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root |
1.1 |
#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <math.h> |
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#include "SDL.h" |
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#include "SDL_opengl.h" |
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/* Undefine this if you want a flat cube instead of a rainbow cube */ |
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#define SHADED_CUBE |
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/* Define this to be the name of the logo image to use with -logo */ |
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#define LOGO_FILE "icon.bmp" |
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static SDL_Surface *global_image = NULL; |
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static GLuint global_texture = 0; |
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root |
1.2 |
#include "entity.h" |
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root |
1.1 |
/**********************************************************************/ |
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void |
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HotKey_ToggleFullScreen (void) |
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{ |
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SDL_Surface *screen; |
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screen = SDL_GetVideoSurface (); |
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if (SDL_WM_ToggleFullScreen (screen)) |
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{ |
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printf ("Toggled fullscreen mode - now %s\n", |
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(screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed"); |
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} |
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else |
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{ |
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printf ("Unable to toggle fullscreen mode\n"); |
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} |
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} |
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void |
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HotKey_ToggleGrab (void) |
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{ |
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SDL_GrabMode mode; |
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printf ("Ctrl-G: toggling input grab!\n"); |
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mode = SDL_WM_GrabInput (SDL_GRAB_QUERY); |
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if (mode == SDL_GRAB_ON) |
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{ |
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printf ("Grab was on\n"); |
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} |
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else |
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{ |
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printf ("Grab was off\n"); |
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} |
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mode = SDL_WM_GrabInput (mode ? SDL_GRAB_OFF : SDL_GRAB_ON); |
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if (mode == SDL_GRAB_ON) |
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{ |
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printf ("Grab is now on\n"); |
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} |
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else |
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{ |
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printf ("Grab is now off\n"); |
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} |
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} |
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void |
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HotKey_Iconify (void) |
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{ |
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printf ("Ctrl-Z: iconifying window!\n"); |
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SDL_WM_IconifyWindow (); |
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} |
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int |
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HandleEvent (SDL_Event * event) |
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{ |
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int done; |
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done = 0; |
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switch (event->type) |
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{ |
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case SDL_ACTIVEEVENT: |
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/* See what happened */ |
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printf ("app %s ", event->active.gain ? "gained" : "lost"); |
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if (event->active.state & SDL_APPACTIVE) |
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{ |
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printf ("active "); |
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} |
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else if (event->active.state & SDL_APPMOUSEFOCUS) |
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{ |
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printf ("mouse "); |
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} |
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else if (event->active.state & SDL_APPINPUTFOCUS) |
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{ |
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printf ("input "); |
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} |
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printf ("focus\n"); |
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break; |
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case SDL_KEYDOWN: |
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if (event->key.keysym.sym == SDLK_ESCAPE) |
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{ |
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done = 1; |
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} |
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if ((event->key.keysym.sym == SDLK_g) && |
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(event->key.keysym.mod & KMOD_CTRL)) |
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{ |
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HotKey_ToggleGrab (); |
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} |
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if ((event->key.keysym.sym == SDLK_z) && |
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(event->key.keysym.mod & KMOD_CTRL)) |
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{ |
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HotKey_Iconify (); |
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} |
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if ((event->key.keysym.sym == SDLK_RETURN) && |
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(event->key.keysym.mod & KMOD_ALT)) |
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{ |
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HotKey_ToggleFullScreen (); |
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} |
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printf ("key '%s' pressed\n", SDL_GetKeyName (event->key.keysym.sym)); |
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break; |
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case SDL_QUIT: |
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done = 1; |
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break; |
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} |
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return (done); |
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} |
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void |
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SDL_GL_Enter2DMode () |
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{ |
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SDL_Surface *screen = SDL_GetVideoSurface (); |
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/* Note, there may be other things you need to change, |
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depending on how you have your OpenGL state set up. |
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*/ |
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glPushAttrib (GL_ENABLE_BIT); |
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glDisable (GL_DEPTH_TEST); |
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glDisable (GL_CULL_FACE); |
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glEnable (GL_TEXTURE_2D); |
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/* This allows alpha blending of 2D textures with the scene */ |
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glEnable (GL_BLEND); |
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glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
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glViewport (0, 0, screen->w, screen->h); |
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glMatrixMode (GL_PROJECTION); |
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glPushMatrix (); |
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glLoadIdentity (); |
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glOrtho (0.0, (GLdouble) screen->w, (GLdouble) screen->h, 0.0, 0.0, 1.0); |
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glMatrixMode (GL_MODELVIEW); |
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glPushMatrix (); |
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glLoadIdentity (); |
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glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL); |
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} |
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void |
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SDL_GL_Leave2DMode () |
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{ |
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glMatrixMode (GL_MODELVIEW); |
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glPopMatrix (); |
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glMatrixMode (GL_PROJECTION); |
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glPopMatrix (); |
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glPopAttrib (); |
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} |
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/* Quick utility function for texture creation */ |
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static int |
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power_of_two (int input) |
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{ |
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int value = 1; |
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while (value < input) |
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{ |
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value <<= 1; |
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} |
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return value; |
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} |
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GLuint |
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SDL_GL_LoadTexture (SDL_Surface * surface, GLfloat * texcoord) |
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{ |
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GLuint texture; |
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int w, h; |
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SDL_Surface *image; |
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SDL_Rect area; |
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Uint32 saved_flags; |
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Uint8 saved_alpha; |
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/* Use the surface width and height expanded to powers of 2 */ |
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w = power_of_two (surface->w); |
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h = power_of_two (surface->h); |
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texcoord[0] = 0.0f; /* Min X */ |
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texcoord[1] = 0.0f; /* Min Y */ |
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texcoord[2] = (GLfloat) surface->w / w; /* Max X */ |
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texcoord[3] = (GLfloat) surface->h / h; /* Max Y */ |
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image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32, |
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ |
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0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 |
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#else |
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0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF |
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#endif |
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); |
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if (image == NULL) |
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{ |
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return 0; |
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} |
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/* Save the alpha blending attributes */ |
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saved_flags = surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); |
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saved_alpha = surface->format->alpha; |
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if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) |
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{ |
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SDL_SetAlpha (surface, 0, 0); |
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} |
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/* Copy the surface into the GL texture image */ |
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area.x = 0; |
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area.y = 0; |
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area.w = surface->w; |
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area.h = surface->h; |
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SDL_BlitSurface (surface, &area, image, &area); |
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/* Restore the alpha blending attributes */ |
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if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) |
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{ |
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SDL_SetAlpha (surface, saved_flags, saved_alpha); |
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} |
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/* Create an OpenGL texture for the image */ |
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glGenTextures (1, &texture); |
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glBindTexture (GL_TEXTURE_2D, texture); |
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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glTexImage2D (GL_TEXTURE_2D, |
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0, |
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GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels); |
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SDL_FreeSurface (image); /* No longer needed */ |
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return texture; |
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} |
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int |
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RunGLTest (int argc, char *argv[], |
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int logo, int slowly, int bpp, float gamma, int noframe, int fsaa) |
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{ |
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int i; |
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int rgb_size[3]; |
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int w = 640; |
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int h = 480; |
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int done = 0; |
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int frames; |
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Uint32 start_time, this_time; |
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root |
1.2 |
Uint32 video_flags; |
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root |
1.1 |
int value; |
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if (SDL_Init (SDL_INIT_VIDEO) < 0) |
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{ |
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fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ()); |
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exit (1); |
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} |
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/* See if we should detect the display depth */ |
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if (bpp == 0) |
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{ |
280 |
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if (SDL_GetVideoInfo ()->vfmt->BitsPerPixel <= 8) |
281 |
root |
1.3 |
bpp = 8; |
282 |
root |
1.1 |
else |
283 |
root |
1.3 |
bpp = 16; /* More doesn't seem to work */ |
284 |
root |
1.1 |
} |
285 |
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286 |
root |
1.2 |
video_flags = SDL_OPENGL; |
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288 |
root |
1.1 |
for (i = 1; argv[i]; ++i) |
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root |
1.3 |
if (strcmp (argv[1], "-fullscreen") == 0) |
290 |
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video_flags |= SDL_FULLSCREEN; |
291 |
root |
1.1 |
|
292 |
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if (noframe) |
293 |
root |
1.3 |
video_flags |= SDL_NOFRAME; |
294 |
root |
1.1 |
|
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/* Initialize the display */ |
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switch (bpp) |
297 |
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{ |
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case 8: |
299 |
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rgb_size[0] = 3; |
300 |
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rgb_size[1] = 3; |
301 |
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rgb_size[2] = 2; |
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break; |
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root |
1.3 |
|
304 |
root |
1.1 |
case 15: |
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case 16: |
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rgb_size[0] = 5; |
307 |
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rgb_size[1] = 5; |
308 |
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rgb_size[2] = 5; |
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break; |
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root |
1.3 |
|
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root |
1.1 |
default: |
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rgb_size[0] = 8; |
313 |
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rgb_size[1] = 8; |
314 |
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rgb_size[2] = 8; |
315 |
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break; |
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} |
317 |
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SDL_GL_SetAttribute (SDL_GL_RED_SIZE, rgb_size[0]); |
318 |
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SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, rgb_size[1]); |
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SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, rgb_size[2]); |
320 |
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SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 16); |
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SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1); |
322 |
root |
1.3 |
|
323 |
root |
1.1 |
if (fsaa) |
324 |
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{ |
325 |
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SDL_GL_SetAttribute (SDL_GL_MULTISAMPLEBUFFERS, 1); |
326 |
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SDL_GL_SetAttribute (SDL_GL_MULTISAMPLESAMPLES, fsaa); |
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} |
328 |
root |
1.3 |
|
329 |
root |
1.1 |
if (SDL_SetVideoMode (w, h, bpp, video_flags) == NULL) |
330 |
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{ |
331 |
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fprintf (stderr, "Couldn't set GL mode: %s\n", SDL_GetError ()); |
332 |
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SDL_Quit (); |
333 |
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exit (1); |
334 |
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} |
335 |
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336 |
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printf ("Screen BPP: %d\n", SDL_GetVideoSurface ()->format->BitsPerPixel); |
337 |
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printf ("\n"); |
338 |
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printf ("Vendor : %s\n", glGetString (GL_VENDOR)); |
339 |
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printf ("Renderer : %s\n", glGetString (GL_RENDERER)); |
340 |
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printf ("Version : %s\n", glGetString (GL_VERSION)); |
341 |
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printf ("Extensions : %s\n", glGetString (GL_EXTENSIONS)); |
342 |
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printf ("\n"); |
343 |
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344 |
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SDL_GL_GetAttribute (SDL_GL_RED_SIZE, &value); |
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printf ("SDL_GL_RED_SIZE: requested %d, got %d\n", rgb_size[0], value); |
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SDL_GL_GetAttribute (SDL_GL_GREEN_SIZE, &value); |
347 |
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printf ("SDL_GL_GREEN_SIZE: requested %d, got %d\n", rgb_size[1], value); |
348 |
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SDL_GL_GetAttribute (SDL_GL_BLUE_SIZE, &value); |
349 |
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printf ("SDL_GL_BLUE_SIZE: requested %d, got %d\n", rgb_size[2], value); |
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SDL_GL_GetAttribute (SDL_GL_DEPTH_SIZE, &value); |
351 |
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printf ("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", bpp, value); |
352 |
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SDL_GL_GetAttribute (SDL_GL_DOUBLEBUFFER, &value); |
353 |
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printf ("SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value); |
354 |
root |
1.3 |
|
355 |
root |
1.1 |
if (fsaa) |
356 |
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{ |
357 |
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SDL_GL_GetAttribute (SDL_GL_MULTISAMPLEBUFFERS, &value); |
358 |
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printf ("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value); |
359 |
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SDL_GL_GetAttribute (SDL_GL_MULTISAMPLESAMPLES, &value); |
360 |
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printf ("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa, |
361 |
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value); |
362 |
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} |
363 |
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|
364 |
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/* Set the window manager title bar */ |
365 |
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SDL_WM_SetCaption ("SDL GL test", "testgl"); |
366 |
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|
367 |
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/* Set the gamma for the window */ |
368 |
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if (gamma != 0.0) |
369 |
root |
1.3 |
SDL_SetGamma (gamma, gamma, gamma); |
370 |
root |
1.1 |
|
371 |
root |
1.3 |
view v; |
372 |
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v.p = point (0, 0, 0); |
373 |
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v.d = vec3 (0, 0, -1); |
374 |
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v.u = vec3 (0, 1, 0); |
375 |
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v.w = w; v.h = h; |
376 |
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v.fov = 90; |
377 |
root |
1.1 |
|
378 |
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glMatrixMode (GL_MODELVIEW); |
379 |
|
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glLoadIdentity (); |
380 |
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|
381 |
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glEnable (GL_DEPTH_TEST); |
382 |
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|
383 |
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glDepthFunc (GL_LESS); |
384 |
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|
385 |
|
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glShadeModel (GL_SMOOTH); |
386 |
root |
1.3 |
GLfloat ambient[4] = { 1, 1, 1, 1 }; |
387 |
|
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glEnable (GL_LIGHTING); |
388 |
|
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glEnable (GL_COLOR_MATERIAL); |
389 |
|
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glLightModelfv (GL_LIGHT_MODEL_AMBIENT, ambient); |
390 |
root |
1.1 |
|
391 |
|
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/* Loop until done. */ |
392 |
|
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start_time = SDL_GetTicks (); |
393 |
|
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frames = 0; |
394 |
|
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while (!done) |
395 |
|
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{ |
396 |
|
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GLenum gl_error; |
397 |
|
|
char *sdl_error; |
398 |
|
|
SDL_Event event; |
399 |
|
|
|
400 |
|
|
/* Do our drawing, too. */ |
401 |
|
|
glClearColor (0.0, 0.0, 0.0, 1.0); |
402 |
|
|
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
403 |
|
|
|
404 |
root |
1.3 |
static GLfloat ry; |
405 |
|
|
ry += 0.1; |
406 |
|
|
v.d.x = cos (ry); |
407 |
|
|
v.d.z = sin (ry); |
408 |
root |
1.1 |
|
409 |
root |
1.3 |
draw_context c; |
410 |
|
|
v.draw (c); |
411 |
root |
1.1 |
|
412 |
|
|
SDL_GL_SwapBuffers (); |
413 |
|
|
|
414 |
|
|
/* Check for error conditions. */ |
415 |
|
|
gl_error = glGetError (); |
416 |
|
|
|
417 |
|
|
if (gl_error != GL_NO_ERROR) |
418 |
root |
1.3 |
fprintf (stderr, "testgl: OpenGL error: %d\n", gl_error); |
419 |
root |
1.1 |
|
420 |
|
|
sdl_error = SDL_GetError (); |
421 |
|
|
|
422 |
|
|
if (sdl_error[0] != '\0') |
423 |
|
|
{ |
424 |
|
|
fprintf (stderr, "testgl: SDL error '%s'\n", sdl_error); |
425 |
|
|
SDL_ClearError (); |
426 |
|
|
} |
427 |
|
|
|
428 |
|
|
/* Allow the user to see what's happening */ |
429 |
|
|
SDL_Delay (20); |
430 |
|
|
|
431 |
|
|
/* Check if there's a pending event. */ |
432 |
|
|
while (SDL_PollEvent (&event)) |
433 |
|
|
{ |
434 |
|
|
done = HandleEvent (&event); |
435 |
|
|
} |
436 |
|
|
++frames; |
437 |
|
|
} |
438 |
|
|
|
439 |
|
|
/* Print out the frames per second */ |
440 |
|
|
this_time = SDL_GetTicks (); |
441 |
|
|
if (this_time != start_time) |
442 |
|
|
{ |
443 |
|
|
printf ("%2.2f FPS\n", |
444 |
|
|
((float) frames / (this_time - start_time)) * 1000.0); |
445 |
|
|
} |
446 |
|
|
|
447 |
|
|
if (global_image) |
448 |
|
|
{ |
449 |
|
|
SDL_FreeSurface (global_image); |
450 |
|
|
global_image = NULL; |
451 |
|
|
} |
452 |
|
|
if (global_texture) |
453 |
|
|
{ |
454 |
|
|
glDeleteTextures (1, &global_texture); |
455 |
|
|
global_texture = 0; |
456 |
|
|
} |
457 |
|
|
|
458 |
|
|
/* Destroy our GL context, etc. */ |
459 |
|
|
SDL_Quit (); |
460 |
|
|
return (0); |
461 |
|
|
} |
462 |
|
|
|
463 |
|
|
int |
464 |
|
|
main (int argc, char *argv[]) |
465 |
|
|
{ |
466 |
|
|
int i, logo; |
467 |
|
|
int numtests; |
468 |
|
|
int bpp = 0; |
469 |
|
|
int slowly; |
470 |
|
|
float gamma = 0.0; |
471 |
|
|
int noframe = 0; |
472 |
|
|
int fsaa = 0; |
473 |
|
|
|
474 |
|
|
logo = 0; |
475 |
|
|
slowly = 0; |
476 |
|
|
numtests = 1; |
477 |
|
|
for (i = 1; argv[i]; ++i) |
478 |
|
|
{ |
479 |
|
|
if (strcmp (argv[i], "-twice") == 0) |
480 |
|
|
{ |
481 |
|
|
++numtests; |
482 |
|
|
} |
483 |
|
|
if (strcmp (argv[i], "-slow") == 0) |
484 |
|
|
{ |
485 |
|
|
slowly = 1; |
486 |
|
|
} |
487 |
|
|
if (strcmp (argv[i], "-bpp") == 0) |
488 |
|
|
{ |
489 |
|
|
bpp = atoi (argv[++i]); |
490 |
|
|
} |
491 |
|
|
if (strcmp (argv[i], "-gamma") == 0) |
492 |
|
|
{ |
493 |
|
|
gamma = (float) atof (argv[++i]); |
494 |
|
|
} |
495 |
|
|
if (strcmp (argv[i], "-noframe") == 0) |
496 |
|
|
{ |
497 |
|
|
noframe = 1; |
498 |
|
|
} |
499 |
|
|
if (strcmp (argv[i], "-fsaa") == 0) |
500 |
|
|
{ |
501 |
|
|
++fsaa; |
502 |
|
|
} |
503 |
|
|
if (strncmp (argv[i], "-h", 2) == 0) |
504 |
|
|
{ |
505 |
|
|
printf |
506 |
|
|
("Usage: %s [-twice] [-logo] [-slow] [-bpp n] [-gamma n] [-noframe] [-fsaa]\n", |
507 |
|
|
argv[0]); |
508 |
|
|
exit (0); |
509 |
|
|
} |
510 |
|
|
} |
511 |
|
|
for (i = 0; i < numtests; ++i) |
512 |
|
|
{ |
513 |
|
|
RunGLTest (argc, argv, logo, slowly, bpp, gamma, noframe, fsaa); |
514 |
|
|
} |
515 |
|
|
return 0; |
516 |
|
|
} |