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.
28 #include "main/core.h" /* for struct gl_context */
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"
36 #include "glsl_parser_extras.h"
37 #include "glsl_parser.h"
38 #include "ir_optimization.h"
39 #include "loop_analysis.h"
42 * Format a short human-readable description of the given GLSL version.
45 glsl_compute_version_string(void *mem_ctx
, bool is_es
, unsigned version
)
47 return ralloc_asprintf(mem_ctx
, "GLSL%s %d.%02d", is_es
? " ES" : "",
48 version
/ 100, version
% 100);
52 static const unsigned known_desktop_glsl_versions
[] =
53 { 110, 120, 130, 140, 150, 330, 400, 410, 420, 430, 440, 450 };
54 static const unsigned known_desktop_gl_versions
[] =
55 { 20, 21, 30, 31, 32, 33, 40, 41, 42, 43, 44, 45 };
58 _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context
*_ctx
,
59 gl_shader_stage stage
,
61 : ctx(_ctx
), cs_input_local_size_specified(false), cs_input_local_size(),
64 assert(stage
< MESA_SHADER_STAGES
);
68 this->translation_unit
.make_empty();
69 this->symbols
= new(mem_ctx
) glsl_symbol_table
;
71 this->linalloc
= linear_alloc_parent(this, 0);
73 this->info_log
= ralloc_strdup(mem_ctx
, "");
75 this->loop_nesting_ast
= NULL
;
77 this->uses_builtin_functions
= false;
79 /* Set default language version and extensions */
80 this->language_version
= 110;
81 this->forced_language_version
= ctx
->Const
.ForceGLSLVersion
;
82 this->zero_init
= ctx
->Const
.GLSLZeroInit
;
83 this->gl_version
= 20;
84 this->es_shader
= false;
85 this->ARB_texture_rectangle_enable
= true;
87 /* OpenGL ES 2.0 has different defaults from desktop GL. */
88 if (ctx
->API
== API_OPENGLES2
) {
89 this->language_version
= 100;
90 this->es_shader
= true;
91 this->ARB_texture_rectangle_enable
= false;
94 this->extensions
= &ctx
->Extensions
;
96 this->Const
.MaxLights
= ctx
->Const
.MaxLights
;
97 this->Const
.MaxClipPlanes
= ctx
->Const
.MaxClipPlanes
;
98 this->Const
.MaxTextureUnits
= ctx
->Const
.MaxTextureUnits
;
99 this->Const
.MaxTextureCoords
= ctx
->Const
.MaxTextureCoordUnits
;
100 this->Const
.MaxVertexAttribs
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
;
101 this->Const
.MaxVertexUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxUniformComponents
;
102 this->Const
.MaxVertexTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
;
103 this->Const
.MaxCombinedTextureImageUnits
= ctx
->Const
.MaxCombinedTextureImageUnits
;
104 this->Const
.MaxTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
;
105 this->Const
.MaxFragmentUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxUniformComponents
;
106 this->Const
.MinProgramTexelOffset
= ctx
->Const
.MinProgramTexelOffset
;
107 this->Const
.MaxProgramTexelOffset
= ctx
->Const
.MaxProgramTexelOffset
;
109 this->Const
.MaxDrawBuffers
= ctx
->Const
.MaxDrawBuffers
;
111 this->Const
.MaxDualSourceDrawBuffers
= ctx
->Const
.MaxDualSourceDrawBuffers
;
114 this->Const
.MaxVertexOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
;
115 this->Const
.MaxGeometryInputComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
;
116 this->Const
.MaxGeometryOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
;
117 this->Const
.MaxFragmentInputComponents
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
;
118 this->Const
.MaxGeometryTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
;
119 this->Const
.MaxGeometryOutputVertices
= ctx
->Const
.MaxGeometryOutputVertices
;
120 this->Const
.MaxGeometryTotalOutputComponents
= ctx
->Const
.MaxGeometryTotalOutputComponents
;
121 this->Const
.MaxGeometryUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxUniformComponents
;
123 this->Const
.MaxVertexAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicCounters
;
124 this->Const
.MaxTessControlAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicCounters
;
125 this->Const
.MaxTessEvaluationAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicCounters
;
126 this->Const
.MaxGeometryAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
;
127 this->Const
.MaxFragmentAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
;
128 this->Const
.MaxComputeAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicCounters
;
129 this->Const
.MaxCombinedAtomicCounters
= ctx
->Const
.MaxCombinedAtomicCounters
;
130 this->Const
.MaxAtomicBufferBindings
= ctx
->Const
.MaxAtomicBufferBindings
;
131 this->Const
.MaxVertexAtomicCounterBuffers
=
132 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
;
133 this->Const
.MaxTessControlAtomicCounterBuffers
=
134 ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicBuffers
;
135 this->Const
.MaxTessEvaluationAtomicCounterBuffers
=
136 ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicBuffers
;
137 this->Const
.MaxGeometryAtomicCounterBuffers
=
138 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
;
139 this->Const
.MaxFragmentAtomicCounterBuffers
=
140 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
;
141 this->Const
.MaxComputeAtomicCounterBuffers
=
142 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicBuffers
;
143 this->Const
.MaxCombinedAtomicCounterBuffers
=
144 ctx
->Const
.MaxCombinedAtomicBuffers
;
145 this->Const
.MaxAtomicCounterBufferSize
=
146 ctx
->Const
.MaxAtomicBufferSize
;
148 /* ARB_enhanced_layouts constants */
149 this->Const
.MaxTransformFeedbackBuffers
= ctx
->Const
.MaxTransformFeedbackBuffers
;
150 this->Const
.MaxTransformFeedbackInterleavedComponents
= ctx
->Const
.MaxTransformFeedbackInterleavedComponents
;
152 /* Compute shader constants */
153 for (unsigned i
= 0; i
< ARRAY_SIZE(this->Const
.MaxComputeWorkGroupCount
); i
++)
154 this->Const
.MaxComputeWorkGroupCount
[i
] = ctx
->Const
.MaxComputeWorkGroupCount
[i
];
155 for (unsigned i
= 0; i
< ARRAY_SIZE(this->Const
.MaxComputeWorkGroupSize
); i
++)
156 this->Const
.MaxComputeWorkGroupSize
[i
] = ctx
->Const
.MaxComputeWorkGroupSize
[i
];
158 this->Const
.MaxComputeTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
;
159 this->Const
.MaxComputeUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxUniformComponents
;
161 this->Const
.MaxImageUnits
= ctx
->Const
.MaxImageUnits
;
162 this->Const
.MaxCombinedShaderOutputResources
= ctx
->Const
.MaxCombinedShaderOutputResources
;
163 this->Const
.MaxImageSamples
= ctx
->Const
.MaxImageSamples
;
164 this->Const
.MaxVertexImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxImageUniforms
;
165 this->Const
.MaxTessControlImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxImageUniforms
;
166 this->Const
.MaxTessEvaluationImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxImageUniforms
;
167 this->Const
.MaxGeometryImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxImageUniforms
;
168 this->Const
.MaxFragmentImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxImageUniforms
;
169 this->Const
.MaxComputeImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxImageUniforms
;
170 this->Const
.MaxCombinedImageUniforms
= ctx
->Const
.MaxCombinedImageUniforms
;
172 /* ARB_viewport_array */
173 this->Const
.MaxViewports
= ctx
->Const
.MaxViewports
;
175 /* tessellation shader constants */
176 this->Const
.MaxPatchVertices
= ctx
->Const
.MaxPatchVertices
;
177 this->Const
.MaxTessGenLevel
= ctx
->Const
.MaxTessGenLevel
;
178 this->Const
.MaxTessControlInputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxInputComponents
;
179 this->Const
.MaxTessControlOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxOutputComponents
;
180 this->Const
.MaxTessControlTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxTextureImageUnits
;
181 this->Const
.MaxTessEvaluationInputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxInputComponents
;
182 this->Const
.MaxTessEvaluationOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxOutputComponents
;
183 this->Const
.MaxTessEvaluationTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxTextureImageUnits
;
184 this->Const
.MaxTessPatchComponents
= ctx
->Const
.MaxTessPatchComponents
;
185 this->Const
.MaxTessControlTotalOutputComponents
= ctx
->Const
.MaxTessControlTotalOutputComponents
;
186 this->Const
.MaxTessControlUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxUniformComponents
;
187 this->Const
.MaxTessEvaluationUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxUniformComponents
;
189 /* GL 4.5 / OES_sample_variables */
190 this->Const
.MaxSamples
= ctx
->Const
.MaxSamples
;
192 this->current_function
= NULL
;
193 this->toplevel_ir
= NULL
;
194 this->found_return
= false;
195 this->all_invariant
= false;
196 this->user_structures
= NULL
;
197 this->num_user_structures
= 0;
198 this->num_subroutines
= 0;
199 this->subroutines
= NULL
;
200 this->num_subroutine_types
= 0;
201 this->subroutine_types
= NULL
;
203 /* supported_versions should be large enough to support the known desktop
204 * GLSL versions plus 4 GLES versions (ES 1.00, ES 3.00, ES 3.10, ES 3.20)
206 STATIC_ASSERT((ARRAY_SIZE(known_desktop_glsl_versions
) + 4) ==
207 ARRAY_SIZE(this->supported_versions
));
209 /* Populate the list of supported GLSL versions */
210 /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or
211 * the OpenGL 3.2 Core context is supported, this logic will need
212 * change. Older versions of GLSL are no longer supported
213 * outside the compatibility contexts of 3.x.
215 this->num_supported_versions
= 0;
216 if (_mesa_is_desktop_gl(ctx
)) {
217 for (unsigned i
= 0; i
< ARRAY_SIZE(known_desktop_glsl_versions
); i
++) {
218 if (known_desktop_glsl_versions
[i
] <= ctx
->Const
.GLSLVersion
) {
219 this->supported_versions
[this->num_supported_versions
].ver
220 = known_desktop_glsl_versions
[i
];
221 this->supported_versions
[this->num_supported_versions
].gl_ver
222 = known_desktop_gl_versions
[i
];
223 this->supported_versions
[this->num_supported_versions
].es
= false;
224 this->num_supported_versions
++;
228 if (ctx
->API
== API_OPENGLES2
|| ctx
->Extensions
.ARB_ES2_compatibility
) {
229 this->supported_versions
[this->num_supported_versions
].ver
= 100;
230 this->supported_versions
[this->num_supported_versions
].gl_ver
= 20;
231 this->supported_versions
[this->num_supported_versions
].es
= true;
232 this->num_supported_versions
++;
234 if (_mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_ES3_compatibility
) {
235 this->supported_versions
[this->num_supported_versions
].ver
= 300;
236 this->supported_versions
[this->num_supported_versions
].gl_ver
= 30;
237 this->supported_versions
[this->num_supported_versions
].es
= true;
238 this->num_supported_versions
++;
240 if (_mesa_is_gles31(ctx
) || ctx
->Extensions
.ARB_ES3_1_compatibility
) {
241 this->supported_versions
[this->num_supported_versions
].ver
= 310;
242 this->supported_versions
[this->num_supported_versions
].gl_ver
= 31;
243 this->supported_versions
[this->num_supported_versions
].es
= true;
244 this->num_supported_versions
++;
246 if ((ctx
->API
== API_OPENGLES2
&& ctx
->Version
>= 32) ||
247 ctx
->Extensions
.ARB_ES3_2_compatibility
) {
248 this->supported_versions
[this->num_supported_versions
].ver
= 320;
249 this->supported_versions
[this->num_supported_versions
].gl_ver
= 32;
250 this->supported_versions
[this->num_supported_versions
].es
= true;
251 this->num_supported_versions
++;
254 /* Create a string for use in error messages to tell the user which GLSL
255 * versions are supported.
257 char *supported
= ralloc_strdup(this, "");
258 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
259 unsigned ver
= this->supported_versions
[i
].ver
;
260 const char *const prefix
= (i
== 0)
262 : ((i
== this->num_supported_versions
- 1) ? ", and " : ", ");
263 const char *const suffix
= (this->supported_versions
[i
].es
) ? " ES" : "";
265 ralloc_asprintf_append(& supported
, "%s%u.%02u%s",
267 ver
/ 100, ver
% 100,
271 this->supported_version_string
= supported
;
273 if (ctx
->Const
.ForceGLSLExtensionsWarn
)
274 _mesa_glsl_process_extension("all", NULL
, "warn", NULL
, this);
276 this->default_uniform_qualifier
= new(this) ast_type_qualifier();
277 this->default_uniform_qualifier
->flags
.q
.shared
= 1;
278 this->default_uniform_qualifier
->flags
.q
.column_major
= 1;
280 this->default_shader_storage_qualifier
= new(this) ast_type_qualifier();
281 this->default_shader_storage_qualifier
->flags
.q
.shared
= 1;
282 this->default_shader_storage_qualifier
->flags
.q
.column_major
= 1;
284 this->fs_uses_gl_fragcoord
= false;
285 this->fs_redeclares_gl_fragcoord
= false;
286 this->fs_origin_upper_left
= false;
287 this->fs_pixel_center_integer
= false;
288 this->fs_redeclares_gl_fragcoord_with_no_layout_qualifiers
= false;
290 this->gs_input_prim_type_specified
= false;
291 this->tcs_output_vertices_specified
= false;
292 this->gs_input_size
= 0;
293 this->in_qualifier
= new(this) ast_type_qualifier();
294 this->out_qualifier
= new(this) ast_type_qualifier();
295 this->fs_early_fragment_tests
= false;
296 this->fs_inner_coverage
= false;
297 this->fs_post_depth_coverage
= false;
298 this->fs_blend_support
= 0;
299 memset(this->atomic_counter_offsets
, 0,
300 sizeof(this->atomic_counter_offsets
));
301 this->allow_extension_directive_midshader
=
302 ctx
->Const
.AllowGLSLExtensionDirectiveMidShader
;
304 this->cs_input_local_size_variable_specified
= false;
308 * Determine whether the current GLSL version is sufficiently high to support
309 * a certain feature, and generate an error message if it isn't.
311 * \param required_glsl_version and \c required_glsl_es_version are
312 * interpreted as they are in _mesa_glsl_parse_state::is_version().
314 * \param locp is the parser location where the error should be reported.
316 * \param fmt (and additional arguments) constitute a printf-style error
317 * message to report if the version check fails. Information about the
318 * current and required GLSL versions will be appended. So, for example, if
319 * the GLSL version being compiled is 1.20, and check_version(130, 300, locp,
320 * "foo unsupported") is called, the error message will be "foo unsupported in
321 * GLSL 1.20 (GLSL 1.30 or GLSL 3.00 ES required)".
324 _mesa_glsl_parse_state::check_version(unsigned required_glsl_version
,
325 unsigned required_glsl_es_version
,
326 YYLTYPE
*locp
, const char *fmt
, ...)
328 if (this->is_version(required_glsl_version
, required_glsl_es_version
))
333 char *problem
= ralloc_vasprintf(this, fmt
, args
);
335 const char *glsl_version_string
336 = glsl_compute_version_string(this, false, required_glsl_version
);
337 const char *glsl_es_version_string
338 = glsl_compute_version_string(this, true, required_glsl_es_version
);
339 const char *requirement_string
= "";
340 if (required_glsl_version
&& required_glsl_es_version
) {
341 requirement_string
= ralloc_asprintf(this, " (%s or %s required)",
343 glsl_es_version_string
);
344 } else if (required_glsl_version
) {
345 requirement_string
= ralloc_asprintf(this, " (%s required)",
346 glsl_version_string
);
347 } else if (required_glsl_es_version
) {
348 requirement_string
= ralloc_asprintf(this, " (%s required)",
349 glsl_es_version_string
);
351 _mesa_glsl_error(locp
, this, "%s in %s%s",
352 problem
, this->get_version_string(),
359 * Process a GLSL #version directive.
361 * \param version is the integer that follows the #version token.
363 * \param ident is a string identifier that follows the integer, if any is
364 * present. Otherwise NULL.
367 _mesa_glsl_parse_state::process_version_directive(YYLTYPE
*locp
, int version
,
370 bool es_token_present
= false;
372 if (strcmp(ident
, "es") == 0) {
373 es_token_present
= true;
374 } else if (version
>= 150) {
375 if (strcmp(ident
, "core") == 0) {
376 /* Accept the token. There's no need to record that this is
377 * a core profile shader since that's the only profile we support.
379 } else if (strcmp(ident
, "compatibility") == 0) {
380 _mesa_glsl_error(locp
, this,
381 "the compatibility profile is not supported");
383 _mesa_glsl_error(locp
, this,
384 "\"%s\" is not a valid shading language profile; "
385 "if present, it must be \"core\"", ident
);
388 _mesa_glsl_error(locp
, this,
389 "illegal text following version number");
393 this->es_shader
= es_token_present
;
394 if (version
== 100) {
395 if (es_token_present
) {
396 _mesa_glsl_error(locp
, this,
397 "GLSL 1.00 ES should be selected using "
400 this->es_shader
= true;
404 if (this->es_shader
) {
405 this->ARB_texture_rectangle_enable
= false;
408 if (this->forced_language_version
)
409 this->language_version
= this->forced_language_version
;
411 this->language_version
= version
;
413 bool supported
= false;
414 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
415 if (this->supported_versions
[i
].ver
== this->language_version
416 && this->supported_versions
[i
].es
== this->es_shader
) {
417 this->gl_version
= this->supported_versions
[i
].gl_ver
;
424 _mesa_glsl_error(locp
, this, "%s is not supported. "
425 "Supported versions are: %s",
426 this->get_version_string(),
427 this->supported_version_string
);
429 /* On exit, the language_version must be set to a valid value.
430 * Later calls to _mesa_glsl_initialize_types will misbehave if
431 * the version is invalid.
433 switch (this->ctx
->API
) {
434 case API_OPENGL_COMPAT
:
435 case API_OPENGL_CORE
:
436 this->language_version
= this->ctx
->Const
.GLSLVersion
;
440 assert(!"Should not get here.");
444 this->language_version
= 100;
451 /* This helper function will append the given message to the shader's
452 info log and report it via GL_ARB_debug_output. Per that extension,
453 'type' is one of the enum values classifying the message, and
454 'id' is the implementation-defined ID of the given message. */
456 _mesa_glsl_msg(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
457 GLenum type
, const char *fmt
, va_list ap
)
459 bool error
= (type
== MESA_DEBUG_TYPE_ERROR
);
462 assert(state
->info_log
!= NULL
);
464 /* Get the offset that the new message will be written to. */
465 int msg_offset
= strlen(state
->info_log
);
467 ralloc_asprintf_append(&state
->info_log
, "%u:%u(%u): %s: ",
471 error
? "error" : "warning");
472 ralloc_vasprintf_append(&state
->info_log
, fmt
, ap
);
474 const char *const msg
= &state
->info_log
[msg_offset
];
475 struct gl_context
*ctx
= state
->ctx
;
477 /* Report the error via GL_ARB_debug_output. */
478 _mesa_shader_debug(ctx
, type
, &msg_id
, msg
);
480 ralloc_strcat(&state
->info_log
, "\n");
484 _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
485 const char *fmt
, ...)
492 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_ERROR
, fmt
, ap
);
498 _mesa_glsl_warning(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
499 const char *fmt
, ...)
504 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_OTHER
, fmt
, ap
);
510 * Enum representing the possible behaviors that can be specified in
511 * an #extension directive.
521 * Element type for _mesa_glsl_supported_extensions
523 struct _mesa_glsl_extension
{
525 * Name of the extension when referred to in a GLSL extension
531 * Whether this extension is a part of AEP
536 * Predicate that checks whether the relevant extension is available for
539 bool (*available_pred
)(const struct gl_context
*,
540 gl_api api
, uint8_t version
);
543 * Flag in the _mesa_glsl_parse_state struct that should be set
544 * when this extension is enabled.
546 * See note in _mesa_glsl_extension::supported_flag about "pointer
549 bool _mesa_glsl_parse_state::* enable_flag
;
552 * Flag in the _mesa_glsl_parse_state struct that should be set
553 * when the shader requests "warn" behavior for this extension.
555 * See note in _mesa_glsl_extension::supported_flag about "pointer
558 bool _mesa_glsl_parse_state::* warn_flag
;
561 bool compatible_with_state(const _mesa_glsl_parse_state
*state
,
562 gl_api api
, uint8_t gl_version
) const;
563 void set_flags(_mesa_glsl_parse_state
*state
, ext_behavior behavior
) const;
566 /** Checks if the context supports a user-facing extension */
567 #define EXT(name_str, driver_cap, ...) \
568 static MAYBE_UNUSED bool \
569 has_##name_str(const struct gl_context *ctx, gl_api api, uint8_t version) \
571 return ctx->Extensions.driver_cap && (version >= \
572 _mesa_extension_table[MESA_EXTENSION_##name_str].version[api]); \
574 #include "main/extensions_table.h"
578 { "GL_" #NAME, false, has_##NAME, \
579 &_mesa_glsl_parse_state::NAME##_enable, \
580 &_mesa_glsl_parse_state::NAME##_warn }
582 #define EXT_AEP(NAME) \
583 { "GL_" #NAME, true, has_##NAME, \
584 &_mesa_glsl_parse_state::NAME##_enable, \
585 &_mesa_glsl_parse_state::NAME##_warn }
588 * Table of extensions that can be enabled/disabled within a shader,
589 * and the conditions under which they are supported.
591 static const _mesa_glsl_extension _mesa_glsl_supported_extensions
[] = {
592 /* ARB extensions go here, sorted alphabetically.
594 EXT(ARB_ES3_1_compatibility
),
595 EXT(ARB_ES3_2_compatibility
),
596 EXT(ARB_arrays_of_arrays
),
597 EXT(ARB_compute_shader
),
598 EXT(ARB_compute_variable_group_size
),
599 EXT(ARB_conservative_depth
),
600 EXT(ARB_cull_distance
),
601 EXT(ARB_derivative_control
),
602 EXT(ARB_draw_buffers
),
603 EXT(ARB_draw_instanced
),
604 EXT(ARB_enhanced_layouts
),
605 EXT(ARB_explicit_attrib_location
),
606 EXT(ARB_explicit_uniform_location
),
607 EXT(ARB_fragment_coord_conventions
),
608 EXT(ARB_fragment_layer_viewport
),
609 EXT(ARB_gpu_shader5
),
610 EXT(ARB_gpu_shader_fp64
),
611 EXT(ARB_post_depth_coverage
),
612 EXT(ARB_sample_shading
),
613 EXT(ARB_separate_shader_objects
),
614 EXT(ARB_shader_atomic_counter_ops
),
615 EXT(ARB_shader_atomic_counters
),
616 EXT(ARB_shader_bit_encoding
),
617 EXT(ARB_shader_clock
),
618 EXT(ARB_shader_draw_parameters
),
619 EXT(ARB_shader_group_vote
),
620 EXT(ARB_shader_image_load_store
),
621 EXT(ARB_shader_image_size
),
622 EXT(ARB_shader_precision
),
623 EXT(ARB_shader_stencil_export
),
624 EXT(ARB_shader_storage_buffer_object
),
625 EXT(ARB_shader_subroutine
),
626 EXT(ARB_shader_texture_image_samples
),
627 EXT(ARB_shader_texture_lod
),
628 EXT(ARB_shader_viewport_layer_array
),
629 EXT(ARB_shading_language_420pack
),
630 EXT(ARB_shading_language_packing
),
631 EXT(ARB_tessellation_shader
),
632 EXT(ARB_texture_cube_map_array
),
633 EXT(ARB_texture_gather
),
634 EXT(ARB_texture_multisample
),
635 EXT(ARB_texture_query_levels
),
636 EXT(ARB_texture_query_lod
),
637 EXT(ARB_texture_rectangle
),
638 EXT(ARB_uniform_buffer_object
),
639 EXT(ARB_vertex_attrib_64bit
),
640 EXT(ARB_viewport_array
),
642 /* KHR extensions go here, sorted alphabetically.
644 EXT_AEP(KHR_blend_equation_advanced
),
646 /* OES extensions go here, sorted alphabetically.
648 EXT(OES_EGL_image_external
),
649 EXT(OES_geometry_point_size
),
650 EXT(OES_geometry_shader
),
651 EXT(OES_gpu_shader5
),
652 EXT(OES_primitive_bounding_box
),
653 EXT_AEP(OES_sample_variables
),
654 EXT_AEP(OES_shader_image_atomic
),
655 EXT(OES_shader_io_blocks
),
656 EXT_AEP(OES_shader_multisample_interpolation
),
657 EXT(OES_standard_derivatives
),
658 EXT(OES_tessellation_point_size
),
659 EXT(OES_tessellation_shader
),
661 EXT(OES_texture_buffer
),
662 EXT(OES_texture_cube_map_array
),
663 EXT_AEP(OES_texture_storage_multisample_2d_array
),
664 EXT(OES_viewport_array
),
666 /* All other extensions go here, sorted alphabetically.
668 EXT(AMD_conservative_depth
),
669 EXT(AMD_shader_stencil_export
),
670 EXT(AMD_shader_trinary_minmax
),
671 EXT(AMD_vertex_shader_layer
),
672 EXT(AMD_vertex_shader_viewport_index
),
673 EXT(ANDROID_extension_pack_es31a
),
674 EXT(EXT_blend_func_extended
),
675 EXT(EXT_draw_buffers
),
676 EXT(EXT_clip_cull_distance
),
677 EXT(EXT_geometry_point_size
),
678 EXT_AEP(EXT_geometry_shader
),
679 EXT_AEP(EXT_gpu_shader5
),
680 EXT_AEP(EXT_primitive_bounding_box
),
681 EXT(EXT_separate_shader_objects
),
682 EXT(EXT_shader_framebuffer_fetch
),
683 EXT(EXT_shader_integer_mix
),
684 EXT_AEP(EXT_shader_io_blocks
),
685 EXT(EXT_shader_samples_identical
),
686 EXT(EXT_tessellation_point_size
),
687 EXT_AEP(EXT_tessellation_shader
),
688 EXT(EXT_texture_array
),
689 EXT_AEP(EXT_texture_buffer
),
690 EXT_AEP(EXT_texture_cube_map_array
),
691 EXT(INTEL_conservative_rasterization
),
692 EXT(MESA_shader_integer_functions
),
693 EXT(NV_image_formats
),
700 * Determine whether a given extension is compatible with the target,
701 * API, and extension information in the current parser state.
703 bool _mesa_glsl_extension::compatible_with_state(
704 const _mesa_glsl_parse_state
*state
, gl_api api
, uint8_t gl_version
) const
706 return this->available_pred(state
->ctx
, api
, gl_version
);
710 * Set the appropriate flags in the parser state to establish the
711 * given behavior for this extension.
713 void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state
*state
,
714 ext_behavior behavior
) const
716 /* Note: the ->* operator indexes into state by the
717 * offsets this->enable_flag and this->warn_flag. See
718 * _mesa_glsl_extension::supported_flag for more info.
720 state
->*(this->enable_flag
) = (behavior
!= extension_disable
);
721 state
->*(this->warn_flag
) = (behavior
== extension_warn
);
725 * Find an extension by name in _mesa_glsl_supported_extensions. If
726 * the name is not found, return NULL.
728 static const _mesa_glsl_extension
*find_extension(const char *name
)
730 for (unsigned i
= 0; i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
731 if (strcmp(name
, _mesa_glsl_supported_extensions
[i
].name
) == 0) {
732 return &_mesa_glsl_supported_extensions
[i
];
739 _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
740 const char *behavior_string
, YYLTYPE
*behavior_locp
,
741 _mesa_glsl_parse_state
*state
)
743 uint8_t gl_version
= state
->ctx
->Extensions
.Version
;
744 gl_api api
= state
->ctx
->API
;
745 ext_behavior behavior
;
746 if (strcmp(behavior_string
, "warn") == 0) {
747 behavior
= extension_warn
;
748 } else if (strcmp(behavior_string
, "require") == 0) {
749 behavior
= extension_require
;
750 } else if (strcmp(behavior_string
, "enable") == 0) {
751 behavior
= extension_enable
;
752 } else if (strcmp(behavior_string
, "disable") == 0) {
753 behavior
= extension_disable
;
755 _mesa_glsl_error(behavior_locp
, state
,
756 "unknown extension behavior `%s'",
761 /* If we're in a desktop context but with an ES shader, use an ES API enum
762 * to verify extension availability.
764 if (state
->es_shader
&& api
!= API_OPENGLES2
)
766 /* Use the language-version derived GL version to extension checks, unless
767 * we're using meta, which sets the version to the max.
769 if (gl_version
!= 0xff)
770 gl_version
= state
->gl_version
;
772 if (strcmp(name
, "all") == 0) {
773 if ((behavior
== extension_enable
) || (behavior
== extension_require
)) {
774 _mesa_glsl_error(name_locp
, state
, "cannot %s all extensions",
775 (behavior
== extension_enable
)
776 ? "enable" : "require");
780 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
781 const _mesa_glsl_extension
*extension
782 = &_mesa_glsl_supported_extensions
[i
];
783 if (extension
->compatible_with_state(state
, api
, gl_version
)) {
784 _mesa_glsl_supported_extensions
[i
].set_flags(state
, behavior
);
789 const _mesa_glsl_extension
*extension
= find_extension(name
);
790 if (extension
&& extension
->compatible_with_state(state
, api
, gl_version
)) {
791 extension
->set_flags(state
, behavior
);
792 if (extension
->available_pred
== has_ANDROID_extension_pack_es31a
) {
794 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
795 const _mesa_glsl_extension
*extension
=
796 &_mesa_glsl_supported_extensions
[i
];
800 /* AEP should not be enabled if all of the sub-extensions can't
801 * also be enabled. This is not the proper layer to do such
802 * error-checking though.
804 assert(extension
->compatible_with_state(state
, api
, gl_version
));
805 extension
->set_flags(state
, behavior
);
809 static const char fmt
[] = "extension `%s' unsupported in %s shader";
811 if (behavior
== extension_require
) {
812 _mesa_glsl_error(name_locp
, state
, fmt
,
813 name
, _mesa_shader_stage_to_string(state
->stage
));
816 _mesa_glsl_warning(name_locp
, state
, fmt
,
817 name
, _mesa_shader_stage_to_string(state
->stage
));
827 * Recurses through <type> and <expr> if <expr> is an aggregate initializer
828 * and sets <expr>'s <constructor_type> field to <type>. Gives later functions
829 * (process_array_constructor, et al) sufficient information to do type
832 * Operates on assignments involving an aggregate initializer. E.g.,
834 * vec4 pos = {1.0, -1.0, 0.0, 1.0};
836 * or more ridiculously,
849 * {1.0, 2.0, 3.0, 4.0}, // a[0].v[0]
850 * {5.0, 6.0, 7.0, 8.0} // a[0].v[1]
855 * {1.0, 2.0, 3.0, 4.0}, // a[1].v[0]
856 * {5.0, 6.0, 7.0, 8.0} // a[1].v[1]
862 * {1.0, 2.0, 3.0, 4.0}, // b.v[0]
863 * {5.0, 6.0, 7.0, 8.0} // b.v[1]
869 * This pass is necessary because the right-hand side of <type> e = { ... }
870 * doesn't contain sufficient information to determine if the types match.
873 _mesa_ast_set_aggregate_type(const glsl_type
*type
,
874 ast_expression
*expr
)
876 ast_aggregate_initializer
*ai
= (ast_aggregate_initializer
*)expr
;
877 ai
->constructor_type
= type
;
879 /* If the aggregate is an array, recursively set its elements' types. */
880 if (type
->is_array()) {
881 /* Each array element has the type type->fields.array.
883 * E.g., if <type> if struct S[2] we want to set each element's type to
886 for (exec_node
*expr_node
= ai
->expressions
.get_head_raw();
887 !expr_node
->is_tail_sentinel();
888 expr_node
= expr_node
->next
) {
889 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
892 if (expr
->oper
== ast_aggregate
)
893 _mesa_ast_set_aggregate_type(type
->fields
.array
, expr
);
896 /* If the aggregate is a struct, recursively set its fields' types. */
897 } else if (type
->is_record()) {
898 exec_node
*expr_node
= ai
->expressions
.get_head_raw();
900 /* Iterate through the struct's fields. */
901 for (unsigned i
= 0; !expr_node
->is_tail_sentinel() && i
< type
->length
;
902 i
++, expr_node
= expr_node
->next
) {
903 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
906 if (expr
->oper
== ast_aggregate
) {
907 _mesa_ast_set_aggregate_type(type
->fields
.structure
[i
].type
, expr
);
910 /* If the aggregate is a matrix, set its columns' types. */
911 } else if (type
->is_matrix()) {
912 for (exec_node
*expr_node
= ai
->expressions
.get_head_raw();
913 !expr_node
->is_tail_sentinel();
914 expr_node
= expr_node
->next
) {
915 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
918 if (expr
->oper
== ast_aggregate
)
919 _mesa_ast_set_aggregate_type(type
->column_type(), expr
);
925 _mesa_ast_process_interface_block(YYLTYPE
*locp
,
926 _mesa_glsl_parse_state
*state
,
927 ast_interface_block
*const block
,
928 const struct ast_type_qualifier
&q
)
930 if (q
.flags
.q
.buffer
) {
931 if (!state
->has_shader_storage_buffer_objects()) {
932 _mesa_glsl_error(locp
, state
,
933 "#version 430 / GL_ARB_shader_storage_buffer_object "
934 "required for defining shader storage blocks");
935 } else if (state
->ARB_shader_storage_buffer_object_warn
) {
936 _mesa_glsl_warning(locp
, state
,
937 "#version 430 / GL_ARB_shader_storage_buffer_object "
938 "required for defining shader storage blocks");
940 } else if (q
.flags
.q
.uniform
) {
941 if (!state
->has_uniform_buffer_objects()) {
942 _mesa_glsl_error(locp
, state
,
943 "#version 140 / GL_ARB_uniform_buffer_object "
944 "required for defining uniform blocks");
945 } else if (state
->ARB_uniform_buffer_object_warn
) {
946 _mesa_glsl_warning(locp
, state
,
947 "#version 140 / GL_ARB_uniform_buffer_object "
948 "required for defining uniform blocks");
951 if (!state
->has_shader_io_blocks()) {
952 if (state
->es_shader
) {
953 _mesa_glsl_error(locp
, state
,
954 "GL_OES_shader_io_blocks or #version 320 "
955 "required for using interface blocks");
957 _mesa_glsl_error(locp
, state
,
958 "#version 150 required for using "
964 /* From the GLSL 1.50.11 spec, section 4.3.7 ("Interface Blocks"):
965 * "It is illegal to have an input block in a vertex shader
966 * or an output block in a fragment shader"
968 if ((state
->stage
== MESA_SHADER_VERTEX
) && q
.flags
.q
.in
) {
969 _mesa_glsl_error(locp
, state
,
970 "`in' interface block is not allowed for "
972 } else if ((state
->stage
== MESA_SHADER_FRAGMENT
) && q
.flags
.q
.out
) {
973 _mesa_glsl_error(locp
, state
,
974 "`out' interface block is not allowed for "
975 "a fragment shader");
978 /* Since block arrays require names, and both features are added in
979 * the same language versions, we don't have to explicitly
980 * version-check both things.
982 if (block
->instance_name
!= NULL
) {
983 state
->check_version(150, 300, locp
, "interface blocks with "
984 "an instance name are not allowed");
987 uint64_t interface_type_mask
;
988 struct ast_type_qualifier temp_type_qualifier
;
990 /* Get a bitmask containing only the in/out/uniform/buffer
991 * flags, allowing us to ignore other irrelevant flags like
992 * interpolation qualifiers.
994 temp_type_qualifier
.flags
.i
= 0;
995 temp_type_qualifier
.flags
.q
.uniform
= true;
996 temp_type_qualifier
.flags
.q
.in
= true;
997 temp_type_qualifier
.flags
.q
.out
= true;
998 temp_type_qualifier
.flags
.q
.buffer
= true;
999 temp_type_qualifier
.flags
.q
.patch
= true;
1000 interface_type_mask
= temp_type_qualifier
.flags
.i
;
1002 /* Get the block's interface qualifier. The interface_qualifier
1003 * production rule guarantees that only one bit will be set (and
1004 * it will be in/out/uniform).
1006 uint64_t block_interface_qualifier
= q
.flags
.i
;
1008 block
->default_layout
.flags
.i
|= block_interface_qualifier
;
1010 if (state
->stage
== MESA_SHADER_GEOMETRY
&&
1011 state
->has_explicit_attrib_stream() &&
1012 block
->default_layout
.flags
.q
.out
) {
1013 /* Assign global layout's stream value. */
1014 block
->default_layout
.flags
.q
.stream
= 1;
1015 block
->default_layout
.flags
.q
.explicit_stream
= 0;
1016 block
->default_layout
.stream
= state
->out_qualifier
->stream
;
1019 if (state
->has_enhanced_layouts() && block
->default_layout
.flags
.q
.out
) {
1020 /* Assign global layout's xfb_buffer value. */
1021 block
->default_layout
.flags
.q
.xfb_buffer
= 1;
1022 block
->default_layout
.flags
.q
.explicit_xfb_buffer
= 0;
1023 block
->default_layout
.xfb_buffer
= state
->out_qualifier
->xfb_buffer
;
1026 foreach_list_typed (ast_declarator_list
, member
, link
, &block
->declarations
) {
1027 ast_type_qualifier
& qualifier
= member
->type
->qualifier
;
1028 if ((qualifier
.flags
.i
& interface_type_mask
) == 0) {
1029 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1030 * "If no optional qualifier is used in a member declaration, the
1031 * qualifier of the variable is just in, out, or uniform as declared
1032 * by interface-qualifier."
1034 qualifier
.flags
.i
|= block_interface_qualifier
;
1035 } else if ((qualifier
.flags
.i
& interface_type_mask
) !=
1036 block_interface_qualifier
) {
1037 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1038 * "If optional qualifiers are used, they can include interpolation
1039 * and storage qualifiers and they must declare an input, output,
1040 * or uniform variable consistent with the interface qualifier of
1043 _mesa_glsl_error(locp
, state
,
1044 "uniform/in/out qualifier on "
1045 "interface block member does not match "
1046 "the interface block");
1049 if (!(q
.flags
.q
.in
|| q
.flags
.q
.out
) && qualifier
.flags
.q
.invariant
)
1050 _mesa_glsl_error(locp
, state
,
1051 "invariant qualifiers can be used only "
1052 "in interface block members for shader "
1053 "inputs or outputs");
1058 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier
*q
)
1060 if (q
->flags
.q
.subroutine
)
1061 printf("subroutine ");
1063 if (q
->flags
.q
.subroutine_def
) {
1064 printf("subroutine (");
1065 q
->subroutine_list
->print();
1069 if (q
->flags
.q
.constant
)
1072 if (q
->flags
.q
.invariant
)
1073 printf("invariant ");
1075 if (q
->flags
.q
.attribute
)
1076 printf("attribute ");
1078 if (q
->flags
.q
.varying
)
1081 if (q
->flags
.q
.in
&& q
->flags
.q
.out
)
1091 if (q
->flags
.q
.centroid
)
1092 printf("centroid ");
1093 if (q
->flags
.q
.sample
)
1095 if (q
->flags
.q
.patch
)
1097 if (q
->flags
.q
.uniform
)
1099 if (q
->flags
.q
.buffer
)
1101 if (q
->flags
.q
.smooth
)
1103 if (q
->flags
.q
.flat
)
1105 if (q
->flags
.q
.noperspective
)
1106 printf("noperspective ");
1111 ast_node::print(void) const
1113 printf("unhandled node ");
1117 ast_node::ast_node(void)
1119 this->location
.source
= 0;
1120 this->location
.first_line
= 0;
1121 this->location
.first_column
= 0;
1122 this->location
.last_line
= 0;
1123 this->location
.last_column
= 0;
1128 ast_opt_array_dimensions_print(const ast_array_specifier
*array_specifier
)
1130 if (array_specifier
)
1131 array_specifier
->print();
1136 ast_compound_statement::print(void) const
1140 foreach_list_typed(ast_node
, ast
, link
, &this->statements
) {
1148 ast_compound_statement::ast_compound_statement(int new_scope
,
1149 ast_node
*statements
)
1151 this->new_scope
= new_scope
;
1153 if (statements
!= NULL
) {
1154 this->statements
.push_degenerate_list_at_head(&statements
->link
);
1160 ast_expression::print(void) const
1164 case ast_mul_assign
:
1165 case ast_div_assign
:
1166 case ast_mod_assign
:
1167 case ast_add_assign
:
1168 case ast_sub_assign
:
1171 case ast_and_assign
:
1172 case ast_xor_assign
:
1174 subexpressions
[0]->print();
1175 printf("%s ", operator_string(oper
));
1176 subexpressions
[1]->print();
1179 case ast_field_selection
:
1180 subexpressions
[0]->print();
1181 printf(". %s ", primary_expression
.identifier
);
1190 printf("%s ", operator_string(oper
));
1191 subexpressions
[0]->print();
1196 subexpressions
[0]->print();
1197 printf("%s ", operator_string(oper
));
1200 case ast_conditional
:
1201 subexpressions
[0]->print();
1203 subexpressions
[1]->print();
1205 subexpressions
[2]->print();
1208 case ast_array_index
:
1209 subexpressions
[0]->print();
1211 subexpressions
[1]->print();
1215 case ast_function_call
: {
1216 subexpressions
[0]->print();
1219 foreach_list_typed (ast_node
, ast
, link
, &this->expressions
) {
1220 if (&ast
->link
!= this->expressions
.get_head())
1230 case ast_identifier
:
1231 printf("%s ", primary_expression
.identifier
);
1234 case ast_int_constant
:
1235 printf("%d ", primary_expression
.int_constant
);
1238 case ast_uint_constant
:
1239 printf("%u ", primary_expression
.uint_constant
);
1242 case ast_float_constant
:
1243 printf("%f ", primary_expression
.float_constant
);
1246 case ast_double_constant
:
1247 printf("%f ", primary_expression
.double_constant
);
1250 case ast_bool_constant
:
1252 primary_expression
.bool_constant
1253 ? "true" : "false");
1256 case ast_sequence
: {
1258 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1259 if (&ast
->link
!= this->expressions
.get_head())
1268 case ast_aggregate
: {
1270 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1271 if (&ast
->link
!= this->expressions
.get_head())
1286 ast_expression::ast_expression(int oper
,
1287 ast_expression
*ex0
,
1288 ast_expression
*ex1
,
1289 ast_expression
*ex2
) :
1290 primary_expression()
1292 this->oper
= ast_operators(oper
);
1293 this->subexpressions
[0] = ex0
;
1294 this->subexpressions
[1] = ex1
;
1295 this->subexpressions
[2] = ex2
;
1296 this->non_lvalue_description
= NULL
;
1297 this->is_lhs
= false;
1302 ast_expression_statement::print(void) const
1305 expression
->print();
1311 ast_expression_statement::ast_expression_statement(ast_expression
*ex
) :
1319 ast_function::print(void) const
1321 return_type
->print();
1322 printf(" %s (", identifier
);
1324 foreach_list_typed(ast_node
, ast
, link
, & this->parameters
) {
1332 ast_function::ast_function(void)
1333 : return_type(NULL
), identifier(NULL
), is_definition(false),
1341 ast_fully_specified_type::print(void) const
1343 _mesa_ast_type_qualifier_print(& qualifier
);
1349 ast_parameter_declarator::print(void) const
1353 printf("%s ", identifier
);
1354 ast_opt_array_dimensions_print(array_specifier
);
1359 ast_function_definition::print(void) const
1367 ast_declaration::print(void) const
1369 printf("%s ", identifier
);
1370 ast_opt_array_dimensions_print(array_specifier
);
1374 initializer
->print();
1379 ast_declaration::ast_declaration(const char *identifier
,
1380 ast_array_specifier
*array_specifier
,
1381 ast_expression
*initializer
)
1383 this->identifier
= identifier
;
1384 this->array_specifier
= array_specifier
;
1385 this->initializer
= initializer
;
1390 ast_declarator_list::print(void) const
1392 assert(type
|| invariant
);
1397 printf("invariant ");
1401 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1402 if (&ast
->link
!= this->declarations
.get_head())
1412 ast_declarator_list::ast_declarator_list(ast_fully_specified_type
*type
)
1415 this->invariant
= false;
1416 this->precise
= false;
1420 ast_jump_statement::print(void) const
1424 printf("continue; ");
1431 if (opt_return_value
)
1432 opt_return_value
->print();
1437 printf("discard; ");
1443 ast_jump_statement::ast_jump_statement(int mode
, ast_expression
*return_value
)
1444 : opt_return_value(NULL
)
1446 this->mode
= ast_jump_modes(mode
);
1448 if (mode
== ast_return
)
1449 opt_return_value
= return_value
;
1454 ast_selection_statement::print(void) const
1460 then_statement
->print();
1462 if (else_statement
) {
1464 else_statement
->print();
1469 ast_selection_statement::ast_selection_statement(ast_expression
*condition
,
1470 ast_node
*then_statement
,
1471 ast_node
*else_statement
)
1473 this->condition
= condition
;
1474 this->then_statement
= then_statement
;
1475 this->else_statement
= else_statement
;
1480 ast_switch_statement::print(void) const
1482 printf("switch ( ");
1483 test_expression
->print();
1490 ast_switch_statement::ast_switch_statement(ast_expression
*test_expression
,
1493 this->test_expression
= test_expression
;
1499 ast_switch_body::print(void) const
1502 if (stmts
!= NULL
) {
1509 ast_switch_body::ast_switch_body(ast_case_statement_list
*stmts
)
1511 this->stmts
= stmts
;
1515 void ast_case_label::print(void) const
1517 if (test_value
!= NULL
) {
1519 test_value
->print();
1522 printf("default: ");
1527 ast_case_label::ast_case_label(ast_expression
*test_value
)
1529 this->test_value
= test_value
;
1533 void ast_case_label_list::print(void) const
1535 foreach_list_typed(ast_node
, ast
, link
, & this->labels
) {
1542 ast_case_label_list::ast_case_label_list(void)
1547 void ast_case_statement::print(void) const
1550 foreach_list_typed(ast_node
, ast
, link
, & this->stmts
) {
1557 ast_case_statement::ast_case_statement(ast_case_label_list
*labels
)
1559 this->labels
= labels
;
1563 void ast_case_statement_list::print(void) const
1565 foreach_list_typed(ast_node
, ast
, link
, & this->cases
) {
1571 ast_case_statement_list::ast_case_statement_list(void)
1577 ast_iteration_statement::print(void) const
1583 init_statement
->print();
1590 if (rest_expression
)
1591 rest_expression
->print();
1617 ast_iteration_statement::ast_iteration_statement(int mode
,
1619 ast_node
*condition
,
1620 ast_expression
*rest_expression
,
1623 this->mode
= ast_iteration_modes(mode
);
1624 this->init_statement
= init
;
1625 this->condition
= condition
;
1626 this->rest_expression
= rest_expression
;
1632 ast_struct_specifier::print(void) const
1634 printf("struct %s { ", name
);
1635 foreach_list_typed(ast_node
, ast
, link
, &this->declarations
) {
1642 ast_struct_specifier::ast_struct_specifier(void *lin_ctx
, const char *identifier
,
1643 ast_declarator_list
*declarator_list
)
1645 if (identifier
== NULL
) {
1646 static mtx_t mutex
= _MTX_INITIALIZER_NP
;
1647 static unsigned anon_count
= 1;
1651 count
= anon_count
++;
1654 identifier
= linear_asprintf(lin_ctx
, "#anon_struct_%04x", count
);
1657 this->declarations
.push_degenerate_list_at_head(&declarator_list
->link
);
1658 is_declaration
= true;
1662 void ast_subroutine_list::print(void) const
1664 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1665 if (&ast
->link
!= this->declarations
.get_head())
1672 set_shader_inout_layout(struct gl_shader
*shader
,
1673 struct _mesa_glsl_parse_state
*state
)
1675 /* Should have been prevented by the parser. */
1676 if (shader
->Stage
== MESA_SHADER_TESS_CTRL
||
1677 shader
->Stage
== MESA_SHADER_VERTEX
) {
1678 assert(!state
->in_qualifier
->flags
.i
);
1679 } else if (shader
->Stage
!= MESA_SHADER_GEOMETRY
&&
1680 shader
->Stage
!= MESA_SHADER_TESS_EVAL
) {
1681 assert(!state
->in_qualifier
->flags
.i
);
1684 if (shader
->Stage
!= MESA_SHADER_COMPUTE
) {
1685 /* Should have been prevented by the parser. */
1686 assert(!state
->cs_input_local_size_specified
);
1687 assert(!state
->cs_input_local_size_variable_specified
);
1690 if (shader
->Stage
!= MESA_SHADER_FRAGMENT
) {
1691 /* Should have been prevented by the parser. */
1692 assert(!state
->fs_uses_gl_fragcoord
);
1693 assert(!state
->fs_redeclares_gl_fragcoord
);
1694 assert(!state
->fs_pixel_center_integer
);
1695 assert(!state
->fs_origin_upper_left
);
1696 assert(!state
->fs_early_fragment_tests
);
1697 assert(!state
->fs_inner_coverage
);
1698 assert(!state
->fs_post_depth_coverage
);
1701 for (unsigned i
= 0; i
< MAX_FEEDBACK_BUFFERS
; i
++) {
1702 if (state
->out_qualifier
->out_xfb_stride
[i
]) {
1703 unsigned xfb_stride
;
1704 if (state
->out_qualifier
->out_xfb_stride
[i
]->
1705 process_qualifier_constant(state
, "xfb_stride", &xfb_stride
,
1707 shader
->info
.TransformFeedback
.BufferStride
[i
] = xfb_stride
;
1712 switch (shader
->Stage
) {
1713 case MESA_SHADER_TESS_CTRL
:
1714 shader
->info
.TessCtrl
.VerticesOut
= 0;
1715 if (state
->tcs_output_vertices_specified
) {
1717 if (state
->out_qualifier
->vertices
->
1718 process_qualifier_constant(state
, "vertices", &vertices
,
1721 YYLTYPE loc
= state
->out_qualifier
->vertices
->get_location();
1722 if (vertices
> state
->Const
.MaxPatchVertices
) {
1723 _mesa_glsl_error(&loc
, state
, "vertices (%d) exceeds "
1724 "GL_MAX_PATCH_VERTICES", vertices
);
1726 shader
->info
.TessCtrl
.VerticesOut
= vertices
;
1730 case MESA_SHADER_TESS_EVAL
:
1731 shader
->info
.TessEval
.PrimitiveMode
= PRIM_UNKNOWN
;
1732 if (state
->in_qualifier
->flags
.q
.prim_type
)
1733 shader
->info
.TessEval
.PrimitiveMode
= state
->in_qualifier
->prim_type
;
1735 shader
->info
.TessEval
.Spacing
= TESS_SPACING_UNSPECIFIED
;
1736 if (state
->in_qualifier
->flags
.q
.vertex_spacing
)
1737 shader
->info
.TessEval
.Spacing
= state
->in_qualifier
->vertex_spacing
;
1739 shader
->info
.TessEval
.VertexOrder
= 0;
1740 if (state
->in_qualifier
->flags
.q
.ordering
)
1741 shader
->info
.TessEval
.VertexOrder
= state
->in_qualifier
->ordering
;
1743 shader
->info
.TessEval
.PointMode
= -1;
1744 if (state
->in_qualifier
->flags
.q
.point_mode
)
1745 shader
->info
.TessEval
.PointMode
= state
->in_qualifier
->point_mode
;
1747 case MESA_SHADER_GEOMETRY
:
1748 shader
->info
.Geom
.VerticesOut
= -1;
1749 if (state
->out_qualifier
->flags
.q
.max_vertices
) {
1750 unsigned qual_max_vertices
;
1751 if (state
->out_qualifier
->max_vertices
->
1752 process_qualifier_constant(state
, "max_vertices",
1753 &qual_max_vertices
, true)) {
1755 if (qual_max_vertices
> state
->Const
.MaxGeometryOutputVertices
) {
1756 YYLTYPE loc
= state
->out_qualifier
->max_vertices
->get_location();
1757 _mesa_glsl_error(&loc
, state
,
1758 "maximum output vertices (%d) exceeds "
1759 "GL_MAX_GEOMETRY_OUTPUT_VERTICES",
1762 shader
->info
.Geom
.VerticesOut
= qual_max_vertices
;
1766 if (state
->gs_input_prim_type_specified
) {
1767 shader
->info
.Geom
.InputType
= state
->in_qualifier
->prim_type
;
1769 shader
->info
.Geom
.InputType
= PRIM_UNKNOWN
;
1772 if (state
->out_qualifier
->flags
.q
.prim_type
) {
1773 shader
->info
.Geom
.OutputType
= state
->out_qualifier
->prim_type
;
1775 shader
->info
.Geom
.OutputType
= PRIM_UNKNOWN
;
1778 shader
->info
.Geom
.Invocations
= 0;
1779 if (state
->in_qualifier
->flags
.q
.invocations
) {
1780 unsigned invocations
;
1781 if (state
->in_qualifier
->invocations
->
1782 process_qualifier_constant(state
, "invocations",
1783 &invocations
, false)) {
1785 YYLTYPE loc
= state
->in_qualifier
->invocations
->get_location();
1786 if (invocations
> MAX_GEOMETRY_SHADER_INVOCATIONS
) {
1787 _mesa_glsl_error(&loc
, state
,
1788 "invocations (%d) exceeds "
1789 "GL_MAX_GEOMETRY_SHADER_INVOCATIONS",
1792 shader
->info
.Geom
.Invocations
= invocations
;
1797 case MESA_SHADER_COMPUTE
:
1798 if (state
->cs_input_local_size_specified
) {
1799 for (int i
= 0; i
< 3; i
++)
1800 shader
->info
.Comp
.LocalSize
[i
] = state
->cs_input_local_size
[i
];
1802 for (int i
= 0; i
< 3; i
++)
1803 shader
->info
.Comp
.LocalSize
[i
] = 0;
1806 shader
->info
.Comp
.LocalSizeVariable
=
1807 state
->cs_input_local_size_variable_specified
;
1810 case MESA_SHADER_FRAGMENT
:
1811 shader
->redeclares_gl_fragcoord
= state
->fs_redeclares_gl_fragcoord
;
1812 shader
->uses_gl_fragcoord
= state
->fs_uses_gl_fragcoord
;
1813 shader
->pixel_center_integer
= state
->fs_pixel_center_integer
;
1814 shader
->origin_upper_left
= state
->fs_origin_upper_left
;
1815 shader
->ARB_fragment_coord_conventions_enable
=
1816 state
->ARB_fragment_coord_conventions_enable
;
1817 shader
->EarlyFragmentTests
= state
->fs_early_fragment_tests
;
1818 shader
->info
.InnerCoverage
= state
->fs_inner_coverage
;
1819 shader
->PostDepthCoverage
= state
->fs_post_depth_coverage
;
1820 shader
->BlendSupport
= state
->fs_blend_support
;
1824 /* Nothing to do. */
1832 assign_subroutine_indexes(struct gl_shader
*sh
,
1833 struct _mesa_glsl_parse_state
*state
)
1838 for (j
= 0; j
< state
->num_subroutines
; j
++) {
1839 while (state
->subroutines
[j
]->subroutine_index
== -1) {
1840 for (k
= 0; k
< state
->num_subroutines
; k
++) {
1841 if (state
->subroutines
[k
]->subroutine_index
== index
)
1843 else if (k
== state
->num_subroutines
- 1) {
1844 state
->subroutines
[j
]->subroutine_index
= index
;
1853 add_builtin_defines(struct _mesa_glsl_parse_state
*state
,
1854 void (*add_builtin_define
)(struct glcpp_parser
*, const char *, int),
1855 struct glcpp_parser
*data
,
1859 unsigned gl_version
= state
->ctx
->Extensions
.Version
;
1860 gl_api api
= state
->ctx
->API
;
1862 if (gl_version
!= 0xff) {
1864 for (i
= 0; i
< state
->num_supported_versions
; i
++) {
1865 if (state
->supported_versions
[i
].ver
== version
&&
1866 state
->supported_versions
[i
].es
== es
) {
1867 gl_version
= state
->supported_versions
[i
].gl_ver
;
1872 if (i
== state
->num_supported_versions
)
1877 api
= API_OPENGLES2
;
1879 for (unsigned i
= 0;
1880 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
1881 const _mesa_glsl_extension
*extension
1882 = &_mesa_glsl_supported_extensions
[i
];
1883 if (extension
->compatible_with_state(state
, api
, gl_version
)) {
1884 add_builtin_define(data
, extension
->name
, 1);
1889 /* Implements parsing checks that we can't do during parsing */
1891 do_late_parsing_checks(struct _mesa_glsl_parse_state
*state
)
1893 if (state
->stage
== MESA_SHADER_COMPUTE
&& !state
->has_compute_shader()) {
1895 memset(&loc
, 0, sizeof(loc
));
1896 _mesa_glsl_error(&loc
, state
, "Compute shaders require "
1897 "GLSL 4.30 or GLSL ES 3.10");
1902 _mesa_glsl_compile_shader(struct gl_context
*ctx
, struct gl_shader
*shader
,
1903 bool dump_ast
, bool dump_hir
)
1905 struct _mesa_glsl_parse_state
*state
=
1906 new(shader
) _mesa_glsl_parse_state(ctx
, shader
->Stage
, shader
);
1907 const char *source
= shader
->Source
;
1909 if (ctx
->Const
.GenerateTemporaryNames
)
1910 (void) p_atomic_cmpxchg(&ir_variable::temporaries_allocate_names
,
1913 state
->error
= glcpp_preprocess(state
, &source
, &state
->info_log
,
1914 add_builtin_defines
, state
, ctx
);
1916 if (!state
->error
) {
1917 _mesa_glsl_lexer_ctor(state
, source
);
1918 _mesa_glsl_parse(state
);
1919 _mesa_glsl_lexer_dtor(state
);
1920 do_late_parsing_checks(state
);
1924 foreach_list_typed(ast_node
, ast
, link
, &state
->translation_unit
) {
1930 ralloc_free(shader
->ir
);
1931 shader
->ir
= new(shader
) exec_list
;
1932 if (!state
->error
&& !state
->translation_unit
.is_empty())
1933 _mesa_ast_to_hir(shader
->ir
, state
);
1935 if (!state
->error
) {
1936 validate_ir_tree(shader
->ir
);
1938 /* Print out the unoptimized IR. */
1940 _mesa_print_ir(stdout
, shader
->ir
, state
);
1945 if (!state
->error
&& !shader
->ir
->is_empty()) {
1946 struct gl_shader_compiler_options
*options
=
1947 &ctx
->Const
.ShaderCompilerOptions
[shader
->Stage
];
1949 assign_subroutine_indexes(shader
, state
);
1950 lower_subroutine(shader
->ir
, state
);
1952 /* Do some optimization at compile time to reduce shader IR size
1953 * and reduce later work if the same shader is linked multiple times
1955 if (ctx
->Const
.GLSLOptimizeConservatively
) {
1956 /* Run it just once. */
1957 do_common_optimization(shader
->ir
, false, false, options
,
1958 ctx
->Const
.NativeIntegers
);
1960 /* Repeat it until it stops making changes. */
1961 while (do_common_optimization(shader
->ir
, false, false, options
,
1962 ctx
->Const
.NativeIntegers
))
1966 validate_ir_tree(shader
->ir
);
1968 enum ir_variable_mode other
;
1969 switch (shader
->Stage
) {
1970 case MESA_SHADER_VERTEX
:
1971 other
= ir_var_shader_in
;
1973 case MESA_SHADER_FRAGMENT
:
1974 other
= ir_var_shader_out
;
1977 /* Something invalid to ensure optimize_dead_builtin_uniforms
1978 * doesn't remove anything other than uniforms or constants.
1980 other
= ir_var_mode_count
;
1984 optimize_dead_builtin_variables(shader
->ir
, other
);
1986 validate_ir_tree(shader
->ir
);
1989 if (shader
->InfoLog
)
1990 ralloc_free(shader
->InfoLog
);
1993 set_shader_inout_layout(shader
, state
);
1995 shader
->symbols
= new(shader
->ir
) glsl_symbol_table
;
1996 shader
->CompileStatus
= !state
->error
;
1997 shader
->InfoLog
= state
->info_log
;
1998 shader
->Version
= state
->language_version
;
1999 shader
->IsES
= state
->es_shader
;
2001 /* Retain any live IR, but trash the rest. */
2002 reparent_ir(shader
->ir
, shader
->ir
);
2004 /* Destroy the symbol table. Create a new symbol table that contains only
2005 * the variables and functions that still exist in the IR. The symbol
2006 * table will be used later during linking.
2008 * There must NOT be any freed objects still referenced by the symbol
2009 * table. That could cause the linker to dereference freed memory.
2011 * We don't have to worry about types or interface-types here because those
2012 * are fly-weights that are looked up by glsl_type.
2014 foreach_in_list (ir_instruction
, ir
, shader
->ir
) {
2015 switch (ir
->ir_type
) {
2016 case ir_type_function
:
2017 shader
->symbols
->add_function((ir_function
*) ir
);
2019 case ir_type_variable
: {
2020 ir_variable
*const var
= (ir_variable
*) ir
;
2022 if (var
->data
.mode
!= ir_var_temporary
)
2023 shader
->symbols
->add_variable(var
);
2031 _mesa_glsl_initialize_derived_variables(ctx
, shader
);
2033 delete state
->symbols
;
2039 * Do the set of common optimizations passes
2041 * \param ir List of instructions to be optimized
2042 * \param linked Is the shader linked? This enables
2043 * optimizations passes that remove code at
2044 * global scope and could cause linking to
2046 * \param uniform_locations_assigned Have locations already been assigned for
2047 * uniforms? This prevents the declarations
2048 * of unused uniforms from being removed.
2049 * The setting of this flag only matters if
2050 * \c linked is \c true.
2051 * \param options The driver's preferred shader options.
2052 * \param native_integers Selects optimizations that depend on the
2053 * implementations supporting integers
2054 * natively (as opposed to supporting
2055 * integers in floating point registers).
2058 do_common_optimization(exec_list
*ir
, bool linked
,
2059 bool uniform_locations_assigned
,
2060 const struct gl_shader_compiler_options
*options
,
2061 bool native_integers
)
2063 const bool debug
= false;
2064 GLboolean progress
= GL_FALSE
;
2066 #define OPT(PASS, ...) do { \
2068 fprintf(stderr, "START GLSL optimization %s\n", #PASS); \
2069 const bool opt_progress = PASS(__VA_ARGS__); \
2070 progress = opt_progress || progress; \
2072 _mesa_print_ir(stderr, ir, NULL); \
2073 fprintf(stderr, "GLSL optimization %s: %s progress\n", \
2074 #PASS, opt_progress ? "made" : "no"); \
2076 progress = PASS(__VA_ARGS__) || progress; \
2080 OPT(lower_instructions
, ir
, SUB_TO_ADD_NEG
);
2083 OPT(do_function_inlining
, ir
);
2084 OPT(do_dead_functions
, ir
);
2085 OPT(do_structure_splitting
, ir
);
2087 propagate_invariance(ir
);
2088 OPT(do_if_simplification
, ir
);
2089 OPT(opt_flatten_nested_if_blocks
, ir
);
2090 OPT(opt_conditional_discard
, ir
);
2091 OPT(do_copy_propagation
, ir
);
2092 OPT(do_copy_propagation_elements
, ir
);
2094 if (options
->OptimizeForAOS
&& !linked
)
2095 OPT(opt_flip_matrices
, ir
);
2097 if (linked
&& options
->OptimizeForAOS
) {
2098 OPT(do_vectorize
, ir
);
2102 OPT(do_dead_code
, ir
, uniform_locations_assigned
);
2104 OPT(do_dead_code_unlinked
, ir
);
2105 OPT(do_dead_code_local
, ir
);
2106 OPT(do_tree_grafting
, ir
);
2107 OPT(do_constant_propagation
, ir
);
2109 OPT(do_constant_variable
, ir
);
2111 OPT(do_constant_variable_unlinked
, ir
);
2112 OPT(do_constant_folding
, ir
);
2113 OPT(do_minmax_prune
, ir
);
2114 OPT(do_rebalance_tree
, ir
);
2115 OPT(do_algebraic
, ir
, native_integers
, options
);
2116 OPT(do_lower_jumps
, ir
, true, true, options
->EmitNoMainReturn
,
2117 options
->EmitNoCont
, options
->EmitNoLoops
);
2118 OPT(do_vec_index_to_swizzle
, ir
);
2119 OPT(lower_vector_insert
, ir
, false);
2120 OPT(do_swizzle_swizzle
, ir
);
2121 OPT(do_noop_swizzle
, ir
);
2123 OPT(optimize_split_arrays
, ir
, linked
);
2124 OPT(optimize_redundant_jumps
, ir
);
2126 if (options
->MaxUnrollIterations
) {
2127 loop_state
*ls
= analyze_loop_variables(ir
);
2128 if (ls
->loop_found
) {
2129 OPT(set_loop_controls
, ir
, ls
);
2130 OPT(unroll_loops
, ir
, ls
, options
);
2143 * To be called at GL teardown time, this frees compiler datastructures.
2145 * After calling this, any previously compiled shaders and shader
2146 * programs would be invalid. So this should happen at approximately
2150 _mesa_destroy_shader_compiler(void)
2152 _mesa_destroy_shader_compiler_caches();
2154 _mesa_glsl_release_types();
2158 * Releases compiler caches to trade off performance for memory.
2160 * Intended to be used with glReleaseShaderCompiler().
2163 _mesa_destroy_shader_compiler_caches(void)
2165 _mesa_glsl_release_builtin_functions();