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/shaderobj.h"
31 #include "util/u_atomic.h" /* for p_atomic_cmpxchg */
32 #include "util/ralloc.h"
34 #include "glsl_parser_extras.h"
35 #include "glsl_parser.h"
36 #include "ir_optimization.h"
37 #include "loop_analysis.h"
40 * Format a short human-readable description of the given GLSL version.
43 glsl_compute_version_string(void *mem_ctx
, bool is_es
, unsigned version
)
45 return ralloc_asprintf(mem_ctx
, "GLSL%s %d.%02d", is_es
? " ES" : "",
46 version
/ 100, version
% 100);
50 static const unsigned known_desktop_glsl_versions
[] =
51 { 110, 120, 130, 140, 150, 330, 400, 410, 420, 430, 440, 450 };
54 _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context
*_ctx
,
55 gl_shader_stage stage
,
57 : ctx(_ctx
), cs_input_local_size_specified(false), cs_input_local_size(),
60 assert(stage
< MESA_SHADER_STAGES
);
64 this->translation_unit
.make_empty();
65 this->symbols
= new(mem_ctx
) glsl_symbol_table
;
67 this->info_log
= ralloc_strdup(mem_ctx
, "");
69 this->loop_nesting_ast
= NULL
;
71 this->struct_specifier_depth
= 0;
73 this->uses_builtin_functions
= false;
75 /* Set default language version and extensions */
76 this->language_version
= 110;
77 this->forced_language_version
= ctx
->Const
.ForceGLSLVersion
;
78 this->es_shader
= false;
79 this->ARB_texture_rectangle_enable
= true;
81 /* OpenGL ES 2.0 has different defaults from desktop GL. */
82 if (ctx
->API
== API_OPENGLES2
) {
83 this->language_version
= 100;
84 this->es_shader
= true;
85 this->ARB_texture_rectangle_enable
= false;
88 this->extensions
= &ctx
->Extensions
;
90 this->Const
.MaxLights
= ctx
->Const
.MaxLights
;
91 this->Const
.MaxClipPlanes
= ctx
->Const
.MaxClipPlanes
;
92 this->Const
.MaxTextureUnits
= ctx
->Const
.MaxTextureUnits
;
93 this->Const
.MaxTextureCoords
= ctx
->Const
.MaxTextureCoordUnits
;
94 this->Const
.MaxVertexAttribs
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
;
95 this->Const
.MaxVertexUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxUniformComponents
;
96 this->Const
.MaxVertexTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
;
97 this->Const
.MaxCombinedTextureImageUnits
= ctx
->Const
.MaxCombinedTextureImageUnits
;
98 this->Const
.MaxTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
;
99 this->Const
.MaxFragmentUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxUniformComponents
;
100 this->Const
.MinProgramTexelOffset
= ctx
->Const
.MinProgramTexelOffset
;
101 this->Const
.MaxProgramTexelOffset
= ctx
->Const
.MaxProgramTexelOffset
;
103 this->Const
.MaxDrawBuffers
= ctx
->Const
.MaxDrawBuffers
;
106 this->Const
.MaxVertexOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
;
107 this->Const
.MaxGeometryInputComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
;
108 this->Const
.MaxGeometryOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
;
109 this->Const
.MaxFragmentInputComponents
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
;
110 this->Const
.MaxGeometryTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
;
111 this->Const
.MaxGeometryOutputVertices
= ctx
->Const
.MaxGeometryOutputVertices
;
112 this->Const
.MaxGeometryTotalOutputComponents
= ctx
->Const
.MaxGeometryTotalOutputComponents
;
113 this->Const
.MaxGeometryUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxUniformComponents
;
115 this->Const
.MaxVertexAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicCounters
;
116 this->Const
.MaxTessControlAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicCounters
;
117 this->Const
.MaxTessEvaluationAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicCounters
;
118 this->Const
.MaxGeometryAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
;
119 this->Const
.MaxFragmentAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
;
120 this->Const
.MaxCombinedAtomicCounters
= ctx
->Const
.MaxCombinedAtomicCounters
;
121 this->Const
.MaxAtomicBufferBindings
= ctx
->Const
.MaxAtomicBufferBindings
;
122 this->Const
.MaxVertexAtomicCounterBuffers
=
123 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
;
124 this->Const
.MaxTessControlAtomicCounterBuffers
=
125 ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicBuffers
;
126 this->Const
.MaxTessEvaluationAtomicCounterBuffers
=
127 ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicBuffers
;
128 this->Const
.MaxGeometryAtomicCounterBuffers
=
129 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
;
130 this->Const
.MaxFragmentAtomicCounterBuffers
=
131 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
;
132 this->Const
.MaxCombinedAtomicCounterBuffers
=
133 ctx
->Const
.MaxCombinedAtomicBuffers
;
134 this->Const
.MaxAtomicCounterBufferSize
=
135 ctx
->Const
.MaxAtomicBufferSize
;
137 /* Compute shader constants */
138 for (unsigned i
= 0; i
< ARRAY_SIZE(this->Const
.MaxComputeWorkGroupCount
); i
++)
139 this->Const
.MaxComputeWorkGroupCount
[i
] = ctx
->Const
.MaxComputeWorkGroupCount
[i
];
140 for (unsigned i
= 0; i
< ARRAY_SIZE(this->Const
.MaxComputeWorkGroupSize
); i
++)
141 this->Const
.MaxComputeWorkGroupSize
[i
] = ctx
->Const
.MaxComputeWorkGroupSize
[i
];
143 this->Const
.MaxImageUnits
= ctx
->Const
.MaxImageUnits
;
144 this->Const
.MaxCombinedImageUnitsAndFragmentOutputs
= ctx
->Const
.MaxCombinedImageUnitsAndFragmentOutputs
;
145 this->Const
.MaxImageSamples
= ctx
->Const
.MaxImageSamples
;
146 this->Const
.MaxVertexImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxImageUniforms
;
147 this->Const
.MaxTessControlImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxImageUniforms
;
148 this->Const
.MaxTessEvaluationImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxImageUniforms
;
149 this->Const
.MaxGeometryImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxImageUniforms
;
150 this->Const
.MaxFragmentImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxImageUniforms
;
151 this->Const
.MaxCombinedImageUniforms
= ctx
->Const
.MaxCombinedImageUniforms
;
153 /* ARB_viewport_array */
154 this->Const
.MaxViewports
= ctx
->Const
.MaxViewports
;
156 /* tessellation shader constants */
157 this->Const
.MaxPatchVertices
= ctx
->Const
.MaxPatchVertices
;
158 this->Const
.MaxTessGenLevel
= ctx
->Const
.MaxTessGenLevel
;
159 this->Const
.MaxTessControlInputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxInputComponents
;
160 this->Const
.MaxTessControlOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxOutputComponents
;
161 this->Const
.MaxTessControlTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxTextureImageUnits
;
162 this->Const
.MaxTessEvaluationInputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxInputComponents
;
163 this->Const
.MaxTessEvaluationOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxOutputComponents
;
164 this->Const
.MaxTessEvaluationTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxTextureImageUnits
;
165 this->Const
.MaxTessPatchComponents
= ctx
->Const
.MaxTessPatchComponents
;
166 this->Const
.MaxTessControlTotalOutputComponents
= ctx
->Const
.MaxTessControlTotalOutputComponents
;
167 this->Const
.MaxTessControlUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxUniformComponents
;
168 this->Const
.MaxTessEvaluationUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxUniformComponents
;
170 this->current_function
= NULL
;
171 this->toplevel_ir
= NULL
;
172 this->found_return
= false;
173 this->all_invariant
= false;
174 this->user_structures
= NULL
;
175 this->num_user_structures
= 0;
177 /* supported_versions should be large enough to support the known desktop
178 * GLSL versions plus 3 GLES versions (ES 1.00, ES 3.00, and ES 3.10))
180 STATIC_ASSERT((ARRAY_SIZE(known_desktop_glsl_versions
) + 3) ==
181 ARRAY_SIZE(this->supported_versions
));
183 /* Populate the list of supported GLSL versions */
184 /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or
185 * the OpenGL 3.2 Core context is supported, this logic will need
186 * change. Older versions of GLSL are no longer supported
187 * outside the compatibility contexts of 3.x.
189 this->num_supported_versions
= 0;
190 if (_mesa_is_desktop_gl(ctx
)) {
191 for (unsigned i
= 0; i
< ARRAY_SIZE(known_desktop_glsl_versions
); i
++) {
192 if (known_desktop_glsl_versions
[i
] <= ctx
->Const
.GLSLVersion
) {
193 this->supported_versions
[this->num_supported_versions
].ver
194 = known_desktop_glsl_versions
[i
];
195 this->supported_versions
[this->num_supported_versions
].es
= false;
196 this->num_supported_versions
++;
200 if (ctx
->API
== API_OPENGLES2
|| ctx
->Extensions
.ARB_ES2_compatibility
) {
201 this->supported_versions
[this->num_supported_versions
].ver
= 100;
202 this->supported_versions
[this->num_supported_versions
].es
= true;
203 this->num_supported_versions
++;
205 if (_mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_ES3_compatibility
) {
206 this->supported_versions
[this->num_supported_versions
].ver
= 300;
207 this->supported_versions
[this->num_supported_versions
].es
= true;
208 this->num_supported_versions
++;
210 if (_mesa_is_gles31(ctx
)) {
211 this->supported_versions
[this->num_supported_versions
].ver
= 310;
212 this->supported_versions
[this->num_supported_versions
].es
= true;
213 this->num_supported_versions
++;
216 /* Create a string for use in error messages to tell the user which GLSL
217 * versions are supported.
219 char *supported
= ralloc_strdup(this, "");
220 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
221 unsigned ver
= this->supported_versions
[i
].ver
;
222 const char *const prefix
= (i
== 0)
224 : ((i
== this->num_supported_versions
- 1) ? ", and " : ", ");
225 const char *const suffix
= (this->supported_versions
[i
].es
) ? " ES" : "";
227 ralloc_asprintf_append(& supported
, "%s%u.%02u%s",
229 ver
/ 100, ver
% 100,
233 this->supported_version_string
= supported
;
235 if (ctx
->Const
.ForceGLSLExtensionsWarn
)
236 _mesa_glsl_process_extension("all", NULL
, "warn", NULL
, this);
238 this->default_uniform_qualifier
= new(this) ast_type_qualifier();
239 this->default_uniform_qualifier
->flags
.q
.shared
= 1;
240 this->default_uniform_qualifier
->flags
.q
.column_major
= 1;
242 this->fs_uses_gl_fragcoord
= false;
243 this->fs_redeclares_gl_fragcoord
= false;
244 this->fs_origin_upper_left
= false;
245 this->fs_pixel_center_integer
= false;
246 this->fs_redeclares_gl_fragcoord_with_no_layout_qualifiers
= false;
248 this->gs_input_prim_type_specified
= false;
249 this->tcs_output_vertices_specified
= false;
250 this->gs_input_size
= 0;
251 this->in_qualifier
= new(this) ast_type_qualifier();
252 this->out_qualifier
= new(this) ast_type_qualifier();
253 this->fs_early_fragment_tests
= false;
254 memset(this->atomic_counter_offsets
, 0,
255 sizeof(this->atomic_counter_offsets
));
256 this->allow_extension_directive_midshader
=
257 ctx
->Const
.AllowGLSLExtensionDirectiveMidShader
;
261 * Determine whether the current GLSL version is sufficiently high to support
262 * a certain feature, and generate an error message if it isn't.
264 * \param required_glsl_version and \c required_glsl_es_version are
265 * interpreted as they are in _mesa_glsl_parse_state::is_version().
267 * \param locp is the parser location where the error should be reported.
269 * \param fmt (and additional arguments) constitute a printf-style error
270 * message to report if the version check fails. Information about the
271 * current and required GLSL versions will be appended. So, for example, if
272 * the GLSL version being compiled is 1.20, and check_version(130, 300, locp,
273 * "foo unsupported") is called, the error message will be "foo unsupported in
274 * GLSL 1.20 (GLSL 1.30 or GLSL 3.00 ES required)".
277 _mesa_glsl_parse_state::check_version(unsigned required_glsl_version
,
278 unsigned required_glsl_es_version
,
279 YYLTYPE
*locp
, const char *fmt
, ...)
281 if (this->is_version(required_glsl_version
, required_glsl_es_version
))
286 char *problem
= ralloc_vasprintf(this, fmt
, args
);
288 const char *glsl_version_string
289 = glsl_compute_version_string(this, false, required_glsl_version
);
290 const char *glsl_es_version_string
291 = glsl_compute_version_string(this, true, required_glsl_es_version
);
292 const char *requirement_string
= "";
293 if (required_glsl_version
&& required_glsl_es_version
) {
294 requirement_string
= ralloc_asprintf(this, " (%s or %s required)",
296 glsl_es_version_string
);
297 } else if (required_glsl_version
) {
298 requirement_string
= ralloc_asprintf(this, " (%s required)",
299 glsl_version_string
);
300 } else if (required_glsl_es_version
) {
301 requirement_string
= ralloc_asprintf(this, " (%s required)",
302 glsl_es_version_string
);
304 _mesa_glsl_error(locp
, this, "%s in %s%s",
305 problem
, this->get_version_string(),
312 * Process a GLSL #version directive.
314 * \param version is the integer that follows the #version token.
316 * \param ident is a string identifier that follows the integer, if any is
317 * present. Otherwise NULL.
320 _mesa_glsl_parse_state::process_version_directive(YYLTYPE
*locp
, int version
,
323 bool es_token_present
= false;
325 if (strcmp(ident
, "es") == 0) {
326 es_token_present
= true;
327 } else if (version
>= 150) {
328 if (strcmp(ident
, "core") == 0) {
329 /* Accept the token. There's no need to record that this is
330 * a core profile shader since that's the only profile we support.
332 } else if (strcmp(ident
, "compatibility") == 0) {
333 _mesa_glsl_error(locp
, this,
334 "the compatibility profile is not supported");
336 _mesa_glsl_error(locp
, this,
337 "\"%s\" is not a valid shading language profile; "
338 "if present, it must be \"core\"", ident
);
341 _mesa_glsl_error(locp
, this,
342 "illegal text following version number");
346 this->es_shader
= es_token_present
;
347 if (version
== 100) {
348 if (es_token_present
) {
349 _mesa_glsl_error(locp
, this,
350 "GLSL 1.00 ES should be selected using "
353 this->es_shader
= true;
357 if (this->es_shader
) {
358 this->ARB_texture_rectangle_enable
= false;
361 if (this->forced_language_version
)
362 this->language_version
= this->forced_language_version
;
364 this->language_version
= version
;
366 bool supported
= false;
367 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
368 if (this->supported_versions
[i
].ver
== this->language_version
369 && this->supported_versions
[i
].es
== this->es_shader
) {
376 _mesa_glsl_error(locp
, this, "%s is not supported. "
377 "Supported versions are: %s",
378 this->get_version_string(),
379 this->supported_version_string
);
381 /* On exit, the language_version must be set to a valid value.
382 * Later calls to _mesa_glsl_initialize_types will misbehave if
383 * the version is invalid.
385 switch (this->ctx
->API
) {
386 case API_OPENGL_COMPAT
:
387 case API_OPENGL_CORE
:
388 this->language_version
= this->ctx
->Const
.GLSLVersion
;
392 assert(!"Should not get here.");
396 this->language_version
= 100;
404 * Translate a gl_shader_stage to a short shader stage name for debug
405 * printouts and error messages.
408 _mesa_shader_stage_to_string(unsigned stage
)
411 case MESA_SHADER_VERTEX
: return "vertex";
412 case MESA_SHADER_FRAGMENT
: return "fragment";
413 case MESA_SHADER_GEOMETRY
: return "geometry";
414 case MESA_SHADER_COMPUTE
: return "compute";
415 case MESA_SHADER_TESS_CTRL
: return "tess ctrl";
416 case MESA_SHADER_TESS_EVAL
: return "tess eval";
419 unreachable("Unknown shader stage.");
423 * Translate a gl_shader_stage to a shader stage abbreviation (VS, GS, FS)
424 * for debug printouts and error messages.
427 _mesa_shader_stage_to_abbrev(unsigned stage
)
430 case MESA_SHADER_VERTEX
: return "VS";
431 case MESA_SHADER_FRAGMENT
: return "FS";
432 case MESA_SHADER_GEOMETRY
: return "GS";
433 case MESA_SHADER_COMPUTE
: return "CS";
434 case MESA_SHADER_TESS_CTRL
: return "TCS";
435 case MESA_SHADER_TESS_EVAL
: return "TES";
438 unreachable("Unknown shader stage.");
441 /* This helper function will append the given message to the shader's
442 info log and report it via GL_ARB_debug_output. Per that extension,
443 'type' is one of the enum values classifying the message, and
444 'id' is the implementation-defined ID of the given message. */
446 _mesa_glsl_msg(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
447 GLenum type
, const char *fmt
, va_list ap
)
449 bool error
= (type
== MESA_DEBUG_TYPE_ERROR
);
452 assert(state
->info_log
!= NULL
);
454 /* Get the offset that the new message will be written to. */
455 int msg_offset
= strlen(state
->info_log
);
457 ralloc_asprintf_append(&state
->info_log
, "%u:%u(%u): %s: ",
461 error
? "error" : "warning");
462 ralloc_vasprintf_append(&state
->info_log
, fmt
, ap
);
464 const char *const msg
= &state
->info_log
[msg_offset
];
465 struct gl_context
*ctx
= state
->ctx
;
467 /* Report the error via GL_ARB_debug_output. */
468 _mesa_shader_debug(ctx
, type
, &msg_id
, msg
, strlen(msg
));
470 ralloc_strcat(&state
->info_log
, "\n");
474 _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
475 const char *fmt
, ...)
482 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_ERROR
, fmt
, ap
);
488 _mesa_glsl_warning(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
489 const char *fmt
, ...)
494 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_OTHER
, fmt
, ap
);
500 * Enum representing the possible behaviors that can be specified in
501 * an #extension directive.
511 * Element type for _mesa_glsl_supported_extensions
513 struct _mesa_glsl_extension
{
515 * Name of the extension when referred to in a GLSL extension
520 /** True if this extension is available to desktop GL shaders */
523 /** True if this extension is available to GLES shaders */
527 * Flag in the gl_extensions struct indicating whether this
528 * extension is supported by the driver, or
529 * &gl_extensions::dummy_true if supported by all drivers.
531 * Note: the type (GLboolean gl_extensions::*) is a "pointer to
532 * member" type, the type-safe alternative to the "offsetof" macro.
535 * - foo bar::* p declares p to be an "offset" to a field of type
536 * foo that exists within struct bar
537 * - &bar::baz computes the "offset" of field baz within struct bar
538 * - x.*p accesses the field of x that exists at "offset" p
539 * - x->*p is equivalent to (*x).*p
541 const GLboolean
gl_extensions::* supported_flag
;
544 * Flag in the _mesa_glsl_parse_state struct that should be set
545 * when this extension is enabled.
547 * See note in _mesa_glsl_extension::supported_flag about "pointer
550 bool _mesa_glsl_parse_state::* enable_flag
;
553 * Flag in the _mesa_glsl_parse_state struct that should be set
554 * when the shader requests "warn" behavior for this extension.
556 * See note in _mesa_glsl_extension::supported_flag about "pointer
559 bool _mesa_glsl_parse_state::* warn_flag
;
562 bool compatible_with_state(const _mesa_glsl_parse_state
*state
) const;
563 void set_flags(_mesa_glsl_parse_state
*state
, ext_behavior behavior
) const;
566 #define EXT(NAME, GL, ES, SUPPORTED_FLAG) \
567 { "GL_" #NAME, GL, ES, &gl_extensions::SUPPORTED_FLAG, \
568 &_mesa_glsl_parse_state::NAME##_enable, \
569 &_mesa_glsl_parse_state::NAME##_warn }
572 * Table of extensions that can be enabled/disabled within a shader,
573 * and the conditions under which they are supported.
575 static const _mesa_glsl_extension _mesa_glsl_supported_extensions
[] = {
576 /* API availability */
577 /* name GL ES supported flag */
579 /* ARB extensions go here, sorted alphabetically.
581 EXT(ARB_arrays_of_arrays
, true, false, ARB_arrays_of_arrays
),
582 EXT(ARB_compute_shader
, true, false, ARB_compute_shader
),
583 EXT(ARB_conservative_depth
, true, false, ARB_conservative_depth
),
584 EXT(ARB_derivative_control
, true, false, ARB_derivative_control
),
585 EXT(ARB_draw_buffers
, true, false, dummy_true
),
586 EXT(ARB_draw_instanced
, true, false, ARB_draw_instanced
),
587 EXT(ARB_explicit_attrib_location
, true, false, ARB_explicit_attrib_location
),
588 EXT(ARB_explicit_uniform_location
, true, false, ARB_explicit_uniform_location
),
589 EXT(ARB_fragment_coord_conventions
, true, false, ARB_fragment_coord_conventions
),
590 EXT(ARB_fragment_layer_viewport
, true, false, ARB_fragment_layer_viewport
),
591 EXT(ARB_gpu_shader5
, true, false, ARB_gpu_shader5
),
592 EXT(ARB_gpu_shader_fp64
, true, false, ARB_gpu_shader_fp64
),
593 EXT(ARB_sample_shading
, true, false, ARB_sample_shading
),
594 EXT(ARB_separate_shader_objects
, true, false, dummy_true
),
595 EXT(ARB_shader_atomic_counters
, true, false, ARB_shader_atomic_counters
),
596 EXT(ARB_shader_bit_encoding
, true, false, ARB_shader_bit_encoding
),
597 EXT(ARB_shader_image_load_store
, true, false, ARB_shader_image_load_store
),
598 EXT(ARB_shader_precision
, true, false, ARB_shader_precision
),
599 EXT(ARB_shader_stencil_export
, true, false, ARB_shader_stencil_export
),
600 EXT(ARB_shader_storage_buffer_object
, true, false, ARB_shader_storage_buffer_object
),
601 EXT(ARB_shader_texture_lod
, true, false, ARB_shader_texture_lod
),
602 EXT(ARB_shading_language_420pack
, true, false, ARB_shading_language_420pack
),
603 EXT(ARB_shading_language_packing
, true, false, ARB_shading_language_packing
),
604 EXT(ARB_tessellation_shader
, true, false, ARB_tessellation_shader
),
605 EXT(ARB_texture_cube_map_array
, true, false, ARB_texture_cube_map_array
),
606 EXT(ARB_texture_gather
, true, false, ARB_texture_gather
),
607 EXT(ARB_texture_multisample
, true, false, ARB_texture_multisample
),
608 EXT(ARB_texture_query_levels
, true, false, ARB_texture_query_levels
),
609 EXT(ARB_texture_query_lod
, true, false, ARB_texture_query_lod
),
610 EXT(ARB_texture_rectangle
, true, false, dummy_true
),
611 EXT(ARB_uniform_buffer_object
, true, false, ARB_uniform_buffer_object
),
612 EXT(ARB_vertex_attrib_64bit
, true, false, ARB_vertex_attrib_64bit
),
613 EXT(ARB_viewport_array
, true, false, ARB_viewport_array
),
615 /* KHR extensions go here, sorted alphabetically.
618 /* OES extensions go here, sorted alphabetically.
620 EXT(OES_EGL_image_external
, false, true, OES_EGL_image_external
),
621 EXT(OES_standard_derivatives
, false, true, OES_standard_derivatives
),
622 EXT(OES_texture_3D
, false, true, EXT_texture3D
),
624 /* All other extensions go here, sorted alphabetically.
626 EXT(AMD_conservative_depth
, true, false, ARB_conservative_depth
),
627 EXT(AMD_shader_stencil_export
, true, false, ARB_shader_stencil_export
),
628 EXT(AMD_shader_trinary_minmax
, true, false, dummy_true
),
629 EXT(AMD_vertex_shader_layer
, true, false, AMD_vertex_shader_layer
),
630 EXT(AMD_vertex_shader_viewport_index
, true, false, AMD_vertex_shader_viewport_index
),
631 EXT(EXT_draw_buffers
, false, true, dummy_true
),
632 EXT(EXT_separate_shader_objects
, false, true, dummy_true
),
633 EXT(EXT_shader_integer_mix
, true, true, EXT_shader_integer_mix
),
634 EXT(EXT_texture_array
, true, false, EXT_texture_array
),
641 * Determine whether a given extension is compatible with the target,
642 * API, and extension information in the current parser state.
644 bool _mesa_glsl_extension::compatible_with_state(const _mesa_glsl_parse_state
*
647 /* Check that this extension matches whether we are compiling
648 * for desktop GL or GLES.
650 if (state
->es_shader
) {
651 if (!this->avail_in_ES
) return false;
653 if (!this->avail_in_GL
) return false;
656 /* Check that this extension is supported by the OpenGL
659 * Note: the ->* operator indexes into state->extensions by the
660 * offset this->supported_flag. See
661 * _mesa_glsl_extension::supported_flag for more info.
663 return state
->extensions
->*(this->supported_flag
);
667 * Set the appropriate flags in the parser state to establish the
668 * given behavior for this extension.
670 void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state
*state
,
671 ext_behavior behavior
) const
673 /* Note: the ->* operator indexes into state by the
674 * offsets this->enable_flag and this->warn_flag. See
675 * _mesa_glsl_extension::supported_flag for more info.
677 state
->*(this->enable_flag
) = (behavior
!= extension_disable
);
678 state
->*(this->warn_flag
) = (behavior
== extension_warn
);
682 * Find an extension by name in _mesa_glsl_supported_extensions. If
683 * the name is not found, return NULL.
685 static const _mesa_glsl_extension
*find_extension(const char *name
)
687 for (unsigned i
= 0; i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
688 if (strcmp(name
, _mesa_glsl_supported_extensions
[i
].name
) == 0) {
689 return &_mesa_glsl_supported_extensions
[i
];
697 _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
698 const char *behavior_string
, YYLTYPE
*behavior_locp
,
699 _mesa_glsl_parse_state
*state
)
701 ext_behavior behavior
;
702 if (strcmp(behavior_string
, "warn") == 0) {
703 behavior
= extension_warn
;
704 } else if (strcmp(behavior_string
, "require") == 0) {
705 behavior
= extension_require
;
706 } else if (strcmp(behavior_string
, "enable") == 0) {
707 behavior
= extension_enable
;
708 } else if (strcmp(behavior_string
, "disable") == 0) {
709 behavior
= extension_disable
;
711 _mesa_glsl_error(behavior_locp
, state
,
712 "unknown extension behavior `%s'",
717 if (strcmp(name
, "all") == 0) {
718 if ((behavior
== extension_enable
) || (behavior
== extension_require
)) {
719 _mesa_glsl_error(name_locp
, state
, "cannot %s all extensions",
720 (behavior
== extension_enable
)
721 ? "enable" : "require");
725 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
726 const _mesa_glsl_extension
*extension
727 = &_mesa_glsl_supported_extensions
[i
];
728 if (extension
->compatible_with_state(state
)) {
729 _mesa_glsl_supported_extensions
[i
].set_flags(state
, behavior
);
734 const _mesa_glsl_extension
*extension
= find_extension(name
);
735 if (extension
&& extension
->compatible_with_state(state
)) {
736 extension
->set_flags(state
, behavior
);
738 static const char fmt
[] = "extension `%s' unsupported in %s shader";
740 if (behavior
== extension_require
) {
741 _mesa_glsl_error(name_locp
, state
, fmt
,
742 name
, _mesa_shader_stage_to_string(state
->stage
));
745 _mesa_glsl_warning(name_locp
, state
, fmt
,
746 name
, _mesa_shader_stage_to_string(state
->stage
));
756 * Recurses through <type> and <expr> if <expr> is an aggregate initializer
757 * and sets <expr>'s <constructor_type> field to <type>. Gives later functions
758 * (process_array_constructor, et al) sufficient information to do type
761 * Operates on assignments involving an aggregate initializer. E.g.,
763 * vec4 pos = {1.0, -1.0, 0.0, 1.0};
765 * or more ridiculously,
778 * {1.0, 2.0, 3.0, 4.0}, // a[0].v[0]
779 * {5.0, 6.0, 7.0, 8.0} // a[0].v[1]
784 * {1.0, 2.0, 3.0, 4.0}, // a[1].v[0]
785 * {5.0, 6.0, 7.0, 8.0} // a[1].v[1]
791 * {1.0, 2.0, 3.0, 4.0}, // b.v[0]
792 * {5.0, 6.0, 7.0, 8.0} // b.v[1]
798 * This pass is necessary because the right-hand side of <type> e = { ... }
799 * doesn't contain sufficient information to determine if the types match.
802 _mesa_ast_set_aggregate_type(const glsl_type
*type
,
803 ast_expression
*expr
)
805 ast_aggregate_initializer
*ai
= (ast_aggregate_initializer
*)expr
;
806 ai
->constructor_type
= type
;
808 /* If the aggregate is an array, recursively set its elements' types. */
809 if (type
->is_array()) {
810 /* Each array element has the type type->fields.array.
812 * E.g., if <type> if struct S[2] we want to set each element's type to
815 for (exec_node
*expr_node
= ai
->expressions
.head
;
816 !expr_node
->is_tail_sentinel();
817 expr_node
= expr_node
->next
) {
818 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
821 if (expr
->oper
== ast_aggregate
)
822 _mesa_ast_set_aggregate_type(type
->fields
.array
, expr
);
825 /* If the aggregate is a struct, recursively set its fields' types. */
826 } else if (type
->is_record()) {
827 exec_node
*expr_node
= ai
->expressions
.head
;
829 /* Iterate through the struct's fields. */
830 for (unsigned i
= 0; !expr_node
->is_tail_sentinel() && i
< type
->length
;
831 i
++, expr_node
= expr_node
->next
) {
832 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
835 if (expr
->oper
== ast_aggregate
) {
836 _mesa_ast_set_aggregate_type(type
->fields
.structure
[i
].type
, expr
);
839 /* If the aggregate is a matrix, set its columns' types. */
840 } else if (type
->is_matrix()) {
841 for (exec_node
*expr_node
= ai
->expressions
.head
;
842 !expr_node
->is_tail_sentinel();
843 expr_node
= expr_node
->next
) {
844 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
847 if (expr
->oper
== ast_aggregate
)
848 _mesa_ast_set_aggregate_type(type
->column_type(), expr
);
855 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier
*q
)
857 if (q
->flags
.q
.constant
)
860 if (q
->flags
.q
.invariant
)
861 printf("invariant ");
863 if (q
->flags
.q
.attribute
)
864 printf("attribute ");
866 if (q
->flags
.q
.varying
)
869 if (q
->flags
.q
.in
&& q
->flags
.q
.out
)
879 if (q
->flags
.q
.centroid
)
881 if (q
->flags
.q
.sample
)
883 if (q
->flags
.q
.patch
)
885 if (q
->flags
.q
.uniform
)
887 if (q
->flags
.q
.buffer
)
889 if (q
->flags
.q
.smooth
)
893 if (q
->flags
.q
.noperspective
)
894 printf("noperspective ");
899 ast_node::print(void) const
901 printf("unhandled node ");
905 ast_node::ast_node(void)
907 this->location
.source
= 0;
908 this->location
.first_line
= 0;
909 this->location
.first_column
= 0;
910 this->location
.last_line
= 0;
911 this->location
.last_column
= 0;
916 ast_opt_array_dimensions_print(const ast_array_specifier
*array_specifier
)
919 array_specifier
->print();
924 ast_compound_statement::print(void) const
928 foreach_list_typed(ast_node
, ast
, link
, &this->statements
) {
936 ast_compound_statement::ast_compound_statement(int new_scope
,
937 ast_node
*statements
)
939 this->new_scope
= new_scope
;
941 if (statements
!= NULL
) {
942 this->statements
.push_degenerate_list_at_head(&statements
->link
);
948 ast_expression::print(void) const
962 subexpressions
[0]->print();
963 printf("%s ", operator_string(oper
));
964 subexpressions
[1]->print();
967 case ast_field_selection
:
968 subexpressions
[0]->print();
969 printf(". %s ", primary_expression
.identifier
);
978 printf("%s ", operator_string(oper
));
979 subexpressions
[0]->print();
984 subexpressions
[0]->print();
985 printf("%s ", operator_string(oper
));
988 case ast_conditional
:
989 subexpressions
[0]->print();
991 subexpressions
[1]->print();
993 subexpressions
[2]->print();
996 case ast_array_index
:
997 subexpressions
[0]->print();
999 subexpressions
[1]->print();
1003 case ast_function_call
: {
1004 subexpressions
[0]->print();
1007 foreach_list_typed (ast_node
, ast
, link
, &this->expressions
) {
1008 if (&ast
->link
!= this->expressions
.get_head())
1018 case ast_identifier
:
1019 printf("%s ", primary_expression
.identifier
);
1022 case ast_int_constant
:
1023 printf("%d ", primary_expression
.int_constant
);
1026 case ast_uint_constant
:
1027 printf("%u ", primary_expression
.uint_constant
);
1030 case ast_float_constant
:
1031 printf("%f ", primary_expression
.float_constant
);
1034 case ast_double_constant
:
1035 printf("%f ", primary_expression
.double_constant
);
1038 case ast_bool_constant
:
1040 primary_expression
.bool_constant
1041 ? "true" : "false");
1044 case ast_sequence
: {
1046 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1047 if (&ast
->link
!= this->expressions
.get_head())
1056 case ast_aggregate
: {
1058 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1059 if (&ast
->link
!= this->expressions
.get_head())
1074 ast_expression::ast_expression(int oper
,
1075 ast_expression
*ex0
,
1076 ast_expression
*ex1
,
1077 ast_expression
*ex2
) :
1078 primary_expression()
1080 this->oper
= ast_operators(oper
);
1081 this->subexpressions
[0] = ex0
;
1082 this->subexpressions
[1] = ex1
;
1083 this->subexpressions
[2] = ex2
;
1084 this->non_lvalue_description
= NULL
;
1089 ast_expression_statement::print(void) const
1092 expression
->print();
1098 ast_expression_statement::ast_expression_statement(ast_expression
*ex
) :
1106 ast_function::print(void) const
1108 return_type
->print();
1109 printf(" %s (", identifier
);
1111 foreach_list_typed(ast_node
, ast
, link
, & this->parameters
) {
1119 ast_function::ast_function(void)
1120 : return_type(NULL
), identifier(NULL
), is_definition(false),
1128 ast_fully_specified_type::print(void) const
1130 _mesa_ast_type_qualifier_print(& qualifier
);
1136 ast_parameter_declarator::print(void) const
1140 printf("%s ", identifier
);
1141 ast_opt_array_dimensions_print(array_specifier
);
1146 ast_function_definition::print(void) const
1154 ast_declaration::print(void) const
1156 printf("%s ", identifier
);
1157 ast_opt_array_dimensions_print(array_specifier
);
1161 initializer
->print();
1166 ast_declaration::ast_declaration(const char *identifier
,
1167 ast_array_specifier
*array_specifier
,
1168 ast_expression
*initializer
)
1170 this->identifier
= identifier
;
1171 this->array_specifier
= array_specifier
;
1172 this->initializer
= initializer
;
1177 ast_declarator_list::print(void) const
1179 assert(type
|| invariant
);
1184 printf("invariant ");
1188 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1189 if (&ast
->link
!= this->declarations
.get_head())
1199 ast_declarator_list::ast_declarator_list(ast_fully_specified_type
*type
)
1202 this->invariant
= false;
1203 this->precise
= false;
1207 ast_jump_statement::print(void) const
1211 printf("continue; ");
1218 if (opt_return_value
)
1219 opt_return_value
->print();
1224 printf("discard; ");
1230 ast_jump_statement::ast_jump_statement(int mode
, ast_expression
*return_value
)
1231 : opt_return_value(NULL
)
1233 this->mode
= ast_jump_modes(mode
);
1235 if (mode
== ast_return
)
1236 opt_return_value
= return_value
;
1241 ast_selection_statement::print(void) const
1247 then_statement
->print();
1249 if (else_statement
) {
1251 else_statement
->print();
1257 ast_selection_statement::ast_selection_statement(ast_expression
*condition
,
1258 ast_node
*then_statement
,
1259 ast_node
*else_statement
)
1261 this->condition
= condition
;
1262 this->then_statement
= then_statement
;
1263 this->else_statement
= else_statement
;
1268 ast_switch_statement::print(void) const
1270 printf("switch ( ");
1271 test_expression
->print();
1278 ast_switch_statement::ast_switch_statement(ast_expression
*test_expression
,
1281 this->test_expression
= test_expression
;
1287 ast_switch_body::print(void) const
1290 if (stmts
!= NULL
) {
1297 ast_switch_body::ast_switch_body(ast_case_statement_list
*stmts
)
1299 this->stmts
= stmts
;
1303 void ast_case_label::print(void) const
1305 if (test_value
!= NULL
) {
1307 test_value
->print();
1310 printf("default: ");
1315 ast_case_label::ast_case_label(ast_expression
*test_value
)
1317 this->test_value
= test_value
;
1321 void ast_case_label_list::print(void) const
1323 foreach_list_typed(ast_node
, ast
, link
, & this->labels
) {
1330 ast_case_label_list::ast_case_label_list(void)
1335 void ast_case_statement::print(void) const
1338 foreach_list_typed(ast_node
, ast
, link
, & this->stmts
) {
1345 ast_case_statement::ast_case_statement(ast_case_label_list
*labels
)
1347 this->labels
= labels
;
1351 void ast_case_statement_list::print(void) const
1353 foreach_list_typed(ast_node
, ast
, link
, & this->cases
) {
1359 ast_case_statement_list::ast_case_statement_list(void)
1365 ast_iteration_statement::print(void) const
1371 init_statement
->print();
1378 if (rest_expression
)
1379 rest_expression
->print();
1405 ast_iteration_statement::ast_iteration_statement(int mode
,
1407 ast_node
*condition
,
1408 ast_expression
*rest_expression
,
1411 this->mode
= ast_iteration_modes(mode
);
1412 this->init_statement
= init
;
1413 this->condition
= condition
;
1414 this->rest_expression
= rest_expression
;
1420 ast_struct_specifier::print(void) const
1422 printf("struct %s { ", name
);
1423 foreach_list_typed(ast_node
, ast
, link
, &this->declarations
) {
1430 ast_struct_specifier::ast_struct_specifier(const char *identifier
,
1431 ast_declarator_list
*declarator_list
)
1433 if (identifier
== NULL
) {
1434 static mtx_t mutex
= _MTX_INITIALIZER_NP
;
1435 static unsigned anon_count
= 1;
1439 count
= anon_count
++;
1442 identifier
= ralloc_asprintf(this, "#anon_struct_%04x", count
);
1445 this->declarations
.push_degenerate_list_at_head(&declarator_list
->link
);
1446 is_declaration
= true;
1450 set_shader_inout_layout(struct gl_shader
*shader
,
1451 struct _mesa_glsl_parse_state
*state
)
1453 /* Should have been prevented by the parser. */
1454 if (shader
->Stage
== MESA_SHADER_TESS_CTRL
) {
1455 assert(!state
->in_qualifier
->flags
.i
);
1456 } else if (shader
->Stage
== MESA_SHADER_TESS_EVAL
) {
1457 assert(!state
->out_qualifier
->flags
.i
);
1458 } else if (shader
->Stage
!= MESA_SHADER_GEOMETRY
) {
1459 assert(!state
->in_qualifier
->flags
.i
);
1460 assert(!state
->out_qualifier
->flags
.i
);
1463 if (shader
->Stage
!= MESA_SHADER_COMPUTE
) {
1464 /* Should have been prevented by the parser. */
1465 assert(!state
->cs_input_local_size_specified
);
1468 if (shader
->Stage
!= MESA_SHADER_FRAGMENT
) {
1469 /* Should have been prevented by the parser. */
1470 assert(!state
->fs_uses_gl_fragcoord
);
1471 assert(!state
->fs_redeclares_gl_fragcoord
);
1472 assert(!state
->fs_pixel_center_integer
);
1473 assert(!state
->fs_origin_upper_left
);
1474 assert(!state
->fs_early_fragment_tests
);
1477 switch (shader
->Stage
) {
1478 case MESA_SHADER_TESS_CTRL
:
1479 shader
->TessCtrl
.VerticesOut
= 0;
1480 if (state
->tcs_output_vertices_specified
)
1481 shader
->TessCtrl
.VerticesOut
= state
->out_qualifier
->vertices
;
1483 case MESA_SHADER_TESS_EVAL
:
1484 shader
->TessEval
.PrimitiveMode
= PRIM_UNKNOWN
;
1485 if (state
->in_qualifier
->flags
.q
.prim_type
)
1486 shader
->TessEval
.PrimitiveMode
= state
->in_qualifier
->prim_type
;
1488 shader
->TessEval
.Spacing
= 0;
1489 if (state
->in_qualifier
->flags
.q
.vertex_spacing
)
1490 shader
->TessEval
.Spacing
= state
->in_qualifier
->vertex_spacing
;
1492 shader
->TessEval
.VertexOrder
= 0;
1493 if (state
->in_qualifier
->flags
.q
.ordering
)
1494 shader
->TessEval
.VertexOrder
= state
->in_qualifier
->ordering
;
1496 shader
->TessEval
.PointMode
= -1;
1497 if (state
->in_qualifier
->flags
.q
.point_mode
)
1498 shader
->TessEval
.PointMode
= state
->in_qualifier
->point_mode
;
1500 case MESA_SHADER_GEOMETRY
:
1501 shader
->Geom
.VerticesOut
= 0;
1502 if (state
->out_qualifier
->flags
.q
.max_vertices
)
1503 shader
->Geom
.VerticesOut
= state
->out_qualifier
->max_vertices
;
1505 if (state
->gs_input_prim_type_specified
) {
1506 shader
->Geom
.InputType
= state
->in_qualifier
->prim_type
;
1508 shader
->Geom
.InputType
= PRIM_UNKNOWN
;
1511 if (state
->out_qualifier
->flags
.q
.prim_type
) {
1512 shader
->Geom
.OutputType
= state
->out_qualifier
->prim_type
;
1514 shader
->Geom
.OutputType
= PRIM_UNKNOWN
;
1517 shader
->Geom
.Invocations
= 0;
1518 if (state
->in_qualifier
->flags
.q
.invocations
)
1519 shader
->Geom
.Invocations
= state
->in_qualifier
->invocations
;
1522 case MESA_SHADER_COMPUTE
:
1523 if (state
->cs_input_local_size_specified
) {
1524 for (int i
= 0; i
< 3; i
++)
1525 shader
->Comp
.LocalSize
[i
] = state
->cs_input_local_size
[i
];
1527 for (int i
= 0; i
< 3; i
++)
1528 shader
->Comp
.LocalSize
[i
] = 0;
1532 case MESA_SHADER_FRAGMENT
:
1533 shader
->redeclares_gl_fragcoord
= state
->fs_redeclares_gl_fragcoord
;
1534 shader
->uses_gl_fragcoord
= state
->fs_uses_gl_fragcoord
;
1535 shader
->pixel_center_integer
= state
->fs_pixel_center_integer
;
1536 shader
->origin_upper_left
= state
->fs_origin_upper_left
;
1537 shader
->ARB_fragment_coord_conventions_enable
=
1538 state
->ARB_fragment_coord_conventions_enable
;
1539 shader
->EarlyFragmentTests
= state
->fs_early_fragment_tests
;
1543 /* Nothing to do. */
1551 _mesa_glsl_compile_shader(struct gl_context
*ctx
, struct gl_shader
*shader
,
1552 bool dump_ast
, bool dump_hir
)
1554 struct _mesa_glsl_parse_state
*state
=
1555 new(shader
) _mesa_glsl_parse_state(ctx
, shader
->Stage
, shader
);
1556 const char *source
= shader
->Source
;
1558 if (ctx
->Const
.GenerateTemporaryNames
)
1559 (void) p_atomic_cmpxchg(&ir_variable::temporaries_allocate_names
,
1562 state
->error
= glcpp_preprocess(state
, &source
, &state
->info_log
,
1563 &ctx
->Extensions
, ctx
);
1565 if (!state
->error
) {
1566 _mesa_glsl_lexer_ctor(state
, source
);
1567 _mesa_glsl_parse(state
);
1568 _mesa_glsl_lexer_dtor(state
);
1572 foreach_list_typed(ast_node
, ast
, link
, &state
->translation_unit
) {
1578 ralloc_free(shader
->ir
);
1579 shader
->ir
= new(shader
) exec_list
;
1580 if (!state
->error
&& !state
->translation_unit
.is_empty())
1581 _mesa_ast_to_hir(shader
->ir
, state
);
1583 if (!state
->error
) {
1584 validate_ir_tree(shader
->ir
);
1586 /* Print out the unoptimized IR. */
1588 _mesa_print_ir(stdout
, shader
->ir
, state
);
1593 if (!state
->error
&& !shader
->ir
->is_empty()) {
1594 struct gl_shader_compiler_options
*options
=
1595 &ctx
->Const
.ShaderCompilerOptions
[shader
->Stage
];
1597 /* Do some optimization at compile time to reduce shader IR size
1598 * and reduce later work if the same shader is linked multiple times
1600 while (do_common_optimization(shader
->ir
, false, false, options
,
1601 ctx
->Const
.NativeIntegers
))
1604 validate_ir_tree(shader
->ir
);
1606 enum ir_variable_mode other
;
1607 switch (shader
->Stage
) {
1608 case MESA_SHADER_VERTEX
:
1609 other
= ir_var_shader_in
;
1611 case MESA_SHADER_FRAGMENT
:
1612 other
= ir_var_shader_out
;
1615 /* Something invalid to ensure optimize_dead_builtin_uniforms
1616 * doesn't remove anything other than uniforms or constants.
1618 other
= ir_var_mode_count
;
1622 optimize_dead_builtin_variables(shader
->ir
, other
);
1624 validate_ir_tree(shader
->ir
);
1627 if (shader
->InfoLog
)
1628 ralloc_free(shader
->InfoLog
);
1630 shader
->symbols
= new(shader
->ir
) glsl_symbol_table
;
1631 shader
->CompileStatus
= !state
->error
;
1632 shader
->InfoLog
= state
->info_log
;
1633 shader
->Version
= state
->language_version
;
1634 shader
->IsES
= state
->es_shader
;
1635 shader
->uses_builtin_functions
= state
->uses_builtin_functions
;
1638 set_shader_inout_layout(shader
, state
);
1640 /* Retain any live IR, but trash the rest. */
1641 reparent_ir(shader
->ir
, shader
->ir
);
1643 /* Destroy the symbol table. Create a new symbol table that contains only
1644 * the variables and functions that still exist in the IR. The symbol
1645 * table will be used later during linking.
1647 * There must NOT be any freed objects still referenced by the symbol
1648 * table. That could cause the linker to dereference freed memory.
1650 * We don't have to worry about types or interface-types here because those
1651 * are fly-weights that are looked up by glsl_type.
1653 foreach_in_list (ir_instruction
, ir
, shader
->ir
) {
1654 switch (ir
->ir_type
) {
1655 case ir_type_function
:
1656 shader
->symbols
->add_function((ir_function
*) ir
);
1658 case ir_type_variable
: {
1659 ir_variable
*const var
= (ir_variable
*) ir
;
1661 if (var
->data
.mode
!= ir_var_temporary
)
1662 shader
->symbols
->add_variable(var
);
1670 delete state
->symbols
;
1676 * Do the set of common optimizations passes
1678 * \param ir List of instructions to be optimized
1679 * \param linked Is the shader linked? This enables
1680 * optimizations passes that remove code at
1681 * global scope and could cause linking to
1683 * \param uniform_locations_assigned Have locations already been assigned for
1684 * uniforms? This prevents the declarations
1685 * of unused uniforms from being removed.
1686 * The setting of this flag only matters if
1687 * \c linked is \c true.
1688 * \param max_unroll_iterations Maximum number of loop iterations to be
1689 * unrolled. Setting to 0 disables loop
1691 * \param options The driver's preferred shader options.
1694 do_common_optimization(exec_list
*ir
, bool linked
,
1695 bool uniform_locations_assigned
,
1696 const struct gl_shader_compiler_options
*options
,
1697 bool native_integers
)
1699 GLboolean progress
= GL_FALSE
;
1701 progress
= lower_instructions(ir
, SUB_TO_ADD_NEG
) || progress
;
1704 progress
= do_function_inlining(ir
) || progress
;
1705 progress
= do_dead_functions(ir
) || progress
;
1706 progress
= do_structure_splitting(ir
) || progress
;
1708 progress
= do_if_simplification(ir
) || progress
;
1709 progress
= opt_flatten_nested_if_blocks(ir
) || progress
;
1710 progress
= opt_conditional_discard(ir
) || progress
;
1711 progress
= do_copy_propagation(ir
) || progress
;
1712 progress
= do_copy_propagation_elements(ir
) || progress
;
1714 if (options
->OptimizeForAOS
&& !linked
)
1715 progress
= opt_flip_matrices(ir
) || progress
;
1717 if (linked
&& options
->OptimizeForAOS
) {
1718 progress
= do_vectorize(ir
) || progress
;
1722 progress
= do_dead_code(ir
, uniform_locations_assigned
) || progress
;
1724 progress
= do_dead_code_unlinked(ir
) || progress
;
1725 progress
= do_dead_code_local(ir
) || progress
;
1726 progress
= do_tree_grafting(ir
) || progress
;
1727 progress
= do_constant_propagation(ir
) || progress
;
1729 progress
= do_constant_variable(ir
) || progress
;
1731 progress
= do_constant_variable_unlinked(ir
) || progress
;
1732 progress
= do_constant_folding(ir
) || progress
;
1733 progress
= do_minmax_prune(ir
) || progress
;
1734 progress
= do_cse(ir
) || progress
;
1735 progress
= do_rebalance_tree(ir
) || progress
;
1736 progress
= do_algebraic(ir
, native_integers
, options
) || progress
;
1737 progress
= do_lower_jumps(ir
) || progress
;
1738 progress
= do_vec_index_to_swizzle(ir
) || progress
;
1739 progress
= lower_vector_insert(ir
, false) || progress
;
1740 progress
= do_swizzle_swizzle(ir
) || progress
;
1741 progress
= do_noop_swizzle(ir
) || progress
;
1743 progress
= optimize_split_arrays(ir
, linked
) || progress
;
1744 progress
= optimize_redundant_jumps(ir
) || progress
;
1746 loop_state
*ls
= analyze_loop_variables(ir
);
1747 if (ls
->loop_found
) {
1748 progress
= set_loop_controls(ir
, ls
) || progress
;
1749 progress
= unroll_loops(ir
, ls
, options
) || progress
;
1759 * To be called at GL teardown time, this frees compiler datastructures.
1761 * After calling this, any previously compiled shaders and shader
1762 * programs would be invalid. So this should happen at approximately
1766 _mesa_destroy_shader_compiler(void)
1768 _mesa_destroy_shader_compiler_caches();
1770 _mesa_glsl_release_types();
1774 * Releases compiler caches to trade off performance for memory.
1776 * Intended to be used with glReleaseShaderCompiler().
1779 _mesa_destroy_shader_compiler_caches(void)
1781 _mesa_glsl_release_builtin_functions();