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,
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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, size_t *size)
45 ssize_t total_read = 0;
46 int fd = open(file_name, O_RDONLY);
53 if (fstat(fd, & st) == 0) {
54 text = (char *) talloc_size(ctx, st.st_size + 1);
57 ssize_t bytes = read(fd, text + total_read,
58 st.st_size - total_read);
70 } while (total_read < st.st_size);
72 text[total_read] = '\0';
84 usage_fail(const char *name)
86 printf("%s <filename.frag|filename.vert>\n", name);
95 const struct option compiler_opts[] = {
96 { "dump-ast", 0, &dump_ast, 1 },
97 { "dump-lir", 0, &dump_lir, 1 },
98 { "link", 0, &do_link, 1 },
103 compile_shader(struct glsl_shader *shader)
105 struct _mesa_glsl_parse_state *state;
107 state = talloc_zero(talloc_parent(shader), struct _mesa_glsl_parse_state);
109 switch (shader->Type) {
110 case GL_VERTEX_SHADER: state->target = vertex_shader; break;
111 case GL_FRAGMENT_SHADER: state->target = fragment_shader; break;
112 case GL_GEOMETRY_SHADER: state->target = geometry_shader; break;
115 state->scanner = NULL;
116 state->translation_unit.make_empty();
117 state->symbols = new(shader) glsl_symbol_table;
118 state->info_log = talloc_strdup(shader, "");
119 state->error = false;
120 state->temp_index = 0;
121 state->loop_or_switch_nesting = NULL;
122 state->ARB_texture_rectangle_enable = true;
124 /* Create a new context for the preprocessor output. Ultimately, this
125 * should probably be the parser context, but there isn't one yet.
127 const char *source = shader->Source;
128 state->error = preprocess(shader, &source, &state->info_log);
131 _mesa_glsl_lexer_ctor(state, source);
132 _mesa_glsl_parse(state);
133 _mesa_glsl_lexer_dtor(state);
137 foreach_list_const(n, &state->translation_unit) {
138 ast_node *ast = exec_node_data(ast_node, n, link);
144 shader->ir.make_empty();
145 if (!state->error && !state->translation_unit.is_empty())
146 _mesa_ast_to_hir(&shader->ir, state);
148 validate_ir_tree(&shader->ir);
150 /* Optimization passes */
151 if (!state->error && !shader->ir.is_empty()) {
156 progress = do_function_inlining(&shader->ir) || progress;
157 progress = do_if_simplification(&shader->ir) || progress;
158 progress = do_copy_propagation(&shader->ir) || progress;
159 progress = do_dead_code_local(&shader->ir) || progress;
160 progress = do_dead_code_unlinked(&shader->ir) || progress;
161 progress = do_constant_variable_unlinked(&shader->ir) || progress;
162 progress = do_constant_folding(&shader->ir) || progress;
163 progress = do_vec_index_to_swizzle(&shader->ir) || progress;
164 progress = do_swizzle_swizzle(&shader->ir) || progress;
168 validate_ir_tree(&shader->ir);
170 /* Print out the resulting IR */
171 if (!state->error && dump_lir) {
172 _mesa_print_ir(&shader->ir, state);
175 shader->symbols = state->symbols;
176 shader->CompileStatus = !state->error;
179 talloc_free(shader->InfoLog);
181 shader->InfoLog = state->info_log;
189 main(int argc, char **argv)
191 int status = EXIT_SUCCESS;
195 while ((c = getopt_long(argc, argv, "", compiler_opts, &idx)) != -1)
202 struct glsl_program *whole_program;
204 whole_program = talloc_zero (NULL, struct glsl_program);
205 assert(whole_program != NULL);
207 for (/* empty */; argc > optind; optind++) {
208 whole_program->Shaders = (struct glsl_shader **)
209 talloc_realloc(whole_program, whole_program->Shaders,
210 struct glsl_shader *, whole_program->NumShaders + 1);
211 assert(whole_program->Shaders != NULL);
213 struct glsl_shader *shader = talloc_zero(whole_program, glsl_shader);
215 whole_program->Shaders[whole_program->NumShaders] = shader;
216 whole_program->NumShaders++;
218 const unsigned len = strlen(argv[optind]);
222 const char *const ext = & argv[optind][len - 5];
223 if (strncmp(".vert", ext, 5) == 0)
224 shader->Type = GL_VERTEX_SHADER;
225 else if (strncmp(".geom", ext, 5) == 0)
226 shader->Type = GL_GEOMETRY_SHADER;
227 else if (strncmp(".frag", ext, 5) == 0)
228 shader->Type = GL_FRAGMENT_SHADER;
232 shader->Source = load_text_file(whole_program,
233 argv[optind], &shader->SourceLen);
234 if (shader->Source == NULL) {
235 printf("File \"%s\" does not exist.\n", argv[optind]);
239 compile_shader(shader);
241 if (!shader->CompileStatus) {
242 printf("Info log for %s:\n%s\n", argv[optind], shader->InfoLog);
243 status = EXIT_FAILURE;
248 if ((status == EXIT_SUCCESS) && do_link) {
249 link_shaders(whole_program);
250 status = (whole_program->LinkStatus) ? EXIT_SUCCESS : EXIT_FAILURE;
253 talloc_free(whole_program);