/* * (C) Copyright IBM Corporation 2006 * 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 * on the rights to use, copy, modify, merge, publish, distribute, sub * license, 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 (including the next * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL * IBM AND/OR THEIR SUPPLIERS 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. */ #include <assert.h> #include <stdio.h> #include <stdlib.h> #include <math.h> #ifdef __darwin__ #include <GLUT/glut.h> typedef void (* PFNGLBINDVERTEXARRAYAPPLEPROC) (GLuint array); typedef void (* PFNGLDELETEVERTEXARRAYSAPPLEPROC) (GLsizei n, const GLuint *arrays); typedef void (* PFNGLGENVERTEXARRAYSAPPLEPROC) (GLsizei n, const GLuint *arrays); typedef GLboolean (* PFNGLISVERTEXARRAYAPPLEPROC) (GLuint array); #else #include <GL/glut.h> #endif static PFNGLBINDVERTEXARRAYAPPLEPROC bind_vertex_array = NULL; static PFNGLGENVERTEXARRAYSAPPLEPROC gen_vertex_arrays = NULL; static PFNGLDELETEVERTEXARRAYSAPPLEPROC delete_vertex_arrays = NULL; static PFNGLISVERTEXARRAYAPPLEPROC is_vertex_array = NULL; static int Width = 400; static int Height = 200; static int Win = 0; static const GLfloat Near = 5.0, Far = 25.0; static GLfloat angle = 0.0; static GLuint cube_array_obj = 0; static GLuint oct_array_obj = 0; static const GLfloat cube_vert[] = { -0.5, -0.5, -0.5, 1.0, 0.5, -0.5, -0.5, 1.0, 0.5, 0.5, -0.5, 1.0, -0.5, 0.5, -0.5, 1.0, -0.5, -0.5, 0.5, 1.0, 0.5, -0.5, 0.5, 1.0, 0.5, 0.5, 0.5, 1.0, -0.5, 0.5, 0.5, 1.0, -0.5, 0.5, -0.5, 1.0, 0.5, 0.5, -0.5, 1.0, 0.5, 0.5, 0.5, 1.0, -0.5, 0.5, 0.5, 1.0, -0.5, -0.5, -0.5, 1.0, 0.5, -0.5, -0.5, 1.0, 0.5, -0.5, 0.5, 1.0, -0.5, -0.5, 0.5, 1.0, 0.5, -0.5, -0.5, 1.0, 0.5, -0.5, 0.5, 1.0, 0.5, 0.5, 0.5, 1.0, 0.5, 0.5, -0.5, 1.0, -0.5, -0.5, -0.5, 1.0, -0.5, -0.5, 0.5, 1.0, -0.5, 0.5, 0.5, 1.0, -0.5, 0.5, -0.5, 1.0, }; static const GLfloat cube_color[] = { 1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0, 1.0, 0.0, 1.0, 1.0, 1.0, 0.0, 1.0, 1.0, 1.0, 0.0, 1.0, 1.0, 1.0, 0.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.5, 0.5, 0.5, 1.0, 0.5, 0.5, 0.5, 1.0, 0.5, 0.5, 0.5, 1.0, 0.5, 0.5, 0.5, 1.0, }; static const GLfloat oct_vert[] = { 0.0, 0.0, 0.7071, 1.0, 0.5, 0.5, 0.0, 1.0, -0.5, 0.5, 0.0, 1.0, 0.0, 0.0, 0.7071, 1.0, 0.5, -0.5, 0.0, 1.0, -0.5, -0.5, 0.0, 1.0, 0.0, 0.0, 0.7071, 1.0, -0.5, -0.5, 0.0, 1.0, -0.5, 0.5, 0.0, 1.0, 0.0, 0.0, 0.7071, 1.0, 0.5, 0.5, 0.0, 1.0, 0.5, -0.5, 0.0, 1.0, 0.0, 0.0, -0.7071, 1.0, 0.5, 0.5, 0.0, 1.0, -0.5, 0.5, 0.0, 1.0, 0.0, 0.0, -0.7071, 1.0, 0.5, -0.5, 0.0, 1.0, -0.5, -0.5, 0.0, 1.0, 0.0, 0.0, -0.7071, 1.0, -0.5, -0.5, 0.0, 1.0, -0.5, 0.5, 0.0, 1.0, 0.0, 0.0, -0.7071, 1.0, 0.5, 0.5, 0.0, 1.0, 0.5, -0.5, 0.0, 1.0, }; static const GLfloat oct_color[] = { 1.0, 0.64, 0.0, 1.0, 1.0, 0.64, 0.0, 1.0, 1.0, 0.64, 0.0, 1.0, 0.8, 0.51, 0.0, 1.0, 0.8, 0.51, 0.0, 1.0, 0.8, 0.51, 0.0, 1.0, 0.5, 0.32, 0.0, 1.0, 0.5, 0.32, 0.0, 1.0, 0.5, 0.32, 0.0, 1.0, 0.2, 0.13, 0.0, 1.0, 0.2, 0.13, 0.0, 1.0, 0.2, 0.13, 0.0, 1.0, 0.2, 0.13, 0.0, 1.0, 0.2, 0.13, 0.0, 1.0, 0.2, 0.13, 0.0, 1.0, 0.5, 0.32, 0.0, 1.0, 0.5, 0.32, 0.0, 1.0, 0.5, 0.32, 0.0, 1.0, 0.8, 0.51, 0.0, 1.0, 0.8, 0.51, 0.0, 1.0, 0.8, 0.51, 0.0, 1.0, 1.0, 0.64, 0.0, 1.0, 1.0, 0.64, 0.0, 1.0, 1.0, 0.64, 0.0, 1.0, }; static void Display( void ) { glClearColor(0.1, 0.1, 0.4, 0); glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); glMatrixMode( GL_MODELVIEW ); glLoadIdentity(); glTranslatef( 0.0, 0.0, -15.0 ); glRotatef( angle, 0.0 * angle , 0.0 * angle, 1.0 ); (*bind_vertex_array)( cube_array_obj ); glPushMatrix(); glTranslatef(-1.5, 0, 0); glRotatef( angle, 0.3 * angle , 0.8 * angle, 1.0 ); glDrawArrays( GL_QUADS, 0, 4 * 6 ); glPopMatrix(); (*bind_vertex_array)( oct_array_obj ); glPushMatrix(); glTranslatef(1.5, 0, 0); glRotatef( angle, 0.3 * angle , 0.8 * angle, 1.0 ); glDrawArrays( GL_TRIANGLES, 0, 3 * 8 ); glPopMatrix(); glutSwapBuffers(); } static void Idle( void ) { static double t0 = -1.; double dt, t = glutGet(GLUT_ELAPSED_TIME) / 1000.0; if (t0 < 0.0) t0 = t; dt = t - t0; t0 = t; angle += 70.0 * dt; /* 70 degrees per second */ angle = fmod(angle, 360.0); /* prevents eventual overflow */ glutPostRedisplay(); } static void Visible( int vis ) { if ( vis == GLUT_VISIBLE ) { glutIdleFunc( Idle ); } else { glutIdleFunc( NULL ); } } static void Reshape( int width, int height ) { GLfloat ar = (float) width / (float) height; Width = width; Height = height; glViewport( 0, 0, width, height ); glMatrixMode( GL_PROJECTION ); glLoadIdentity(); glFrustum( -ar, ar, -1.0, 1.0, Near, Far ); } static void Key( unsigned char key, int x, int y ) { (void) x; (void) y; switch (key) { case 27: (*delete_vertex_arrays)( 1, & cube_array_obj ); (*delete_vertex_arrays)( 1, & oct_array_obj ); glutDestroyWindow(Win); exit(0); break; } glutPostRedisplay(); } static void Init( void ) { const char * const ver_string = (const char * const) glGetString( GL_VERSION ); printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); printf("GL_VERSION = %s\n", ver_string); if ( !glutExtensionSupported("GL_APPLE_vertex_array_object") ) { printf("Sorry, this program requires GL_APPLE_vertex_array_object\n"); exit(1); } bind_vertex_array = (PFNGLBINDVERTEXARRAYAPPLEPROC) glutGetProcAddress( "glBindVertexArrayAPPLE" ); gen_vertex_arrays = (PFNGLGENVERTEXARRAYSAPPLEPROC) glutGetProcAddress( "glGenVertexArraysAPPLE" ); delete_vertex_arrays = (PFNGLDELETEVERTEXARRAYSAPPLEPROC) glutGetProcAddress( "glDeleteVertexArraysAPPLE" ); is_vertex_array = (PFNGLISVERTEXARRAYAPPLEPROC) glutGetProcAddress( "glIsVertexArrayAPPLE" ); assert(bind_vertex_array); assert(gen_vertex_arrays); assert(delete_vertex_arrays); assert(is_vertex_array); glEnable( GL_DEPTH_TEST ); (*gen_vertex_arrays)( 1, & cube_array_obj ); (*bind_vertex_array)( cube_array_obj ); glVertexPointer( 4, GL_FLOAT, sizeof(GLfloat) * 4, cube_vert); glColorPointer( 4, GL_FLOAT, sizeof(GLfloat) * 4, cube_color); glEnableClientState( GL_VERTEX_ARRAY ); glEnableClientState( GL_COLOR_ARRAY ); (*gen_vertex_arrays)( 1, & oct_array_obj ); (*bind_vertex_array)( oct_array_obj ); glVertexPointer( 4, GL_FLOAT, sizeof(GLfloat) * 4, oct_vert); glColorPointer( 4, GL_FLOAT, sizeof(GLfloat) * 4, oct_color); glEnableClientState( GL_VERTEX_ARRAY ); glEnableClientState( GL_COLOR_ARRAY ); (*bind_vertex_array)( 0 ); glVertexPointer( 4, GL_FLOAT, sizeof(GLfloat) * 4, (void *) 0xDEADBEEF ); glColorPointer( 4, GL_FLOAT, sizeof(GLfloat) * 4, (void *) 0xBADDC0DE ); } int main( int argc, char *argv[] ) { glutInitWindowSize( Width, Height ); glutInit( &argc, argv ); glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH ); Win = glutCreateWindow( "GL_APPLE_vertex_array_object demo" ); glutReshapeFunc( Reshape ); glutKeyboardFunc( Key ); glutDisplayFunc( Display ); glutVisibilityFunc( Visible ); Init(); glutMainLoop(); return 0; }