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"

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

#include "entity.h"

#include "txtprt_import.h"

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

view camera;
vec3 camera_velocity;
float  camera_velocity_factor = 10;

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;

#define VELOCITY 10
    case SDL_KEYDOWN:
      if (event->key.keysym.sym == SDLK_UP)    camera_velocity.z--;
      if (event->key.keysym.sym == SDLK_DOWN)  camera_velocity.z++;
      if (event->key.keysym.sym == SDLK_LEFT)  camera_velocity.x--;
      if (event->key.keysym.sym == SDLK_RIGHT) camera_velocity.x++;
      if (event->key.keysym.sym == SDLK_a)     camera_velocity.y--;
      if (event->key.keysym.sym == SDLK_s)     camera_velocity.y++;
      if (event->key.keysym.sym == SDLK_v)     camera_velocity_factor *= 1.5;
      if (event->key.keysym.sym == SDLK_b)     camera_velocity_factor /= 1.5;

      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 ();

      break;

    case SDL_KEYUP:
      if (event->key.keysym.sym == SDLK_UP)    camera_velocity.z++;
      if (event->key.keysym.sym == SDLK_DOWN)  camera_velocity.z--;
      if (event->key.keysym.sym == SDLK_LEFT)  camera_velocity.x++;
      if (event->key.keysym.sym == SDLK_RIGHT) camera_velocity.x--;
      if (event->key.keysym.sym == SDLK_a)     camera_velocity.y++;
      if (event->key.keysym.sym == SDLK_s)     camera_velocity.y--;
      break;

    case SDL_QUIT:
      done = 1;
      break;
    }

  return (done);
}

/* 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;
}

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;
  Uint32 video_flags;
  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 */
    }

  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 ("libgender rendering test", "gendertest");

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

  // load a entity
  for (int i = 0; i < 7; i++)
    {
      txtprt_parser p;
      entity_transform *f = new entity_transform;
      entity *e;
      try
      {
        e = p.read ("test.blasc");
      } catch (txtprt_i_exception & e)
      {
        cout << "ERR: " << e.msg << endl;
      }
      f->set (e);
      f->update (gl_matrix::translation (vec3 (0, -1, -i*5)));
      f->show ();
    }

  camera.orig.x = camera.orig.y = camera.orig.z = 0;
  camera.p = point (0, 0, 10);
  camera.d = vec3 (0, 0, -1);
  camera.u = vec3 (0, 1, 0);
  camera.w = w; camera.h = h;
  camera.fov = 90;

  glMatrixMode (GL_MODELVIEW);
  glLoadIdentity ();

  glEnable (GL_CULL_FACE);
  glEnable (GL_DEPTH_TEST);
  glShadeModel (GL_SMOOTH);

  glEnable (GL_LIGHTING);
  //GLfloat lightc[4] = { 1, 0.1, 0.1, 1 };
  //glLightf (GL_LIGHT0, GL_QUADRATIC_ATTENUATION);
  //glLightfv (GL_LIGHT0, GL_DIFFUSE, lightc);
  glEnable (GL_LIGHT0);

  /* Loop until done. */
  start_time = SDL_GetTicks ();
  frames = 0;

  draw_context c (camera);

  while (!done)
    {
      GLenum gl_error;
      char *sdl_error;
      SDL_Event event;

      glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

      camera.p.x += (camera_velocity_factor * camera_velocity.x) * timer.diff;
      camera.p.y += (camera_velocity_factor * camera_velocity.y) * timer.diff;
      camera.p.z += (camera_velocity_factor * camera_velocity.z) * timer.diff;

      GLfloat lightp[4];
      lightp[0] = camera.p.x;
      lightp[1] = camera.p.y;
      lightp[2] = camera.p.z;
      lightp[3] = 1;
      glLightfv (GL_LIGHT0, GL_POSITION, lightp);

#if 0
      static GLfloat ry;
      ry += 0.001;
      camera.d.x = cos (ry);
      camera.d.z = sin (ry);
      //camera.d.y = sin (ry * 0.1);
#endif

      c.mode = draw_context::DEPTH;  
      camera.draw (c);
      c.mode = draw_context::LIGHTED;
      camera.draw (c);

      SDL_GL_SwapBuffers ();
      timer.frame ();

      /* 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 */
      //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], "-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:	1.21
Committed:	Mon Oct 4 23:44:53 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.20:	+1 -1 lines
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	static SDL_Surface *global_image = NULL;
17	static GLuint global_texture = 0;
18
19	#include "entity.h"
20
21	#include "txtprt_import.h"
22
23	/**********************************************************************/
24
25	view camera;
26	vec3 camera_velocity;
27	float camera_velocity_factor = 10;
28
29	void
30	HotKey_ToggleFullScreen (void)
31	{
32	SDL_Surface *screen;
33
34	screen = SDL_GetVideoSurface ();
35	if (SDL_WM_ToggleFullScreen (screen))
36	printf ("Toggled fullscreen mode - now %s\n",
37	(screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed");
38	else
39	printf ("Unable to toggle fullscreen mode\n");
40	}
41
42	void
43	HotKey_ToggleGrab (void)
44	{
45	SDL_GrabMode mode;
46
47	printf ("Ctrl-G: toggling input grab!\n");
48	mode = SDL_WM_GrabInput (SDL_GRAB_QUERY);
49	if (mode == SDL_GRAB_ON)
50	printf ("Grab was on\n");
51	else
52	printf ("Grab was off\n");
53
54	mode = SDL_WM_GrabInput (mode ? SDL_GRAB_OFF : SDL_GRAB_ON);
55	if (mode == SDL_GRAB_ON)
56	printf ("Grab is now on\n");
57	else
58	printf ("Grab is now off\n");
59	}
60
61	void
62	HotKey_Iconify (void)
63	{
64	printf ("Ctrl-Z: iconifying window!\n");
65	SDL_WM_IconifyWindow ();
66	}
67
68	int
69	HandleEvent (SDL_Event * event)
70	{
71	int done;
72
73	done = 0;
74	switch (event->type)
75	{
76	case SDL_ACTIVEEVENT:
77	/* See what happened */
78	printf ("app %s ", event->active.gain ? "gained" : "lost");
79	if (event->active.state & SDL_APPACTIVE)
80	{
81	printf ("active ");
82	}
83	else if (event->active.state & SDL_APPMOUSEFOCUS)
84	{
85	printf ("mouse ");
86	}
87	else if (event->active.state & SDL_APPINPUTFOCUS)
88	{
89	printf ("input ");
90	}
91
92	printf ("focus\n");
93	break;
94
95	#define VELOCITY 10
96	case SDL_KEYDOWN:
97	if (event->key.keysym.sym == SDLK_UP) camera_velocity.z--;
98	if (event->key.keysym.sym == SDLK_DOWN) camera_velocity.z++;
99	if (event->key.keysym.sym == SDLK_LEFT) camera_velocity.x--;
100	if (event->key.keysym.sym == SDLK_RIGHT) camera_velocity.x++;
101	if (event->key.keysym.sym == SDLK_a) camera_velocity.y--;
102	if (event->key.keysym.sym == SDLK_s) camera_velocity.y++;
103	if (event->key.keysym.sym == SDLK_v) camera_velocity_factor *= 1.5;
104	if (event->key.keysym.sym == SDLK_b) camera_velocity_factor /= 1.5;
105
106	if (event->key.keysym.sym == SDLK_ESCAPE)
107	done = 1;
108
109	if ((event->key.keysym.sym == SDLK_g) &&
110	(event->key.keysym.mod & KMOD_CTRL))
111	HotKey_ToggleGrab ();
112
113	if ((event->key.keysym.sym == SDLK_z) &&
114	(event->key.keysym.mod & KMOD_CTRL))
115	HotKey_Iconify ();
116
117	if ((event->key.keysym.sym == SDLK_RETURN) &&
118	(event->key.keysym.mod & KMOD_ALT))
119	HotKey_ToggleFullScreen ();
120
121	break;
122
123	case SDL_KEYUP:
124	if (event->key.keysym.sym == SDLK_UP) camera_velocity.z++;
125	if (event->key.keysym.sym == SDLK_DOWN) camera_velocity.z--;
126	if (event->key.keysym.sym == SDLK_LEFT) camera_velocity.x++;
127	if (event->key.keysym.sym == SDLK_RIGHT) camera_velocity.x--;
128	if (event->key.keysym.sym == SDLK_a) camera_velocity.y++;
129	if (event->key.keysym.sym == SDLK_s) camera_velocity.y--;
130	break;
131
132	case SDL_QUIT:
133	done = 1;
134	break;
135	}
136
137	return (done);
138	}
139
140	/* Quick utility function for texture creation */
141	static int
142	power_of_two (int input)
143	{
144	int value = 1;
145
146	while (value < input)
147	{
148	value <<= 1;
149	}
150	return value;
151	}
152
153	GLuint
154	SDL_GL_LoadTexture (SDL_Surface * surface, GLfloat * texcoord)
155	{
156	GLuint texture;
157	int w, h;
158	SDL_Surface *image;
159	SDL_Rect area;
160	Uint32 saved_flags;
161	Uint8 saved_alpha;
162
163	/* Use the surface width and height expanded to powers of 2 */
164	w = power_of_two (surface->w);
165	h = power_of_two (surface->h);
166	texcoord[0] = 0.0f; /* Min X */
167	texcoord[1] = 0.0f; /* Min Y */
168	texcoord[2] = (GLfloat) surface->w / w; /* Max X */
169	texcoord[3] = (GLfloat) surface->h / h; /* Max Y */
170
171	image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32,
172	#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
173	0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
174	#else
175	0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
176	#endif
177	);
178	if (image == NULL)
179	{
180	return 0;
181	}
182
183	/* Save the alpha blending attributes */
184	saved_flags = surface->flags & (SDL_SRCALPHA \| SDL_RLEACCELOK);
185	saved_alpha = surface->format->alpha;
186	if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
187	{
188	SDL_SetAlpha (surface, 0, 0);
189	}
190
191	/* Copy the surface into the GL texture image */
192	area.x = 0;
193	area.y = 0;
194	area.w = surface->w;
195	area.h = surface->h;
196	SDL_BlitSurface (surface, &area, image, &area);
197
198	/* Restore the alpha blending attributes */
199	if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
200	{
201	SDL_SetAlpha (surface, saved_flags, saved_alpha);
202	}
203
204	/* Create an OpenGL texture for the image */
205	glGenTextures (1, &texture);
206	glBindTexture (GL_TEXTURE_2D, texture);
207	glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
208	glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
209	glTexImage2D (GL_TEXTURE_2D,
210	0,
211	GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
212	SDL_FreeSurface (image); /* No longer needed */
213
214	return texture;
215	}
216
217	int
218	RunGLTest (int argc, char *argv[],
219	int logo, int slowly, int bpp, float gamma, int noframe, int fsaa)
220	{
221	int i;
222	int rgb_size[3];
223	int w = 640;
224	int h = 480;
225	int done = 0;
226	int frames;
227	Uint32 start_time, this_time;
228	Uint32 video_flags;
229	int value;
230
231	if (SDL_Init (SDL_INIT_VIDEO) < 0)
232	{
233	fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ());
234	exit (1);
235	}
236
237	/* See if we should detect the display depth */
238	if (bpp == 0)
239	{
240	if (SDL_GetVideoInfo ()->vfmt->BitsPerPixel <= 8)
241	bpp = 8;
242	else
243	bpp = 16; /* More doesn't seem to work */
244	}
245
246	video_flags = SDL_OPENGL;
247
248	for (i = 1; argv[i]; ++i)
249	if (strcmp (argv[1], "-fullscreen") == 0)
250	video_flags \|= SDL_FULLSCREEN;
251
252	if (noframe)
253	video_flags \|= SDL_NOFRAME;
254
255	/* Initialize the display */
256	switch (bpp)
257	{
258	case 8:
259	rgb_size[0] = 3;
260	rgb_size[1] = 3;
261	rgb_size[2] = 2;
262	break;
263
264	case 15:
265	case 16:
266	rgb_size[0] = 5;
267	rgb_size[1] = 5;
268	rgb_size[2] = 5;
269	break;
270
271	default:
272	rgb_size[0] = 8;
273	rgb_size[1] = 8;
274	rgb_size[2] = 8;
275	break;
276	}
277
278	SDL_GL_SetAttribute (SDL_GL_RED_SIZE, rgb_size[0]);
279	SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, rgb_size[1]);
280	SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, rgb_size[2]);
281	SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 16);
282	SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
283
284	if (fsaa)
285	{
286	SDL_GL_SetAttribute (SDL_GL_MULTISAMPLEBUFFERS, 1);
287	SDL_GL_SetAttribute (SDL_GL_MULTISAMPLESAMPLES, fsaa);
288	}
289
290	if (SDL_SetVideoMode (w, h, bpp, video_flags) == NULL)
291	{
292	fprintf (stderr, "Couldn't set GL mode: %s\n", SDL_GetError ());
293	SDL_Quit ();
294	exit (1);
295	}
296
297	printf ("Screen BPP: %d\n", SDL_GetVideoSurface ()->format->BitsPerPixel);
298	printf ("\n");
299	printf ("Vendor : %s\n", glGetString (GL_VENDOR));
300	printf ("Renderer : %s\n", glGetString (GL_RENDERER));
301	printf ("Version : %s\n", glGetString (GL_VERSION));
302	printf ("Extensions : %s\n", glGetString (GL_EXTENSIONS));
303	printf ("\n");
304
305	SDL_GL_GetAttribute (SDL_GL_RED_SIZE, &value);
306	printf ("SDL_GL_RED_SIZE: requested %d, got %d\n", rgb_size[0], value);
307	SDL_GL_GetAttribute (SDL_GL_GREEN_SIZE, &value);
308	printf ("SDL_GL_GREEN_SIZE: requested %d, got %d\n", rgb_size[1], value);
309	SDL_GL_GetAttribute (SDL_GL_BLUE_SIZE, &value);
310	printf ("SDL_GL_BLUE_SIZE: requested %d, got %d\n", rgb_size[2], value);
311	SDL_GL_GetAttribute (SDL_GL_DEPTH_SIZE, &value);
312	printf ("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", bpp, value);
313	SDL_GL_GetAttribute (SDL_GL_DOUBLEBUFFER, &value);
314	printf ("SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value);
315
316	if (fsaa)
317	{
318	SDL_GL_GetAttribute (SDL_GL_MULTISAMPLEBUFFERS, &value);
319	printf ("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
320	SDL_GL_GetAttribute (SDL_GL_MULTISAMPLESAMPLES, &value);
321	printf ("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
322	value);
323	}
324
325	/* Set the window manager title bar */
326	SDL_WM_SetCaption ("libgender rendering test", "gendertest");
327
328	/* Set the gamma for the window */
329	if (gamma != 0.0)
330	SDL_SetGamma (gamma, gamma, gamma);
331
332	// load a entity
333	for (int i = 0; i < 7; i++)
334	{
335	txtprt_parser p;
336	entity_transform *f = new entity_transform;
337	entity *e;
338	try
339	{
340	e = p.read ("test.blasc");
341	} catch (txtprt_i_exception & e)
342	{
343	cout << "ERR: " << e.msg << endl;
344	}
345	f->set (e);
346	f->update (gl_matrix::translation (vec3 (0, -1, -i*5)));
347	f->show ();
348	}
349
350	camera.orig.x = camera.orig.y = camera.orig.z = 0;
351	camera.p = point (0, 0, 10);
352	camera.d = vec3 (0, 0, -1);
353	camera.u = vec3 (0, 1, 0);
354	camera.w = w; camera.h = h;
355	camera.fov = 90;
356
357	glMatrixMode (GL_MODELVIEW);
358	glLoadIdentity ();
359
360	glEnable (GL_CULL_FACE);
361	glEnable (GL_DEPTH_TEST);
362	glShadeModel (GL_SMOOTH);
363
364	glEnable (GL_LIGHTING);
365	//GLfloat lightc[4] = { 1, 0.1, 0.1, 1 };
366	//glLightf (GL_LIGHT0, GL_QUADRATIC_ATTENUATION);
367	//glLightfv (GL_LIGHT0, GL_DIFFUSE, lightc);
368	glEnable (GL_LIGHT0);
369
370	/* Loop until done. */
371	start_time = SDL_GetTicks ();
372	frames = 0;
373
374	draw_context c (camera);
375
376	while (!done)
377	{
378	GLenum gl_error;
379	char *sdl_error;
380	SDL_Event event;
381
382	glClear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
383
384	camera.p.x += (camera_velocity_factor * camera_velocity.x) * timer.diff;
385	camera.p.y += (camera_velocity_factor * camera_velocity.y) * timer.diff;
386	camera.p.z += (camera_velocity_factor * camera_velocity.z) * timer.diff;
387
388	GLfloat lightp[4];
389	lightp[0] = camera.p.x;
390	lightp[1] = camera.p.y;
391	lightp[2] = camera.p.z;
392	lightp[3] = 1;
393	glLightfv (GL_LIGHT0, GL_POSITION, lightp);
394
395	#if 0
396	static GLfloat ry;
397	ry += 0.001;
398	camera.d.x = cos (ry);
399	camera.d.z = sin (ry);
400	//camera.d.y = sin (ry * 0.1);
401	#endif
402
403	c.mode = draw_context::DEPTH;
404	camera.draw (c);
405	c.mode = draw_context::LIGHTED;
406	camera.draw (c);
407
408	SDL_GL_SwapBuffers ();
409	timer.frame ();
410
411	/* Check for error conditions. */
412	gl_error = glGetError ();
413
414	if (gl_error != GL_NO_ERROR)
415	fprintf (stderr, "testgl: OpenGL error: %d\n", gl_error);
416
417	sdl_error = SDL_GetError ();
418
419	if (sdl_error[0] != '\0')
420	{
421	fprintf (stderr, "testgl: SDL error '%s'\n", sdl_error);
422	SDL_ClearError ();
423	}
424
425	/* Allow the user to see what's happening */
426	//SDL_Delay (20);
427
428	/* Check if there's a pending event. */
429	while (SDL_PollEvent (&event))
430	done = HandleEvent (&event);
431
432
433	++frames;
434	}
435
436	/* Print out the frames per second */
437	this_time = SDL_GetTicks ();
438	if (this_time != start_time)
439	{
440	printf ("%2.2f FPS\n",
441	((float) frames / (this_time - start_time)) * 1000.0);
442	}
443
444	if (global_image)
445	{
446	SDL_FreeSurface (global_image);
447	global_image = NULL;
448	}
449	if (global_texture)
450	{
451	glDeleteTextures (1, &global_texture);
452	global_texture = 0;
453	}
454
455	/* Destroy our GL context, etc. */
456	SDL_Quit ();
457	return (0);
458	}
459
460	int
461	main (int argc, char *argv[])
462	{
463	int i, logo;
464	int numtests;
465	int bpp = 0;
466	int slowly;
467	float gamma = 0.0;
468	int noframe = 0;
469	int fsaa = 0;
470
471	logo = 0;
472	slowly = 0;
473	numtests = 1;
474	for (i = 1; argv[i]; ++i)
475	{
476	if (strcmp (argv[i], "-twice") == 0)
477	{
478	++numtests;
479	}
480	if (strcmp (argv[i], "-slow") == 0)
481	{
482	slowly = 1;
483	}
484	if (strcmp (argv[i], "-bpp") == 0)
485	{
486	bpp = atoi (argv[++i]);
487	}
488	if (strcmp (argv[i], "-gamma") == 0)
489	{
490	gamma = (float) atof (argv[++i]);
491	}
492	if (strcmp (argv[i], "-noframe") == 0)
493	{
494	noframe = 1;
495	}
496	if (strcmp (argv[i], "-fsaa") == 0)
497	{
498	++fsaa;
499	}
500	if (strncmp (argv[i], "-h", 2) == 0)
501	{
502	printf
503	("Usage: %s [-twice] [-logo] [-slow] [-bpp n] [-gamma n] [-noframe] [-fsaa]\n",
504	argv[0]);
505	exit (0);
506	}
507	}
508
509	for (i = 0; i < numtests; ++i)
510	RunGLTest (argc, argv, logo, slowly, bpp, gamma, noframe, fsaa);
511
512	return 0;
513	}