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 (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Log Message:	* empty log message *
#	Content
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	}