| /* |
| * (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; |
| } |