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-rw-r--r--src/mesa/shader/prog_uniform.c157
-rw-r--r--src/mesa/shader/prog_uniform.h91
2 files changed, 248 insertions, 0 deletions
diff --git a/src/mesa/shader/prog_uniform.c b/src/mesa/shader/prog_uniform.c
new file mode 100644
index 00000000000..20e004b350c
--- /dev/null
+++ b/src/mesa/shader/prog_uniform.c
@@ -0,0 +1,157 @@
+/*
+ * 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++) {
+ _mesa_free((void *) list->Uniforms[i].Name);
+ }
+ _mesa_free(list->Uniforms);
+ _mesa_free(list);
+}
+
+
+GLboolean
+_mesa_append_uniform(struct gl_uniform_list *list,
+ const char *name, GLenum target, GLuint progPos)
+{
+ const GLuint oldNum = list->NumUniforms;
+ 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;
+ }
+
+ list->Uniforms[oldNum].Name = _mesa_strdup(name);
+ list->Uniforms[oldNum].VertPos = -1;
+ list->Uniforms[oldNum].FragPos = -1;
+ index = oldNum;
+ list->NumUniforms++;
+ }
+
+ /* update position for the vertex or fragment program */
+ if (target == GL_VERTEX_PROGRAM_ARB) {
+ if (list->Uniforms[index].VertPos != -1) {
+ /* this uniform is already in the list - that shouldn't happen */
+ return GL_FALSE;
+ }
+ list->Uniforms[index].VertPos = progPos;
+ }
+ else {
+ if (list->Uniforms[index].FragPos != -1) {
+ /* this uniform is already in the list - that shouldn't happen */
+ return GL_FALSE;
+ }
+ list->Uniforms[index].FragPos = progPos;
+ }
+
+ return GL_TRUE;
+}
+
+
+/**
+ * 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; i < list->NumUniforms; i++) {
+ if (!_mesa_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; i < list->NumUniforms; i++) {
+ GLuint len = _mesa_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);
+ }
+}
diff --git a/src/mesa/shader/prog_uniform.h b/src/mesa/shader/prog_uniform.h
new file mode 100644
index 00000000000..735de28705a
--- /dev/null
+++ b/src/mesa/shader/prog_uniform.h
@@ -0,0 +1,91 @@
+/*
+ * 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
+ */
+
+#ifndef PROG_UNIFORM_H
+#define PROG_UNIFORM_H
+
+#include "main/mtypes.h"
+#include "prog_statevars.h"
+
+
+/**
+ * Shader program uniform variable.
+ * The glGetUniformLocation() and glUniform() commands will use this
+ * information.
+ * Note that a uniform such as "binormal" might be used in both the
+ * vertex shader and the fragment shader. When glUniform() is called to
+ * set the uniform's value, it must be updated in both the vertex and
+ * fragment shaders. The uniform may be in different locations in the
+ * two shaders so we keep track of that here.
+ */
+struct gl_uniform
+{
+ const char *Name; /**< Null-terminated string */
+ GLint VertPos;
+ GLint FragPos;
+#if 0
+ GLenum DataType; /**< GL_FLOAT, GL_FLOAT_VEC2, etc */
+ GLuint Size; /**< Number of components (1..4) */
+#endif
+};
+
+
+/**
+ * List of gl_uniforms
+ */
+struct gl_uniform_list
+{
+ GLuint Size; /**< allocated size of Uniforms array */
+ GLuint NumUniforms; /**< number of uniforms in the array */
+ struct gl_uniform *Uniforms; /**< Array [Size] */
+};
+
+
+extern struct gl_uniform_list *
+_mesa_new_uniform_list(void);
+
+extern void
+_mesa_free_uniform_list(struct gl_uniform_list *list);
+
+extern GLboolean
+_mesa_append_uniform(struct gl_uniform_list *list,
+ const char *name, GLenum target, GLuint progPos);
+
+extern GLint
+_mesa_lookup_uniform(const struct gl_uniform_list *list, const char *name);
+
+extern GLint
+_mesa_longest_uniform_name(const struct gl_uniform_list *list);
+
+extern void
+_mesa_print_uniforms(const struct gl_uniform_list *list);
+
+
+#endif /* PROG_UNIFORM_H */
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