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
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21 * DEALINGS IN THE SOFTWARE.
27 #include <sys/types.h>
33 #include "glsl_parser_extras.h"
34 #include "glsl_parser.h"
35 #include "ir_optimization.h"
36 #include "ir_print_visitor.h"
39 /* Returned string will have 'ctx' as its talloc owner. */
41 load_text_file(void *ctx, const char *file_name)
45 ssize_t total_read = 0;
46 int fd = open(file_name, O_RDONLY);
52 if (fstat(fd, & st) == 0) {
53 text = (char *) talloc_size(ctx, st.st_size + 1);
56 ssize_t bytes = read(fd, text + total_read,
57 st.st_size - total_read);
69 } while (total_read < st.st_size);
71 text[total_read] = '\0';
82 usage_fail(const char *name)
84 printf("%s <filename.frag|filename.vert>\n", name);
94 const struct option compiler_opts[] = {
95 { "dump-ast", 0, &dump_ast, 1 },
96 { "dump-hir", 0, &dump_hir, 1 },
97 { "dump-lir", 0, &dump_lir, 1 },
98 { "link", 0, &do_link, 1 },
103 steal_memory(ir_instruction *ir, void *new_ctx)
105 talloc_steal(new_ctx, ir);
109 compile_shader(struct gl_shader *shader)
111 struct _mesa_glsl_parse_state *state;
112 struct gl_extensions ext;
114 state = talloc_zero(talloc_parent(shader), struct _mesa_glsl_parse_state);
116 switch (shader->Type) {
117 case GL_VERTEX_SHADER: state->target = vertex_shader; break;
118 case GL_FRAGMENT_SHADER: state->target = fragment_shader; break;
119 case GL_GEOMETRY_SHADER: state->target = geometry_shader; break;
122 state->scanner = NULL;
123 state->translation_unit.make_empty();
124 state->symbols = new(shader) glsl_symbol_table;
125 state->info_log = talloc_strdup(shader, "");
126 state->error = false;
127 state->temp_index = 0;
128 state->loop_or_switch_nesting = NULL;
129 state->ARB_texture_rectangle_enable = true;
131 memset(&ext, 0, sizeof(ext));
132 state->extensions = &ext;
133 state->Const.MaxDrawBuffers = 2;
134 state->Const.MaxTextureCoords = 4;
136 const char *source = shader->Source;
137 state->error = preprocess(state, &source, &state->info_log, &ext);
140 _mesa_glsl_lexer_ctor(state, source);
141 _mesa_glsl_parse(state);
142 _mesa_glsl_lexer_dtor(state);
146 foreach_list_const(n, &state->translation_unit) {
147 ast_node *ast = exec_node_data(ast_node, n, link);
153 shader->ir = new(shader) exec_list;
154 if (!state->error && !state->translation_unit.is_empty())
155 _mesa_ast_to_hir(shader->ir, state);
157 validate_ir_tree(shader->ir);
159 /* Print out the unoptimized IR. */
160 if (!state->error && dump_hir) {
161 _mesa_print_ir(shader->ir, state);
164 /* Optimization passes */
165 if (!state->error && !shader->ir->is_empty()) {
170 progress = do_function_inlining(shader->ir) || progress;
171 progress = do_if_simplification(shader->ir) || progress;
172 progress = do_copy_propagation(shader->ir) || progress;
173 progress = do_dead_code_local(shader->ir) || progress;
174 progress = do_dead_code_unlinked(state, shader->ir) || progress;
175 progress = do_constant_variable_unlinked(shader->ir) || progress;
176 progress = do_constant_folding(shader->ir) || progress;
177 progress = do_vec_index_to_swizzle(shader->ir) || progress;
178 progress = do_vec_index_to_cond_assign(shader->ir) || progress;
179 progress = do_swizzle_swizzle(shader->ir) || progress;
183 validate_ir_tree(shader->ir);
185 /* Print out the resulting IR */
186 if (!state->error && dump_lir) {
187 _mesa_print_ir(shader->ir, state);
190 shader->symbols = state->symbols;
191 shader->CompileStatus = !state->error;
194 talloc_free(shader->InfoLog);
196 shader->InfoLog = state->info_log;
198 /* Retain any live IR, but trash the rest. */
199 foreach_list(node, shader->ir) {
200 visit_tree((ir_instruction *) node, steal_memory, shader);
209 main(int argc, char **argv)
211 int status = EXIT_SUCCESS;
215 while ((c = getopt_long(argc, argv, "", compiler_opts, &idx)) != -1)
222 struct gl_shader_program *whole_program;
224 whole_program = talloc_zero (NULL, struct gl_shader_program);
225 assert(whole_program != NULL);
227 for (/* empty */; argc > optind; optind++) {
228 whole_program->Shaders = (struct gl_shader **)
229 talloc_realloc(whole_program, whole_program->Shaders,
230 struct gl_shader *, whole_program->NumShaders + 1);
231 assert(whole_program->Shaders != NULL);
233 struct gl_shader *shader = talloc_zero(whole_program, gl_shader);
235 whole_program->Shaders[whole_program->NumShaders] = shader;
236 whole_program->NumShaders++;
238 const unsigned len = strlen(argv[optind]);
242 const char *const ext = & argv[optind][len - 5];
243 if (strncmp(".vert", ext, 5) == 0)
244 shader->Type = GL_VERTEX_SHADER;
245 else if (strncmp(".geom", ext, 5) == 0)
246 shader->Type = GL_GEOMETRY_SHADER;
247 else if (strncmp(".frag", ext, 5) == 0)
248 shader->Type = GL_FRAGMENT_SHADER;
252 shader->Source = load_text_file(whole_program, argv[optind]);
253 if (shader->Source == NULL) {
254 printf("File \"%s\" does not exist.\n", argv[optind]);
258 compile_shader(shader);
260 if (!shader->CompileStatus) {
261 printf("Info log for %s:\n%s\n", argv[optind], shader->InfoLog);
262 status = EXIT_FAILURE;
267 if ((status == EXIT_SUCCESS) && do_link) {
268 link_shaders(whole_program);
269 status = (whole_program->LinkStatus) ? EXIT_SUCCESS : EXIT_FAILURE;
271 if (strlen(whole_program->InfoLog) > 0)
272 printf("Info log for linking:\n%s\n", whole_program->InfoLog);
275 talloc_free(whole_program);
276 _mesa_glsl_release_types();