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/shaderobj.h"
32 #include "util/u_atomic.h" /* for p_atomic_cmpxchg */
33 #include "util/ralloc.h"
35 #include "glsl_parser_extras.h"
36 #include "glsl_parser.h"
37 #include "ir_optimization.h"
38 #include "loop_analysis.h"
41 * Format a short human-readable description of the given GLSL version.
44 glsl_compute_version_string(void *mem_ctx
, bool is_es
, unsigned version
)
46 return ralloc_asprintf(mem_ctx
, "GLSL%s %d.%02d", is_es
? " ES" : "",
47 version
/ 100, version
% 100);
51 static const unsigned known_desktop_glsl_versions
[] =
52 { 110, 120, 130, 140, 150, 330, 400, 410, 420, 430, 440, 450 };
53 static const unsigned known_desktop_gl_versions
[] =
54 { 20, 21, 30, 31, 32, 33, 40, 41, 42, 43, 44, 45 };
57 _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context
*_ctx
,
58 gl_shader_stage stage
,
60 : ctx(_ctx
), cs_input_local_size_specified(false), cs_input_local_size(),
63 assert(stage
< MESA_SHADER_STAGES
);
67 this->translation_unit
.make_empty();
68 this->symbols
= new(mem_ctx
) glsl_symbol_table
;
70 this->info_log
= ralloc_strdup(mem_ctx
, "");
72 this->loop_nesting_ast
= NULL
;
74 this->uses_builtin_functions
= false;
76 /* Set default language version and extensions */
77 this->language_version
= 110;
78 this->forced_language_version
= ctx
->Const
.ForceGLSLVersion
;
79 this->zero_init
= ctx
->Const
.GLSLZeroInit
;
80 this->gl_version
= 20;
81 this->es_shader
= false;
82 this->ARB_texture_rectangle_enable
= true;
84 /* OpenGL ES 2.0 has different defaults from desktop GL. */
85 if (ctx
->API
== API_OPENGLES2
) {
86 this->language_version
= 100;
87 this->es_shader
= true;
88 this->ARB_texture_rectangle_enable
= false;
91 this->extensions
= &ctx
->Extensions
;
93 this->Const
.MaxLights
= ctx
->Const
.MaxLights
;
94 this->Const
.MaxClipPlanes
= ctx
->Const
.MaxClipPlanes
;
95 this->Const
.MaxTextureUnits
= ctx
->Const
.MaxTextureUnits
;
96 this->Const
.MaxTextureCoords
= ctx
->Const
.MaxTextureCoordUnits
;
97 this->Const
.MaxVertexAttribs
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
;
98 this->Const
.MaxVertexUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxUniformComponents
;
99 this->Const
.MaxVertexTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
;
100 this->Const
.MaxCombinedTextureImageUnits
= ctx
->Const
.MaxCombinedTextureImageUnits
;
101 this->Const
.MaxTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
;
102 this->Const
.MaxFragmentUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxUniformComponents
;
103 this->Const
.MinProgramTexelOffset
= ctx
->Const
.MinProgramTexelOffset
;
104 this->Const
.MaxProgramTexelOffset
= ctx
->Const
.MaxProgramTexelOffset
;
106 this->Const
.MaxDrawBuffers
= ctx
->Const
.MaxDrawBuffers
;
108 this->Const
.MaxDualSourceDrawBuffers
= ctx
->Const
.MaxDualSourceDrawBuffers
;
111 this->Const
.MaxVertexOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
;
112 this->Const
.MaxGeometryInputComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
;
113 this->Const
.MaxGeometryOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
;
114 this->Const
.MaxFragmentInputComponents
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
;
115 this->Const
.MaxGeometryTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
;
116 this->Const
.MaxGeometryOutputVertices
= ctx
->Const
.MaxGeometryOutputVertices
;
117 this->Const
.MaxGeometryTotalOutputComponents
= ctx
->Const
.MaxGeometryTotalOutputComponents
;
118 this->Const
.MaxGeometryUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxUniformComponents
;
120 this->Const
.MaxVertexAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicCounters
;
121 this->Const
.MaxTessControlAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicCounters
;
122 this->Const
.MaxTessEvaluationAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicCounters
;
123 this->Const
.MaxGeometryAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
;
124 this->Const
.MaxFragmentAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
;
125 this->Const
.MaxComputeAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicCounters
;
126 this->Const
.MaxCombinedAtomicCounters
= ctx
->Const
.MaxCombinedAtomicCounters
;
127 this->Const
.MaxAtomicBufferBindings
= ctx
->Const
.MaxAtomicBufferBindings
;
128 this->Const
.MaxVertexAtomicCounterBuffers
=
129 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
;
130 this->Const
.MaxTessControlAtomicCounterBuffers
=
131 ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicBuffers
;
132 this->Const
.MaxTessEvaluationAtomicCounterBuffers
=
133 ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicBuffers
;
134 this->Const
.MaxGeometryAtomicCounterBuffers
=
135 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
;
136 this->Const
.MaxFragmentAtomicCounterBuffers
=
137 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
;
138 this->Const
.MaxComputeAtomicCounterBuffers
=
139 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicBuffers
;
140 this->Const
.MaxCombinedAtomicCounterBuffers
=
141 ctx
->Const
.MaxCombinedAtomicBuffers
;
142 this->Const
.MaxAtomicCounterBufferSize
=
143 ctx
->Const
.MaxAtomicBufferSize
;
145 /* ARB_enhanced_layouts constants */
146 this->Const
.MaxTransformFeedbackBuffers
= ctx
->Const
.MaxTransformFeedbackBuffers
;
147 this->Const
.MaxTransformFeedbackInterleavedComponents
= ctx
->Const
.MaxTransformFeedbackInterleavedComponents
;
149 /* Compute shader constants */
150 for (unsigned i
= 0; i
< ARRAY_SIZE(this->Const
.MaxComputeWorkGroupCount
); i
++)
151 this->Const
.MaxComputeWorkGroupCount
[i
] = ctx
->Const
.MaxComputeWorkGroupCount
[i
];
152 for (unsigned i
= 0; i
< ARRAY_SIZE(this->Const
.MaxComputeWorkGroupSize
); i
++)
153 this->Const
.MaxComputeWorkGroupSize
[i
] = ctx
->Const
.MaxComputeWorkGroupSize
[i
];
155 this->Const
.MaxComputeTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
;
156 this->Const
.MaxComputeUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxUniformComponents
;
158 this->Const
.MaxImageUnits
= ctx
->Const
.MaxImageUnits
;
159 this->Const
.MaxCombinedShaderOutputResources
= ctx
->Const
.MaxCombinedShaderOutputResources
;
160 this->Const
.MaxImageSamples
= ctx
->Const
.MaxImageSamples
;
161 this->Const
.MaxVertexImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxImageUniforms
;
162 this->Const
.MaxTessControlImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxImageUniforms
;
163 this->Const
.MaxTessEvaluationImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxImageUniforms
;
164 this->Const
.MaxGeometryImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxImageUniforms
;
165 this->Const
.MaxFragmentImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxImageUniforms
;
166 this->Const
.MaxComputeImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxImageUniforms
;
167 this->Const
.MaxCombinedImageUniforms
= ctx
->Const
.MaxCombinedImageUniforms
;
169 /* ARB_viewport_array */
170 this->Const
.MaxViewports
= ctx
->Const
.MaxViewports
;
172 /* tessellation shader constants */
173 this->Const
.MaxPatchVertices
= ctx
->Const
.MaxPatchVertices
;
174 this->Const
.MaxTessGenLevel
= ctx
->Const
.MaxTessGenLevel
;
175 this->Const
.MaxTessControlInputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxInputComponents
;
176 this->Const
.MaxTessControlOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxOutputComponents
;
177 this->Const
.MaxTessControlTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxTextureImageUnits
;
178 this->Const
.MaxTessEvaluationInputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxInputComponents
;
179 this->Const
.MaxTessEvaluationOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxOutputComponents
;
180 this->Const
.MaxTessEvaluationTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxTextureImageUnits
;
181 this->Const
.MaxTessPatchComponents
= ctx
->Const
.MaxTessPatchComponents
;
182 this->Const
.MaxTessControlTotalOutputComponents
= ctx
->Const
.MaxTessControlTotalOutputComponents
;
183 this->Const
.MaxTessControlUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxUniformComponents
;
184 this->Const
.MaxTessEvaluationUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxUniformComponents
;
186 /* GL 4.5 / OES_sample_variables */
187 this->Const
.MaxSamples
= ctx
->Const
.MaxSamples
;
189 this->current_function
= NULL
;
190 this->toplevel_ir
= NULL
;
191 this->found_return
= false;
192 this->all_invariant
= false;
193 this->user_structures
= NULL
;
194 this->num_user_structures
= 0;
195 this->num_subroutines
= 0;
196 this->subroutines
= NULL
;
197 this->num_subroutine_types
= 0;
198 this->subroutine_types
= NULL
;
200 /* supported_versions should be large enough to support the known desktop
201 * GLSL versions plus 4 GLES versions (ES 1.00, ES 3.00, ES 3.10, ES 3.20)
203 STATIC_ASSERT((ARRAY_SIZE(known_desktop_glsl_versions
) + 4) ==
204 ARRAY_SIZE(this->supported_versions
));
206 /* Populate the list of supported GLSL versions */
207 /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or
208 * the OpenGL 3.2 Core context is supported, this logic will need
209 * change. Older versions of GLSL are no longer supported
210 * outside the compatibility contexts of 3.x.
212 this->num_supported_versions
= 0;
213 if (_mesa_is_desktop_gl(ctx
)) {
214 for (unsigned i
= 0; i
< ARRAY_SIZE(known_desktop_glsl_versions
); i
++) {
215 if (known_desktop_glsl_versions
[i
] <= ctx
->Const
.GLSLVersion
) {
216 this->supported_versions
[this->num_supported_versions
].ver
217 = known_desktop_glsl_versions
[i
];
218 this->supported_versions
[this->num_supported_versions
].gl_ver
219 = known_desktop_gl_versions
[i
];
220 this->supported_versions
[this->num_supported_versions
].es
= false;
221 this->num_supported_versions
++;
225 if (ctx
->API
== API_OPENGLES2
|| ctx
->Extensions
.ARB_ES2_compatibility
) {
226 this->supported_versions
[this->num_supported_versions
].ver
= 100;
227 this->supported_versions
[this->num_supported_versions
].gl_ver
= 20;
228 this->supported_versions
[this->num_supported_versions
].es
= true;
229 this->num_supported_versions
++;
231 if (_mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_ES3_compatibility
) {
232 this->supported_versions
[this->num_supported_versions
].ver
= 300;
233 this->supported_versions
[this->num_supported_versions
].gl_ver
= 30;
234 this->supported_versions
[this->num_supported_versions
].es
= true;
235 this->num_supported_versions
++;
237 if (_mesa_is_gles31(ctx
) || ctx
->Extensions
.ARB_ES3_1_compatibility
) {
238 this->supported_versions
[this->num_supported_versions
].ver
= 310;
239 this->supported_versions
[this->num_supported_versions
].gl_ver
= 31;
240 this->supported_versions
[this->num_supported_versions
].es
= true;
241 this->num_supported_versions
++;
243 if ((ctx
->API
== API_OPENGLES2
&& ctx
->Version
>= 32) ||
244 ctx
->Extensions
.ARB_ES3_2_compatibility
) {
245 this->supported_versions
[this->num_supported_versions
].ver
= 320;
246 this->supported_versions
[this->num_supported_versions
].gl_ver
= 32;
247 this->supported_versions
[this->num_supported_versions
].es
= true;
248 this->num_supported_versions
++;
251 /* Create a string for use in error messages to tell the user which GLSL
252 * versions are supported.
254 char *supported
= ralloc_strdup(this, "");
255 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
256 unsigned ver
= this->supported_versions
[i
].ver
;
257 const char *const prefix
= (i
== 0)
259 : ((i
== this->num_supported_versions
- 1) ? ", and " : ", ");
260 const char *const suffix
= (this->supported_versions
[i
].es
) ? " ES" : "";
262 ralloc_asprintf_append(& supported
, "%s%u.%02u%s",
264 ver
/ 100, ver
% 100,
268 this->supported_version_string
= supported
;
270 if (ctx
->Const
.ForceGLSLExtensionsWarn
)
271 _mesa_glsl_process_extension("all", NULL
, "warn", NULL
, this);
273 this->default_uniform_qualifier
= new(this) ast_type_qualifier();
274 this->default_uniform_qualifier
->flags
.q
.shared
= 1;
275 this->default_uniform_qualifier
->flags
.q
.column_major
= 1;
276 this->default_uniform_qualifier
->is_default_qualifier
= true;
278 this->default_shader_storage_qualifier
= new(this) ast_type_qualifier();
279 this->default_shader_storage_qualifier
->flags
.q
.shared
= 1;
280 this->default_shader_storage_qualifier
->flags
.q
.column_major
= 1;
281 this->default_shader_storage_qualifier
->is_default_qualifier
= true;
283 this->fs_uses_gl_fragcoord
= false;
284 this->fs_redeclares_gl_fragcoord
= false;
285 this->fs_origin_upper_left
= false;
286 this->fs_pixel_center_integer
= false;
287 this->fs_redeclares_gl_fragcoord_with_no_layout_qualifiers
= false;
289 this->gs_input_prim_type_specified
= false;
290 this->tcs_output_vertices_specified
= false;
291 this->gs_input_size
= 0;
292 this->in_qualifier
= new(this) ast_type_qualifier();
293 this->out_qualifier
= new(this) ast_type_qualifier();
294 this->fs_early_fragment_tests
= false;
295 this->fs_blend_support
= 0;
296 memset(this->atomic_counter_offsets
, 0,
297 sizeof(this->atomic_counter_offsets
));
298 this->allow_extension_directive_midshader
=
299 ctx
->Const
.AllowGLSLExtensionDirectiveMidShader
;
303 * Determine whether the current GLSL version is sufficiently high to support
304 * a certain feature, and generate an error message if it isn't.
306 * \param required_glsl_version and \c required_glsl_es_version are
307 * interpreted as they are in _mesa_glsl_parse_state::is_version().
309 * \param locp is the parser location where the error should be reported.
311 * \param fmt (and additional arguments) constitute a printf-style error
312 * message to report if the version check fails. Information about the
313 * current and required GLSL versions will be appended. So, for example, if
314 * the GLSL version being compiled is 1.20, and check_version(130, 300, locp,
315 * "foo unsupported") is called, the error message will be "foo unsupported in
316 * GLSL 1.20 (GLSL 1.30 or GLSL 3.00 ES required)".
319 _mesa_glsl_parse_state::check_version(unsigned required_glsl_version
,
320 unsigned required_glsl_es_version
,
321 YYLTYPE
*locp
, const char *fmt
, ...)
323 if (this->is_version(required_glsl_version
, required_glsl_es_version
))
328 char *problem
= ralloc_vasprintf(this, fmt
, args
);
330 const char *glsl_version_string
331 = glsl_compute_version_string(this, false, required_glsl_version
);
332 const char *glsl_es_version_string
333 = glsl_compute_version_string(this, true, required_glsl_es_version
);
334 const char *requirement_string
= "";
335 if (required_glsl_version
&& required_glsl_es_version
) {
336 requirement_string
= ralloc_asprintf(this, " (%s or %s required)",
338 glsl_es_version_string
);
339 } else if (required_glsl_version
) {
340 requirement_string
= ralloc_asprintf(this, " (%s required)",
341 glsl_version_string
);
342 } else if (required_glsl_es_version
) {
343 requirement_string
= ralloc_asprintf(this, " (%s required)",
344 glsl_es_version_string
);
346 _mesa_glsl_error(locp
, this, "%s in %s%s",
347 problem
, this->get_version_string(),
354 * Process a GLSL #version directive.
356 * \param version is the integer that follows the #version token.
358 * \param ident is a string identifier that follows the integer, if any is
359 * present. Otherwise NULL.
362 _mesa_glsl_parse_state::process_version_directive(YYLTYPE
*locp
, int version
,
365 bool es_token_present
= false;
367 if (strcmp(ident
, "es") == 0) {
368 es_token_present
= true;
369 } else if (version
>= 150) {
370 if (strcmp(ident
, "core") == 0) {
371 /* Accept the token. There's no need to record that this is
372 * a core profile shader since that's the only profile we support.
374 } else if (strcmp(ident
, "compatibility") == 0) {
375 _mesa_glsl_error(locp
, this,
376 "the compatibility profile is not supported");
378 _mesa_glsl_error(locp
, this,
379 "\"%s\" is not a valid shading language profile; "
380 "if present, it must be \"core\"", ident
);
383 _mesa_glsl_error(locp
, this,
384 "illegal text following version number");
388 this->es_shader
= es_token_present
;
389 if (version
== 100) {
390 if (es_token_present
) {
391 _mesa_glsl_error(locp
, this,
392 "GLSL 1.00 ES should be selected using "
395 this->es_shader
= true;
399 if (this->es_shader
) {
400 this->ARB_texture_rectangle_enable
= false;
403 if (this->forced_language_version
)
404 this->language_version
= this->forced_language_version
;
406 this->language_version
= version
;
408 bool supported
= false;
409 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
410 if (this->supported_versions
[i
].ver
== this->language_version
411 && this->supported_versions
[i
].es
== this->es_shader
) {
412 this->gl_version
= this->supported_versions
[i
].gl_ver
;
419 _mesa_glsl_error(locp
, this, "%s is not supported. "
420 "Supported versions are: %s",
421 this->get_version_string(),
422 this->supported_version_string
);
424 /* On exit, the language_version must be set to a valid value.
425 * Later calls to _mesa_glsl_initialize_types will misbehave if
426 * the version is invalid.
428 switch (this->ctx
->API
) {
429 case API_OPENGL_COMPAT
:
430 case API_OPENGL_CORE
:
431 this->language_version
= this->ctx
->Const
.GLSLVersion
;
435 assert(!"Should not get here.");
439 this->language_version
= 100;
446 /* This helper function will append the given message to the shader's
447 info log and report it via GL_ARB_debug_output. Per that extension,
448 'type' is one of the enum values classifying the message, and
449 'id' is the implementation-defined ID of the given message. */
451 _mesa_glsl_msg(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
452 GLenum type
, const char *fmt
, va_list ap
)
454 bool error
= (type
== MESA_DEBUG_TYPE_ERROR
);
457 assert(state
->info_log
!= NULL
);
459 /* Get the offset that the new message will be written to. */
460 int msg_offset
= strlen(state
->info_log
);
462 ralloc_asprintf_append(&state
->info_log
, "%u:%u(%u): %s: ",
466 error
? "error" : "warning");
467 ralloc_vasprintf_append(&state
->info_log
, fmt
, ap
);
469 const char *const msg
= &state
->info_log
[msg_offset
];
470 struct gl_context
*ctx
= state
->ctx
;
472 /* Report the error via GL_ARB_debug_output. */
473 _mesa_shader_debug(ctx
, type
, &msg_id
, msg
);
475 ralloc_strcat(&state
->info_log
, "\n");
479 _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
480 const char *fmt
, ...)
487 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_ERROR
, fmt
, ap
);
493 _mesa_glsl_warning(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
494 const char *fmt
, ...)
499 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_OTHER
, fmt
, ap
);
505 * Enum representing the possible behaviors that can be specified in
506 * an #extension directive.
516 * Element type for _mesa_glsl_supported_extensions
518 struct _mesa_glsl_extension
{
520 * Name of the extension when referred to in a GLSL extension
526 * Whether this extension is a part of AEP
531 * Predicate that checks whether the relevant extension is available for
534 bool (*available_pred
)(const struct gl_context
*,
535 gl_api api
, uint8_t version
);
538 * Flag in the _mesa_glsl_parse_state struct that should be set
539 * when this extension is enabled.
541 * See note in _mesa_glsl_extension::supported_flag about "pointer
544 bool _mesa_glsl_parse_state::* enable_flag
;
547 * Flag in the _mesa_glsl_parse_state struct that should be set
548 * when the shader requests "warn" behavior for this extension.
550 * See note in _mesa_glsl_extension::supported_flag about "pointer
553 bool _mesa_glsl_parse_state::* warn_flag
;
556 bool compatible_with_state(const _mesa_glsl_parse_state
*state
,
557 gl_api api
, uint8_t gl_version
) const;
558 void set_flags(_mesa_glsl_parse_state
*state
, ext_behavior behavior
) const;
561 /** Checks if the context supports a user-facing extension */
562 #define EXT(name_str, driver_cap, ...) \
563 static MAYBE_UNUSED bool \
564 has_##name_str(const struct gl_context *ctx, gl_api api, uint8_t version) \
566 return ctx->Extensions.driver_cap && (version >= \
567 _mesa_extension_table[MESA_EXTENSION_##name_str].version[api]); \
569 #include "main/extensions_table.h"
573 { "GL_" #NAME, false, has_##NAME, \
574 &_mesa_glsl_parse_state::NAME##_enable, \
575 &_mesa_glsl_parse_state::NAME##_warn }
577 #define EXT_AEP(NAME) \
578 { "GL_" #NAME, true, has_##NAME, \
579 &_mesa_glsl_parse_state::NAME##_enable, \
580 &_mesa_glsl_parse_state::NAME##_warn }
583 * Table of extensions that can be enabled/disabled within a shader,
584 * and the conditions under which they are supported.
586 static const _mesa_glsl_extension _mesa_glsl_supported_extensions
[] = {
587 /* ARB extensions go here, sorted alphabetically.
589 EXT(ARB_ES3_1_compatibility
),
590 EXT(ARB_ES3_2_compatibility
),
591 EXT(ARB_arrays_of_arrays
),
592 EXT(ARB_compute_shader
),
593 EXT(ARB_conservative_depth
),
594 EXT(ARB_cull_distance
),
595 EXT(ARB_derivative_control
),
596 EXT(ARB_draw_buffers
),
597 EXT(ARB_draw_instanced
),
598 EXT(ARB_enhanced_layouts
),
599 EXT(ARB_explicit_attrib_location
),
600 EXT(ARB_explicit_uniform_location
),
601 EXT(ARB_fragment_coord_conventions
),
602 EXT(ARB_fragment_layer_viewport
),
603 EXT(ARB_gpu_shader5
),
604 EXT(ARB_gpu_shader_fp64
),
605 EXT(ARB_sample_shading
),
606 EXT(ARB_separate_shader_objects
),
607 EXT(ARB_shader_atomic_counter_ops
),
608 EXT(ARB_shader_atomic_counters
),
609 EXT(ARB_shader_bit_encoding
),
610 EXT(ARB_shader_clock
),
611 EXT(ARB_shader_draw_parameters
),
612 EXT(ARB_shader_group_vote
),
613 EXT(ARB_shader_image_load_store
),
614 EXT(ARB_shader_image_size
),
615 EXT(ARB_shader_precision
),
616 EXT(ARB_shader_stencil_export
),
617 EXT(ARB_shader_storage_buffer_object
),
618 EXT(ARB_shader_subroutine
),
619 EXT(ARB_shader_texture_image_samples
),
620 EXT(ARB_shader_texture_lod
),
621 EXT(ARB_shader_viewport_layer_array
),
622 EXT(ARB_shading_language_420pack
),
623 EXT(ARB_shading_language_packing
),
624 EXT(ARB_tessellation_shader
),
625 EXT(ARB_texture_cube_map_array
),
626 EXT(ARB_texture_gather
),
627 EXT(ARB_texture_multisample
),
628 EXT(ARB_texture_query_levels
),
629 EXT(ARB_texture_query_lod
),
630 EXT(ARB_texture_rectangle
),
631 EXT(ARB_uniform_buffer_object
),
632 EXT(ARB_vertex_attrib_64bit
),
633 EXT(ARB_viewport_array
),
635 /* KHR extensions go here, sorted alphabetically.
637 EXT_AEP(KHR_blend_equation_advanced
),
639 /* OES extensions go here, sorted alphabetically.
641 EXT(OES_EGL_image_external
),
642 EXT(OES_geometry_point_size
),
643 EXT(OES_geometry_shader
),
644 EXT(OES_gpu_shader5
),
645 EXT(OES_primitive_bounding_box
),
646 EXT_AEP(OES_sample_variables
),
647 EXT_AEP(OES_shader_image_atomic
),
648 EXT(OES_shader_io_blocks
),
649 EXT_AEP(OES_shader_multisample_interpolation
),
650 EXT(OES_standard_derivatives
),
651 EXT(OES_tessellation_point_size
),
652 EXT(OES_tessellation_shader
),
654 EXT(OES_texture_buffer
),
655 EXT(OES_texture_cube_map_array
),
656 EXT_AEP(OES_texture_storage_multisample_2d_array
),
658 /* All other extensions go here, sorted alphabetically.
660 EXT(AMD_conservative_depth
),
661 EXT(AMD_shader_stencil_export
),
662 EXT(AMD_shader_trinary_minmax
),
663 EXT(AMD_vertex_shader_layer
),
664 EXT(AMD_vertex_shader_viewport_index
),
665 EXT(ANDROID_extension_pack_es31a
),
666 EXT(EXT_blend_func_extended
),
667 EXT(EXT_draw_buffers
),
668 EXT(EXT_clip_cull_distance
),
669 EXT(EXT_geometry_point_size
),
670 EXT_AEP(EXT_geometry_shader
),
671 EXT_AEP(EXT_gpu_shader5
),
672 EXT_AEP(EXT_primitive_bounding_box
),
673 EXT(EXT_separate_shader_objects
),
674 EXT(EXT_shader_framebuffer_fetch
),
675 EXT(EXT_shader_integer_mix
),
676 EXT_AEP(EXT_shader_io_blocks
),
677 EXT(EXT_shader_samples_identical
),
678 EXT(EXT_tessellation_point_size
),
679 EXT_AEP(EXT_tessellation_shader
),
680 EXT(EXT_texture_array
),
681 EXT_AEP(EXT_texture_buffer
),
682 EXT_AEP(EXT_texture_cube_map_array
),
683 EXT(MESA_shader_integer_functions
),
690 * Determine whether a given extension is compatible with the target,
691 * API, and extension information in the current parser state.
693 bool _mesa_glsl_extension::compatible_with_state(
694 const _mesa_glsl_parse_state
*state
, gl_api api
, uint8_t gl_version
) const
696 return this->available_pred(state
->ctx
, api
, gl_version
);
700 * Set the appropriate flags in the parser state to establish the
701 * given behavior for this extension.
703 void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state
*state
,
704 ext_behavior behavior
) const
706 /* Note: the ->* operator indexes into state by the
707 * offsets this->enable_flag and this->warn_flag. See
708 * _mesa_glsl_extension::supported_flag for more info.
710 state
->*(this->enable_flag
) = (behavior
!= extension_disable
);
711 state
->*(this->warn_flag
) = (behavior
== extension_warn
);
715 * Find an extension by name in _mesa_glsl_supported_extensions. If
716 * the name is not found, return NULL.
718 static const _mesa_glsl_extension
*find_extension(const char *name
)
720 for (unsigned i
= 0; i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
721 if (strcmp(name
, _mesa_glsl_supported_extensions
[i
].name
) == 0) {
722 return &_mesa_glsl_supported_extensions
[i
];
729 _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
730 const char *behavior_string
, YYLTYPE
*behavior_locp
,
731 _mesa_glsl_parse_state
*state
)
733 uint8_t gl_version
= state
->ctx
->Extensions
.Version
;
734 gl_api api
= state
->ctx
->API
;
735 ext_behavior behavior
;
736 if (strcmp(behavior_string
, "warn") == 0) {
737 behavior
= extension_warn
;
738 } else if (strcmp(behavior_string
, "require") == 0) {
739 behavior
= extension_require
;
740 } else if (strcmp(behavior_string
, "enable") == 0) {
741 behavior
= extension_enable
;
742 } else if (strcmp(behavior_string
, "disable") == 0) {
743 behavior
= extension_disable
;
745 _mesa_glsl_error(behavior_locp
, state
,
746 "unknown extension behavior `%s'",
751 /* If we're in a desktop context but with an ES shader, use an ES API enum
752 * to verify extension availability.
754 if (state
->es_shader
&& api
!= API_OPENGLES2
)
756 /* Use the language-version derived GL version to extension checks, unless
757 * we're using meta, which sets the version to the max.
759 if (gl_version
!= 0xff)
760 gl_version
= state
->gl_version
;
762 if (strcmp(name
, "all") == 0) {
763 if ((behavior
== extension_enable
) || (behavior
== extension_require
)) {
764 _mesa_glsl_error(name_locp
, state
, "cannot %s all extensions",
765 (behavior
== extension_enable
)
766 ? "enable" : "require");
770 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
771 const _mesa_glsl_extension
*extension
772 = &_mesa_glsl_supported_extensions
[i
];
773 if (extension
->compatible_with_state(state
, api
, gl_version
)) {
774 _mesa_glsl_supported_extensions
[i
].set_flags(state
, behavior
);
779 const _mesa_glsl_extension
*extension
= find_extension(name
);
780 if (extension
&& extension
->compatible_with_state(state
, api
, gl_version
)) {
781 extension
->set_flags(state
, behavior
);
782 if (extension
->available_pred
== has_ANDROID_extension_pack_es31a
) {
784 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
785 const _mesa_glsl_extension
*extension
=
786 &_mesa_glsl_supported_extensions
[i
];
790 /* AEP should not be enabled if all of the sub-extensions can't
791 * also be enabled. This is not the proper layer to do such
792 * error-checking though.
794 assert(extension
->compatible_with_state(state
, api
, gl_version
));
795 extension
->set_flags(state
, behavior
);
799 static const char fmt
[] = "extension `%s' unsupported in %s shader";
801 if (behavior
== extension_require
) {
802 _mesa_glsl_error(name_locp
, state
, fmt
,
803 name
, _mesa_shader_stage_to_string(state
->stage
));
806 _mesa_glsl_warning(name_locp
, state
, fmt
,
807 name
, _mesa_shader_stage_to_string(state
->stage
));
817 * Recurses through <type> and <expr> if <expr> is an aggregate initializer
818 * and sets <expr>'s <constructor_type> field to <type>. Gives later functions
819 * (process_array_constructor, et al) sufficient information to do type
822 * Operates on assignments involving an aggregate initializer. E.g.,
824 * vec4 pos = {1.0, -1.0, 0.0, 1.0};
826 * or more ridiculously,
839 * {1.0, 2.0, 3.0, 4.0}, // a[0].v[0]
840 * {5.0, 6.0, 7.0, 8.0} // a[0].v[1]
845 * {1.0, 2.0, 3.0, 4.0}, // a[1].v[0]
846 * {5.0, 6.0, 7.0, 8.0} // a[1].v[1]
852 * {1.0, 2.0, 3.0, 4.0}, // b.v[0]
853 * {5.0, 6.0, 7.0, 8.0} // b.v[1]
859 * This pass is necessary because the right-hand side of <type> e = { ... }
860 * doesn't contain sufficient information to determine if the types match.
863 _mesa_ast_set_aggregate_type(const glsl_type
*type
,
864 ast_expression
*expr
)
866 ast_aggregate_initializer
*ai
= (ast_aggregate_initializer
*)expr
;
867 ai
->constructor_type
= type
;
869 /* If the aggregate is an array, recursively set its elements' types. */
870 if (type
->is_array()) {
871 /* Each array element has the type type->fields.array.
873 * E.g., if <type> if struct S[2] we want to set each element's type to
876 for (exec_node
*expr_node
= ai
->expressions
.get_head_raw();
877 !expr_node
->is_tail_sentinel();
878 expr_node
= expr_node
->next
) {
879 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
882 if (expr
->oper
== ast_aggregate
)
883 _mesa_ast_set_aggregate_type(type
->fields
.array
, expr
);
886 /* If the aggregate is a struct, recursively set its fields' types. */
887 } else if (type
->is_record()) {
888 exec_node
*expr_node
= ai
->expressions
.get_head_raw();
890 /* Iterate through the struct's fields. */
891 for (unsigned i
= 0; !expr_node
->is_tail_sentinel() && i
< type
->length
;
892 i
++, expr_node
= expr_node
->next
) {
893 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
896 if (expr
->oper
== ast_aggregate
) {
897 _mesa_ast_set_aggregate_type(type
->fields
.structure
[i
].type
, expr
);
900 /* If the aggregate is a matrix, set its columns' types. */
901 } else if (type
->is_matrix()) {
902 for (exec_node
*expr_node
= ai
->expressions
.get_head_raw();
903 !expr_node
->is_tail_sentinel();
904 expr_node
= expr_node
->next
) {
905 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
908 if (expr
->oper
== ast_aggregate
)
909 _mesa_ast_set_aggregate_type(type
->column_type(), expr
);
915 _mesa_ast_process_interface_block(YYLTYPE
*locp
,
916 _mesa_glsl_parse_state
*state
,
917 ast_interface_block
*const block
,
918 const struct ast_type_qualifier
&q
)
920 if (q
.flags
.q
.buffer
) {
921 if (!state
->has_shader_storage_buffer_objects()) {
922 _mesa_glsl_error(locp
, state
,
923 "#version 430 / GL_ARB_shader_storage_buffer_object "
924 "required for defining shader storage blocks");
925 } else if (state
->ARB_shader_storage_buffer_object_warn
) {
926 _mesa_glsl_warning(locp
, state
,
927 "#version 430 / GL_ARB_shader_storage_buffer_object "
928 "required for defining shader storage blocks");
930 } else if (q
.flags
.q
.uniform
) {
931 if (!state
->has_uniform_buffer_objects()) {
932 _mesa_glsl_error(locp
, state
,
933 "#version 140 / GL_ARB_uniform_buffer_object "
934 "required for defining uniform blocks");
935 } else if (state
->ARB_uniform_buffer_object_warn
) {
936 _mesa_glsl_warning(locp
, state
,
937 "#version 140 / GL_ARB_uniform_buffer_object "
938 "required for defining uniform blocks");
941 if (!state
->has_shader_io_blocks()) {
942 if (state
->es_shader
) {
943 _mesa_glsl_error(locp
, state
,
944 "GL_OES_shader_io_blocks or #version 320 "
945 "required for using interface blocks");
947 _mesa_glsl_error(locp
, state
,
948 "#version 150 required for using "
954 /* From the GLSL 1.50.11 spec, section 4.3.7 ("Interface Blocks"):
955 * "It is illegal to have an input block in a vertex shader
956 * or an output block in a fragment shader"
958 if ((state
->stage
== MESA_SHADER_VERTEX
) && q
.flags
.q
.in
) {
959 _mesa_glsl_error(locp
, state
,
960 "`in' interface block is not allowed for "
962 } else if ((state
->stage
== MESA_SHADER_FRAGMENT
) && q
.flags
.q
.out
) {
963 _mesa_glsl_error(locp
, state
,
964 "`out' interface block is not allowed for "
965 "a fragment shader");
968 /* Since block arrays require names, and both features are added in
969 * the same language versions, we don't have to explicitly
970 * version-check both things.
972 if (block
->instance_name
!= NULL
) {
973 state
->check_version(150, 300, locp
, "interface blocks with "
974 "an instance name are not allowed");
977 uint64_t interface_type_mask
;
978 struct ast_type_qualifier temp_type_qualifier
;
980 /* Get a bitmask containing only the in/out/uniform/buffer
981 * flags, allowing us to ignore other irrelevant flags like
982 * interpolation qualifiers.
984 temp_type_qualifier
.flags
.i
= 0;
985 temp_type_qualifier
.flags
.q
.uniform
= true;
986 temp_type_qualifier
.flags
.q
.in
= true;
987 temp_type_qualifier
.flags
.q
.out
= true;
988 temp_type_qualifier
.flags
.q
.buffer
= true;
989 temp_type_qualifier
.flags
.q
.patch
= true;
990 interface_type_mask
= temp_type_qualifier
.flags
.i
;
992 /* Get the block's interface qualifier. The interface_qualifier
993 * production rule guarantees that only one bit will be set (and
994 * it will be in/out/uniform).
996 uint64_t block_interface_qualifier
= q
.flags
.i
;
998 block
->layout
.flags
.i
|= block_interface_qualifier
;
1000 if (state
->stage
== MESA_SHADER_GEOMETRY
&&
1001 state
->has_explicit_attrib_stream() &&
1002 block
->layout
.flags
.q
.out
) {
1003 /* Assign global layout's stream value. */
1004 block
->layout
.flags
.q
.stream
= 1;
1005 block
->layout
.flags
.q
.explicit_stream
= 0;
1006 block
->layout
.stream
= state
->out_qualifier
->stream
;
1009 if (state
->has_enhanced_layouts() && block
->layout
.flags
.q
.out
) {
1010 /* Assign global layout's xfb_buffer value. */
1011 block
->layout
.flags
.q
.xfb_buffer
= 1;
1012 block
->layout
.flags
.q
.explicit_xfb_buffer
= 0;
1013 block
->layout
.xfb_buffer
= state
->out_qualifier
->xfb_buffer
;
1016 foreach_list_typed (ast_declarator_list
, member
, link
, &block
->declarations
) {
1017 ast_type_qualifier
& qualifier
= member
->type
->qualifier
;
1018 if ((qualifier
.flags
.i
& interface_type_mask
) == 0) {
1019 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1020 * "If no optional qualifier is used in a member declaration, the
1021 * qualifier of the variable is just in, out, or uniform as declared
1022 * by interface-qualifier."
1024 qualifier
.flags
.i
|= block_interface_qualifier
;
1025 } else if ((qualifier
.flags
.i
& interface_type_mask
) !=
1026 block_interface_qualifier
) {
1027 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1028 * "If optional qualifiers are used, they can include interpolation
1029 * and storage qualifiers and they must declare an input, output,
1030 * or uniform variable consistent with the interface qualifier of
1033 _mesa_glsl_error(locp
, state
,
1034 "uniform/in/out qualifier on "
1035 "interface block member does not match "
1036 "the interface block");
1039 if (!(q
.flags
.q
.in
|| q
.flags
.q
.out
) && qualifier
.flags
.q
.invariant
)
1040 _mesa_glsl_error(locp
, state
,
1041 "invariant qualifiers can be used only "
1042 "in interface block members for shader "
1043 "inputs or outputs");
1048 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier
*q
)
1050 if (q
->flags
.q
.subroutine
)
1051 printf("subroutine ");
1053 if (q
->flags
.q
.subroutine_def
) {
1054 printf("subroutine (");
1055 q
->subroutine_list
->print();
1059 if (q
->flags
.q
.constant
)
1062 if (q
->flags
.q
.invariant
)
1063 printf("invariant ");
1065 if (q
->flags
.q
.attribute
)
1066 printf("attribute ");
1068 if (q
->flags
.q
.varying
)
1071 if (q
->flags
.q
.in
&& q
->flags
.q
.out
)
1081 if (q
->flags
.q
.centroid
)
1082 printf("centroid ");
1083 if (q
->flags
.q
.sample
)
1085 if (q
->flags
.q
.patch
)
1087 if (q
->flags
.q
.uniform
)
1089 if (q
->flags
.q
.buffer
)
1091 if (q
->flags
.q
.smooth
)
1093 if (q
->flags
.q
.flat
)
1095 if (q
->flags
.q
.noperspective
)
1096 printf("noperspective ");
1101 ast_node::print(void) const
1103 printf("unhandled node ");
1107 ast_node::ast_node(void)
1109 this->location
.source
= 0;
1110 this->location
.first_line
= 0;
1111 this->location
.first_column
= 0;
1112 this->location
.last_line
= 0;
1113 this->location
.last_column
= 0;
1118 ast_opt_array_dimensions_print(const ast_array_specifier
*array_specifier
)
1120 if (array_specifier
)
1121 array_specifier
->print();
1126 ast_compound_statement::print(void) const
1130 foreach_list_typed(ast_node
, ast
, link
, &this->statements
) {
1138 ast_compound_statement::ast_compound_statement(int new_scope
,
1139 ast_node
*statements
)
1141 this->new_scope
= new_scope
;
1143 if (statements
!= NULL
) {
1144 this->statements
.push_degenerate_list_at_head(&statements
->link
);
1150 ast_expression::print(void) const
1154 case ast_mul_assign
:
1155 case ast_div_assign
:
1156 case ast_mod_assign
:
1157 case ast_add_assign
:
1158 case ast_sub_assign
:
1161 case ast_and_assign
:
1162 case ast_xor_assign
:
1164 subexpressions
[0]->print();
1165 printf("%s ", operator_string(oper
));
1166 subexpressions
[1]->print();
1169 case ast_field_selection
:
1170 subexpressions
[0]->print();
1171 printf(". %s ", primary_expression
.identifier
);
1180 printf("%s ", operator_string(oper
));
1181 subexpressions
[0]->print();
1186 subexpressions
[0]->print();
1187 printf("%s ", operator_string(oper
));
1190 case ast_conditional
:
1191 subexpressions
[0]->print();
1193 subexpressions
[1]->print();
1195 subexpressions
[2]->print();
1198 case ast_array_index
:
1199 subexpressions
[0]->print();
1201 subexpressions
[1]->print();
1205 case ast_function_call
: {
1206 subexpressions
[0]->print();
1209 foreach_list_typed (ast_node
, ast
, link
, &this->expressions
) {
1210 if (&ast
->link
!= this->expressions
.get_head())
1220 case ast_identifier
:
1221 printf("%s ", primary_expression
.identifier
);
1224 case ast_int_constant
:
1225 printf("%d ", primary_expression
.int_constant
);
1228 case ast_uint_constant
:
1229 printf("%u ", primary_expression
.uint_constant
);
1232 case ast_float_constant
:
1233 printf("%f ", primary_expression
.float_constant
);
1236 case ast_double_constant
:
1237 printf("%f ", primary_expression
.double_constant
);
1240 case ast_bool_constant
:
1242 primary_expression
.bool_constant
1243 ? "true" : "false");
1246 case ast_sequence
: {
1248 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1249 if (&ast
->link
!= this->expressions
.get_head())
1258 case ast_aggregate
: {
1260 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1261 if (&ast
->link
!= this->expressions
.get_head())
1276 ast_expression::ast_expression(int oper
,
1277 ast_expression
*ex0
,
1278 ast_expression
*ex1
,
1279 ast_expression
*ex2
) :
1280 primary_expression()
1282 this->oper
= ast_operators(oper
);
1283 this->subexpressions
[0] = ex0
;
1284 this->subexpressions
[1] = ex1
;
1285 this->subexpressions
[2] = ex2
;
1286 this->non_lvalue_description
= NULL
;
1287 this->is_lhs
= false;
1292 ast_expression_statement::print(void) const
1295 expression
->print();
1301 ast_expression_statement::ast_expression_statement(ast_expression
*ex
) :
1309 ast_function::print(void) const
1311 return_type
->print();
1312 printf(" %s (", identifier
);
1314 foreach_list_typed(ast_node
, ast
, link
, & this->parameters
) {
1322 ast_function::ast_function(void)
1323 : return_type(NULL
), identifier(NULL
), is_definition(false),
1331 ast_fully_specified_type::print(void) const
1333 _mesa_ast_type_qualifier_print(& qualifier
);
1339 ast_parameter_declarator::print(void) const
1343 printf("%s ", identifier
);
1344 ast_opt_array_dimensions_print(array_specifier
);
1349 ast_function_definition::print(void) const
1357 ast_declaration::print(void) const
1359 printf("%s ", identifier
);
1360 ast_opt_array_dimensions_print(array_specifier
);
1364 initializer
->print();
1369 ast_declaration::ast_declaration(const char *identifier
,
1370 ast_array_specifier
*array_specifier
,
1371 ast_expression
*initializer
)
1373 this->identifier
= identifier
;
1374 this->array_specifier
= array_specifier
;
1375 this->initializer
= initializer
;
1380 ast_declarator_list::print(void) const
1382 assert(type
|| invariant
);
1387 printf("invariant ");
1391 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1392 if (&ast
->link
!= this->declarations
.get_head())
1402 ast_declarator_list::ast_declarator_list(ast_fully_specified_type
*type
)
1405 this->invariant
= false;
1406 this->precise
= false;
1410 ast_jump_statement::print(void) const
1414 printf("continue; ");
1421 if (opt_return_value
)
1422 opt_return_value
->print();
1427 printf("discard; ");
1433 ast_jump_statement::ast_jump_statement(int mode
, ast_expression
*return_value
)
1434 : opt_return_value(NULL
)
1436 this->mode
= ast_jump_modes(mode
);
1438 if (mode
== ast_return
)
1439 opt_return_value
= return_value
;
1444 ast_selection_statement::print(void) const
1450 then_statement
->print();
1452 if (else_statement
) {
1454 else_statement
->print();
1459 ast_selection_statement::ast_selection_statement(ast_expression
*condition
,
1460 ast_node
*then_statement
,
1461 ast_node
*else_statement
)
1463 this->condition
= condition
;
1464 this->then_statement
= then_statement
;
1465 this->else_statement
= else_statement
;
1470 ast_switch_statement::print(void) const
1472 printf("switch ( ");
1473 test_expression
->print();
1480 ast_switch_statement::ast_switch_statement(ast_expression
*test_expression
,
1483 this->test_expression
= test_expression
;
1489 ast_switch_body::print(void) const
1492 if (stmts
!= NULL
) {
1499 ast_switch_body::ast_switch_body(ast_case_statement_list
*stmts
)
1501 this->stmts
= stmts
;
1505 void ast_case_label::print(void) const
1507 if (test_value
!= NULL
) {
1509 test_value
->print();
1512 printf("default: ");
1517 ast_case_label::ast_case_label(ast_expression
*test_value
)
1519 this->test_value
= test_value
;
1523 void ast_case_label_list::print(void) const
1525 foreach_list_typed(ast_node
, ast
, link
, & this->labels
) {
1532 ast_case_label_list::ast_case_label_list(void)
1537 void ast_case_statement::print(void) const
1540 foreach_list_typed(ast_node
, ast
, link
, & this->stmts
) {
1547 ast_case_statement::ast_case_statement(ast_case_label_list
*labels
)
1549 this->labels
= labels
;
1553 void ast_case_statement_list::print(void) const
1555 foreach_list_typed(ast_node
, ast
, link
, & this->cases
) {
1561 ast_case_statement_list::ast_case_statement_list(void)
1567 ast_iteration_statement::print(void) const
1573 init_statement
->print();
1580 if (rest_expression
)
1581 rest_expression
->print();
1607 ast_iteration_statement::ast_iteration_statement(int mode
,
1609 ast_node
*condition
,
1610 ast_expression
*rest_expression
,
1613 this->mode
= ast_iteration_modes(mode
);
1614 this->init_statement
= init
;
1615 this->condition
= condition
;
1616 this->rest_expression
= rest_expression
;
1622 ast_struct_specifier::print(void) const
1624 printf("struct %s { ", name
);
1625 foreach_list_typed(ast_node
, ast
, link
, &this->declarations
) {
1632 ast_struct_specifier::ast_struct_specifier(const char *identifier
,
1633 ast_declarator_list
*declarator_list
)
1635 if (identifier
== NULL
) {
1636 static mtx_t mutex
= _MTX_INITIALIZER_NP
;
1637 static unsigned anon_count
= 1;
1641 count
= anon_count
++;
1644 identifier
= ralloc_asprintf(this, "#anon_struct_%04x", count
);
1647 this->declarations
.push_degenerate_list_at_head(&declarator_list
->link
);
1648 is_declaration
= true;
1652 void ast_subroutine_list::print(void) const
1654 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1655 if (&ast
->link
!= this->declarations
.get_head())
1662 set_shader_inout_layout(struct gl_shader
*shader
,
1663 struct _mesa_glsl_parse_state
*state
)
1665 /* Should have been prevented by the parser. */
1666 if (shader
->Stage
== MESA_SHADER_TESS_CTRL
||
1667 shader
->Stage
== MESA_SHADER_VERTEX
) {
1668 assert(!state
->in_qualifier
->flags
.i
);
1669 } else if (shader
->Stage
!= MESA_SHADER_GEOMETRY
&&
1670 shader
->Stage
!= MESA_SHADER_TESS_EVAL
) {
1671 assert(!state
->in_qualifier
->flags
.i
);
1674 if (shader
->Stage
!= MESA_SHADER_COMPUTE
) {
1675 /* Should have been prevented by the parser. */
1676 assert(!state
->cs_input_local_size_specified
);
1679 if (shader
->Stage
!= MESA_SHADER_FRAGMENT
) {
1680 /* Should have been prevented by the parser. */
1681 assert(!state
->fs_uses_gl_fragcoord
);
1682 assert(!state
->fs_redeclares_gl_fragcoord
);
1683 assert(!state
->fs_pixel_center_integer
);
1684 assert(!state
->fs_origin_upper_left
);
1685 assert(!state
->fs_early_fragment_tests
);
1688 for (unsigned i
= 0; i
< MAX_FEEDBACK_BUFFERS
; i
++) {
1689 if (state
->out_qualifier
->out_xfb_stride
[i
]) {
1690 unsigned xfb_stride
;
1691 if (state
->out_qualifier
->out_xfb_stride
[i
]->
1692 process_qualifier_constant(state
, "xfb_stride", &xfb_stride
,
1694 shader
->info
.TransformFeedback
.BufferStride
[i
] = xfb_stride
;
1699 switch (shader
->Stage
) {
1700 case MESA_SHADER_TESS_CTRL
:
1701 shader
->info
.TessCtrl
.VerticesOut
= 0;
1702 if (state
->tcs_output_vertices_specified
) {
1704 if (state
->out_qualifier
->vertices
->
1705 process_qualifier_constant(state
, "vertices", &vertices
,
1708 YYLTYPE loc
= state
->out_qualifier
->vertices
->get_location();
1709 if (vertices
> state
->Const
.MaxPatchVertices
) {
1710 _mesa_glsl_error(&loc
, state
, "vertices (%d) exceeds "
1711 "GL_MAX_PATCH_VERTICES", vertices
);
1713 shader
->info
.TessCtrl
.VerticesOut
= vertices
;
1717 case MESA_SHADER_TESS_EVAL
:
1718 shader
->info
.TessEval
.PrimitiveMode
= PRIM_UNKNOWN
;
1719 if (state
->in_qualifier
->flags
.q
.prim_type
)
1720 shader
->info
.TessEval
.PrimitiveMode
= state
->in_qualifier
->prim_type
;
1722 shader
->info
.TessEval
.Spacing
= 0;
1723 if (state
->in_qualifier
->flags
.q
.vertex_spacing
)
1724 shader
->info
.TessEval
.Spacing
= state
->in_qualifier
->vertex_spacing
;
1726 shader
->info
.TessEval
.VertexOrder
= 0;
1727 if (state
->in_qualifier
->flags
.q
.ordering
)
1728 shader
->info
.TessEval
.VertexOrder
= state
->in_qualifier
->ordering
;
1730 shader
->info
.TessEval
.PointMode
= -1;
1731 if (state
->in_qualifier
->flags
.q
.point_mode
)
1732 shader
->info
.TessEval
.PointMode
= state
->in_qualifier
->point_mode
;
1734 case MESA_SHADER_GEOMETRY
:
1735 shader
->info
.Geom
.VerticesOut
= -1;
1736 if (state
->out_qualifier
->flags
.q
.max_vertices
) {
1737 unsigned qual_max_vertices
;
1738 if (state
->out_qualifier
->max_vertices
->
1739 process_qualifier_constant(state
, "max_vertices",
1740 &qual_max_vertices
, true, true)) {
1742 if (qual_max_vertices
> state
->Const
.MaxGeometryOutputVertices
) {
1743 YYLTYPE loc
= state
->out_qualifier
->max_vertices
->get_location();
1744 _mesa_glsl_error(&loc
, state
,
1745 "maximum output vertices (%d) exceeds "
1746 "GL_MAX_GEOMETRY_OUTPUT_VERTICES",
1749 shader
->info
.Geom
.VerticesOut
= qual_max_vertices
;
1753 if (state
->gs_input_prim_type_specified
) {
1754 shader
->info
.Geom
.InputType
= state
->in_qualifier
->prim_type
;
1756 shader
->info
.Geom
.InputType
= PRIM_UNKNOWN
;
1759 if (state
->out_qualifier
->flags
.q
.prim_type
) {
1760 shader
->info
.Geom
.OutputType
= state
->out_qualifier
->prim_type
;
1762 shader
->info
.Geom
.OutputType
= PRIM_UNKNOWN
;
1765 shader
->info
.Geom
.Invocations
= 0;
1766 if (state
->in_qualifier
->flags
.q
.invocations
) {
1767 unsigned invocations
;
1768 if (state
->in_qualifier
->invocations
->
1769 process_qualifier_constant(state
, "invocations",
1770 &invocations
, false)) {
1772 YYLTYPE loc
= state
->in_qualifier
->invocations
->get_location();
1773 if (invocations
> MAX_GEOMETRY_SHADER_INVOCATIONS
) {
1774 _mesa_glsl_error(&loc
, state
,
1775 "invocations (%d) exceeds "
1776 "GL_MAX_GEOMETRY_SHADER_INVOCATIONS",
1779 shader
->info
.Geom
.Invocations
= invocations
;
1784 case MESA_SHADER_COMPUTE
:
1785 if (state
->cs_input_local_size_specified
) {
1786 for (int i
= 0; i
< 3; i
++)
1787 shader
->info
.Comp
.LocalSize
[i
] = state
->cs_input_local_size
[i
];
1789 for (int i
= 0; i
< 3; i
++)
1790 shader
->info
.Comp
.LocalSize
[i
] = 0;
1794 case MESA_SHADER_FRAGMENT
:
1795 shader
->info
.redeclares_gl_fragcoord
=
1796 state
->fs_redeclares_gl_fragcoord
;
1797 shader
->info
.uses_gl_fragcoord
= state
->fs_uses_gl_fragcoord
;
1798 shader
->info
.pixel_center_integer
= state
->fs_pixel_center_integer
;
1799 shader
->info
.origin_upper_left
= state
->fs_origin_upper_left
;
1800 shader
->info
.ARB_fragment_coord_conventions_enable
=
1801 state
->ARB_fragment_coord_conventions_enable
;
1802 shader
->info
.EarlyFragmentTests
= state
->fs_early_fragment_tests
;
1803 shader
->info
.BlendSupport
= state
->fs_blend_support
;
1807 /* Nothing to do. */
1815 assign_subroutine_indexes(struct gl_shader
*sh
,
1816 struct _mesa_glsl_parse_state
*state
)
1821 for (j
= 0; j
< state
->num_subroutines
; j
++) {
1822 while (state
->subroutines
[j
]->subroutine_index
== -1) {
1823 for (k
= 0; k
< state
->num_subroutines
; k
++) {
1824 if (state
->subroutines
[k
]->subroutine_index
== index
)
1826 else if (k
== state
->num_subroutines
- 1) {
1827 state
->subroutines
[j
]->subroutine_index
= index
;
1836 add_builtin_defines(struct _mesa_glsl_parse_state
*state
,
1837 void (*add_builtin_define
)(struct glcpp_parser
*, const char *, int),
1838 struct glcpp_parser
*data
,
1842 unsigned gl_version
= state
->ctx
->Extensions
.Version
;
1843 gl_api api
= state
->ctx
->API
;
1845 if (gl_version
!= 0xff) {
1847 for (i
= 0; i
< state
->num_supported_versions
; i
++) {
1848 if (state
->supported_versions
[i
].ver
== version
&&
1849 state
->supported_versions
[i
].es
== es
) {
1850 gl_version
= state
->supported_versions
[i
].gl_ver
;
1855 if (i
== state
->num_supported_versions
)
1860 api
= API_OPENGLES2
;
1862 for (unsigned i
= 0;
1863 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
1864 const _mesa_glsl_extension
*extension
1865 = &_mesa_glsl_supported_extensions
[i
];
1866 if (extension
->compatible_with_state(state
, api
, gl_version
)) {
1867 add_builtin_define(data
, extension
->name
, 1);
1873 _mesa_glsl_compile_shader(struct gl_context
*ctx
, struct gl_shader
*shader
,
1874 bool dump_ast
, bool dump_hir
)
1876 struct _mesa_glsl_parse_state
*state
=
1877 new(shader
) _mesa_glsl_parse_state(ctx
, shader
->Stage
, shader
);
1878 const char *source
= shader
->Source
;
1880 if (ctx
->Const
.GenerateTemporaryNames
)
1881 (void) p_atomic_cmpxchg(&ir_variable::temporaries_allocate_names
,
1884 state
->error
= glcpp_preprocess(state
, &source
, &state
->info_log
,
1885 add_builtin_defines
, state
, ctx
);
1887 if (!state
->error
) {
1888 _mesa_glsl_lexer_ctor(state
, source
);
1889 _mesa_glsl_parse(state
);
1890 _mesa_glsl_lexer_dtor(state
);
1894 foreach_list_typed(ast_node
, ast
, link
, &state
->translation_unit
) {
1900 ralloc_free(shader
->ir
);
1901 shader
->ir
= new(shader
) exec_list
;
1902 if (!state
->error
&& !state
->translation_unit
.is_empty())
1903 _mesa_ast_to_hir(shader
->ir
, state
);
1905 if (!state
->error
) {
1906 validate_ir_tree(shader
->ir
);
1908 /* Print out the unoptimized IR. */
1910 _mesa_print_ir(stdout
, shader
->ir
, state
);
1915 if (!state
->error
&& !shader
->ir
->is_empty()) {
1916 struct gl_shader_compiler_options
*options
=
1917 &ctx
->Const
.ShaderCompilerOptions
[shader
->Stage
];
1919 assign_subroutine_indexes(shader
, state
);
1920 lower_subroutine(shader
->ir
, state
);
1921 /* Do some optimization at compile time to reduce shader IR size
1922 * and reduce later work if the same shader is linked multiple times
1924 while (do_common_optimization(shader
->ir
, false, false, options
,
1925 ctx
->Const
.NativeIntegers
))
1928 validate_ir_tree(shader
->ir
);
1930 enum ir_variable_mode other
;
1931 switch (shader
->Stage
) {
1932 case MESA_SHADER_VERTEX
:
1933 other
= ir_var_shader_in
;
1935 case MESA_SHADER_FRAGMENT
:
1936 other
= ir_var_shader_out
;
1939 /* Something invalid to ensure optimize_dead_builtin_uniforms
1940 * doesn't remove anything other than uniforms or constants.
1942 other
= ir_var_mode_count
;
1946 optimize_dead_builtin_variables(shader
->ir
, other
);
1948 validate_ir_tree(shader
->ir
);
1951 if (shader
->InfoLog
)
1952 ralloc_free(shader
->InfoLog
);
1955 set_shader_inout_layout(shader
, state
);
1957 shader
->symbols
= new(shader
->ir
) glsl_symbol_table
;
1958 shader
->CompileStatus
= !state
->error
;
1959 shader
->InfoLog
= state
->info_log
;
1960 shader
->Version
= state
->language_version
;
1961 shader
->IsES
= state
->es_shader
;
1962 shader
->info
.uses_builtin_functions
= state
->uses_builtin_functions
;
1964 /* Retain any live IR, but trash the rest. */
1965 reparent_ir(shader
->ir
, shader
->ir
);
1967 /* Destroy the symbol table. Create a new symbol table that contains only
1968 * the variables and functions that still exist in the IR. The symbol
1969 * table will be used later during linking.
1971 * There must NOT be any freed objects still referenced by the symbol
1972 * table. That could cause the linker to dereference freed memory.
1974 * We don't have to worry about types or interface-types here because those
1975 * are fly-weights that are looked up by glsl_type.
1977 foreach_in_list (ir_instruction
, ir
, shader
->ir
) {
1978 switch (ir
->ir_type
) {
1979 case ir_type_function
:
1980 shader
->symbols
->add_function((ir_function
*) ir
);
1982 case ir_type_variable
: {
1983 ir_variable
*const var
= (ir_variable
*) ir
;
1985 if (var
->data
.mode
!= ir_var_temporary
)
1986 shader
->symbols
->add_variable(var
);
1994 _mesa_glsl_initialize_derived_variables(ctx
, shader
);
1996 delete state
->symbols
;
2002 * Do the set of common optimizations passes
2004 * \param ir List of instructions to be optimized
2005 * \param linked Is the shader linked? This enables
2006 * optimizations passes that remove code at
2007 * global scope and could cause linking to
2009 * \param uniform_locations_assigned Have locations already been assigned for
2010 * uniforms? This prevents the declarations
2011 * of unused uniforms from being removed.
2012 * The setting of this flag only matters if
2013 * \c linked is \c true.
2014 * \param max_unroll_iterations Maximum number of loop iterations to be
2015 * unrolled. Setting to 0 disables loop
2017 * \param options The driver's preferred shader options.
2020 do_common_optimization(exec_list
*ir
, bool linked
,
2021 bool uniform_locations_assigned
,
2022 const struct gl_shader_compiler_options
*options
,
2023 bool native_integers
)
2025 const bool debug
= false;
2026 GLboolean progress
= GL_FALSE
;
2028 #define OPT(PASS, ...) do { \
2030 fprintf(stderr, "START GLSL optimization %s\n", #PASS); \
2031 const bool opt_progress = PASS(__VA_ARGS__); \
2032 progress = opt_progress || progress; \
2034 _mesa_print_ir(stderr, ir, NULL); \
2035 fprintf(stderr, "GLSL optimization %s: %s progress\n", \
2036 #PASS, opt_progress ? "made" : "no"); \
2038 progress = PASS(__VA_ARGS__) || progress; \
2042 OPT(lower_instructions
, ir
, SUB_TO_ADD_NEG
);
2045 OPT(do_function_inlining
, ir
);
2046 OPT(do_dead_functions
, ir
);
2047 OPT(do_structure_splitting
, ir
);
2049 propagate_invariance(ir
);
2050 OPT(do_if_simplification
, ir
);
2051 OPT(opt_flatten_nested_if_blocks
, ir
);
2052 OPT(opt_conditional_discard
, ir
);
2053 OPT(do_copy_propagation
, ir
);
2054 OPT(do_copy_propagation_elements
, ir
);
2056 if (options
->OptimizeForAOS
&& !linked
)
2057 OPT(opt_flip_matrices
, ir
);
2059 if (linked
&& options
->OptimizeForAOS
) {
2060 OPT(do_vectorize
, ir
);
2064 OPT(do_dead_code
, ir
, uniform_locations_assigned
);
2066 OPT(do_dead_code_unlinked
, ir
);
2067 OPT(do_dead_code_local
, ir
);
2068 OPT(do_tree_grafting
, ir
);
2069 OPT(do_constant_propagation
, ir
);
2071 OPT(do_constant_variable
, ir
);
2073 OPT(do_constant_variable_unlinked
, ir
);
2074 OPT(do_constant_folding
, ir
);
2075 OPT(do_minmax_prune
, ir
);
2076 OPT(do_rebalance_tree
, ir
);
2077 OPT(do_algebraic
, ir
, native_integers
, options
);
2078 OPT(do_lower_jumps
, ir
);
2079 OPT(do_vec_index_to_swizzle
, ir
);
2080 OPT(lower_vector_insert
, ir
, false);
2081 OPT(do_swizzle_swizzle
, ir
);
2082 OPT(do_noop_swizzle
, ir
);
2084 OPT(optimize_split_arrays
, ir
, linked
);
2085 OPT(optimize_redundant_jumps
, ir
);
2087 loop_state
*ls
= analyze_loop_variables(ir
);
2088 if (ls
->loop_found
) {
2089 OPT(set_loop_controls
, ir
, ls
);
2090 OPT(unroll_loops
, ir
, ls
, options
);
2102 * To be called at GL teardown time, this frees compiler datastructures.
2104 * After calling this, any previously compiled shaders and shader
2105 * programs would be invalid. So this should happen at approximately
2109 _mesa_destroy_shader_compiler(void)
2111 _mesa_destroy_shader_compiler_caches();
2113 _mesa_glsl_release_types();
2117 * Releases compiler caches to trade off performance for memory.
2119 * Intended to be used with glReleaseShaderCompiler().
2122 _mesa_destroy_shader_compiler_caches(void)
2124 _mesa_glsl_release_builtin_functions();