARB_shader_atomic_counters),
734 EXT(ARB_shader_ballot),
735 EXT(ARB_shader_bit_encoding),
736 EXT(ARB_shader_clock),
737 EXT(ARB_shader_draw_parameters),
738 EXT(ARB_shader_group_vote),
739 EXT(ARB_shader_image_load_store),
740 EXT(ARB_shader_image_size),
741 EXT(ARB_shader_precision),
742 EXT(ARB_shader_stencil_export),
743 EXT(ARB_shader_storage_buffer_object),
744 EXT(ARB_shader_subroutine),
745 EXT(ARB_shader_texture_image_samples),
746 EXT(ARB_shader_texture_lod),
747 EXT(ARB_shader_viewport_layer_array),
748 EXT(ARB_shading_language_420pack),
749 EXT(ARB_shading_language_include),
750 EXT(ARB_shading_language_packing),
751 EXT(ARB_sparse_texture2),
752 EXT(ARB_sparse_texture_clamp),
753 EXT(ARB_tessellation_shader),
754 EXT(ARB_texture_cube_map_array),
755 EXT(ARB_texture_gather),
756 EXT(ARB_texture_multisample),
757 EXT(ARB_texture_query_levels),
758 EXT(ARB_texture_query_lod),
759 EXT(ARB_texture_rectangle),
760 EXT(ARB_uniform_buffer_object),
761 EXT(ARB_vertex_attrib_64bit),
762 EXT(ARB_viewport_array),
763
764 /* KHR extensions go here, sorted alphabetically.
765 */
766 EXT_AEP(KHR_blend_equation_advanced),
767 EXT(KHR_shader_subgroup_arithmetic),
768 EXT(KHR_shader_subgroup_ballot),
769 EXT(KHR_shader_subgroup_basic),
770 EXT(KHR_shader_subgroup_clustered),
771 EXT(KHR_shader_subgroup_quad),
772 EXT(KHR_shader_subgroup_shuffle),
773 EXT(KHR_shader_subgroup_shuffle_relative),
774 EXT(KHR_shader_subgroup_vote),
775
776 /* OES extensions go here, sorted alphabetically.
777 */
778 EXT(OES_EGL_image_external),
779 EXT(OES_EGL_image_external_essl3),
780 EXT(OES_geometry_point_size),
781 EXT(OES_geometry_shader),
782 EXT(OES_gpu_shader5),
783 EXT(OES_primitive_bounding_box),
784 EXT_AEP(OES_sample_variables),
785 EXT_AEP(OES_shader_image_atomic),
786 EXT(OES_shader_io_blocks),
787 EXT_AEP(OES_shader_multisample_interpolation),
788 EXT(OES_standard_derivatives),
789 EXT(OES_tessellation_point_size),
790 EXT(OES_tessellation_shader),
791 EXT(OES_texture_3D),
792 EXT(OES_texture_buffer),
793 EXT(OES_texture_cube_map_array),
794 EXT_AEP(OES_texture_storage_multisample_2d_array),
795 EXT(OES_viewport_array),
796
797 /* All other extensions go here, sorted alphabetically.
798 */
799 EXT(AMD_conservative_depth),
800 EXT(AMD_gpu_shader_half_float),
801 EXT(AMD_gpu_shader_int64),
802 EXT(AMD_shader_stencil_export),
803 EXT(AMD_shader_trinary_minmax),
804 EXT(AMD_texture_texture4),
805 EXT(AMD_vertex_shader_layer),
806 EXT(AMD_vertex_shader_viewport_index),
807 EXT(ANDROID_extension_pack_es31a),
808 EXT(ARM_shader_framebuffer_fetch_depth_stencil),
809 EXT(EXT_blend_func_extended),
810 EXT(EXT_demote_to_helper_invocation),
811 EXT(EXT_frag_depth),
812 EXT(EXT_draw_buffers),
813 EXT(EXT_draw_instanced),
814 EXT(EXT_clip_cull_distance),
815 EXT(EXT_geometry_point_size),
816 EXT_AEP(EXT_geometry_shader),
817 EXT(EXT_gpu_shader4),
818 EXT_AEP(EXT_gpu_shader5),
819 EXT_AEP(EXT_primitive_bounding_box),
820 EXT(EXT_separate_shader_objects),
821 EXT(EXT_shader_framebuffer_fetch),
822 EXT(EXT_shader_framebuffer_fetch_non_coherent),
823 EXT(EXT_shader_group_vote),
824 EXT(EXT_shader_image_load_formatted),
825 EXT(EXT_shader_image_load_store),
826 EXT(EXT_shader_implicit_conversions),
827 EXT(EXT_shader_integer_mix),
828 EXT_AEP(EXT_shader_io_blocks),
829 EXT(EXT_shader_samples_identical),
830 EXT(EXT_shadow_samplers),
831 EXT(EXT_tessellation_point_size),
832 EXT_AEP(EXT_tessellation_shader),
833 EXT(EXT_texture_array),
834 EXT_AEP(EXT_texture_buffer),
835 EXT_AEP(EXT_texture_cube_map_array),
836 EXT(EXT_texture_query_lod),
837 EXT(EXT_texture_shadow_lod),
838 EXT(INTEL_conservative_rasterization),
839 EXT(INTEL_shader_atomic_float_minmax),
840 EXT(INTEL_shader_integer_functions2),
841 EXT(MESA_shader_integer_functions),
842 EXT(NV_compute_shader_derivatives),
843 EXT(NV_fragment_shader_interlock),
844 EXT(NV_image_formats),
845 EXT(NV_shader_atomic_float),
846 EXT(NV_shader_atomic_int64),
847 EXT(NV_shader_noperspective_interpolation),
848 EXT(NV_viewport_array2),
849 EXT(OVR_multiview),
850 EXT(OVR_multiview2),
851 };
852
853 #undef EXT
854
855
856 /**
857 * Determine whether a given extension is compatible with the target,
858 * API, and extension information in the current parser state.
859 */
compatible_with_state(const _mesa_glsl_parse_state * state,gl_api api,uint8_t gl_version) const860 bool _mesa_glsl_extension::compatible_with_state(
861 const _mesa_glsl_parse_state *state, gl_api api, uint8_t gl_version) const
862 {
863 return this->available_pred(state, api, gl_version);
864 }
865
866 /**
867 * Set the appropriate flags in the parser state to establish the
868 * given behavior for this extension.
869 */
set_flags(_mesa_glsl_parse_state * state,ext_behavior behavior) const870 void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state *state,
871 ext_behavior behavior) const
872 {
873 /* Note: the ->* operator indexes into state by the
874 * offsets this->enable_flag and this->warn_flag. See
875 * _mesa_glsl_extension::supported_flag for more info.
876 */
877 state->*(this->enable_flag) = (behavior != extension_disable);
878 state->*(this->warn_flag) = (behavior == extension_warn);
879 }
880
881 /**
882 * Check alias_shader_extension for any aliased shader extensions
883 */
find_extension_alias(_mesa_glsl_parse_state * state,const char * name)884 static const char *find_extension_alias(_mesa_glsl_parse_state *state, const char *name)
885 {
886 char *exts, *field, *ext_alias = NULL;
887
888 /* Copy alias_shader_extension because strtok() is destructive. */
889 exts = strdup(state->alias_shader_extension);
890 if (exts) {
891 for (field = strtok(exts, ","); field != NULL; field = strtok(NULL, ",")) {
892 if(strncmp(name, field, strlen(name)) == 0) {
893 field = strstr(field, ":");
894 if(field) {
895 ext_alias = strdup(field + 1);
896 }
897 break;
898 }
899 }
900
901 free(exts);
902 }
903 return ext_alias;
904 }
905
906 /**
907 * Find an extension by name in _mesa_glsl_supported_extensions. If
908 * the name is not found, return NULL.
909 */
find_extension(_mesa_glsl_parse_state * state,const char * name)910 static const _mesa_glsl_extension *find_extension(_mesa_glsl_parse_state *state, const char *name)
911 {
912 const char *ext_alias = NULL;
913 if (state->alias_shader_extension) {
914 ext_alias = find_extension_alias(state, name);
915 name = ext_alias ? ext_alias : name;
916 }
917
918 for (unsigned i = 0; i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
919 if (strcmp(name, _mesa_glsl_supported_extensions[i].name) == 0) {
920 free((void *)ext_alias);
921 return &_mesa_glsl_supported_extensions[i];
922 }
923 }
924
925 free((void *)ext_alias);
926 return NULL;
927 }
928
929 bool
_mesa_glsl_process_extension(const char * name,YYLTYPE * name_locp,const char * behavior_string,YYLTYPE * behavior_locp,_mesa_glsl_parse_state * state)930 _mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
931 const char *behavior_string, YYLTYPE *behavior_locp,
932 _mesa_glsl_parse_state *state)
933 {
934 uint8_t gl_version = state->exts->Version;
935 gl_api api = state->api;
936 ext_behavior behavior;
937 if (strcmp(behavior_string, "warn") == 0) {
938 behavior = extension_warn;
939 } else if (strcmp(behavior_string, "require") == 0) {
940 behavior = extension_require;
941 } else if (strcmp(behavior_string, "enable") == 0) {
942 behavior = extension_enable;
943 } else if (strcmp(behavior_string, "disable") == 0) {
944 behavior = extension_disable;
945 } else {
946 _mesa_glsl_error(behavior_locp, state,
947 "unknown extension behavior `%s'",
948 behavior_string);
949 return false;
950 }
951
952 /* If we're in a desktop context but with an ES shader, use an ES API enum
953 * to verify extension availability.
954 */
955 if (state->es_shader && api != API_OPENGLES2)
956 api = API_OPENGLES2;
957 /* Use the language-version derived GL version to extension checks, unless
958 * we're using meta, which sets the version to the max.
959 */
960 if (gl_version != 0xff)
961 gl_version = state->gl_version;
962
963 if (strcmp(name, "all") == 0) {
964 if ((behavior == extension_enable) || (behavior == extension_require)) {
965 _mesa_glsl_error(name_locp, state, "cannot %s all extensions",
966 (behavior == extension_enable)
967 ? "enable" : "require");
968 return false;
969 } else {
970 for (unsigned i = 0;
971 i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
972 const _mesa_glsl_extension *extension
973 = &_mesa_glsl_supported_extensions[i];
974 if (extension->compatible_with_state(state, api, gl_version)) {
975 _mesa_glsl_supported_extensions[i].set_flags(state, behavior);
976 }
977 }
978 }
979 } else {
980 const _mesa_glsl_extension *extension = find_extension(state, name);
981 if (extension &&
982 (extension->compatible_with_state(state, api, gl_version) ||
983 (state->consts->AllowGLSLCompatShaders &&
984 extension->compatible_with_state(state, API_OPENGL_COMPAT, gl_version)))) {
985 extension->set_flags(state, behavior);
986 if (extension->available_pred == has_ANDROID_extension_pack_es31a) {
987 for (unsigned i = 0;
988 i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
989 const _mesa_glsl_extension *extension =
990 &_mesa_glsl_supported_extensions[i];
991
992 if (!extension->aep)
993 continue;
994 /* AEP should not be enabled if all of the sub-extensions can't
995 * also be enabled. This is not the proper layer to do such
996 * error-checking though.
997 */
998 assert(extension->compatible_with_state(state, api, gl_version));
999 extension->set_flags(state, behavior);
1000 }
1001 } else if (extension->available_pred == has_KHR_shader_subgroup_vote ||
1002 extension->available_pred == has_KHR_shader_subgroup_arithmetic ||
1003 extension->available_pred == has_KHR_shader_subgroup_ballot ||
1004 extension->available_pred == has_KHR_shader_subgroup_shuffle ||
1005 extension->available_pred == has_KHR_shader_subgroup_shuffle_relative ||
1006 extension->available_pred == has_KHR_shader_subgroup_clustered ||
1007 extension->available_pred == has_KHR_shader_subgroup_quad) {
1008 /* GLSL KHR_shader_subgroup spec says when any of above subgroup extension
1009 * is enabled, KHR_shader_subgroup_basic extension is also implicitly enabled.
1010 */
1011 for (unsigned i = 0; i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
1012 const _mesa_glsl_extension *extension = &_mesa_glsl_supported_extensions[i];
1013 if (extension->available_pred == has_KHR_shader_subgroup_basic) {
1014 assert(extension->compatible_with_state(state, api, gl_version));
1015 extension->set_flags(state, behavior);
1016 }
1017 }
1018 }
1019 } else {
1020 static const char fmt[] = "extension `%s' unsupported in %s shader";
1021
1022 if (behavior == extension_require) {
1023 _mesa_glsl_error(name_locp, state, fmt,
1024 name, _mesa_shader_stage_to_string(state->stage));
1025 return false;
1026 } else {
1027 _mesa_glsl_warning(name_locp, state, fmt,
1028 name, _mesa_shader_stage_to_string(state->stage));
1029 }
1030 }
1031 }
1032
1033 return true;
1034 }
1035
1036 bool
_mesa_glsl_can_implicitly_convert(const glsl_type * from,const glsl_type * desired,bool has_implicit_conversions,bool has_implicit_int_to_uint_conversion)1037 _mesa_glsl_can_implicitly_convert(const glsl_type *from, const glsl_type *desired,
1038 bool has_implicit_conversions,
1039 bool has_implicit_int_to_uint_conversion)
1040 {
1041 if (from == desired)
1042 return true;
1043
1044 /* GLSL 1.10 and ESSL do not allow implicit conversions. */
1045 if (!has_implicit_conversions)
1046 return false;
1047
1048 /* There is no conversion among matrix types. */
1049 if (from->matrix_columns > 1 || desired->matrix_columns > 1)
1050 return false;
1051
1052 /* Vector size must match. */
1053 if (from->vector_elements != desired->vector_elements)
1054 return false;
1055
1056 /* int and uint can be converted to float. */
1057 if (glsl_type_is_float(desired) && (glsl_type_is_integer_32(from) ||
1058 glsl_type_is_float_16(from)))
1059 return true;
1060
1061 /* With GLSL 4.0, ARB_gpu_shader5, or MESA_shader_integer_functions, int
1062 * can be converted to uint. Note that state may be NULL here, when
1063 * resolving function calls in the linker. By this time, all the
1064 * state-dependent checks have already happened though, so allow anything
1065 * that's allowed in any shader version.
1066 */
1067 if (has_implicit_int_to_uint_conversion &&
1068 desired->base_type == GLSL_TYPE_UINT && from->base_type == GLSL_TYPE_INT)
1069 return true;
1070
1071 /* No implicit conversions from double. */
1072 if (glsl_type_is_double(from))
1073 return false;
1074
1075 /* Conversions from different types to double. */
1076 if (glsl_type_is_double(desired)) {
1077 if (glsl_type_is_float_16_32(from))
1078 return true;
1079 if (glsl_type_is_integer_32(from))
1080 return true;
1081 }
1082
1083 return false;
1084 }
1085
1086 /**
1087 * Recurses through <type> and <expr> if <expr> is an aggregate initializer
1088 * and sets <expr>'s <constructor_type> field to <type>. Gives later functions
1089 * (process_array_constructor, et al) sufficient information to do type
1090 * checking.
1091 *
1092 * Operates on assignments involving an aggregate initializer. E.g.,
1093 *
1094 * vec4 pos = {1.0, -1.0, 0.0, 1.0};
1095 *
1096 * or more ridiculously,
1097 *
1098 * struct S {
1099 * vec4 v[2];
1100 * };
1101 *
1102 * struct {
1103 * S a[2], b;
1104 * int c;
1105 * } aggregate = {
1106 * {
1107 * {
1108 * {
1109 * {1.0, 2.0, 3.0, 4.0}, // a[0].v[0]
1110 * {5.0, 6.0, 7.0, 8.0} // a[0].v[1]
1111 * } // a[0].v
1112 * }, // a[0]
1113 * {
1114 * {
1115 * {1.0, 2.0, 3.0, 4.0}, // a[1].v[0]
1116 * {5.0, 6.0, 7.0, 8.0} // a[1].v[1]
1117 * } // a[1].v
1118 * } // a[1]
1119 * }, // a
1120 * {
1121 * {
1122 * {1.0, 2.0, 3.0, 4.0}, // b.v[0]
1123 * {5.0, 6.0, 7.0, 8.0} // b.v[1]
1124 * } // b.v
1125 * }, // b
1126 * 4 // c
1127 * };
1128 *
1129 * This pass is necessary because the right-hand side of <type> e = { ... }
1130 * doesn't contain sufficient information to determine if the types match.
1131 */
1132 void
_mesa_ast_set_aggregate_type(const glsl_type * type,ast_expression * expr)1133 _mesa_ast_set_aggregate_type(const glsl_type *type,
1134 ast_expression *expr)
1135 {
1136 ast_aggregate_initializer *ai = (ast_aggregate_initializer *)expr;
1137 ai->constructor_type = type;
1138
1139 /* If the aggregate is an array, recursively set its elements' types. */
1140 if (glsl_type_is_array(type)) {
1141 /* Each array element has the type type->fields.array.
1142 *
1143 * E.g., if <type> if struct S[2] we want to set each element's type to
1144 * struct S.
1145 */
1146 for (exec_node *expr_node = ai->expressions.get_head_raw();
1147 !expr_node->is_tail_sentinel();
1148 expr_node = expr_node->next) {
1149 ast_expression *expr = exec_node_data(ast_expression, expr_node,
1150 link);
1151
1152 if (expr->oper == ast_aggregate)
1153 _mesa_ast_set_aggregate_type(type->fields.array, expr);
1154 }
1155
1156 /* If the aggregate is a struct, recursively set its fields' types. */
1157 } else if (glsl_type_is_struct(type)) {
1158 exec_node *expr_node = ai->expressions.get_head_raw();
1159
1160 /* Iterate through the struct's fields. */
1161 for (unsigned i = 0; !expr_node->is_tail_sentinel() && i < type->length;
1162 i++, expr_node = expr_node->next) {
1163 ast_expression *expr = exec_node_data(ast_expression, expr_node,
1164 link);
1165
1166 if (expr->oper == ast_aggregate) {
1167 _mesa_ast_set_aggregate_type(type->fields.structure[i].type, expr);
1168 }
1169 }
1170 /* If the aggregate is a matrix, set its columns' types. */
1171 } else if (glsl_type_is_matrix(type)) {
1172 for (exec_node *expr_node = ai->expressions.get_head_raw();
1173 !expr_node->is_tail_sentinel();
1174 expr_node = expr_node->next) {
1175 ast_expression *expr = exec_node_data(ast_expression, expr_node,
1176 link);
1177
1178 if (expr->oper == ast_aggregate)
1179 _mesa_ast_set_aggregate_type(glsl_get_column_type(type), expr);
1180 }
1181 }
1182 }
1183
1184 void
_mesa_ast_process_interface_block(YYLTYPE * locp,_mesa_glsl_parse_state * state,ast_interface_block * const block,const struct ast_type_qualifier & q)1185 _mesa_ast_process_interface_block(YYLTYPE *locp,
1186 _mesa_glsl_parse_state *state,
1187 ast_interface_block *const block,
1188 const struct ast_type_qualifier &q)
1189 {
1190 if (q.flags.q.buffer) {
1191 if (!state->has_shader_storage_buffer_objects()) {
1192 _mesa_glsl_error(locp, state,
1193 "#version 430 / GL_ARB_shader_storage_buffer_object "
1194 "required for defining shader storage blocks");
1195 } else if (state->ARB_shader_storage_buffer_object_warn) {
1196 _mesa_glsl_warning(locp, state,
1197 "#version 430 / GL_ARB_shader_storage_buffer_object "
1198 "required for defining shader storage blocks");
1199 }
1200 } else if (q.flags.q.uniform) {
1201 if (!state->has_uniform_buffer_objects()) {
1202 _mesa_glsl_error(locp, state,
1203 "#version 140 / GL_ARB_uniform_buffer_object "
1204 "required for defining uniform blocks");
1205 } else if (state->ARB_uniform_buffer_object_warn) {
1206 _mesa_glsl_warning(locp, state,
1207 "#version 140 / GL_ARB_uniform_buffer_object "
1208 "required for defining uniform blocks");
1209 }
1210 } else {
1211 if (!state->has_shader_io_blocks()) {
1212 if (state->es_shader) {
1213 _mesa_glsl_error(locp, state,
1214 "GL_OES_shader_io_blocks or #version 320 "
1215 "required for using interface blocks");
1216 } else {
1217 _mesa_glsl_error(locp, state,
1218 "#version 150 required for using "
1219 "interface blocks");
1220 }
1221 }
1222 }
1223
1224 /* From the GLSL 1.50.11 spec, section 4.3.7 ("Interface Blocks"):
1225 * "It is illegal to have an input block in a vertex shader
1226 * or an output block in a fragment shader"
1227 */
1228 if ((state->stage == MESA_SHADER_VERTEX) && q.flags.q.in) {
1229 _mesa_glsl_error(locp, state,
1230 "`in' interface block is not allowed for "
1231 "a vertex shader");
1232 } else if ((state->stage == MESA_SHADER_FRAGMENT) && q.flags.q.out) {
1233 _mesa_glsl_error(locp, state,
1234 "`out' interface block is not allowed for "
1235 "a fragment shader");
1236 }
1237
1238 /* Since block arrays require names, and both features are added in
1239 * the same language versions, we don't have to explicitly
1240 * version-check both things.
1241 */
1242 if (block->instance_name != NULL) {
1243 state->check_version(150, 300, locp, "interface blocks with "
1244 "an instance name are not allowed");
1245 }
1246
1247 ast_type_qualifier::bitset_t interface_type_mask;
1248 struct ast_type_qualifier temp_type_qualifier;
1249
1250 /* Get a bitmask containing only the in/out/uniform/buffer
1251 * flags, allowing us to ignore other irrelevant flags like
1252 * interpolation qualifiers.
1253 */
1254 temp_type_qualifier.flags.i = 0;
1255 temp_type_qualifier.flags.q.uniform = true;
1256 temp_type_qualifier.flags.q.in = true;
1257 temp_type_qualifier.flags.q.out = true;
1258 temp_type_qualifier.flags.q.buffer = true;
1259 temp_type_qualifier.flags.q.patch = true;
1260 interface_type_mask = temp_type_qualifier.flags.i;
1261
1262 /* Get the block's interface qualifier. The interface_qualifier
1263 * production rule guarantees that only one bit will be set (and
1264 * it will be in/out/uniform).
1265 */
1266 ast_type_qualifier::bitset_t block_interface_qualifier = q.flags.i;
1267
1268 block->default_layout.flags.i |= block_interface_qualifier;
1269
1270 if (state->stage == MESA_SHADER_GEOMETRY &&
1271 state->has_explicit_attrib_stream() &&
1272 block->default_layout.flags.q.out) {
1273 /* Assign global layout's stream value. */
1274 block->default_layout.flags.q.stream = 1;
1275 block->default_layout.flags.q.explicit_stream = 0;
1276 block->default_layout.stream = state->out_qualifier->stream;
1277 }
1278
1279 if (state->has_enhanced_layouts() && block->default_layout.flags.q.out &&
1280 state->exts->ARB_transform_feedback3) {
1281 /* Assign global layout's xfb_buffer value. */
1282 block->default_layout.flags.q.xfb_buffer = 1;
1283 block->default_layout.flags.q.explicit_xfb_buffer = 0;
1284 block->default_layout.xfb_buffer = state->out_qualifier->xfb_buffer;
1285 }
1286
1287 foreach_list_typed (ast_declarator_list, member, link, &block->declarations) {
1288 ast_type_qualifier& qualifier = member->type->qualifier;
1289 if ((qualifier.flags.i & interface_type_mask) == 0) {
1290 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1291 * "If no optional qualifier is used in a member declaration, the
1292 * qualifier of the variable is just in, out, or uniform as declared
1293 * by interface-qualifier."
1294 */
1295 qualifier.flags.i |= block_interface_qualifier;
1296 } else if ((qualifier.flags.i & interface_type_mask) !=
1297 block_interface_qualifier) {
1298 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1299 * "If optional qualifiers are used, they can include interpolation
1300 * and storage qualifiers and they must declare an input, output,
1301 * or uniform variable consistent with the interface qualifier of
1302 * the block."
1303 */
1304 _mesa_glsl_error(locp, state,
1305 "uniform/in/out qualifier on "
1306 "interface block member does not match "
1307 "the interface block");
1308 }
1309
1310 if (!(q.flags.q.in || q.flags.q.out) && qualifier.flags.q.invariant)
1311 _mesa_glsl_error(locp, state,
1312 "invariant qualifiers can be used only "
1313 "in interface block members for shader "
1314 "inputs or outputs");
1315 }
1316 }
1317
1318 static void
_mesa_ast_type_qualifier_print(const struct ast_type_qualifier * q)1319 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier *q)
1320 {
1321 if (q->is_subroutine_decl())
1322 printf("subroutine ");
1323
1324 if (q->subroutine_list) {
1325 printf("subroutine (");
1326 q->subroutine_list->print();
1327 printf(")");
1328 }
1329
1330 if (q->flags.q.constant)
1331 printf("const ");
1332
1333 if (q->flags.q.invariant)
1334 printf("invariant ");
1335
1336 if (q->flags.q.attribute)
1337 printf("attribute ");
1338
1339 if (q->flags.q.varying)
1340 printf("varying ");
1341
1342 if (q->flags.q.in && q->flags.q.out)
1343 printf("inout ");
1344 else {
1345 if (q->flags.q.in)
1346 printf("in ");
1347
1348 if (q->flags.q.out)
1349 printf("out ");
1350 }
1351
1352 if (q->flags.q.centroid)
1353 printf("centroid ");
1354 if (q->flags.q.sample)
1355 printf("sample ");
1356 if (q->flags.q.patch)
1357 printf("patch ");
1358 if (q->flags.q.uniform)
1359 printf("uniform ");
1360 if (q->flags.q.buffer)
1361 printf("buffer ");
1362 if (q->flags.q.smooth)
1363 printf("smooth ");
1364 if (q->flags.q.flat)
1365 printf("flat ");
1366 if (q->flags.q.noperspective)
1367 printf("noperspective ");
1368 }
1369
1370
1371 void
print(void) const1372 ast_node::print(void) const
1373 {
1374 printf("unhandled node ");
1375 }
1376
1377
ast_node(void)1378 ast_node::ast_node(void)
1379 {
1380 this->location.path = NULL;
1381 this->location.source = 0;
1382 this->location.first_line = 0;
1383 this->location.first_column = 0;
1384 this->location.last_line = 0;
1385 this->location.last_column = 0;
1386 }
1387
1388
1389 static void
ast_opt_array_dimensions_print(const ast_array_specifier * array_specifier)1390 ast_opt_array_dimensions_print(const ast_array_specifier *array_specifier)
1391 {
1392 if (array_specifier)
1393 array_specifier->print();
1394 }
1395
1396
1397 void
print(void) const1398 ast_compound_statement::print(void) const
1399 {
1400 printf("{\n");
1401
1402 foreach_list_typed(ast_node, ast, link, &this->statements) {
1403 ast->print();
1404 }
1405
1406 printf("}\n");
1407 }
1408
1409
ast_compound_statement(int new_scope,ast_node * statements)1410 ast_compound_statement::ast_compound_statement(int new_scope,
1411 ast_node *statements)
1412 {
1413 this->new_scope = new_scope;
1414
1415 if (statements != NULL) {
1416 this->statements.push_degenerate_list_at_head(&statements->link);
1417 }
1418 }
1419
1420
1421 void
print(void) const1422 ast_expression::print(void) const
1423 {
1424 switch (oper) {
1425 case ast_assign:
1426 case ast_mul_assign:
1427 case ast_div_assign:
1428 case ast_mod_assign:
1429 case ast_add_assign:
1430 case ast_sub_assign:
1431 case ast_ls_assign:
1432 case ast_rs_assign:
1433 case ast_and_assign:
1434 case ast_xor_assign:
1435 case ast_or_assign:
1436 subexpressions[0]->print();
1437 printf("%s ", operator_string(oper));
1438 subexpressions[1]->print();
1439 break;
1440
1441 case ast_field_selection:
1442 subexpressions[0]->print();
1443 printf(". %s ", primary_expression.identifier);
1444 break;
1445
1446 case ast_plus:
1447 case ast_neg:
1448 case ast_bit_not:
1449 case ast_logic_not:
1450 case ast_pre_inc:
1451 case ast_pre_dec:
1452 printf("%s ", operator_string(oper));
1453 subexpressions[0]->print();
1454 break;
1455
1456 case ast_post_inc:
1457 case ast_post_dec:
1458 subexpressions[0]->print();
1459 printf("%s ", operator_string(oper));
1460 break;
1461
1462 case ast_conditional:
1463 subexpressions[0]->print();
1464 printf("? ");
1465 subexpressions[1]->print();
1466 printf(": ");
1467 subexpressions[2]->print();
1468 break;
1469
1470 case ast_array_index:
1471 subexpressions[0]->print();
1472 printf("[ ");
1473 subexpressions[1]->print();
1474 printf("] ");
1475 break;
1476
1477 case ast_function_call: {
1478 subexpressions[0]->print();
1479 printf("( ");
1480
1481 foreach_list_typed (ast_node, ast, link, &this->expressions) {
1482 if (&ast->link != this->expressions.get_head())
1483 printf(", ");
1484
1485 ast->print();
1486 }
1487
1488 printf(") ");
1489 break;
1490 }
1491
1492 case ast_identifier:
1493 printf("%s ", primary_expression.identifier);
1494 break;
1495
1496 case ast_int_constant:
1497 printf("%d ", primary_expression.int_constant);
1498 break;
1499
1500 case ast_uint_constant:
1501 printf("%u ", primary_expression.uint_constant);
1502 break;
1503
1504 case ast_float_constant:
1505 printf("%f ", primary_expression.float_constant);
1506 break;
1507
1508 case ast_double_constant:
1509 printf("%f ", primary_expression.double_constant);
1510 break;
1511
1512 case ast_int64_constant:
1513 printf("%" PRId64 " ", primary_expression.int64_constant);
1514 break;
1515
1516 case ast_uint64_constant:
1517 printf("%" PRIu64 " ", primary_expression.uint64_constant);
1518 break;
1519
1520 case ast_bool_constant:
1521 printf("%s ",
1522 primary_expression.bool_constant
1523 ? "true" : "false");
1524 break;
1525
1526 case ast_sequence: {
1527 printf("( ");
1528 foreach_list_typed (ast_node, ast, link, & this->expressions) {
1529 if (&ast->link != this->expressions.get_head())
1530 printf(", ");
1531
1532 ast->print();
1533 }
1534 printf(") ");
1535 break;
1536 }
1537
1538 case ast_aggregate: {
1539 printf("{ ");
1540 foreach_list_typed (ast_node, ast, link, & this->expressions) {
1541 if (&ast->link != this->expressions.get_head())
1542 printf(", ");
1543
1544 ast->print();
1545 }
1546 printf("} ");
1547 break;
1548 }
1549
1550 default:
1551 assert(0);
1552 break;
1553 }
1554 }
1555
ast_expression(int oper,ast_expression * ex0,ast_expression * ex1,ast_expression * ex2)1556 ast_expression::ast_expression(int oper,
1557 ast_expression *ex0,
1558 ast_expression *ex1,
1559 ast_expression *ex2) :
1560 primary_expression()
1561 {
1562 this->oper = ast_operators(oper);
1563 this->subexpressions[0] = ex0;
1564 this->subexpressions[1] = ex1;
1565 this->subexpressions[2] = ex2;
1566 this->non_lvalue_description = NULL;
1567 this->is_lhs = false;
1568 }
1569
1570
1571 void
print(void) const1572 ast_expression_statement::print(void) const
1573 {
1574 if (expression)
1575 expression->print();
1576
1577 printf("; ");
1578 }
1579
1580
ast_expression_statement(ast_expression * ex)1581 ast_expression_statement::ast_expression_statement(ast_expression *ex) :
1582 expression(ex)
1583 {
1584 /* empty */
1585 }
1586
1587
1588 void
print(void) const1589 ast_function::print(void) const
1590 {
1591 return_type->print();
1592 printf(" %s (", identifier);
1593
1594 foreach_list_typed(ast_node, ast, link, & this->parameters) {
1595 ast->print();
1596 }
1597
1598 printf(")");
1599 }
1600
1601
ast_function(void)1602 ast_function::ast_function(void)
1603 : return_type(NULL), identifier(NULL), is_definition(false),
1604 signature(NULL)
1605 {
1606 /* empty */
1607 }
1608
1609
1610 void
print(void) const1611 ast_fully_specified_type::print(void) const
1612 {
1613 _mesa_ast_type_qualifier_print(& qualifier);
1614 specifier->print();
1615 }
1616
1617
1618 void
print(void) const1619 ast_parameter_declarator::print(void) const
1620 {
1621 type->print();
1622 if (identifier)
1623 printf("%s ", identifier);
1624 ast_opt_array_dimensions_print(array_specifier);
1625 }
1626
1627
1628 void
print(void) const1629 ast_function_definition::print(void) const
1630 {
1631 prototype->print();
1632 body->print();
1633 }
1634
1635
1636 void
print(void) const1637 ast_declaration::print(void) const
1638 {
1639 printf("%s ", identifier);
1640 ast_opt_array_dimensions_print(array_specifier);
1641
1642 if (initializer) {
1643 printf("= ");
1644 initializer->print();
1645 }
1646 }
1647
1648
ast_declaration(const char * identifier,ast_array_specifier * array_specifier,ast_expression * initializer)1649 ast_declaration::ast_declaration(const char *identifier,
1650 ast_array_specifier *array_specifier,
1651 ast_expression *initializer)
1652 {
1653 this->identifier = identifier;
1654 this->array_specifier = array_specifier;
1655 this->initializer = initializer;
1656 }
1657
1658
1659 void
print(void) const1660 ast_declarator_list::print(void) const
1661 {
1662 assert(type || invariant);
1663
1664 if (type)
1665 type->print();
1666 else if (invariant)
1667 printf("invariant ");
1668 else
1669 printf("precise ");
1670
1671 foreach_list_typed (ast_node, ast, link, & this->declarations) {
1672 if (&ast->link != this->declarations.get_head())
1673 printf(", ");
1674
1675 ast->print();
1676 }
1677
1678 printf("; ");
1679 }
1680
1681
ast_declarator_list(ast_fully_specified_type * type)1682 ast_declarator_list::ast_declarator_list(ast_fully_specified_type *type)
1683 {
1684 this->type = type;
1685 this->invariant = false;
1686 this->precise = false;
1687 }
1688
1689 void
print(void) const1690 ast_jump_statement::print(void) const
1691 {
1692 switch (mode) {
1693 case ast_continue:
1694 printf("continue; ");
1695 break;
1696 case ast_break:
1697 printf("break; ");
1698 break;
1699 case ast_return:
1700 printf("return ");
1701 if (opt_return_value)
1702 opt_return_value->print();
1703
1704 printf("; ");
1705 break;
1706 case ast_discard:
1707 printf("discard; ");
1708 break;
1709 }
1710 }
1711
1712
ast_jump_statement(int mode,ast_expression * return_value)1713 ast_jump_statement::ast_jump_statement(int mode, ast_expression *return_value)
1714 : opt_return_value(NULL)
1715 {
1716 this->mode = ast_jump_modes(mode);
1717
1718 if (mode == ast_return)
1719 opt_return_value = return_value;
1720 }
1721
1722
1723 void
print(void) const1724 ast_demote_statement::print(void) const
1725 {
1726 printf("demote; ");
1727 }
1728
1729
1730 void
print(void) const1731 ast_selection_statement::print(void) const
1732 {
1733 printf("if ( ");
1734 condition->print();
1735 printf(") ");
1736
1737 then_statement->print();
1738
1739 if (else_statement) {
1740 printf("else ");
1741 else_statement->print();
1742 }
1743 }
1744
1745
ast_selection_statement(ast_expression * condition,ast_node * then_statement,ast_node * else_statement)1746 ast_selection_statement::ast_selection_statement(ast_expression *condition,
1747 ast_node *then_statement,
1748 ast_node *else_statement)
1749 {
1750 this->condition = condition;
1751 this->then_statement = then_statement;
1752 this->else_statement = else_statement;
1753 }
1754
1755
1756 void
print(void) const1757 ast_switch_statement::print(void) const
1758 {
1759 printf("switch ( ");
1760 test_expression->print();
1761 printf(") ");
1762
1763 body->print();
1764 }
1765
1766
ast_switch_statement(ast_expression * test_expression,ast_node * body)1767 ast_switch_statement::ast_switch_statement(ast_expression *test_expression,
1768 ast_node *body)
1769 {
1770 this->test_expression = test_expression;
1771 this->body = body;
1772 this->test_val = NULL;
1773 }
1774
1775
1776 void
print(void) const1777 ast_switch_body::print(void) const
1778 {
1779 printf("{\n");
1780 if (stmts != NULL) {
1781 stmts->print();
1782 }
1783 printf("}\n");
1784 }
1785
1786
ast_switch_body(ast_case_statement_list * stmts)1787 ast_switch_body::ast_switch_body(ast_case_statement_list *stmts)
1788 {
1789 this->stmts = stmts;
1790 }
1791
1792
print(void) const1793 void ast_case_label::print(void) const
1794 {
1795 if (test_value != NULL) {
1796 printf("case ");
1797 test_value->print();
1798 printf(": ");
1799 } else {
1800 printf("default: ");
1801 }
1802 }
1803
1804
ast_case_label(ast_expression * test_value)1805 ast_case_label::ast_case_label(ast_expression *test_value)
1806 {
1807 this->test_value = test_value;
1808 }
1809
1810
print(void) const1811 void ast_case_label_list::print(void) const
1812 {
1813 foreach_list_typed(ast_node, ast, link, & this->labels) {
1814 ast->print();
1815 }
1816 printf("\n");
1817 }
1818
1819
ast_case_label_list(void)1820 ast_case_label_list::ast_case_label_list(void)
1821 {
1822 }
1823
1824
print(void) const1825 void ast_case_statement::print(void) const
1826 {
1827 labels->print();
1828 foreach_list_typed(ast_node, ast, link, & this->stmts) {
1829 ast->print();
1830 printf("\n");
1831 }
1832 }
1833
1834
ast_case_statement(ast_case_label_list * labels)1835 ast_case_statement::ast_case_statement(ast_case_label_list *labels)
1836 {
1837 this->labels = labels;
1838 }
1839
1840
print(void) const1841 void ast_case_statement_list::print(void) const
1842 {
1843 foreach_list_typed(ast_node, ast, link, & this->cases) {
1844 ast->print();
1845 }
1846 }
1847
1848
ast_case_statement_list(void)1849 ast_case_statement_list::ast_case_statement_list(void)
1850 {
1851 }
1852
1853
1854 void
print(void) const1855 ast_iteration_statement::print(void) const
1856 {
1857 switch (mode) {
1858 case ast_for:
1859 printf("for( ");
1860 if (init_statement)
1861 init_statement->print();
1862 printf("; ");
1863
1864 if (condition)
1865 condition->print();
1866 printf("; ");
1867
1868 if (rest_expression)
1869 rest_expression->print();
1870 printf(") ");
1871
1872 body->print();
1873 break;
1874
1875 case ast_while:
1876 printf("while ( ");
1877 if (condition)
1878 condition->print();
1879 printf(") ");
1880 body->print();
1881 break;
1882
1883 case ast_do_while:
1884 printf("do ");
1885 body->print();
1886 printf("while ( ");
1887 if (condition)
1888 condition->print();
1889 printf("); ");
1890 break;
1891 }
1892 }
1893
1894
ast_iteration_statement(int mode,ast_node * init,ast_node * condition,ast_expression * rest_expression,ast_node * body)1895 ast_iteration_statement::ast_iteration_statement(int mode,
1896 ast_node *init,
1897 ast_node *condition,
1898 ast_expression *rest_expression,
1899 ast_node *body)
1900 {
1901 this->mode = ast_iteration_modes(mode);
1902 this->init_statement = init;
1903 this->condition = condition;
1904 this->rest_expression = rest_expression;
1905 this->body = body;
1906 }
1907
1908
1909 void
print(void) const1910 ast_struct_specifier::print(void) const
1911 {
1912 printf("struct %s { ", name);
1913 foreach_list_typed(ast_node, ast, link, &this->declarations) {
1914 ast->print();
1915 }
1916 printf("} ");
1917 }
1918
1919
ast_struct_specifier(const char * identifier,ast_declarator_list * declarator_list)1920 ast_struct_specifier::ast_struct_specifier(const char *identifier,
1921 ast_declarator_list *declarator_list)
1922 : name(identifier), layout(NULL), declarations(), is_declaration(true),
1923 type(NULL)
1924 {
1925 this->declarations.push_degenerate_list_at_head(&declarator_list->link);
1926 }
1927
print(void) const1928 void ast_subroutine_list::print(void) const
1929 {
1930 foreach_list_typed (ast_node, ast, link, & this->declarations) {
1931 if (&ast->link != this->declarations.get_head())
1932 printf(", ");
1933 ast->print();
1934 }
1935 }
1936
1937 static void
set_shader_inout_layout(struct gl_shader * shader,struct _mesa_glsl_parse_state * state)1938 set_shader_inout_layout(struct gl_shader *shader,
1939 struct _mesa_glsl_parse_state *state)
1940 {
1941 /* Should have been prevented by the parser. */
1942 if (shader->Stage != MESA_SHADER_GEOMETRY &&
1943 shader->Stage != MESA_SHADER_TESS_EVAL &&
1944 shader->Stage != MESA_SHADER_COMPUTE) {
1945 assert(!state->in_qualifier->flags.i);
1946 }
1947
1948 if (shader->Stage != MESA_SHADER_COMPUTE) {
1949 /* Should have been prevented by the parser. */
1950 assert(!state->cs_input_local_size_specified);
1951 assert(!state->cs_input_local_size_variable_specified);
1952 assert(state->cs_derivative_group == DERIVATIVE_GROUP_NONE);
1953 }
1954
1955 if (shader->Stage != MESA_SHADER_FRAGMENT) {
1956 /* Should have been prevented by the parser. */
1957 assert(!state->fs_uses_gl_fragcoord);
1958 assert(!state->fs_redeclares_gl_fragcoord);
1959 assert(!state->fs_pixel_center_integer);
1960 assert(!state->fs_origin_upper_left);
1961 assert(!state->fs_early_fragment_tests);
1962 assert(!state->fs_inner_coverage);
1963 assert(!state->fs_post_depth_coverage);
1964 assert(!state->fs_pixel_interlock_ordered);
1965 assert(!state->fs_pixel_interlock_unordered);
1966 assert(!state->fs_sample_interlock_ordered);
1967 assert(!state->fs_sample_interlock_unordered);
1968 }
1969
1970 for (unsigned i = 0; i < MAX_FEEDBACK_BUFFERS; i++) {
1971 if (state->out_qualifier->out_xfb_stride[i]) {
1972 unsigned xfb_stride;
1973 if (state->out_qualifier->out_xfb_stride[i]->
1974 process_qualifier_constant(state, "xfb_stride", &xfb_stride,
1975 true)) {
1976 shader->TransformFeedbackBufferStride[i] = xfb_stride;
1977 }
1978 }
1979 }
1980
1981 switch (shader->Stage) {
1982 case MESA_SHADER_TESS_CTRL:
1983 shader->info.TessCtrl.VerticesOut = 0;
1984 if (state->tcs_output_vertices_specified) {
1985 unsigned vertices;
1986 if (state->out_qualifier->vertices->
1987 process_qualifier_constant(state, "vertices", &vertices,
1988 false)) {
1989
1990 YYLTYPE loc = state->out_qualifier->vertices->get_location();
1991 if (vertices > state->Const.MaxPatchVertices) {
1992 _mesa_glsl_error(&loc, state, "vertices (%d) exceeds "
1993 "GL_MAX_PATCH_VERTICES", vertices);
1994 }
1995 shader->info.TessCtrl.VerticesOut = vertices;
1996 }
1997 }
1998 break;
1999 case MESA_SHADER_TESS_EVAL:
2000 shader->info.TessEval._PrimitiveMode = TESS_PRIMITIVE_UNSPECIFIED;
2001 if (state->in_qualifier->flags.q.prim_type) {
2002 switch (state->in_qualifier->prim_type) {
2003 case GL_TRIANGLES:
2004 shader->info.TessEval._PrimitiveMode = TESS_PRIMITIVE_TRIANGLES;
2005 break;
2006 case GL_QUADS:
2007 shader->info.TessEval._PrimitiveMode = TESS_PRIMITIVE_QUADS;
2008 break;
2009 case GL_ISOLINES:
2010 shader->info.TessEval._PrimitiveMode = TESS_PRIMITIVE_ISOLINES;
2011 break;
2012 }
2013 }
2014
2015 shader->info.TessEval.Spacing = TESS_SPACING_UNSPECIFIED;
2016 if (state->in_qualifier->flags.q.vertex_spacing)
2017 shader->info.TessEval.Spacing = state->in_qualifier->vertex_spacing;
2018
2019 shader->info.TessEval.VertexOrder = 0;
2020 if (state->in_qualifier->flags.q.ordering)
2021 shader->info.TessEval.VertexOrder = state->in_qualifier->ordering;
2022
2023 shader->info.TessEval.PointMode = -1;
2024 if (state->in_qualifier->flags.q.point_mode)
2025 shader->info.TessEval.PointMode = state->in_qualifier->point_mode;
2026 break;
2027 case MESA_SHADER_GEOMETRY:
2028 shader->info.Geom.VerticesOut = -1;
2029 if (state->out_qualifier->flags.q.max_vertices) {
2030 unsigned qual_max_vertices;
2031 if (state->out_qualifier->max_vertices->
2032 process_qualifier_constant(state, "max_vertices",
2033 &qual_max_vertices, true)) {
2034
2035 if (qual_max_vertices > state->Const.MaxGeometryOutputVertices) {
2036 YYLTYPE loc = state->out_qualifier->max_vertices->get_location();
2037 _mesa_glsl_error(&loc, state,
2038 "maximum output vertices (%d) exceeds "
2039 "GL_MAX_GEOMETRY_OUTPUT_VERTICES",
2040 qual_max_vertices);
2041 }
2042 shader->info.Geom.VerticesOut = qual_max_vertices;
2043 }
2044 }
2045
2046 if (state->gs_input_prim_type_specified) {
2047 shader->info.Geom.InputType =
2048 gl_to_mesa_prim(state->in_qualifier->prim_type);
2049 } else {
2050 shader->info.Geom.InputType = MESA_PRIM_UNKNOWN;
2051 }
2052
2053 if (state->out_qualifier->flags.q.prim_type) {
2054 shader->info.Geom.OutputType =
2055 gl_to_mesa_prim(state->out_qualifier->prim_type);
2056 } else {
2057 shader->info.Geom.OutputType = MESA_PRIM_UNKNOWN;
2058 }
2059
2060 shader->info.Geom.Invocations = 0;
2061 if (state->in_qualifier->flags.q.invocations) {
2062 unsigned invocations;
2063 if (state->in_qualifier->invocations->
2064 process_qualifier_constant(state, "invocations",
2065 &invocations, false)) {
2066
2067 YYLTYPE loc = state->in_qualifier->invocations->get_location();
2068 if (invocations > state->Const.MaxGeometryShaderInvocations) {
2069 _mesa_glsl_error(&loc, state,
2070 "invocations (%d) exceeds "
2071 "GL_MAX_GEOMETRY_SHADER_INVOCATIONS",
2072 invocations);
2073 }
2074 shader->info.Geom.Invocations = invocations;
2075 }
2076 }
2077 break;
2078
2079 case MESA_SHADER_COMPUTE:
2080 if (state->cs_input_local_size_specified) {
2081 for (int i = 0; i < 3; i++)
2082 shader->info.Comp.LocalSize[i] = state->cs_input_local_size[i];
2083 } else {
2084 for (int i = 0; i < 3; i++)
2085 shader->info.Comp.LocalSize[i] = 0;
2086 }
2087
2088 shader->info.Comp.LocalSizeVariable =
2089 state->cs_input_local_size_variable_specified;
2090
2091 shader->info.Comp.DerivativeGroup = state->cs_derivative_group;
2092
2093 if (state->NV_compute_shader_derivatives_enable) {
2094 /* We allow multiple cs_input_layout nodes, but do not store them in
2095 * a convenient place, so for now live with an empty location error.
2096 */
2097 YYLTYPE loc = {0};
2098 if (shader->info.Comp.DerivativeGroup == DERIVATIVE_GROUP_QUADS) {
2099 if (shader->info.Comp.LocalSize[0] % 2 != 0) {
2100 _mesa_glsl_error(&loc, state, "derivative_group_quadsNV must be used with a "
2101 "local group size whose first dimension "
2102 "is a multiple of 2\n");
2103 }
2104 if (shader->info.Comp.LocalSize[1] % 2 != 0) {
2105 _mesa_glsl_error(&loc, state, "derivative_group_quadsNV must be used with a "
2106 "local group size whose second dimension "
2107 "is a multiple of 2\n");
2108 }
2109 } else if (shader->info.Comp.DerivativeGroup == DERIVATIVE_GROUP_LINEAR) {
2110 if ((shader->info.Comp.LocalSize[0] *
2111 shader->info.Comp.LocalSize[1] *
2112 shader->info.Comp.LocalSize[2]) % 4 != 0) {
2113 _mesa_glsl_error(&loc, state, "derivative_group_linearNV must be used with a "
2114 "local group size whose total number of invocations "
2115 "is a multiple of 4\n");
2116 }
2117 }
2118 }
2119
2120 break;
2121
2122 case MESA_SHADER_FRAGMENT:
2123 shader->redeclares_gl_fragcoord = state->fs_redeclares_gl_fragcoord;
2124 shader->uses_gl_fragcoord = state->fs_uses_gl_fragcoord;
2125 shader->pixel_center_integer = state->fs_pixel_center_integer;
2126 shader->origin_upper_left = state->fs_origin_upper_left;
2127 shader->ARB_fragment_coord_conventions_enable =
2128 state->ARB_fragment_coord_conventions_enable;
2129 shader->EarlyFragmentTests = state->fs_early_fragment_tests;
2130 shader->InnerCoverage = state->fs_inner_coverage;
2131 shader->PostDepthCoverage = state->fs_post_depth_coverage;
2132 shader->PixelInterlockOrdered = state->fs_pixel_interlock_ordered;
2133 shader->PixelInterlockUnordered = state->fs_pixel_interlock_unordered;
2134 shader->SampleInterlockOrdered = state->fs_sample_interlock_ordered;
2135 shader->SampleInterlockUnordered = state->fs_sample_interlock_unordered;
2136 shader->BlendSupport = state->fs_blend_support;
2137 break;
2138
2139 default:
2140 /* Nothing to do. */
2141 break;
2142 }
2143
2144 shader->bindless_sampler = state->bindless_sampler_specified;
2145 shader->bindless_image = state->bindless_image_specified;
2146 shader->bound_sampler = state->bound_sampler_specified;
2147 shader->bound_image = state->bound_image_specified;
2148 shader->redeclares_gl_layer = state->redeclares_gl_layer;
2149 shader->layer_viewport_relative = state->layer_viewport_relative;
2150 }
2151
2152 /* src can be NULL if only the symbols found in the exec_list should be
2153 * copied
2154 */
2155 void
_mesa_glsl_copy_symbols_from_table(struct exec_list * shader_ir,struct glsl_symbol_table * src,struct glsl_symbol_table * dest)2156 _mesa_glsl_copy_symbols_from_table(struct exec_list *shader_ir,
2157 struct glsl_symbol_table *src,
2158 struct glsl_symbol_table *dest)
2159 {
2160 foreach_in_list (ir_instruction, ir, shader_ir) {
2161 switch (ir->ir_type) {
2162 case ir_type_function:
2163 dest->add_function((ir_function *) ir);
2164 break;
2165 case ir_type_variable: {
2166 ir_variable *const var = (ir_variable *) ir;
2167
2168 if (var->data.mode != ir_var_temporary)
2169 dest->add_variable(var);
2170 break;
2171 }
2172 default:
2173 break;
2174 }
2175 }
2176
2177 if (src != NULL) {
2178 /* Explicitly copy the gl_PerVertex interface definitions because these
2179 * are needed to check they are the same during the interstage link.
2180 * They can’t necessarily be found via the exec_list because the members
2181 * might not be referenced. The GL spec still requires that they match
2182 * in that case.
2183 */
2184 const glsl_type *iface =
2185 src->get_interface("gl_PerVertex", ir_var_shader_in);
2186 if (iface)
2187 dest->add_interface(glsl_get_type_name(iface), iface, ir_var_shader_in);
2188
2189 iface = src->get_interface("gl_PerVertex", ir_var_shader_out);
2190 if (iface)
2191 dest->add_interface(glsl_get_type_name(iface), iface, ir_var_shader_out);
2192 }
2193 }
2194
2195 extern "C" {
2196
2197 static void
assign_subroutine_indexes(struct _mesa_glsl_parse_state * state)2198 assign_subroutine_indexes(struct _mesa_glsl_parse_state *state)
2199 {
2200 int j, k;
2201 int index = 0;
2202
2203 for (j = 0; j < state->num_subroutines; j++) {
2204 while (state->subroutines[j]->subroutine_index == -1) {
2205 for (k = 0; k < state->num_subroutines; k++) {
2206 if (state->subroutines[k]->subroutine_index == index)
2207 break;
2208 else if (k == state->num_subroutines - 1) {
2209 state->subroutines[j]->subroutine_index = index;
2210 }
2211 }
2212 index++;
2213 }
2214 }
2215 }
2216
2217 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)2218 add_builtin_defines(struct _mesa_glsl_parse_state *state,
2219 void (*add_builtin_define)(struct glcpp_parser *, const char *, int),
2220 struct glcpp_parser *data,
2221 unsigned version,
2222 bool es)
2223 {
2224 unsigned gl_version = state->exts->Version;
2225 gl_api api = state->api;
2226
2227 if (gl_version != 0xff) {
2228 unsigned i;
2229 for (i = 0; i < state->num_supported_versions; i++) {
2230 if (state->supported_versions[i].ver == version &&
2231 state->supported_versions[i].es == es) {
2232 gl_version = state->supported_versions[i].gl_ver;
2233 break;
2234 }
2235 }
2236
2237 if (i == state->num_supported_versions)
2238 return;
2239 }
2240
2241 if (es)
2242 api = API_OPENGLES2;
2243
2244 for (unsigned i = 0;
2245 i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
2246 const _mesa_glsl_extension *extension
2247 = &_mesa_glsl_supported_extensions[i];
2248 if (extension->compatible_with_state(state, api, gl_version)) {
2249 add_builtin_define(data, extension->name, 1);
2250 }
2251 }
2252 }
2253
2254 /* Implements parsing checks that we can't do during parsing */
2255 static void
do_late_parsing_checks(struct _mesa_glsl_parse_state * state)2256 do_late_parsing_checks(struct _mesa_glsl_parse_state *state)
2257 {
2258 if (state->stage == MESA_SHADER_COMPUTE && !state->has_compute_shader()) {
2259 YYLTYPE loc;
2260 memset(&loc, 0, sizeof(loc));
2261 _mesa_glsl_error(&loc, state, "Compute shaders require "
2262 "GLSL 4.30 or GLSL ES 3.10");
2263 }
2264 }
2265
2266 static void
opt_shader_and_create_symbol_table(const struct gl_constants * consts,const struct gl_extensions * exts,struct glsl_symbol_table * source_symbols,struct gl_shader * shader)2267 opt_shader_and_create_symbol_table(const struct gl_constants *consts,
2268 const struct gl_extensions *exts,
2269 struct glsl_symbol_table *source_symbols,
2270 struct gl_shader *shader)
2271 {
2272 assert(shader->CompileStatus != COMPILE_FAILURE &&
2273 !shader->ir->is_empty());
2274
2275 const struct gl_shader_compiler_options *options =
2276 &consts->ShaderCompilerOptions[shader->Stage];
2277
2278 /* Do some optimization at compile time to reduce shader IR size
2279 * and reduce later work if the same shader is linked multiple times.
2280 *
2281 * Run it just once, since NIR will do the real optimization.
2282 */
2283 do_common_optimization(shader->ir, false, options, consts->NativeIntegers);
2284
2285 validate_ir_tree(shader->ir);
2286
2287 enum ir_variable_mode other;
2288 switch (shader->Stage) {
2289 case MESA_SHADER_VERTEX:
2290 other = ir_var_shader_in;
2291 break;
2292 case MESA_SHADER_FRAGMENT:
2293 other = ir_var_shader_out;
2294 break;
2295 default:
2296 /* Something invalid to ensure optimize_dead_builtin_uniforms
2297 * doesn't remove anything other than uniforms or constants.
2298 */
2299 other = ir_var_mode_count;
2300 break;
2301 }
2302
2303 optimize_dead_builtin_variables(shader->ir, other);
2304
2305 lower_vector_derefs(shader);
2306
2307 lower_packing_builtins(shader->ir, exts->ARB_shading_language_packing,
2308 exts->ARB_gpu_shader5,
2309 consts->GLSLHasHalfFloatPacking);
2310 do_mat_op_to_vec(shader->ir);
2311
2312 lower_instructions(shader->ir, exts->ARB_gpu_shader5);
2313
2314 do_vec_index_to_cond_assign(shader->ir);
2315
2316 validate_ir_tree(shader->ir);
2317
2318 /* Retain any live IR, but trash the rest. */
2319 reparent_ir(shader->ir, shader->ir);
2320
2321 /* Destroy the symbol table. Create a new symbol table that contains only
2322 * the variables and functions that still exist in the IR. The symbol
2323 * table will be used later during linking.
2324 *
2325 * There must NOT be any freed objects still referenced by the symbol
2326 * table. That could cause the linker to dereference freed memory.
2327 *
2328 * We don't have to worry about types or interface-types here because those
2329 * are fly-weights that are looked up by glsl_type.
2330 */
2331 _mesa_glsl_copy_symbols_from_table(shader->ir, source_symbols,
2332 shader->symbols);
2333 }
2334
2335 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)2336 can_skip_compile(struct gl_context *ctx, struct gl_shader *shader,
2337 const char *source, const blake3_hash source_blake3,
2338 bool force_recompile, bool source_has_shader_include)
2339 {
2340 if (!force_recompile) {
2341 if (ctx->Cache) {
2342 char buf[41];
2343 disk_cache_compute_key(ctx->Cache, source, strlen(source),
2344 shader->disk_cache_sha1);
2345 if (disk_cache_has_key(ctx->Cache, shader->disk_cache_sha1)) {
2346 /* We've seen this shader before and know it compiles */
2347 if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
2348 _mesa_sha1_format(buf, shader->disk_cache_sha1);
2349 fprintf(stderr, "deferring compile of shader: %s\n", buf);
2350 }
2351 shader->CompileStatus = COMPILE_SKIPPED;
2352
2353 free((void *)shader->FallbackSource);
2354
2355 /* Copy pre-processed shader include to fallback source otherwise
2356 * we have no guarantee the shader include source tree has not
2357 * changed.
2358 */
2359 if (source_has_shader_include) {
2360 shader->FallbackSource = strdup(source);
2361 memcpy(shader->fallback_source_blake3, source_blake3,
2362 BLAKE3_OUT_LEN);
2363 } else {
2364 shader->FallbackSource = NULL;
2365 }
2366 memcpy(shader->compiled_source_blake3, source_blake3,
2367 BLAKE3_OUT_LEN);
2368 return true;
2369 }
2370 }
2371 } else {
2372 /* We should only ever end up here if a re-compile has been forced by a
2373 * shader cache miss. In which case we can skip the compile if its
2374 * already been done by a previous fallback or the initial compile call.
2375 */
2376 if (shader->CompileStatus == COMPILE_SUCCESS)
2377 return true;
2378 }
2379
2380 return false;
2381 }
2382
2383 void
_mesa_glsl_compile_shader(struct gl_context * ctx,struct gl_shader * shader,bool dump_ast,bool dump_hir,bool force_recompile)2384 _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
2385 bool dump_ast, bool dump_hir, bool force_recompile)
2386 {
2387 const char *source;
2388 const uint8_t *source_blake3;
2389
2390 if (force_recompile && shader->FallbackSource) {
2391 source = shader->FallbackSource;
2392 source_blake3 = shader->fallback_source_blake3;
2393 } else {
2394 source = shader->Source;
2395 source_blake3 = shader->source_blake3;
2396 }
2397
2398 /* Note this will be true for shaders the have #include inside comments
2399 * however that should be rare enough not to worry about.
2400 */
2401 bool source_has_shader_include =
2402 strstr(source, "#include") == NULL ? false : true;
2403
2404 /* If there was no shader include we can check the shader cache and skip
2405 * compilation before we run the preprocessor. We never skip compiling
2406 * shaders that use ARB_shading_language_include because we would need to
2407 * keep duplicate copies of the shader include source tree and paths.
2408 */
2409 if (!source_has_shader_include &&
2410 can_skip_compile(ctx, shader, source, source_blake3, force_recompile,
2411 false))
2412 return;
2413
2414 struct _mesa_glsl_parse_state *state =
2415 new(shader) _mesa_glsl_parse_state(ctx, shader->Stage, shader);
2416
2417 if (ctx->Const.GenerateTemporaryNames)
2418 (void) p_atomic_cmpxchg(&ir_variable::temporaries_allocate_names,
2419 false, true);
2420
2421 if (!source_has_shader_include || !force_recompile) {
2422 state->error = glcpp_preprocess(state, &source, &state->info_log,
2423 add_builtin_defines, state, ctx);
2424 }
2425
2426 /* Now that we have run the preprocessor we can check the shader cache and
2427 * skip compilation if possible for those shaders that contained a shader
2428 * include.
2429 */
2430 if (source_has_shader_include &&
2431 can_skip_compile(ctx, shader, source, source_blake3, force_recompile,
2432 true))
2433 return;
2434
2435 if (!state->error) {
2436 _mesa_glsl_lexer_ctor(state, source);
2437 _mesa_glsl_parse(state);
2438 _mesa_glsl_lexer_dtor(state);
2439 do_late_parsing_checks(state);
2440 }
2441
2442 if (dump_ast) {
2443 foreach_list_typed(ast_node, ast, link, &state->translation_unit) {
2444 ast->print();
2445 }
2446 printf("\n\n");
2447 }
2448
2449 ralloc_free(shader->ir);
2450 shader->ir = new(shader) exec_list;
2451 if (!state->error && !state->translation_unit.is_empty())
2452 _mesa_ast_to_hir(shader->ir, state);
2453
2454 if (!state->error) {
2455 validate_ir_tree(shader->ir);
2456
2457 /* Print out the unoptimized IR. */
2458 if (dump_hir) {
2459 _mesa_print_ir(stdout, shader->ir, state);
2460 }
2461 }
2462
2463 if (shader->InfoLog)
2464 ralloc_free(shader->InfoLog);
2465
2466 if (!state->error)
2467 set_shader_inout_layout(shader, state);
2468
2469 shader->symbols = new(shader->ir) glsl_symbol_table;
2470 shader->CompileStatus = state->error ? COMPILE_FAILURE : COMPILE_SUCCESS;
2471 shader->InfoLog = state->info_log;
2472 shader->Version = state->language_version;
2473 shader->IsES = state->es_shader;
2474 shader->has_implicit_conversions = state->has_implicit_conversions();
2475 shader->has_implicit_int_to_uint_conversion =
2476 state->has_implicit_int_to_uint_conversion();
2477 shader->KHR_shader_subgroup_basic_enable = state->KHR_shader_subgroup_basic_enable;
2478
2479 struct gl_shader_compiler_options *options =
2480 &ctx->Const.ShaderCompilerOptions[shader->Stage];
2481
2482 if (!state->error && !shader->ir->is_empty()) {
2483 if (state->es_shader &&
2484 (options->LowerPrecisionFloat16 || options->LowerPrecisionInt16))
2485 lower_precision(options, shader->ir);
2486 lower_builtins(shader->ir);
2487 assign_subroutine_indexes(state);
2488 lower_subroutine(shader->ir, state);
2489 opt_shader_and_create_symbol_table(&ctx->Const, &ctx->Extensions,
2490 state->symbols, shader);
2491 }
2492
2493 if (!force_recompile) {
2494 free((void *)shader->FallbackSource);
2495
2496 /* Copy pre-processed shader include to fallback source otherwise we
2497 * have no guarantee the shader include source tree has not changed.
2498 */
2499 if (source_has_shader_include) {
2500 shader->FallbackSource = strdup(source);
2501 memcpy(shader->fallback_source_blake3, source_blake3, BLAKE3_OUT_LEN);
2502 } else {
2503 shader->FallbackSource = NULL;
2504 }
2505 }
2506
2507 delete state->symbols;
2508 ralloc_free(state);
2509
2510 if (shader->CompileStatus == COMPILE_SUCCESS)
2511 memcpy(shader->compiled_source_blake3, source_blake3, BLAKE3_OUT_LEN);
2512
2513 if (ctx->Cache && shader->CompileStatus == COMPILE_SUCCESS) {
2514 char sha1_buf[41];
2515 disk_cache_put_key(ctx->Cache, shader->disk_cache_sha1);
2516 if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
2517 _mesa_sha1_format(sha1_buf, shader->disk_cache_sha1);
2518 fprintf(stderr, "marking shader: %s\n", sha1_buf);
2519 }
2520 }
2521 }
2522
2523 } /* extern "C" */
2524 /**
2525 * Do the set of common optimizations passes
2526 *
2527 * \param ir List of instructions to be optimized
2528 * \param linked Is the shader linked? This enables
2529 * optimizations passes that remove code at
2530 * global scope and could cause linking to
2531 * fail.
2532 * \param uniform_locations_assigned Have locations already been assigned for
2533 * uniforms? This prevents the declarations
2534 * of unused uniforms from being removed.
2535 * The setting of this flag only matters if
2536 * \c linked is \c true.
2537 * \param options The driver's preferred shader options.
2538 * \param native_integers Selects optimizations that depend on the
2539 * implementations supporting integers
2540 * natively (as opposed to supporting
2541 * integers in floating point registers).
2542 */
2543 bool
do_common_optimization(exec_list * ir,bool linked,const struct gl_shader_compiler_options * options,bool native_integers)2544 do_common_optimization(exec_list *ir, bool linked,
2545 const struct gl_shader_compiler_options *options,
2546 bool native_integers)
2547 {
2548 const bool debug = false;
2549 bool progress = false;
2550
2551 #define OPT(PASS, ...) do { \
2552 if (debug) { \
2553 fprintf(stderr, "START GLSL optimization %s\n", #PASS); \
2554 const bool opt_progress = PASS(__VA_ARGS__); \
2555 progress = opt_progress || progress; \
2556 if (opt_progress) \
2557 _mesa_print_ir(stderr, ir, NULL); \
2558 fprintf(stderr, "GLSL optimization %s: %s progress\n", \
2559 #PASS, opt_progress ? "made" : "no"); \
2560 } else { \
2561 progress = PASS(__VA_ARGS__) || progress; \
2562 } \
2563 } while (false)
2564
2565 OPT(propagate_invariance, ir);
2566 OPT(do_if_simplification, ir);
2567 OPT(opt_flatten_nested_if_blocks, ir);
2568
2569 if (options->OptimizeForAOS && !linked)
2570 OPT(opt_flip_matrices, ir);
2571
2572 OPT(do_dead_code_unlinked, ir);
2573 OPT(do_dead_code_local, ir);
2574 OPT(do_tree_grafting, ir);
2575 OPT(do_minmax_prune, ir);
2576 OPT(do_rebalance_tree, ir);
2577 OPT(do_algebraic, ir, native_integers, options);
2578 OPT(do_lower_jumps, ir, true, true, options->EmitNoMainReturn,
2579 options->EmitNoCont);
2580
2581 /* If an optimization pass fails to preserve the invariant flag, calling
2582 * the pass only once earlier may result in incorrect code generation. Always call
2583 * propagate_invariance() last to avoid this possibility.
2584 */
2585 OPT(propagate_invariance, ir);
2586
2587 #undef OPT
2588
2589 return progress;
2590 }
2591