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27 * This file is the main() routine and scaffolding for producing
28 * builtin_compiler (which doesn't include builtins itself and is used
29 * to generate the profile information for builtin_function.cpp), and
30 * for glsl_compiler (which does include builtins and can be used to
31 * offline compile GLSL code and examine the resulting GLSL IR.
35 #include "glsl_parser_extras.h"
36 #include "ir_optimization.h"
37 #include "ir_print_visitor.h"
39 #include "loop_analysis.h"
40 #include "standalone_scaffolding.h"
43 initialize_context(struct gl_context *ctx, gl_api api)
45 initialize_context_to_defaults(ctx, api);
47 /* The standalone compiler needs to claim support for almost
48 * everything in order to compile the built-in functions.
50 ctx->Const.GLSLVersion = 140;
52 ctx->Const.MaxClipPlanes = 8;
53 ctx->Const.MaxDrawBuffers = 2;
55 /* More than the 1.10 minimum to appease parser tests taken from
56 * apps that (hopefully) already checked the number of coords.
58 ctx->Const.MaxTextureCoordUnits = 4;
60 ctx->Driver.NewShader = _mesa_new_shader;
63 /* Returned string will have 'ctx' as its ralloc owner. */
65 load_text_file(void *ctx, const char *file_name)
69 size_t total_read = 0;
70 FILE *fp = fopen(file_name, "rb");
76 fseek(fp, 0L, SEEK_END);
78 fseek(fp, 0L, SEEK_SET);
80 text = (char *) ralloc_size(ctx, size + 1);
83 size_t bytes = fread(text + total_read,
84 1, size - total_read, fp);
85 if (bytes < size - total_read) {
96 } while (total_read < size);
98 text[total_read] = '\0';
112 const struct option compiler_opts[] = {
113 { "glsl-es", 0, &glsl_es, 1 },
114 { "dump-ast", 0, &dump_ast, 1 },
115 { "dump-hir", 0, &dump_hir, 1 },
116 { "dump-lir", 0, &dump_lir, 1 },
117 { "link", 0, &do_link, 1 },
122 * \brief Print proper usage and exit with failure.
125 usage_fail(const char *name)
129 "usage: %s [options] <file.vert | file.geom | file.frag>\n"
131 "Possible options are:\n";
132 printf(header, name, name);
133 for (const struct option *o = compiler_opts; o->name != 0; ++o) {
134 printf(" --%s\n", o->name);
141 compile_shader(struct gl_context *ctx, struct gl_shader *shader)
143 struct _mesa_glsl_parse_state *state =
144 new(shader) _mesa_glsl_parse_state(ctx, shader->Type, shader);
146 const char *source = shader->Source;
147 state->error = preprocess(state, &source, &state->info_log,
148 state->extensions, ctx->API) != 0;
151 _mesa_glsl_lexer_ctor(state, source);
152 _mesa_glsl_parse(state);
153 _mesa_glsl_lexer_dtor(state);
157 foreach_list_const(n, &state->translation_unit) {
158 ast_node *ast = exec_node_data(ast_node, n, link);
164 shader->ir = new(shader) exec_list;
165 if (!state->error && !state->translation_unit.is_empty())
166 _mesa_ast_to_hir(shader->ir, state);
168 /* Print out the unoptimized IR. */
169 if (!state->error && dump_hir) {
170 validate_ir_tree(shader->ir);
171 _mesa_print_ir(shader->ir, state);
174 /* Optimization passes */
175 if (!state->error && !shader->ir->is_empty()) {
178 progress = do_common_optimization(shader->ir, false, false, 32);
181 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;
192 shader->Version = state->language_version;
193 memcpy(shader->builtins_to_link, state->builtins_to_link,
194 sizeof(shader->builtins_to_link[0]) * state->num_builtins_to_link);
195 shader->num_builtins_to_link = state->num_builtins_to_link;
198 ralloc_free(shader->InfoLog);
200 shader->InfoLog = state->info_log;
202 /* Retain any live IR, but trash the rest. */
203 reparent_ir(shader->ir, shader);
211 main(int argc, char **argv)
213 int status = EXIT_SUCCESS;
214 struct gl_context local_ctx;
215 struct gl_context *ctx = &local_ctx;
219 while ((c = getopt_long(argc, argv, "", compiler_opts, &idx)) != -1)
226 initialize_context(ctx, (glsl_es) ? API_OPENGLES2 : API_OPENGL);
228 struct gl_shader_program *whole_program;
230 whole_program = rzalloc (NULL, struct gl_shader_program);
231 assert(whole_program != NULL);
232 whole_program->InfoLog = ralloc_strdup(whole_program, "");
234 for (/* empty */; argc > optind; optind++) {
235 whole_program->Shaders =
236 reralloc(whole_program, whole_program->Shaders,
237 struct gl_shader *, whole_program->NumShaders + 1);
238 assert(whole_program->Shaders != NULL);
240 struct gl_shader *shader = rzalloc(whole_program, gl_shader);
242 whole_program->Shaders[whole_program->NumShaders] = shader;
243 whole_program->NumShaders++;
245 const unsigned len = strlen(argv[optind]);
249 const char *const ext = & argv[optind][len - 5];
250 if (strncmp(".vert", ext, 5) == 0 || strncmp(".glsl", ext, 5) == 0)
251 shader->Type = GL_VERTEX_SHADER;
252 else if (strncmp(".geom", ext, 5) == 0)
253 shader->Type = GL_GEOMETRY_SHADER;
254 else if (strncmp(".frag", ext, 5) == 0)
255 shader->Type = GL_FRAGMENT_SHADER;
259 shader->Source = load_text_file(whole_program, argv[optind]);
260 if (shader->Source == NULL) {
261 printf("File \"%s\" does not exist.\n", argv[optind]);
265 compile_shader(ctx, shader);
267 if (!shader->CompileStatus) {
268 printf("Info log for %s:\n%s\n", argv[optind], shader->InfoLog);
269 status = EXIT_FAILURE;
274 if ((status == EXIT_SUCCESS) && do_link) {
275 link_shaders(ctx, whole_program);
276 status = (whole_program->LinkStatus) ? EXIT_SUCCESS : EXIT_FAILURE;
278 if (strlen(whole_program->InfoLog) > 0)
279 printf("Info log for linking:\n%s\n", whole_program->InfoLog);
282 for (unsigned i = 0; i < MESA_SHADER_TYPES; i++)
283 ralloc_free(whole_program->_LinkedShaders[i]);
285 ralloc_free(whole_program);
286 _mesa_glsl_release_types();
287 _mesa_glsl_release_functions();