2 * Copyright © 2008, 2009 Intel Corporation
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:
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
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.
23 #include <inttypes.h> /* for PRIx64 macro */
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"
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"
45 * Format a short human-readable description of the given GLSL version.
48 glsl_compute_version_string(void *mem_ctx
, bool is_es
, unsigned version
)
50 return ralloc_asprintf(mem_ctx
, "GLSL%s %d.%02d", is_es
? " ES" : "",
51 version
/ 100, version
% 100);
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 };
61 _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context
*_ctx
,
62 gl_shader_stage stage
,
64 : ctx(_ctx
), cs_input_local_size_specified(false), cs_input_local_size(),
67 assert(stage
< MESA_SHADER_STAGES
);
71 this->translation_unit
.make_empty();
72 this->symbols
= new(mem_ctx
) glsl_symbol_table
;
74 this->linalloc
= linear_alloc_parent(this, 0);
76 this->info_log
= ralloc_strdup(mem_ctx
, "");
78 this->loop_nesting_ast
= NULL
;
80 this->uses_builtin_functions
= false;
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;
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;
98 this->extensions
= &ctx
->Extensions
;
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
;
113 this->Const
.MaxDrawBuffers
= ctx
->Const
.MaxDrawBuffers
;
115 this->Const
.MaxDualSourceDrawBuffers
= ctx
->Const
.MaxDualSourceDrawBuffers
;
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
.MaxFragmentInputComponents
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
;
122 this->Const
.MaxGeometryTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
;
123 this->Const
.MaxGeometryOutputVertices
= ctx
->Const
.MaxGeometryOutputVertices
;
124 this->Const
.MaxGeometryTotalOutputComponents
= ctx
->Const
.MaxGeometryTotalOutputComponents
;
125 this->Const
.MaxGeometryUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxUniformComponents
;
127 this->Const
.MaxVertexAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicCounters
;
128 this->Const
.MaxTessControlAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicCounters
;
129 this->Const
.MaxTessEvaluationAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicCounters
;
130 this->Const
.MaxGeometryAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
;
131 this->Const
.MaxFragmentAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
;
132 this->Const
.MaxComputeAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicCounters
;
133 this->Const
.MaxCombinedAtomicCounters
= ctx
->Const
.MaxCombinedAtomicCounters
;
134 this->Const
.MaxAtomicBufferBindings
= ctx
->Const
.MaxAtomicBufferBindings
;
135 this->Const
.MaxVertexAtomicCounterBuffers
=
136 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
;
137 this->Const
.MaxTessControlAtomicCounterBuffers
=
138 ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicBuffers
;
139 this->Const
.MaxTessEvaluationAtomicCounterBuffers
=
140 ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicBuffers
;
141 this->Const
.MaxGeometryAtomicCounterBuffers
=
142 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
;
143 this->Const
.MaxFragmentAtomicCounterBuffers
=
144 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
;
145 this->Const
.MaxComputeAtomicCounterBuffers
=
146 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicBuffers
;
147 this->Const
.MaxCombinedAtomicCounterBuffers
=
148 ctx
->Const
.MaxCombinedAtomicBuffers
;
149 this->Const
.MaxAtomicCounterBufferSize
=
150 ctx
->Const
.MaxAtomicBufferSize
;
152 /* ARB_enhanced_layouts constants */
153 this->Const
.MaxTransformFeedbackBuffers
= ctx
->Const
.MaxTransformFeedbackBuffers
;
154 this->Const
.MaxTransformFeedbackInterleavedComponents
= ctx
->Const
.MaxTransformFeedbackInterleavedComponents
;
156 /* Compute shader constants */
157 for (unsigned i
= 0; i
< ARRAY_SIZE(this->Const
.MaxComputeWorkGroupCount
); i
++)
158 this->Const
.MaxComputeWorkGroupCount
[i
] = ctx
->Const
.MaxComputeWorkGroupCount
[i
];
159 for (unsigned i
= 0; i
< ARRAY_SIZE(this->Const
.MaxComputeWorkGroupSize
); i
++)
160 this->Const
.MaxComputeWorkGroupSize
[i
] = ctx
->Const
.MaxComputeWorkGroupSize
[i
];
162 this->Const
.MaxComputeTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
;
163 this->Const
.MaxComputeUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxUniformComponents
;
165 this->Const
.MaxImageUnits
= ctx
->Const
.MaxImageUnits
;
166 this->Const
.MaxCombinedShaderOutputResources
= ctx
->Const
.MaxCombinedShaderOutputResources
;
167 this->Const
.MaxImageSamples
= ctx
->Const
.MaxImageSamples
;
168 this->Const
.MaxVertexImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxImageUniforms
;
169 this->Const
.MaxTessControlImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxImageUniforms
;
170 this->Const
.MaxTessEvaluationImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxImageUniforms
;
171 this->Const
.MaxGeometryImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxImageUniforms
;
172 this->Const
.MaxFragmentImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxImageUniforms
;
173 this->Const
.MaxComputeImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxImageUniforms
;
174 this->Const
.MaxCombinedImageUniforms
= ctx
->Const
.MaxCombinedImageUniforms
;
176 /* ARB_viewport_array */
177 this->Const
.MaxViewports
= ctx
->Const
.MaxViewports
;
179 /* tessellation shader constants */
180 this->Const
.MaxPatchVertices
= ctx
->Const
.MaxPatchVertices
;
181 this->Const
.MaxTessGenLevel
= ctx
->Const
.MaxTessGenLevel
;
182 this->Const
.MaxTessControlInputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxInputComponents
;
183 this->Const
.MaxTessControlOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxOutputComponents
;
184 this->Const
.MaxTessControlTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxTextureImageUnits
;
185 this->Const
.MaxTessEvaluationInputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxInputComponents
;
186 this->Const
.MaxTessEvaluationOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxOutputComponents
;
187 this->Const
.MaxTessEvaluationTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxTextureImageUnits
;
188 this->Const
.MaxTessPatchComponents
= ctx
->Const
.MaxTessPatchComponents
;
189 this->Const
.MaxTessControlTotalOutputComponents
= ctx
->Const
.MaxTessControlTotalOutputComponents
;
190 this->Const
.MaxTessControlUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxUniformComponents
;
191 this->Const
.MaxTessEvaluationUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxUniformComponents
;
193 /* GL 4.5 / OES_sample_variables */
194 this->Const
.MaxSamples
= ctx
->Const
.MaxSamples
;
196 this->current_function
= NULL
;
197 this->toplevel_ir
= NULL
;
198 this->found_return
= false;
199 this->all_invariant
= false;
200 this->user_structures
= NULL
;
201 this->num_user_structures
= 0;
202 this->num_subroutines
= 0;
203 this->subroutines
= NULL
;
204 this->num_subroutine_types
= 0;
205 this->subroutine_types
= NULL
;
207 /* supported_versions should be large enough to support the known desktop
208 * GLSL versions plus 4 GLES versions (ES 1.00, ES 3.00, ES 3.10, ES 3.20)
210 STATIC_ASSERT((ARRAY_SIZE(known_desktop_glsl_versions
) + 4) ==
211 ARRAY_SIZE(this->supported_versions
));
213 /* Populate the list of supported GLSL versions */
214 /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or
215 * the OpenGL 3.2 Core context is supported, this logic will need
216 * change. Older versions of GLSL are no longer supported
217 * outside the compatibility contexts of 3.x.
219 this->num_supported_versions
= 0;
220 if (_mesa_is_desktop_gl(ctx
)) {
221 for (unsigned i
= 0; i
< ARRAY_SIZE(known_desktop_glsl_versions
); i
++) {
222 if (known_desktop_glsl_versions
[i
] <= ctx
->Const
.GLSLVersion
) {
223 this->supported_versions
[this->num_supported_versions
].ver
224 = known_desktop_glsl_versions
[i
];
225 this->supported_versions
[this->num_supported_versions
].gl_ver
226 = known_desktop_gl_versions
[i
];
227 this->supported_versions
[this->num_supported_versions
].es
= false;
228 this->num_supported_versions
++;
232 if (ctx
->API
== API_OPENGLES2
|| ctx
->Extensions
.ARB_ES2_compatibility
) {
233 this->supported_versions
[this->num_supported_versions
].ver
= 100;
234 this->supported_versions
[this->num_supported_versions
].gl_ver
= 20;
235 this->supported_versions
[this->num_supported_versions
].es
= true;
236 this->num_supported_versions
++;
238 if (_mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_ES3_compatibility
) {
239 this->supported_versions
[this->num_supported_versions
].ver
= 300;
240 this->supported_versions
[this->num_supported_versions
].gl_ver
= 30;
241 this->supported_versions
[this->num_supported_versions
].es
= true;
242 this->num_supported_versions
++;
244 if (_mesa_is_gles31(ctx
) || ctx
->Extensions
.ARB_ES3_1_compatibility
) {
245 this->supported_versions
[this->num_supported_versions
].ver
= 310;
246 this->supported_versions
[this->num_supported_versions
].gl_ver
= 31;
247 this->supported_versions
[this->num_supported_versions
].es
= true;
248 this->num_supported_versions
++;
250 if ((ctx
->API
== API_OPENGLES2
&& ctx
->Version
>= 32) ||
251 ctx
->Extensions
.ARB_ES3_2_compatibility
) {
252 this->supported_versions
[this->num_supported_versions
].ver
= 320;
253 this->supported_versions
[this->num_supported_versions
].gl_ver
= 32;
254 this->supported_versions
[this->num_supported_versions
].es
= true;
255 this->num_supported_versions
++;
258 /* Create a string for use in error messages to tell the user which GLSL
259 * versions are supported.
261 char *supported
= ralloc_strdup(this, "");
262 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
263 unsigned ver
= this->supported_versions
[i
].ver
;
264 const char *const prefix
= (i
== 0)
266 : ((i
== this->num_supported_versions
- 1) ? ", and " : ", ");
267 const char *const suffix
= (this->supported_versions
[i
].es
) ? " ES" : "";
269 ralloc_asprintf_append(& supported
, "%s%u.%02u%s",
271 ver
/ 100, ver
% 100,
275 this->supported_version_string
= supported
;
277 if (ctx
->Const
.ForceGLSLExtensionsWarn
)
278 _mesa_glsl_process_extension("all", NULL
, "warn", NULL
, this);
280 this->default_uniform_qualifier
= new(this) ast_type_qualifier();
281 this->default_uniform_qualifier
->flags
.q
.shared
= 1;
282 this->default_uniform_qualifier
->flags
.q
.column_major
= 1;
284 this->default_shader_storage_qualifier
= new(this) ast_type_qualifier();
285 this->default_shader_storage_qualifier
->flags
.q
.shared
= 1;
286 this->default_shader_storage_qualifier
->flags
.q
.column_major
= 1;
288 this->fs_uses_gl_fragcoord
= false;
289 this->fs_redeclares_gl_fragcoord
= false;
290 this->fs_origin_upper_left
= false;
291 this->fs_pixel_center_integer
= false;
292 this->fs_redeclares_gl_fragcoord_with_no_layout_qualifiers
= false;
294 this->gs_input_prim_type_specified
= false;
295 this->tcs_output_vertices_specified
= false;
296 this->gs_input_size
= 0;
297 this->in_qualifier
= new(this) ast_type_qualifier();
298 this->out_qualifier
= new(this) ast_type_qualifier();
299 this->fs_early_fragment_tests
= false;
300 this->fs_inner_coverage
= false;
301 this->fs_post_depth_coverage
= false;
302 this->fs_pixel_interlock_ordered
= false;
303 this->fs_pixel_interlock_unordered
= false;
304 this->fs_sample_interlock_ordered
= false;
305 this->fs_sample_interlock_unordered
= false;
306 this->fs_blend_support
= 0;
307 memset(this->atomic_counter_offsets
, 0,
308 sizeof(this->atomic_counter_offsets
));
309 this->allow_extension_directive_midshader
=
310 ctx
->Const
.AllowGLSLExtensionDirectiveMidShader
;
311 this->allow_builtin_variable_redeclaration
=
312 ctx
->Const
.AllowGLSLBuiltinVariableRedeclaration
;
314 this->cs_input_local_size_variable_specified
= false;
316 /* ARB_bindless_texture */
317 this->bindless_sampler_specified
= false;
318 this->bindless_image_specified
= false;
319 this->bound_sampler_specified
= false;
320 this->bound_image_specified
= false;
324 * Determine whether the current GLSL version is sufficiently high to support
325 * a certain feature, and generate an error message if it isn't.
327 * \param required_glsl_version and \c required_glsl_es_version are
328 * interpreted as they are in _mesa_glsl_parse_state::is_version().
330 * \param locp is the parser location where the error should be reported.
332 * \param fmt (and additional arguments) constitute a printf-style error
333 * message to report if the version check fails. Information about the
334 * current and required GLSL versions will be appended. So, for example, if
335 * the GLSL version being compiled is 1.20, and check_version(130, 300, locp,
336 * "foo unsupported") is called, the error message will be "foo unsupported in
337 * GLSL 1.20 (GLSL 1.30 or GLSL 3.00 ES required)".
340 _mesa_glsl_parse_state::check_version(unsigned required_glsl_version
,
341 unsigned required_glsl_es_version
,
342 YYLTYPE
*locp
, const char *fmt
, ...)
344 if (this->is_version(required_glsl_version
, required_glsl_es_version
))
349 char *problem
= ralloc_vasprintf(this, fmt
, args
);
351 const char *glsl_version_string
352 = glsl_compute_version_string(this, false, required_glsl_version
);
353 const char *glsl_es_version_string
354 = glsl_compute_version_string(this, true, required_glsl_es_version
);
355 const char *requirement_string
= "";
356 if (required_glsl_version
&& required_glsl_es_version
) {
357 requirement_string
= ralloc_asprintf(this, " (%s or %s required)",
359 glsl_es_version_string
);
360 } else if (required_glsl_version
) {
361 requirement_string
= ralloc_asprintf(this, " (%s required)",
362 glsl_version_string
);
363 } else if (required_glsl_es_version
) {
364 requirement_string
= ralloc_asprintf(this, " (%s required)",
365 glsl_es_version_string
);
367 _mesa_glsl_error(locp
, this, "%s in %s%s",
368 problem
, this->get_version_string(),
375 * Process a GLSL #version directive.
377 * \param version is the integer that follows the #version token.
379 * \param ident is a string identifier that follows the integer, if any is
380 * present. Otherwise NULL.
383 _mesa_glsl_parse_state::process_version_directive(YYLTYPE
*locp
, int version
,
386 bool es_token_present
= false;
387 bool compat_token_present
= false;
389 if (strcmp(ident
, "es") == 0) {
390 es_token_present
= true;
391 } else if (version
>= 150) {
392 if (strcmp(ident
, "core") == 0) {
393 /* Accept the token. There's no need to record that this is
394 * a core profile shader since that's the only profile we support.
396 } else if (strcmp(ident
, "compatibility") == 0) {
397 compat_token_present
= true;
399 if (this->ctx
->API
!= API_OPENGL_COMPAT
) {
400 _mesa_glsl_error(locp
, this,
401 "the compatibility profile is not supported");
404 _mesa_glsl_error(locp
, this,
405 "\"%s\" is not a valid shading language profile; "
406 "if present, it must be \"core\"", ident
);
409 _mesa_glsl_error(locp
, this,
410 "illegal text following version number");
414 this->es_shader
= es_token_present
;
415 if (version
== 100) {
416 if (es_token_present
) {
417 _mesa_glsl_error(locp
, this,
418 "GLSL 1.00 ES should be selected using "
421 this->es_shader
= true;
425 if (this->es_shader
) {
426 this->ARB_texture_rectangle_enable
= false;
429 if (this->forced_language_version
)
430 this->language_version
= this->forced_language_version
;
432 this->language_version
= version
;
434 this->compat_shader
= compat_token_present
||
435 (this->ctx
->API
== API_OPENGL_COMPAT
&&
436 this->language_version
== 140) ||
437 (!this->es_shader
&& this->language_version
< 140);
439 bool supported
= false;
440 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
441 if (this->supported_versions
[i
].ver
== this->language_version
442 && this->supported_versions
[i
].es
== this->es_shader
) {
443 this->gl_version
= this->supported_versions
[i
].gl_ver
;
450 _mesa_glsl_error(locp
, this, "%s is not supported. "
451 "Supported versions are: %s",
452 this->get_version_string(),
453 this->supported_version_string
);
455 /* On exit, the language_version must be set to a valid value.
456 * Later calls to _mesa_glsl_initialize_types will misbehave if
457 * the version is invalid.
459 switch (this->ctx
->API
) {
460 case API_OPENGL_COMPAT
:
461 case API_OPENGL_CORE
:
462 this->language_version
= this->ctx
->Const
.GLSLVersion
;
466 assert(!"Should not get here.");
470 this->language_version
= 100;
477 /* This helper function will append the given message to the shader's
478 info log and report it via GL_ARB_debug_output. Per that extension,
479 'type' is one of the enum values classifying the message, and
480 'id' is the implementation-defined ID of the given message. */
482 _mesa_glsl_msg(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
483 GLenum type
, const char *fmt
, va_list ap
)
485 bool error
= (type
== MESA_DEBUG_TYPE_ERROR
);
488 assert(state
->info_log
!= NULL
);
490 /* Get the offset that the new message will be written to. */
491 int msg_offset
= strlen(state
->info_log
);
493 ralloc_asprintf_append(&state
->info_log
, "%u:%u(%u): %s: ",
497 error
? "error" : "warning");
498 ralloc_vasprintf_append(&state
->info_log
, fmt
, ap
);
500 const char *const msg
= &state
->info_log
[msg_offset
];
501 struct gl_context
*ctx
= state
->ctx
;
503 /* Report the error via GL_ARB_debug_output. */
504 _mesa_shader_debug(ctx
, type
, &msg_id
, msg
);
506 ralloc_strcat(&state
->info_log
, "\n");
510 _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
511 const char *fmt
, ...)
518 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_ERROR
, fmt
, ap
);
524 _mesa_glsl_warning(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
525 const char *fmt
, ...)
530 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_OTHER
, fmt
, ap
);
536 * Enum representing the possible behaviors that can be specified in
537 * an #extension directive.
547 * Element type for _mesa_glsl_supported_extensions
549 struct _mesa_glsl_extension
{
551 * Name of the extension when referred to in a GLSL extension
557 * Whether this extension is a part of AEP
562 * Predicate that checks whether the relevant extension is available for
565 bool (*available_pred
)(const struct gl_context
*,
566 gl_api api
, uint8_t version
);
569 * Flag in the _mesa_glsl_parse_state struct that should be set
570 * when this extension is enabled.
572 * See note in _mesa_glsl_extension::supported_flag about "pointer
575 bool _mesa_glsl_parse_state::* enable_flag
;
578 * Flag in the _mesa_glsl_parse_state struct that should be set
579 * when the shader requests "warn" behavior for this extension.
581 * See note in _mesa_glsl_extension::supported_flag about "pointer
584 bool _mesa_glsl_parse_state::* warn_flag
;
587 bool compatible_with_state(const _mesa_glsl_parse_state
*state
,
588 gl_api api
, uint8_t gl_version
) const;
589 void set_flags(_mesa_glsl_parse_state
*state
, ext_behavior behavior
) const;
592 /** Checks if the context supports a user-facing extension */
593 #define EXT(name_str, driver_cap, ...) \
594 static MAYBE_UNUSED bool \
595 has_##name_str(const struct gl_context *ctx, gl_api api, uint8_t version) \
597 return ctx->Extensions.driver_cap && (version >= \
598 _mesa_extension_table[MESA_EXTENSION_##name_str].version[api]); \
600 #include "main/extensions_table.h"
604 { "GL_" #NAME, false, has_##NAME, \
605 &_mesa_glsl_parse_state::NAME##_enable, \
606 &_mesa_glsl_parse_state::NAME##_warn }
608 #define EXT_AEP(NAME) \
609 { "GL_" #NAME, true, has_##NAME, \
610 &_mesa_glsl_parse_state::NAME##_enable, \
611 &_mesa_glsl_parse_state::NAME##_warn }
614 * Table of extensions that can be enabled/disabled within a shader,
615 * and the conditions under which they are supported.
617 static const _mesa_glsl_extension _mesa_glsl_supported_extensions
[] = {
618 /* ARB extensions go here, sorted alphabetically.
620 EXT(ARB_ES3_1_compatibility
),
621 EXT(ARB_ES3_2_compatibility
),
622 EXT(ARB_arrays_of_arrays
),
623 EXT(ARB_bindless_texture
),
624 EXT(ARB_compatibility
),
625 EXT(ARB_compute_shader
),
626 EXT(ARB_compute_variable_group_size
),
627 EXT(ARB_conservative_depth
),
628 EXT(ARB_cull_distance
),
629 EXT(ARB_derivative_control
),
630 EXT(ARB_draw_buffers
),
631 EXT(ARB_draw_instanced
),
632 EXT(ARB_enhanced_layouts
),
633 EXT(ARB_explicit_attrib_location
),
634 EXT(ARB_explicit_uniform_location
),
635 EXT(ARB_fragment_coord_conventions
),
636 EXT(ARB_fragment_layer_viewport
),
637 EXT(ARB_fragment_shader_interlock
),
638 EXT(ARB_gpu_shader5
),
639 EXT(ARB_gpu_shader_fp64
),
640 EXT(ARB_gpu_shader_int64
),
641 EXT(ARB_post_depth_coverage
),
642 EXT(ARB_sample_shading
),
643 EXT(ARB_separate_shader_objects
),
644 EXT(ARB_shader_atomic_counter_ops
),
645 EXT(ARB_shader_atomic_counters
),
646 EXT(ARB_shader_ballot
),
647 EXT(ARB_shader_bit_encoding
),
648 EXT(ARB_shader_clock
),
649 EXT(ARB_shader_draw_parameters
),
650 EXT(ARB_shader_group_vote
),
651 EXT(ARB_shader_image_load_store
),
652 EXT(ARB_shader_image_size
),
653 EXT(ARB_shader_precision
),
654 EXT(ARB_shader_stencil_export
),
655 EXT(ARB_shader_storage_buffer_object
),
656 EXT(ARB_shader_subroutine
),
657 EXT(ARB_shader_texture_image_samples
),
658 EXT(ARB_shader_texture_lod
),
659 EXT(ARB_shader_viewport_layer_array
),
660 EXT(ARB_shading_language_420pack
),
661 EXT(ARB_shading_language_packing
),
662 EXT(ARB_tessellation_shader
),
663 EXT(ARB_texture_cube_map_array
),
664 EXT(ARB_texture_gather
),
665 EXT(ARB_texture_multisample
),
666 EXT(ARB_texture_query_levels
),
667 EXT(ARB_texture_query_lod
),
668 EXT(ARB_texture_rectangle
),
669 EXT(ARB_uniform_buffer_object
),
670 EXT(ARB_vertex_attrib_64bit
),
671 EXT(ARB_viewport_array
),
673 /* KHR extensions go here, sorted alphabetically.
675 EXT_AEP(KHR_blend_equation_advanced
),
677 /* OES extensions go here, sorted alphabetically.
679 EXT(OES_EGL_image_external
),
680 EXT(OES_EGL_image_external_essl3
),
681 EXT(OES_geometry_point_size
),
682 EXT(OES_geometry_shader
),
683 EXT(OES_gpu_shader5
),
684 EXT(OES_primitive_bounding_box
),
685 EXT_AEP(OES_sample_variables
),
686 EXT_AEP(OES_shader_image_atomic
),
687 EXT(OES_shader_io_blocks
),
688 EXT_AEP(OES_shader_multisample_interpolation
),
689 EXT(OES_standard_derivatives
),
690 EXT(OES_tessellation_point_size
),
691 EXT(OES_tessellation_shader
),
693 EXT(OES_texture_buffer
),
694 EXT(OES_texture_cube_map_array
),
695 EXT_AEP(OES_texture_storage_multisample_2d_array
),
696 EXT(OES_viewport_array
),
698 /* All other extensions go here, sorted alphabetically.
700 EXT(AMD_conservative_depth
),
701 EXT(AMD_shader_stencil_export
),
702 EXT(AMD_shader_trinary_minmax
),
703 EXT(AMD_vertex_shader_layer
),
704 EXT(AMD_vertex_shader_viewport_index
),
705 EXT(ANDROID_extension_pack_es31a
),
706 EXT(EXT_blend_func_extended
),
708 EXT(EXT_draw_buffers
),
709 EXT(EXT_clip_cull_distance
),
710 EXT(EXT_geometry_point_size
),
711 EXT_AEP(EXT_geometry_shader
),
712 EXT_AEP(EXT_gpu_shader5
),
713 EXT_AEP(EXT_primitive_bounding_box
),
714 EXT(EXT_separate_shader_objects
),
715 EXT(EXT_shader_framebuffer_fetch
),
716 EXT(EXT_shader_framebuffer_fetch_non_coherent
),
717 EXT(EXT_shader_integer_mix
),
718 EXT_AEP(EXT_shader_io_blocks
),
719 EXT(EXT_shader_samples_identical
),
720 EXT(EXT_tessellation_point_size
),
721 EXT_AEP(EXT_tessellation_shader
),
722 EXT(EXT_texture_array
),
723 EXT_AEP(EXT_texture_buffer
),
724 EXT_AEP(EXT_texture_cube_map_array
),
725 EXT(INTEL_conservative_rasterization
),
726 EXT(INTEL_shader_atomic_float_minmax
),
727 EXT(MESA_shader_integer_functions
),
728 EXT(NV_fragment_shader_interlock
),
729 EXT(NV_image_formats
),
730 EXT(NV_shader_atomic_float
),
737 * Determine whether a given extension is compatible with the target,
738 * API, and extension information in the current parser state.
740 bool _mesa_glsl_extension::compatible_with_state(
741 const _mesa_glsl_parse_state
*state
, gl_api api
, uint8_t gl_version
) const
743 return this->available_pred(state
->ctx
, api
, gl_version
);
747 * Set the appropriate flags in the parser state to establish the
748 * given behavior for this extension.
750 void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state
*state
,
751 ext_behavior behavior
) const
753 /* Note: the ->* operator indexes into state by the
754 * offsets this->enable_flag and this->warn_flag. See
755 * _mesa_glsl_extension::supported_flag for more info.
757 state
->*(this->enable_flag
) = (behavior
!= extension_disable
);
758 state
->*(this->warn_flag
) = (behavior
== extension_warn
);
762 * Find an extension by name in _mesa_glsl_supported_extensions. If
763 * the name is not found, return NULL.
765 static const _mesa_glsl_extension
*find_extension(const char *name
)
767 for (unsigned i
= 0; i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
768 if (strcmp(name
, _mesa_glsl_supported_extensions
[i
].name
) == 0) {
769 return &_mesa_glsl_supported_extensions
[i
];
776 _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
777 const char *behavior_string
, YYLTYPE
*behavior_locp
,
778 _mesa_glsl_parse_state
*state
)
780 uint8_t gl_version
= state
->ctx
->Extensions
.Version
;
781 gl_api api
= state
->ctx
->API
;
782 ext_behavior behavior
;
783 if (strcmp(behavior_string
, "warn") == 0) {
784 behavior
= extension_warn
;
785 } else if (strcmp(behavior_string
, "require") == 0) {
786 behavior
= extension_require
;
787 } else if (strcmp(behavior_string
, "enable") == 0) {
788 behavior
= extension_enable
;
789 } else if (strcmp(behavior_string
, "disable") == 0) {
790 behavior
= extension_disable
;
792 _mesa_glsl_error(behavior_locp
, state
,
793 "unknown extension behavior `%s'",
798 /* If we're in a desktop context but with an ES shader, use an ES API enum
799 * to verify extension availability.
801 if (state
->es_shader
&& api
!= API_OPENGLES2
)
803 /* Use the language-version derived GL version to extension checks, unless
804 * we're using meta, which sets the version to the max.
806 if (gl_version
!= 0xff)
807 gl_version
= state
->gl_version
;
809 if (strcmp(name
, "all") == 0) {
810 if ((behavior
== extension_enable
) || (behavior
== extension_require
)) {
811 _mesa_glsl_error(name_locp
, state
, "cannot %s all extensions",
812 (behavior
== extension_enable
)
813 ? "enable" : "require");
817 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
818 const _mesa_glsl_extension
*extension
819 = &_mesa_glsl_supported_extensions
[i
];
820 if (extension
->compatible_with_state(state
, api
, gl_version
)) {
821 _mesa_glsl_supported_extensions
[i
].set_flags(state
, behavior
);
826 const _mesa_glsl_extension
*extension
= find_extension(name
);
827 if (extension
&& extension
->compatible_with_state(state
, api
, gl_version
)) {
828 extension
->set_flags(state
, behavior
);
829 if (extension
->available_pred
== has_ANDROID_extension_pack_es31a
) {
831 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
832 const _mesa_glsl_extension
*extension
=
833 &_mesa_glsl_supported_extensions
[i
];
837 /* AEP should not be enabled if all of the sub-extensions can't
838 * also be enabled. This is not the proper layer to do such
839 * error-checking though.
841 assert(extension
->compatible_with_state(state
, api
, gl_version
));
842 extension
->set_flags(state
, behavior
);
846 static const char fmt
[] = "extension `%s' unsupported in %s shader";
848 if (behavior
== extension_require
) {
849 _mesa_glsl_error(name_locp
, state
, fmt
,
850 name
, _mesa_shader_stage_to_string(state
->stage
));
853 _mesa_glsl_warning(name_locp
, state
, fmt
,
854 name
, _mesa_shader_stage_to_string(state
->stage
));
864 * Recurses through <type> and <expr> if <expr> is an aggregate initializer
865 * and sets <expr>'s <constructor_type> field to <type>. Gives later functions
866 * (process_array_constructor, et al) sufficient information to do type
869 * Operates on assignments involving an aggregate initializer. E.g.,
871 * vec4 pos = {1.0, -1.0, 0.0, 1.0};
873 * or more ridiculously,
886 * {1.0, 2.0, 3.0, 4.0}, // a[0].v[0]
887 * {5.0, 6.0, 7.0, 8.0} // a[0].v[1]
892 * {1.0, 2.0, 3.0, 4.0}, // a[1].v[0]
893 * {5.0, 6.0, 7.0, 8.0} // a[1].v[1]
899 * {1.0, 2.0, 3.0, 4.0}, // b.v[0]
900 * {5.0, 6.0, 7.0, 8.0} // b.v[1]
906 * This pass is necessary because the right-hand side of <type> e = { ... }
907 * doesn't contain sufficient information to determine if the types match.
910 _mesa_ast_set_aggregate_type(const glsl_type
*type
,
911 ast_expression
*expr
)
913 ast_aggregate_initializer
*ai
= (ast_aggregate_initializer
*)expr
;
914 ai
->constructor_type
= type
;
916 /* If the aggregate is an array, recursively set its elements' types. */
917 if (type
->is_array()) {
918 /* Each array element has the type type->fields.array.
920 * E.g., if <type> if struct S[2] we want to set each element's type to
923 for (exec_node
*expr_node
= ai
->expressions
.get_head_raw();
924 !expr_node
->is_tail_sentinel();
925 expr_node
= expr_node
->next
) {
926 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
929 if (expr
->oper
== ast_aggregate
)
930 _mesa_ast_set_aggregate_type(type
->fields
.array
, expr
);
933 /* If the aggregate is a struct, recursively set its fields' types. */
934 } else if (type
->is_record()) {
935 exec_node
*expr_node
= ai
->expressions
.get_head_raw();
937 /* Iterate through the struct's fields. */
938 for (unsigned i
= 0; !expr_node
->is_tail_sentinel() && i
< type
->length
;
939 i
++, expr_node
= expr_node
->next
) {
940 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
943 if (expr
->oper
== ast_aggregate
) {
944 _mesa_ast_set_aggregate_type(type
->fields
.structure
[i
].type
, expr
);
947 /* If the aggregate is a matrix, set its columns' types. */
948 } else if (type
->is_matrix()) {
949 for (exec_node
*expr_node
= ai
->expressions
.get_head_raw();
950 !expr_node
->is_tail_sentinel();
951 expr_node
= expr_node
->next
) {
952 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
955 if (expr
->oper
== ast_aggregate
)
956 _mesa_ast_set_aggregate_type(type
->column_type(), expr
);
962 _mesa_ast_process_interface_block(YYLTYPE
*locp
,
963 _mesa_glsl_parse_state
*state
,
964 ast_interface_block
*const block
,
965 const struct ast_type_qualifier
&q
)
967 if (q
.flags
.q
.buffer
) {
968 if (!state
->has_shader_storage_buffer_objects()) {
969 _mesa_glsl_error(locp
, state
,
970 "#version 430 / GL_ARB_shader_storage_buffer_object "
971 "required for defining shader storage blocks");
972 } else if (state
->ARB_shader_storage_buffer_object_warn
) {
973 _mesa_glsl_warning(locp
, state
,
974 "#version 430 / GL_ARB_shader_storage_buffer_object "
975 "required for defining shader storage blocks");
977 } else if (q
.flags
.q
.uniform
) {
978 if (!state
->has_uniform_buffer_objects()) {
979 _mesa_glsl_error(locp
, state
,
980 "#version 140 / GL_ARB_uniform_buffer_object "
981 "required for defining uniform blocks");
982 } else if (state
->ARB_uniform_buffer_object_warn
) {
983 _mesa_glsl_warning(locp
, state
,
984 "#version 140 / GL_ARB_uniform_buffer_object "
985 "required for defining uniform blocks");
988 if (!state
->has_shader_io_blocks()) {
989 if (state
->es_shader
) {
990 _mesa_glsl_error(locp
, state
,
991 "GL_OES_shader_io_blocks or #version 320 "
992 "required for using interface blocks");
994 _mesa_glsl_error(locp
, state
,
995 "#version 150 required for using "
1001 /* From the GLSL 1.50.11 spec, section 4.3.7 ("Interface Blocks"):
1002 * "It is illegal to have an input block in a vertex shader
1003 * or an output block in a fragment shader"
1005 if ((state
->stage
== MESA_SHADER_VERTEX
) && q
.flags
.q
.in
) {
1006 _mesa_glsl_error(locp
, state
,
1007 "`in' interface block is not allowed for "
1009 } else if ((state
->stage
== MESA_SHADER_FRAGMENT
) && q
.flags
.q
.out
) {
1010 _mesa_glsl_error(locp
, state
,
1011 "`out' interface block is not allowed for "
1012 "a fragment shader");
1015 /* Since block arrays require names, and both features are added in
1016 * the same language versions, we don't have to explicitly
1017 * version-check both things.
1019 if (block
->instance_name
!= NULL
) {
1020 state
->check_version(150, 300, locp
, "interface blocks with "
1021 "an instance name are not allowed");
1024 ast_type_qualifier::bitset_t interface_type_mask
;
1025 struct ast_type_qualifier temp_type_qualifier
;
1027 /* Get a bitmask containing only the in/out/uniform/buffer
1028 * flags, allowing us to ignore other irrelevant flags like
1029 * interpolation qualifiers.
1031 temp_type_qualifier
.flags
.i
= 0;
1032 temp_type_qualifier
.flags
.q
.uniform
= true;
1033 temp_type_qualifier
.flags
.q
.in
= true;
1034 temp_type_qualifier
.flags
.q
.out
= true;
1035 temp_type_qualifier
.flags
.q
.buffer
= true;
1036 temp_type_qualifier
.flags
.q
.patch
= true;
1037 interface_type_mask
= temp_type_qualifier
.flags
.i
;
1039 /* Get the block's interface qualifier. The interface_qualifier
1040 * production rule guarantees that only one bit will be set (and
1041 * it will be in/out/uniform).
1043 ast_type_qualifier::bitset_t block_interface_qualifier
= q
.flags
.i
;
1045 block
->default_layout
.flags
.i
|= block_interface_qualifier
;
1047 if (state
->stage
== MESA_SHADER_GEOMETRY
&&
1048 state
->has_explicit_attrib_stream() &&
1049 block
->default_layout
.flags
.q
.out
) {
1050 /* Assign global layout's stream value. */
1051 block
->default_layout
.flags
.q
.stream
= 1;
1052 block
->default_layout
.flags
.q
.explicit_stream
= 0;
1053 block
->default_layout
.stream
= state
->out_qualifier
->stream
;
1056 if (state
->has_enhanced_layouts() && block
->default_layout
.flags
.q
.out
) {
1057 /* Assign global layout's xfb_buffer value. */
1058 block
->default_layout
.flags
.q
.xfb_buffer
= 1;
1059 block
->default_layout
.flags
.q
.explicit_xfb_buffer
= 0;
1060 block
->default_layout
.xfb_buffer
= state
->out_qualifier
->xfb_buffer
;
1063 foreach_list_typed (ast_declarator_list
, member
, link
, &block
->declarations
) {
1064 ast_type_qualifier
& qualifier
= member
->type
->qualifier
;
1065 if ((qualifier
.flags
.i
& interface_type_mask
) == 0) {
1066 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1067 * "If no optional qualifier is used in a member declaration, the
1068 * qualifier of the variable is just in, out, or uniform as declared
1069 * by interface-qualifier."
1071 qualifier
.flags
.i
|= block_interface_qualifier
;
1072 } else if ((qualifier
.flags
.i
& interface_type_mask
) !=
1073 block_interface_qualifier
) {
1074 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1075 * "If optional qualifiers are used, they can include interpolation
1076 * and storage qualifiers and they must declare an input, output,
1077 * or uniform variable consistent with the interface qualifier of
1080 _mesa_glsl_error(locp
, state
,
1081 "uniform/in/out qualifier on "
1082 "interface block member does not match "
1083 "the interface block");
1086 if (!(q
.flags
.q
.in
|| q
.flags
.q
.out
) && qualifier
.flags
.q
.invariant
)
1087 _mesa_glsl_error(locp
, state
,
1088 "invariant qualifiers can be used only "
1089 "in interface block members for shader "
1090 "inputs or outputs");
1095 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier
*q
)
1097 if (q
->is_subroutine_decl())
1098 printf("subroutine ");
1100 if (q
->subroutine_list
) {
1101 printf("subroutine (");
1102 q
->subroutine_list
->print();
1106 if (q
->flags
.q
.constant
)
1109 if (q
->flags
.q
.invariant
)
1110 printf("invariant ");
1112 if (q
->flags
.q
.attribute
)
1113 printf("attribute ");
1115 if (q
->flags
.q
.varying
)
1118 if (q
->flags
.q
.in
&& q
->flags
.q
.out
)
1128 if (q
->flags
.q
.centroid
)
1129 printf("centroid ");
1130 if (q
->flags
.q
.sample
)
1132 if (q
->flags
.q
.patch
)
1134 if (q
->flags
.q
.uniform
)
1136 if (q
->flags
.q
.buffer
)
1138 if (q
->flags
.q
.smooth
)
1140 if (q
->flags
.q
.flat
)
1142 if (q
->flags
.q
.noperspective
)
1143 printf("noperspective ");
1148 ast_node::print(void) const
1150 printf("unhandled node ");
1154 ast_node::ast_node(void)
1156 this->location
.source
= 0;
1157 this->location
.first_line
= 0;
1158 this->location
.first_column
= 0;
1159 this->location
.last_line
= 0;
1160 this->location
.last_column
= 0;
1165 ast_opt_array_dimensions_print(const ast_array_specifier
*array_specifier
)
1167 if (array_specifier
)
1168 array_specifier
->print();
1173 ast_compound_statement::print(void) const
1177 foreach_list_typed(ast_node
, ast
, link
, &this->statements
) {
1185 ast_compound_statement::ast_compound_statement(int new_scope
,
1186 ast_node
*statements
)
1188 this->new_scope
= new_scope
;
1190 if (statements
!= NULL
) {
1191 this->statements
.push_degenerate_list_at_head(&statements
->link
);
1197 ast_expression::print(void) const
1201 case ast_mul_assign
:
1202 case ast_div_assign
:
1203 case ast_mod_assign
:
1204 case ast_add_assign
:
1205 case ast_sub_assign
:
1208 case ast_and_assign
:
1209 case ast_xor_assign
:
1211 subexpressions
[0]->print();
1212 printf("%s ", operator_string(oper
));
1213 subexpressions
[1]->print();
1216 case ast_field_selection
:
1217 subexpressions
[0]->print();
1218 printf(". %s ", primary_expression
.identifier
);
1227 printf("%s ", operator_string(oper
));
1228 subexpressions
[0]->print();
1233 subexpressions
[0]->print();
1234 printf("%s ", operator_string(oper
));
1237 case ast_conditional
:
1238 subexpressions
[0]->print();
1240 subexpressions
[1]->print();
1242 subexpressions
[2]->print();
1245 case ast_array_index
:
1246 subexpressions
[0]->print();
1248 subexpressions
[1]->print();
1252 case ast_function_call
: {
1253 subexpressions
[0]->print();
1256 foreach_list_typed (ast_node
, ast
, link
, &this->expressions
) {
1257 if (&ast
->link
!= this->expressions
.get_head())
1267 case ast_identifier
:
1268 printf("%s ", primary_expression
.identifier
);
1271 case ast_int_constant
:
1272 printf("%d ", primary_expression
.int_constant
);
1275 case ast_uint_constant
:
1276 printf("%u ", primary_expression
.uint_constant
);
1279 case ast_float_constant
:
1280 printf("%f ", primary_expression
.float_constant
);
1283 case ast_double_constant
:
1284 printf("%f ", primary_expression
.double_constant
);
1287 case ast_int64_constant
:
1288 printf("%" PRId64
" ", primary_expression
.int64_constant
);
1291 case ast_uint64_constant
:
1292 printf("%" PRIu64
" ", primary_expression
.uint64_constant
);
1295 case ast_bool_constant
:
1297 primary_expression
.bool_constant
1298 ? "true" : "false");
1301 case ast_sequence
: {
1303 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1304 if (&ast
->link
!= this->expressions
.get_head())
1313 case ast_aggregate
: {
1315 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1316 if (&ast
->link
!= this->expressions
.get_head())
1331 ast_expression::ast_expression(int oper
,
1332 ast_expression
*ex0
,
1333 ast_expression
*ex1
,
1334 ast_expression
*ex2
) :
1335 primary_expression()
1337 this->oper
= ast_operators(oper
);
1338 this->subexpressions
[0] = ex0
;
1339 this->subexpressions
[1] = ex1
;
1340 this->subexpressions
[2] = ex2
;
1341 this->non_lvalue_description
= NULL
;
1342 this->is_lhs
= false;
1347 ast_expression_statement::print(void) const
1350 expression
->print();
1356 ast_expression_statement::ast_expression_statement(ast_expression
*ex
) :
1364 ast_function::print(void) const
1366 return_type
->print();
1367 printf(" %s (", identifier
);
1369 foreach_list_typed(ast_node
, ast
, link
, & this->parameters
) {
1377 ast_function::ast_function(void)
1378 : return_type(NULL
), identifier(NULL
), is_definition(false),
1386 ast_fully_specified_type::print(void) const
1388 _mesa_ast_type_qualifier_print(& qualifier
);
1394 ast_parameter_declarator::print(void) const
1398 printf("%s ", identifier
);
1399 ast_opt_array_dimensions_print(array_specifier
);
1404 ast_function_definition::print(void) const
1412 ast_declaration::print(void) const
1414 printf("%s ", identifier
);
1415 ast_opt_array_dimensions_print(array_specifier
);
1419 initializer
->print();
1424 ast_declaration::ast_declaration(const char *identifier
,
1425 ast_array_specifier
*array_specifier
,
1426 ast_expression
*initializer
)
1428 this->identifier
= identifier
;
1429 this->array_specifier
= array_specifier
;
1430 this->initializer
= initializer
;
1435 ast_declarator_list::print(void) const
1437 assert(type
|| invariant
);
1442 printf("invariant ");
1446 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1447 if (&ast
->link
!= this->declarations
.get_head())
1457 ast_declarator_list::ast_declarator_list(ast_fully_specified_type
*type
)
1460 this->invariant
= false;
1461 this->precise
= false;
1465 ast_jump_statement::print(void) const
1469 printf("continue; ");
1476 if (opt_return_value
)
1477 opt_return_value
->print();
1482 printf("discard; ");
1488 ast_jump_statement::ast_jump_statement(int mode
, ast_expression
*return_value
)
1489 : opt_return_value(NULL
)
1491 this->mode
= ast_jump_modes(mode
);
1493 if (mode
== ast_return
)
1494 opt_return_value
= return_value
;
1499 ast_selection_statement::print(void) const
1505 then_statement
->print();
1507 if (else_statement
) {
1509 else_statement
->print();
1514 ast_selection_statement::ast_selection_statement(ast_expression
*condition
,
1515 ast_node
*then_statement
,
1516 ast_node
*else_statement
)
1518 this->condition
= condition
;
1519 this->then_statement
= then_statement
;
1520 this->else_statement
= else_statement
;
1525 ast_switch_statement::print(void) const
1527 printf("switch ( ");
1528 test_expression
->print();
1535 ast_switch_statement::ast_switch_statement(ast_expression
*test_expression
,
1538 this->test_expression
= test_expression
;
1544 ast_switch_body::print(void) const
1547 if (stmts
!= NULL
) {
1554 ast_switch_body::ast_switch_body(ast_case_statement_list
*stmts
)
1556 this->stmts
= stmts
;
1560 void ast_case_label::print(void) const
1562 if (test_value
!= NULL
) {
1564 test_value
->print();
1567 printf("default: ");
1572 ast_case_label::ast_case_label(ast_expression
*test_value
)
1574 this->test_value
= test_value
;
1578 void ast_case_label_list::print(void) const
1580 foreach_list_typed(ast_node
, ast
, link
, & this->labels
) {
1587 ast_case_label_list::ast_case_label_list(void)
1592 void ast_case_statement::print(void) const
1595 foreach_list_typed(ast_node
, ast
, link
, & this->stmts
) {
1602 ast_case_statement::ast_case_statement(ast_case_label_list
*labels
)
1604 this->labels
= labels
;
1608 void ast_case_statement_list::print(void) const
1610 foreach_list_typed(ast_node
, ast
, link
, & this->cases
) {
1616 ast_case_statement_list::ast_case_statement_list(void)
1622 ast_iteration_statement::print(void) const
1628 init_statement
->print();
1635 if (rest_expression
)
1636 rest_expression
->print();
1662 ast_iteration_statement::ast_iteration_statement(int mode
,
1664 ast_node
*condition
,
1665 ast_expression
*rest_expression
,
1668 this->mode
= ast_iteration_modes(mode
);
1669 this->init_statement
= init
;
1670 this->condition
= condition
;
1671 this->rest_expression
= rest_expression
;
1677 ast_struct_specifier::print(void) const
1679 printf("struct %s { ", name
);
1680 foreach_list_typed(ast_node
, ast
, link
, &this->declarations
) {
1687 ast_struct_specifier::ast_struct_specifier(const char *identifier
,
1688 ast_declarator_list
*declarator_list
)
1689 : name(identifier
), layout(NULL
), declarations(), is_declaration(true),
1692 this->declarations
.push_degenerate_list_at_head(&declarator_list
->link
);
1695 void ast_subroutine_list::print(void) const
1697 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1698 if (&ast
->link
!= this->declarations
.get_head())
1705 set_shader_inout_layout(struct gl_shader
*shader
,
1706 struct _mesa_glsl_parse_state
*state
)
1708 /* Should have been prevented by the parser. */
1709 if (shader
->Stage
== MESA_SHADER_TESS_CTRL
||
1710 shader
->Stage
== MESA_SHADER_VERTEX
) {
1711 assert(!state
->in_qualifier
->flags
.i
);
1712 } else if (shader
->Stage
!= MESA_SHADER_GEOMETRY
&&
1713 shader
->Stage
!= MESA_SHADER_TESS_EVAL
) {
1714 assert(!state
->in_qualifier
->flags
.i
);
1717 if (shader
->Stage
!= MESA_SHADER_COMPUTE
) {
1718 /* Should have been prevented by the parser. */
1719 assert(!state
->cs_input_local_size_specified
);
1720 assert(!state
->cs_input_local_size_variable_specified
);
1723 if (shader
->Stage
!= MESA_SHADER_FRAGMENT
) {
1724 /* Should have been prevented by the parser. */
1725 assert(!state
->fs_uses_gl_fragcoord
);
1726 assert(!state
->fs_redeclares_gl_fragcoord
);
1727 assert(!state
->fs_pixel_center_integer
);
1728 assert(!state
->fs_origin_upper_left
);
1729 assert(!state
->fs_early_fragment_tests
);
1730 assert(!state
->fs_inner_coverage
);
1731 assert(!state
->fs_post_depth_coverage
);
1732 assert(!state
->fs_pixel_interlock_ordered
);
1733 assert(!state
->fs_pixel_interlock_unordered
);
1734 assert(!state
->fs_sample_interlock_ordered
);
1735 assert(!state
->fs_sample_interlock_unordered
);
1738 for (unsigned i
= 0; i
< MAX_FEEDBACK_BUFFERS
; i
++) {
1739 if (state
->out_qualifier
->out_xfb_stride
[i
]) {
1740 unsigned xfb_stride
;
1741 if (state
->out_qualifier
->out_xfb_stride
[i
]->
1742 process_qualifier_constant(state
, "xfb_stride", &xfb_stride
,
1744 shader
->TransformFeedbackBufferStride
[i
] = xfb_stride
;
1749 switch (shader
->Stage
) {
1750 case MESA_SHADER_TESS_CTRL
:
1751 shader
->info
.TessCtrl
.VerticesOut
= 0;
1752 if (state
->tcs_output_vertices_specified
) {
1754 if (state
->out_qualifier
->vertices
->
1755 process_qualifier_constant(state
, "vertices", &vertices
,
1758 YYLTYPE loc
= state
->out_qualifier
->vertices
->get_location();
1759 if (vertices
> state
->Const
.MaxPatchVertices
) {
1760 _mesa_glsl_error(&loc
, state
, "vertices (%d) exceeds "
1761 "GL_MAX_PATCH_VERTICES", vertices
);
1763 shader
->info
.TessCtrl
.VerticesOut
= vertices
;
1767 case MESA_SHADER_TESS_EVAL
:
1768 shader
->info
.TessEval
.PrimitiveMode
= PRIM_UNKNOWN
;
1769 if (state
->in_qualifier
->flags
.q
.prim_type
)
1770 shader
->info
.TessEval
.PrimitiveMode
= state
->in_qualifier
->prim_type
;
1772 shader
->info
.TessEval
.Spacing
= TESS_SPACING_UNSPECIFIED
;
1773 if (state
->in_qualifier
->flags
.q
.vertex_spacing
)
1774 shader
->info
.TessEval
.Spacing
= state
->in_qualifier
->vertex_spacing
;
1776 shader
->info
.TessEval
.VertexOrder
= 0;
1777 if (state
->in_qualifier
->flags
.q
.ordering
)
1778 shader
->info
.TessEval
.VertexOrder
= state
->in_qualifier
->ordering
;
1780 shader
->info
.TessEval
.PointMode
= -1;
1781 if (state
->in_qualifier
->flags
.q
.point_mode
)
1782 shader
->info
.TessEval
.PointMode
= state
->in_qualifier
->point_mode
;
1784 case MESA_SHADER_GEOMETRY
:
1785 shader
->info
.Geom
.VerticesOut
= -1;
1786 if (state
->out_qualifier
->flags
.q
.max_vertices
) {
1787 unsigned qual_max_vertices
;
1788 if (state
->out_qualifier
->max_vertices
->
1789 process_qualifier_constant(state
, "max_vertices",
1790 &qual_max_vertices
, true)) {
1792 if (qual_max_vertices
> state
->Const
.MaxGeometryOutputVertices
) {
1793 YYLTYPE loc
= state
->out_qualifier
->max_vertices
->get_location();
1794 _mesa_glsl_error(&loc
, state
,
1795 "maximum output vertices (%d) exceeds "
1796 "GL_MAX_GEOMETRY_OUTPUT_VERTICES",
1799 shader
->info
.Geom
.VerticesOut
= qual_max_vertices
;
1803 if (state
->gs_input_prim_type_specified
) {
1804 shader
->info
.Geom
.InputType
= state
->in_qualifier
->prim_type
;
1806 shader
->info
.Geom
.InputType
= PRIM_UNKNOWN
;
1809 if (state
->out_qualifier
->flags
.q
.prim_type
) {
1810 shader
->info
.Geom
.OutputType
= state
->out_qualifier
->prim_type
;
1812 shader
->info
.Geom
.OutputType
= PRIM_UNKNOWN
;
1815 shader
->info
.Geom
.Invocations
= 0;
1816 if (state
->in_qualifier
->flags
.q
.invocations
) {
1817 unsigned invocations
;
1818 if (state
->in_qualifier
->invocations
->
1819 process_qualifier_constant(state
, "invocations",
1820 &invocations
, false)) {
1822 YYLTYPE loc
= state
->in_qualifier
->invocations
->get_location();
1823 if (invocations
> MAX_GEOMETRY_SHADER_INVOCATIONS
) {
1824 _mesa_glsl_error(&loc
, state
,
1825 "invocations (%d) exceeds "
1826 "GL_MAX_GEOMETRY_SHADER_INVOCATIONS",
1829 shader
->info
.Geom
.Invocations
= invocations
;
1834 case MESA_SHADER_COMPUTE
:
1835 if (state
->cs_input_local_size_specified
) {
1836 for (int i
= 0; i
< 3; i
++)
1837 shader
->info
.Comp
.LocalSize
[i
] = state
->cs_input_local_size
[i
];
1839 for (int i
= 0; i
< 3; i
++)
1840 shader
->info
.Comp
.LocalSize
[i
] = 0;
1843 shader
->info
.Comp
.LocalSizeVariable
=
1844 state
->cs_input_local_size_variable_specified
;
1847 case MESA_SHADER_FRAGMENT
:
1848 shader
->redeclares_gl_fragcoord
= state
->fs_redeclares_gl_fragcoord
;
1849 shader
->uses_gl_fragcoord
= state
->fs_uses_gl_fragcoord
;
1850 shader
->pixel_center_integer
= state
->fs_pixel_center_integer
;
1851 shader
->origin_upper_left
= state
->fs_origin_upper_left
;
1852 shader
->ARB_fragment_coord_conventions_enable
=
1853 state
->ARB_fragment_coord_conventions_enable
;
1854 shader
->EarlyFragmentTests
= state
->fs_early_fragment_tests
;
1855 shader
->InnerCoverage
= state
->fs_inner_coverage
;
1856 shader
->PostDepthCoverage
= state
->fs_post_depth_coverage
;
1857 shader
->PixelInterlockOrdered
= state
->fs_pixel_interlock_ordered
;
1858 shader
->PixelInterlockUnordered
= state
->fs_pixel_interlock_unordered
;
1859 shader
->SampleInterlockOrdered
= state
->fs_sample_interlock_ordered
;
1860 shader
->SampleInterlockUnordered
= state
->fs_sample_interlock_unordered
;
1861 shader
->BlendSupport
= state
->fs_blend_support
;
1865 /* Nothing to do. */
1869 shader
->bindless_sampler
= state
->bindless_sampler_specified
;
1870 shader
->bindless_image
= state
->bindless_image_specified
;
1871 shader
->bound_sampler
= state
->bound_sampler_specified
;
1872 shader
->bound_image
= state
->bound_image_specified
;
1875 /* src can be NULL if only the symbols found in the exec_list should be
1879 _mesa_glsl_copy_symbols_from_table(struct exec_list
*shader_ir
,
1880 struct glsl_symbol_table
*src
,
1881 struct glsl_symbol_table
*dest
)
1883 foreach_in_list (ir_instruction
, ir
, shader_ir
) {
1884 switch (ir
->ir_type
) {
1885 case ir_type_function
:
1886 dest
->add_function((ir_function
*) ir
);
1888 case ir_type_variable
: {
1889 ir_variable
*const var
= (ir_variable
*) ir
;
1891 if (var
->data
.mode
!= ir_var_temporary
)
1892 dest
->add_variable(var
);
1901 /* Explicitly copy the gl_PerVertex interface definitions because these
1902 * are needed to check they are the same during the interstage link.
1903 * They can’t necessarily be found via the exec_list because the members
1904 * might not be referenced. The GL spec still requires that they match
1907 const glsl_type
*iface
=
1908 src
->get_interface("gl_PerVertex", ir_var_shader_in
);
1910 dest
->add_interface(iface
->name
, iface
, ir_var_shader_in
);
1912 iface
= src
->get_interface("gl_PerVertex", ir_var_shader_out
);
1914 dest
->add_interface(iface
->name
, iface
, ir_var_shader_out
);
1921 assign_subroutine_indexes(struct _mesa_glsl_parse_state
*state
)
1926 for (j
= 0; j
< state
->num_subroutines
; j
++) {
1927 while (state
->subroutines
[j
]->subroutine_index
== -1) {
1928 for (k
= 0; k
< state
->num_subroutines
; k
++) {
1929 if (state
->subroutines
[k
]->subroutine_index
== index
)
1931 else if (k
== state
->num_subroutines
- 1) {
1932 state
->subroutines
[j
]->subroutine_index
= index
;
1941 add_builtin_defines(struct _mesa_glsl_parse_state
*state
,
1942 void (*add_builtin_define
)(struct glcpp_parser
*, const char *, int),
1943 struct glcpp_parser
*data
,
1947 unsigned gl_version
= state
->ctx
->Extensions
.Version
;
1948 gl_api api
= state
->ctx
->API
;
1950 if (gl_version
!= 0xff) {
1952 for (i
= 0; i
< state
->num_supported_versions
; i
++) {
1953 if (state
->supported_versions
[i
].ver
== version
&&
1954 state
->supported_versions
[i
].es
== es
) {
1955 gl_version
= state
->supported_versions
[i
].gl_ver
;
1960 if (i
== state
->num_supported_versions
)
1965 api
= API_OPENGLES2
;
1967 for (unsigned i
= 0;
1968 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
1969 const _mesa_glsl_extension
*extension
1970 = &_mesa_glsl_supported_extensions
[i
];
1971 if (extension
->compatible_with_state(state
, api
, gl_version
)) {
1972 add_builtin_define(data
, extension
->name
, 1);
1977 /* Implements parsing checks that we can't do during parsing */
1979 do_late_parsing_checks(struct _mesa_glsl_parse_state
*state
)
1981 if (state
->stage
== MESA_SHADER_COMPUTE
&& !state
->has_compute_shader()) {
1983 memset(&loc
, 0, sizeof(loc
));
1984 _mesa_glsl_error(&loc
, state
, "Compute shaders require "
1985 "GLSL 4.30 or GLSL ES 3.10");
1990 opt_shader_and_create_symbol_table(struct gl_context
*ctx
,
1991 struct glsl_symbol_table
*source_symbols
,
1992 struct gl_shader
*shader
)
1994 assert(shader
->CompileStatus
!= COMPILE_FAILURE
&&
1995 !shader
->ir
->is_empty());
1997 struct gl_shader_compiler_options
*options
=
1998 &ctx
->Const
.ShaderCompilerOptions
[shader
->Stage
];
2000 /* Do some optimization at compile time to reduce shader IR size
2001 * and reduce later work if the same shader is linked multiple times
2003 if (ctx
->Const
.GLSLOptimizeConservatively
) {
2004 /* Run it just once. */
2005 do_common_optimization(shader
->ir
, false, false, options
,
2006 ctx
->Const
.NativeIntegers
);
2008 /* Repeat it until it stops making changes. */
2009 while (do_common_optimization(shader
->ir
, false, false, options
,
2010 ctx
->Const
.NativeIntegers
))
2014 validate_ir_tree(shader
->ir
);
2016 enum ir_variable_mode other
;
2017 switch (shader
->Stage
) {
2018 case MESA_SHADER_VERTEX
:
2019 other
= ir_var_shader_in
;
2021 case MESA_SHADER_FRAGMENT
:
2022 other
= ir_var_shader_out
;
2025 /* Something invalid to ensure optimize_dead_builtin_uniforms
2026 * doesn't remove anything other than uniforms or constants.
2028 other
= ir_var_mode_count
;
2032 optimize_dead_builtin_variables(shader
->ir
, other
);
2034 validate_ir_tree(shader
->ir
);
2036 /* Retain any live IR, but trash the rest. */
2037 reparent_ir(shader
->ir
, shader
->ir
);
2039 /* Destroy the symbol table. Create a new symbol table that contains only
2040 * the variables and functions that still exist in the IR. The symbol
2041 * table will be used later during linking.
2043 * There must NOT be any freed objects still referenced by the symbol
2044 * table. That could cause the linker to dereference freed memory.
2046 * We don't have to worry about types or interface-types here because those
2047 * are fly-weights that are looked up by glsl_type.
2049 _mesa_glsl_copy_symbols_from_table(shader
->ir
, source_symbols
,
2054 _mesa_glsl_compile_shader(struct gl_context
*ctx
, struct gl_shader
*shader
,
2055 bool dump_ast
, bool dump_hir
, bool force_recompile
)
2057 const char *source
= force_recompile
&& shader
->FallbackSource
?
2058 shader
->FallbackSource
: shader
->Source
;
2060 if (!force_recompile
) {
2063 disk_cache_compute_key(ctx
->Cache
, source
, strlen(source
),
2065 if (disk_cache_has_key(ctx
->Cache
, shader
->sha1
)) {
2066 /* We've seen this shader before and know it compiles */
2067 if (ctx
->_Shader
->Flags
& GLSL_CACHE_INFO
) {
2068 _mesa_sha1_format(buf
, shader
->sha1
);
2069 fprintf(stderr
, "deferring compile of shader: %s\n", buf
);
2071 shader
->CompileStatus
= COMPILE_SKIPPED
;
2073 free((void *)shader
->FallbackSource
);
2074 shader
->FallbackSource
= NULL
;
2079 /* We should only ever end up here if a re-compile has been forced by a
2080 * shader cache miss. In which case we can skip the compile if its
2081 * already be done by a previous fallback or the initial compile call.
2083 if (shader
->CompileStatus
== COMPILE_SUCCESS
)
2086 if (shader
->CompileStatus
== COMPILED_NO_OPTS
) {
2087 opt_shader_and_create_symbol_table(ctx
,
2088 NULL
, /* source_symbols */
2090 shader
->CompileStatus
= COMPILE_SUCCESS
;
2095 struct _mesa_glsl_parse_state
*state
=
2096 new(shader
) _mesa_glsl_parse_state(ctx
, shader
->Stage
, shader
);
2098 if (ctx
->Const
.GenerateTemporaryNames
)
2099 (void) p_atomic_cmpxchg(&ir_variable::temporaries_allocate_names
,
2102 state
->error
= glcpp_preprocess(state
, &source
, &state
->info_log
,
2103 add_builtin_defines
, state
, ctx
);
2105 if (!state
->error
) {
2106 _mesa_glsl_lexer_ctor(state
, source
);
2107 _mesa_glsl_parse(state
);
2108 _mesa_glsl_lexer_dtor(state
);
2109 do_late_parsing_checks(state
);
2113 foreach_list_typed(ast_node
, ast
, link
, &state
->translation_unit
) {
2119 ralloc_free(shader
->ir
);
2120 shader
->ir
= new(shader
) exec_list
;
2121 if (!state
->error
&& !state
->translation_unit
.is_empty())
2122 _mesa_ast_to_hir(shader
->ir
, state
);
2124 if (!state
->error
) {
2125 validate_ir_tree(shader
->ir
);
2127 /* Print out the unoptimized IR. */
2129 _mesa_print_ir(stdout
, shader
->ir
, state
);
2133 if (shader
->InfoLog
)
2134 ralloc_free(shader
->InfoLog
);
2137 set_shader_inout_layout(shader
, state
);
2139 shader
->symbols
= new(shader
->ir
) glsl_symbol_table
;
2140 shader
->CompileStatus
= state
->error
? COMPILE_FAILURE
: COMPILE_SUCCESS
;
2141 shader
->InfoLog
= state
->info_log
;
2142 shader
->Version
= state
->language_version
;
2143 shader
->IsES
= state
->es_shader
;
2145 if (!state
->error
&& !shader
->ir
->is_empty()) {
2146 assign_subroutine_indexes(state
);
2147 lower_subroutine(shader
->ir
, state
);
2149 if (!ctx
->Cache
|| force_recompile
)
2150 opt_shader_and_create_symbol_table(ctx
, state
->symbols
, shader
);
2152 reparent_ir(shader
->ir
, shader
->ir
);
2153 shader
->CompileStatus
= COMPILED_NO_OPTS
;
2157 if (!force_recompile
) {
2158 free((void *)shader
->FallbackSource
);
2159 shader
->FallbackSource
= NULL
;
2162 delete state
->symbols
;
2168 * Do the set of common optimizations passes
2170 * \param ir List of instructions to be optimized
2171 * \param linked Is the shader linked? This enables
2172 * optimizations passes that remove code at
2173 * global scope and could cause linking to
2175 * \param uniform_locations_assigned Have locations already been assigned for
2176 * uniforms? This prevents the declarations
2177 * of unused uniforms from being removed.
2178 * The setting of this flag only matters if
2179 * \c linked is \c true.
2180 * \param options The driver's preferred shader options.
2181 * \param native_integers Selects optimizations that depend on the
2182 * implementations supporting integers
2183 * natively (as opposed to supporting
2184 * integers in floating point registers).
2187 do_common_optimization(exec_list
*ir
, bool linked
,
2188 bool uniform_locations_assigned
,
2189 const struct gl_shader_compiler_options
*options
,
2190 bool native_integers
)
2192 const bool debug
= false;
2193 GLboolean progress
= GL_FALSE
;
2195 #define OPT(PASS, ...) do { \
2197 fprintf(stderr, "START GLSL optimization %s\n", #PASS); \
2198 const bool opt_progress = PASS(__VA_ARGS__); \
2199 progress = opt_progress || progress; \
2201 _mesa_print_ir(stderr, ir, NULL); \
2202 fprintf(stderr, "GLSL optimization %s: %s progress\n", \
2203 #PASS, opt_progress ? "made" : "no"); \
2205 progress = PASS(__VA_ARGS__) || progress; \
2209 OPT(lower_instructions
, ir
, SUB_TO_ADD_NEG
);
2212 OPT(do_function_inlining
, ir
);
2213 OPT(do_dead_functions
, ir
);
2214 OPT(do_structure_splitting
, ir
);
2216 propagate_invariance(ir
);
2217 OPT(do_if_simplification
, ir
);
2218 OPT(opt_flatten_nested_if_blocks
, ir
);
2219 OPT(opt_conditional_discard
, ir
);
2220 OPT(do_copy_propagation_elements
, ir
);
2222 if (options
->OptimizeForAOS
&& !linked
)
2223 OPT(opt_flip_matrices
, ir
);
2225 if (linked
&& options
->OptimizeForAOS
) {
2226 OPT(do_vectorize
, ir
);
2230 OPT(do_dead_code
, ir
, uniform_locations_assigned
);
2232 OPT(do_dead_code_unlinked
, ir
);
2233 OPT(do_dead_code_local
, ir
);
2234 OPT(do_tree_grafting
, ir
);
2235 OPT(do_constant_propagation
, ir
);
2237 OPT(do_constant_variable
, ir
);
2239 OPT(do_constant_variable_unlinked
, ir
);
2240 OPT(do_constant_folding
, ir
);
2241 OPT(do_minmax_prune
, ir
);
2242 OPT(do_rebalance_tree
, ir
);
2243 OPT(do_algebraic
, ir
, native_integers
, options
);
2244 OPT(do_lower_jumps
, ir
, true, true, options
->EmitNoMainReturn
,
2245 options
->EmitNoCont
, options
->EmitNoLoops
);
2246 OPT(do_vec_index_to_swizzle
, ir
);
2247 OPT(lower_vector_insert
, ir
, false);
2248 OPT(optimize_swizzles
, ir
);
2250 OPT(optimize_split_arrays
, ir
, linked
);
2251 OPT(optimize_redundant_jumps
, ir
);
2253 if (options
->MaxUnrollIterations
) {
2254 loop_state
*ls
= analyze_loop_variables(ir
);
2255 if (ls
->loop_found
) {
2256 bool loop_progress
= unroll_loops(ir
, ls
, options
);
2257 while (loop_progress
) {
2258 loop_progress
= false;
2259 loop_progress
|= do_constant_propagation(ir
);
2260 loop_progress
|= do_if_simplification(ir
);
2262 /* Some drivers only call do_common_optimization() once rather
2263 * than in a loop. So we must call do_lower_jumps() after
2264 * unrolling a loop because for drivers that use LLVM validation
2265 * will fail if a jump is not the last instruction in the block.
2266 * For example the following will fail LLVM validation:
2271 * (assign (x) (var_ref v124) (expression int + (var_ref v124)
2272 * (constant int (1)) ) )
2275 loop_progress
|= do_lower_jumps(ir
, true, true,
2276 options
->EmitNoMainReturn
,
2277 options
->EmitNoCont
,
2278 options
->EmitNoLoops
);
2280 progress
|= loop_progress
;
2293 * To be called at GL teardown time, this frees compiler datastructures.
2295 * After calling this, any previously compiled shaders and shader
2296 * programs would be invalid. So this should happen at approximately
2300 _mesa_destroy_shader_compiler(void)
2302 _mesa_destroy_shader_compiler_caches();
2304 _mesa_glsl_release_types();
2308 * Releases compiler caches to trade off performance for memory.
2310 * Intended to be used with glReleaseShaderCompiler().
2313 _mesa_destroy_shader_compiler_caches(void)
2315 _mesa_glsl_release_builtin_functions();