cvsroot/libgender/test.C

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>

#include "SDL.h"

#include "SDL_opengl.h"

/* Undefine this if you want a flat cube instead of a rainbow cube */
#define SHADED_CUBE

/* Define this to be the name of the logo image to use with -logo */
#define LOGO_FILE       "icon.bmp"

/* The SDL_OPENGLBLIT interface is deprecated.
   The code is still available for benchmark purposes though.
*/

static SDL_bool USE_DEPRECATED_OPENGLBLIT = SDL_FALSE;

static SDL_Surface *global_image = NULL;
static GLuint global_texture = 0;

/**********************************************************************/

void
HotKey_ToggleFullScreen (void)
{
  SDL_Surface *screen;

  screen = SDL_GetVideoSurface ();
  if (SDL_WM_ToggleFullScreen (screen))
    {
      printf ("Toggled fullscreen mode - now %s\n",
              (screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed");
    }
  else
    {
      printf ("Unable to toggle fullscreen mode\n");
    }
}

void
HotKey_ToggleGrab (void)
{
  SDL_GrabMode mode;

  printf ("Ctrl-G: toggling input grab!\n");
  mode = SDL_WM_GrabInput (SDL_GRAB_QUERY);
  if (mode == SDL_GRAB_ON)
    {
      printf ("Grab was on\n");
    }
  else
    {
      printf ("Grab was off\n");
    }

  mode = SDL_WM_GrabInput (mode ? SDL_GRAB_OFF : SDL_GRAB_ON);
  if (mode == SDL_GRAB_ON)
    {
      printf ("Grab is now on\n");
    }
  else
    {
      printf ("Grab is now off\n");
    }
}

void
HotKey_Iconify (void)
{
  printf ("Ctrl-Z: iconifying window!\n");
  SDL_WM_IconifyWindow ();
}

int
HandleEvent (SDL_Event * event)
{
  int done;

  done = 0;
  switch (event->type)
    {
    case SDL_ACTIVEEVENT:
      /* See what happened */
      printf ("app %s ", event->active.gain ? "gained" : "lost");
      if (event->active.state & SDL_APPACTIVE)
        {
          printf ("active ");
        }
      else if (event->active.state & SDL_APPMOUSEFOCUS)
        {
          printf ("mouse ");
        }
      else if (event->active.state & SDL_APPINPUTFOCUS)
        {
          printf ("input ");
        }

      printf ("focus\n");
      break;

    case SDL_KEYDOWN:
      if (event->key.keysym.sym == SDLK_ESCAPE)
        {
          done = 1;
        }

      if ((event->key.keysym.sym == SDLK_g) &&
          (event->key.keysym.mod & KMOD_CTRL))
        {
          HotKey_ToggleGrab ();
        }

      if ((event->key.keysym.sym == SDLK_z) &&
          (event->key.keysym.mod & KMOD_CTRL))
        {
          HotKey_Iconify ();
        }

      if ((event->key.keysym.sym == SDLK_RETURN) &&
          (event->key.keysym.mod & KMOD_ALT))
        {
          HotKey_ToggleFullScreen ();
        }

      printf ("key '%s' pressed\n", SDL_GetKeyName (event->key.keysym.sym));
      break;

    case SDL_QUIT:
      done = 1;
      break;
    }

  return (done);
}

void
SDL_GL_Enter2DMode ()
{
  SDL_Surface *screen = SDL_GetVideoSurface ();

  /* Note, there may be other things you need to change,
     depending on how you have your OpenGL state set up.
   */
  glPushAttrib (GL_ENABLE_BIT);
  glDisable (GL_DEPTH_TEST);
  glDisable (GL_CULL_FACE);
  glEnable (GL_TEXTURE_2D);

  /* This allows alpha blending of 2D textures with the scene */
  glEnable (GL_BLEND);
  glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

  glViewport (0, 0, screen->w, screen->h);

  glMatrixMode (GL_PROJECTION);
  glPushMatrix ();
  glLoadIdentity ();

  glOrtho (0.0, (GLdouble) screen->w, (GLdouble) screen->h, 0.0, 0.0, 1.0);

  glMatrixMode (GL_MODELVIEW);
  glPushMatrix ();
  glLoadIdentity ();

  glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
}

void
SDL_GL_Leave2DMode ()
{
  glMatrixMode (GL_MODELVIEW);
  glPopMatrix ();

  glMatrixMode (GL_PROJECTION);
  glPopMatrix ();

  glPopAttrib ();
}

/* Quick utility function for texture creation */
static int
power_of_two (int input)
{
  int value = 1;

  while (value < input)
    {
      value <<= 1;
    }
  return value;
}

GLuint
SDL_GL_LoadTexture (SDL_Surface * surface, GLfloat * texcoord)
{
  GLuint texture;
  int w, h;
  SDL_Surface *image;
  SDL_Rect area;
  Uint32 saved_flags;
  Uint8 saved_alpha;

  /* Use the surface width and height expanded to powers of 2 */
  w = power_of_two (surface->w);
  h = power_of_two (surface->h);
  texcoord[0] = 0.0f;           /* Min X */
  texcoord[1] = 0.0f;           /* Min Y */
  texcoord[2] = (GLfloat) surface->w / w;       /* Max X */
  texcoord[3] = (GLfloat) surface->h / h;       /* Max Y */

  image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32,
#if SDL_BYTEORDER == SDL_LIL_ENDIAN     /* OpenGL RGBA masks */
                                0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
#else
                                0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
#endif
    );
  if (image == NULL)
    {
      return 0;
    }

  /* Save the alpha blending attributes */
  saved_flags = surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK);
  saved_alpha = surface->format->alpha;
  if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
    {
      SDL_SetAlpha (surface, 0, 0);
    }

  /* Copy the surface into the GL texture image */
  area.x = 0;
  area.y = 0;
  area.w = surface->w;
  area.h = surface->h;
  SDL_BlitSurface (surface, &area, image, &area);

  /* Restore the alpha blending attributes */
  if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
    {
      SDL_SetAlpha (surface, saved_flags, saved_alpha);
    }

  /* Create an OpenGL texture for the image */
  glGenTextures (1, &texture);
  glBindTexture (GL_TEXTURE_2D, texture);
  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  glTexImage2D (GL_TEXTURE_2D,
                0,
                GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
  SDL_FreeSurface (image);      /* No longer needed */

  return texture;
}


void
DrawLogoTexture (void)
{
  static GLfloat texMinX, texMinY;
  static GLfloat texMaxX, texMaxY;
  static int x = 0;
  static int y = 0;
  static int w, h;
  static int delta_x = 1;
  static int delta_y = 1;
  static Uint32 last_moved = 0;

  SDL_Surface *screen = SDL_GetVideoSurface ();

  if (!global_texture)
    {
      SDL_Surface *image;
      GLfloat texcoord[4];

      /* Load the image (could use SDL_image library here) */
      image = SDL_LoadBMP (LOGO_FILE);
      if (image == NULL)
        {
          return;
        }
      w = image->w;
      h = image->h;

      /* Convert the image into an OpenGL texture */
      global_texture = SDL_GL_LoadTexture (image, texcoord);

      /* Make texture coordinates easy to understand */
      texMinX = texcoord[0];
      texMinY = texcoord[1];
      texMaxX = texcoord[2];
      texMaxY = texcoord[3];

      /* We don't need the original image anymore */
      SDL_FreeSurface (image);

      /* Make sure that the texture conversion is okay */
      if (!global_texture)
        {
          return;
        }
    }

  /* Move the image around */
  x += delta_x;
  if (x < 0)
    {
      x = 0;
      delta_x = -delta_x;
    }
  else if ((x + w) > screen->w)
    {
      x = screen->w - w;
      delta_x = -delta_x;
    }
  y += delta_y;
  if (y < 0)
    {
      y = 0;
      delta_y = -delta_y;
    }
  else if ((y + h) > screen->h)
    {
      y = screen->h - h;
      delta_y = -delta_y;
    }

  /* Show the image on the screen */
  SDL_GL_Enter2DMode ();
  glBindTexture (GL_TEXTURE_2D, global_texture);
  glBegin (GL_TRIANGLE_STRIP);
  glTexCoord2f (texMinX, texMinY);
  glVertex2i (x, y);
  glTexCoord2f (texMaxX, texMinY);
  glVertex2i (x + w, y);
  glTexCoord2f (texMinX, texMaxY);
  glVertex2i (x, y + h);
  glTexCoord2f (texMaxX, texMaxY);
  glVertex2i (x + w, y + h);
  glEnd ();
  SDL_GL_Leave2DMode ();
}

int
RunGLTest (int argc, char *argv[],
           int logo, int slowly, int bpp, float gamma, int noframe, int fsaa)
{
  int i;
  int rgb_size[3];
  int w = 640;
  int h = 480;
  int done = 0;
  int frames;
  Uint32 start_time, this_time;
  int value;

  if (SDL_Init (SDL_INIT_VIDEO) < 0)
    {
      fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ());
      exit (1);
    }

  /* See if we should detect the display depth */
  if (bpp == 0)
    {
      if (SDL_GetVideoInfo ()->vfmt->BitsPerPixel <= 8)
        {
          bpp = 8;
        }
      else
        {
          bpp = 16;             /* More doesn't seem to work */
        }
    }

  /* Set the flags we want to use for setting the video mode */
  if (logo && USE_DEPRECATED_OPENGLBLIT)
    {
      video_flags = SDL_OPENGLBLIT;
    }
  else
    {
      video_flags = SDL_OPENGL;
    }
  for (i = 1; argv[i]; ++i)
    {
      if (strcmp (argv[1], "-fullscreen") == 0)
        {
          video_flags |= SDL_FULLSCREEN;
        }
    }

  if (noframe)
    {
      video_flags |= SDL_NOFRAME;
    }

  /* Initialize the display */
  switch (bpp)
    {
    case 8:
      rgb_size[0] = 3;
      rgb_size[1] = 3;
      rgb_size[2] = 2;
      break;
    case 15:
    case 16:
      rgb_size[0] = 5;
      rgb_size[1] = 5;
      rgb_size[2] = 5;
      break;
    default:
      rgb_size[0] = 8;
      rgb_size[1] = 8;
      rgb_size[2] = 8;
      break;
    }
  SDL_GL_SetAttribute (SDL_GL_RED_SIZE, rgb_size[0]);
  SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, rgb_size[1]);
  SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, rgb_size[2]);
  SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 16);
  SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
  if (fsaa)
    {
      SDL_GL_SetAttribute (SDL_GL_MULTISAMPLEBUFFERS, 1);
      SDL_GL_SetAttribute (SDL_GL_MULTISAMPLESAMPLES, fsaa);
    }
  if (SDL_SetVideoMode (w, h, bpp, video_flags) == NULL)
    {
      fprintf (stderr, "Couldn't set GL mode: %s\n", SDL_GetError ());
      SDL_Quit ();
      exit (1);
    }

  printf ("Screen BPP: %d\n", SDL_GetVideoSurface ()->format->BitsPerPixel);
  printf ("\n");
  printf ("Vendor     : %s\n", glGetString (GL_VENDOR));
  printf ("Renderer   : %s\n", glGetString (GL_RENDERER));
  printf ("Version    : %s\n", glGetString (GL_VERSION));
  printf ("Extensions : %s\n", glGetString (GL_EXTENSIONS));
  printf ("\n");

  SDL_GL_GetAttribute (SDL_GL_RED_SIZE, &value);
  printf ("SDL_GL_RED_SIZE: requested %d, got %d\n", rgb_size[0], value);
  SDL_GL_GetAttribute (SDL_GL_GREEN_SIZE, &value);
  printf ("SDL_GL_GREEN_SIZE: requested %d, got %d\n", rgb_size[1], value);
  SDL_GL_GetAttribute (SDL_GL_BLUE_SIZE, &value);
  printf ("SDL_GL_BLUE_SIZE: requested %d, got %d\n", rgb_size[2], value);
  SDL_GL_GetAttribute (SDL_GL_DEPTH_SIZE, &value);
  printf ("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", bpp, value);
  SDL_GL_GetAttribute (SDL_GL_DOUBLEBUFFER, &value);
  printf ("SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value);
  if (fsaa)
    {
      SDL_GL_GetAttribute (SDL_GL_MULTISAMPLEBUFFERS, &value);
      printf ("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
      SDL_GL_GetAttribute (SDL_GL_MULTISAMPLESAMPLES, &value);
      printf ("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
              value);
    }

  /* Set the window manager title bar */
  SDL_WM_SetCaption ("SDL GL test", "testgl");

  /* Set the gamma for the window */
  if (gamma != 0.0)
    {
      SDL_SetGamma (gamma, gamma, gamma);
    }

  glViewport (0, 0, w, h);
  glMatrixMode (GL_PROJECTION);
  glLoadIdentity ();

  glOrtho (-2.0, 2.0, -2.0, 2.0, -20.0, 20.0);

  glMatrixMode (GL_MODELVIEW);
  glLoadIdentity ();

  glEnable (GL_DEPTH_TEST);

  glDepthFunc (GL_LESS);

  glShadeModel (GL_SMOOTH);

  /* Loop until done. */
  start_time = SDL_GetTicks ();
  frames = 0;
  while (!done)
    {
      GLenum gl_error;
      char *sdl_error;
      SDL_Event event;

      /* Do our drawing, too. */
      glClearColor (0.0, 0.0, 0.0, 1.0);
      glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

      glBegin (GL_QUADS);

#ifdef SHADED_CUBE
      glColor3fv (color[0]);
      glVertex3fv (cube[0]);
      glColor3fv (color[1]);
      glVertex3fv (cube[1]);
      glColor3fv (color[2]);
      glVertex3fv (cube[2]);
      glColor3fv (color[3]);
      glVertex3fv (cube[3]);

      glColor3fv (color[3]);
      glVertex3fv (cube[3]);
      glColor3fv (color[4]);
      glVertex3fv (cube[4]);
      glColor3fv (color[7]);
      glVertex3fv (cube[7]);
      glColor3fv (color[2]);
      glVertex3fv (cube[2]);

      glColor3fv (color[0]);
      glVertex3fv (cube[0]);
      glColor3fv (color[5]);
      glVertex3fv (cube[5]);
      glColor3fv (color[6]);
      glVertex3fv (cube[6]);
      glColor3fv (color[1]);
      glVertex3fv (cube[1]);

      glColor3fv (color[5]);
      glVertex3fv (cube[5]);
      glColor3fv (color[4]);
      glVertex3fv (cube[4]);
      glColor3fv (color[7]);
      glVertex3fv (cube[7]);
      glColor3fv (color[6]);
      glVertex3fv (cube[6]);

      glColor3fv (color[5]);
      glVertex3fv (cube[5]);
      glColor3fv (color[0]);
      glVertex3fv (cube[0]);
      glColor3fv (color[3]);
      glVertex3fv (cube[3]);
      glColor3fv (color[4]);
      glVertex3fv (cube[4]);

      glColor3fv (color[6]);
      glVertex3fv (cube[6]);
      glColor3fv (color[1]);
      glVertex3fv (cube[1]);
      glColor3fv (color[2]);
      glVertex3fv (cube[2]);
      glColor3fv (color[7]);
      glVertex3fv (cube[7]);
#else // flat cube
      glColor3f (1.0, 0.0, 0.0);
      glVertex3fv (cube[0]);
      glVertex3fv (cube[1]);
      glVertex3fv (cube[2]);
      glVertex3fv (cube[3]);

      glColor3f (0.0, 1.0, 0.0);
      glVertex3fv (cube[3]);
      glVertex3fv (cube[4]);
      glVertex3fv (cube[7]);
      glVertex3fv (cube[2]);

      glColor3f (0.0, 0.0, 1.0);
      glVertex3fv (cube[0]);
      glVertex3fv (cube[5]);
      glVertex3fv (cube[6]);
      glVertex3fv (cube[1]);

      glColor3f (0.0, 1.0, 1.0);
      glVertex3fv (cube[5]);
      glVertex3fv (cube[4]);
      glVertex3fv (cube[7]);
      glVertex3fv (cube[6]);

      glColor3f (1.0, 1.0, 0.0);
      glVertex3fv (cube[5]);
      glVertex3fv (cube[0]);
      glVertex3fv (cube[3]);
      glVertex3fv (cube[4]);

      glColor3f (1.0, 0.0, 1.0);
      glVertex3fv (cube[6]);
      glVertex3fv (cube[1]);
      glVertex3fv (cube[2]);
      glVertex3fv (cube[7]);
#endif /* SHADED_CUBE */

      glEnd ();

      glMatrixMode (GL_MODELVIEW);
      glRotatef (5.0, 1.0, 1.0, 1.0);

      SDL_GL_SwapBuffers ();

      /* Check for error conditions. */
      gl_error = glGetError ();

      if (gl_error != GL_NO_ERROR)
        {
          fprintf (stderr, "testgl: OpenGL error: %d\n", gl_error);
        }

      sdl_error = SDL_GetError ();

      if (sdl_error[0] != '\0')
        {
          fprintf (stderr, "testgl: SDL error '%s'\n", sdl_error);
          SDL_ClearError ();
        }

      /* Allow the user to see what's happening */
      if (slowly)
        {
          SDL_Delay (20);
        }
      SDL_Delay (20);

      /* Check if there's a pending event. */
      while (SDL_PollEvent (&event))
        {
          done = HandleEvent (&event);
        }
      ++frames;
    }

  /* Print out the frames per second */
  this_time = SDL_GetTicks ();
  if (this_time != start_time)
    {
      printf ("%2.2f FPS\n",
              ((float) frames / (this_time - start_time)) * 1000.0);
    }

  if (global_image)
    {
      SDL_FreeSurface (global_image);
      global_image = NULL;
    }
  if (global_texture)
    {
      glDeleteTextures (1, &global_texture);
      global_texture = 0;
    }

  /* Destroy our GL context, etc. */
  SDL_Quit ();
  return (0);
}

int
main (int argc, char *argv[])
{
  int i, logo;
  int numtests;
  int bpp = 0;
  int slowly;
  float gamma = 0.0;
  int noframe = 0;
  int fsaa = 0;

  logo = 0;
  slowly = 0;
  numtests = 1;
  for (i = 1; argv[i]; ++i)
    {
      if (strcmp (argv[i], "-twice") == 0)
        {
          ++numtests;
        }
      if (strcmp (argv[i], "-logo") == 0)
        {
          logo = 1;
          USE_DEPRECATED_OPENGLBLIT = SDL_FALSE;
        }
      if (strcmp (argv[i], "-logoblit") == 0)
        {
          logo = 1;
          USE_DEPRECATED_OPENGLBLIT = SDL_TRUE;
        }
      if (strcmp (argv[i], "-slow") == 0)
        {
          slowly = 1;
        }
      if (strcmp (argv[i], "-bpp") == 0)
        {
          bpp = atoi (argv[++i]);
        }
      if (strcmp (argv[i], "-gamma") == 0)
        {
          gamma = (float) atof (argv[++i]);
        }
      if (strcmp (argv[i], "-noframe") == 0)
        {
          noframe = 1;
        }
      if (strcmp (argv[i], "-fsaa") == 0)
        {
          ++fsaa;
        }
      if (strncmp (argv[i], "-h", 2) == 0)
        {
          printf
            ("Usage: %s [-twice] [-logo] [-slow] [-bpp n] [-gamma n] [-noframe] [-fsaa]\n",
             argv[0]);
          exit (0);
        }
    }
  for (i = 0; i < numtests; ++i)
    {
      RunGLTest (argc, argv, logo, slowly, bpp, gamma, noframe, fsaa);
    }
  return 0;
}
Revision:	1.1
Committed:	Sat Oct 2 12:10:40 2004 UTC (22 years ago) by root
Content type:	text/plain
Branch:	MAIN
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#include <stdlib.h>
2			#include <stdio.h>
3			#include <string.h>
4			#include <math.h>
5
6			#include "SDL.h"
7
8			#include "SDL_opengl.h"
9
10			/* Undefine this if you want a flat cube instead of a rainbow cube */
11			#define SHADED_CUBE
12
13			/* Define this to be the name of the logo image to use with -logo */
14			#define LOGO_FILE "icon.bmp"
15
16			/* The SDL_OPENGLBLIT interface is deprecated.
17			The code is still available for benchmark purposes though.
18			*/
19
20			static SDL_bool USE_DEPRECATED_OPENGLBLIT = SDL_FALSE;
21
22			static SDL_Surface *global_image = NULL;
23			static GLuint global_texture = 0;
24
25			/**********************************************************************/
26
27			void
28			HotKey_ToggleFullScreen (void)
29			{
30			SDL_Surface *screen;
31
32			screen = SDL_GetVideoSurface ();
33			if (SDL_WM_ToggleFullScreen (screen))
34			{
35			printf ("Toggled fullscreen mode - now %s\n",
36			(screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed");
37			}
38			else
39			{
40			printf ("Unable to toggle fullscreen mode\n");
41			}
42			}
43
44			void
45			HotKey_ToggleGrab (void)
46			{
47			SDL_GrabMode mode;
48
49			printf ("Ctrl-G: toggling input grab!\n");
50			mode = SDL_WM_GrabInput (SDL_GRAB_QUERY);
51			if (mode == SDL_GRAB_ON)
52			{
53			printf ("Grab was on\n");
54			}
55			else
56			{
57			printf ("Grab was off\n");
58			}
59
60			mode = SDL_WM_GrabInput (mode ? SDL_GRAB_OFF : SDL_GRAB_ON);
61			if (mode == SDL_GRAB_ON)
62			{
63			printf ("Grab is now on\n");
64			}
65			else
66			{
67			printf ("Grab is now off\n");
68			}
69			}
70
71			void
72			HotKey_Iconify (void)
73			{
74			printf ("Ctrl-Z: iconifying window!\n");
75			SDL_WM_IconifyWindow ();
76			}
77
78			int
79			HandleEvent (SDL_Event * event)
80			{
81			int done;
82
83			done = 0;
84			switch (event->type)
85			{
86			case SDL_ACTIVEEVENT:
87			/* See what happened */
88			printf ("app %s ", event->active.gain ? "gained" : "lost");
89			if (event->active.state & SDL_APPACTIVE)
90			{
91			printf ("active ");
92			}
93			else if (event->active.state & SDL_APPMOUSEFOCUS)
94			{
95			printf ("mouse ");
96			}
97			else if (event->active.state & SDL_APPINPUTFOCUS)
98			{
99			printf ("input ");
100			}
101
102			printf ("focus\n");
103			break;
104
105			case SDL_KEYDOWN:
106			if (event->key.keysym.sym == SDLK_ESCAPE)
107			{
108			done = 1;
109			}
110
111			if ((event->key.keysym.sym == SDLK_g) &&
112			(event->key.keysym.mod & KMOD_CTRL))
113			{
114			HotKey_ToggleGrab ();
115			}
116
117			if ((event->key.keysym.sym == SDLK_z) &&
118			(event->key.keysym.mod & KMOD_CTRL))
119			{
120			HotKey_Iconify ();
121			}
122
123			if ((event->key.keysym.sym == SDLK_RETURN) &&
124			(event->key.keysym.mod & KMOD_ALT))
125			{
126			HotKey_ToggleFullScreen ();
127			}
128
129			printf ("key '%s' pressed\n", SDL_GetKeyName (event->key.keysym.sym));
130			break;
131
132			case SDL_QUIT:
133			done = 1;
134			break;
135			}
136
137			return (done);
138			}
139
140			void
141			SDL_GL_Enter2DMode ()
142			{
143			SDL_Surface *screen = SDL_GetVideoSurface ();
144
145			/* Note, there may be other things you need to change,
146			depending on how you have your OpenGL state set up.
147			*/
148			glPushAttrib (GL_ENABLE_BIT);
149			glDisable (GL_DEPTH_TEST);
150			glDisable (GL_CULL_FACE);
151			glEnable (GL_TEXTURE_2D);
152
153			/* This allows alpha blending of 2D textures with the scene */
154			glEnable (GL_BLEND);
155			glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
156
157			glViewport (0, 0, screen->w, screen->h);
158
159			glMatrixMode (GL_PROJECTION);
160			glPushMatrix ();
161			glLoadIdentity ();
162
163			glOrtho (0.0, (GLdouble) screen->w, (GLdouble) screen->h, 0.0, 0.0, 1.0);
164
165			glMatrixMode (GL_MODELVIEW);
166			glPushMatrix ();
167			glLoadIdentity ();
168
169			glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
170			}
171
172			void
173			SDL_GL_Leave2DMode ()
174			{
175			glMatrixMode (GL_MODELVIEW);
176			glPopMatrix ();
177
178			glMatrixMode (GL_PROJECTION);
179			glPopMatrix ();
180
181			glPopAttrib ();
182			}
183
184			/* Quick utility function for texture creation */
185			static int
186			power_of_two (int input)
187			{
188			int value = 1;
189
190			while (value < input)
191			{
192			value <<= 1;
193			}
194			return value;
195			}
196
197			GLuint
198			SDL_GL_LoadTexture (SDL_Surface * surface, GLfloat * texcoord)
199			{
200			GLuint texture;
201			int w, h;
202			SDL_Surface *image;
203			SDL_Rect area;
204			Uint32 saved_flags;
205			Uint8 saved_alpha;
206
207			/* Use the surface width and height expanded to powers of 2 */
208			w = power_of_two (surface->w);
209			h = power_of_two (surface->h);
210			texcoord[0] = 0.0f; /* Min X */
211			texcoord[1] = 0.0f; /* Min Y */
212			texcoord[2] = (GLfloat) surface->w / w; /* Max X */
213			texcoord[3] = (GLfloat) surface->h / h; /* Max Y */
214
215			image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32,
216			#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
217			0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
218			#else
219			0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
220			#endif
221			);
222			if (image == NULL)
223			{
224			return 0;
225			}
226
227			/* Save the alpha blending attributes */
228			saved_flags = surface->flags & (SDL_SRCALPHA \| SDL_RLEACCELOK);
229			saved_alpha = surface->format->alpha;
230			if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
231			{
232			SDL_SetAlpha (surface, 0, 0);
233			}
234
235			/* Copy the surface into the GL texture image */
236			area.x = 0;
237			area.y = 0;
238			area.w = surface->w;
239			area.h = surface->h;
240			SDL_BlitSurface (surface, &area, image, &area);
241
242			/* Restore the alpha blending attributes */
243			if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
244			{
245			SDL_SetAlpha (surface, saved_flags, saved_alpha);
246			}
247
248			/* Create an OpenGL texture for the image */
249			glGenTextures (1, &texture);
250			glBindTexture (GL_TEXTURE_2D, texture);
251			glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
252			glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
253			glTexImage2D (GL_TEXTURE_2D,
254			0,
255			GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
256			SDL_FreeSurface (image); /* No longer needed */
257
258			return texture;
259			}
260
261
262			void
263			DrawLogoTexture (void)
264			{
265			static GLfloat texMinX, texMinY;
266			static GLfloat texMaxX, texMaxY;
267			static int x = 0;
268			static int y = 0;
269			static int w, h;
270			static int delta_x = 1;
271			static int delta_y = 1;
272			static Uint32 last_moved = 0;
273
274			SDL_Surface *screen = SDL_GetVideoSurface ();
275
276			if (!global_texture)
277			{
278			SDL_Surface *image;
279			GLfloat texcoord[4];
280
281			/* Load the image (could use SDL_image library here) */
282			image = SDL_LoadBMP (LOGO_FILE);
283			if (image == NULL)
284			{
285			return;
286			}
287			w = image->w;
288			h = image->h;
289
290			/* Convert the image into an OpenGL texture */
291			global_texture = SDL_GL_LoadTexture (image, texcoord);
292
293			/* Make texture coordinates easy to understand */
294			texMinX = texcoord[0];
295			texMinY = texcoord[1];
296			texMaxX = texcoord[2];
297			texMaxY = texcoord[3];
298
299			/* We don't need the original image anymore */
300			SDL_FreeSurface (image);
301
302			/* Make sure that the texture conversion is okay */
303			if (!global_texture)
304			{
305			return;
306			}
307			}
308
309			/* Move the image around */
310			x += delta_x;
311			if (x < 0)
312			{
313			x = 0;
314			delta_x = -delta_x;
315			}
316			else if ((x + w) > screen->w)
317			{
318			x = screen->w - w;
319			delta_x = -delta_x;
320			}
321			y += delta_y;
322			if (y < 0)
323			{
324			y = 0;
325			delta_y = -delta_y;
326			}
327			else if ((y + h) > screen->h)
328			{
329			y = screen->h - h;
330			delta_y = -delta_y;
331			}
332
333			/* Show the image on the screen */
334			SDL_GL_Enter2DMode ();
335			glBindTexture (GL_TEXTURE_2D, global_texture);
336			glBegin (GL_TRIANGLE_STRIP);
337			glTexCoord2f (texMinX, texMinY);
338			glVertex2i (x, y);
339			glTexCoord2f (texMaxX, texMinY);
340			glVertex2i (x + w, y);
341			glTexCoord2f (texMinX, texMaxY);
342			glVertex2i (x, y + h);
343			glTexCoord2f (texMaxX, texMaxY);
344			glVertex2i (x + w, y + h);
345			glEnd ();
346			SDL_GL_Leave2DMode ();
347			}
348
349			int
350			RunGLTest (int argc, char *argv[],
351			int logo, int slowly, int bpp, float gamma, int noframe, int fsaa)
352			{
353			int i;
354			int rgb_size[3];
355			int w = 640;
356			int h = 480;
357			int done = 0;
358			int frames;
359			Uint32 start_time, this_time;
360			int value;
361
362			if (SDL_Init (SDL_INIT_VIDEO) < 0)
363			{
364			fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ());
365			exit (1);
366			}
367
368			/* See if we should detect the display depth */
369			if (bpp == 0)
370			{
371			if (SDL_GetVideoInfo ()->vfmt->BitsPerPixel <= 8)
372			{
373			bpp = 8;
374			}
375			else
376			{
377			bpp = 16; /* More doesn't seem to work */
378			}
379			}
380
381			/* Set the flags we want to use for setting the video mode */
382			if (logo && USE_DEPRECATED_OPENGLBLIT)
383			{
384			video_flags = SDL_OPENGLBLIT;
385			}
386			else
387			{
388			video_flags = SDL_OPENGL;
389			}
390			for (i = 1; argv[i]; ++i)
391			{
392			if (strcmp (argv[1], "-fullscreen") == 0)
393			{
394			video_flags \|= SDL_FULLSCREEN;
395			}
396			}
397
398			if (noframe)
399			{
400			video_flags \|= SDL_NOFRAME;
401			}
402
403			/* Initialize the display */
404			switch (bpp)
405			{
406			case 8:
407			rgb_size[0] = 3;
408			rgb_size[1] = 3;
409			rgb_size[2] = 2;
410			break;
411			case 15:
412			case 16:
413			rgb_size[0] = 5;
414			rgb_size[1] = 5;
415			rgb_size[2] = 5;
416			break;
417			default:
418			rgb_size[0] = 8;
419			rgb_size[1] = 8;
420			rgb_size[2] = 8;
421			break;
422			}
423			SDL_GL_SetAttribute (SDL_GL_RED_SIZE, rgb_size[0]);
424			SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, rgb_size[1]);
425			SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, rgb_size[2]);
426			SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 16);
427			SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
428			if (fsaa)
429			{
430			SDL_GL_SetAttribute (SDL_GL_MULTISAMPLEBUFFERS, 1);
431			SDL_GL_SetAttribute (SDL_GL_MULTISAMPLESAMPLES, fsaa);
432			}
433			if (SDL_SetVideoMode (w, h, bpp, video_flags) == NULL)
434			{
435			fprintf (stderr, "Couldn't set GL mode: %s\n", SDL_GetError ());
436			SDL_Quit ();
437			exit (1);
438			}
439
440			printf ("Screen BPP: %d\n", SDL_GetVideoSurface ()->format->BitsPerPixel);
441			printf ("\n");
442			printf ("Vendor : %s\n", glGetString (GL_VENDOR));
443			printf ("Renderer : %s\n", glGetString (GL_RENDERER));
444			printf ("Version : %s\n", glGetString (GL_VERSION));
445			printf ("Extensions : %s\n", glGetString (GL_EXTENSIONS));
446			printf ("\n");
447
448			SDL_GL_GetAttribute (SDL_GL_RED_SIZE, &value);
449			printf ("SDL_GL_RED_SIZE: requested %d, got %d\n", rgb_size[0], value);
450			SDL_GL_GetAttribute (SDL_GL_GREEN_SIZE, &value);
451			printf ("SDL_GL_GREEN_SIZE: requested %d, got %d\n", rgb_size[1], value);
452			SDL_GL_GetAttribute (SDL_GL_BLUE_SIZE, &value);
453			printf ("SDL_GL_BLUE_SIZE: requested %d, got %d\n", rgb_size[2], value);
454			SDL_GL_GetAttribute (SDL_GL_DEPTH_SIZE, &value);
455			printf ("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", bpp, value);
456			SDL_GL_GetAttribute (SDL_GL_DOUBLEBUFFER, &value);
457			printf ("SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value);
458			if (fsaa)
459			{
460			SDL_GL_GetAttribute (SDL_GL_MULTISAMPLEBUFFERS, &value);
461			printf ("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
462			SDL_GL_GetAttribute (SDL_GL_MULTISAMPLESAMPLES, &value);
463			printf ("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
464			value);
465			}
466
467			/* Set the window manager title bar */
468			SDL_WM_SetCaption ("SDL GL test", "testgl");
469
470			/* Set the gamma for the window */
471			if (gamma != 0.0)
472			{
473			SDL_SetGamma (gamma, gamma, gamma);
474			}
475
476			glViewport (0, 0, w, h);
477			glMatrixMode (GL_PROJECTION);
478			glLoadIdentity ();
479
480			glOrtho (-2.0, 2.0, -2.0, 2.0, -20.0, 20.0);
481
482			glMatrixMode (GL_MODELVIEW);
483			glLoadIdentity ();
484
485			glEnable (GL_DEPTH_TEST);
486
487			glDepthFunc (GL_LESS);
488
489			glShadeModel (GL_SMOOTH);
490
491			/* Loop until done. */
492			start_time = SDL_GetTicks ();
493			frames = 0;
494			while (!done)
495			{
496			GLenum gl_error;
497			char *sdl_error;
498			SDL_Event event;
499
500			/* Do our drawing, too. */
501			glClearColor (0.0, 0.0, 0.0, 1.0);
502			glClear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
503
504			glBegin (GL_QUADS);
505
506			#ifdef SHADED_CUBE
507			glColor3fv (color[0]);
508			glVertex3fv (cube[0]);
509			glColor3fv (color[1]);
510			glVertex3fv (cube[1]);
511			glColor3fv (color[2]);
512			glVertex3fv (cube[2]);
513			glColor3fv (color[3]);
514			glVertex3fv (cube[3]);
515
516			glColor3fv (color[3]);
517			glVertex3fv (cube[3]);
518			glColor3fv (color[4]);
519			glVertex3fv (cube[4]);
520			glColor3fv (color[7]);
521			glVertex3fv (cube[7]);
522			glColor3fv (color[2]);
523			glVertex3fv (cube[2]);
524
525			glColor3fv (color[0]);
526			glVertex3fv (cube[0]);
527			glColor3fv (color[5]);
528			glVertex3fv (cube[5]);
529			glColor3fv (color[6]);
530			glVertex3fv (cube[6]);
531			glColor3fv (color[1]);
532			glVertex3fv (cube[1]);
533
534			glColor3fv (color[5]);
535			glVertex3fv (cube[5]);
536			glColor3fv (color[4]);
537			glVertex3fv (cube[4]);
538			glColor3fv (color[7]);
539			glVertex3fv (cube[7]);
540			glColor3fv (color[6]);
541			glVertex3fv (cube[6]);
542
543			glColor3fv (color[5]);
544			glVertex3fv (cube[5]);
545			glColor3fv (color[0]);
546			glVertex3fv (cube[0]);
547			glColor3fv (color[3]);
548			glVertex3fv (cube[3]);
549			glColor3fv (color[4]);
550			glVertex3fv (cube[4]);
551
552			glColor3fv (color[6]);
553			glVertex3fv (cube[6]);
554			glColor3fv (color[1]);
555			glVertex3fv (cube[1]);
556			glColor3fv (color[2]);
557			glVertex3fv (cube[2]);
558			glColor3fv (color[7]);
559			glVertex3fv (cube[7]);
560			#else // flat cube
561			glColor3f (1.0, 0.0, 0.0);
562			glVertex3fv (cube[0]);
563			glVertex3fv (cube[1]);
564			glVertex3fv (cube[2]);
565			glVertex3fv (cube[3]);
566
567			glColor3f (0.0, 1.0, 0.0);
568			glVertex3fv (cube[3]);
569			glVertex3fv (cube[4]);
570			glVertex3fv (cube[7]);
571			glVertex3fv (cube[2]);
572
573			glColor3f (0.0, 0.0, 1.0);
574			glVertex3fv (cube[0]);
575			glVertex3fv (cube[5]);
576			glVertex3fv (cube[6]);
577			glVertex3fv (cube[1]);
578
579			glColor3f (0.0, 1.0, 1.0);
580			glVertex3fv (cube[5]);
581			glVertex3fv (cube[4]);
582			glVertex3fv (cube[7]);
583			glVertex3fv (cube[6]);
584
585			glColor3f (1.0, 1.0, 0.0);
586			glVertex3fv (cube[5]);
587			glVertex3fv (cube[0]);
588			glVertex3fv (cube[3]);
589			glVertex3fv (cube[4]);
590
591			glColor3f (1.0, 0.0, 1.0);
592			glVertex3fv (cube[6]);
593			glVertex3fv (cube[1]);
594			glVertex3fv (cube[2]);
595			glVertex3fv (cube[7]);
596			#endif /* SHADED_CUBE */
597
598			glEnd ();
599
600			glMatrixMode (GL_MODELVIEW);
601			glRotatef (5.0, 1.0, 1.0, 1.0);
602
603			SDL_GL_SwapBuffers ();
604
605			/* Check for error conditions. */
606			gl_error = glGetError ();
607
608			if (gl_error != GL_NO_ERROR)
609			{
610			fprintf (stderr, "testgl: OpenGL error: %d\n", gl_error);
611			}
612
613			sdl_error = SDL_GetError ();
614
615			if (sdl_error[0] != '\0')
616			{
617			fprintf (stderr, "testgl: SDL error '%s'\n", sdl_error);
618			SDL_ClearError ();
619			}
620
621			/* Allow the user to see what's happening */
622			if (slowly)
623			{
624			SDL_Delay (20);
625			}
626			SDL_Delay (20);
627
628			/* Check if there's a pending event. */
629			while (SDL_PollEvent (&event))
630			{
631			done = HandleEvent (&event);
632			}
633			++frames;
634			}
635
636			/* Print out the frames per second */
637			this_time = SDL_GetTicks ();
638			if (this_time != start_time)
639			{
640			printf ("%2.2f FPS\n",
641			((float) frames / (this_time - start_time)) * 1000.0);
642			}
643
644			if (global_image)
645			{
646			SDL_FreeSurface (global_image);
647			global_image = NULL;
648			}
649			if (global_texture)
650			{
651			glDeleteTextures (1, &global_texture);
652			global_texture = 0;
653			}
654
655			/* Destroy our GL context, etc. */
656			SDL_Quit ();
657			return (0);
658			}
659
660			int
661			main (int argc, char *argv[])
662			{
663			int i, logo;
664			int numtests;
665			int bpp = 0;
666			int slowly;
667			float gamma = 0.0;
668			int noframe = 0;
669			int fsaa = 0;
670
671			logo = 0;
672			slowly = 0;
673			numtests = 1;
674			for (i = 1; argv[i]; ++i)
675			{
676			if (strcmp (argv[i], "-twice") == 0)
677			{
678			++numtests;
679			}
680			if (strcmp (argv[i], "-logo") == 0)
681			{
682			logo = 1;
683			USE_DEPRECATED_OPENGLBLIT = SDL_FALSE;
684			}
685			if (strcmp (argv[i], "-logoblit") == 0)
686			{
687			logo = 1;
688			USE_DEPRECATED_OPENGLBLIT = SDL_TRUE;
689			}
690			if (strcmp (argv[i], "-slow") == 0)
691			{
692			slowly = 1;
693			}
694			if (strcmp (argv[i], "-bpp") == 0)
695			{
696			bpp = atoi (argv[++i]);
697			}
698			if (strcmp (argv[i], "-gamma") == 0)
699			{
700			gamma = (float) atof (argv[++i]);
701			}
702			if (strcmp (argv[i], "-noframe") == 0)
703			{
704			noframe = 1;
705			}
706			if (strcmp (argv[i], "-fsaa") == 0)
707			{
708			++fsaa;
709			}
710			if (strncmp (argv[i], "-h", 2) == 0)
711			{
712			printf
713			("Usage: %s [-twice] [-logo] [-slow] [-bpp n] [-gamma n] [-noframe] [-fsaa]\n",
714			argv[0]);
715			exit (0);
716			}
717			}
718			for (i = 0; i < numtests; ++i)
719			{
720			RunGLTest (argc, argv, logo, slowly, bpp, gamma, noframe, fsaa);
721			}
722			return 0;
723			}