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.
23 #include <inttypes.h> /* for PRIx64 macro */
29 #include "main/context.h"
30 #include "main/debug_output.h"
31 #include "main/formats.h"
32 #include "main/shaderobj.h"
33 #include "util/u_atomic.h" /* for p_atomic_cmpxchg */
34 #include "util/ralloc.h"
35 #include "util/disk_cache.h"
36 #include "util/mesa-sha1.h"
38 #include "glsl_parser_extras.h"
39 #include "glsl_parser.h"
40 #include "ir_optimization.h"
41 #include "loop_analysis.h"
42 #include "builtin_functions.h"
45 * Format a short human-readable description of the given GLSL version.
48 glsl_compute_version_string(void *mem_ctx
, bool is_es
, unsigned version
)
50 return ralloc_asprintf(mem_ctx
, "GLSL%s %d.%02d", is_es
? " ES" : "",
51 version
/ 100, version
% 100);
55 static const unsigned known_desktop_glsl_versions
[] =
56 { 110, 120, 130, 140, 150, 330, 400, 410, 420, 430, 440, 450, 460 };
57 static const unsigned known_desktop_gl_versions
[] =
58 { 20, 21, 30, 31, 32, 33, 40, 41, 42, 43, 44, 45, 46 };
61 _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context
*_ctx
,
62 gl_shader_stage stage
,
64 : ctx(_ctx
), cs_input_local_size_specified(false), cs_input_local_size(),
65 switch_state(), warnings_enabled(true)
67 assert(stage
< MESA_SHADER_STAGES
);
71 this->translation_unit
.make_empty();
72 this->symbols
= new(mem_ctx
) glsl_symbol_table
;
74 this->linalloc
= linear_alloc_parent(this, 0);
76 this->info_log
= ralloc_strdup(mem_ctx
, "");
78 this->loop_nesting_ast
= NULL
;
80 this->uses_builtin_functions
= false;
82 /* Set default language version and extensions */
83 this->language_version
= 110;
84 this->forced_language_version
= ctx
->Const
.ForceGLSLVersion
;
85 this->zero_init
= ctx
->Const
.GLSLZeroInit
;
86 this->gl_version
= 20;
87 this->compat_shader
= true;
88 this->es_shader
= false;
89 this->ARB_texture_rectangle_enable
= true;
91 /* OpenGL ES 2.0 has different defaults from desktop GL. */
92 if (ctx
->API
== API_OPENGLES2
) {
93 this->language_version
= 100;
94 this->es_shader
= true;
95 this->ARB_texture_rectangle_enable
= false;
98 this->extensions
= &ctx
->Extensions
;
100 this->Const
.MaxLights
= ctx
->Const
.MaxLights
;
101 this->Const
.MaxClipPlanes
= ctx
->Const
.MaxClipPlanes
;
102 this->Const
.MaxTextureUnits
= ctx
->Const
.MaxTextureUnits
;
103 this->Const
.MaxTextureCoords
= ctx
->Const
.MaxTextureCoordUnits
;
104 this->Const
.MaxVertexAttribs
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
;
105 this->Const
.MaxVertexUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxUniformComponents
;
106 this->Const
.MaxVertexTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
;
107 this->Const
.MaxCombinedTextureImageUnits
= ctx
->Const
.MaxCombinedTextureImageUnits
;
108 this->Const
.MaxTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
;
109 this->Const
.MaxFragmentUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxUniformComponents
;
110 this->Const
.MinProgramTexelOffset
= ctx
->Const
.MinProgramTexelOffset
;
111 this->Const
.MaxProgramTexelOffset
= ctx
->Const
.MaxProgramTexelOffset
;
113 this->Const
.MaxDrawBuffers
= ctx
->Const
.MaxDrawBuffers
;
115 this->Const
.MaxDualSourceDrawBuffers
= ctx
->Const
.MaxDualSourceDrawBuffers
;
118 this->Const
.MaxVertexOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
;
119 this->Const
.MaxGeometryInputComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
;
120 this->Const
.MaxGeometryOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
;
121 this->Const
.MaxGeometryShaderInvocations
= ctx
->Const
.MaxGeometryShaderInvocations
;
122 this->Const
.MaxFragmentInputComponents
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
;
123 this->Const
.MaxGeometryTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
;
124 this->Const
.MaxGeometryOutputVertices
= ctx
->Const
.MaxGeometryOutputVertices
;
125 this->Const
.MaxGeometryTotalOutputComponents
= ctx
->Const
.MaxGeometryTotalOutputComponents
;
126 this->Const
.MaxGeometryUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxUniformComponents
;
128 this->Const
.MaxVertexAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicCounters
;
129 this->Const
.MaxTessControlAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicCounters
;
130 this->Const
.MaxTessEvaluationAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicCounters
;
131 this->Const
.MaxGeometryAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
;
132 this->Const
.MaxFragmentAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
;
133 this->Const
.MaxComputeAtomicCounters
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicCounters
;
134 this->Const
.MaxCombinedAtomicCounters
= ctx
->Const
.MaxCombinedAtomicCounters
;
135 this->Const
.MaxAtomicBufferBindings
= ctx
->Const
.MaxAtomicBufferBindings
;
136 this->Const
.MaxVertexAtomicCounterBuffers
=
137 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
;
138 this->Const
.MaxTessControlAtomicCounterBuffers
=
139 ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxAtomicBuffers
;
140 this->Const
.MaxTessEvaluationAtomicCounterBuffers
=
141 ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxAtomicBuffers
;
142 this->Const
.MaxGeometryAtomicCounterBuffers
=
143 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
;
144 this->Const
.MaxFragmentAtomicCounterBuffers
=
145 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
;
146 this->Const
.MaxComputeAtomicCounterBuffers
=
147 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicBuffers
;
148 this->Const
.MaxCombinedAtomicCounterBuffers
=
149 ctx
->Const
.MaxCombinedAtomicBuffers
;
150 this->Const
.MaxAtomicCounterBufferSize
=
151 ctx
->Const
.MaxAtomicBufferSize
;
153 /* ARB_enhanced_layouts constants */
154 this->Const
.MaxTransformFeedbackBuffers
= ctx
->Const
.MaxTransformFeedbackBuffers
;
155 this->Const
.MaxTransformFeedbackInterleavedComponents
= ctx
->Const
.MaxTransformFeedbackInterleavedComponents
;
157 /* Compute shader constants */
158 for (unsigned i
= 0; i
< ARRAY_SIZE(this->Const
.MaxComputeWorkGroupCount
); i
++)
159 this->Const
.MaxComputeWorkGroupCount
[i
] = ctx
->Const
.MaxComputeWorkGroupCount
[i
];
160 for (unsigned i
= 0; i
< ARRAY_SIZE(this->Const
.MaxComputeWorkGroupSize
); i
++)
161 this->Const
.MaxComputeWorkGroupSize
[i
] = ctx
->Const
.MaxComputeWorkGroupSize
[i
];
163 this->Const
.MaxComputeTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
;
164 this->Const
.MaxComputeUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxUniformComponents
;
166 this->Const
.MaxImageUnits
= ctx
->Const
.MaxImageUnits
;
167 this->Const
.MaxCombinedShaderOutputResources
= ctx
->Const
.MaxCombinedShaderOutputResources
;
168 this->Const
.MaxImageSamples
= ctx
->Const
.MaxImageSamples
;
169 this->Const
.MaxVertexImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxImageUniforms
;
170 this->Const
.MaxTessControlImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxImageUniforms
;
171 this->Const
.MaxTessEvaluationImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxImageUniforms
;
172 this->Const
.MaxGeometryImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxImageUniforms
;
173 this->Const
.MaxFragmentImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxImageUniforms
;
174 this->Const
.MaxComputeImageUniforms
= ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxImageUniforms
;
175 this->Const
.MaxCombinedImageUniforms
= ctx
->Const
.MaxCombinedImageUniforms
;
177 /* ARB_viewport_array */
178 this->Const
.MaxViewports
= ctx
->Const
.MaxViewports
;
180 /* tessellation shader constants */
181 this->Const
.MaxPatchVertices
= ctx
->Const
.MaxPatchVertices
;
182 this->Const
.MaxTessGenLevel
= ctx
->Const
.MaxTessGenLevel
;
183 this->Const
.MaxTessControlInputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxInputComponents
;
184 this->Const
.MaxTessControlOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxOutputComponents
;
185 this->Const
.MaxTessControlTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxTextureImageUnits
;
186 this->Const
.MaxTessEvaluationInputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxInputComponents
;
187 this->Const
.MaxTessEvaluationOutputComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxOutputComponents
;
188 this->Const
.MaxTessEvaluationTextureImageUnits
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxTextureImageUnits
;
189 this->Const
.MaxTessPatchComponents
= ctx
->Const
.MaxTessPatchComponents
;
190 this->Const
.MaxTessControlTotalOutputComponents
= ctx
->Const
.MaxTessControlTotalOutputComponents
;
191 this->Const
.MaxTessControlUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_CTRL
].MaxUniformComponents
;
192 this->Const
.MaxTessEvaluationUniformComponents
= ctx
->Const
.Program
[MESA_SHADER_TESS_EVAL
].MaxUniformComponents
;
194 /* GL 4.5 / OES_sample_variables */
195 this->Const
.MaxSamples
= ctx
->Const
.MaxSamples
;
197 this->current_function
= NULL
;
198 this->toplevel_ir
= NULL
;
199 this->found_return
= false;
200 this->found_begin_interlock
= false;
201 this->found_end_interlock
= false;
202 this->all_invariant
= false;
203 this->user_structures
= NULL
;
204 this->num_user_structures
= 0;
205 this->num_subroutines
= 0;
206 this->subroutines
= NULL
;
207 this->num_subroutine_types
= 0;
208 this->subroutine_types
= NULL
;
210 /* supported_versions should be large enough to support the known desktop
211 * GLSL versions plus 4 GLES versions (ES 1.00, ES 3.00, ES 3.10, ES 3.20)
213 STATIC_ASSERT((ARRAY_SIZE(known_desktop_glsl_versions
) + 4) ==
214 ARRAY_SIZE(this->supported_versions
));
216 /* Populate the list of supported GLSL versions */
217 /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or
218 * the OpenGL 3.2 Core context is supported, this logic will need
219 * change. Older versions of GLSL are no longer supported
220 * outside the compatibility contexts of 3.x.
222 this->num_supported_versions
= 0;
223 if (_mesa_is_desktop_gl(ctx
)) {
224 for (unsigned i
= 0; i
< ARRAY_SIZE(known_desktop_glsl_versions
); i
++) {
225 if (known_desktop_glsl_versions
[i
] <= ctx
->Const
.GLSLVersion
) {
226 this->supported_versions
[this->num_supported_versions
].ver
227 = known_desktop_glsl_versions
[i
];
228 this->supported_versions
[this->num_supported_versions
].gl_ver
229 = known_desktop_gl_versions
[i
];
230 this->supported_versions
[this->num_supported_versions
].es
= false;
231 this->num_supported_versions
++;
235 if (ctx
->API
== API_OPENGLES2
|| ctx
->Extensions
.ARB_ES2_compatibility
) {
236 this->supported_versions
[this->num_supported_versions
].ver
= 100;
237 this->supported_versions
[this->num_supported_versions
].gl_ver
= 20;
238 this->supported_versions
[this->num_supported_versions
].es
= true;
239 this->num_supported_versions
++;
241 if (_mesa_is_gles3(ctx
) || ctx
->Extensions
.ARB_ES3_compatibility
) {
242 this->supported_versions
[this->num_supported_versions
].ver
= 300;
243 this->supported_versions
[this->num_supported_versions
].gl_ver
= 30;
244 this->supported_versions
[this->num_supported_versions
].es
= true;
245 this->num_supported_versions
++;
247 if (_mesa_is_gles31(ctx
) || ctx
->Extensions
.ARB_ES3_1_compatibility
) {
248 this->supported_versions
[this->num_supported_versions
].ver
= 310;
249 this->supported_versions
[this->num_supported_versions
].gl_ver
= 31;
250 this->supported_versions
[this->num_supported_versions
].es
= true;
251 this->num_supported_versions
++;
253 if ((ctx
->API
== API_OPENGLES2
&& ctx
->Version
>= 32) ||
254 ctx
->Extensions
.ARB_ES3_2_compatibility
) {
255 this->supported_versions
[this->num_supported_versions
].ver
= 320;
256 this->supported_versions
[this->num_supported_versions
].gl_ver
= 32;
257 this->supported_versions
[this->num_supported_versions
].es
= true;
258 this->num_supported_versions
++;
261 /* Create a string for use in error messages to tell the user which GLSL
262 * versions are supported.
264 char *supported
= ralloc_strdup(this, "");
265 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
266 unsigned ver
= this->supported_versions
[i
].ver
;
267 const char *const prefix
= (i
== 0)
269 : ((i
== this->num_supported_versions
- 1) ? ", and " : ", ");
270 const char *const suffix
= (this->supported_versions
[i
].es
) ? " ES" : "";
272 ralloc_asprintf_append(& supported
, "%s%u.%02u%s",
274 ver
/ 100, ver
% 100,
278 this->supported_version_string
= supported
;
280 if (ctx
->Const
.ForceGLSLExtensionsWarn
)
281 _mesa_glsl_process_extension("all", NULL
, "warn", NULL
, this);
283 this->default_uniform_qualifier
= new(this) ast_type_qualifier();
284 this->default_uniform_qualifier
->flags
.q
.shared
= 1;
285 this->default_uniform_qualifier
->flags
.q
.column_major
= 1;
287 this->default_shader_storage_qualifier
= new(this) ast_type_qualifier();
288 this->default_shader_storage_qualifier
->flags
.q
.shared
= 1;
289 this->default_shader_storage_qualifier
->flags
.q
.column_major
= 1;
291 this->fs_uses_gl_fragcoord
= false;
292 this->fs_redeclares_gl_fragcoord
= false;
293 this->fs_origin_upper_left
= false;
294 this->fs_pixel_center_integer
= false;
295 this->fs_redeclares_gl_fragcoord_with_no_layout_qualifiers
= false;
297 this->gs_input_prim_type_specified
= false;
298 this->tcs_output_vertices_specified
= false;
299 this->gs_input_size
= 0;
300 this->in_qualifier
= new(this) ast_type_qualifier();
301 this->out_qualifier
= new(this) ast_type_qualifier();
302 this->fs_early_fragment_tests
= false;
303 this->fs_inner_coverage
= false;
304 this->fs_post_depth_coverage
= false;
305 this->fs_pixel_interlock_ordered
= false;
306 this->fs_pixel_interlock_unordered
= false;
307 this->fs_sample_interlock_ordered
= false;
308 this->fs_sample_interlock_unordered
= false;
309 this->fs_blend_support
= 0;
310 memset(this->atomic_counter_offsets
, 0,
311 sizeof(this->atomic_counter_offsets
));
312 this->allow_extension_directive_midshader
=
313 ctx
->Const
.AllowGLSLExtensionDirectiveMidShader
;
314 this->allow_builtin_variable_redeclaration
=
315 ctx
->Const
.AllowGLSLBuiltinVariableRedeclaration
;
316 this->allow_layout_qualifier_on_function_parameter
=
317 ctx
->Const
.AllowLayoutQualifiersOnFunctionParameters
;
319 this->cs_input_local_size_variable_specified
= false;
321 /* ARB_bindless_texture */
322 this->bindless_sampler_specified
= false;
323 this->bindless_image_specified
= false;
324 this->bound_sampler_specified
= false;
325 this->bound_image_specified
= false;
329 * Determine whether the current GLSL version is sufficiently high to support
330 * a certain feature, and generate an error message if it isn't.
332 * \param required_glsl_version and \c required_glsl_es_version are
333 * interpreted as they are in _mesa_glsl_parse_state::is_version().
335 * \param locp is the parser location where the error should be reported.
337 * \param fmt (and additional arguments) constitute a printf-style error
338 * message to report if the version check fails. Information about the
339 * current and required GLSL versions will be appended. So, for example, if
340 * the GLSL version being compiled is 1.20, and check_version(130, 300, locp,
341 * "foo unsupported") is called, the error message will be "foo unsupported in
342 * GLSL 1.20 (GLSL 1.30 or GLSL 3.00 ES required)".
345 _mesa_glsl_parse_state::check_version(unsigned required_glsl_version
,
346 unsigned required_glsl_es_version
,
347 YYLTYPE
*locp
, const char *fmt
, ...)
349 if (this->is_version(required_glsl_version
, required_glsl_es_version
))
354 char *problem
= ralloc_vasprintf(this, fmt
, args
);
356 const char *glsl_version_string
357 = glsl_compute_version_string(this, false, required_glsl_version
);
358 const char *glsl_es_version_string
359 = glsl_compute_version_string(this, true, required_glsl_es_version
);
360 const char *requirement_string
= "";
361 if (required_glsl_version
&& required_glsl_es_version
) {
362 requirement_string
= ralloc_asprintf(this, " (%s or %s required)",
364 glsl_es_version_string
);
365 } else if (required_glsl_version
) {
366 requirement_string
= ralloc_asprintf(this, " (%s required)",
367 glsl_version_string
);
368 } else if (required_glsl_es_version
) {
369 requirement_string
= ralloc_asprintf(this, " (%s required)",
370 glsl_es_version_string
);
372 _mesa_glsl_error(locp
, this, "%s in %s%s",
373 problem
, this->get_version_string(),
380 * Process a GLSL #version directive.
382 * \param version is the integer that follows the #version token.
384 * \param ident is a string identifier that follows the integer, if any is
385 * present. Otherwise NULL.
388 _mesa_glsl_parse_state::process_version_directive(YYLTYPE
*locp
, int version
,
391 bool es_token_present
= false;
392 bool compat_token_present
= false;
394 if (strcmp(ident
, "es") == 0) {
395 es_token_present
= true;
396 } else if (version
>= 150) {
397 if (strcmp(ident
, "core") == 0) {
398 /* Accept the token. There's no need to record that this is
399 * a core profile shader since that's the only profile we support.
401 } else if (strcmp(ident
, "compatibility") == 0) {
402 compat_token_present
= true;
404 if (this->ctx
->API
!= API_OPENGL_COMPAT
) {
405 _mesa_glsl_error(locp
, this,
406 "the compatibility profile is not supported");
409 _mesa_glsl_error(locp
, this,
410 "\"%s\" is not a valid shading language profile; "
411 "if present, it must be \"core\"", ident
);
414 _mesa_glsl_error(locp
, this,
415 "illegal text following version number");
419 this->es_shader
= es_token_present
;
420 if (version
== 100) {
421 if (es_token_present
) {
422 _mesa_glsl_error(locp
, this,
423 "GLSL 1.00 ES should be selected using "
426 this->es_shader
= true;
430 if (this->es_shader
) {
431 this->ARB_texture_rectangle_enable
= false;
434 if (this->forced_language_version
)
435 this->language_version
= this->forced_language_version
;
437 this->language_version
= version
;
439 this->compat_shader
= compat_token_present
||
440 (this->ctx
->API
== API_OPENGL_COMPAT
&&
441 this->language_version
== 140) ||
442 (!this->es_shader
&& this->language_version
< 140);
444 bool supported
= false;
445 for (unsigned i
= 0; i
< this->num_supported_versions
; i
++) {
446 if (this->supported_versions
[i
].ver
== this->language_version
447 && this->supported_versions
[i
].es
== this->es_shader
) {
448 this->gl_version
= this->supported_versions
[i
].gl_ver
;
455 _mesa_glsl_error(locp
, this, "%s is not supported. "
456 "Supported versions are: %s",
457 this->get_version_string(),
458 this->supported_version_string
);
460 /* On exit, the language_version must be set to a valid value.
461 * Later calls to _mesa_glsl_initialize_types will misbehave if
462 * the version is invalid.
464 switch (this->ctx
->API
) {
465 case API_OPENGL_COMPAT
:
466 case API_OPENGL_CORE
:
467 this->language_version
= this->ctx
->Const
.GLSLVersion
;
471 assert(!"Should not get here.");
475 this->language_version
= 100;
482 /* This helper function will append the given message to the shader's
483 info log and report it via GL_ARB_debug_output. Per that extension,
484 'type' is one of the enum values classifying the message, and
485 'id' is the implementation-defined ID of the given message. */
487 _mesa_glsl_msg(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
488 GLenum type
, const char *fmt
, va_list ap
)
490 bool error
= (type
== MESA_DEBUG_TYPE_ERROR
);
493 assert(state
->info_log
!= NULL
);
495 /* Get the offset that the new message will be written to. */
496 int msg_offset
= strlen(state
->info_log
);
499 ralloc_asprintf_append(&state
->info_log
, "\"%s\"", locp
->path
);
501 ralloc_asprintf_append(&state
->info_log
, "%u", locp
->source
);
503 ralloc_asprintf_append(&state
->info_log
, ":%u(%u): %s: ",
504 locp
->first_line
, locp
->first_column
,
505 error
? "error" : "warning");
507 ralloc_vasprintf_append(&state
->info_log
, fmt
, ap
);
509 const char *const msg
= &state
->info_log
[msg_offset
];
510 struct gl_context
*ctx
= state
->ctx
;
512 /* Report the error via GL_ARB_debug_output. */
513 _mesa_shader_debug(ctx
, type
, &msg_id
, msg
);
515 ralloc_strcat(&state
->info_log
, "\n");
519 _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
520 const char *fmt
, ...)
527 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_ERROR
, fmt
, ap
);
533 _mesa_glsl_warning(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
534 const char *fmt
, ...)
536 if (state
->warnings_enabled
) {
540 _mesa_glsl_msg(locp
, state
, MESA_DEBUG_TYPE_OTHER
, fmt
, ap
);
547 * Enum representing the possible behaviors that can be specified in
548 * an #extension directive.
558 * Element type for _mesa_glsl_supported_extensions
560 struct _mesa_glsl_extension
{
562 * Name of the extension when referred to in a GLSL extension
568 * Whether this extension is a part of AEP
573 * Predicate that checks whether the relevant extension is available for
576 bool (*available_pred
)(const struct gl_context
*,
577 gl_api api
, uint8_t version
);
580 * Flag in the _mesa_glsl_parse_state struct that should be set
581 * when this extension is enabled.
583 * See note in _mesa_glsl_extension::supported_flag about "pointer
586 bool _mesa_glsl_parse_state::* enable_flag
;
589 * Flag in the _mesa_glsl_parse_state struct that should be set
590 * when the shader requests "warn" behavior for this extension.
592 * See note in _mesa_glsl_extension::supported_flag about "pointer
595 bool _mesa_glsl_parse_state::* warn_flag
;
598 bool compatible_with_state(const _mesa_glsl_parse_state
*state
,
599 gl_api api
, uint8_t gl_version
) const;
600 void set_flags(_mesa_glsl_parse_state
*state
, ext_behavior behavior
) const;
603 /** Checks if the context supports a user-facing extension */
604 #define EXT(name_str, driver_cap, ...) \
606 has_##name_str(const struct gl_context *ctx, gl_api api, uint8_t version) \
608 return ctx->Extensions.driver_cap && (version >= \
609 _mesa_extension_table[MESA_EXTENSION_##name_str].version[api]); \
611 #include "main/extensions_table.h"
615 { "GL_" #NAME, false, has_##NAME, \
616 &_mesa_glsl_parse_state::NAME##_enable, \
617 &_mesa_glsl_parse_state::NAME##_warn }
619 #define EXT_AEP(NAME) \
620 { "GL_" #NAME, true, has_##NAME, \
621 &_mesa_glsl_parse_state::NAME##_enable, \
622 &_mesa_glsl_parse_state::NAME##_warn }
625 * Table of extensions that can be enabled/disabled within a shader,
626 * and the conditions under which they are supported.
628 static const _mesa_glsl_extension _mesa_glsl_supported_extensions
[] = {
629 /* ARB extensions go here, sorted alphabetically.
631 EXT(ARB_ES3_1_compatibility
),
632 EXT(ARB_ES3_2_compatibility
),
633 EXT(ARB_arrays_of_arrays
),
634 EXT(ARB_bindless_texture
),
635 EXT(ARB_compatibility
),
636 EXT(ARB_compute_shader
),
637 EXT(ARB_compute_variable_group_size
),
638 EXT(ARB_conservative_depth
),
639 EXT(ARB_cull_distance
),
640 EXT(ARB_derivative_control
),
641 EXT(ARB_draw_buffers
),
642 EXT(ARB_draw_instanced
),
643 EXT(ARB_enhanced_layouts
),
644 EXT(ARB_explicit_attrib_location
),
645 EXT(ARB_explicit_uniform_location
),
646 EXT(ARB_fragment_coord_conventions
),
647 EXT(ARB_fragment_layer_viewport
),
648 EXT(ARB_fragment_shader_interlock
),
649 EXT(ARB_gpu_shader5
),
650 EXT(ARB_gpu_shader_fp64
),
651 EXT(ARB_gpu_shader_int64
),
652 EXT(ARB_post_depth_coverage
),
653 EXT(ARB_sample_shading
),
654 EXT(ARB_separate_shader_objects
),
655 EXT(ARB_shader_atomic_counter_ops
),
656 EXT(ARB_shader_atomic_counters
),
657 EXT(ARB_shader_ballot
),
658 EXT(ARB_shader_bit_encoding
),
659 EXT(ARB_shader_clock
),
660 EXT(ARB_shader_draw_parameters
),
661 EXT(ARB_shader_group_vote
),
662 EXT(ARB_shader_image_load_store
),
663 EXT(ARB_shader_image_size
),
664 EXT(ARB_shader_precision
),
665 EXT(ARB_shader_stencil_export
),
666 EXT(ARB_shader_storage_buffer_object
),
667 EXT(ARB_shader_subroutine
),
668 EXT(ARB_shader_texture_image_samples
),
669 EXT(ARB_shader_texture_lod
),
670 EXT(ARB_shader_viewport_layer_array
),
671 EXT(ARB_shading_language_420pack
),
672 EXT(ARB_shading_language_include
),
673 EXT(ARB_shading_language_packing
),
674 EXT(ARB_tessellation_shader
),
675 EXT(ARB_texture_cube_map_array
),
676 EXT(ARB_texture_gather
),
677 EXT(ARB_texture_multisample
),
678 EXT(ARB_texture_query_levels
),
679 EXT(ARB_texture_query_lod
),
680 EXT(ARB_texture_rectangle
),
681 EXT(ARB_uniform_buffer_object
),
682 EXT(ARB_vertex_attrib_64bit
),
683 EXT(ARB_viewport_array
),
685 /* KHR extensions go here, sorted alphabetically.
687 EXT_AEP(KHR_blend_equation_advanced
),
689 /* OES extensions go here, sorted alphabetically.
691 EXT(OES_EGL_image_external
),
692 EXT(OES_EGL_image_external_essl3
),
693 EXT(OES_geometry_point_size
),
694 EXT(OES_geometry_shader
),
695 EXT(OES_gpu_shader5
),
696 EXT(OES_primitive_bounding_box
),
697 EXT_AEP(OES_sample_variables
),
698 EXT_AEP(OES_shader_image_atomic
),
699 EXT(OES_shader_io_blocks
),
700 EXT_AEP(OES_shader_multisample_interpolation
),
701 EXT(OES_standard_derivatives
),
702 EXT(OES_tessellation_point_size
),
703 EXT(OES_tessellation_shader
),
705 EXT(OES_texture_buffer
),
706 EXT(OES_texture_cube_map_array
),
707 EXT_AEP(OES_texture_storage_multisample_2d_array
),
708 EXT(OES_viewport_array
),
710 /* All other extensions go here, sorted alphabetically.
712 EXT(AMD_conservative_depth
),
713 EXT(AMD_gpu_shader_int64
),
714 EXT(AMD_shader_stencil_export
),
715 EXT(AMD_shader_trinary_minmax
),
716 EXT(AMD_texture_texture4
),
717 EXT(AMD_vertex_shader_layer
),
718 EXT(AMD_vertex_shader_viewport_index
),
719 EXT(ANDROID_extension_pack_es31a
),
720 EXT(EXT_blend_func_extended
),
721 EXT(EXT_demote_to_helper_invocation
),
723 EXT(EXT_draw_buffers
),
724 EXT(EXT_clip_cull_distance
),
725 EXT(EXT_geometry_point_size
),
726 EXT_AEP(EXT_geometry_shader
),
727 EXT(EXT_gpu_shader4
),
728 EXT_AEP(EXT_gpu_shader5
),
729 EXT_AEP(EXT_primitive_bounding_box
),
730 EXT(EXT_separate_shader_objects
),
731 EXT(EXT_shader_framebuffer_fetch
),
732 EXT(EXT_shader_framebuffer_fetch_non_coherent
),
733 EXT(EXT_shader_image_load_formatted
),
734 EXT(EXT_shader_image_load_store
),
735 EXT(EXT_shader_implicit_conversions
),
736 EXT(EXT_shader_integer_mix
),
737 EXT_AEP(EXT_shader_io_blocks
),
738 EXT(EXT_shader_samples_identical
),
739 EXT(EXT_tessellation_point_size
),
740 EXT_AEP(EXT_tessellation_shader
),
741 EXT(EXT_texture_array
),
742 EXT_AEP(EXT_texture_buffer
),
743 EXT_AEP(EXT_texture_cube_map_array
),
744 EXT(EXT_texture_query_lod
),
745 EXT(EXT_texture_shadow_lod
),
746 EXT(INTEL_conservative_rasterization
),
747 EXT(INTEL_shader_atomic_float_minmax
),
748 EXT(MESA_shader_integer_functions
),
749 EXT(NV_compute_shader_derivatives
),
750 EXT(NV_fragment_shader_interlock
),
751 EXT(NV_image_formats
),
752 EXT(NV_shader_atomic_float
),
759 * Determine whether a given extension is compatible with the target,
760 * API, and extension information in the current parser state.
762 bool _mesa_glsl_extension::compatible_with_state(
763 const _mesa_glsl_parse_state
*state
, gl_api api
, uint8_t gl_version
) const
765 return this->available_pred(state
->ctx
, api
, gl_version
);
769 * Set the appropriate flags in the parser state to establish the
770 * given behavior for this extension.
772 void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state
*state
,
773 ext_behavior behavior
) const
775 /* Note: the ->* operator indexes into state by the
776 * offsets this->enable_flag and this->warn_flag. See
777 * _mesa_glsl_extension::supported_flag for more info.
779 state
->*(this->enable_flag
) = (behavior
!= extension_disable
);
780 state
->*(this->warn_flag
) = (behavior
== extension_warn
);
784 * Find an extension by name in _mesa_glsl_supported_extensions. If
785 * the name is not found, return NULL.
787 static const _mesa_glsl_extension
*find_extension(const char *name
)
789 for (unsigned i
= 0; i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
790 if (strcmp(name
, _mesa_glsl_supported_extensions
[i
].name
) == 0) {
791 return &_mesa_glsl_supported_extensions
[i
];
798 _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
799 const char *behavior_string
, YYLTYPE
*behavior_locp
,
800 _mesa_glsl_parse_state
*state
)
802 uint8_t gl_version
= state
->ctx
->Extensions
.Version
;
803 gl_api api
= state
->ctx
->API
;
804 ext_behavior behavior
;
805 if (strcmp(behavior_string
, "warn") == 0) {
806 behavior
= extension_warn
;
807 } else if (strcmp(behavior_string
, "require") == 0) {
808 behavior
= extension_require
;
809 } else if (strcmp(behavior_string
, "enable") == 0) {
810 behavior
= extension_enable
;
811 } else if (strcmp(behavior_string
, "disable") == 0) {
812 behavior
= extension_disable
;
814 _mesa_glsl_error(behavior_locp
, state
,
815 "unknown extension behavior `%s'",
820 /* If we're in a desktop context but with an ES shader, use an ES API enum
821 * to verify extension availability.
823 if (state
->es_shader
&& api
!= API_OPENGLES2
)
825 /* Use the language-version derived GL version to extension checks, unless
826 * we're using meta, which sets the version to the max.
828 if (gl_version
!= 0xff)
829 gl_version
= state
->gl_version
;
831 if (strcmp(name
, "all") == 0) {
832 if ((behavior
== extension_enable
) || (behavior
== extension_require
)) {
833 _mesa_glsl_error(name_locp
, state
, "cannot %s all extensions",
834 (behavior
== extension_enable
)
835 ? "enable" : "require");
839 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
840 const _mesa_glsl_extension
*extension
841 = &_mesa_glsl_supported_extensions
[i
];
842 if (extension
->compatible_with_state(state
, api
, gl_version
)) {
843 _mesa_glsl_supported_extensions
[i
].set_flags(state
, behavior
);
848 const _mesa_glsl_extension
*extension
= find_extension(name
);
849 if (extension
&& extension
->compatible_with_state(state
, api
, gl_version
)) {
850 extension
->set_flags(state
, behavior
);
851 if (extension
->available_pred
== has_ANDROID_extension_pack_es31a
) {
853 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
854 const _mesa_glsl_extension
*extension
=
855 &_mesa_glsl_supported_extensions
[i
];
859 /* AEP should not be enabled if all of the sub-extensions can't
860 * also be enabled. This is not the proper layer to do such
861 * error-checking though.
863 assert(extension
->compatible_with_state(state
, api
, gl_version
));
864 extension
->set_flags(state
, behavior
);
868 static const char fmt
[] = "extension `%s' unsupported in %s shader";
870 if (behavior
== extension_require
) {
871 _mesa_glsl_error(name_locp
, state
, fmt
,
872 name
, _mesa_shader_stage_to_string(state
->stage
));
875 _mesa_glsl_warning(name_locp
, state
, fmt
,
876 name
, _mesa_shader_stage_to_string(state
->stage
));
886 * Recurses through <type> and <expr> if <expr> is an aggregate initializer
887 * and sets <expr>'s <constructor_type> field to <type>. Gives later functions
888 * (process_array_constructor, et al) sufficient information to do type
891 * Operates on assignments involving an aggregate initializer. E.g.,
893 * vec4 pos = {1.0, -1.0, 0.0, 1.0};
895 * or more ridiculously,
908 * {1.0, 2.0, 3.0, 4.0}, // a[0].v[0]
909 * {5.0, 6.0, 7.0, 8.0} // a[0].v[1]
914 * {1.0, 2.0, 3.0, 4.0}, // a[1].v[0]
915 * {5.0, 6.0, 7.0, 8.0} // a[1].v[1]
921 * {1.0, 2.0, 3.0, 4.0}, // b.v[0]
922 * {5.0, 6.0, 7.0, 8.0} // b.v[1]
928 * This pass is necessary because the right-hand side of <type> e = { ... }
929 * doesn't contain sufficient information to determine if the types match.
932 _mesa_ast_set_aggregate_type(const glsl_type
*type
,
933 ast_expression
*expr
)
935 ast_aggregate_initializer
*ai
= (ast_aggregate_initializer
*)expr
;
936 ai
->constructor_type
= type
;
938 /* If the aggregate is an array, recursively set its elements' types. */
939 if (type
->is_array()) {
940 /* Each array element has the type type->fields.array.
942 * E.g., if <type> if struct S[2] we want to set each element's type to
945 for (exec_node
*expr_node
= ai
->expressions
.get_head_raw();
946 !expr_node
->is_tail_sentinel();
947 expr_node
= expr_node
->next
) {
948 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
951 if (expr
->oper
== ast_aggregate
)
952 _mesa_ast_set_aggregate_type(type
->fields
.array
, expr
);
955 /* If the aggregate is a struct, recursively set its fields' types. */
956 } else if (type
->is_struct()) {
957 exec_node
*expr_node
= ai
->expressions
.get_head_raw();
959 /* Iterate through the struct's fields. */
960 for (unsigned i
= 0; !expr_node
->is_tail_sentinel() && i
< type
->length
;
961 i
++, expr_node
= expr_node
->next
) {
962 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
965 if (expr
->oper
== ast_aggregate
) {
966 _mesa_ast_set_aggregate_type(type
->fields
.structure
[i
].type
, expr
);
969 /* If the aggregate is a matrix, set its columns' types. */
970 } else if (type
->is_matrix()) {
971 for (exec_node
*expr_node
= ai
->expressions
.get_head_raw();
972 !expr_node
->is_tail_sentinel();
973 expr_node
= expr_node
->next
) {
974 ast_expression
*expr
= exec_node_data(ast_expression
, expr_node
,
977 if (expr
->oper
== ast_aggregate
)
978 _mesa_ast_set_aggregate_type(type
->column_type(), expr
);
984 _mesa_ast_process_interface_block(YYLTYPE
*locp
,
985 _mesa_glsl_parse_state
*state
,
986 ast_interface_block
*const block
,
987 const struct ast_type_qualifier
&q
)
989 if (q
.flags
.q
.buffer
) {
990 if (!state
->has_shader_storage_buffer_objects()) {
991 _mesa_glsl_error(locp
, state
,
992 "#version 430 / GL_ARB_shader_storage_buffer_object "
993 "required for defining shader storage blocks");
994 } else if (state
->ARB_shader_storage_buffer_object_warn
) {
995 _mesa_glsl_warning(locp
, state
,
996 "#version 430 / GL_ARB_shader_storage_buffer_object "
997 "required for defining shader storage blocks");
999 } else if (q
.flags
.q
.uniform
) {
1000 if (!state
->has_uniform_buffer_objects()) {
1001 _mesa_glsl_error(locp
, state
,
1002 "#version 140 / GL_ARB_uniform_buffer_object "
1003 "required for defining uniform blocks");
1004 } else if (state
->ARB_uniform_buffer_object_warn
) {
1005 _mesa_glsl_warning(locp
, state
,
1006 "#version 140 / GL_ARB_uniform_buffer_object "
1007 "required for defining uniform blocks");
1010 if (!state
->has_shader_io_blocks()) {
1011 if (state
->es_shader
) {
1012 _mesa_glsl_error(locp
, state
,
1013 "GL_OES_shader_io_blocks or #version 320 "
1014 "required for using interface blocks");
1016 _mesa_glsl_error(locp
, state
,
1017 "#version 150 required for using "
1018 "interface blocks");
1023 /* From the GLSL 1.50.11 spec, section 4.3.7 ("Interface Blocks"):
1024 * "It is illegal to have an input block in a vertex shader
1025 * or an output block in a fragment shader"
1027 if ((state
->stage
== MESA_SHADER_VERTEX
) && q
.flags
.q
.in
) {
1028 _mesa_glsl_error(locp
, state
,
1029 "`in' interface block is not allowed for "
1031 } else if ((state
->stage
== MESA_SHADER_FRAGMENT
) && q
.flags
.q
.out
) {
1032 _mesa_glsl_error(locp
, state
,
1033 "`out' interface block is not allowed for "
1034 "a fragment shader");
1037 /* Since block arrays require names, and both features are added in
1038 * the same language versions, we don't have to explicitly
1039 * version-check both things.
1041 if (block
->instance_name
!= NULL
) {
1042 state
->check_version(150, 300, locp
, "interface blocks with "
1043 "an instance name are not allowed");
1046 ast_type_qualifier::bitset_t interface_type_mask
;
1047 struct ast_type_qualifier temp_type_qualifier
;
1049 /* Get a bitmask containing only the in/out/uniform/buffer
1050 * flags, allowing us to ignore other irrelevant flags like
1051 * interpolation qualifiers.
1053 temp_type_qualifier
.flags
.i
= 0;
1054 temp_type_qualifier
.flags
.q
.uniform
= true;
1055 temp_type_qualifier
.flags
.q
.in
= true;
1056 temp_type_qualifier
.flags
.q
.out
= true;
1057 temp_type_qualifier
.flags
.q
.buffer
= true;
1058 temp_type_qualifier
.flags
.q
.patch
= true;
1059 interface_type_mask
= temp_type_qualifier
.flags
.i
;
1061 /* Get the block's interface qualifier. The interface_qualifier
1062 * production rule guarantees that only one bit will be set (and
1063 * it will be in/out/uniform).
1065 ast_type_qualifier::bitset_t block_interface_qualifier
= q
.flags
.i
;
1067 block
->default_layout
.flags
.i
|= block_interface_qualifier
;
1069 if (state
->stage
== MESA_SHADER_GEOMETRY
&&
1070 state
->has_explicit_attrib_stream() &&
1071 block
->default_layout
.flags
.q
.out
) {
1072 /* Assign global layout's stream value. */
1073 block
->default_layout
.flags
.q
.stream
= 1;
1074 block
->default_layout
.flags
.q
.explicit_stream
= 0;
1075 block
->default_layout
.stream
= state
->out_qualifier
->stream
;
1078 if (state
->has_enhanced_layouts() && block
->default_layout
.flags
.q
.out
) {
1079 /* Assign global layout's xfb_buffer value. */
1080 block
->default_layout
.flags
.q
.xfb_buffer
= 1;
1081 block
->default_layout
.flags
.q
.explicit_xfb_buffer
= 0;
1082 block
->default_layout
.xfb_buffer
= state
->out_qualifier
->xfb_buffer
;
1085 foreach_list_typed (ast_declarator_list
, member
, link
, &block
->declarations
) {
1086 ast_type_qualifier
& qualifier
= member
->type
->qualifier
;
1087 if ((qualifier
.flags
.i
& interface_type_mask
) == 0) {
1088 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1089 * "If no optional qualifier is used in a member declaration, the
1090 * qualifier of the variable is just in, out, or uniform as declared
1091 * by interface-qualifier."
1093 qualifier
.flags
.i
|= block_interface_qualifier
;
1094 } else if ((qualifier
.flags
.i
& interface_type_mask
) !=
1095 block_interface_qualifier
) {
1096 /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
1097 * "If optional qualifiers are used, they can include interpolation
1098 * and storage qualifiers and they must declare an input, output,
1099 * or uniform variable consistent with the interface qualifier of
1102 _mesa_glsl_error(locp
, state
,
1103 "uniform/in/out qualifier on "
1104 "interface block member does not match "
1105 "the interface block");
1108 if (!(q
.flags
.q
.in
|| q
.flags
.q
.out
) && qualifier
.flags
.q
.invariant
)
1109 _mesa_glsl_error(locp
, state
,
1110 "invariant qualifiers can be used only "
1111 "in interface block members for shader "
1112 "inputs or outputs");
1117 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier
*q
)
1119 if (q
->is_subroutine_decl())
1120 printf("subroutine ");
1122 if (q
->subroutine_list
) {
1123 printf("subroutine (");
1124 q
->subroutine_list
->print();
1128 if (q
->flags
.q
.constant
)
1131 if (q
->flags
.q
.invariant
)
1132 printf("invariant ");
1134 if (q
->flags
.q
.attribute
)
1135 printf("attribute ");
1137 if (q
->flags
.q
.varying
)
1140 if (q
->flags
.q
.in
&& q
->flags
.q
.out
)
1150 if (q
->flags
.q
.centroid
)
1151 printf("centroid ");
1152 if (q
->flags
.q
.sample
)
1154 if (q
->flags
.q
.patch
)
1156 if (q
->flags
.q
.uniform
)
1158 if (q
->flags
.q
.buffer
)
1160 if (q
->flags
.q
.smooth
)
1162 if (q
->flags
.q
.flat
)
1164 if (q
->flags
.q
.noperspective
)
1165 printf("noperspective ");
1170 ast_node::print(void) const
1172 printf("unhandled node ");
1176 ast_node::ast_node(void)
1178 this->location
.source
= 0;
1179 this->location
.first_line
= 0;
1180 this->location
.first_column
= 0;
1181 this->location
.last_line
= 0;
1182 this->location
.last_column
= 0;
1187 ast_opt_array_dimensions_print(const ast_array_specifier
*array_specifier
)
1189 if (array_specifier
)
1190 array_specifier
->print();
1195 ast_compound_statement::print(void) const
1199 foreach_list_typed(ast_node
, ast
, link
, &this->statements
) {
1207 ast_compound_statement::ast_compound_statement(int new_scope
,
1208 ast_node
*statements
)
1210 this->new_scope
= new_scope
;
1212 if (statements
!= NULL
) {
1213 this->statements
.push_degenerate_list_at_head(&statements
->link
);
1219 ast_expression::print(void) const
1223 case ast_mul_assign
:
1224 case ast_div_assign
:
1225 case ast_mod_assign
:
1226 case ast_add_assign
:
1227 case ast_sub_assign
:
1230 case ast_and_assign
:
1231 case ast_xor_assign
:
1233 subexpressions
[0]->print();
1234 printf("%s ", operator_string(oper
));
1235 subexpressions
[1]->print();
1238 case ast_field_selection
:
1239 subexpressions
[0]->print();
1240 printf(". %s ", primary_expression
.identifier
);
1249 printf("%s ", operator_string(oper
));
1250 subexpressions
[0]->print();
1255 subexpressions
[0]->print();
1256 printf("%s ", operator_string(oper
));
1259 case ast_conditional
:
1260 subexpressions
[0]->print();
1262 subexpressions
[1]->print();
1264 subexpressions
[2]->print();
1267 case ast_array_index
:
1268 subexpressions
[0]->print();
1270 subexpressions
[1]->print();
1274 case ast_function_call
: {
1275 subexpressions
[0]->print();
1278 foreach_list_typed (ast_node
, ast
, link
, &this->expressions
) {
1279 if (&ast
->link
!= this->expressions
.get_head())
1289 case ast_identifier
:
1290 printf("%s ", primary_expression
.identifier
);
1293 case ast_int_constant
:
1294 printf("%d ", primary_expression
.int_constant
);
1297 case ast_uint_constant
:
1298 printf("%u ", primary_expression
.uint_constant
);
1301 case ast_float_constant
:
1302 printf("%f ", primary_expression
.float_constant
);
1305 case ast_double_constant
:
1306 printf("%f ", primary_expression
.double_constant
);
1309 case ast_int64_constant
:
1310 printf("%" PRId64
" ", primary_expression
.int64_constant
);
1313 case ast_uint64_constant
:
1314 printf("%" PRIu64
" ", primary_expression
.uint64_constant
);
1317 case ast_bool_constant
:
1319 primary_expression
.bool_constant
1320 ? "true" : "false");
1323 case ast_sequence
: {
1325 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1326 if (&ast
->link
!= this->expressions
.get_head())
1335 case ast_aggregate
: {
1337 foreach_list_typed (ast_node
, ast
, link
, & this->expressions
) {
1338 if (&ast
->link
!= this->expressions
.get_head())
1353 ast_expression::ast_expression(int oper
,
1354 ast_expression
*ex0
,
1355 ast_expression
*ex1
,
1356 ast_expression
*ex2
) :
1357 primary_expression()
1359 this->oper
= ast_operators(oper
);
1360 this->subexpressions
[0] = ex0
;
1361 this->subexpressions
[1] = ex1
;
1362 this->subexpressions
[2] = ex2
;
1363 this->non_lvalue_description
= NULL
;
1364 this->is_lhs
= false;
1369 ast_expression_statement::print(void) const
1372 expression
->print();
1378 ast_expression_statement::ast_expression_statement(ast_expression
*ex
) :
1386 ast_function::print(void) const
1388 return_type
->print();
1389 printf(" %s (", identifier
);
1391 foreach_list_typed(ast_node
, ast
, link
, & this->parameters
) {
1399 ast_function::ast_function(void)
1400 : return_type(NULL
), identifier(NULL
), is_definition(false),
1408 ast_fully_specified_type::print(void) const
1410 _mesa_ast_type_qualifier_print(& qualifier
);
1416 ast_parameter_declarator::print(void) const
1420 printf("%s ", identifier
);
1421 ast_opt_array_dimensions_print(array_specifier
);
1426 ast_function_definition::print(void) const
1434 ast_declaration::print(void) const
1436 printf("%s ", identifier
);
1437 ast_opt_array_dimensions_print(array_specifier
);
1441 initializer
->print();
1446 ast_declaration::ast_declaration(const char *identifier
,
1447 ast_array_specifier
*array_specifier
,
1448 ast_expression
*initializer
)
1450 this->identifier
= identifier
;
1451 this->array_specifier
= array_specifier
;
1452 this->initializer
= initializer
;
1457 ast_declarator_list::print(void) const
1459 assert(type
|| invariant
);
1464 printf("invariant ");
1468 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1469 if (&ast
->link
!= this->declarations
.get_head())
1479 ast_declarator_list::ast_declarator_list(ast_fully_specified_type
*type
)
1482 this->invariant
= false;
1483 this->precise
= false;
1487 ast_jump_statement::print(void) const
1491 printf("continue; ");
1498 if (opt_return_value
)
1499 opt_return_value
->print();
1504 printf("discard; ");
1510 ast_jump_statement::ast_jump_statement(int mode
, ast_expression
*return_value
)
1511 : opt_return_value(NULL
)
1513 this->mode
= ast_jump_modes(mode
);
1515 if (mode
== ast_return
)
1516 opt_return_value
= return_value
;
1521 ast_demote_statement::print(void) const
1528 ast_selection_statement::print(void) const
1534 then_statement
->print();
1536 if (else_statement
) {
1538 else_statement
->print();
1543 ast_selection_statement::ast_selection_statement(ast_expression
*condition
,
1544 ast_node
*then_statement
,
1545 ast_node
*else_statement
)
1547 this->condition
= condition
;
1548 this->then_statement
= then_statement
;
1549 this->else_statement
= else_statement
;
1554 ast_switch_statement::print(void) const
1556 printf("switch ( ");
1557 test_expression
->print();
1564 ast_switch_statement::ast_switch_statement(ast_expression
*test_expression
,
1567 this->test_expression
= test_expression
;
1573 ast_switch_body::print(void) const
1576 if (stmts
!= NULL
) {
1583 ast_switch_body::ast_switch_body(ast_case_statement_list
*stmts
)
1585 this->stmts
= stmts
;
1589 void ast_case_label::print(void) const
1591 if (test_value
!= NULL
) {
1593 test_value
->print();
1596 printf("default: ");
1601 ast_case_label::ast_case_label(ast_expression
*test_value
)
1603 this->test_value
= test_value
;
1607 void ast_case_label_list::print(void) const
1609 foreach_list_typed(ast_node
, ast
, link
, & this->labels
) {
1616 ast_case_label_list::ast_case_label_list(void)
1621 void ast_case_statement::print(void) const
1624 foreach_list_typed(ast_node
, ast
, link
, & this->stmts
) {
1631 ast_case_statement::ast_case_statement(ast_case_label_list
*labels
)
1633 this->labels
= labels
;
1637 void ast_case_statement_list::print(void) const
1639 foreach_list_typed(ast_node
, ast
, link
, & this->cases
) {
1645 ast_case_statement_list::ast_case_statement_list(void)
1651 ast_iteration_statement::print(void) const
1657 init_statement
->print();
1664 if (rest_expression
)
1665 rest_expression
->print();
1691 ast_iteration_statement::ast_iteration_statement(int mode
,
1693 ast_node
*condition
,
1694 ast_expression
*rest_expression
,
1697 this->mode
= ast_iteration_modes(mode
);
1698 this->init_statement
= init
;
1699 this->condition
= condition
;
1700 this->rest_expression
= rest_expression
;
1706 ast_struct_specifier::print(void) const
1708 printf("struct %s { ", name
);
1709 foreach_list_typed(ast_node
, ast
, link
, &this->declarations
) {
1716 ast_struct_specifier::ast_struct_specifier(const char *identifier
,
1717 ast_declarator_list
*declarator_list
)
1718 : name(identifier
), layout(NULL
), declarations(), is_declaration(true),
1721 this->declarations
.push_degenerate_list_at_head(&declarator_list
->link
);
1724 void ast_subroutine_list::print(void) const
1726 foreach_list_typed (ast_node
, ast
, link
, & this->declarations
) {
1727 if (&ast
->link
!= this->declarations
.get_head())
1734 set_shader_inout_layout(struct gl_shader
*shader
,
1735 struct _mesa_glsl_parse_state
*state
)
1737 /* Should have been prevented by the parser. */
1738 if (shader
->Stage
!= MESA_SHADER_GEOMETRY
&&
1739 shader
->Stage
!= MESA_SHADER_TESS_EVAL
&&
1740 shader
->Stage
!= MESA_SHADER_COMPUTE
) {
1741 assert(!state
->in_qualifier
->flags
.i
);
1744 if (shader
->Stage
!= MESA_SHADER_COMPUTE
) {
1745 /* Should have been prevented by the parser. */
1746 assert(!state
->cs_input_local_size_specified
);
1747 assert(!state
->cs_input_local_size_variable_specified
);
1748 assert(state
->cs_derivative_group
== DERIVATIVE_GROUP_NONE
);
1751 if (shader
->Stage
!= MESA_SHADER_FRAGMENT
) {
1752 /* Should have been prevented by the parser. */
1753 assert(!state
->fs_uses_gl_fragcoord
);
1754 assert(!state
->fs_redeclares_gl_fragcoord
);
1755 assert(!state
->fs_pixel_center_integer
);
1756 assert(!state
->fs_origin_upper_left
);
1757 assert(!state
->fs_early_fragment_tests
);
1758 assert(!state
->fs_inner_coverage
);
1759 assert(!state
->fs_post_depth_coverage
);
1760 assert(!state
->fs_pixel_interlock_ordered
);
1761 assert(!state
->fs_pixel_interlock_unordered
);
1762 assert(!state
->fs_sample_interlock_ordered
);
1763 assert(!state
->fs_sample_interlock_unordered
);
1766 for (unsigned i
= 0; i
< MAX_FEEDBACK_BUFFERS
; i
++) {
1767 if (state
->out_qualifier
->out_xfb_stride
[i
]) {
1768 unsigned xfb_stride
;
1769 if (state
->out_qualifier
->out_xfb_stride
[i
]->
1770 process_qualifier_constant(state
, "xfb_stride", &xfb_stride
,
1772 shader
->TransformFeedbackBufferStride
[i
] = xfb_stride
;
1777 switch (shader
->Stage
) {
1778 case MESA_SHADER_TESS_CTRL
:
1779 shader
->info
.TessCtrl
.VerticesOut
= 0;
1780 if (state
->tcs_output_vertices_specified
) {
1782 if (state
->out_qualifier
->vertices
->
1783 process_qualifier_constant(state
, "vertices", &vertices
,
1786 YYLTYPE loc
= state
->out_qualifier
->vertices
->get_location();
1787 if (vertices
> state
->Const
.MaxPatchVertices
) {
1788 _mesa_glsl_error(&loc
, state
, "vertices (%d) exceeds "
1789 "GL_MAX_PATCH_VERTICES", vertices
);
1791 shader
->info
.TessCtrl
.VerticesOut
= vertices
;
1795 case MESA_SHADER_TESS_EVAL
:
1796 shader
->info
.TessEval
.PrimitiveMode
= PRIM_UNKNOWN
;
1797 if (state
->in_qualifier
->flags
.q
.prim_type
)
1798 shader
->info
.TessEval
.PrimitiveMode
= state
->in_qualifier
->prim_type
;
1800 shader
->info
.TessEval
.Spacing
= TESS_SPACING_UNSPECIFIED
;
1801 if (state
->in_qualifier
->flags
.q
.vertex_spacing
)
1802 shader
->info
.TessEval
.Spacing
= state
->in_qualifier
->vertex_spacing
;
1804 shader
->info
.TessEval
.VertexOrder
= 0;
1805 if (state
->in_qualifier
->flags
.q
.ordering
)
1806 shader
->info
.TessEval
.VertexOrder
= state
->in_qualifier
->ordering
;
1808 shader
->info
.TessEval
.PointMode
= -1;
1809 if (state
->in_qualifier
->flags
.q
.point_mode
)
1810 shader
->info
.TessEval
.PointMode
= state
->in_qualifier
->point_mode
;
1812 case MESA_SHADER_GEOMETRY
:
1813 shader
->info
.Geom
.VerticesOut
= -1;
1814 if (state
->out_qualifier
->flags
.q
.max_vertices
) {
1815 unsigned qual_max_vertices
;
1816 if (state
->out_qualifier
->max_vertices
->
1817 process_qualifier_constant(state
, "max_vertices",
1818 &qual_max_vertices
, true)) {
1820 if (qual_max_vertices
> state
->Const
.MaxGeometryOutputVertices
) {
1821 YYLTYPE loc
= state
->out_qualifier
->max_vertices
->get_location();
1822 _mesa_glsl_error(&loc
, state
,
1823 "maximum output vertices (%d) exceeds "
1824 "GL_MAX_GEOMETRY_OUTPUT_VERTICES",
1827 shader
->info
.Geom
.VerticesOut
= qual_max_vertices
;
1831 if (state
->gs_input_prim_type_specified
) {
1832 shader
->info
.Geom
.InputType
= state
->in_qualifier
->prim_type
;
1834 shader
->info
.Geom
.InputType
= PRIM_UNKNOWN
;
1837 if (state
->out_qualifier
->flags
.q
.prim_type
) {
1838 shader
->info
.Geom
.OutputType
= state
->out_qualifier
->prim_type
;
1840 shader
->info
.Geom
.OutputType
= PRIM_UNKNOWN
;
1843 shader
->info
.Geom
.Invocations
= 0;
1844 if (state
->in_qualifier
->flags
.q
.invocations
) {
1845 unsigned invocations
;
1846 if (state
->in_qualifier
->invocations
->
1847 process_qualifier_constant(state
, "invocations",
1848 &invocations
, false)) {
1850 YYLTYPE loc
= state
->in_qualifier
->invocations
->get_location();
1851 if (invocations
> state
->Const
.MaxGeometryShaderInvocations
) {
1852 _mesa_glsl_error(&loc
, state
,
1853 "invocations (%d) exceeds "
1854 "GL_MAX_GEOMETRY_SHADER_INVOCATIONS",
1857 shader
->info
.Geom
.Invocations
= invocations
;
1862 case MESA_SHADER_COMPUTE
:
1863 if (state
->cs_input_local_size_specified
) {
1864 for (int i
= 0; i
< 3; i
++)
1865 shader
->info
.Comp
.LocalSize
[i
] = state
->cs_input_local_size
[i
];
1867 for (int i
= 0; i
< 3; i
++)
1868 shader
->info
.Comp
.LocalSize
[i
] = 0;
1871 shader
->info
.Comp
.LocalSizeVariable
=
1872 state
->cs_input_local_size_variable_specified
;
1874 shader
->info
.Comp
.DerivativeGroup
= state
->cs_derivative_group
;
1876 if (state
->NV_compute_shader_derivatives_enable
) {
1877 /* We allow multiple cs_input_layout nodes, but do not store them in
1878 * a convenient place, so for now live with an empty location error.
1881 if (shader
->info
.Comp
.DerivativeGroup
== DERIVATIVE_GROUP_QUADS
) {
1882 if (shader
->info
.Comp
.LocalSize
[0] % 2 != 0) {
1883 _mesa_glsl_error(&loc
, state
, "derivative_group_quadsNV must be used with a "
1884 "local group size whose first dimension "
1885 "is a multiple of 2\n");
1887 if (shader
->info
.Comp
.LocalSize
[1] % 2 != 0) {
1888 _mesa_glsl_error(&loc
, state
, "derivative_group_quadsNV must be used with a "
1889 "local group size whose second dimension "
1890 "is a multiple of 2\n");
1892 } else if (shader
->info
.Comp
.DerivativeGroup
== DERIVATIVE_GROUP_LINEAR
) {
1893 if ((shader
->info
.Comp
.LocalSize
[0] *
1894 shader
->info
.Comp
.LocalSize
[1] *
1895 shader
->info
.Comp
.LocalSize
[2]) % 4 != 0) {
1896 _mesa_glsl_error(&loc
, state
, "derivative_group_linearNV must be used with a "
1897 "local group size whose total number of invocations "
1898 "is a multiple of 4\n");
1905 case MESA_SHADER_FRAGMENT
:
1906 shader
->redeclares_gl_fragcoord
= state
->fs_redeclares_gl_fragcoord
;
1907 shader
->uses_gl_fragcoord
= state
->fs_uses_gl_fragcoord
;
1908 shader
->pixel_center_integer
= state
->fs_pixel_center_integer
;
1909 shader
->origin_upper_left
= state
->fs_origin_upper_left
;
1910 shader
->ARB_fragment_coord_conventions_enable
=
1911 state
->ARB_fragment_coord_conventions_enable
;
1912 shader
->EarlyFragmentTests
= state
->fs_early_fragment_tests
;
1913 shader
->InnerCoverage
= state
->fs_inner_coverage
;
1914 shader
->PostDepthCoverage
= state
->fs_post_depth_coverage
;
1915 shader
->PixelInterlockOrdered
= state
->fs_pixel_interlock_ordered
;
1916 shader
->PixelInterlockUnordered
= state
->fs_pixel_interlock_unordered
;
1917 shader
->SampleInterlockOrdered
= state
->fs_sample_interlock_ordered
;
1918 shader
->SampleInterlockUnordered
= state
->fs_sample_interlock_unordered
;
1919 shader
->BlendSupport
= state
->fs_blend_support
;
1923 /* Nothing to do. */
1927 shader
->bindless_sampler
= state
->bindless_sampler_specified
;
1928 shader
->bindless_image
= state
->bindless_image_specified
;
1929 shader
->bound_sampler
= state
->bound_sampler_specified
;
1930 shader
->bound_image
= state
->bound_image_specified
;
1933 /* src can be NULL if only the symbols found in the exec_list should be
1937 _mesa_glsl_copy_symbols_from_table(struct exec_list
*shader_ir
,
1938 struct glsl_symbol_table
*src
,
1939 struct glsl_symbol_table
*dest
)
1941 foreach_in_list (ir_instruction
, ir
, shader_ir
) {
1942 switch (ir
->ir_type
) {
1943 case ir_type_function
:
1944 dest
->add_function((ir_function
*) ir
);
1946 case ir_type_variable
: {
1947 ir_variable
*const var
= (ir_variable
*) ir
;
1949 if (var
->data
.mode
!= ir_var_temporary
)
1950 dest
->add_variable(var
);
1959 /* Explicitly copy the gl_PerVertex interface definitions because these
1960 * are needed to check they are the same during the interstage link.
1961 * They can’t necessarily be found via the exec_list because the members
1962 * might not be referenced. The GL spec still requires that they match
1965 const glsl_type
*iface
=
1966 src
->get_interface("gl_PerVertex", ir_var_shader_in
);
1968 dest
->add_interface(iface
->name
, iface
, ir_var_shader_in
);
1970 iface
= src
->get_interface("gl_PerVertex", ir_var_shader_out
);
1972 dest
->add_interface(iface
->name
, iface
, ir_var_shader_out
);
1979 assign_subroutine_indexes(struct _mesa_glsl_parse_state
*state
)
1984 for (j
= 0; j
< state
->num_subroutines
; j
++) {
1985 while (state
->subroutines
[j
]->subroutine_index
== -1) {
1986 for (k
= 0; k
< state
->num_subroutines
; k
++) {
1987 if (state
->subroutines
[k
]->subroutine_index
== index
)
1989 else if (k
== state
->num_subroutines
- 1) {
1990 state
->subroutines
[j
]->subroutine_index
= index
;
1999 add_builtin_defines(struct _mesa_glsl_parse_state
*state
,
2000 void (*add_builtin_define
)(struct glcpp_parser
*, const char *, int),
2001 struct glcpp_parser
*data
,
2005 unsigned gl_version
= state
->ctx
->Extensions
.Version
;
2006 gl_api api
= state
->ctx
->API
;
2008 if (gl_version
!= 0xff) {
2010 for (i
= 0; i
< state
->num_supported_versions
; i
++) {
2011 if (state
->supported_versions
[i
].ver
== version
&&
2012 state
->supported_versions
[i
].es
== es
) {
2013 gl_version
= state
->supported_versions
[i
].gl_ver
;
2018 if (i
== state
->num_supported_versions
)
2023 api
= API_OPENGLES2
;
2025 for (unsigned i
= 0;
2026 i
< ARRAY_SIZE(_mesa_glsl_supported_extensions
); ++i
) {
2027 const _mesa_glsl_extension
*extension
2028 = &_mesa_glsl_supported_extensions
[i
];
2029 if (extension
->compatible_with_state(state
, api
, gl_version
)) {
2030 add_builtin_define(data
, extension
->name
, 1);
2035 /* Implements parsing checks that we can't do during parsing */
2037 do_late_parsing_checks(struct _mesa_glsl_parse_state
*state
)
2039 if (state
->stage
== MESA_SHADER_COMPUTE
&& !state
->has_compute_shader()) {
2041 memset(&loc
, 0, sizeof(loc
));
2042 _mesa_glsl_error(&loc
, state
, "Compute shaders require "
2043 "GLSL 4.30 or GLSL ES 3.10");
2048 opt_shader_and_create_symbol_table(struct gl_context
*ctx
,
2049 struct glsl_symbol_table
*source_symbols
,
2050 struct gl_shader
*shader
)
2052 assert(shader
->CompileStatus
!= COMPILE_FAILURE
&&
2053 !shader
->ir
->is_empty());
2055 struct gl_shader_compiler_options
*options
=
2056 &ctx
->Const
.ShaderCompilerOptions
[shader
->Stage
];
2058 /* Do some optimization at compile time to reduce shader IR size
2059 * and reduce later work if the same shader is linked multiple times
2061 if (ctx
->Const
.GLSLOptimizeConservatively
) {
2062 /* Run it just once. */
2063 do_common_optimization(shader
->ir
, false, false, options
,
2064 ctx
->Const
.NativeIntegers
);
2066 /* Repeat it until it stops making changes. */
2067 while (do_common_optimization(shader
->ir
, false, false, options
,
2068 ctx
->Const
.NativeIntegers
))
2072 validate_ir_tree(shader
->ir
);
2074 enum ir_variable_mode other
;
2075 switch (shader
->Stage
) {
2076 case MESA_SHADER_VERTEX
:
2077 other
= ir_var_shader_in
;
2079 case MESA_SHADER_FRAGMENT
:
2080 other
= ir_var_shader_out
;
2083 /* Something invalid to ensure optimize_dead_builtin_uniforms
2084 * doesn't remove anything other than uniforms or constants.
2086 other
= ir_var_mode_count
;
2090 optimize_dead_builtin_variables(shader
->ir
, other
);
2092 validate_ir_tree(shader
->ir
);
2094 /* Retain any live IR, but trash the rest. */
2095 reparent_ir(shader
->ir
, shader
->ir
);
2097 /* Destroy the symbol table. Create a new symbol table that contains only
2098 * the variables and functions that still exist in the IR. The symbol
2099 * table will be used later during linking.
2101 * There must NOT be any freed objects still referenced by the symbol
2102 * table. That could cause the linker to dereference freed memory.
2104 * We don't have to worry about types or interface-types here because those
2105 * are fly-weights that are looked up by glsl_type.
2107 _mesa_glsl_copy_symbols_from_table(shader
->ir
, source_symbols
,
2112 can_skip_compile(struct gl_context
*ctx
, struct gl_shader
*shader
,
2113 const char *source
, bool force_recompile
)
2115 if (!force_recompile
) {
2118 disk_cache_compute_key(ctx
->Cache
, source
, strlen(source
),
2120 if (disk_cache_has_key(ctx
->Cache
, shader
->sha1
)) {
2121 /* We've seen this shader before and know it compiles */
2122 if (ctx
->_Shader
->Flags
& GLSL_CACHE_INFO
) {
2123 _mesa_sha1_format(buf
, shader
->sha1
);
2124 fprintf(stderr
, "deferring compile of shader: %s\n", buf
);
2126 shader
->CompileStatus
= COMPILE_SKIPPED
;
2128 free((void *)shader
->FallbackSource
);
2129 shader
->FallbackSource
= NULL
;
2134 /* We should only ever end up here if a re-compile has been forced by a
2135 * shader cache miss. In which case we can skip the compile if its
2136 * already been done by a previous fallback or the initial compile call.
2138 if (shader
->CompileStatus
== COMPILE_SUCCESS
)
2146 _mesa_glsl_compile_shader(struct gl_context
*ctx
, struct gl_shader
*shader
,
2147 bool dump_ast
, bool dump_hir
, bool force_recompile
)
2149 const char *source
= force_recompile
&& shader
->FallbackSource
?
2150 shader
->FallbackSource
: shader
->Source
;
2152 if (can_skip_compile(ctx
, shader
, source
, force_recompile
))
2155 struct _mesa_glsl_parse_state
*state
=
2156 new(shader
) _mesa_glsl_parse_state(ctx
, shader
->Stage
, shader
);
2158 if (ctx
->Const
.GenerateTemporaryNames
)
2159 (void) p_atomic_cmpxchg(&ir_variable::temporaries_allocate_names
,
2162 state
->error
= glcpp_preprocess(state
, &source
, &state
->info_log
,
2163 add_builtin_defines
, state
, ctx
);
2165 if (!state
->error
) {
2166 _mesa_glsl_lexer_ctor(state
, source
);
2167 _mesa_glsl_parse(state
);
2168 _mesa_glsl_lexer_dtor(state
);
2169 do_late_parsing_checks(state
);
2173 foreach_list_typed(ast_node
, ast
, link
, &state
->translation_unit
) {
2179 ralloc_free(shader
->ir
);
2180 shader
->ir
= new(shader
) exec_list
;
2181 if (!state
->error
&& !state
->translation_unit
.is_empty())
2182 _mesa_ast_to_hir(shader
->ir
, state
);
2184 if (!state
->error
) {
2185 validate_ir_tree(shader
->ir
);
2187 /* Print out the unoptimized IR. */
2189 _mesa_print_ir(stdout
, shader
->ir
, state
);
2193 if (shader
->InfoLog
)
2194 ralloc_free(shader
->InfoLog
);
2197 set_shader_inout_layout(shader
, state
);
2199 shader
->symbols
= new(shader
->ir
) glsl_symbol_table
;
2200 shader
->CompileStatus
= state
->error
? COMPILE_FAILURE
: COMPILE_SUCCESS
;
2201 shader
->InfoLog
= state
->info_log
;
2202 shader
->Version
= state
->language_version
;
2203 shader
->IsES
= state
->es_shader
;
2205 if (!state
->error
&& !shader
->ir
->is_empty()) {
2206 assign_subroutine_indexes(state
);
2207 lower_subroutine(shader
->ir
, state
);
2208 opt_shader_and_create_symbol_table(ctx
, state
->symbols
, shader
);
2211 if (!force_recompile
) {
2212 free((void *)shader
->FallbackSource
);
2213 shader
->FallbackSource
= NULL
;
2216 delete state
->symbols
;
2219 if (ctx
->Cache
&& shader
->CompileStatus
== COMPILE_SUCCESS
) {
2221 disk_cache_put_key(ctx
->Cache
, shader
->sha1
);
2222 if (ctx
->_Shader
->Flags
& GLSL_CACHE_INFO
) {
2223 _mesa_sha1_format(sha1_buf
, shader
->sha1
);
2224 fprintf(stderr
, "marking shader: %s\n", sha1_buf
);
2231 * Do the set of common optimizations passes
2233 * \param ir List of instructions to be optimized
2234 * \param linked Is the shader linked? This enables
2235 * optimizations passes that remove code at
2236 * global scope and could cause linking to
2238 * \param uniform_locations_assigned Have locations already been assigned for
2239 * uniforms? This prevents the declarations
2240 * of unused uniforms from being removed.
2241 * The setting of this flag only matters if
2242 * \c linked is \c true.
2243 * \param options The driver's preferred shader options.
2244 * \param native_integers Selects optimizations that depend on the
2245 * implementations supporting integers
2246 * natively (as opposed to supporting
2247 * integers in floating point registers).
2250 do_common_optimization(exec_list
*ir
, bool linked
,
2251 bool uniform_locations_assigned
,
2252 const struct gl_shader_compiler_options
*options
,
2253 bool native_integers
)
2255 const bool debug
= false;
2256 bool progress
= false;
2258 #define OPT(PASS, ...) do { \
2260 fprintf(stderr, "START GLSL optimization %s\n", #PASS); \
2261 const bool opt_progress = PASS(__VA_ARGS__); \
2262 progress = opt_progress || progress; \
2264 _mesa_print_ir(stderr, ir, NULL); \
2265 fprintf(stderr, "GLSL optimization %s: %s progress\n", \
2266 #PASS, opt_progress ? "made" : "no"); \
2268 progress = PASS(__VA_ARGS__) || progress; \
2272 OPT(lower_instructions
, ir
, SUB_TO_ADD_NEG
);
2275 OPT(do_function_inlining
, ir
);
2276 OPT(do_dead_functions
, ir
);
2277 OPT(do_structure_splitting
, ir
);
2279 propagate_invariance(ir
);
2280 OPT(do_if_simplification
, ir
);
2281 OPT(opt_flatten_nested_if_blocks
, ir
);
2282 OPT(opt_conditional_discard
, ir
);
2283 OPT(do_copy_propagation_elements
, ir
);
2285 if (options
->OptimizeForAOS
&& !linked
)
2286 OPT(opt_flip_matrices
, ir
);
2288 if (linked
&& options
->OptimizeForAOS
) {
2289 OPT(do_vectorize
, ir
);
2293 OPT(do_dead_code
, ir
, uniform_locations_assigned
);
2295 OPT(do_dead_code_unlinked
, ir
);
2296 OPT(do_dead_code_local
, ir
);
2297 OPT(do_tree_grafting
, ir
);
2298 OPT(do_constant_propagation
, ir
);
2300 OPT(do_constant_variable
, ir
);
2302 OPT(do_constant_variable_unlinked
, ir
);
2303 OPT(do_constant_folding
, ir
);
2304 OPT(do_minmax_prune
, ir
);
2305 OPT(do_rebalance_tree
, ir
);
2306 OPT(do_algebraic
, ir
, native_integers
, options
);
2307 OPT(do_lower_jumps
, ir
, true, true, options
->EmitNoMainReturn
,
2308 options
->EmitNoCont
, options
->EmitNoLoops
);
2309 OPT(do_vec_index_to_swizzle
, ir
);
2310 OPT(lower_vector_insert
, ir
, false);
2311 OPT(optimize_swizzles
, ir
);
2313 OPT(optimize_split_arrays
, ir
, linked
);
2314 OPT(optimize_redundant_jumps
, ir
);
2316 if (options
->MaxUnrollIterations
) {
2317 loop_state
*ls
= analyze_loop_variables(ir
);
2318 if (ls
->loop_found
) {
2319 bool loop_progress
= unroll_loops(ir
, ls
, options
);
2320 while (loop_progress
) {
2321 loop_progress
= false;
2322 loop_progress
|= do_constant_propagation(ir
);
2323 loop_progress
|= do_if_simplification(ir
);
2325 /* Some drivers only call do_common_optimization() once rather
2326 * than in a loop. So we must call do_lower_jumps() after
2327 * unrolling a loop because for drivers that use LLVM validation
2328 * will fail if a jump is not the last instruction in the block.
2329 * For example the following will fail LLVM validation:
2334 * (assign (x) (var_ref v124) (expression int + (var_ref v124)
2335 * (constant int (1)) ) )
2338 loop_progress
|= do_lower_jumps(ir
, true, true,
2339 options
->EmitNoMainReturn
,
2340 options
->EmitNoCont
,
2341 options
->EmitNoLoops
);
2343 progress
|= loop_progress
;