Attachment 13251 Details for Bug 13751 – Demo; requires GLEW and GLUT

Demo; requires GLEW and GLUT

glsl-size.c (text/x-csrc), 2.00 KB, created by Bruce Merry on 2007-12-20 03:33:17 UTC

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Filename:

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Creator: Bruce Merry

Created: 2007-12-20 03:33:17 UTC

Size: 2.00 KB

patch

obsolete

>#include <stdio.h>
>#include <stdlib.h>
>#include <string.h>
>#include <GL/glew.h>
>#include <GL/glut.h>
>
>static const GLchar vs_source[] =
>    "uniform mat4 m;\n"
>    "void main()\n"
>    "{\n"
>    "    gl_Position = m * gl_Vertex;\n"
>    "}\n";
>
>static const GLchar fs_source[] =
>    "void main()\n"
>    "{\n"
>    "    gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);\n"
>    "}\n";
>
>static void check_status(GLuint id, GLenum pname)
>{
>    GLint status;
>
>    glGetObjectParameterivARB(id, pname, &status);
>    if (!status)
>    {
>        char info[1024];
>
>        fprintf(stderr, "Compilation failure:\n");
>        glGetInfoLogARB(id, sizeof(info), NULL, info);
>        fprintf(stderr, "%s\n", info);
>        exit(1);
>    }
>}
>
>static GLuint make_shader(GLenum type, const char *source)
>{
>    GLuint id;
>
>    id = glCreateShaderObjectARB(type);
>    glShaderSourceARB(id, 1, &source, NULL);
>    glCompileShaderARB(id);
>    check_status(id, GL_OBJECT_COMPILE_STATUS_ARB);
>    return id;
>}
>
>int main(int argc, char **argv)
>{
>    GLuint program, vs, fs;
>    GLint location;
>    GLint length = 0, size = 0;
>    GLenum type = 0;
>    char name[64];
>
>    glutInit(&argc, argv);
>    glutCreateWindow("Mesa bug demo");
>    glewInit();
>    if (!glewIsExtensionSupported("GL_ARB_vertex_shader")
>        || !glewIsExtensionSupported("GL_ARB_fragment_shader")
>        || !glewIsExtensionSupported("GL_ARB_shader_objects"))
>    {
>        fprintf(stderr, "Missing extensions for the test\n");
>        return 0;
>    }
>
>    vs = make_shader(GL_VERTEX_SHADER_ARB, vs_source);
>    fs = make_shader(GL_FRAGMENT_SHADER_ARB, fs_source);
>
>    program = glCreateProgramObjectARB();
>    glAttachObjectARB(program, vs);
>    glAttachObjectARB(program, fs);
>    glLinkProgramARB(program);
>    check_status(program, GL_OBJECT_LINK_STATUS_ARB);
>
>    location = glGetUniformLocationARB(program, "m");
>    glGetActiveUniformARB(program, location, sizeof(name), &length, &size, &type, name);
>    printf("size = %d: this is %s\n",
>           size, size == 1 ? "CORRECT" : "INCORRECT");
>    return 0;
>}

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