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annotate test/testdyngl.c @ 3502:98a819296cdc

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Whenever a window becomes fullscreen, shown, unminimized, and has input focus it will change the display to the corresponding fullscreen video mode. If it loses any of those properties the desktop mode will be restored.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 01 Dec 2009 08:56:12 +0000
parents 8d0889509afb
children
rev   line source
839
7b255f0290da Added a test program for dynamically loading OpenGL
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1 /*
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2 * Small SDL example to demonstrate dynamically loading
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3 * OpenGL lib and functions
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4 *
7b255f0290da Added a test program for dynamically loading OpenGL
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5 * (FYI it was supposed to look like snow in the wind or something...)
7b255f0290da Added a test program for dynamically loading OpenGL
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6 *
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7 * Compile with :
847
0afe0e38e02c *** empty log message ***
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8 * gcc testdyngl.c `sdl-config --libs --cflags` -o testdyngl -DHAVE_OPENGL
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9 *
7b255f0290da Added a test program for dynamically loading OpenGL
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10 * You can specify a different OpenGL lib on the command line, i.e. :
7b255f0290da Added a test program for dynamically loading OpenGL
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11 * ./testdyngl /usr/X11R6/lib/libGL.so.1.2
7b255f0290da Added a test program for dynamically loading OpenGL
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12 * or
7b255f0290da Added a test program for dynamically loading OpenGL
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13 * ./testdyngl /usr/lib/libGL.so.1.0.4496
7b255f0290da Added a test program for dynamically loading OpenGL
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14 *
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15 */
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16
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17 #include <stdio.h>
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18 #include <stdlib.h>
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19
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20 #include "SDL.h"
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21
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22 #ifdef __MACOS__
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23 #define HAVE_OPENGL
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24 #endif
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25
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26 #ifdef HAVE_OPENGL
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27
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28 #include "SDL_opengl.h"
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29
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Ryan C. Gordon <icculus@icculus.org>
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30 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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31 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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32 quit(int rc)
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33 {
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34 SDL_Quit();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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35 exit(rc);
1151
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parents: 990
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36 }
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37
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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38 void *
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39 get_funcaddr(const char *p)
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40 {
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41 void *f = SDL_GL_GetProcAddress(p);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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42 if (f) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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43 return f;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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44 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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45 printf("Unable to get function pointer for %s\n", p);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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46 quit(1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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47 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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48 return NULL;
839
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49 }
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50
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51 typedef struct
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52 {
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53 void (APIENTRY * glBegin) (GLenum);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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54 void (APIENTRY * glEnd) ();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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55 void (APIENTRY * glVertex3f) (GLfloat, GLfloat, GLfloat);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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56 void (APIENTRY * glClearColor) (GLfloat, GLfloat, GLfloat, GLfloat);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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57 void (APIENTRY * glClear) (GLbitfield);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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58 void (APIENTRY * glDisable) (GLenum);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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59 void (APIENTRY * glEnable) (GLenum);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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60 void (APIENTRY * glColor4ub) (GLubyte, GLubyte, GLubyte, GLubyte);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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61 void (APIENTRY * glPointSize) (GLfloat);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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62 void (APIENTRY * glHint) (GLenum, GLenum);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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63 void (APIENTRY * glBlendFunc) (GLenum, GLenum);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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64 void (APIENTRY * glMatrixMode) (GLenum);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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65 void (APIENTRY * glLoadIdentity) ();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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66 void (APIENTRY * glOrtho) (GLdouble, GLdouble, GLdouble, GLdouble,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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67 GLdouble, GLdouble);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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68 void (APIENTRY * glRotatef) (GLfloat, GLfloat, GLfloat, GLfloat);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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69 void (APIENTRY * glViewport) (GLint, GLint, GLsizei, GLsizei);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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70 void (APIENTRY * glFogf) (GLenum, GLfloat);
3323
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71 const GLubyte* (APIENTRY * glGetString) (GLenum);
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72 }
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73 glfuncs;
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74
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75 void
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76 init_glfuncs(glfuncs * f)
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77 {
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78 f->glBegin = get_funcaddr("glBegin");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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79 f->glEnd = get_funcaddr("glEnd");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1815
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80 f->glVertex3f = get_funcaddr("glVertex3f");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1815
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81 f->glClearColor = get_funcaddr("glClearColor");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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82 f->glClear = get_funcaddr("glClear");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1815
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83 f->glDisable = get_funcaddr("glDisable");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1815
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84 f->glEnable = get_funcaddr("glEnable");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1815
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85 f->glColor4ub = get_funcaddr("glColor4ub");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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86 f->glPointSize = get_funcaddr("glPointSize");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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87 f->glHint = get_funcaddr("glHint");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1815
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88 f->glBlendFunc = get_funcaddr("glBlendFunc");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1815
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89 f->glMatrixMode = get_funcaddr("glMatrixMode");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1815
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90 f->glLoadIdentity = get_funcaddr("glLoadIdentity");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1815
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91 f->glOrtho = get_funcaddr("glOrtho");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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92 f->glRotatef = get_funcaddr("glRotatef");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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93 f->glViewport = get_funcaddr("glViewport");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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94 f->glFogf = get_funcaddr("glFogf");
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95 f->glGetString = get_funcaddr("glGetString");
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96
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97 printf("Vendor : %s\n", f->glGetString(GL_VENDOR));
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98 printf("Renderer : %s\n", f->glGetString(GL_RENDERER));
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99 printf("Version : %s\n", f->glGetString(GL_VERSION));
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100 printf("Extensions : %s\n", f->glGetString(GL_EXTENSIONS));
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101 }
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102
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103 #define NB_PIXELS 1000
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104
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105 int
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106 main(int argc, char *argv[])
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107 {
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108 glfuncs f;
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109 int i;
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110 SDL_Event event;
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111 int done = 0;
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112 GLfloat pixels[NB_PIXELS * 3];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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113 const char *gl_library = NULL; /* Use the default GL library */
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114
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115 if (argv[1]) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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116 gl_library = argv[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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117 }
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118
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119 if (SDL_Init(SDL_INIT_VIDEO) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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120 printf("Unable to init SDL : %s\n", SDL_GetError());
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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121 return (1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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122 }
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123
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124 if (SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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125 printf("Unable to set GL attribute : %s\n", SDL_GetError());
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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126 quit(1);
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127 }
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128
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129 if (SDL_GL_LoadLibrary(gl_library) < 0) {
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130 printf("Unable to dynamically open GL lib : %s\n", SDL_GetError());
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131 quit(1);
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132 }
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133
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134 if (SDL_SetVideoMode(640, 480, 0, SDL_OPENGL) == NULL) {
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135 printf("Unable to open video mode : %s\n", SDL_GetError());
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136 quit(1);
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137 }
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138
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139 /* Set the window manager title bar */
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140 SDL_WM_SetCaption("SDL Dynamic OpenGL Loading Test", "testdyngl");
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141
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142 init_glfuncs(&f);
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4ab6d1fd028f Date: Sat, 26 Jun 2004 14:58:42 +0300
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143
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144 for (i = 0; i < NB_PIXELS; i++) {
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145 pixels[3 * i] = rand() % 250 - 125;
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146 pixels[3 * i + 1] = rand() % 250 - 125;
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147 pixels[3 * i + 2] = rand() % 250 - 125;
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148 }
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149
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150 f.glViewport(0, 0, 640, 480);
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151
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152 f.glMatrixMode(GL_PROJECTION);
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153 f.glLoadIdentity();
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154 f.glOrtho(-100, 100, -100, 100, -500, 500);
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155
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156 f.glMatrixMode(GL_MODELVIEW);
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157 f.glLoadIdentity();
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158
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159 f.glEnable(GL_DEPTH_TEST);
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160 f.glDisable(GL_TEXTURE_2D);
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161 f.glEnable(GL_BLEND);
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162 f.glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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163
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164 f.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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165 f.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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166
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167 f.glEnable(GL_POINT_SMOOTH);
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168 f.glHint(GL_POINT_SMOOTH_HINT, GL_NICEST);
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169 f.glPointSize(5.0f);
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170 f.glEnable(GL_FOG);
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171 f.glFogf(GL_FOG_START, -500);
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172 f.glFogf(GL_FOG_END, 500);
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173 f.glFogf(GL_FOG_DENSITY, 0.005);
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174
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175 do {
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176 f.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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177
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178 f.glRotatef(2.0, 1.0, 1.0, 1.0);
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179 f.glRotatef(1.0, 0.0, 1.0, 1.0);
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180
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181 f.glColor4ub(255, 255, 255, 255);
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182 f.glBegin(GL_POINTS);
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183 for (i = 0; i < NB_PIXELS; i++) {
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184 f.glVertex3f(pixels[3 * i], pixels[3 * i + 1], pixels[3 * i + 2]);
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185 }
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186 f.glEnd();
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187 SDL_GL_SwapBuffers();
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188
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189 while (SDL_PollEvent(&event)) {
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190 if (event.type == SDL_KEYDOWN)
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191 done = 1;
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192 }
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193
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194 SDL_Delay(20);
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195 } while (!done);
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196
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197 SDL_Quit();
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198 return 0;
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199 }
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200
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201 #else /* HAVE_OPENGL */
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202
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203 int
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204 main(int argc, char *argv[])
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205 {
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206 printf("No OpenGL support on this system\n");
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207 return 1;
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208 }
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209
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210 #endif /* HAVE_OPENGL */