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-rw-r--r--progs/util/shaderutil.c323
1 files changed, 0 insertions, 323 deletions
diff --git a/progs/util/shaderutil.c b/progs/util/shaderutil.c
deleted file mode 100644
index 2f44c388d8a..00000000000
--- a/progs/util/shaderutil.c
+++ /dev/null
@@ -1,323 +0,0 @@
-/**
- * Utilities for OpenGL shading language
- *
- * Brian Paul
- * 9 April 2008
- */
-
-
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <GL/glew.h>
-#include <GL/glut.h>
-#include "shaderutil.h"
-
-/** time to compile previous shader */
-static GLdouble CompileTime = 0.0;
-
-/** time to linke previous program */
-static GLdouble LinkTime = 0.0;
-
-
-GLboolean
-ShadersSupported(void)
-{
- const char *version = (const char *) glGetString(GL_VERSION);
-
- /* NVIDIA binary drivers will return "3.0.0", and they clearly support
- * shaders.
- */
- if (version[0] >= '2' && version[1] == '.') {
- return GL_TRUE;
- }
- else if (glutExtensionSupported("GL_ARB_vertex_shader")
- && glutExtensionSupported("GL_ARB_fragment_shader")
- && glutExtensionSupported("GL_ARB_shader_objects")) {
- fprintf(stderr, "Warning: Trying ARB GLSL instead of OpenGL 2.x. This may not work.\n");
- return GL_TRUE;
- }
- fprintf(stderr, "Sorry, GLSL not supported with this OpenGL.\n");
- return GL_FALSE;
-}
-
-
-GLuint
-CompileShaderText(GLenum shaderType, const char *text)
-{
- GLuint shader;
- GLint stat;
- GLdouble t0, t1;
-
- shader = glCreateShader(shaderType);
- glShaderSource(shader, 1, (const GLchar **) &text, NULL);
-
- t0 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
- glCompileShader(shader);
- t1 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
-
- CompileTime = t1 - t0;
-
- glGetShaderiv(shader, GL_COMPILE_STATUS, &stat);
- if (!stat) {
- GLchar log[1000];
- GLsizei len;
- glGetShaderInfoLog(shader, 1000, &len, log);
- fprintf(stderr, "Error: problem compiling shader: %s\n", log);
- exit(1);
- }
- else {
- /*printf("Shader compiled OK\n");*/
- }
- return shader;
-}
-
-
-/**
- * Read a shader from a file.
- */
-GLuint
-CompileShaderFile(GLenum shaderType, const char *filename)
-{
- const int max = 100*1000;
- int n;
- char *buffer = (char*) malloc(max);
- GLuint shader;
- FILE *f;
-
- f = fopen(filename, "r");
- if (!f) {
- fprintf(stderr, "Unable to open shader file %s\n", filename);
- free(buffer);
- return 0;
- }
-
- n = fread(buffer, 1, max, f);
- /*printf("read %d bytes from shader file %s\n", n, filename);*/
- if (n > 0) {
- buffer[n] = 0;
- shader = CompileShaderText(shaderType, buffer);
- }
- else {
- fclose(f);
- free(buffer);
- return 0;
- }
-
- fclose(f);
- free(buffer);
-
- return shader;
-}
-
-
-GLuint
-LinkShaders(GLuint vertShader, GLuint fragShader)
-{
- GLuint program = glCreateProgram();
- GLdouble t0, t1;
-
- assert(vertShader || fragShader);
-
- if (fragShader)
- glAttachShader(program, fragShader);
- if (vertShader)
- glAttachShader(program, vertShader);
-
- t0 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
- glLinkProgram(program);
- t1 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
-
- LinkTime = t1 - t0;
-
- /* check link */
- {
- GLint stat;
- glGetProgramiv(program, GL_LINK_STATUS, &stat);
- if (!stat) {
- GLchar log[1000];
- GLsizei len;
- glGetProgramInfoLog(program, 1000, &len, log);
- fprintf(stderr, "Shader link error:\n%s\n", log);
- return 0;
- }
- }
-
- return program;
-}
-
-
-GLboolean
-ValidateShaderProgram(GLuint program)
-{
- GLint stat;
- glValidateProgramARB(program);
- glGetProgramiv(program, GL_VALIDATE_STATUS, &stat);
-
- if (!stat) {
- GLchar log[1000];
- GLsizei len;
- glGetProgramInfoLog(program, 1000, &len, log);
- fprintf(stderr, "Program validation error:\n%s\n", log);
- return 0;
- }
-
- return (GLboolean) stat;
-}
-
-
-GLdouble
-GetShaderCompileTime(void)
-{
- return CompileTime;
-}
-
-
-GLdouble
-GetShaderLinkTime(void)
-{
- return LinkTime;
-}
-
-
-void
-SetUniformValues(GLuint program, struct uniform_info uniforms[])
-{
- GLuint i;
-
- for (i = 0; uniforms[i].name; i++) {
- uniforms[i].location
- = glGetUniformLocation(program, uniforms[i].name);
-
- switch (uniforms[i].type) {
- case GL_INT:
- case GL_SAMPLER_1D:
- case GL_SAMPLER_2D:
- case GL_SAMPLER_3D:
- case GL_SAMPLER_CUBE:
- case GL_SAMPLER_2D_RECT_ARB:
- assert(uniforms[i].value[0] >= 0.0F);
- glUniform1i(uniforms[i].location,
- (GLint) uniforms[i].value[0]);
- break;
- case GL_FLOAT:
- glUniform1fv(uniforms[i].location, 1, uniforms[i].value);
- break;
- case GL_FLOAT_VEC2:
- glUniform2fv(uniforms[i].location, 1, uniforms[i].value);
- break;
- case GL_FLOAT_VEC3:
- glUniform3fv(uniforms[i].location, 1, uniforms[i].value);
- break;
- case GL_FLOAT_VEC4:
- glUniform4fv(uniforms[i].location, 1, uniforms[i].value);
- break;
- default:
- if (strncmp(uniforms[i].name, "gl_", 3) == 0) {
- /* built-in uniform: ignore */
- }
- else {
- fprintf(stderr,
- "Unexpected uniform data type in SetUniformValues\n");
- abort();
- }
- }
- }
-}
-
-
-/** Get list of uniforms used in the program */
-GLuint
-GetUniforms(GLuint program, struct uniform_info uniforms[])
-{
- GLint n, max, i;
-
- glGetProgramiv(program, GL_ACTIVE_UNIFORMS, &n);
- glGetProgramiv(program, GL_ACTIVE_UNIFORM_MAX_LENGTH, &max);
-
- for (i = 0; i < n; i++) {
- GLint size, len;
- GLenum type;
- char name[100];
-
- glGetActiveUniform(program, i, 100, &len, &size, &type, name);
-
- uniforms[i].name = strdup(name);
- uniforms[i].size = size;
- uniforms[i].type = type;
- uniforms[i].location = glGetUniformLocation(program, name);
- }
-
- uniforms[i].name = NULL; /* end of list */
-
- return n;
-}
-
-
-void
-PrintUniforms(const struct uniform_info uniforms[])
-{
- GLint i;
-
- printf("Uniforms:\n");
-
- for (i = 0; uniforms[i].name; i++) {
- printf(" %d: %s size=%d type=0x%x loc=%d value=%g, %g, %g, %g\n",
- i,
- uniforms[i].name,
- uniforms[i].size,
- uniforms[i].type,
- uniforms[i].location,
- uniforms[i].value[0],
- uniforms[i].value[1],
- uniforms[i].value[2],
- uniforms[i].value[3]);
- }
-}
-
-
-/** Get list of attribs used in the program */
-GLuint
-GetAttribs(GLuint program, struct attrib_info attribs[])
-{
- GLint n, max, i;
-
- glGetProgramiv(program, GL_ACTIVE_ATTRIBUTES, &n);
- glGetProgramiv(program, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &max);
-
- for (i = 0; i < n; i++) {
- GLint size, len;
- GLenum type;
- char name[100];
-
- glGetActiveAttrib(program, i, 100, &len, &size, &type, name);
-
- attribs[i].name = strdup(name);
- attribs[i].size = size;
- attribs[i].type = type;
- attribs[i].location = glGetAttribLocation(program, name);
- }
-
- attribs[i].name = NULL; /* end of list */
-
- return n;
-}
-
-
-void
-PrintAttribs(const struct attrib_info attribs[])
-{
- GLint i;
-
- printf("Attribs:\n");
-
- for (i = 0; attribs[i].name; i++) {
- printf(" %d: %s size=%d type=0x%x loc=%d\n",
- i,
- attribs[i].name,
- attribs[i].size,
- attribs[i].type,
- attribs[i].location);
- }
-}
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