diff options
Diffstat (limited to 'src/glsl/builtins/tools/generate_builtins.py')
| -rwxr-xr-x | src/glsl/builtins/tools/generate_builtins.py | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/glsl/builtins/tools/generate_builtins.py b/src/glsl/builtins/tools/generate_builtins.py new file mode 100755 index 0000000000..2eb67e398a --- /dev/null +++ b/src/glsl/builtins/tools/generate_builtins.py @@ -0,0 +1,207 @@ +#!/usr/bin/python +# -*- coding: UTF-8 -*- + +import re, glob, sys +from os import path +from subprocess import Popen, PIPE + +# Local module: generator for texture lookup builtins +from texture_builtins import generate_texture_functions + +builtins_dir = path.join(path.dirname(path.abspath(__file__)), "..") + +# Read the files in builtins/ir/*...add them to the supplied dictionary. +def read_ir_files(fs): + for filename in glob.glob(path.join(path.join(builtins_dir, 'ir'), '*')): + with open(filename) as f: + fs[path.basename(filename)] = f.read() + +# Return a dictionary containing all builtin definitions (even generated) +def get_builtin_definitions(): + fs = {} + generate_texture_functions(fs) + read_ir_files(fs) + return fs + +def stringify(s): + t = s.replace('\\', '\\\\').replace('"', '\\"').replace('\n', '\\n"\n "') + return ' "' + t + '"\n' + +def write_function_definitions(): + fs = get_builtin_definitions() + for k, v in fs.iteritems(): + print 'static const char *builtin_' + k + ' =' + print stringify(v), ';' + +def run_compiler(args): + compiler_path = path.join(path.join(builtins_dir, '..'), 'glsl_compiler') + command = [compiler_path, '--dump-lir'] + args + p = Popen(command, 1, stdout=PIPE, shell=False) + output = p.communicate()[0] + return (output, p.returncode) + +def write_profile(filename, profile): + (proto_ir, returncode) = run_compiler([filename]) + + if returncode != 0: + print '#error builtins profile', profile, 'failed to compile' + return + + # Kill any global variable declarations. We don't want them. + kill_globals = re.compile(r'^\(declare.*\n', re.MULTILINE); + proto_ir = kill_globals.sub('', proto_ir) + + print 'static const char *prototypes_for_' + profile + ' =' + print stringify(proto_ir), ';' + + # Print a table of all the functions (not signatures) referenced. + # This is done so we can avoid bothering with a hash table in the C++ code. + + function_names = set() + for func in re.finditer(r'\(function (.+)\n', proto_ir): + function_names.add(func.group(1)) + + print 'static const char *functions_for_' + profile + ' [] = {' + for func in function_names: + print ' builtin_' + func + ',' + print '};' + +def write_profiles(): + profiles = get_profile_list() + for (filename, profile) in profiles: + write_profile(filename, profile) + +def get_profile_list(): + profiles = [] + for pfile in glob.glob(path.join(path.join(builtins_dir, 'profiles'), '*')): + profiles.append((pfile, path.basename(pfile).replace('.', '_'))) + return profiles + +if __name__ == "__main__": + print """/* DO NOT MODIFY - automatically generated by generate_builtins.py */ +/* + * Copyright © 2010 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include <stdio.h> +#include "main/compiler.h" +#include "glsl_parser_extras.h" +#include "ir_reader.h" +#include "program.h" +#include "ast.h" + +extern "C" struct gl_shader * +_mesa_new_shader(GLcontext *ctx, GLuint name, GLenum type); + +gl_shader * +read_builtins(GLenum target, const char *protos, const char **functions, unsigned count) +{ + gl_shader *sh = _mesa_new_shader(NULL, 0, target); + struct _mesa_glsl_parse_state *st = + new(sh) _mesa_glsl_parse_state(NULL, target, sh); + + st->language_version = 130; + st->ARB_texture_rectangle_enable = true; + st->EXT_texture_array_enable = true; + _mesa_glsl_initialize_types(st); + + sh->ir = new(sh) exec_list; + sh->symbols = st->symbols; + + /* Read the IR containing the prototypes */ + _mesa_glsl_read_ir(st, sh->ir, protos, true); + + /* Read ALL the function bodies, telling the IR reader not to scan for + * prototypes (we've already created them). The IR reader will skip any + * signature that does not already exist as a prototype. + */ + for (unsigned i = 0; i < count; i++) { + _mesa_glsl_read_ir(st, sh->ir, functions[i], false); + + if (st->error) { + printf("error reading builtin: %.35s ...\\n", functions[i]); + talloc_free(sh); + return NULL; + } + } + + reparent_ir(sh->ir, sh); + delete st; + + return sh; +} +""" + + write_function_definitions() + write_profiles() + + print """ +void *builtin_mem_ctx = NULL; + +void +_mesa_glsl_release_functions(void) +{ + talloc_free(builtin_mem_ctx); +} + +void +_mesa_glsl_initialize_functions(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + if (builtin_mem_ctx == NULL) + builtin_mem_ctx = talloc_init("GLSL built-in functions"); + + state->num_builtins_to_link = 0; +""" + + profiles = get_profile_list() + for (filename, profile) in profiles: + if profile.endswith('_vert'): + check = 'state->target == vertex_shader && ' + elif profile.endswith('_frag'): + check = 'state->target == fragment_shader && ' + + version = re.sub(r'_(vert|frag)$', '', profile) + if version.isdigit(): + check += 'state->language_version == ' + version + else: # an extension name + check += 'state->' + version + '_enable' + + print ' if (' + check + ') {' + print ' static gl_shader *sh = NULL;' + print ' if (sh == NULL) {' + print ' sh = read_builtins(GL_VERTEX_SHADER,' + print ' prototypes_for_' + profile + ',' + print ' functions_for_' + profile + ',' + print ' Elements(functions_for_' + profile, + print '));' + print ' talloc_steal(builtin_mem_ctx, sh);' + print ' }' + print + print ' import_prototypes(sh->ir, instructions, state->symbols,' + print ' state);' + print ' state->builtins_to_link[state->num_builtins_to_link] = sh;' + print ' state->num_builtins_to_link++;' + print ' }' + print + print '}' + |