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