2 # -*- coding: utf-8 -*-
4 from __future__ import with_statement
10 from subprocess import Popen, PIPE
13 # Local module: generator for texture lookup builtins
14 from texture_builtins import generate_texture_functions
16 builtins_dir = path.join(path.dirname(path.abspath(__file__)), "..")
18 # Get the path to the standalone GLSL compiler
20 print "Usage:", argv[0], "<path to compiler>"
25 # Read the files in builtins/ir/*...add them to the supplied dictionary.
26 def read_ir_files(fs):
27 for filename in glob(path.join(path.join(builtins_dir, 'ir'), '*')):
28 with open(filename) as f:
29 fs[path.basename(filename)] = f.read()
31 # Return a dictionary containing all builtin definitions (even generated)
32 def get_builtin_definitions():
34 generate_texture_functions(fs)
39 # Work around MSVC's 65535 byte limit by outputting an array of characters
40 # rather than actual string literals.
42 #t = "/* Warning: length " + repr(len(s)) + " too large */\n"
44 for c in re.sub('\s\s+', ' ', s):
49 return '{' + t[:-1] + '}'
51 t = s.replace('\\', '\\\\').replace('"', '\\"').replace('\n', '\\n"\n "')
52 return ' "' + t + '"\n'
54 def write_function_definitions():
55 fs = get_builtin_definitions()
56 for k, v in sorted(fs.iteritems()):
57 print 'static const char builtin_' + k + '[] ='
58 print stringify(v), ';'
60 def run_compiler(args):
61 command = [compiler, '--dump-lir'] + args
62 p = Popen(command, 1, stdout=PIPE, shell=False)
63 output = p.communicate()[0]
65 # Clean up output a bit by killing whitespace before a closing paren.
66 kill_paren_whitespace = re.compile(r'[ \n]*\)', re.MULTILINE)
67 output = kill_paren_whitespace.sub(')', output)
69 # Also toss any duplicate newlines
70 output = output.replace('\n\n', '\n')
72 return (output, p.returncode)
74 def write_profile(filename, profile):
75 (proto_ir, returncode) = run_compiler([filename])
78 print '#error builtins profile', profile, 'failed to compile'
81 # Kill any global variable declarations. We don't want them.
82 kill_globals = re.compile(r'^\(declare.*\n', re.MULTILINE)
83 proto_ir = kill_globals.sub('', proto_ir)
85 print 'static const char prototypes_for_' + profile + '[] ='
86 print stringify(proto_ir), ';'
88 # Print a table of all the functions (not signatures) referenced.
89 # This is done so we can avoid bothering with a hash table in the C++ code.
91 function_names = set()
92 for func in re.finditer(r'\(function (.+)\n', proto_ir):
93 function_names.add(func.group(1))
95 print 'static const char *functions_for_' + profile + ' [] = {'
96 for func in sorted(function_names):
97 print ' builtin_' + func + ','
100 def write_profiles():
101 profiles = get_profile_list()
102 for (filename, profile) in profiles:
103 write_profile(filename, profile)
105 def get_profile_list():
107 for pfile in sorted(glob(path.join(path.join(builtins_dir, 'profiles'), '*'))):
108 profiles.append((pfile, path.basename(pfile).replace('.', '_')))
111 if __name__ == "__main__":
112 print """/* DO NOT MODIFY - automatically generated by generate_builtins.py */
114 * Copyright © 2010 Intel Corporation
116 * Permission is hereby granted, free of charge, to any person obtaining a
117 * copy of this software and associated documentation files (the "Software"),
118 * to deal in the Software without restriction, including without limitation
119 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
120 * and/or sell copies of the Software, and to permit persons to whom the
121 * Software is furnished to do so, subject to the following conditions:
123 * The above copyright notice and this permission notice (including the next
124 * paragraph) shall be included in all copies or substantial portions of the
127 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
128 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
129 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
130 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
131 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
132 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
133 * DEALINGS IN THE SOFTWARE.
137 #include "main/core.h" /* for struct gl_shader */
138 #include "glsl_parser_extras.h"
139 #include "ir_reader.h"
143 extern "C" struct gl_shader *
144 _mesa_new_shader(struct gl_context *ctx, GLuint name, GLenum type);
147 read_builtins(GLenum target, const char *protos, const char **functions, unsigned count)
149 struct gl_context fakeCtx;
150 fakeCtx.API = API_OPENGL;
151 fakeCtx.Const.GLSLVersion = 130;
152 fakeCtx.Extensions.ARB_ES2_compatibility = true;
153 gl_shader *sh = _mesa_new_shader(NULL, 0, target);
154 struct _mesa_glsl_parse_state *st =
155 new(sh) _mesa_glsl_parse_state(&fakeCtx, target, sh);
157 st->language_version = 130;
158 st->symbols->language_version = 130;
159 st->ARB_texture_rectangle_enable = true;
160 st->EXT_texture_array_enable = true;
161 _mesa_glsl_initialize_types(st);
163 sh->ir = new(sh) exec_list;
164 sh->symbols = st->symbols;
166 /* Read the IR containing the prototypes */
167 _mesa_glsl_read_ir(st, sh->ir, protos, true);
169 /* Read ALL the function bodies, telling the IR reader not to scan for
170 * prototypes (we've already created them). The IR reader will skip any
171 * signature that does not already exist as a prototype.
173 for (unsigned i = 0; i < count; i++) {
174 _mesa_glsl_read_ir(st, sh->ir, functions[i], false);
177 printf("error reading builtin: %.35s ...\\n", functions[i]);
178 printf("Info log:\\n%s\\n", st->info_log);
184 reparent_ir(sh->ir, sh);
191 write_function_definitions()
194 profiles = get_profile_list()
196 print 'static gl_shader *builtin_profiles[%d];' % len(profiles)
199 void *builtin_mem_ctx = NULL;
202 _mesa_glsl_release_functions(void)
204 ralloc_free(builtin_mem_ctx);
205 builtin_mem_ctx = NULL;
206 memset(builtin_profiles, 0, sizeof(builtin_profiles));
210 _mesa_read_profile(struct _mesa_glsl_parse_state *state,
212 const char *prototypes,
213 const char **functions,
216 gl_shader *sh = builtin_profiles[profile_index];
219 sh = read_builtins(GL_VERTEX_SHADER, prototypes, functions, count);
220 ralloc_steal(builtin_mem_ctx, sh);
221 builtin_profiles[profile_index] = sh;
224 state->builtins_to_link[state->num_builtins_to_link] = sh;
225 state->num_builtins_to_link++;
229 _mesa_glsl_initialize_functions(struct _mesa_glsl_parse_state *state)
231 if (builtin_mem_ctx == NULL) {
232 builtin_mem_ctx = ralloc_context(NULL); // "GLSL built-in functions"
233 memset(&builtin_profiles, 0, sizeof(builtin_profiles));
236 state->num_builtins_to_link = 0;
240 for (filename, profile) in profiles:
241 if profile.endswith('_vert'):
242 check = 'state->target == vertex_shader && '
243 elif profile.endswith('_frag'):
244 check = 'state->target == fragment_shader && '
246 version = re.sub(r'_(vert|frag)$', '', profile)
247 if version.isdigit():
248 check += 'state->language_version == ' + version
249 else: # an extension name
250 check += 'state->' + version + '_enable'
252 print ' if (' + check + ') {'
253 print ' _mesa_read_profile(state, %d,' % i
254 print ' prototypes_for_' + profile + ','
255 print ' functions_for_' + profile + ','
256 print ' Elements(functions_for_' + profile + '));'