diff options
Diffstat (limited to 'progs/demos/winpos.c')
-rw-r--r-- | progs/demos/winpos.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/progs/demos/winpos.c b/progs/demos/winpos.c deleted file mode 100644 index f935f9bee0f..00000000000 --- a/progs/demos/winpos.c +++ /dev/null @@ -1,116 +0,0 @@ - -/* - * Example of how to use the GL_MESA_window_pos extension. - * Brian Paul This file is in the public domain. - */ - -#include <math.h> -#include <string.h> -#include <stdlib.h> -#include <stdio.h> -#ifdef _WIN32 -#include <windows.h> -#endif -#include "GL/glew.h" -#include "GL/glut.h" - -#include "readtex.h" - -#define IMAGE_FILE "../images/girl.rgb" - - -#ifndef M_PI -# define M_PI 3.14159265 -#endif - - - -static GLubyte *Image; -static int ImgWidth, ImgHeight; -static GLenum ImgFormat; - -static PFNGLWINDOWPOS2FPROC WindowPosFunc; - -static void draw( void ) -{ - GLfloat angle; - - glClear( GL_COLOR_BUFFER_BIT ); - - for (angle = -45.0; angle <= 135.0; angle += 10.0) { - GLfloat x = 50.0 + 200.0 * cos( angle * M_PI / 180.0 ); - GLfloat y = 50.0 + 200.0 * sin( angle * M_PI / 180.0 ); - - /* Don't need to worry about the modelview or projection matrices!!! */ - (*WindowPosFunc)( x, y ); - - glDrawPixels( ImgWidth, ImgHeight, ImgFormat, GL_UNSIGNED_BYTE, Image ); - } - glFinish(); -} - - -static void key( unsigned char key, int x, int y ) -{ - (void) x; - (void) y; - switch (key) { - case 27: - exit(0); - } -} - - -/* new window size or exposure */ -static void reshape( int width, int height ) -{ - glViewport(0, 0, (GLint)width, (GLint)height); -} - - -static void init( void ) -{ - if (GLEW_ARB_window_pos) { - printf("Using GL_ARB_window_pos\n"); - WindowPosFunc = glWindowPos2fARB; - } - else - if (GLEW_MESA_window_pos) { - printf("Using GL_MESA_window_pos\n"); - WindowPosFunc = glWindowPos2fMESA; - } - else - { - printf("Sorry, GL_ARB/MESA_window_pos extension not available.\n"); - exit(1); - } - - Image = LoadRGBImage( IMAGE_FILE, &ImgWidth, &ImgHeight, &ImgFormat ); - if (!Image) { - printf("Couldn't read %s\n", IMAGE_FILE); - exit(0); - } - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); -} - - -int main( int argc, char *argv[] ) -{ - glutInitWindowSize(500, 500); - glutInit(&argc, argv); - glutInitDisplayMode( GLUT_RGB ); - - if (glutCreateWindow("winpos") <= 0) { - exit(0); - } - - glewInit(); - - init(); - - glutReshapeFunc( reshape ); - glutKeyboardFunc( key ); - glutDisplayFunc( draw ); - glutMainLoop(); - return 0; -} |