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
.MaxCombinedShaderOutputResources
= ctx
->Const
.MaxCombinedShaderOutputResources
;
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;
176 this->num_subroutines
= 0;
177 this->subroutines
= NULL
;
178 this->num_subroutine_types
= 0;
179 this->subroutine_types
= NULL
;
181 /* supported_versions should be large enough to support the known desktop
182 * GLSL versions plus 3 GLES versions (ES 1.00, ES 3.00, and ES 3.10))
184 STATIC_ASSERT((ARRAY_SIZE(known_desktop_glsl_versions
) + 3) ==
185 ARRAY_SIZE(this->supported_versions
));
187 /* Populate the list of supported GLSL versions */
188 /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or
189 * the OpenGL 3.2 Core context is supported, this logic will need
190 * change. Older versions of GLSL are no longer supported
191 * outside the compatibility contexts of 3.x.
193 this->num_supported_versions
= 0;
194 if (_mesa_is_desktop_gl(ctx
)) {
195 for (unsigned i
= 0; i
< ARRAY_SIZE(known_desktop_glsl_versions
); i
++) {
196 if (known_desktop_glsl_versions
[i
] <= ctx
->Const
.GLSLVersion
) {
197 this->supported_versions
[this->num_supported_versions
].ver
198 = known_desktop_glsl_versions
[i
];
199 this->supported_versions
[this->num_supported_versions
].es
= false;
200 this->num_supported_versions
++;
204 if (ctx
->API
== API_OPENGLES2
|| ctx
->Extensions
.ARB_ES2_compatibility
) {
205 this->supported_versions
[this->num_supported_versions
].ver
= 100;
206 this->supported_versions
[this->num_supported_versions
].es
= true;
207 this->num_supported_versions
++;
209 if (_mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_ES3_compatibility
) {
210 this->supported_versions
[this->num_supported_versions
].ver
= 300;
211 this->supported_versions
[this->num_supported_versions
].es
= true;
212 this->num_supported_versions
++;
214 if (_mesa_is_gles31(ctx
)) {
215 this->supported_versions
[this->num_supported_versions
].ver
= 310;
216 this->supported_versions
[this->num_supported_versions
].es
= true;
217 this->num_supported_versions
++;
220 /* Create a string for use in error messages to tell the user which GLSL
221 * versions are supported.
223 char *supported
= ralloc_strdup(this, "");
224 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
225 unsigned ver
= this->supported_versions
[i
].ver
;
226 const char *const prefix
= (i
== 0)
228 : ((i
== this->num_supported_versions
- 1) ? ", and " : ", ");
229 const char *const suffix
= (this->supported_versions
[i
].es
) ? " ES" : "";
231 ralloc_asprintf_append(& supported
, "%s%u.%02u%s",
233 ver
/ 100, ver
% 100,
237 this->supported_version_string
= supported
;
239 if (ctx
->Const
.ForceGLSLExtensionsWarn
)
240 _mesa_glsl_process_extension("all", NULL
, "warn", NULL
, this);
242 this->default_uniform_qualifier
= new(this) ast_type_qualifier();
243 this->default_uniform_qualifier
->flags
.q
.shared
= 1;
244 this->default_uniform_qualifier
->flags
.q
.column_major
= 1;
246 this->fs_uses_gl_fragcoord
= false;
247 this->fs_redeclares_gl_fragcoord
= false;
248 this->fs_origin_upper_left
= false;
249 this->fs_pixel_center_integer
= false;
250 this->fs_redeclares_gl_fragcoord_with_no_layout_qualifiers
= false;
252 this->gs_input_prim_type_specified
= false;
253 this->tcs_output_vertices_specified
= false;
254 this->gs_input_size
= 0;
255 this->in_qualifier
= new(this) ast_type_qualifier();
256 this->out_qualifier
= new(this) ast_type_qualifier();
257 this->fs_early_fragment_tests
= false;
258 memset(this->atomic_counter_offsets
, 0,
259 sizeof(this->atomic_counter_offsets
));
260 this->allow_extension_directive_midshader
=
261 ctx
->Const
.AllowGLSLExtensionDirectiveMidShader
;
265 * Determine whether the current GLSL version is sufficiently high to support
266 * a certain feature, and generate an error message if it isn't.
268 * \param required_glsl_version and \c required_glsl_es_version are
269 * interpreted as they are in _mesa_glsl_parse_state::is_version().
271 * \param locp is the parser location where the error should be reported.
273 * \param fmt (and additional arguments) constitute a printf-style error
274 * message to report if the version check fails. Information about the
275 * current and required GLSL versions will be appended. So, for example, if
276 * the GLSL version being compiled is 1.20, and check_version(130, 300, locp,
277 * "foo unsupported") is called, the error message will be "foo unsupported in
278 * GLSL 1.20 (GLSL 1.30 or GLSL 3.00 ES required)".
281 _mesa_glsl_parse_state::check_version(unsigned required_glsl_version
,
282 unsigned required_glsl_es_version
,
283 YYLTYPE
*locp
, const char *fmt
, ...)
285 if (this->is_version(required_glsl_version
, required_glsl_es_version
))
290 char *problem
= ralloc_vasprintf(this, fmt
, args
);
292 const char *glsl_version_string
293 = glsl_compute_version_string(this, false, required_glsl_version
);
294 const char *glsl_es_version_string
295 = glsl_compute_version_string(this, true, required_glsl_es_version
);
296 const char *requirement_string
= "";
297 if (required_glsl_version
&& required_glsl_es_version
) {
298 requirement_string
= ralloc_asprintf(this, " (%s or %s required)",
300 glsl_es_version_string
);
301 } else if (required_glsl_version
) {
302 requirement_string
= ralloc_asprintf(this, " (%s required)",
303 glsl_version_string
);
304 } else if (required_glsl_es_version
) {
305 requirement_string
= ralloc_asprintf(this, " (%s required)",
306 glsl_es_version_string
);
308 _mesa_glsl_error(locp
, this, "%s in %s%s",
309 problem
, this->get_version_string(),
316 * Process a GLSL #version directive.
318 * \param version is the integer that follows the #version token.
320 * \param ident is a string identifier that follows the integer, if any is
321 * present. Otherwise NULL.
324 _mesa_glsl_parse_state::process_version_directive(YYLTYPE
*locp
, int version
,
327 bool es_token_present
= false;
329 if (strcmp(ident
, "es") == 0) {
330 es_token_present
= true;
331 } else if (version
>= 150) {
332 if (strcmp(ident
, "core") == 0) {
333 /* Accept the token. There's no need to record that this is
334 * a core profile shader since that's the only profile we support.
336 } else if (strcmp(ident
, "compatibility") == 0) {
337 _mesa_glsl_error(locp
, this,
338 "the compatibility profile is not supported");
340 _mesa_glsl_error(locp
, this,
341 "\"%s\" is not a valid shading language profile; "
342 "if present, it must be \"core\"", ident
);
345 _mesa_glsl_error(locp
, this,
346 "illegal text following version number");
350 this->es_shader
= es_token_present
;
351 if (version
== 100) {
352 if (es_token_present
) {
353 _mesa_glsl_error(locp
, this,
354 "GLSL 1.00 ES should be selected using "
357 this->es_shader
= true;
361 if (this->es_shader
) {
362 this->ARB_texture_rectangle_enable
= false;
365 if (this->forced_language_version
)
366 this->language_version
= this->forced_language_version
;
368 this->language_version
= version
;
370 bool supported
= false;
371 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
372 if (this->supported_versions
[i
].ver
== this->language_version
373 && this->supported_versions
[i
].es
== this->es_shader
) {
380 _mesa_glsl_error(locp
, this, "%s is not supported. "
381 "Supported versions are: %s",
382 this->get_version_string(),
383 this->supported_version_string
);
385 /* On exit, the language_version must be set to a valid value.
386 * Later calls to _mesa_glsl_initialize_types will misbehave if
387 * the version is invalid.
389 switch (this->ctx
->API
) {
390 case API_OPENGL_COMPAT
:
391 case API_OPENGL_CORE
:
392 this->language_version
= this->ctx
->Const
.GLSLVersion
;
396 assert(!"Should not get here.");
400 this->language_version
= 100;
408 * Translate a gl_shader_stage to a short shader stage name for debug
409 * printouts and error messages.
412 _mesa_shader_stage_to_string(unsigned stage
)
415 case MESA_SHADER_VERTEX
: return "vertex";
416 case MESA_SHADER_FRAGMENT
: return "fragment";
417 case MESA_SHADER_GEOMETRY
: return "geometry";
418 case MESA_SHADER_COMPUTE
: return "compute";
419 case MESA_SHADER_TESS_CTRL
: return "tess ctrl";
420 case MESA_SHADER_TESS_EVAL
: return "tess eval";
423 unreachable("Unknown shader stage.");
427 * Translate a gl_shader_stage to a shader stage abbreviation (VS, GS, FS)
428 * for debug printouts and error messages.
431 _mesa_shader_stage_to_abbrev(unsigned stage
)
434 case MESA_SHADER_VERTEX
: return "VS";
435 case MESA_SHADER_FRAGMENT
: return "FS";
436 case MESA_SHADER_GEOMETRY
: return "GS";
437 case MESA_SHADER_COMPUTE
: return "CS";
438 case MESA_SHADER_TESS_CTRL
: return "TCS";
439 case MESA_SHADER_TESS_EVAL
: return "TES";
442 unreachable("Unknown shader stage.");
445 /* This helper function will append the given message to the shader's
446 info log and report it via GL_ARB_debug_output. Per that extension,
447 'type' is one of the enum values classifying the message, and
448 'id' is the implementation-defined ID of the given message. */
450 _mesa_glsl_msg(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
451 GLenum type
, const char *fmt
, va_list ap
)
453 bool error
= (type
== MESA_DEBUG_TYPE_ERROR
);
456 assert(state
->info_log
!= NULL
);
458 /* Get the offset that the new message will be written to. */
459 int msg_offset
= strlen(state
->info_log
);
461 ralloc_asprintf_append(&state
->info_log
, "%u:%u(%u): %s: ",
465 error
? "error" : "warning");
466 ralloc_vasprintf_append(&state
->info_log
, fmt
, ap
);
468 const char *const msg
= &state
->info_log
[msg_offset
];
469 struct gl_context
*ctx
= state
->ctx
;
471 /* Report the error via GL_ARB_debug_output. */
472 _mesa_shader_debug(ctx
, type
, &msg_id
, msg
, strlen(msg
));
474 ralloc_strcat(&state
->info_log
, "\n");
478 _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
479 const char *fmt
, ...)
486 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_ERROR
, fmt
, ap
);
492 _mesa_glsl_warning(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
493 const char *fmt
, ...)
498 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_OTHER
, fmt
, ap
);
504 * Enum representing the possible behaviors that can be specified in
505 * an #extension directive.
515 * Element type for _mesa_glsl_supported_extensions
517 struct _mesa_glsl_extension
{
519 * Name of the extension when referred to in a GLSL extension
524 /** True if this extension is available to desktop GL shaders */
527 /** True if this extension is available to GLES shaders */
531 * Flag in the gl_extensions struct indicating whether this
532 * extension is supported by the driver, or
533 * &gl_extensions::dummy_true if supported by all drivers.
535 * Note: the type (GLboolean gl_extensions::*) is a "pointer to
536 * member" type, the type-safe alternative to the "offsetof" macro.
539 * - foo bar::* p declares p to be an "offset" to a field of type
540 * foo that exists within struct bar
541 * - &bar::baz computes the "offset" of field baz within struct bar
542 * - x.*p accesses the field of x that exists at "offset" p
543 * - x->*p is equivalent to (*x).*p
545 const GLboolean
gl_extensions::* supported_flag
;
548 * Flag in the _mesa_glsl_parse_state struct that should be set
549 * when this extension is enabled.
551 * See note in _mesa_glsl_extension::supported_flag about "pointer
554 bool _mesa_glsl_parse_state::* enable_flag
;
557 * Flag in the _mesa_glsl_parse_state struct that should be set
558 * when the shader requests "warn" behavior for this extension.
560 * See note in _mesa_glsl_extension::supported_flag about "pointer
563 bool _mesa_glsl_parse_state::* warn_flag
;
566 bool compatible_with_state(const _mesa_glsl_parse_state
*state
) const;
567 void set_flags(_mesa_glsl_parse_state
*state
, ext_behavior behavior
) const;
570 #define EXT(NAME, GL, ES, SUPPORTED_FLAG) \
571 { "GL_" #NAME, GL, ES, &gl_extensions::SUPPORTED_FLAG, \
572 &_mesa_glsl_parse_state::NAME##_enable, \
573 &_mesa_glsl_parse_state::NAME##_warn }
576 * Table of extensions that can be enabled/disabled within a shader,
577 * and the conditions under which they are supported.
579 static const _mesa_glsl_extension _mesa_glsl_supported_extensions
[] = {
580 /* API availability */
581 /* name GL ES supported flag */
583 /* ARB extensions go here, sorted alphabetically.
585 EXT(ARB_arrays_of_arrays
, true, false, ARB_arrays_of_arrays
),
586 EXT(ARB_compute_shader
, true, false, ARB_compute_shader
),
587 EXT(ARB_conservative_depth
, true, false, ARB_conservative_depth
),
588 EXT(ARB_derivative_control
, true, false, ARB_derivative_control
),
589 EXT(ARB_draw_buffers
, true, false, dummy_true
),
590 EXT(ARB_draw_instanced
, true, false, ARB_draw_instanced
),
591 EXT(ARB_explicit_attrib_location
, true, false, ARB_explicit_attrib_location
),
592 EXT(ARB_explicit_uniform_location
, true, false, ARB_explicit_uniform_location
),
593 EXT(ARB_fragment_coord_conventions
, true, false, ARB_fragment_coord_conventions
),
594 EXT(ARB_fragment_layer_viewport
, true, false, ARB_fragment_layer_viewport
),
595 EXT(ARB_gpu_shader5
, true, false, ARB_gpu_shader5
),
596 EXT(ARB_gpu_shader_fp64
, true, false, ARB_gpu_shader_fp64
),
597 EXT(ARB_sample_shading
, true, false, ARB_sample_shading
),
598 EXT(ARB_separate_shader_objects
, true, false, dummy_true
),
599 EXT(ARB_shader_atomic_counters
, true, false, ARB_shader_atomic_counters
),
600 EXT(ARB_shader_bit_encoding
, true, false, ARB_shader_bit_encoding
),
601 EXT(ARB_shader_image_load_store
, true, false, ARB_shader_image_load_store
),
602 EXT(ARB_shader_image_size
, true, false, ARB_shader_image_size
),
603 EXT(ARB_shader_precision
, true, false, ARB_shader_precision
),
604 EXT(ARB_shader_stencil_export
, true, false, ARB_shader_stencil_export
),
605 EXT(ARB_shader_storage_buffer_object
, true, false, ARB_shader_storage_buffer_object
),
606 EXT(ARB_shader_subroutine
, true, false, ARB_shader_subroutine
),
607 EXT(ARB_shader_texture_lod
, true, false, ARB_shader_texture_lod
),
608 EXT(ARB_shading_language_420pack
, true, false, ARB_shading_language_420pack
),
609 EXT(ARB_shading_language_packing
, true, false, ARB_shading_language_packing
),
610 EXT(ARB_tessellation_shader
, true, false, ARB_tessellation_shader
),
611 EXT(ARB_texture_cube_map_array
, true, false, ARB_texture_cube_map_array
),
612 EXT(ARB_texture_gather
, true, false, ARB_texture_gather
),
613 EXT(ARB_texture_multisample
, true, false, ARB_texture_multisample
),
614 EXT(ARB_texture_query_levels
, true, false, ARB_texture_query_levels
),
615 EXT(ARB_texture_query_lod
, true, false, ARB_texture_query_lod
),
616 EXT(ARB_texture_rectangle
, true, false, dummy_true
),
617 EXT(ARB_uniform_buffer_object
, true, false, ARB_uniform_buffer_object
),
618 EXT(ARB_vertex_attrib_64bit
, true, false, ARB_vertex_attrib_64bit
),
619 EXT(ARB_viewport_array
, true, false, ARB_viewport_array
),
621 /* KHR extensions go here, sorted alphabetically.
624 /* OES extensions go here, sorted alphabetically.
626 EXT(OES_EGL_image_external
, false, true, OES_EGL_image_external
),
627 EXT(OES_standard_derivatives
, false, true, OES_standard_derivatives
),
628 EXT(OES_texture_3D
, false, true, EXT_texture3D
),
629 EXT(OES_texture_storage_multisample_2d_array
, false, true, ARB_texture_multisample
),
631 /* All other extensions go here, sorted alphabetically.
633 EXT(AMD_conservative_depth
, true, false, ARB_conservative_depth
),
634 EXT(AMD_shader_stencil_export
, true, false, ARB_shader_stencil_export
),
635 EXT(AMD_shader_trinary_minmax
, true, false, dummy_true
),
636 EXT(AMD_vertex_shader_layer
, true, false, AMD_vertex_shader_layer
),
637 EXT(AMD_vertex_shader_viewport_index
, true, false, AMD_vertex_shader_viewport_index
),
638 EXT(EXT_draw_buffers
, false, true, dummy_true
),
639 EXT(EXT_separate_shader_objects
, false, true, dummy_true
),
640 EXT(EXT_shader_integer_mix
, true, true, EXT_shader_integer_mix
),
641 EXT(EXT_texture_array
, true, false, EXT_texture_array
),
648 * Determine whether a given extension is compatible with the target,
649 * API, and extension information in the current parser state.
651 bool _mesa_glsl_extension::compatible_with_state(const _mesa_glsl_parse_state
*
654 /* Check that this extension matches whether we are compiling
655 * for desktop GL or GLES.
657 if (state
->es_shader
) {
658 if (!this->avail_in_ES
) return false;
660 if (!this->avail_in_GL
) return false;
663 /* Check that this extension is supported by the OpenGL
666 * Note: the ->* operator indexes into state->extensions by the
667 * offset this->supported_flag. See
668 * _mesa_glsl_extension::supported_flag for more info.
670 return state
->extensions
->*(this->supported_flag
);
674 * Set the appropriate flags in the parser state to establish the
675 * given behavior for this extension.
677 void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state
*state
,
678 ext_behavior behavior
) const
680 /* Note: the ->* operator indexes into state by the
681 * offsets this->enable_flag and this->warn_flag. See
682 * _mesa_glsl_extension::supported_flag for more info.
684 state
->*(this->enable_flag
) = (behavior
!= extension_disable
);
685 state
->*(this->warn_flag
) = (behavior
== extension_warn
);
689 * Find an extension by name in _mesa_glsl_supported_extensions. If
690 * the name is not found, return NULL.
692 static const _mesa_glsl_extension
*find_extension(const char *name
)
694 for (unsigned i
= 0; i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
695 if (strcmp(name
, _mesa_glsl_supported_extensions
[i
].name
) == 0) {
696 return &_mesa_glsl_supported_extensions
[i
];
704 _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
705 const char *behavior_string
, YYLTYPE
*behavior_locp
,
706 _mesa_glsl_parse_state
*state
)
708 ext_behavior behavior
;
709 if (strcmp(behavior_string
, "warn") == 0) {
710 behavior
= extension_warn
;
711 } else if (strcmp(behavior_string
, "require") == 0) {
712 behavior
= extension_require
;
713 } else if (strcmp(behavior_string
, "enable") == 0) {
714 behavior
= extension_enable
;
715 } else if (strcmp(behavior_string
, "disable") == 0) {
716 behavior
= extension_disable
;
718 _mesa_glsl_error(behavior_locp
, state
,
719 "unknown extension behavior `%s'",
724 if (strcmp(name
, "all") == 0) {
725 if ((behavior
== extension_enable
) || (behavior
== extension_require
)) {
726 _mesa_glsl_error(name_locp
, state
, "cannot %s all extensions",
727 (behavior
== extension_enable
)
728 ? "enable" : "require");
732 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
733 const _mesa_glsl_extension
*extension
734 = &_mesa_glsl_supported_extensions
[i
];
735 if (extension
->compatible_with_state(state
)) {
736 _mesa_glsl_supported_extensions
[i
].set_flags(state
, behavior
);
741 const _mesa_glsl_extension
*extension
= find_extension(name
);
742 if (extension
&& extension
->compatible_with_state(state
)) {
743 extension
->set_flags(state
, behavior
);
745 static const char fmt
[] = "extension `%s' unsupported in %s shader";
747 if (behavior
== extension_require
) {
748 _mesa_glsl_error(name_locp
, state
, fmt
,
749 name
, _mesa_shader_stage_to_string(state
->stage
));
752 _mesa_glsl_warning(name_locp
, state
, fmt
,
753 name
, _mesa_shader_stage_to_string(state
->stage
));
763 * Recurses through <type> and <expr> if <expr> is an aggregate initializer
764 * and sets <expr>'s <constructor_type> field to <type>. Gives later functions
765 * (process_array_constructor, et al) sufficient information to do type
768 * Operates on assignments involving an aggregate initializer. E.g.,
770 * vec4 pos = {1.0, -1.0, 0.0, 1.0};
772 * or more ridiculously,
785 * {1.0, 2.0, 3.0, 4.0}, // a[0].v[0]
786 * {5.0, 6.0, 7.0, 8.0} // a[0].v[1]
791 * {1.0, 2.0, 3.0, 4.0}, // a[1].v[0]
792 * {5.0, 6.0, 7.0, 8.0} // a[1].v[1]
798 * {1.0, 2.0, 3.0, 4.0}, // b.v[0]
799 * {5.0, 6.0, 7.0, 8.0} // b.v[1]
805 * This pass is necessary because the right-hand side of <type> e = { ... }
806 * doesn't contain sufficient information to determine if the types match.
809 _mesa_ast_set_aggregate_type(const glsl_type
*type
,
810 ast_expression
*expr
)
812 ast_aggregate_initializer
*ai
= (ast_aggregate_initializer
*)expr
;
813 ai
->constructor_type
= type
;
815 /* If the aggregate is an array, recursively set its elements' types. */
816 if (type
->is_array()) {
817 /* Each array element has the type type->fields.array.
819 * E.g., if <type> if struct S[2] we want to set each element's type to
822 for (exec_node
*expr_node
= ai
->expressions
.head
;
823 !expr_node
->is_tail_sentinel();
824 expr_node
= expr_node
->next
) {
825 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
828 if (expr
->oper
== ast_aggregate
)
829 _mesa_ast_set_aggregate_type(type
->fields
.array
, expr
);
832 /* If the aggregate is a struct, recursively set its fields' types. */
833 } else if (type
->is_record()) {
834 exec_node
*expr_node
= ai
->expressions
.head
;
836 /* Iterate through the struct's fields. */
837 for (unsigned i
= 0; !expr_node
->is_tail_sentinel() && i
< type
->length
;
838 i
++, expr_node
= expr_node
->next
) {
839 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
842 if (expr
->oper
== ast_aggregate
) {
843 _mesa_ast_set_aggregate_type(type
->fields
.structure
[i
].type
, expr
);
846 /* If the aggregate is a matrix, set its columns' types. */
847 } else if (type
->is_matrix()) {
848 for (exec_node
*expr_node
= ai
->expressions
.head
;
849 !expr_node
->is_tail_sentinel();
850 expr_node
= expr_node
->next
) {
851 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
854 if (expr
->oper
== ast_aggregate
)
855 _mesa_ast_set_aggregate_type(type
->column_type(), expr
);
862 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier
*q
)
864 if (q
->flags
.q
.subroutine
)
865 printf("subroutine ");
867 if (q
->flags
.q
.subroutine_def
) {
868 printf("subroutine (");
869 q
->subroutine_list
->print();
873 if (q
->flags
.q
.constant
)
876 if (q
->flags
.q
.invariant
)
877 printf("invariant ");
879 if (q
->flags
.q
.attribute
)
880 printf("attribute ");
882 if (q
->flags
.q
.varying
)
885 if (q
->flags
.q
.in
&& q
->flags
.q
.out
)
895 if (q
->flags
.q
.centroid
)
897 if (q
->flags
.q
.sample
)
899 if (q
->flags
.q
.patch
)
901 if (q
->flags
.q
.uniform
)
903 if (q
->flags
.q
.buffer
)
905 if (q
->flags
.q
.smooth
)
909 if (q
->flags
.q
.noperspective
)
910 printf("noperspective ");
915 ast_node::print(void) const
917 printf("unhandled node ");
921 ast_node::ast_node(void)
923 this->location
.source
= 0;
924 this->location
.first_line
= 0;
925 this->location
.first_column
= 0;
926 this->location
.last_line
= 0;
927 this->location
.last_column
= 0;
932 ast_opt_array_dimensions_print(const ast_array_specifier
*array_specifier
)
935 array_specifier
->print();
940 ast_compound_statement::print(void) const
944 foreach_list_typed(ast_node
, ast
, link
, &this->statements
) {
952 ast_compound_statement::ast_compound_statement(int new_scope
,
953 ast_node
*statements
)
955 this->new_scope
= new_scope
;
957 if (statements
!= NULL
) {
958 this->statements
.push_degenerate_list_at_head(&statements
->link
);
964 ast_expression::print(void) const
978 subexpressions
[0]->print();
979 printf("%s ", operator_string(oper
));
980 subexpressions
[1]->print();
983 case ast_field_selection
:
984 subexpressions
[0]->print();
985 printf(". %s ", primary_expression
.identifier
);
994 printf("%s ", operator_string(oper
));
995 subexpressions
[0]->print();
1000 subexpressions
[0]->print();
1001 printf("%s ", operator_string(oper
));
1004 case ast_conditional
:
1005 subexpressions
[0]->print();
1007 subexpressions
[1]->print();
1009 subexpressions
[2]->print();
1012 case ast_array_index
:
1013 subexpressions
[0]->print();
1015 subexpressions
[1]->print();
1019 case ast_function_call
: {
1020 subexpressions
[0]->print();
1023 foreach_list_typed (ast_node
, ast
, link
, &this->expressions
) {
1024 if (&ast
->link
!= this->expressions
.get_head())
1034 case ast_identifier
:
1035 printf("%s ", primary_expression
.identifier
);
1038 case ast_int_constant
:
1039 printf("%d ", primary_expression
.int_constant
);
1042 case ast_uint_constant
:
1043 printf("%u ", primary_expression
.uint_constant
);
1046 case ast_float_constant
:
1047 printf("%f ", primary_expression
.float_constant
);
1050 case ast_double_constant
:
1051 printf("%f ", primary_expression
.double_constant
);
1054 case ast_bool_constant
:
1056 primary_expression
.bool_constant
1057 ? "true" : "false");
1060 case ast_sequence
: {
1062 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1063 if (&ast
->link
!= this->expressions
.get_head())
1072 case ast_aggregate
: {
1074 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1075 if (&ast
->link
!= this->expressions
.get_head())
1090 ast_expression::ast_expression(int oper
,
1091 ast_expression
*ex0
,
1092 ast_expression
*ex1
,
1093 ast_expression
*ex2
) :
1094 primary_expression()
1096 this->oper
= ast_operators(oper
);
1097 this->subexpressions
[0] = ex0
;
1098 this->subexpressions
[1] = ex1
;
1099 this->subexpressions
[2] = ex2
;
1100 this->non_lvalue_description
= NULL
;
1105 ast_expression_statement::print(void) const
1108 expression
->print();
1114 ast_expression_statement::ast_expression_statement(ast_expression
*ex
) :
1122 ast_function::print(void) const
1124 return_type
->print();
1125 printf(" %s (", identifier
);
1127 foreach_list_typed(ast_node
, ast
, link
, & this->parameters
) {
1135 ast_function::ast_function(void)
1136 : return_type(NULL
), identifier(NULL
), is_definition(false),
1144 ast_fully_specified_type::print(void) const
1146 _mesa_ast_type_qualifier_print(& qualifier
);
1152 ast_parameter_declarator::print(void) const
1156 printf("%s ", identifier
);
1157 ast_opt_array_dimensions_print(array_specifier
);
1162 ast_function_definition::print(void) const
1170 ast_declaration::print(void) const
1172 printf("%s ", identifier
);
1173 ast_opt_array_dimensions_print(array_specifier
);
1177 initializer
->print();
1182 ast_declaration::ast_declaration(const char *identifier
,
1183 ast_array_specifier
*array_specifier
,
1184 ast_expression
*initializer
)
1186 this->identifier
= identifier
;
1187 this->array_specifier
= array_specifier
;
1188 this->initializer
= initializer
;
1193 ast_declarator_list::print(void) const
1195 assert(type
|| invariant
);
1200 printf("invariant ");
1204 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1205 if (&ast
->link
!= this->declarations
.get_head())
1215 ast_declarator_list::ast_declarator_list(ast_fully_specified_type
*type
)
1218 this->invariant
= false;
1219 this->precise
= false;
1223 ast_jump_statement::print(void) const
1227 printf("continue; ");
1234 if (opt_return_value
)
1235 opt_return_value
->print();
1240 printf("discard; ");
1246 ast_jump_statement::ast_jump_statement(int mode
, ast_expression
*return_value
)
1247 : opt_return_value(NULL
)
1249 this->mode
= ast_jump_modes(mode
);
1251 if (mode
== ast_return
)
1252 opt_return_value
= return_value
;
1257 ast_selection_statement::print(void) const
1263 then_statement
->print();
1265 if (else_statement
) {
1267 else_statement
->print();
1273 ast_selection_statement::ast_selection_statement(ast_expression
*condition
,
1274 ast_node
*then_statement
,
1275 ast_node
*else_statement
)
1277 this->condition
= condition
;
1278 this->then_statement
= then_statement
;
1279 this->else_statement
= else_statement
;
1284 ast_switch_statement::print(void) const
1286 printf("switch ( ");
1287 test_expression
->print();
1294 ast_switch_statement::ast_switch_statement(ast_expression
*test_expression
,
1297 this->test_expression
= test_expression
;
1303 ast_switch_body::print(void) const
1306 if (stmts
!= NULL
) {
1313 ast_switch_body::ast_switch_body(ast_case_statement_list
*stmts
)
1315 this->stmts
= stmts
;
1319 void ast_case_label::print(void) const
1321 if (test_value
!= NULL
) {
1323 test_value
->print();
1326 printf("default: ");
1331 ast_case_label::ast_case_label(ast_expression
*test_value
)
1333 this->test_value
= test_value
;
1337 void ast_case_label_list::print(void) const
1339 foreach_list_typed(ast_node
, ast
, link
, & this->labels
) {
1346 ast_case_label_list::ast_case_label_list(void)
1351 void ast_case_statement::print(void) const
1354 foreach_list_typed(ast_node
, ast
, link
, & this->stmts
) {
1361 ast_case_statement::ast_case_statement(ast_case_label_list
*labels
)
1363 this->labels
= labels
;
1367 void ast_case_statement_list::print(void) const
1369 foreach_list_typed(ast_node
, ast
, link
, & this->cases
) {
1375 ast_case_statement_list::ast_case_statement_list(void)
1381 ast_iteration_statement::print(void) const
1387 init_statement
->print();
1394 if (rest_expression
)
1395 rest_expression
->print();
1421 ast_iteration_statement::ast_iteration_statement(int mode
,
1423 ast_node
*condition
,
1424 ast_expression
*rest_expression
,
1427 this->mode
= ast_iteration_modes(mode
);
1428 this->init_statement
= init
;
1429 this->condition
= condition
;
1430 this->rest_expression
= rest_expression
;
1436 ast_struct_specifier::print(void) const
1438 printf("struct %s { ", name
);
1439 foreach_list_typed(ast_node
, ast
, link
, &this->declarations
) {
1446 ast_struct_specifier::ast_struct_specifier(const char *identifier
,
1447 ast_declarator_list
*declarator_list
)
1449 if (identifier
== NULL
) {
1450 static mtx_t mutex
= _MTX_INITIALIZER_NP
;
1451 static unsigned anon_count
= 1;
1455 count
= anon_count
++;
1458 identifier
= ralloc_asprintf(this, "#anon_struct_%04x", count
);
1461 this->declarations
.push_degenerate_list_at_head(&declarator_list
->link
);
1462 is_declaration
= true;
1465 void ast_subroutine_list::print(void) const
1467 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1468 if (&ast
->link
!= this->declarations
.get_head())
1475 set_shader_inout_layout(struct gl_shader
*shader
,
1476 struct _mesa_glsl_parse_state
*state
)
1478 /* Should have been prevented by the parser. */
1479 if (shader
->Stage
== MESA_SHADER_TESS_CTRL
) {
1480 assert(!state
->in_qualifier
->flags
.i
);
1481 } else if (shader
->Stage
== MESA_SHADER_TESS_EVAL
) {
1482 assert(!state
->out_qualifier
->flags
.i
);
1483 } else if (shader
->Stage
!= MESA_SHADER_GEOMETRY
) {
1484 assert(!state
->in_qualifier
->flags
.i
);
1485 assert(!state
->out_qualifier
->flags
.i
);
1488 if (shader
->Stage
!= MESA_SHADER_COMPUTE
) {
1489 /* Should have been prevented by the parser. */
1490 assert(!state
->cs_input_local_size_specified
);
1493 if (shader
->Stage
!= MESA_SHADER_FRAGMENT
) {
1494 /* Should have been prevented by the parser. */
1495 assert(!state
->fs_uses_gl_fragcoord
);
1496 assert(!state
->fs_redeclares_gl_fragcoord
);
1497 assert(!state
->fs_pixel_center_integer
);
1498 assert(!state
->fs_origin_upper_left
);
1499 assert(!state
->fs_early_fragment_tests
);
1502 switch (shader
->Stage
) {
1503 case MESA_SHADER_TESS_CTRL
:
1504 shader
->TessCtrl
.VerticesOut
= 0;
1505 if (state
->tcs_output_vertices_specified
)
1506 shader
->TessCtrl
.VerticesOut
= state
->out_qualifier
->vertices
;
1508 case MESA_SHADER_TESS_EVAL
:
1509 shader
->TessEval
.PrimitiveMode
= PRIM_UNKNOWN
;
1510 if (state
->in_qualifier
->flags
.q
.prim_type
)
1511 shader
->TessEval
.PrimitiveMode
= state
->in_qualifier
->prim_type
;
1513 shader
->TessEval
.Spacing
= 0;
1514 if (state
->in_qualifier
->flags
.q
.vertex_spacing
)
1515 shader
->TessEval
.Spacing
= state
->in_qualifier
->vertex_spacing
;
1517 shader
->TessEval
.VertexOrder
= 0;
1518 if (state
->in_qualifier
->flags
.q
.ordering
)
1519 shader
->TessEval
.VertexOrder
= state
->in_qualifier
->ordering
;
1521 shader
->TessEval
.PointMode
= -1;
1522 if (state
->in_qualifier
->flags
.q
.point_mode
)
1523 shader
->TessEval
.PointMode
= state
->in_qualifier
->point_mode
;
1525 case MESA_SHADER_GEOMETRY
:
1526 shader
->Geom
.VerticesOut
= 0;
1527 if (state
->out_qualifier
->flags
.q
.max_vertices
)
1528 shader
->Geom
.VerticesOut
= state
->out_qualifier
->max_vertices
;
1530 if (state
->gs_input_prim_type_specified
) {
1531 shader
->Geom
.InputType
= state
->in_qualifier
->prim_type
;
1533 shader
->Geom
.InputType
= PRIM_UNKNOWN
;
1536 if (state
->out_qualifier
->flags
.q
.prim_type
) {
1537 shader
->Geom
.OutputType
= state
->out_qualifier
->prim_type
;
1539 shader
->Geom
.OutputType
= PRIM_UNKNOWN
;
1542 shader
->Geom
.Invocations
= 0;
1543 if (state
->in_qualifier
->flags
.q
.invocations
)
1544 shader
->Geom
.Invocations
= state
->in_qualifier
->invocations
;
1547 case MESA_SHADER_COMPUTE
:
1548 if (state
->cs_input_local_size_specified
) {
1549 for (int i
= 0; i
< 3; i
++)
1550 shader
->Comp
.LocalSize
[i
] = state
->cs_input_local_size
[i
];
1552 for (int i
= 0; i
< 3; i
++)
1553 shader
->Comp
.LocalSize
[i
] = 0;
1557 case MESA_SHADER_FRAGMENT
:
1558 shader
->redeclares_gl_fragcoord
= state
->fs_redeclares_gl_fragcoord
;
1559 shader
->uses_gl_fragcoord
= state
->fs_uses_gl_fragcoord
;
1560 shader
->pixel_center_integer
= state
->fs_pixel_center_integer
;
1561 shader
->origin_upper_left
= state
->fs_origin_upper_left
;
1562 shader
->ARB_fragment_coord_conventions_enable
=
1563 state
->ARB_fragment_coord_conventions_enable
;
1564 shader
->EarlyFragmentTests
= state
->fs_early_fragment_tests
;
1568 /* Nothing to do. */
1576 _mesa_glsl_compile_shader(struct gl_context
*ctx
, struct gl_shader
*shader
,
1577 bool dump_ast
, bool dump_hir
)
1579 struct _mesa_glsl_parse_state
*state
=
1580 new(shader
) _mesa_glsl_parse_state(ctx
, shader
->Stage
, shader
);
1581 const char *source
= shader
->Source
;
1583 if (ctx
->Const
.GenerateTemporaryNames
)
1584 (void) p_atomic_cmpxchg(&ir_variable::temporaries_allocate_names
,
1587 state
->error
= glcpp_preprocess(state
, &source
, &state
->info_log
,
1588 &ctx
->Extensions
, ctx
);
1590 if (!state
->error
) {
1591 _mesa_glsl_lexer_ctor(state
, source
);
1592 _mesa_glsl_parse(state
);
1593 _mesa_glsl_lexer_dtor(state
);
1597 foreach_list_typed(ast_node
, ast
, link
, &state
->translation_unit
) {
1603 ralloc_free(shader
->ir
);
1604 shader
->ir
= new(shader
) exec_list
;
1605 if (!state
->error
&& !state
->translation_unit
.is_empty())
1606 _mesa_ast_to_hir(shader
->ir
, state
);
1608 if (!state
->error
) {
1609 validate_ir_tree(shader
->ir
);
1611 /* Print out the unoptimized IR. */
1613 _mesa_print_ir(stdout
, shader
->ir
, state
);
1618 if (!state
->error
&& !shader
->ir
->is_empty()) {
1619 struct gl_shader_compiler_options
*options
=
1620 &ctx
->Const
.ShaderCompilerOptions
[shader
->Stage
];
1622 lower_subroutine(shader
->ir
, state
);
1623 /* Do some optimization at compile time to reduce shader IR size
1624 * and reduce later work if the same shader is linked multiple times
1626 while (do_common_optimization(shader
->ir
, false, false, options
,
1627 ctx
->Const
.NativeIntegers
))
1630 validate_ir_tree(shader
->ir
);
1632 enum ir_variable_mode other
;
1633 switch (shader
->Stage
) {
1634 case MESA_SHADER_VERTEX
:
1635 other
= ir_var_shader_in
;
1637 case MESA_SHADER_FRAGMENT
:
1638 other
= ir_var_shader_out
;
1641 /* Something invalid to ensure optimize_dead_builtin_uniforms
1642 * doesn't remove anything other than uniforms or constants.
1644 other
= ir_var_mode_count
;
1648 optimize_dead_builtin_variables(shader
->ir
, other
);
1650 validate_ir_tree(shader
->ir
);
1653 if (shader
->InfoLog
)
1654 ralloc_free(shader
->InfoLog
);
1656 shader
->symbols
= new(shader
->ir
) glsl_symbol_table
;
1657 shader
->CompileStatus
= !state
->error
;
1658 shader
->InfoLog
= state
->info_log
;
1659 shader
->Version
= state
->language_version
;
1660 shader
->IsES
= state
->es_shader
;
1661 shader
->uses_builtin_functions
= state
->uses_builtin_functions
;
1664 set_shader_inout_layout(shader
, state
);
1666 /* Retain any live IR, but trash the rest. */
1667 reparent_ir(shader
->ir
, shader
->ir
);
1669 /* Destroy the symbol table. Create a new symbol table that contains only
1670 * the variables and functions that still exist in the IR. The symbol
1671 * table will be used later during linking.
1673 * There must NOT be any freed objects still referenced by the symbol
1674 * table. That could cause the linker to dereference freed memory.
1676 * We don't have to worry about types or interface-types here because those
1677 * are fly-weights that are looked up by glsl_type.
1679 foreach_in_list (ir_instruction
, ir
, shader
->ir
) {
1680 switch (ir
->ir_type
) {
1681 case ir_type_function
:
1682 shader
->symbols
->add_function((ir_function
*) ir
);
1684 case ir_type_variable
: {
1685 ir_variable
*const var
= (ir_variable
*) ir
;
1687 if (var
->data
.mode
!= ir_var_temporary
)
1688 shader
->symbols
->add_variable(var
);
1696 delete state
->symbols
;
1702 * Do the set of common optimizations passes
1704 * \param ir List of instructions to be optimized
1705 * \param linked Is the shader linked? This enables
1706 * optimizations passes that remove code at
1707 * global scope and could cause linking to
1709 * \param uniform_locations_assigned Have locations already been assigned for
1710 * uniforms? This prevents the declarations
1711 * of unused uniforms from being removed.
1712 * The setting of this flag only matters if
1713 * \c linked is \c true.
1714 * \param max_unroll_iterations Maximum number of loop iterations to be
1715 * unrolled. Setting to 0 disables loop
1717 * \param options The driver's preferred shader options.
1720 do_common_optimization(exec_list
*ir
, bool linked
,
1721 bool uniform_locations_assigned
,
1722 const struct gl_shader_compiler_options
*options
,
1723 bool native_integers
)
1725 GLboolean progress
= GL_FALSE
;
1727 progress
= lower_instructions(ir
, SUB_TO_ADD_NEG
) || progress
;
1730 progress
= do_function_inlining(ir
) || progress
;
1731 progress
= do_dead_functions(ir
) || progress
;
1732 progress
= do_structure_splitting(ir
) || progress
;
1734 progress
= do_if_simplification(ir
) || progress
;
1735 progress
= opt_flatten_nested_if_blocks(ir
) || progress
;
1736 progress
= opt_conditional_discard(ir
) || progress
;
1737 progress
= do_copy_propagation(ir
) || progress
;
1738 progress
= do_copy_propagation_elements(ir
) || progress
;
1740 if (options
->OptimizeForAOS
&& !linked
)
1741 progress
= opt_flip_matrices(ir
) || progress
;
1743 if (linked
&& options
->OptimizeForAOS
) {
1744 progress
= do_vectorize(ir
) || progress
;
1748 progress
= do_dead_code(ir
, uniform_locations_assigned
) || progress
;
1750 progress
= do_dead_code_unlinked(ir
) || progress
;
1751 progress
= do_dead_code_local(ir
) || progress
;
1752 progress
= do_tree_grafting(ir
) || progress
;
1753 progress
= do_constant_propagation(ir
) || progress
;
1755 progress
= do_constant_variable(ir
) || progress
;
1757 progress
= do_constant_variable_unlinked(ir
) || progress
;
1758 progress
= do_constant_folding(ir
) || progress
;
1759 progress
= do_minmax_prune(ir
) || progress
;
1760 progress
= do_cse(ir
) || progress
;
1761 progress
= do_rebalance_tree(ir
) || progress
;
1762 progress
= do_algebraic(ir
, native_integers
, options
) || progress
;
1763 progress
= do_lower_jumps(ir
) || progress
;
1764 progress
= do_vec_index_to_swizzle(ir
) || progress
;
1765 progress
= lower_vector_insert(ir
, false) || progress
;
1766 progress
= do_swizzle_swizzle(ir
) || progress
;
1767 progress
= do_noop_swizzle(ir
) || progress
;
1769 progress
= optimize_split_arrays(ir
, linked
) || progress
;
1770 progress
= optimize_redundant_jumps(ir
) || progress
;
1772 loop_state
*ls
= analyze_loop_variables(ir
);
1773 if (ls
->loop_found
) {
1774 progress
= set_loop_controls(ir
, ls
) || progress
;
1775 progress
= unroll_loops(ir
, ls
, options
) || progress
;
1785 * To be called at GL teardown time, this frees compiler datastructures.
1787 * After calling this, any previously compiled shaders and shader
1788 * programs would be invalid. So this should happen at approximately
1792 _mesa_destroy_shader_compiler(void)
1794 _mesa_destroy_shader_compiler_caches();
1796 _mesa_glsl_release_types();
1800 * Releases compiler caches to trade off performance for memory.
1802 * Intended to be used with glReleaseShaderCompiler().
1805 _mesa_destroy_shader_compiler_caches(void)
1807 _mesa_glsl_release_builtin_functions();