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26 #include "glsl_parser_extras.h"
27 #include "glsl_parser.h"
28 #include "ir_optimization.h"
29 #include "ir_print_visitor.h"
31 #include "loop_analysis.h"
33 extern "C" struct gl_shader *
34 _mesa_new_shader(struct gl_context *ctx, GLuint name, GLenum type);
37 _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
38 struct gl_shader *sh);
40 /* Copied from shader_api.c for the stand-alone compiler.
43 _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
50 _mesa_new_shader(struct gl_context *ctx, GLuint name, GLenum type)
52 struct gl_shader *shader;
56 assert(type == GL_FRAGMENT_SHADER || type == GL_VERTEX_SHADER);
57 shader = rzalloc(NULL, struct gl_shader);
67 initialize_context(struct gl_context *ctx, gl_api api)
69 memset(ctx, 0, sizeof(*ctx));
73 ctx->Extensions.ARB_ES2_compatibility = GL_TRUE;
74 ctx->Extensions.ARB_draw_buffers = GL_TRUE;
75 ctx->Extensions.ARB_draw_instanced = GL_TRUE;
76 ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
77 ctx->Extensions.EXT_texture_array = GL_TRUE;
78 ctx->Extensions.NV_texture_rectangle = GL_TRUE;
79 ctx->Extensions.EXT_texture3D = GL_TRUE;
81 /* GLSL 1.30 isn't fully supported, but we need to advertise 1.30 so that
82 * the built-in functions for 1.30 can be built.
84 ctx->Const.GLSLVersion = 130;
87 ctx->Const.MaxLights = 8;
88 ctx->Const.MaxClipPlanes = 8;
89 ctx->Const.MaxTextureUnits = 2;
91 /* More than the 1.10 minimum to appease parser tests taken from
92 * apps that (hopefully) already checked the number of coords.
94 ctx->Const.MaxTextureCoordUnits = 4;
96 ctx->Const.VertexProgram.MaxAttribs = 16;
97 ctx->Const.VertexProgram.MaxUniformComponents = 512;
98 ctx->Const.MaxVarying = 8;
99 ctx->Const.MaxVertexTextureImageUnits = 0;
100 ctx->Const.MaxCombinedTextureImageUnits = 2;
101 ctx->Const.MaxTextureImageUnits = 2;
102 ctx->Const.FragmentProgram.MaxUniformComponents = 64;
104 ctx->Const.MaxDrawBuffers = 2;
106 ctx->Driver.NewShader = _mesa_new_shader;
109 /* Returned string will have 'ctx' as its ralloc owner. */
111 load_text_file(void *ctx, const char *file_name)
115 size_t total_read = 0;
116 FILE *fp = fopen(file_name, "rb");
122 fseek(fp, 0L, SEEK_END);
124 fseek(fp, 0L, SEEK_SET);
126 text = (char *) ralloc_size(ctx, size + 1);
129 size_t bytes = fread(text + total_read,
130 1, size - total_read, fp);
131 if (bytes < size - total_read) {
142 } while (total_read < size);
144 text[total_read] = '\0';
158 const struct option compiler_opts[] = {
159 { "glsl-es", 0, &glsl_es, 1 },
160 { "dump-ast", 0, &dump_ast, 1 },
161 { "dump-hir", 0, &dump_hir, 1 },
162 { "dump-lir", 0, &dump_lir, 1 },
163 { "link", 0, &do_link, 1 },
168 * \brief Print proper usage and exit with failure.
171 usage_fail(const char *name)
175 "usage: %s [options] <file.vert | file.geom | file.frag>\n"
177 "Possible options are:\n";
178 printf(header, name, name);
179 for (const struct option *o = compiler_opts; o->name != 0; ++o) {
180 printf(" --%s\n", o->name);
187 compile_shader(struct gl_context *ctx, struct gl_shader *shader)
189 struct _mesa_glsl_parse_state *state =
190 new(shader) _mesa_glsl_parse_state(ctx, shader->Type, shader);
192 const char *source = shader->Source;
193 state->error = preprocess(state, &source, &state->info_log,
194 state->extensions, ctx->API) != 0;
197 _mesa_glsl_lexer_ctor(state, source);
198 _mesa_glsl_parse(state);
199 _mesa_glsl_lexer_dtor(state);
203 foreach_list_const(n, &state->translation_unit) {
204 ast_node *ast = exec_node_data(ast_node, n, link);
210 shader->ir = new(shader) exec_list;
211 if (!state->error && !state->translation_unit.is_empty())
212 _mesa_ast_to_hir(shader->ir, state);
214 /* Print out the unoptimized IR. */
215 if (!state->error && dump_hir) {
216 validate_ir_tree(shader->ir);
217 _mesa_print_ir(shader->ir, state);
220 /* Optimization passes */
221 if (!state->error && !shader->ir->is_empty()) {
224 progress = do_common_optimization(shader->ir, false, 32);
227 validate_ir_tree(shader->ir);
231 /* Print out the resulting IR */
232 if (!state->error && dump_lir) {
233 _mesa_print_ir(shader->ir, state);
236 shader->symbols = state->symbols;
237 shader->CompileStatus = !state->error;
238 shader->Version = state->language_version;
239 memcpy(shader->builtins_to_link, state->builtins_to_link,
240 sizeof(shader->builtins_to_link[0]) * state->num_builtins_to_link);
241 shader->num_builtins_to_link = state->num_builtins_to_link;
244 ralloc_free(shader->InfoLog);
246 shader->InfoLog = state->info_log;
248 /* Retain any live IR, but trash the rest. */
249 reparent_ir(shader->ir, shader);
257 main(int argc, char **argv)
259 int status = EXIT_SUCCESS;
260 struct gl_context local_ctx;
261 struct gl_context *ctx = &local_ctx;
265 while ((c = getopt_long(argc, argv, "", compiler_opts, &idx)) != -1)
272 initialize_context(ctx, (glsl_es) ? API_OPENGLES2 : API_OPENGL);
274 struct gl_shader_program *whole_program;
276 whole_program = rzalloc (NULL, struct gl_shader_program);
277 assert(whole_program != NULL);
278 whole_program->InfoLog = ralloc_strdup(whole_program, "");
280 for (/* empty */; argc > optind; optind++) {
281 whole_program->Shaders =
282 reralloc(whole_program, whole_program->Shaders,
283 struct gl_shader *, whole_program->NumShaders + 1);
284 assert(whole_program->Shaders != NULL);
286 struct gl_shader *shader = rzalloc(whole_program, gl_shader);
288 whole_program->Shaders[whole_program->NumShaders] = shader;
289 whole_program->NumShaders++;
291 const unsigned len = strlen(argv[optind]);
295 const char *const ext = & argv[optind][len - 5];
296 if (strncmp(".vert", ext, 5) == 0)
297 shader->Type = GL_VERTEX_SHADER;
298 else if (strncmp(".geom", ext, 5) == 0)
299 shader->Type = GL_GEOMETRY_SHADER;
300 else if (strncmp(".frag", ext, 5) == 0)
301 shader->Type = GL_FRAGMENT_SHADER;
305 shader->Source = load_text_file(whole_program, argv[optind]);
306 if (shader->Source == NULL) {
307 printf("File \"%s\" does not exist.\n", argv[optind]);
311 compile_shader(ctx, shader);
313 if (!shader->CompileStatus) {
314 printf("Info log for %s:\n%s\n", argv[optind], shader->InfoLog);
315 status = EXIT_FAILURE;
320 if ((status == EXIT_SUCCESS) && do_link) {
321 link_shaders(ctx, whole_program);
322 status = (whole_program->LinkStatus) ? EXIT_SUCCESS : EXIT_FAILURE;
324 if (strlen(whole_program->InfoLog) > 0)
325 printf("Info log for linking:\n%s\n", whole_program->InfoLog);
328 for (unsigned i = 0; i < MESA_SHADER_TYPES; i++)
329 ralloc_free(whole_program->_LinkedShaders[i]);
331 ralloc_free(whole_program);
332 _mesa_glsl_release_types();
333 _mesa_glsl_release_functions();