glsl: add scaffolding for EXT_gpu_shader4
[mesa.git] / src / compiler / glsl / glsl_parser_extras.cpp
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-sha1.h"
37 #include "ast.h"
38 #include "glsl_parser_extras.h"
39 #include "glsl_parser.h"
40 #include "ir_optimization.h"
41 #include "loop_analysis.h"
42 #include "builtin_functions.h"
43
44 /**
45 * Format a short human-readable description of the given GLSL version.
46 */
47 const char *
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
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), 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_alloc_parent(this, 0);
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 this->zero_init = ctx->Const.GLSLZeroInit;
86 this->gl_version = 20;
87 this->compat_shader = true;
88 this->es_shader = false;
89 this->ARB_texture_rectangle_enable = true;
90
91 /* OpenGL ES 2.0 has different defaults from desktop GL. */
92 if (ctx->API == API_OPENGLES2) {
93 this->language_version = 100;
94 this->es_shader = true;
95 this->ARB_texture_rectangle_enable = false;
96 }
97
98 this->extensions = &ctx->Extensions;
99
100 this->Const.MaxLights = ctx->Const.MaxLights;
101 this->Const.MaxClipPlanes = ctx->Const.MaxClipPlanes;
102 this->Const.MaxTextureUnits = ctx->Const.MaxTextureUnits;
103 this->Const.MaxTextureCoords = ctx->Const.MaxTextureCoordUnits;
104 this->Const.MaxVertexAttribs = ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs;
105 this->Const.MaxVertexUniformComponents = ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents;
106 this->Const.MaxVertexTextureImageUnits = ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits;
107 this->Const.MaxCombinedTextureImageUnits = ctx->Const.MaxCombinedTextureImageUnits;
108 this->Const.MaxTextureImageUnits = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits;
109 this->Const.MaxFragmentUniformComponents = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents;
110 this->Const.MinProgramTexelOffset = ctx->Const.MinProgramTexelOffset;
111 this->Const.MaxProgramTexelOffset = ctx->Const.MaxProgramTexelOffset;
112
113 this->Const.MaxDrawBuffers = ctx->Const.MaxDrawBuffers;
114
115 this->Const.MaxDualSourceDrawBuffers = ctx->Const.MaxDualSourceDrawBuffers;
116
117 /* 1.50 constants */
118 this->Const.MaxVertexOutputComponents = ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
119 this->Const.MaxGeometryInputComponents = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxInputComponents;
120 this->Const.MaxGeometryOutputComponents = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxOutputComponents;
121 this->Const.MaxGeometryShaderInvocations = ctx->Const.MaxGeometryShaderInvocations;
122 this->Const.MaxFragmentInputComponents = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents;
123 this->Const.MaxGeometryTextureImageUnits = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits;
124 this->Const.MaxGeometryOutputVertices = ctx->Const.MaxGeometryOutputVertices;
125 this->Const.MaxGeometryTotalOutputComponents = ctx->Const.MaxGeometryTotalOutputComponents;
126 this->Const.MaxGeometryUniformComponents = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxUniformComponents;
127
128 this->Const.MaxVertexAtomicCounters = ctx->Const.Program[MESA_SHADER_VERTEX].MaxAtomicCounters;
129 this->Const.MaxTessControlAtomicCounters = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxAtomicCounters;
130 this->Const.MaxTessEvaluationAtomicCounters = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxAtomicCounters;
131 this->Const.MaxGeometryAtomicCounters = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxAtomicCounters;
132 this->Const.MaxFragmentAtomicCounters = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters;
133 this->Const.MaxComputeAtomicCounters = ctx->Const.Program[MESA_SHADER_COMPUTE].MaxAtomicCounters;
134 this->Const.MaxCombinedAtomicCounters = ctx->Const.MaxCombinedAtomicCounters;
135 this->Const.MaxAtomicBufferBindings = ctx->Const.MaxAtomicBufferBindings;
136 this->Const.MaxVertexAtomicCounterBuffers =
137 ctx->Const.Program[MESA_SHADER_VERTEX].MaxAtomicBuffers;
138 this->Const.MaxTessControlAtomicCounterBuffers =
139 ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers;
140 this->Const.MaxTessEvaluationAtomicCounterBuffers =
141 ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers;
142 this->Const.MaxGeometryAtomicCounterBuffers =
143 ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers;
144 this->Const.MaxFragmentAtomicCounterBuffers =
145 ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
146 this->Const.MaxComputeAtomicCounterBuffers =
147 ctx->Const.Program[MESA_SHADER_COMPUTE].MaxAtomicBuffers;
148 this->Const.MaxCombinedAtomicCounterBuffers =
149 ctx->Const.MaxCombinedAtomicBuffers;
150 this->Const.MaxAtomicCounterBufferSize =
151 ctx->Const.MaxAtomicBufferSize;
152
153 /* ARB_enhanced_layouts constants */
154 this->Const.MaxTransformFeedbackBuffers = ctx->Const.MaxTransformFeedbackBuffers;
155 this->Const.MaxTransformFeedbackInterleavedComponents = ctx->Const.MaxTransformFeedbackInterleavedComponents;
156
157 /* Compute shader constants */
158 for (unsigned i = 0; i < ARRAY_SIZE(this->Const.MaxComputeWorkGroupCount); i++)
159 this->Const.MaxComputeWorkGroupCount[i] = ctx->Const.MaxComputeWorkGroupCount[i];
160 for (unsigned i = 0; i < ARRAY_SIZE(this->Const.MaxComputeWorkGroupSize); i++)
161 this->Const.MaxComputeWorkGroupSize[i] = ctx->Const.MaxComputeWorkGroupSize[i];
162
163 this->Const.MaxComputeTextureImageUnits = ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits;
164 this->Const.MaxComputeUniformComponents = ctx->Const.Program[MESA_SHADER_COMPUTE].MaxUniformComponents;
165
166 this->Const.MaxImageUnits = ctx->Const.MaxImageUnits;
167 this->Const.MaxCombinedShaderOutputResources = ctx->Const.MaxCombinedShaderOutputResources;
168 this->Const.MaxImageSamples = ctx->Const.MaxImageSamples;
169 this->Const.MaxVertexImageUniforms = ctx->Const.Program[MESA_SHADER_VERTEX].MaxImageUniforms;
170 this->Const.MaxTessControlImageUniforms = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms;
171 this->Const.MaxTessEvaluationImageUniforms = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms;
172 this->Const.MaxGeometryImageUniforms = ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxImageUniforms;
173 this->Const.MaxFragmentImageUniforms = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxImageUniforms;
174 this->Const.MaxComputeImageUniforms = ctx->Const.Program[MESA_SHADER_COMPUTE].MaxImageUniforms;
175 this->Const.MaxCombinedImageUniforms = ctx->Const.MaxCombinedImageUniforms;
176
177 /* ARB_viewport_array */
178 this->Const.MaxViewports = ctx->Const.MaxViewports;
179
180 /* tessellation shader constants */
181 this->Const.MaxPatchVertices = ctx->Const.MaxPatchVertices;
182 this->Const.MaxTessGenLevel = ctx->Const.MaxTessGenLevel;
183 this->Const.MaxTessControlInputComponents = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxInputComponents;
184 this->Const.MaxTessControlOutputComponents = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxOutputComponents;
185 this->Const.MaxTessControlTextureImageUnits = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits;
186 this->Const.MaxTessEvaluationInputComponents = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxInputComponents;
187 this->Const.MaxTessEvaluationOutputComponents = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxOutputComponents;
188 this->Const.MaxTessEvaluationTextureImageUnits = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits;
189 this->Const.MaxTessPatchComponents = ctx->Const.MaxTessPatchComponents;
190 this->Const.MaxTessControlTotalOutputComponents = ctx->Const.MaxTessControlTotalOutputComponents;
191 this->Const.MaxTessControlUniformComponents = ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents;
192 this->Const.MaxTessEvaluationUniformComponents = ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents;
193
194 /* GL 4.5 / OES_sample_variables */
195 this->Const.MaxSamples = ctx->Const.MaxSamples;
196
197 this->current_function = NULL;
198 this->toplevel_ir = NULL;
199 this->found_return = false;
200 this->all_invariant = false;
201 this->user_structures = NULL;
202 this->num_user_structures = 0;
203 this->num_subroutines = 0;
204 this->subroutines = NULL;
205 this->num_subroutine_types = 0;
206 this->subroutine_types = NULL;
207
208 /* supported_versions should be large enough to support the known desktop
209 * GLSL versions plus 4 GLES versions (ES 1.00, ES 3.00, ES 3.10, ES 3.20)
210 */
211 STATIC_ASSERT((ARRAY_SIZE(known_desktop_glsl_versions) + 4) ==
212 ARRAY_SIZE(this->supported_versions));
213
214 /* Populate the list of supported GLSL versions */
215 /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or
216 * the OpenGL 3.2 Core context is supported, this logic will need
217 * change. Older versions of GLSL are no longer supported
218 * outside the compatibility contexts of 3.x.
219 */
220 this->num_supported_versions = 0;
221 if (_mesa_is_desktop_gl(ctx)) {
222 for (unsigned i = 0; i < ARRAY_SIZE(known_desktop_glsl_versions); i++) {
223 if (known_desktop_glsl_versions[i] <= ctx->Const.GLSLVersion) {
224 this->supported_versions[this->num_supported_versions].ver
225 = known_desktop_glsl_versions[i];
226 this->supported_versions[this->num_supported_versions].gl_ver
227 = known_desktop_gl_versions[i];
228 this->supported_versions[this->num_supported_versions].es = false;
229 this->num_supported_versions++;
230 }
231 }
232 }
233 if (ctx->API == API_OPENGLES2 || ctx->Extensions.ARB_ES2_compatibility) {
234 this->supported_versions[this->num_supported_versions].ver = 100;
235 this->supported_versions[this->num_supported_versions].gl_ver = 20;
236 this->supported_versions[this->num_supported_versions].es = true;
237 this->num_supported_versions++;
238 }
239 if (_mesa_is_gles3(ctx) || ctx->Extensions.ARB_ES3_compatibility) {
240 this->supported_versions[this->num_supported_versions].ver = 300;
241 this->supported_versions[this->num_supported_versions].gl_ver = 30;
242 this->supported_versions[this->num_supported_versions].es = true;
243 this->num_supported_versions++;
244 }
245 if (_mesa_is_gles31(ctx) || ctx->Extensions.ARB_ES3_1_compatibility) {
246 this->supported_versions[this->num_supported_versions].ver = 310;
247 this->supported_versions[this->num_supported_versions].gl_ver = 31;
248 this->supported_versions[this->num_supported_versions].es = true;
249 this->num_supported_versions++;
250 }
251 if ((ctx->API == API_OPENGLES2 && ctx->Version >= 32) ||
252 ctx->Extensions.ARB_ES3_2_compatibility) {
253 this->supported_versions[this->num_supported_versions].ver = 320;
254 this->supported_versions[this->num_supported_versions].gl_ver = 32;
255 this->supported_versions[this->num_supported_versions].es = true;
256 this->num_supported_versions++;
257 }
258
259 /* Create a string for use in error messages to tell the user which GLSL
260 * versions are supported.
261 */
262 char *supported = ralloc_strdup(this, "");
263 for (unsigned i = 0; i < this->num_supported_versions; i++) {
264 unsigned ver = this->supported_versions[i].ver;
265 const char *const prefix = (i == 0)
266 ? ""
267 : ((i == this->num_supported_versions - 1) ? ", and " : ", ");
268 const char *const suffix = (this->supported_versions[i].es) ? " ES" : "";
269
270 ralloc_asprintf_append(& supported, "%s%u.%02u%s",
271 prefix,
272 ver / 100, ver % 100,
273 suffix);
274 }
275
276 this->supported_version_string = supported;
277
278 if (ctx->Const.ForceGLSLExtensionsWarn)
279 _mesa_glsl_process_extension("all", NULL, "warn", NULL, this);
280
281 this->default_uniform_qualifier = new(this) ast_type_qualifier();
282 this->default_uniform_qualifier->flags.q.shared = 1;
283 this->default_uniform_qualifier->flags.q.column_major = 1;
284
285 this->default_shader_storage_qualifier = new(this) ast_type_qualifier();
286 this->default_shader_storage_qualifier->flags.q.shared = 1;
287 this->default_shader_storage_qualifier->flags.q.column_major = 1;
288
289 this->fs_uses_gl_fragcoord = false;
290 this->fs_redeclares_gl_fragcoord = false;
291 this->fs_origin_upper_left = false;
292 this->fs_pixel_center_integer = false;
293 this->fs_redeclares_gl_fragcoord_with_no_layout_qualifiers = false;
294
295 this->gs_input_prim_type_specified = false;
296 this->tcs_output_vertices_specified = false;
297 this->gs_input_size = 0;
298 this->in_qualifier = new(this) ast_type_qualifier();
299 this->out_qualifier = new(this) ast_type_qualifier();
300 this->fs_early_fragment_tests = false;
301 this->fs_inner_coverage = false;
302 this->fs_post_depth_coverage = false;
303 this->fs_pixel_interlock_ordered = false;
304 this->fs_pixel_interlock_unordered = false;
305 this->fs_sample_interlock_ordered = false;
306 this->fs_sample_interlock_unordered = false;
307 this->fs_blend_support = 0;
308 memset(this->atomic_counter_offsets, 0,
309 sizeof(this->atomic_counter_offsets));
310 this->allow_extension_directive_midshader =
311 ctx->Const.AllowGLSLExtensionDirectiveMidShader;
312 this->allow_builtin_variable_redeclaration =
313 ctx->Const.AllowGLSLBuiltinVariableRedeclaration;
314 this->allow_layout_qualifier_on_function_parameter =
315 ctx->Const.AllowLayoutQualifiersOnFunctionParameters;
316
317 this->cs_input_local_size_variable_specified = false;
318
319 /* ARB_bindless_texture */
320 this->bindless_sampler_specified = false;
321 this->bindless_image_specified = false;
322 this->bound_sampler_specified = false;
323 this->bound_image_specified = false;
324 }
325
326 /**
327 * Determine whether the current GLSL version is sufficiently high to support
328 * a certain feature, and generate an error message if it isn't.
329 *
330 * \param required_glsl_version and \c required_glsl_es_version are
331 * interpreted as they are in _mesa_glsl_parse_state::is_version().
332 *
333 * \param locp is the parser location where the error should be reported.
334 *
335 * \param fmt (and additional arguments) constitute a printf-style error
336 * message to report if the version check fails. Information about the
337 * current and required GLSL versions will be appended. So, for example, if
338 * the GLSL version being compiled is 1.20, and check_version(130, 300, locp,
339 * "foo unsupported") is called, the error message will be "foo unsupported in
340 * GLSL 1.20 (GLSL 1.30 or GLSL 3.00 ES required)".
341 */
342 bool
343 _mesa_glsl_parse_state::check_version(unsigned required_glsl_version,
344 unsigned required_glsl_es_version,
345 YYLTYPE *locp, const char *fmt, ...)
346 {
347 if (this->is_version(required_glsl_version, required_glsl_es_version))
348 return true;
349
350 va_list args;
351 va_start(args, fmt);
352 char *problem = ralloc_vasprintf(this, fmt, args);
353 va_end(args);
354 const char *glsl_version_string
355 = glsl_compute_version_string(this, false, required_glsl_version);
356 const char *glsl_es_version_string
357 = glsl_compute_version_string(this, true, required_glsl_es_version);
358 const char *requirement_string = "";
359 if (required_glsl_version && required_glsl_es_version) {
360 requirement_string = ralloc_asprintf(this, " (%s or %s required)",
361 glsl_version_string,
362 glsl_es_version_string);
363 } else if (required_glsl_version) {
364 requirement_string = ralloc_asprintf(this, " (%s required)",
365 glsl_version_string);
366 } else if (required_glsl_es_version) {
367 requirement_string = ralloc_asprintf(this, " (%s required)",
368 glsl_es_version_string);
369 }
370 _mesa_glsl_error(locp, this, "%s in %s%s",
371 problem, this->get_version_string(),
372 requirement_string);
373
374 return false;
375 }
376
377 /**
378 * Process a GLSL #version directive.
379 *
380 * \param version is the integer that follows the #version token.
381 *
382 * \param ident is a string identifier that follows the integer, if any is
383 * present. Otherwise NULL.
384 */
385 void
386 _mesa_glsl_parse_state::process_version_directive(YYLTYPE *locp, int version,
387 const char *ident)
388 {
389 bool es_token_present = false;
390 bool compat_token_present = false;
391 if (ident) {
392 if (strcmp(ident, "es") == 0) {
393 es_token_present = true;
394 } else if (version >= 150) {
395 if (strcmp(ident, "core") == 0) {
396 /* Accept the token. There's no need to record that this is
397 * a core profile shader since that's the only profile we support.
398 */
399 } else if (strcmp(ident, "compatibility") == 0) {
400 compat_token_present = true;
401
402 if (this->ctx->API != API_OPENGL_COMPAT) {
403 _mesa_glsl_error(locp, this,
404 "the compatibility profile is not supported");
405 }
406 } else {
407 _mesa_glsl_error(locp, this,
408 "\"%s\" is not a valid shading language profile; "
409 "if present, it must be \"core\"", ident);
410 }
411 } else {
412 _mesa_glsl_error(locp, this,
413 "illegal text following version number");
414 }
415 }
416
417 this->es_shader = es_token_present;
418 if (version == 100) {
419 if (es_token_present) {
420 _mesa_glsl_error(locp, this,
421 "GLSL 1.00 ES should be selected using "
422 "`#version 100'");
423 } else {
424 this->es_shader = true;
425 }
426 }
427
428 if (this->es_shader) {
429 this->ARB_texture_rectangle_enable = false;
430 }
431
432 if (this->forced_language_version)
433 this->language_version = this->forced_language_version;
434 else
435 this->language_version = version;
436
437 this->compat_shader = compat_token_present ||
438 (this->ctx->API == API_OPENGL_COMPAT &&
439 this->language_version == 140) ||
440 (!this->es_shader && this->language_version < 140);
441
442 bool supported = false;
443 for (unsigned i = 0; i < this->num_supported_versions; i++) {
444 if (this->supported_versions[i].ver == this->language_version
445 && this->supported_versions[i].es == this->es_shader) {
446 this->gl_version = this->supported_versions[i].gl_ver;
447 supported = true;
448 break;
449 }
450 }
451
452 if (!supported) {
453 _mesa_glsl_error(locp, this, "%s is not supported. "
454 "Supported versions are: %s",
455 this->get_version_string(),
456 this->supported_version_string);
457
458 /* On exit, the language_version must be set to a valid value.
459 * Later calls to _mesa_glsl_initialize_types will misbehave if
460 * the version is invalid.
461 */
462 switch (this->ctx->API) {
463 case API_OPENGL_COMPAT:
464 case API_OPENGL_CORE:
465 this->language_version = this->ctx->Const.GLSLVersion;
466 break;
467
468 case API_OPENGLES:
469 assert(!"Should not get here.");
470 /* FALLTHROUGH */
471
472 case API_OPENGLES2:
473 this->language_version = 100;
474 break;
475 }
476 }
477 }
478
479
480 /* This helper function will append the given message to the shader's
481 info log and report it via GL_ARB_debug_output. Per that extension,
482 'type' is one of the enum values classifying the message, and
483 'id' is the implementation-defined ID of the given message. */
484 static void
485 _mesa_glsl_msg(const YYLTYPE *locp, _mesa_glsl_parse_state *state,
486 GLenum type, const char *fmt, va_list ap)
487 {
488 bool error = (type == MESA_DEBUG_TYPE_ERROR);
489 GLuint msg_id = 0;
490
491 assert(state->info_log != NULL);
492
493 /* Get the offset that the new message will be written to. */
494 int msg_offset = strlen(state->info_log);
495
496 ralloc_asprintf_append(&state->info_log, "%u:%u(%u): %s: ",
497 locp->source,
498 locp->first_line,
499 locp->first_column,
500 error ? "error" : "warning");
501 ralloc_vasprintf_append(&state->info_log, fmt, ap);
502
503 const char *const msg = &state->info_log[msg_offset];
504 struct gl_context *ctx = state->ctx;
505
506 /* Report the error via GL_ARB_debug_output. */
507 _mesa_shader_debug(ctx, type, &msg_id, msg);
508
509 ralloc_strcat(&state->info_log, "\n");
510 }
511
512 void
513 _mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state,
514 const char *fmt, ...)
515 {
516 va_list ap;
517
518 state->error = true;
519
520 va_start(ap, fmt);
521 _mesa_glsl_msg(locp, state, MESA_DEBUG_TYPE_ERROR, fmt, ap);
522 va_end(ap);
523 }
524
525
526 void
527 _mesa_glsl_warning(const YYLTYPE *locp, _mesa_glsl_parse_state *state,
528 const char *fmt, ...)
529 {
530 if (state->warnings_enabled) {
531 va_list ap;
532
533 va_start(ap, fmt);
534 _mesa_glsl_msg(locp, state, MESA_DEBUG_TYPE_OTHER, fmt, ap);
535 va_end(ap);
536 }
537 }
538
539
540 /**
541 * Enum representing the possible behaviors that can be specified in
542 * an #extension directive.
543 */
544 enum ext_behavior {
545 extension_disable,
546 extension_enable,
547 extension_require,
548 extension_warn
549 };
550
551 /**
552 * Element type for _mesa_glsl_supported_extensions
553 */
554 struct _mesa_glsl_extension {
555 /**
556 * Name of the extension when referred to in a GLSL extension
557 * statement
558 */
559 const char *name;
560
561 /**
562 * Whether this extension is a part of AEP
563 */
564 bool aep;
565
566 /**
567 * Predicate that checks whether the relevant extension is available for
568 * this context.
569 */
570 bool (*available_pred)(const struct gl_context *,
571 gl_api api, uint8_t version);
572
573 /**
574 * Flag in the _mesa_glsl_parse_state struct that should be set
575 * when this extension is enabled.
576 *
577 * See note in _mesa_glsl_extension::supported_flag about "pointer
578 * to member" types.
579 */
580 bool _mesa_glsl_parse_state::* enable_flag;
581
582 /**
583 * Flag in the _mesa_glsl_parse_state struct that should be set
584 * when the shader requests "warn" behavior for this extension.
585 *
586 * See note in _mesa_glsl_extension::supported_flag about "pointer
587 * to member" types.
588 */
589 bool _mesa_glsl_parse_state::* warn_flag;
590
591
592 bool compatible_with_state(const _mesa_glsl_parse_state *state,
593 gl_api api, uint8_t gl_version) const;
594 void set_flags(_mesa_glsl_parse_state *state, ext_behavior behavior) const;
595 };
596
597 /** Checks if the context supports a user-facing extension */
598 #define EXT(name_str, driver_cap, ...) \
599 static MAYBE_UNUSED bool \
600 has_##name_str(const struct gl_context *ctx, gl_api api, uint8_t version) \
601 { \
602 return ctx->Extensions.driver_cap && (version >= \
603 _mesa_extension_table[MESA_EXTENSION_##name_str].version[api]); \
604 }
605 #include "main/extensions_table.h"
606 #undef EXT
607
608 #define EXT(NAME) \
609 { "GL_" #NAME, false, has_##NAME, \
610 &_mesa_glsl_parse_state::NAME##_enable, \
611 &_mesa_glsl_parse_state::NAME##_warn }
612
613 #define EXT_AEP(NAME) \
614 { "GL_" #NAME, true, has_##NAME, \
615 &_mesa_glsl_parse_state::NAME##_enable, \
616 &_mesa_glsl_parse_state::NAME##_warn }
617
618 /**
619 * Table of extensions that can be enabled/disabled within a shader,
620 * and the conditions under which they are supported.
621 */
622 static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
623 /* ARB extensions go here, sorted alphabetically.
624 */
625 EXT(ARB_ES3_1_compatibility),
626 EXT(ARB_ES3_2_compatibility),
627 EXT(ARB_arrays_of_arrays),
628 EXT(ARB_bindless_texture),
629 EXT(ARB_compatibility),
630 EXT(ARB_compute_shader),
631 EXT(ARB_compute_variable_group_size),
632 EXT(ARB_conservative_depth),
633 EXT(ARB_cull_distance),
634 EXT(ARB_derivative_control),
635 EXT(ARB_draw_buffers),
636 EXT(ARB_draw_instanced),
637 EXT(ARB_enhanced_layouts),
638 EXT(ARB_explicit_attrib_location),
639 EXT(ARB_explicit_uniform_location),
640 EXT(ARB_fragment_coord_conventions),
641 EXT(ARB_fragment_layer_viewport),
642 EXT(ARB_fragment_shader_interlock),
643 EXT(ARB_gpu_shader5),
644 EXT(ARB_gpu_shader_fp64),
645 EXT(ARB_gpu_shader_int64),
646 EXT(ARB_post_depth_coverage),
647 EXT(ARB_sample_shading),
648 EXT(ARB_separate_shader_objects),
649 EXT(ARB_shader_atomic_counter_ops),
650 EXT(ARB_shader_atomic_counters),
651 EXT(ARB_shader_ballot),
652 EXT(ARB_shader_bit_encoding),
653 EXT(ARB_shader_clock),
654 EXT(ARB_shader_draw_parameters),
655 EXT(ARB_shader_group_vote),
656 EXT(ARB_shader_image_load_store),
657 EXT(ARB_shader_image_size),
658 EXT(ARB_shader_precision),
659 EXT(ARB_shader_stencil_export),
660 EXT(ARB_shader_storage_buffer_object),
661 EXT(ARB_shader_subroutine),
662 EXT(ARB_shader_texture_image_samples),
663 EXT(ARB_shader_texture_lod),
664 EXT(ARB_shader_viewport_layer_array),
665 EXT(ARB_shading_language_420pack),
666 EXT(ARB_shading_language_packing),
667 EXT(ARB_tessellation_shader),
668 EXT(ARB_texture_cube_map_array),
669 EXT(ARB_texture_gather),
670 EXT(ARB_texture_multisample),
671 EXT(ARB_texture_query_levels),
672 EXT(ARB_texture_query_lod),
673 EXT(ARB_texture_rectangle),
674 EXT(ARB_uniform_buffer_object),
675 EXT(ARB_vertex_attrib_64bit),
676 EXT(ARB_viewport_array),
677
678 /* KHR extensions go here, sorted alphabetically.
679 */
680 EXT_AEP(KHR_blend_equation_advanced),
681
682 /* OES extensions go here, sorted alphabetically.
683 */
684 EXT(OES_EGL_image_external),
685 EXT(OES_EGL_image_external_essl3),
686 EXT(OES_geometry_point_size),
687 EXT(OES_geometry_shader),
688 EXT(OES_gpu_shader5),
689 EXT(OES_primitive_bounding_box),
690 EXT_AEP(OES_sample_variables),
691 EXT_AEP(OES_shader_image_atomic),
692 EXT(OES_shader_io_blocks),
693 EXT_AEP(OES_shader_multisample_interpolation),
694 EXT(OES_standard_derivatives),
695 EXT(OES_tessellation_point_size),
696 EXT(OES_tessellation_shader),
697 EXT(OES_texture_3D),
698 EXT(OES_texture_buffer),
699 EXT(OES_texture_cube_map_array),
700 EXT_AEP(OES_texture_storage_multisample_2d_array),
701 EXT(OES_viewport_array),
702
703 /* All other extensions go here, sorted alphabetically.
704 */
705 EXT(AMD_conservative_depth),
706 EXT(AMD_gpu_shader_int64),
707 EXT(AMD_shader_stencil_export),
708 EXT(AMD_shader_trinary_minmax),
709 EXT(AMD_texture_texture4),
710 EXT(AMD_vertex_shader_layer),
711 EXT(AMD_vertex_shader_viewport_index),
712 EXT(ANDROID_extension_pack_es31a),
713 EXT(EXT_blend_func_extended),
714 EXT(EXT_frag_depth),
715 EXT(EXT_draw_buffers),
716 EXT(EXT_clip_cull_distance),
717 EXT(EXT_geometry_point_size),
718 EXT_AEP(EXT_geometry_shader),
719 EXT(EXT_gpu_shader4),
720 EXT_AEP(EXT_gpu_shader5),
721 EXT_AEP(EXT_primitive_bounding_box),
722 EXT(EXT_separate_shader_objects),
723 EXT(EXT_shader_framebuffer_fetch),
724 EXT(EXT_shader_framebuffer_fetch_non_coherent),
725 EXT(EXT_shader_image_load_formatted),
726 EXT(EXT_shader_implicit_conversions),
727 EXT(EXT_shader_integer_mix),
728 EXT_AEP(EXT_shader_io_blocks),
729 EXT(EXT_shader_samples_identical),
730 EXT(EXT_tessellation_point_size),
731 EXT_AEP(EXT_tessellation_shader),
732 EXT(EXT_texture_array),
733 EXT_AEP(EXT_texture_buffer),
734 EXT_AEP(EXT_texture_cube_map_array),
735 EXT(EXT_texture_query_lod),
736 EXT(INTEL_conservative_rasterization),
737 EXT(INTEL_shader_atomic_float_minmax),
738 EXT(MESA_shader_integer_functions),
739 EXT(NV_compute_shader_derivatives),
740 EXT(NV_fragment_shader_interlock),
741 EXT(NV_image_formats),
742 EXT(NV_shader_atomic_float),
743 };
744
745 #undef EXT
746
747
748 /**
749 * Determine whether a given extension is compatible with the target,
750 * API, and extension information in the current parser state.
751 */
752 bool _mesa_glsl_extension::compatible_with_state(
753 const _mesa_glsl_parse_state *state, gl_api api, uint8_t gl_version) const
754 {
755 return this->available_pred(state->ctx, api, gl_version);
756 }
757
758 /**
759 * Set the appropriate flags in the parser state to establish the
760 * given behavior for this extension.
761 */
762 void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state *state,
763 ext_behavior behavior) const
764 {
765 /* Note: the ->* operator indexes into state by the
766 * offsets this->enable_flag and this->warn_flag. See
767 * _mesa_glsl_extension::supported_flag for more info.
768 */
769 state->*(this->enable_flag) = (behavior != extension_disable);
770 state->*(this->warn_flag) = (behavior == extension_warn);
771 }
772
773 /**
774 * Find an extension by name in _mesa_glsl_supported_extensions. If
775 * the name is not found, return NULL.
776 */
777 static const _mesa_glsl_extension *find_extension(const char *name)
778 {
779 for (unsigned i = 0; i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
780 if (strcmp(name, _mesa_glsl_supported_extensions[i].name) == 0) {
781 return &_mesa_glsl_supported_extensions[i];
782 }
783 }
784 return NULL;
785 }
786
787 bool
788 _mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
789 const char *behavior_string, YYLTYPE *behavior_locp,
790 _mesa_glsl_parse_state *state)
791 {
792 uint8_t gl_version = state->ctx->Extensions.Version;
793 gl_api api = state->ctx->API;
794 ext_behavior behavior;
795 if (strcmp(behavior_string, "warn") == 0) {
796 behavior = extension_warn;
797 } else if (strcmp(behavior_string, "require") == 0) {
798 behavior = extension_require;
799 } else if (strcmp(behavior_string, "enable") == 0) {
800 behavior = extension_enable;
801 } else if (strcmp(behavior_string, "disable") == 0) {
802 behavior = extension_disable;
803 } else {
804 _mesa_glsl_error(behavior_locp, state,
805 "unknown extension behavior `%s'",
806 behavior_string);
807 return false;
808 }
809
810 /* If we're in a desktop context but with an ES shader, use an ES API enum
811 * to verify extension availability.
812 */
813 if (state->es_shader && api != API_OPENGLES2)
814 api = API_OPENGLES2;
815 /* Use the language-version derived GL version to extension checks, unless
816 * we're using meta, which sets the version to the max.
817 */
818 if (gl_version != 0xff)
819 gl_version = state->gl_version;
820
821 if (strcmp(name, "all") == 0) {
822 if ((behavior == extension_enable) || (behavior == extension_require)) {
823 _mesa_glsl_error(name_locp, state, "cannot %s all extensions",
824 (behavior == extension_enable)
825 ? "enable" : "require");
826 return false;
827 } else {
828 for (unsigned i = 0;
829 i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
830 const _mesa_glsl_extension *extension
831 = &_mesa_glsl_supported_extensions[i];
832 if (extension->compatible_with_state(state, api, gl_version)) {
833 _mesa_glsl_supported_extensions[i].set_flags(state, behavior);
834 }
835 }
836 }
837 } else {
838 const _mesa_glsl_extension *extension = find_extension(name);
839 if (extension && extension->compatible_with_state(state, api, gl_version)) {
840 extension->set_flags(state, behavior);
841 if (extension->available_pred == has_ANDROID_extension_pack_es31a) {
842 for (unsigned i = 0;
843 i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
844 const _mesa_glsl_extension *extension =
845 &_mesa_glsl_supported_extensions[i];
846
847 if (!extension->aep)
848 continue;
849 /* AEP should not be enabled if all of the sub-extensions can't
850 * also be enabled. This is not the proper layer to do such
851 * error-checking though.
852 */
853 assert(extension->compatible_with_state(state, api, gl_version));
854 extension->set_flags(state, behavior);
855 }
856 }
857 } else {
858 static const char fmt[] = "extension `%s' unsupported in %s shader";
859
860 if (behavior == extension_require) {
861 _mesa_glsl_error(name_locp, state, fmt,
862 name, _mesa_shader_stage_to_string(state->stage));
863 return false;
864 } else {
865 _mesa_glsl_warning(name_locp, state, fmt,
866 name, _mesa_shader_stage_to_string(state->stage));
867 }
868 }
869 }
870
871 return true;
872 }
873
874
875 /**
876 * Recurses through <type> and <expr> if <expr> is an aggregate initializer
877 * and sets <expr>'s <constructor_type> field to <type>. Gives later functions
878 * (process_array_constructor, et al) sufficient information to do type
879 * checking.
880 *
881 * Operates on assignments involving an aggregate initializer. E.g.,
882 *
883 * vec4 pos = {1.0, -1.0, 0.0, 1.0};
884 *
885 * or more ridiculously,
886 *
887 * struct S {
888 * vec4 v[2];
889 * };
890 *
891 * struct {
892 * S a[2], b;
893 * int c;
894 * } aggregate = {
895 * {
896 * {
897 * {
898 * {1.0, 2.0, 3.0, 4.0}, // a[0].v[0]
899 * {5.0, 6.0, 7.0, 8.0} // a[0].v[1]
900 * } // a[0].v
901 * }, // a[0]
902 * {
903 * {
904 * {1.0, 2.0, 3.0, 4.0}, // a[1].v[0]
905 * {5.0, 6.0, 7.0, 8.0} // a[1].v[1]
906 * } // a[1].v
907 * } // a[1]
908 * }, // a
909 * {
910 * {
911 * {1.0, 2.0, 3.0, 4.0}, // b.v[0]
912 * {5.0, 6.0, 7.0, 8.0} // b.v[1]
913 * } // b.v
914 * }, // b
915 * 4 // c
916 * };
917 *
918 * This pass is necessary because the right-hand side of <type> e = { ... }
919 * doesn't contain sufficient information to determine if the types match.
920 */
921 void
922 _mesa_ast_set_aggregate_type(const glsl_type *type,
923 ast_expression *expr)
924 {
925 ast_aggregate_initializer *ai = (ast_aggregate_initializer *)expr;
926 ai->constructor_type = type;
927
928 /* If the aggregate is an array, recursively set its elements' types. */
929 if (type->is_array()) {
930 /* Each array element has the type type->fields.array.
931 *
932 * E.g., if <type> if struct S[2] we want to set each element's type to
933 * struct S.
934 */
935 for (exec_node *expr_node = ai->expressions.get_head_raw();
936 !expr_node->is_tail_sentinel();
937 expr_node = expr_node->next) {
938 ast_expression *expr = exec_node_data(ast_expression, expr_node,
939 link);
940
941 if (expr->oper == ast_aggregate)
942 _mesa_ast_set_aggregate_type(type->fields.array, expr);
943 }
944
945 /* If the aggregate is a struct, recursively set its fields' types. */
946 } else if (type->is_struct()) {
947 exec_node *expr_node = ai->expressions.get_head_raw();
948
949 /* Iterate through the struct's fields. */
950 for (unsigned i = 0; !expr_node->is_tail_sentinel() && i < type->length;
951 i++, expr_node = expr_node->next) {
952 ast_expression *expr = exec_node_data(ast_expression, expr_node,
953 link);
954
955 if (expr->oper == ast_aggregate) {
956 _mesa_ast_set_aggregate_type(type->fields.structure[i].type, expr);
957 }
958 }
959 /* If the aggregate is a matrix, set its columns' types. */
960 } else if (type->is_matrix()) {
961 for (exec_node *expr_node = ai->expressions.get_head_raw();
962 !expr_node->is_tail_sentinel();
963 expr_node = expr_node->next) {
964 ast_expression *expr = exec_node_data(ast_expression, expr_node,
965 link);
966
967 if (expr->oper == ast_aggregate)
968 _mesa_ast_set_aggregate_type(type->column_type(), expr);
969 }
970 }
971 }
972
973 void
974 _mesa_ast_process_interface_block(YYLTYPE *locp,
975 _mesa_glsl_parse_state *state,
976 ast_interface_block *const block,
977 const struct ast_type_qualifier &q)
978 {
979 if (q.flags.q.buffer) {
980 if (!state->has_shader_storage_buffer_objects()) {
981 _mesa_glsl_error(locp, state,
982 "#version 430 / GL_ARB_shader_storage_buffer_object "
983 "required for defining shader storage blocks");
984 } else if (state->ARB_shader_storage_buffer_object_warn) {
985 _mesa_glsl_warning(locp, state,
986 "#version 430 / GL_ARB_shader_storage_buffer_object "
987 "required for defining shader storage blocks");
988 }
989 } else if (q.flags.q.uniform) {
990 if (!state->has_uniform_buffer_objects()) {
991 _mesa_glsl_error(locp, state,
992 "#version 140 / GL_ARB_uniform_buffer_object "
993 "required for defining uniform blocks");
994 } else if (state->ARB_uniform_buffer_object_warn) {
995 _mesa_glsl_warning(locp, state,
996 "#version 140 / GL_ARB_uniform_buffer_object "
997 "required for defining uniform blocks");
998 }
999 } else {
1000 if (!state->has_shader_io_blocks()) {
1001 if (state->es_shader) {
1002 _mesa_glsl_error(locp, state,
1003 "GL_OES_shader_io_blocks or #version 320 "
1004 "required for using interface blocks");
1005 } else {
1006 _mesa_glsl_error(locp, state,
1007 "#version 150 required for using "
1008 "interface blocks");
1009 }
1010 }
1011 }
1012
1013 /* From the GLSL 1.50.11 spec, section 4.3.7 ("Interface Blocks"):
1014 * "It is illegal to have an input block in a vertex shader
1015 * or an output block in a fragment shader"
1016 */
1017 if ((state->stage == MESA_SHADER_VERTEX) && q.flags.q.in) {
1018 _mesa_glsl_error(locp, state,
1019 "`in' interface block is not allowed for "
1020 "a vertex shader");
1021 } else if ((state->stage == MESA_SHADER_FRAGMENT) && q.flags.q.out) {
1022 _mesa_glsl_error(locp, state,
1023 "`out' interface block is not allowed for "
1024 "a fragment shader");
1025 }
1026
1027 /* Since block arrays require names, and both features are added in
1028 * the same language versions, we don't have to explicitly
1029 * version-check both things.
1030 */
1031 if (block->instance_name != NULL) {
1032 state->check_version(150, 300, locp, "interface blocks with "
1033 "an instance name are not allowed");
1034 }
1035
1036 ast_type_qualifier::bitset_t interface_type_mask;
1037 struct ast_type_qualifier temp_type_qualifier;
1038
1039 /* Get a bitmask containing only the in/out/uniform/buffer
1040 * flags, allowing us to ignore other irrelevant flags like
1041 * interpolation qualifiers.
1042 */
1043 temp_type_qualifier.flags.i = 0;
1044 temp_type_qualifier.flags.q.uniform = true;
1045 temp_type_qualifier.flags.q.in = true;
1046 temp_type_qualifier.flags.q.out = true;
1047 temp_type_qualifier.flags.q.buffer = true;
1048 temp_type_qualifier.flags.q.patch = true;
1049 interface_type_mask = temp_type_qualifier.flags.i;
1050
1051 /* Get the block's interface qualifier. The interface_qualifier
1052 * production rule guarantees that only one bit will be set (and
1053 * it will be in/out/uniform).
1054 */
1055 ast_type_qualifier::bitset_t block_interface_qualifier = q.flags.i;
1056
1057 block->default_layout.flags.i |= block_interface_qualifier;
1058
1059 if (state->stage == MESA_SHADER_GEOMETRY &&
1060 state->has_explicit_attrib_stream() &&
1061 block->default_layout.flags.q.out) {
1062 /* Assign global layout's stream value. */
1063 block->default_layout.flags.q.stream = 1;
1064 block->default_layout.flags.q.explicit_stream = 0;
1065 block->default_layout.stream = state->out_qualifier->stream;
1066 }
1067
1068 if (state->has_enhanced_layouts() && block->default_layout.flags.q.out) {
1069 /* Assign global layout's xfb_buffer value. */
1070 block->default_layout.flags.q.xfb_buffer = 1;
1071 block->default_layout.flags.q.explicit_xfb_buffer = 0;
1072 block->default_layout.xfb_buffer = state->out_qualifier->xfb_buffer;
1073 }
1074
1075 foreach_list_typed (ast_declarator_list, member, link, &block->declarations) {
1076 ast_type_qualifier& qualifier = member->type->qualifier;
1077 if ((qualifier.flags.i & interface_type_mask) == 0) {
1078 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1079 * "If no optional qualifier is used in a member declaration, the
1080 * qualifier of the variable is just in, out, or uniform as declared
1081 * by interface-qualifier."
1082 */
1083 qualifier.flags.i |= block_interface_qualifier;
1084 } else if ((qualifier.flags.i & interface_type_mask) !=
1085 block_interface_qualifier) {
1086 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1087 * "If optional qualifiers are used, they can include interpolation
1088 * and storage qualifiers and they must declare an input, output,
1089 * or uniform variable consistent with the interface qualifier of
1090 * the block."
1091 */
1092 _mesa_glsl_error(locp, state,
1093 "uniform/in/out qualifier on "
1094 "interface block member does not match "
1095 "the interface block");
1096 }
1097
1098 if (!(q.flags.q.in || q.flags.q.out) && qualifier.flags.q.invariant)
1099 _mesa_glsl_error(locp, state,
1100 "invariant qualifiers can be used only "
1101 "in interface block members for shader "
1102 "inputs or outputs");
1103 }
1104 }
1105
1106 static void
1107 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier *q)
1108 {
1109 if (q->is_subroutine_decl())
1110 printf("subroutine ");
1111
1112 if (q->subroutine_list) {
1113 printf("subroutine (");
1114 q->subroutine_list->print();
1115 printf(")");
1116 }
1117
1118 if (q->flags.q.constant)
1119 printf("const ");
1120
1121 if (q->flags.q.invariant)
1122 printf("invariant ");
1123
1124 if (q->flags.q.attribute)
1125 printf("attribute ");
1126
1127 if (q->flags.q.varying)
1128 printf("varying ");
1129
1130 if (q->flags.q.in && q->flags.q.out)
1131 printf("inout ");
1132 else {
1133 if (q->flags.q.in)
1134 printf("in ");
1135
1136 if (q->flags.q.out)
1137 printf("out ");
1138 }
1139
1140 if (q->flags.q.centroid)
1141 printf("centroid ");
1142 if (q->flags.q.sample)
1143 printf("sample ");
1144 if (q->flags.q.patch)
1145 printf("patch ");
1146 if (q->flags.q.uniform)
1147 printf("uniform ");
1148 if (q->flags.q.buffer)
1149 printf("buffer ");
1150 if (q->flags.q.smooth)
1151 printf("smooth ");
1152 if (q->flags.q.flat)
1153 printf("flat ");
1154 if (q->flags.q.noperspective)
1155 printf("noperspective ");
1156 }
1157
1158
1159 void
1160 ast_node::print(void) const
1161 {
1162 printf("unhandled node ");
1163 }
1164
1165
1166 ast_node::ast_node(void)
1167 {
1168 this->location.source = 0;
1169 this->location.first_line = 0;
1170 this->location.first_column = 0;
1171 this->location.last_line = 0;
1172 this->location.last_column = 0;
1173 }
1174
1175
1176 static void
1177 ast_opt_array_dimensions_print(const ast_array_specifier *array_specifier)
1178 {
1179 if (array_specifier)
1180 array_specifier->print();
1181 }
1182
1183
1184 void
1185 ast_compound_statement::print(void) const
1186 {
1187 printf("{\n");
1188
1189 foreach_list_typed(ast_node, ast, link, &this->statements) {
1190 ast->print();
1191 }
1192
1193 printf("}\n");
1194 }
1195
1196
1197 ast_compound_statement::ast_compound_statement(int new_scope,
1198 ast_node *statements)
1199 {
1200 this->new_scope = new_scope;
1201
1202 if (statements != NULL) {
1203 this->statements.push_degenerate_list_at_head(&statements->link);
1204 }
1205 }
1206
1207
1208 void
1209 ast_expression::print(void) const
1210 {
1211 switch (oper) {
1212 case ast_assign:
1213 case ast_mul_assign:
1214 case ast_div_assign:
1215 case ast_mod_assign:
1216 case ast_add_assign:
1217 case ast_sub_assign:
1218 case ast_ls_assign:
1219 case ast_rs_assign:
1220 case ast_and_assign:
1221 case ast_xor_assign:
1222 case ast_or_assign:
1223 subexpressions[0]->print();
1224 printf("%s ", operator_string(oper));
1225 subexpressions[1]->print();
1226 break;
1227
1228 case ast_field_selection:
1229 subexpressions[0]->print();
1230 printf(". %s ", primary_expression.identifier);
1231 break;
1232
1233 case ast_plus:
1234 case ast_neg:
1235 case ast_bit_not:
1236 case ast_logic_not:
1237 case ast_pre_inc:
1238 case ast_pre_dec:
1239 printf("%s ", operator_string(oper));
1240 subexpressions[0]->print();
1241 break;
1242
1243 case ast_post_inc:
1244 case ast_post_dec:
1245 subexpressions[0]->print();
1246 printf("%s ", operator_string(oper));
1247 break;
1248
1249 case ast_conditional:
1250 subexpressions[0]->print();
1251 printf("? ");
1252 subexpressions[1]->print();
1253 printf(": ");
1254 subexpressions[2]->print();
1255 break;
1256
1257 case ast_array_index:
1258 subexpressions[0]->print();
1259 printf("[ ");
1260 subexpressions[1]->print();
1261 printf("] ");
1262 break;
1263
1264 case ast_function_call: {
1265 subexpressions[0]->print();
1266 printf("( ");
1267
1268 foreach_list_typed (ast_node, ast, link, &this->expressions) {
1269 if (&ast->link != this->expressions.get_head())
1270 printf(", ");
1271
1272 ast->print();
1273 }
1274
1275 printf(") ");
1276 break;
1277 }
1278
1279 case ast_identifier:
1280 printf("%s ", primary_expression.identifier);
1281 break;
1282
1283 case ast_int_constant:
1284 printf("%d ", primary_expression.int_constant);
1285 break;
1286
1287 case ast_uint_constant:
1288 printf("%u ", primary_expression.uint_constant);
1289 break;
1290
1291 case ast_float_constant:
1292 printf("%f ", primary_expression.float_constant);
1293 break;
1294
1295 case ast_double_constant:
1296 printf("%f ", primary_expression.double_constant);
1297 break;
1298
1299 case ast_int64_constant:
1300 printf("%" PRId64 " ", primary_expression.int64_constant);
1301 break;
1302
1303 case ast_uint64_constant:
1304 printf("%" PRIu64 " ", primary_expression.uint64_constant);
1305 break;
1306
1307 case ast_bool_constant:
1308 printf("%s ",
1309 primary_expression.bool_constant
1310 ? "true" : "false");
1311 break;
1312
1313 case ast_sequence: {
1314 printf("( ");
1315 foreach_list_typed (ast_node, ast, link, & this->expressions) {
1316 if (&ast->link != this->expressions.get_head())
1317 printf(", ");
1318
1319 ast->print();
1320 }
1321 printf(") ");
1322 break;
1323 }
1324
1325 case ast_aggregate: {
1326 printf("{ ");
1327 foreach_list_typed (ast_node, ast, link, & this->expressions) {
1328 if (&ast->link != this->expressions.get_head())
1329 printf(", ");
1330
1331 ast->print();
1332 }
1333 printf("} ");
1334 break;
1335 }
1336
1337 default:
1338 assert(0);
1339 break;
1340 }
1341 }
1342
1343 ast_expression::ast_expression(int oper,
1344 ast_expression *ex0,
1345 ast_expression *ex1,
1346 ast_expression *ex2) :
1347 primary_expression()
1348 {
1349 this->oper = ast_operators(oper);
1350 this->subexpressions[0] = ex0;
1351 this->subexpressions[1] = ex1;
1352 this->subexpressions[2] = ex2;
1353 this->non_lvalue_description = NULL;
1354 this->is_lhs = false;
1355 }
1356
1357
1358 void
1359 ast_expression_statement::print(void) const
1360 {
1361 if (expression)
1362 expression->print();
1363
1364 printf("; ");
1365 }
1366
1367
1368 ast_expression_statement::ast_expression_statement(ast_expression *ex) :
1369 expression(ex)
1370 {
1371 /* empty */
1372 }
1373
1374
1375 void
1376 ast_function::print(void) const
1377 {
1378 return_type->print();
1379 printf(" %s (", identifier);
1380
1381 foreach_list_typed(ast_node, ast, link, & this->parameters) {
1382 ast->print();
1383 }
1384
1385 printf(")");
1386 }
1387
1388
1389 ast_function::ast_function(void)
1390 : return_type(NULL), identifier(NULL), is_definition(false),
1391 signature(NULL)
1392 {
1393 /* empty */
1394 }
1395
1396
1397 void
1398 ast_fully_specified_type::print(void) const
1399 {
1400 _mesa_ast_type_qualifier_print(& qualifier);
1401 specifier->print();
1402 }
1403
1404
1405 void
1406 ast_parameter_declarator::print(void) const
1407 {
1408 type->print();
1409 if (identifier)
1410 printf("%s ", identifier);
1411 ast_opt_array_dimensions_print(array_specifier);
1412 }
1413
1414
1415 void
1416 ast_function_definition::print(void) const
1417 {
1418 prototype->print();
1419 body->print();
1420 }
1421
1422
1423 void
1424 ast_declaration::print(void) const
1425 {
1426 printf("%s ", identifier);
1427 ast_opt_array_dimensions_print(array_specifier);
1428
1429 if (initializer) {
1430 printf("= ");
1431 initializer->print();
1432 }
1433 }
1434
1435
1436 ast_declaration::ast_declaration(const char *identifier,
1437 ast_array_specifier *array_specifier,
1438 ast_expression *initializer)
1439 {
1440 this->identifier = identifier;
1441 this->array_specifier = array_specifier;
1442 this->initializer = initializer;
1443 }
1444
1445
1446 void
1447 ast_declarator_list::print(void) const
1448 {
1449 assert(type || invariant);
1450
1451 if (type)
1452 type->print();
1453 else if (invariant)
1454 printf("invariant ");
1455 else
1456 printf("precise ");
1457
1458 foreach_list_typed (ast_node, ast, link, & this->declarations) {
1459 if (&ast->link != this->declarations.get_head())
1460 printf(", ");
1461
1462 ast->print();
1463 }
1464
1465 printf("; ");
1466 }
1467
1468
1469 ast_declarator_list::ast_declarator_list(ast_fully_specified_type *type)
1470 {
1471 this->type = type;
1472 this->invariant = false;
1473 this->precise = false;
1474 }
1475
1476 void
1477 ast_jump_statement::print(void) const
1478 {
1479 switch (mode) {
1480 case ast_continue:
1481 printf("continue; ");
1482 break;
1483 case ast_break:
1484 printf("break; ");
1485 break;
1486 case ast_return:
1487 printf("return ");
1488 if (opt_return_value)
1489 opt_return_value->print();
1490
1491 printf("; ");
1492 break;
1493 case ast_discard:
1494 printf("discard; ");
1495 break;
1496 }
1497 }
1498
1499
1500 ast_jump_statement::ast_jump_statement(int mode, ast_expression *return_value)
1501 : opt_return_value(NULL)
1502 {
1503 this->mode = ast_jump_modes(mode);
1504
1505 if (mode == ast_return)
1506 opt_return_value = return_value;
1507 }
1508
1509
1510 void
1511 ast_selection_statement::print(void) const
1512 {
1513 printf("if ( ");
1514 condition->print();
1515 printf(") ");
1516
1517 then_statement->print();
1518
1519 if (else_statement) {
1520 printf("else ");
1521 else_statement->print();
1522 }
1523 }
1524
1525
1526 ast_selection_statement::ast_selection_statement(ast_expression *condition,
1527 ast_node *then_statement,
1528 ast_node *else_statement)
1529 {
1530 this->condition = condition;
1531 this->then_statement = then_statement;
1532 this->else_statement = else_statement;
1533 }
1534
1535
1536 void
1537 ast_switch_statement::print(void) const
1538 {
1539 printf("switch ( ");
1540 test_expression->print();
1541 printf(") ");
1542
1543 body->print();
1544 }
1545
1546
1547 ast_switch_statement::ast_switch_statement(ast_expression *test_expression,
1548 ast_node *body)
1549 {
1550 this->test_expression = test_expression;
1551 this->body = body;
1552 }
1553
1554
1555 void
1556 ast_switch_body::print(void) const
1557 {
1558 printf("{\n");
1559 if (stmts != NULL) {
1560 stmts->print();
1561 }
1562 printf("}\n");
1563 }
1564
1565
1566 ast_switch_body::ast_switch_body(ast_case_statement_list *stmts)
1567 {
1568 this->stmts = stmts;
1569 }
1570
1571
1572 void ast_case_label::print(void) const
1573 {
1574 if (test_value != NULL) {
1575 printf("case ");
1576 test_value->print();
1577 printf(": ");
1578 } else {
1579 printf("default: ");
1580 }
1581 }
1582
1583
1584 ast_case_label::ast_case_label(ast_expression *test_value)
1585 {
1586 this->test_value = test_value;
1587 }
1588
1589
1590 void ast_case_label_list::print(void) const
1591 {
1592 foreach_list_typed(ast_node, ast, link, & this->labels) {
1593 ast->print();
1594 }
1595 printf("\n");
1596 }
1597
1598
1599 ast_case_label_list::ast_case_label_list(void)
1600 {
1601 }
1602
1603
1604 void ast_case_statement::print(void) const
1605 {
1606 labels->print();
1607 foreach_list_typed(ast_node, ast, link, & this->stmts) {
1608 ast->print();
1609 printf("\n");
1610 }
1611 }
1612
1613
1614 ast_case_statement::ast_case_statement(ast_case_label_list *labels)
1615 {
1616 this->labels = labels;
1617 }
1618
1619
1620 void ast_case_statement_list::print(void) const
1621 {
1622 foreach_list_typed(ast_node, ast, link, & this->cases) {
1623 ast->print();
1624 }
1625 }
1626
1627
1628 ast_case_statement_list::ast_case_statement_list(void)
1629 {
1630 }
1631
1632
1633 void
1634 ast_iteration_statement::print(void) const
1635 {
1636 switch (mode) {
1637 case ast_for:
1638 printf("for( ");
1639 if (init_statement)
1640 init_statement->print();
1641 printf("; ");
1642
1643 if (condition)
1644 condition->print();
1645 printf("; ");
1646
1647 if (rest_expression)
1648 rest_expression->print();
1649 printf(") ");
1650
1651 body->print();
1652 break;
1653
1654 case ast_while:
1655 printf("while ( ");
1656 if (condition)
1657 condition->print();
1658 printf(") ");
1659 body->print();
1660 break;
1661
1662 case ast_do_while:
1663 printf("do ");
1664 body->print();
1665 printf("while ( ");
1666 if (condition)
1667 condition->print();
1668 printf("); ");
1669 break;
1670 }
1671 }
1672
1673
1674 ast_iteration_statement::ast_iteration_statement(int mode,
1675 ast_node *init,
1676 ast_node *condition,
1677 ast_expression *rest_expression,
1678 ast_node *body)
1679 {
1680 this->mode = ast_iteration_modes(mode);
1681 this->init_statement = init;
1682 this->condition = condition;
1683 this->rest_expression = rest_expression;
1684 this->body = body;
1685 }
1686
1687
1688 void
1689 ast_struct_specifier::print(void) const
1690 {
1691 printf("struct %s { ", name);
1692 foreach_list_typed(ast_node, ast, link, &this->declarations) {
1693 ast->print();
1694 }
1695 printf("} ");
1696 }
1697
1698
1699 ast_struct_specifier::ast_struct_specifier(const char *identifier,
1700 ast_declarator_list *declarator_list)
1701 : name(identifier), layout(NULL), declarations(), is_declaration(true),
1702 type(NULL)
1703 {
1704 this->declarations.push_degenerate_list_at_head(&declarator_list->link);
1705 }
1706
1707 void ast_subroutine_list::print(void) const
1708 {
1709 foreach_list_typed (ast_node, ast, link, & this->declarations) {
1710 if (&ast->link != this->declarations.get_head())
1711 printf(", ");
1712 ast->print();
1713 }
1714 }
1715
1716 static void
1717 set_shader_inout_layout(struct gl_shader *shader,
1718 struct _mesa_glsl_parse_state *state)
1719 {
1720 /* Should have been prevented by the parser. */
1721 if (shader->Stage != MESA_SHADER_GEOMETRY &&
1722 shader->Stage != MESA_SHADER_TESS_EVAL &&
1723 shader->Stage != MESA_SHADER_COMPUTE) {
1724 assert(!state->in_qualifier->flags.i);
1725 }
1726
1727 if (shader->Stage != MESA_SHADER_COMPUTE) {
1728 /* Should have been prevented by the parser. */
1729 assert(!state->cs_input_local_size_specified);
1730 assert(!state->cs_input_local_size_variable_specified);
1731 assert(state->cs_derivative_group == DERIVATIVE_GROUP_NONE);
1732 }
1733
1734 if (shader->Stage != MESA_SHADER_FRAGMENT) {
1735 /* Should have been prevented by the parser. */
1736 assert(!state->fs_uses_gl_fragcoord);
1737 assert(!state->fs_redeclares_gl_fragcoord);
1738 assert(!state->fs_pixel_center_integer);
1739 assert(!state->fs_origin_upper_left);
1740 assert(!state->fs_early_fragment_tests);
1741 assert(!state->fs_inner_coverage);
1742 assert(!state->fs_post_depth_coverage);
1743 assert(!state->fs_pixel_interlock_ordered);
1744 assert(!state->fs_pixel_interlock_unordered);
1745 assert(!state->fs_sample_interlock_ordered);
1746 assert(!state->fs_sample_interlock_unordered);
1747 }
1748
1749 for (unsigned i = 0; i < MAX_FEEDBACK_BUFFERS; i++) {
1750 if (state->out_qualifier->out_xfb_stride[i]) {
1751 unsigned xfb_stride;
1752 if (state->out_qualifier->out_xfb_stride[i]->
1753 process_qualifier_constant(state, "xfb_stride", &xfb_stride,
1754 true)) {
1755 shader->TransformFeedbackBufferStride[i] = xfb_stride;
1756 }
1757 }
1758 }
1759
1760 switch (shader->Stage) {
1761 case MESA_SHADER_TESS_CTRL:
1762 shader->info.TessCtrl.VerticesOut = 0;
1763 if (state->tcs_output_vertices_specified) {
1764 unsigned vertices;
1765 if (state->out_qualifier->vertices->
1766 process_qualifier_constant(state, "vertices", &vertices,
1767 false)) {
1768
1769 YYLTYPE loc = state->out_qualifier->vertices->get_location();
1770 if (vertices > state->Const.MaxPatchVertices) {
1771 _mesa_glsl_error(&loc, state, "vertices (%d) exceeds "
1772 "GL_MAX_PATCH_VERTICES", vertices);
1773 }
1774 shader->info.TessCtrl.VerticesOut = vertices;
1775 }
1776 }
1777 break;
1778 case MESA_SHADER_TESS_EVAL:
1779 shader->info.TessEval.PrimitiveMode = PRIM_UNKNOWN;
1780 if (state->in_qualifier->flags.q.prim_type)
1781 shader->info.TessEval.PrimitiveMode = state->in_qualifier->prim_type;
1782
1783 shader->info.TessEval.Spacing = TESS_SPACING_UNSPECIFIED;
1784 if (state->in_qualifier->flags.q.vertex_spacing)
1785 shader->info.TessEval.Spacing = state->in_qualifier->vertex_spacing;
1786
1787 shader->info.TessEval.VertexOrder = 0;
1788 if (state->in_qualifier->flags.q.ordering)
1789 shader->info.TessEval.VertexOrder = state->in_qualifier->ordering;
1790
1791 shader->info.TessEval.PointMode = -1;
1792 if (state->in_qualifier->flags.q.point_mode)
1793 shader->info.TessEval.PointMode = state->in_qualifier->point_mode;
1794 break;
1795 case MESA_SHADER_GEOMETRY:
1796 shader->info.Geom.VerticesOut = -1;
1797 if (state->out_qualifier->flags.q.max_vertices) {
1798 unsigned qual_max_vertices;
1799 if (state->out_qualifier->max_vertices->
1800 process_qualifier_constant(state, "max_vertices",
1801 &qual_max_vertices, true)) {
1802
1803 if (qual_max_vertices > state->Const.MaxGeometryOutputVertices) {
1804 YYLTYPE loc = state->out_qualifier->max_vertices->get_location();
1805 _mesa_glsl_error(&loc, state,
1806 "maximum output vertices (%d) exceeds "
1807 "GL_MAX_GEOMETRY_OUTPUT_VERTICES",
1808 qual_max_vertices);
1809 }
1810 shader->info.Geom.VerticesOut = qual_max_vertices;
1811 }
1812 }
1813
1814 if (state->gs_input_prim_type_specified) {
1815 shader->info.Geom.InputType = state->in_qualifier->prim_type;
1816 } else {
1817 shader->info.Geom.InputType = PRIM_UNKNOWN;
1818 }
1819
1820 if (state->out_qualifier->flags.q.prim_type) {
1821 shader->info.Geom.OutputType = state->out_qualifier->prim_type;
1822 } else {
1823 shader->info.Geom.OutputType = PRIM_UNKNOWN;
1824 }
1825
1826 shader->info.Geom.Invocations = 0;
1827 if (state->in_qualifier->flags.q.invocations) {
1828 unsigned invocations;
1829 if (state->in_qualifier->invocations->
1830 process_qualifier_constant(state, "invocations",
1831 &invocations, false)) {
1832
1833 YYLTYPE loc = state->in_qualifier->invocations->get_location();
1834 if (invocations > state->Const.MaxGeometryShaderInvocations) {
1835 _mesa_glsl_error(&loc, state,
1836 "invocations (%d) exceeds "
1837 "GL_MAX_GEOMETRY_SHADER_INVOCATIONS",
1838 invocations);
1839 }
1840 shader->info.Geom.Invocations = invocations;
1841 }
1842 }
1843 break;
1844
1845 case MESA_SHADER_COMPUTE:
1846 if (state->cs_input_local_size_specified) {
1847 for (int i = 0; i < 3; i++)
1848 shader->info.Comp.LocalSize[i] = state->cs_input_local_size[i];
1849 } else {
1850 for (int i = 0; i < 3; i++)
1851 shader->info.Comp.LocalSize[i] = 0;
1852 }
1853
1854 shader->info.Comp.LocalSizeVariable =
1855 state->cs_input_local_size_variable_specified;
1856
1857 shader->info.Comp.DerivativeGroup = state->cs_derivative_group;
1858
1859 if (state->NV_compute_shader_derivatives_enable) {
1860 /* We allow multiple cs_input_layout nodes, but do not store them in
1861 * a convenient place, so for now live with an empty location error.
1862 */
1863 YYLTYPE loc = {0};
1864 if (shader->info.Comp.DerivativeGroup == DERIVATIVE_GROUP_QUADS) {
1865 if (shader->info.Comp.LocalSize[0] % 2 != 0) {
1866 _mesa_glsl_error(&loc, state, "derivative_group_quadsNV must be used with a "
1867 "local group size whose first dimension "
1868 "is a multiple of 2\n");
1869 }
1870 if (shader->info.Comp.LocalSize[1] % 2 != 0) {
1871 _mesa_glsl_error(&loc, state, "derivative_group_quadsNV must be used with a "
1872 "local group size whose second dimension "
1873 "is a multiple of 2\n");
1874 }
1875 } else if (shader->info.Comp.DerivativeGroup == DERIVATIVE_GROUP_LINEAR) {
1876 if ((shader->info.Comp.LocalSize[0] *
1877 shader->info.Comp.LocalSize[1] *
1878 shader->info.Comp.LocalSize[2]) % 4 != 0) {
1879 _mesa_glsl_error(&loc, state, "derivative_group_linearNV must be used with a "
1880 "local group size whose total number of invocations "
1881 "is a multiple of 4\n");
1882 }
1883 }
1884 }
1885
1886 break;
1887
1888 case MESA_SHADER_FRAGMENT:
1889 shader->redeclares_gl_fragcoord = state->fs_redeclares_gl_fragcoord;
1890 shader->uses_gl_fragcoord = state->fs_uses_gl_fragcoord;
1891 shader->pixel_center_integer = state->fs_pixel_center_integer;
1892 shader->origin_upper_left = state->fs_origin_upper_left;
1893 shader->ARB_fragment_coord_conventions_enable =
1894 state->ARB_fragment_coord_conventions_enable;
1895 shader->EarlyFragmentTests = state->fs_early_fragment_tests;
1896 shader->InnerCoverage = state->fs_inner_coverage;
1897 shader->PostDepthCoverage = state->fs_post_depth_coverage;
1898 shader->PixelInterlockOrdered = state->fs_pixel_interlock_ordered;
1899 shader->PixelInterlockUnordered = state->fs_pixel_interlock_unordered;
1900 shader->SampleInterlockOrdered = state->fs_sample_interlock_ordered;
1901 shader->SampleInterlockUnordered = state->fs_sample_interlock_unordered;
1902 shader->BlendSupport = state->fs_blend_support;
1903 break;
1904
1905 default:
1906 /* Nothing to do. */
1907 break;
1908 }
1909
1910 shader->bindless_sampler = state->bindless_sampler_specified;
1911 shader->bindless_image = state->bindless_image_specified;
1912 shader->bound_sampler = state->bound_sampler_specified;
1913 shader->bound_image = state->bound_image_specified;
1914 }
1915
1916 /* src can be NULL if only the symbols found in the exec_list should be
1917 * copied
1918 */
1919 void
1920 _mesa_glsl_copy_symbols_from_table(struct exec_list *shader_ir,
1921 struct glsl_symbol_table *src,
1922 struct glsl_symbol_table *dest)
1923 {
1924 foreach_in_list (ir_instruction, ir, shader_ir) {
1925 switch (ir->ir_type) {
1926 case ir_type_function:
1927 dest->add_function((ir_function *) ir);
1928 break;
1929 case ir_type_variable: {
1930 ir_variable *const var = (ir_variable *) ir;
1931
1932 if (var->data.mode != ir_var_temporary)
1933 dest->add_variable(var);
1934 break;
1935 }
1936 default:
1937 break;
1938 }
1939 }
1940
1941 if (src != NULL) {
1942 /* Explicitly copy the gl_PerVertex interface definitions because these
1943 * are needed to check they are the same during the interstage link.
1944 * They can’t necessarily be found via the exec_list because the members
1945 * might not be referenced. The GL spec still requires that they match
1946 * in that case.
1947 */
1948 const glsl_type *iface =
1949 src->get_interface("gl_PerVertex", ir_var_shader_in);
1950 if (iface)
1951 dest->add_interface(iface->name, iface, ir_var_shader_in);
1952
1953 iface = src->get_interface("gl_PerVertex", ir_var_shader_out);
1954 if (iface)
1955 dest->add_interface(iface->name, iface, ir_var_shader_out);
1956 }
1957 }
1958
1959 extern "C" {
1960
1961 static void
1962 assign_subroutine_indexes(struct _mesa_glsl_parse_state *state)
1963 {
1964 int j, k;
1965 int index = 0;
1966
1967 for (j = 0; j < state->num_subroutines; j++) {
1968 while (state->subroutines[j]->subroutine_index == -1) {
1969 for (k = 0; k < state->num_subroutines; k++) {
1970 if (state->subroutines[k]->subroutine_index == index)
1971 break;
1972 else if (k == state->num_subroutines - 1) {
1973 state->subroutines[j]->subroutine_index = index;
1974 }
1975 }
1976 index++;
1977 }
1978 }
1979 }
1980
1981 static void
1982 add_builtin_defines(struct _mesa_glsl_parse_state *state,
1983 void (*add_builtin_define)(struct glcpp_parser *, const char *, int),
1984 struct glcpp_parser *data,
1985 unsigned version,
1986 bool es)
1987 {
1988 unsigned gl_version = state->ctx->Extensions.Version;
1989 gl_api api = state->ctx->API;
1990
1991 if (gl_version != 0xff) {
1992 unsigned i;
1993 for (i = 0; i < state->num_supported_versions; i++) {
1994 if (state->supported_versions[i].ver == version &&
1995 state->supported_versions[i].es == es) {
1996 gl_version = state->supported_versions[i].gl_ver;
1997 break;
1998 }
1999 }
2000
2001 if (i == state->num_supported_versions)
2002 return;
2003 }
2004
2005 if (es)
2006 api = API_OPENGLES2;
2007
2008 for (unsigned i = 0;
2009 i < ARRAY_SIZE(_mesa_glsl_supported_extensions); ++i) {
2010 const _mesa_glsl_extension *extension
2011 = &_mesa_glsl_supported_extensions[i];
2012 if (extension->compatible_with_state(state, api, gl_version)) {
2013 add_builtin_define(data, extension->name, 1);
2014 }
2015 }
2016 }
2017
2018 /* Implements parsing checks that we can't do during parsing */
2019 static void
2020 do_late_parsing_checks(struct _mesa_glsl_parse_state *state)
2021 {
2022 if (state->stage == MESA_SHADER_COMPUTE && !state->has_compute_shader()) {
2023 YYLTYPE loc;
2024 memset(&loc, 0, sizeof(loc));
2025 _mesa_glsl_error(&loc, state, "Compute shaders require "
2026 "GLSL 4.30 or GLSL ES 3.10");
2027 }
2028 }
2029
2030 static void
2031 opt_shader_and_create_symbol_table(struct gl_context *ctx,
2032 struct glsl_symbol_table *source_symbols,
2033 struct gl_shader *shader)
2034 {
2035 assert(shader->CompileStatus != COMPILE_FAILURE &&
2036 !shader->ir->is_empty());
2037
2038 struct gl_shader_compiler_options *options =
2039 &ctx->Const.ShaderCompilerOptions[shader->Stage];
2040
2041 /* Do some optimization at compile time to reduce shader IR size
2042 * and reduce later work if the same shader is linked multiple times
2043 */
2044 if (ctx->Const.GLSLOptimizeConservatively) {
2045 /* Run it just once. */
2046 do_common_optimization(shader->ir, false, false, options,
2047 ctx->Const.NativeIntegers);
2048 } else {
2049 /* Repeat it until it stops making changes. */
2050 while (do_common_optimization(shader->ir, false, false, options,
2051 ctx->Const.NativeIntegers))
2052 ;
2053 }
2054
2055 validate_ir_tree(shader->ir);
2056
2057 enum ir_variable_mode other;
2058 switch (shader->Stage) {
2059 case MESA_SHADER_VERTEX:
2060 other = ir_var_shader_in;
2061 break;
2062 case MESA_SHADER_FRAGMENT:
2063 other = ir_var_shader_out;
2064 break;
2065 default:
2066 /* Something invalid to ensure optimize_dead_builtin_uniforms
2067 * doesn't remove anything other than uniforms or constants.
2068 */
2069 other = ir_var_mode_count;
2070 break;
2071 }
2072
2073 optimize_dead_builtin_variables(shader->ir, other);
2074
2075 validate_ir_tree(shader->ir);
2076
2077 /* Retain any live IR, but trash the rest. */
2078 reparent_ir(shader->ir, shader->ir);
2079
2080 /* Destroy the symbol table. Create a new symbol table that contains only
2081 * the variables and functions that still exist in the IR. The symbol
2082 * table will be used later during linking.
2083 *
2084 * There must NOT be any freed objects still referenced by the symbol
2085 * table. That could cause the linker to dereference freed memory.
2086 *
2087 * We don't have to worry about types or interface-types here because those
2088 * are fly-weights that are looked up by glsl_type.
2089 */
2090 _mesa_glsl_copy_symbols_from_table(shader->ir, source_symbols,
2091 shader->symbols);
2092 }
2093
2094 void
2095 _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
2096 bool dump_ast, bool dump_hir, bool force_recompile)
2097 {
2098 const char *source = force_recompile && shader->FallbackSource ?
2099 shader->FallbackSource : shader->Source;
2100
2101 if (!force_recompile) {
2102 if (ctx->Cache) {
2103 char buf[41];
2104 disk_cache_compute_key(ctx->Cache, source, strlen(source),
2105 shader->sha1);
2106 if (disk_cache_has_key(ctx->Cache, shader->sha1)) {
2107 /* We've seen this shader before and know it compiles */
2108 if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
2109 _mesa_sha1_format(buf, shader->sha1);
2110 fprintf(stderr, "deferring compile of shader: %s\n", buf);
2111 }
2112 shader->CompileStatus = COMPILE_SKIPPED;
2113
2114 free((void *)shader->FallbackSource);
2115 shader->FallbackSource = NULL;
2116 return;
2117 }
2118 }
2119 } else {
2120 /* We should only ever end up here if a re-compile has been forced by a
2121 * shader cache miss. In which case we can skip the compile if its
2122 * already be done by a previous fallback or the initial compile call.
2123 */
2124 if (shader->CompileStatus == COMPILE_SUCCESS)
2125 return;
2126 }
2127
2128 struct _mesa_glsl_parse_state *state =
2129 new(shader) _mesa_glsl_parse_state(ctx, shader->Stage, shader);
2130
2131 if (ctx->Const.GenerateTemporaryNames)
2132 (void) p_atomic_cmpxchg(&ir_variable::temporaries_allocate_names,
2133 false, true);
2134
2135 state->error = glcpp_preprocess(state, &source, &state->info_log,
2136 add_builtin_defines, state, ctx);
2137
2138 if (!state->error) {
2139 _mesa_glsl_lexer_ctor(state, source);
2140 _mesa_glsl_parse(state);
2141 _mesa_glsl_lexer_dtor(state);
2142 do_late_parsing_checks(state);
2143 }
2144
2145 if (dump_ast) {
2146 foreach_list_typed(ast_node, ast, link, &state->translation_unit) {
2147 ast->print();
2148 }
2149 printf("\n\n");
2150 }
2151
2152 ralloc_free(shader->ir);
2153 shader->ir = new(shader) exec_list;
2154 if (!state->error && !state->translation_unit.is_empty())
2155 _mesa_ast_to_hir(shader->ir, state);
2156
2157 if (!state->error) {
2158 validate_ir_tree(shader->ir);
2159
2160 /* Print out the unoptimized IR. */
2161 if (dump_hir) {
2162 _mesa_print_ir(stdout, shader->ir, state);
2163 }
2164 }
2165
2166 if (shader->InfoLog)
2167 ralloc_free(shader->InfoLog);
2168
2169 if (!state->error)
2170 set_shader_inout_layout(shader, state);
2171
2172 shader->symbols = new(shader->ir) glsl_symbol_table;
2173 shader->CompileStatus = state->error ? COMPILE_FAILURE : COMPILE_SUCCESS;
2174 shader->InfoLog = state->info_log;
2175 shader->Version = state->language_version;
2176 shader->IsES = state->es_shader;
2177
2178 if (!state->error && !shader->ir->is_empty()) {
2179 assign_subroutine_indexes(state);
2180 lower_subroutine(shader->ir, state);
2181 opt_shader_and_create_symbol_table(ctx, state->symbols, shader);
2182 }
2183
2184 if (!force_recompile) {
2185 free((void *)shader->FallbackSource);
2186 shader->FallbackSource = NULL;
2187 }
2188
2189 delete state->symbols;
2190 ralloc_free(state);
2191
2192 if (ctx->Cache && shader->CompileStatus == COMPILE_SUCCESS) {
2193 char sha1_buf[41];
2194 disk_cache_put_key(ctx->Cache, shader->sha1);
2195 if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
2196 _mesa_sha1_format(sha1_buf, shader->sha1);
2197 fprintf(stderr, "marking shader: %s\n", sha1_buf);
2198 }
2199 }
2200 }
2201
2202 } /* extern "C" */
2203 /**
2204 * Do the set of common optimizations passes
2205 *
2206 * \param ir List of instructions to be optimized
2207 * \param linked Is the shader linked? This enables
2208 * optimizations passes that remove code at
2209 * global scope and could cause linking to
2210 * fail.
2211 * \param uniform_locations_assigned Have locations already been assigned for
2212 * uniforms? This prevents the declarations
2213 * of unused uniforms from being removed.
2214 * The setting of this flag only matters if
2215 * \c linked is \c true.
2216 * \param options The driver's preferred shader options.
2217 * \param native_integers Selects optimizations that depend on the
2218 * implementations supporting integers
2219 * natively (as opposed to supporting
2220 * integers in floating point registers).
2221 */
2222 bool
2223 do_common_optimization(exec_list *ir, bool linked,
2224 bool uniform_locations_assigned,
2225 const struct gl_shader_compiler_options *options,
2226 bool native_integers)
2227 {
2228 const bool debug = false;
2229 GLboolean progress = GL_FALSE;
2230
2231 #define OPT(PASS, ...) do { \
2232 if (debug) { \
2233 fprintf(stderr, "START GLSL optimization %s\n", #PASS); \
2234 const bool opt_progress = PASS(__VA_ARGS__); \
2235 progress = opt_progress || progress; \
2236 if (opt_progress) \
2237 _mesa_print_ir(stderr, ir, NULL); \
2238 fprintf(stderr, "GLSL optimization %s: %s progress\n", \
2239 #PASS, opt_progress ? "made" : "no"); \
2240 } else { \
2241 progress = PASS(__VA_ARGS__) || progress; \
2242 } \
2243 } while (false)
2244
2245 OPT(lower_instructions, ir, SUB_TO_ADD_NEG);
2246
2247 if (linked) {
2248 OPT(do_function_inlining, ir);
2249 OPT(do_dead_functions, ir);
2250 OPT(do_structure_splitting, ir);
2251 }
2252 propagate_invariance(ir);
2253 OPT(do_if_simplification, ir);
2254 OPT(opt_flatten_nested_if_blocks, ir);
2255 OPT(opt_conditional_discard, ir);
2256 OPT(do_copy_propagation_elements, ir);
2257
2258 if (options->OptimizeForAOS && !linked)
2259 OPT(opt_flip_matrices, ir);
2260
2261 if (linked && options->OptimizeForAOS) {
2262 OPT(do_vectorize, ir);
2263 }
2264
2265 if (linked)
2266 OPT(do_dead_code, ir, uniform_locations_assigned);
2267 else
2268 OPT(do_dead_code_unlinked, ir);
2269 OPT(do_dead_code_local, ir);
2270 OPT(do_tree_grafting, ir);
2271 OPT(do_constant_propagation, ir);
2272 if (linked)
2273 OPT(do_constant_variable, ir);
2274 else
2275 OPT(do_constant_variable_unlinked, ir);
2276 OPT(do_constant_folding, ir);
2277 OPT(do_minmax_prune, ir);
2278 OPT(do_rebalance_tree, ir);
2279 OPT(do_algebraic, ir, native_integers, options);
2280 OPT(do_lower_jumps, ir, true, true, options->EmitNoMainReturn,
2281 options->EmitNoCont, options->EmitNoLoops);
2282 OPT(do_vec_index_to_swizzle, ir);
2283 OPT(lower_vector_insert, ir, false);
2284 OPT(optimize_swizzles, ir);
2285
2286 OPT(optimize_split_arrays, ir, linked);
2287 OPT(optimize_redundant_jumps, ir);
2288
2289 if (options->MaxUnrollIterations) {
2290 loop_state *ls = analyze_loop_variables(ir);
2291 if (ls->loop_found) {
2292 bool loop_progress = unroll_loops(ir, ls, options);
2293 while (loop_progress) {
2294 loop_progress = false;
2295 loop_progress |= do_constant_propagation(ir);
2296 loop_progress |= do_if_simplification(ir);
2297
2298 /* Some drivers only call do_common_optimization() once rather
2299 * than in a loop. So we must call do_lower_jumps() after
2300 * unrolling a loop because for drivers that use LLVM validation
2301 * will fail if a jump is not the last instruction in the block.
2302 * For example the following will fail LLVM validation:
2303 *
2304 * (loop (
2305 * ...
2306 * break
2307 * (assign (x) (var_ref v124) (expression int + (var_ref v124)
2308 * (constant int (1)) ) )
2309 * ))
2310 */
2311 loop_progress |= do_lower_jumps(ir, true, true,
2312 options->EmitNoMainReturn,
2313 options->EmitNoCont,
2314 options->EmitNoLoops);
2315 }
2316 progress |= loop_progress;
2317 }
2318 delete ls;
2319 }
2320
2321 #undef OPT
2322
2323 return progress;
2324 }
2325
2326 extern "C" {
2327
2328 /**
2329 * To be called at GL context ctor.
2330 */
2331 void
2332 _mesa_init_shader_compiler_types(void)
2333 {
2334 glsl_type_singleton_init_or_ref();
2335 }
2336
2337 /**
2338 * To be called at GL context dtor.
2339 */
2340 void
2341 _mesa_destroy_shader_compiler_types(void)
2342 {
2343 glsl_type_singleton_decref();
2344 }
2345
2346 /**
2347 * To be called at GL teardown time, this frees compiler datastructures.
2348 *
2349 * After calling this, any previously compiled shaders and shader
2350 * programs would be invalid. So this should happen at approximately
2351 * program exit.
2352 */
2353 void
2354 _mesa_destroy_shader_compiler(void)
2355 {
2356 _mesa_destroy_shader_compiler_caches();
2357 }
2358
2359 /**
2360 * Releases compiler caches to trade off performance for memory.
2361 *
2362 * Intended to be used with glReleaseShaderCompiler().
2363 */
2364 void
2365 _mesa_destroy_shader_compiler_caches(void)
2366 {
2367 _mesa_glsl_release_builtin_functions();
2368 }
2369
2370 }