diff options
Diffstat (limited to 'src/mesa/program/prog_uniform.c')
-rw-r--r-- | src/mesa/program/prog_uniform.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/mesa/program/prog_uniform.c b/src/mesa/program/prog_uniform.c new file mode 100644 index 0000000000..c408a8492c --- /dev/null +++ b/src/mesa/program/prog_uniform.c @@ -0,0 +1,165 @@ +/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * + * 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 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 + * BRIAN PAUL 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. + */ + +/** + * \file prog_uniform.c + * Shader uniform functions. + * \author Brian Paul + */ + +#include "main/imports.h" +#include "main/mtypes.h" +#include "prog_uniform.h" + + +struct gl_uniform_list * +_mesa_new_uniform_list(void) +{ + return CALLOC_STRUCT(gl_uniform_list); +} + + +void +_mesa_free_uniform_list(struct gl_uniform_list *list) +{ + GLuint i; + for (i = 0; i < list->NumUniforms; i++) { + free((void *) list->Uniforms[i].Name); + } + free(list->Uniforms); + free(list); +} + + +struct gl_uniform * +_mesa_append_uniform(struct gl_uniform_list *list, + const char *name, GLenum target, GLuint progPos) +{ + const GLuint oldNum = list->NumUniforms; + struct gl_uniform *uniform; + GLint index; + + assert(target == GL_VERTEX_PROGRAM_ARB || + target == GL_FRAGMENT_PROGRAM_ARB); + + index = _mesa_lookup_uniform(list, name); + if (index < 0) { + /* not found - append to list */ + + if (oldNum + 1 > list->Size) { + /* Need to grow the list array (alloc some extra) */ + list->Size += 4; + + /* realloc arrays */ + list->Uniforms = (struct gl_uniform *) + _mesa_realloc(list->Uniforms, + oldNum * sizeof(struct gl_uniform), + list->Size * sizeof(struct gl_uniform)); + } + + if (!list->Uniforms) { + /* out of memory */ + list->NumUniforms = 0; + list->Size = 0; + return GL_FALSE; + } + + uniform = list->Uniforms + oldNum; + + uniform->Name = _mesa_strdup(name); + uniform->VertPos = -1; + uniform->FragPos = -1; + uniform->Initialized = GL_FALSE; + + list->NumUniforms++; + } + else { + /* found */ + uniform = list->Uniforms + index; + } + + /* update position for the vertex or fragment program */ + if (target == GL_VERTEX_PROGRAM_ARB) { + if (uniform->VertPos != -1) { + /* this uniform is already in the list - that shouldn't happen */ + return GL_FALSE; + } + uniform->VertPos = progPos; + } + else { + if (uniform->FragPos != -1) { + /* this uniform is already in the list - that shouldn't happen */ + return GL_FALSE; + } + uniform->FragPos = progPos; + } + + return uniform; +} + + +/** + * Return the location/index of the named uniform in the uniform list, + * or -1 if not found. + */ +GLint +_mesa_lookup_uniform(const struct gl_uniform_list *list, const char *name) +{ + GLuint i; + for (i = 0; list && i < list->NumUniforms; i++) { + if (!strcmp(list->Uniforms[i].Name, name)) { + return i; + } + } + return -1; +} + + +GLint +_mesa_longest_uniform_name(const struct gl_uniform_list *list) +{ + GLint max = 0; + GLuint i; + for (i = 0; list && i < list->NumUniforms; i++) { + GLint len = (GLint) strlen(list->Uniforms[i].Name); + if (len > max) + max = len; + } + return max; +} + + +void +_mesa_print_uniforms(const struct gl_uniform_list *list) +{ + GLuint i; + printf("Uniform list %p:\n", (void *) list); + for (i = 0; i < list->NumUniforms; i++) { + printf("%d: %s %d %d\n", + i, + list->Uniforms[i].Name, + list->Uniforms[i].VertPos, + list->Uniforms[i].FragPos); + } +} |