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.
29 #include "main/core.h" /* for struct gl_context */
30 #include "main/context.h"
31 #include "main/shaderobj.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 unsigned known_desktop_glsl_versions
[] =
53 { 110, 120, 130, 140, 150, 330, 400, 410, 420, 430 };
56 _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context
*_ctx
,
57 gl_shader_stage stage
,
59 : ctx(_ctx
), switch_state()
61 assert(stage
< MESA_SHADER_STAGES
);
65 this->translation_unit
.make_empty();
66 this->symbols
= new(mem_ctx
) glsl_symbol_table
;
68 this->num_uniform_blocks
= 0;
69 this->uniform_block_array_size
= 0;
70 this->uniform_blocks
= NULL
;
72 this->info_log
= ralloc_strdup(mem_ctx
, "");
74 this->loop_nesting_ast
= NULL
;
76 this->struct_specifier_depth
= 0;
78 this->uses_builtin_functions
= false;
80 /* Set default language version and extensions */
81 this->language_version
= ctx
->Const
.ForceGLSLVersion
?
82 ctx
->Const
.ForceGLSLVersion
: 110;
83 this->es_shader
= false;
84 this->ARB_texture_rectangle_enable
= true;
86 /* OpenGL ES 2.0 has different defaults from desktop GL. */
87 if (ctx
->API
== API_OPENGLES2
) {
88 this->language_version
= 100;
89 this->es_shader
= true;
90 this->ARB_texture_rectangle_enable
= false;
93 this->extensions
= &ctx
->Extensions
;
95 this->Const
.MaxLights
= ctx
->Const
.MaxLights
;
96 this->Const
.MaxClipPlanes
= ctx
->Const
.MaxClipPlanes
;
97 this->Const
.MaxTextureUnits
= ctx
->Const
.MaxTextureUnits
;
98 this->Const
.MaxTextureCoords
= ctx
->Const
.MaxTextureCoordUnits
;
99 this->Const
.MaxVertexAttribs
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
;
100 this->Const
.MaxVertexUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxUniformComponents
;
101 this->Const
.MaxVertexTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
;
102 this->Const
.MaxCombinedTextureImageUnits
= ctx
->Const
.MaxCombinedTextureImageUnits
;
103 this->Const
.MaxTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
;
104 this->Const
.MaxFragmentUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxUniformComponents
;
105 this->Const
.MinProgramTexelOffset
= ctx
->Const
.MinProgramTexelOffset
;
106 this->Const
.MaxProgramTexelOffset
= ctx
->Const
.MaxProgramTexelOffset
;
108 this->Const
.MaxDrawBuffers
= ctx
->Const
.MaxDrawBuffers
;
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
.MaxGeometryAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
;
122 this->Const
.MaxFragmentAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
;
123 this->Const
.MaxCombinedAtomicCounters
= ctx
->Const
.MaxCombinedAtomicCounters
;
124 this->Const
.MaxAtomicBufferBindings
= ctx
->Const
.MaxAtomicBufferBindings
;
126 this->current_function
= NULL
;
127 this->toplevel_ir
= NULL
;
128 this->found_return
= false;
129 this->all_invariant
= false;
130 this->user_structures
= NULL
;
131 this->num_user_structures
= 0;
133 /* Populate the list of supported GLSL versions */
134 /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or
135 * the OpenGL 3.2 Core context is supported, this logic will need
136 * change. Older versions of GLSL are no longer supported
137 * outside the compatibility contexts of 3.x.
139 this->num_supported_versions
= 0;
140 if (_mesa_is_desktop_gl(ctx
)) {
141 for (unsigned i
= 0; i
< ARRAY_SIZE(known_desktop_glsl_versions
); i
++) {
142 if (known_desktop_glsl_versions
[i
] <= ctx
->Const
.GLSLVersion
) {
143 this->supported_versions
[this->num_supported_versions
].ver
144 = known_desktop_glsl_versions
[i
];
145 this->supported_versions
[this->num_supported_versions
].es
= false;
146 this->num_supported_versions
++;
150 if (ctx
->API
== API_OPENGLES2
|| ctx
->Extensions
.ARB_ES2_compatibility
) {
151 this->supported_versions
[this->num_supported_versions
].ver
= 100;
152 this->supported_versions
[this->num_supported_versions
].es
= true;
153 this->num_supported_versions
++;
155 if (_mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_ES3_compatibility
) {
156 this->supported_versions
[this->num_supported_versions
].ver
= 300;
157 this->supported_versions
[this->num_supported_versions
].es
= true;
158 this->num_supported_versions
++;
160 assert(this->num_supported_versions
161 <= ARRAY_SIZE(this->supported_versions
));
163 /* Create a string for use in error messages to tell the user which GLSL
164 * versions are supported.
166 char *supported
= ralloc_strdup(this, "");
167 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
168 unsigned ver
= this->supported_versions
[i
].ver
;
169 const char *const prefix
= (i
== 0)
171 : ((i
== this->num_supported_versions
- 1) ? ", and " : ", ");
172 const char *const suffix
= (this->supported_versions
[i
].es
) ? " ES" : "";
174 ralloc_asprintf_append(& supported
, "%s%u.%02u%s",
176 ver
/ 100, ver
% 100,
180 this->supported_version_string
= supported
;
182 if (ctx
->Const
.ForceGLSLExtensionsWarn
)
183 _mesa_glsl_process_extension("all", NULL
, "warn", NULL
, this);
185 this->default_uniform_qualifier
= new(this) ast_type_qualifier();
186 this->default_uniform_qualifier
->flags
.q
.shared
= 1;
187 this->default_uniform_qualifier
->flags
.q
.column_major
= 1;
189 this->gs_input_prim_type_specified
= false;
190 this->gs_input_prim_type
= GL_POINTS
;
191 this->gs_input_size
= 0;
192 this->out_qualifier
= new(this) ast_type_qualifier();
193 memset(this->atomic_counter_offsets
, 0,
194 sizeof(this->atomic_counter_offsets
));
198 * Determine whether the current GLSL version is sufficiently high to support
199 * a certain feature, and generate an error message if it isn't.
201 * \param required_glsl_version and \c required_glsl_es_version are
202 * interpreted as they are in _mesa_glsl_parse_state::is_version().
204 * \param locp is the parser location where the error should be reported.
206 * \param fmt (and additional arguments) constitute a printf-style error
207 * message to report if the version check fails. Information about the
208 * current and required GLSL versions will be appended. So, for example, if
209 * the GLSL version being compiled is 1.20, and check_version(130, 300, locp,
210 * "foo unsupported") is called, the error message will be "foo unsupported in
211 * GLSL 1.20 (GLSL 1.30 or GLSL 3.00 ES required)".
214 _mesa_glsl_parse_state::check_version(unsigned required_glsl_version
,
215 unsigned required_glsl_es_version
,
216 YYLTYPE
*locp
, const char *fmt
, ...)
218 if (this->is_version(required_glsl_version
, required_glsl_es_version
))
223 char *problem
= ralloc_vasprintf(this, fmt
, args
);
225 const char *glsl_version_string
226 = glsl_compute_version_string(this, false, required_glsl_version
);
227 const char *glsl_es_version_string
228 = glsl_compute_version_string(this, true, required_glsl_es_version
);
229 const char *requirement_string
= "";
230 if (required_glsl_version
&& required_glsl_es_version
) {
231 requirement_string
= ralloc_asprintf(this, " (%s or %s required)",
233 glsl_es_version_string
);
234 } else if (required_glsl_version
) {
235 requirement_string
= ralloc_asprintf(this, " (%s required)",
236 glsl_version_string
);
237 } else if (required_glsl_es_version
) {
238 requirement_string
= ralloc_asprintf(this, " (%s required)",
239 glsl_es_version_string
);
241 _mesa_glsl_error(locp
, this, "%s in %s%s",
242 problem
, this->get_version_string(),
249 * Process a GLSL #version directive.
251 * \param version is the integer that follows the #version token.
253 * \param ident is a string identifier that follows the integer, if any is
254 * present. Otherwise NULL.
257 _mesa_glsl_parse_state::process_version_directive(YYLTYPE
*locp
, int version
,
260 bool es_token_present
= false;
262 if (strcmp(ident
, "es") == 0) {
263 es_token_present
= true;
264 } else if (version
>= 150) {
265 if (strcmp(ident
, "core") == 0) {
266 /* Accept the token. There's no need to record that this is
267 * a core profile shader since that's the only profile we support.
269 } else if (strcmp(ident
, "compatibility") == 0) {
270 _mesa_glsl_error(locp
, this,
271 "the compatibility profile is not supported");
273 _mesa_glsl_error(locp
, this,
274 "\"%s\" is not a valid shading language profile; "
275 "if present, it must be \"core\"", ident
);
278 _mesa_glsl_error(locp
, this,
279 "illegal text following version number");
283 this->es_shader
= es_token_present
;
284 if (version
== 100) {
285 if (es_token_present
) {
286 _mesa_glsl_error(locp
, this,
287 "GLSL 1.00 ES should be selected using "
290 this->es_shader
= true;
294 this->language_version
= version
;
296 bool supported
= false;
297 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
298 if (this->supported_versions
[i
].ver
== (unsigned) version
299 && this->supported_versions
[i
].es
== this->es_shader
) {
306 _mesa_glsl_error(locp
, this, "%s is not supported. "
307 "Supported versions are: %s",
308 this->get_version_string(),
309 this->supported_version_string
);
311 /* On exit, the language_version must be set to a valid value.
312 * Later calls to _mesa_glsl_initialize_types will misbehave if
313 * the version is invalid.
315 switch (this->ctx
->API
) {
316 case API_OPENGL_COMPAT
:
317 case API_OPENGL_CORE
:
318 this->language_version
= this->ctx
->Const
.GLSLVersion
;
322 assert(!"Should not get here.");
326 this->language_version
= 100;
334 * Translate a gl_shader_stage to a short shader stage name for debug
335 * printouts and error messages.
338 _mesa_shader_stage_to_string(unsigned stage
)
341 case MESA_SHADER_VERTEX
: return "vertex";
342 case MESA_SHADER_FRAGMENT
: return "fragment";
343 case MESA_SHADER_GEOMETRY
: return "geometry";
346 assert(!"Should not get here.");
350 /* This helper function will append the given message to the shader's
351 info log and report it via GL_ARB_debug_output. Per that extension,
352 'type' is one of the enum values classifying the message, and
353 'id' is the implementation-defined ID of the given message. */
355 _mesa_glsl_msg(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
356 GLenum type
, const char *fmt
, va_list ap
)
358 bool error
= (type
== MESA_DEBUG_TYPE_ERROR
);
361 assert(state
->info_log
!= NULL
);
363 /* Get the offset that the new message will be written to. */
364 int msg_offset
= strlen(state
->info_log
);
366 ralloc_asprintf_append(&state
->info_log
, "%u:%u(%u): %s: ",
370 error
? "error" : "warning");
371 ralloc_vasprintf_append(&state
->info_log
, fmt
, ap
);
373 const char *const msg
= &state
->info_log
[msg_offset
];
374 struct gl_context
*ctx
= state
->ctx
;
376 /* Report the error via GL_ARB_debug_output. */
377 _mesa_shader_debug(ctx
, type
, &msg_id
, msg
, strlen(msg
));
379 ralloc_strcat(&state
->info_log
, "\n");
383 _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
384 const char *fmt
, ...)
391 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_ERROR
, fmt
, ap
);
397 _mesa_glsl_warning(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
398 const char *fmt
, ...)
403 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_OTHER
, fmt
, ap
);
409 * Enum representing the possible behaviors that can be specified in
410 * an #extension directive.
420 * Element type for _mesa_glsl_supported_extensions
422 struct _mesa_glsl_extension
{
424 * Name of the extension when referred to in a GLSL extension
429 /** True if this extension is available to desktop GL shaders */
432 /** True if this extension is available to GLES shaders */
436 * Flag in the gl_extensions struct indicating whether this
437 * extension is supported by the driver, or
438 * &gl_extensions::dummy_true if supported by all drivers.
440 * Note: the type (GLboolean gl_extensions::*) is a "pointer to
441 * member" type, the type-safe alternative to the "offsetof" macro.
444 * - foo bar::* p declares p to be an "offset" to a field of type
445 * foo that exists within struct bar
446 * - &bar::baz computes the "offset" of field baz within struct bar
447 * - x.*p accesses the field of x that exists at "offset" p
448 * - x->*p is equivalent to (*x).*p
450 const GLboolean
gl_extensions::* supported_flag
;
453 * Flag in the _mesa_glsl_parse_state struct that should be set
454 * when this extension is enabled.
456 * See note in _mesa_glsl_extension::supported_flag about "pointer
459 bool _mesa_glsl_parse_state::* enable_flag
;
462 * Flag in the _mesa_glsl_parse_state struct that should be set
463 * when the shader requests "warn" behavior for this extension.
465 * See note in _mesa_glsl_extension::supported_flag about "pointer
468 bool _mesa_glsl_parse_state::* warn_flag
;
471 bool compatible_with_state(const _mesa_glsl_parse_state
*state
) const;
472 void set_flags(_mesa_glsl_parse_state
*state
, ext_behavior behavior
) const;
475 #define EXT(NAME, GL, ES, SUPPORTED_FLAG) \
476 { "GL_" #NAME, GL, ES, &gl_extensions::SUPPORTED_FLAG, \
477 &_mesa_glsl_parse_state::NAME##_enable, \
478 &_mesa_glsl_parse_state::NAME##_warn }
481 * Table of extensions that can be enabled/disabled within a shader,
482 * and the conditions under which they are supported.
484 static const _mesa_glsl_extension _mesa_glsl_supported_extensions
[] = {
485 /* API availability */
486 /* name GL ES supported flag */
487 EXT(ARB_conservative_depth
, true, false, ARB_conservative_depth
),
488 EXT(ARB_draw_buffers
, true, false, dummy_true
),
489 EXT(ARB_draw_instanced
, true, false, ARB_draw_instanced
),
490 EXT(ARB_explicit_attrib_location
, true, false, ARB_explicit_attrib_location
),
491 EXT(ARB_fragment_coord_conventions
, true, false, ARB_fragment_coord_conventions
),
492 EXT(ARB_texture_rectangle
, true, false, dummy_true
),
493 EXT(EXT_texture_array
, true, false, EXT_texture_array
),
494 EXT(ARB_shader_texture_lod
, true, false, ARB_shader_texture_lod
),
495 EXT(ARB_shader_stencil_export
, true, false, ARB_shader_stencil_export
),
496 EXT(AMD_conservative_depth
, true, false, ARB_conservative_depth
),
497 EXT(AMD_shader_stencil_export
, true, false, ARB_shader_stencil_export
),
498 EXT(OES_texture_3D
, false, true, EXT_texture3D
),
499 EXT(OES_EGL_image_external
, false, true, OES_EGL_image_external
),
500 EXT(ARB_shader_bit_encoding
, true, false, ARB_shader_bit_encoding
),
501 EXT(ARB_uniform_buffer_object
, true, false, ARB_uniform_buffer_object
),
502 EXT(OES_standard_derivatives
, false, true, OES_standard_derivatives
),
503 EXT(ARB_texture_cube_map_array
, true, false, ARB_texture_cube_map_array
),
504 EXT(ARB_shading_language_packing
, true, false, ARB_shading_language_packing
),
505 EXT(ARB_shading_language_420pack
, true, false, ARB_shading_language_420pack
),
506 EXT(ARB_texture_multisample
, true, false, ARB_texture_multisample
),
507 EXT(ARB_texture_query_levels
, true, false, ARB_texture_query_levels
),
508 EXT(ARB_texture_query_lod
, true, false, ARB_texture_query_lod
),
509 EXT(ARB_gpu_shader5
, true, false, ARB_gpu_shader5
),
510 EXT(AMD_vertex_shader_layer
, true, false, AMD_vertex_shader_layer
),
511 EXT(EXT_shader_integer_mix
, true, true, EXT_shader_integer_mix
),
512 EXT(ARB_texture_gather
, true, false, ARB_texture_gather
),
513 EXT(ARB_shader_atomic_counters
, true, false, ARB_shader_atomic_counters
),
514 EXT(ARB_sample_shading
, true, false, ARB_sample_shading
),
515 EXT(AMD_shader_trinary_minmax
, true, false, dummy_true
),
516 EXT(ARB_viewport_array
, true, false, ARB_viewport_array
),
523 * Determine whether a given extension is compatible with the target,
524 * API, and extension information in the current parser state.
526 bool _mesa_glsl_extension::compatible_with_state(const _mesa_glsl_parse_state
*
529 /* Check that this extension matches whether we are compiling
530 * for desktop GL or GLES.
532 if (state
->es_shader
) {
533 if (!this->avail_in_ES
) return false;
535 if (!this->avail_in_GL
) return false;
538 /* Check that this extension is supported by the OpenGL
541 * Note: the ->* operator indexes into state->extensions by the
542 * offset this->supported_flag. See
543 * _mesa_glsl_extension::supported_flag for more info.
545 return state
->extensions
->*(this->supported_flag
);
549 * Set the appropriate flags in the parser state to establish the
550 * given behavior for this extension.
552 void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state
*state
,
553 ext_behavior behavior
) const
555 /* Note: the ->* operator indexes into state by the
556 * offsets this->enable_flag and this->warn_flag. See
557 * _mesa_glsl_extension::supported_flag for more info.
559 state
->*(this->enable_flag
) = (behavior
!= extension_disable
);
560 state
->*(this->warn_flag
) = (behavior
== extension_warn
);
564 * Find an extension by name in _mesa_glsl_supported_extensions. If
565 * the name is not found, return NULL.
567 static const _mesa_glsl_extension
*find_extension(const char *name
)
569 for (unsigned i
= 0; i
< Elements(_mesa_glsl_supported_extensions
); ++i
) {
570 if (strcmp(name
, _mesa_glsl_supported_extensions
[i
].name
) == 0) {
571 return &_mesa_glsl_supported_extensions
[i
];
579 _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
580 const char *behavior_string
, YYLTYPE
*behavior_locp
,
581 _mesa_glsl_parse_state
*state
)
583 ext_behavior behavior
;
584 if (strcmp(behavior_string
, "warn") == 0) {
585 behavior
= extension_warn
;
586 } else if (strcmp(behavior_string
, "require") == 0) {
587 behavior
= extension_require
;
588 } else if (strcmp(behavior_string
, "enable") == 0) {
589 behavior
= extension_enable
;
590 } else if (strcmp(behavior_string
, "disable") == 0) {
591 behavior
= extension_disable
;
593 _mesa_glsl_error(behavior_locp
, state
,
594 "unknown extension behavior `%s'",
599 if (strcmp(name
, "all") == 0) {
600 if ((behavior
== extension_enable
) || (behavior
== extension_require
)) {
601 _mesa_glsl_error(name_locp
, state
, "cannot %s all extensions",
602 (behavior
== extension_enable
)
603 ? "enable" : "require");
607 i
< Elements(_mesa_glsl_supported_extensions
); ++i
) {
608 const _mesa_glsl_extension
*extension
609 = &_mesa_glsl_supported_extensions
[i
];
610 if (extension
->compatible_with_state(state
)) {
611 _mesa_glsl_supported_extensions
[i
].set_flags(state
, behavior
);
616 const _mesa_glsl_extension
*extension
= find_extension(name
);
617 if (extension
&& extension
->compatible_with_state(state
)) {
618 extension
->set_flags(state
, behavior
);
620 static const char *const fmt
= "extension `%s' unsupported in %s shader";
622 if (behavior
== extension_require
) {
623 _mesa_glsl_error(name_locp
, state
, fmt
,
624 name
, _mesa_shader_stage_to_string(state
->stage
));
627 _mesa_glsl_warning(name_locp
, state
, fmt
,
628 name
, _mesa_shader_stage_to_string(state
->stage
));
638 * Returns the name of the type of a column of a matrix. E.g.,
644 _mesa_ast_get_matrix_column_type_name(const char *matrix_type_name
)
646 static const char *vec_name
[] = { "vec2", "vec3", "vec4" };
648 /* The number of elements in a row of a matrix is specified by the last
649 * character of the matrix type name.
651 long rows
= strtol(matrix_type_name
+ strlen(matrix_type_name
) - 1,
653 return vec_name
[rows
- 2];
657 * Recurses through <type> and <expr> if <expr> is an aggregate initializer
658 * and sets <expr>'s <constructor_type> field to <type>. Gives later functions
659 * (process_array_constructor, et al) sufficient information to do type
662 * Operates on assignments involving an aggregate initializer. E.g.,
664 * vec4 pos = {1.0, -1.0, 0.0, 1.0};
666 * or more ridiculously,
679 * {1.0, 2.0, 3.0, 4.0}, // a[0].v[0]
680 * {5.0, 6.0, 7.0, 8.0} // a[0].v[1]
685 * {1.0, 2.0, 3.0, 4.0}, // a[1].v[0]
686 * {5.0, 6.0, 7.0, 8.0} // a[1].v[1]
692 * {1.0, 2.0, 3.0, 4.0}, // b.v[0]
693 * {5.0, 6.0, 7.0, 8.0} // b.v[1]
699 * This pass is necessary because the right-hand side of <type> e = { ... }
700 * doesn't contain sufficient information to determine if the types match.
703 _mesa_ast_set_aggregate_type(const ast_type_specifier
*type
,
704 ast_expression
*expr
,
705 _mesa_glsl_parse_state
*state
)
708 ast_aggregate_initializer
*ai
= (ast_aggregate_initializer
*)expr
;
709 ai
->constructor_type
= (ast_type_specifier
*)type
;
711 bool is_declaration
= ai
->constructor_type
->structure
!= NULL
;
712 if (!is_declaration
) {
713 /* Look up <type> name in the symbol table to see if it's a struct. */
714 const ast_type_specifier
*struct_type
=
715 state
->symbols
->get_type_ast(type
->type_name
);
716 ai
->constructor_type
->structure
=
717 struct_type
? new(ctx
) ast_struct_specifier(*struct_type
->structure
)
721 /* If the aggregate is an array, recursively set its elements' types. */
722 if (type
->is_array
) {
723 /* We want to set the element type which is not an array itself, so make
724 * a copy of the array type and set its is_array field to false.
726 * E.g., if <type> if struct S[2] we want to set each element's type to
729 * FINISHME: Update when ARB_array_of_arrays is supported.
731 const ast_type_specifier
*non_array_type
=
732 new(ctx
) ast_type_specifier(type
, false, NULL
);
734 for (exec_node
*expr_node
= ai
->expressions
.head
;
735 !expr_node
->is_tail_sentinel();
736 expr_node
= expr_node
->next
) {
737 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
740 if (expr
->oper
== ast_aggregate
)
741 _mesa_ast_set_aggregate_type(non_array_type
, expr
, state
);
744 /* If the aggregate is a struct, recursively set its fields' types. */
745 } else if (ai
->constructor_type
->structure
) {
746 ai
->constructor_type
->structure
->is_declaration
= is_declaration
;
747 exec_node
*expr_node
= ai
->expressions
.head
;
749 /* Iterate through the struct's fields' declarations. E.g., iterate from
750 * "float a, b" to "int c" in the struct below.
757 for (exec_node
*decl_list_node
=
758 ai
->constructor_type
->structure
->declarations
.head
;
759 !decl_list_node
->is_tail_sentinel();
760 decl_list_node
= decl_list_node
->next
) {
761 ast_declarator_list
*decl_list
= exec_node_data(ast_declarator_list
,
762 decl_list_node
, link
);
764 for (exec_node
*decl_node
= decl_list
->declarations
.head
;
765 !decl_node
->is_tail_sentinel() && !expr_node
->is_tail_sentinel();
766 decl_node
= decl_node
->next
, expr_node
= expr_node
->next
) {
767 ast_declaration
*decl
= exec_node_data(ast_declaration
, decl_node
,
769 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
772 bool is_array
= decl_list
->type
->specifier
->is_array
;
773 ast_expression
*array_size
= decl_list
->type
->specifier
->array_size
;
775 /* Recognize variable declarations with the bracketed size attached
776 * to the type rather than the variable name as arrays. E.g.,
781 * are both arrays, but <a>'s array_size is decl->array_size, while
782 * <b>'s array_size is decl_list->type->specifier->array_size.
785 /* FINISHME: Update when ARB_array_of_arrays is supported. */
786 is_array
= decl
->is_array
;
787 array_size
= decl
->array_size
;
790 /* Declaration shadows the <type> parameter. */
791 ast_type_specifier
*type
=
792 new(ctx
) ast_type_specifier(decl_list
->type
->specifier
,
793 is_array
, array_size
);
795 if (expr
->oper
== ast_aggregate
)
796 _mesa_ast_set_aggregate_type(type
, expr
, state
);
800 /* If the aggregate is a matrix, set its columns' types. */
802 const glsl_type
*const constructor_type
=
803 ai
->constructor_type
->glsl_type(&name
, state
);
805 if (constructor_type
->is_matrix()) {
806 for (exec_node
*expr_node
= ai
->expressions
.head
;
807 !expr_node
->is_tail_sentinel();
808 expr_node
= expr_node
->next
) {
809 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
812 /* Declaration shadows the <type> parameter. */
813 ast_type_specifier
*type
= new(ctx
)
814 ast_type_specifier(_mesa_ast_get_matrix_column_type_name(name
));
816 if (expr
->oper
== ast_aggregate
)
817 _mesa_ast_set_aggregate_type(type
, expr
, state
);
825 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier
*q
)
827 if (q
->flags
.q
.constant
)
830 if (q
->flags
.q
.invariant
)
831 printf("invariant ");
833 if (q
->flags
.q
.attribute
)
834 printf("attribute ");
836 if (q
->flags
.q
.varying
)
839 if (q
->flags
.q
.in
&& q
->flags
.q
.out
)
849 if (q
->flags
.q
.centroid
)
851 if (q
->flags
.q
.sample
)
853 if (q
->flags
.q
.uniform
)
855 if (q
->flags
.q
.smooth
)
859 if (q
->flags
.q
.noperspective
)
860 printf("noperspective ");
865 ast_node::print(void) const
867 printf("unhandled node ");
871 ast_node::ast_node(void)
873 this->location
.source
= 0;
874 this->location
.line
= 0;
875 this->location
.column
= 0;
880 ast_opt_array_size_print(bool is_array
, const ast_expression
*array_size
)
894 ast_compound_statement::print(void) const
898 foreach_list_const(n
, &this->statements
) {
899 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
907 ast_compound_statement::ast_compound_statement(int new_scope
,
908 ast_node
*statements
)
910 this->new_scope
= new_scope
;
912 if (statements
!= NULL
) {
913 this->statements
.push_degenerate_list_at_head(&statements
->link
);
919 ast_expression::print(void) const
933 subexpressions
[0]->print();
934 printf("%s ", operator_string(oper
));
935 subexpressions
[1]->print();
938 case ast_field_selection
:
939 subexpressions
[0]->print();
940 printf(". %s ", primary_expression
.identifier
);
949 printf("%s ", operator_string(oper
));
950 subexpressions
[0]->print();
955 subexpressions
[0]->print();
956 printf("%s ", operator_string(oper
));
959 case ast_conditional
:
960 subexpressions
[0]->print();
962 subexpressions
[1]->print();
964 subexpressions
[2]->print();
967 case ast_array_index
:
968 subexpressions
[0]->print();
970 subexpressions
[1]->print();
974 case ast_function_call
: {
975 subexpressions
[0]->print();
978 foreach_list_const (n
, &this->expressions
) {
979 if (n
!= this->expressions
.get_head())
982 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
991 printf("%s ", primary_expression
.identifier
);
994 case ast_int_constant
:
995 printf("%d ", primary_expression
.int_constant
);
998 case ast_uint_constant
:
999 printf("%u ", primary_expression
.uint_constant
);
1002 case ast_float_constant
:
1003 printf("%f ", primary_expression
.float_constant
);
1006 case ast_bool_constant
:
1008 primary_expression
.bool_constant
1009 ? "true" : "false");
1012 case ast_sequence
: {
1014 foreach_list_const(n
, & this->expressions
) {
1015 if (n
!= this->expressions
.get_head())
1018 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
1025 case ast_aggregate
: {
1027 foreach_list_const(n
, & this->expressions
) {
1028 if (n
!= this->expressions
.get_head())
1031 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
1044 ast_expression::ast_expression(int oper
,
1045 ast_expression
*ex0
,
1046 ast_expression
*ex1
,
1047 ast_expression
*ex2
) :
1048 primary_expression()
1050 this->oper
= ast_operators(oper
);
1051 this->subexpressions
[0] = ex0
;
1052 this->subexpressions
[1] = ex1
;
1053 this->subexpressions
[2] = ex2
;
1054 this->non_lvalue_description
= NULL
;
1059 ast_expression_statement::print(void) const
1062 expression
->print();
1068 ast_expression_statement::ast_expression_statement(ast_expression
*ex
) :
1076 ast_function::print(void) const
1078 return_type
->print();
1079 printf(" %s (", identifier
);
1081 foreach_list_const(n
, & this->parameters
) {
1082 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
1090 ast_function::ast_function(void)
1091 : return_type(NULL
), identifier(NULL
), is_definition(false),
1099 ast_fully_specified_type::print(void) const
1101 _mesa_ast_type_qualifier_print(& qualifier
);
1107 ast_parameter_declarator::print(void) const
1111 printf("%s ", identifier
);
1112 ast_opt_array_size_print(is_array
, array_size
);
1117 ast_function_definition::print(void) const
1125 ast_declaration::print(void) const
1127 printf("%s ", identifier
);
1128 ast_opt_array_size_print(is_array
, array_size
);
1132 initializer
->print();
1137 ast_declaration::ast_declaration(const char *identifier
, bool is_array
,
1138 ast_expression
*array_size
,
1139 ast_expression
*initializer
)
1141 this->identifier
= identifier
;
1142 this->is_array
= is_array
;
1143 this->array_size
= array_size
;
1144 this->initializer
= initializer
;
1149 ast_declarator_list::print(void) const
1151 assert(type
|| invariant
);
1156 printf("invariant ");
1158 foreach_list_const (ptr
, & this->declarations
) {
1159 if (ptr
!= this->declarations
.get_head())
1162 ast_node
*ast
= exec_node_data(ast_node
, ptr
, link
);
1170 ast_declarator_list::ast_declarator_list(ast_fully_specified_type
*type
)
1173 this->invariant
= false;
1177 ast_jump_statement::print(void) const
1181 printf("continue; ");
1188 if (opt_return_value
)
1189 opt_return_value
->print();
1194 printf("discard; ");
1200 ast_jump_statement::ast_jump_statement(int mode
, ast_expression
*return_value
)
1201 : opt_return_value(NULL
)
1203 this->mode
= ast_jump_modes(mode
);
1205 if (mode
== ast_return
)
1206 opt_return_value
= return_value
;
1211 ast_selection_statement::print(void) const
1217 then_statement
->print();
1219 if (else_statement
) {
1221 else_statement
->print();
1227 ast_selection_statement::ast_selection_statement(ast_expression
*condition
,
1228 ast_node
*then_statement
,
1229 ast_node
*else_statement
)
1231 this->condition
= condition
;
1232 this->then_statement
= then_statement
;
1233 this->else_statement
= else_statement
;
1238 ast_switch_statement::print(void) const
1240 printf("switch ( ");
1241 test_expression
->print();
1248 ast_switch_statement::ast_switch_statement(ast_expression
*test_expression
,
1251 this->test_expression
= test_expression
;
1257 ast_switch_body::print(void) const
1260 if (stmts
!= NULL
) {
1267 ast_switch_body::ast_switch_body(ast_case_statement_list
*stmts
)
1269 this->stmts
= stmts
;
1273 void ast_case_label::print(void) const
1275 if (test_value
!= NULL
) {
1277 test_value
->print();
1280 printf("default: ");
1285 ast_case_label::ast_case_label(ast_expression
*test_value
)
1287 this->test_value
= test_value
;
1291 void ast_case_label_list::print(void) const
1293 foreach_list_const(n
, & this->labels
) {
1294 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
1301 ast_case_label_list::ast_case_label_list(void)
1306 void ast_case_statement::print(void) const
1309 foreach_list_const(n
, & this->stmts
) {
1310 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
1317 ast_case_statement::ast_case_statement(ast_case_label_list
*labels
)
1319 this->labels
= labels
;
1323 void ast_case_statement_list::print(void) const
1325 foreach_list_const(n
, & this->cases
) {
1326 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
1332 ast_case_statement_list::ast_case_statement_list(void)
1338 ast_iteration_statement::print(void) const
1344 init_statement
->print();
1351 if (rest_expression
)
1352 rest_expression
->print();
1378 ast_iteration_statement::ast_iteration_statement(int mode
,
1380 ast_node
*condition
,
1381 ast_expression
*rest_expression
,
1384 this->mode
= ast_iteration_modes(mode
);
1385 this->init_statement
= init
;
1386 this->condition
= condition
;
1387 this->rest_expression
= rest_expression
;
1393 ast_struct_specifier::print(void) const
1395 printf("struct %s { ", name
);
1396 foreach_list_const(n
, &this->declarations
) {
1397 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
1404 ast_struct_specifier::ast_struct_specifier(const char *identifier
,
1405 ast_declarator_list
*declarator_list
)
1407 if (identifier
== NULL
) {
1408 static unsigned anon_count
= 1;
1409 identifier
= ralloc_asprintf(this, "#anon_struct_%04x", anon_count
);
1413 this->declarations
.push_degenerate_list_at_head(&declarator_list
->link
);
1414 is_declaration
= true;
1418 set_shader_inout_layout(struct gl_shader
*shader
,
1419 struct _mesa_glsl_parse_state
*state
)
1421 if (shader
->Stage
!= MESA_SHADER_GEOMETRY
) {
1422 /* Should have been prevented by the parser. */
1423 assert(!state
->gs_input_prim_type_specified
);
1424 assert(!state
->out_qualifier
->flags
.i
);
1428 shader
->Geom
.VerticesOut
= 0;
1429 if (state
->out_qualifier
->flags
.q
.max_vertices
)
1430 shader
->Geom
.VerticesOut
= state
->out_qualifier
->max_vertices
;
1432 if (state
->gs_input_prim_type_specified
) {
1433 shader
->Geom
.InputType
= state
->gs_input_prim_type
;
1435 shader
->Geom
.InputType
= PRIM_UNKNOWN
;
1438 if (state
->out_qualifier
->flags
.q
.prim_type
) {
1439 shader
->Geom
.OutputType
= state
->out_qualifier
->prim_type
;
1441 shader
->Geom
.OutputType
= PRIM_UNKNOWN
;
1448 _mesa_glsl_compile_shader(struct gl_context
*ctx
, struct gl_shader
*shader
,
1449 bool dump_ast
, bool dump_hir
)
1451 struct _mesa_glsl_parse_state
*state
=
1452 new(shader
) _mesa_glsl_parse_state(ctx
, shader
->Stage
, shader
);
1453 const char *source
= shader
->Source
;
1455 state
->error
= glcpp_preprocess(state
, &source
, &state
->info_log
,
1456 &ctx
->Extensions
, ctx
);
1458 if (!state
->error
) {
1459 _mesa_glsl_lexer_ctor(state
, source
);
1460 _mesa_glsl_parse(state
);
1461 _mesa_glsl_lexer_dtor(state
);
1465 foreach_list_const(n
, &state
->translation_unit
) {
1466 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
1472 ralloc_free(shader
->ir
);
1473 shader
->ir
= new(shader
) exec_list
;
1474 if (!state
->error
&& !state
->translation_unit
.is_empty())
1475 _mesa_ast_to_hir(shader
->ir
, state
);
1477 if (!state
->error
) {
1478 validate_ir_tree(shader
->ir
);
1480 /* Print out the unoptimized IR. */
1482 _mesa_print_ir(shader
->ir
, state
);
1487 if (!state
->error
&& !shader
->ir
->is_empty()) {
1488 struct gl_shader_compiler_options
*options
=
1489 &ctx
->ShaderCompilerOptions
[shader
->Stage
];
1491 /* Do some optimization at compile time to reduce shader IR size
1492 * and reduce later work if the same shader is linked multiple times
1494 while (do_common_optimization(shader
->ir
, false, false, 32, options
))
1497 validate_ir_tree(shader
->ir
);
1500 if (shader
->InfoLog
)
1501 ralloc_free(shader
->InfoLog
);
1503 shader
->symbols
= state
->symbols
;
1504 shader
->CompileStatus
= !state
->error
;
1505 shader
->InfoLog
= state
->info_log
;
1506 shader
->Version
= state
->language_version
;
1507 shader
->IsES
= state
->es_shader
;
1508 shader
->uses_builtin_functions
= state
->uses_builtin_functions
;
1510 if (shader
->UniformBlocks
)
1511 ralloc_free(shader
->UniformBlocks
);
1512 shader
->NumUniformBlocks
= state
->num_uniform_blocks
;
1513 shader
->UniformBlocks
= state
->uniform_blocks
;
1514 ralloc_steal(shader
, shader
->UniformBlocks
);
1517 set_shader_inout_layout(shader
, state
);
1519 /* Retain any live IR, but trash the rest. */
1520 reparent_ir(shader
->ir
, shader
->ir
);
1527 * Do the set of common optimizations passes
1529 * \param ir List of instructions to be optimized
1530 * \param linked Is the shader linked? This enables
1531 * optimizations passes that remove code at
1532 * global scope and could cause linking to
1534 * \param uniform_locations_assigned Have locations already been assigned for
1535 * uniforms? This prevents the declarations
1536 * of unused uniforms from being removed.
1537 * The setting of this flag only matters if
1538 * \c linked is \c true.
1539 * \param max_unroll_iterations Maximum number of loop iterations to be
1540 * unrolled. Setting to 0 disables loop
1542 * \param options The driver's preferred shader options.
1545 do_common_optimization(exec_list
*ir
, bool linked
,
1546 bool uniform_locations_assigned
,
1547 unsigned max_unroll_iterations
,
1548 const struct gl_shader_compiler_options
*options
)
1550 GLboolean progress
= GL_FALSE
;
1552 progress
= lower_instructions(ir
, SUB_TO_ADD_NEG
) || progress
;
1555 progress
= do_function_inlining(ir
) || progress
;
1556 progress
= do_dead_functions(ir
) || progress
;
1557 progress
= do_structure_splitting(ir
) || progress
;
1559 progress
= do_if_simplification(ir
) || progress
;
1560 progress
= opt_flatten_nested_if_blocks(ir
) || progress
;
1561 progress
= do_copy_propagation(ir
) || progress
;
1562 progress
= do_copy_propagation_elements(ir
) || progress
;
1564 if (options
->OptimizeForAOS
&& !linked
)
1565 progress
= opt_flip_matrices(ir
) || progress
;
1567 if (linked
&& options
->OptimizeForAOS
) {
1568 progress
= do_vectorize(ir
) || progress
;
1572 progress
= do_dead_code(ir
, uniform_locations_assigned
) || progress
;
1574 progress
= do_dead_code_unlinked(ir
) || progress
;
1575 progress
= do_dead_code_local(ir
) || progress
;
1576 progress
= do_tree_grafting(ir
) || progress
;
1577 progress
= do_constant_propagation(ir
) || progress
;
1579 progress
= do_constant_variable(ir
) || progress
;
1581 progress
= do_constant_variable_unlinked(ir
) || progress
;
1582 progress
= do_constant_folding(ir
) || progress
;
1583 progress
= do_cse(ir
) || progress
;
1584 progress
= do_algebraic(ir
) || progress
;
1585 progress
= do_lower_jumps(ir
) || progress
;
1586 progress
= do_vec_index_to_swizzle(ir
) || progress
;
1587 progress
= lower_vector_insert(ir
, false) || progress
;
1588 progress
= do_swizzle_swizzle(ir
) || progress
;
1589 progress
= do_noop_swizzle(ir
) || progress
;
1591 progress
= optimize_split_arrays(ir
, linked
) || progress
;
1592 progress
= optimize_redundant_jumps(ir
) || progress
;
1594 loop_state
*ls
= analyze_loop_variables(ir
);
1595 if (ls
->loop_found
) {
1596 progress
= set_loop_controls(ir
, ls
) || progress
;
1597 progress
= unroll_loops(ir
, ls
, max_unroll_iterations
) || progress
;
1607 * To be called at GL teardown time, this frees compiler datastructures.
1609 * After calling this, any previously compiled shaders and shader
1610 * programs would be invalid. So this should happen at approximately
1614 _mesa_destroy_shader_compiler(void)
1616 _mesa_destroy_shader_compiler_caches();
1618 _mesa_glsl_release_types();
1622 * Releases compiler caches to trade off performance for memory.
1624 * Intended to be used with glReleaseShaderCompiler().
1627 _mesa_destroy_shader_compiler_caches(void)
1629 _mesa_glsl_release_builtin_functions();