libgender/test.C

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

#include "SDL.h"
#include "SDL_opengl.h"

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

#include "util.h"
#include "entity.h"
#include "txtprt_import.h"

CGcontext cgc;
CGprogram vsh, fsh;
CGparameter mv, mvp, lightpos;

static void CheckCgError(void)
{
  CGerror err = cgGetError();

  if (err != CG_NO_ERROR)
   {
     printf("CG error: %s\n", cgGetErrorString(err));
     exit(1);
   }
}

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

view camera;
vec3 camera_velocity;
float camera_velocity_factor = 20;

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_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 (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);

  cgc = cgCreateContext ();
  vsh = cgCreateProgramFromFile (cgc, CG_SOURCE, "vsh.cg", CG_PROFILE_ARBVP1, 0, 0);
  CheckCgError ();
  cgGLLoadProgram (vsh);
  CheckCgError ();
  mv = cgGetNamedParameter (vsh, "WorldProj");
  mvp = cgGetNamedParameter (vsh, "WorldViewProj");
  lightpos = cgGetNamedParameter (vsh, "LightPos");
  CheckCgError ();

  fsh = cgCreateProgramFromFile (cgc, CG_SOURCE, "fsh.cg", CG_PROFILE_ARBFP1, 0, 0);
  CheckCgError ();
  cgGLLoadProgram (fsh);
  CheckCgError ();

  cgGLBindProgram (vsh);
  CheckCgError ();
  cgGLBindProgram (fsh);
  CheckCgError ();

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

  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;

      cgGLSetParameter4f (lightpos, camera.p.x, camera.p.y, camera.p.z, 1);

#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

      camera.begin ();
      camera.pass (view::DEPTH);
      camera.pass (view::LIGHTED);
      camera.end ();

      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:	1.34
Committed:	Wed Oct 6 01:41:30 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.33:	+4 -4 lines
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			#include "SDL_opengl.h"
8
9			static SDL_Surface *global_image = NULL;
10			static GLuint global_texture = 0;
11
12	root	1.29	#include "util.h"
13	root	1.2	#include "entity.h"
14	root	1.29	#include "txtprt_import.h"
15
16			CGcontext cgc;
17			CGprogram vsh, fsh;
18	root	1.30	CGparameter mv, mvp, lightpos;
19	root	1.29
20			static void CheckCgError(void)
21			{
22			CGerror err = cgGetError();
23	root	1.2
24	root	1.29	if (err != CG_NO_ERROR)
25			{
26			printf("CG error: %s\n", cgGetErrorString(err));
27			exit(1);
28			}
29			}
30	root	1.4
31	root	1.1	/**********************************************************************/
32
33	root	1.6	view camera;
34	root	1.18	vec3 camera_velocity;
35	root	1.32	float camera_velocity_factor = 20;
36	root	1.6
37	root	1.1	void
38			HotKey_ToggleFullScreen (void)
39			{
40			SDL_Surface *screen;
41
42			screen = SDL_GetVideoSurface ();
43			if (SDL_WM_ToggleFullScreen (screen))
44	root	1.5	printf ("Toggled fullscreen mode - now %s\n",
45			(screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed");
46	root	1.1	else
47	root	1.5	printf ("Unable to toggle fullscreen mode\n");
48	root	1.1	}
49
50			void
51			HotKey_ToggleGrab (void)
52			{
53			SDL_GrabMode mode;
54
55			printf ("Ctrl-G: toggling input grab!\n");
56			mode = SDL_WM_GrabInput (SDL_GRAB_QUERY);
57			if (mode == SDL_GRAB_ON)
58	root	1.5	printf ("Grab was on\n");
59	root	1.1	else
60	root	1.5	printf ("Grab was off\n");
61	root	1.1
62			mode = SDL_WM_GrabInput (mode ? SDL_GRAB_OFF : SDL_GRAB_ON);
63			if (mode == SDL_GRAB_ON)
64	root	1.5	printf ("Grab is now on\n");
65	root	1.1	else
66	root	1.5	printf ("Grab is now off\n");
67	root	1.1	}
68
69			void
70			HotKey_Iconify (void)
71			{
72			printf ("Ctrl-Z: iconifying window!\n");
73			SDL_WM_IconifyWindow ();
74			}
75
76			int
77			HandleEvent (SDL_Event * event)
78			{
79			int done;
80
81			done = 0;
82			switch (event->type)
83			{
84			case SDL_ACTIVEEVENT:
85			/* See what happened */
86			printf ("app %s ", event->active.gain ? "gained" : "lost");
87			if (event->active.state & SDL_APPACTIVE)
88			{
89			printf ("active ");
90			}
91			else if (event->active.state & SDL_APPMOUSEFOCUS)
92			{
93			printf ("mouse ");
94			}
95			else if (event->active.state & SDL_APPINPUTFOCUS)
96			{
97			printf ("input ");
98			}
99
100			printf ("focus\n");
101			break;
102
103			case SDL_KEYDOWN:
104	root	1.19	if (event->key.keysym.sym == SDLK_UP) camera_velocity.z--;
105			if (event->key.keysym.sym == SDLK_DOWN) camera_velocity.z++;
106			if (event->key.keysym.sym == SDLK_LEFT) camera_velocity.x--;
107			if (event->key.keysym.sym == SDLK_RIGHT) camera_velocity.x++;
108			if (event->key.keysym.sym == SDLK_a) camera_velocity.y--;
109			if (event->key.keysym.sym == SDLK_s) camera_velocity.y++;
110			if (event->key.keysym.sym == SDLK_v) camera_velocity_factor *= 1.5;
111			if (event->key.keysym.sym == SDLK_b) camera_velocity_factor /= 1.5;
112	root	1.6
113	root	1.1	if (event->key.keysym.sym == SDLK_ESCAPE)
114	root	1.6	done = 1;
115	root	1.1
116			if ((event->key.keysym.sym == SDLK_g) &&
117			(event->key.keysym.mod & KMOD_CTRL))
118	root	1.6	HotKey_ToggleGrab ();
119	root	1.1
120			if ((event->key.keysym.sym == SDLK_z) &&
121			(event->key.keysym.mod & KMOD_CTRL))
122	root	1.6	HotKey_Iconify ();
123	root	1.1
124			if ((event->key.keysym.sym == SDLK_RETURN) &&
125			(event->key.keysym.mod & KMOD_ALT))
126	root	1.6	HotKey_ToggleFullScreen ();
127	root	1.1
128			break;
129
130	root	1.18	case SDL_KEYUP:
131	root	1.19	if (event->key.keysym.sym == SDLK_UP) camera_velocity.z++;
132			if (event->key.keysym.sym == SDLK_DOWN) camera_velocity.z--;
133			if (event->key.keysym.sym == SDLK_LEFT) camera_velocity.x++;
134			if (event->key.keysym.sym == SDLK_RIGHT) camera_velocity.x--;
135			if (event->key.keysym.sym == SDLK_a) camera_velocity.y++;
136			if (event->key.keysym.sym == SDLK_s) camera_velocity.y--;
137	root	1.18	break;
138
139	root	1.1	case SDL_QUIT:
140			done = 1;
141			break;
142			}
143
144			return (done);
145			}
146
147			/* Quick utility function for texture creation */
148			static int
149			power_of_two (int input)
150			{
151			int value = 1;
152
153			while (value < input)
154			{
155			value <<= 1;
156			}
157			return value;
158			}
159
160			GLuint
161			SDL_GL_LoadTexture (SDL_Surface * surface, GLfloat * texcoord)
162			{
163			GLuint texture;
164			int w, h;
165			SDL_Surface *image;
166			SDL_Rect area;
167			Uint32 saved_flags;
168			Uint8 saved_alpha;
169
170			/* Use the surface width and height expanded to powers of 2 */
171			w = power_of_two (surface->w);
172			h = power_of_two (surface->h);
173			texcoord[0] = 0.0f; /* Min X */
174			texcoord[1] = 0.0f; /* Min Y */
175			texcoord[2] = (GLfloat) surface->w / w; /* Max X */
176			texcoord[3] = (GLfloat) surface->h / h; /* Max Y */
177
178			image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32,
179			#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
180			0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
181			#else
182			0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
183			#endif
184			);
185			if (image == NULL)
186			{
187			return 0;
188			}
189
190			/* Save the alpha blending attributes */
191			saved_flags = surface->flags & (SDL_SRCALPHA \| SDL_RLEACCELOK);
192			saved_alpha = surface->format->alpha;
193			if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
194			{
195			SDL_SetAlpha (surface, 0, 0);
196			}
197
198			/* Copy the surface into the GL texture image */
199			area.x = 0;
200			area.y = 0;
201			area.w = surface->w;
202			area.h = surface->h;
203			SDL_BlitSurface (surface, &area, image, &area);
204
205			/* Restore the alpha blending attributes */
206			if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
207			{
208			SDL_SetAlpha (surface, saved_flags, saved_alpha);
209			}
210
211			/* Create an OpenGL texture for the image */
212			glGenTextures (1, &texture);
213			glBindTexture (GL_TEXTURE_2D, texture);
214			glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
215			glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
216			glTexImage2D (GL_TEXTURE_2D,
217			0,
218			GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
219			SDL_FreeSurface (image); /* No longer needed */
220
221			return texture;
222			}
223
224			int
225			RunGLTest (int argc, char *argv[],
226			int logo, int slowly, int bpp, float gamma, int noframe, int fsaa)
227			{
228			int i;
229			int rgb_size[3];
230			int w = 640;
231			int h = 480;
232			int done = 0;
233			int frames;
234			Uint32 start_time, this_time;
235	root	1.2	Uint32 video_flags;
236	root	1.1	int value;
237
238			if (SDL_Init (SDL_INIT_VIDEO) < 0)
239			{
240			fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ());
241			exit (1);
242			}
243
244			/* See if we should detect the display depth */
245			if (bpp == 0)
246			{
247			if (SDL_GetVideoInfo ()->vfmt->BitsPerPixel <= 8)
248	root	1.3	bpp = 8;
249	root	1.1	else
250	root	1.3	bpp = 16; /* More doesn't seem to work */
251	root	1.1	}
252
253	root	1.2	video_flags = SDL_OPENGL;
254
255	root	1.1	for (i = 1; argv[i]; ++i)
256	root	1.3	if (strcmp (argv[1], "-fullscreen") == 0)
257			video_flags \|= SDL_FULLSCREEN;
258	root	1.1
259			if (noframe)
260	root	1.3	video_flags \|= SDL_NOFRAME;
261	root	1.1
262			/* Initialize the display */
263			switch (bpp)
264			{
265			case 8:
266			rgb_size[0] = 3;
267			rgb_size[1] = 3;
268			rgb_size[2] = 2;
269			break;
270	root	1.3
271	root	1.1	case 15:
272			case 16:
273			rgb_size[0] = 5;
274			rgb_size[1] = 5;
275			rgb_size[2] = 5;
276			break;
277	root	1.3
278	root	1.1	default:
279			rgb_size[0] = 8;
280			rgb_size[1] = 8;
281			rgb_size[2] = 8;
282			break;
283			}
284	root	1.18
285	root	1.1	SDL_GL_SetAttribute (SDL_GL_RED_SIZE, rgb_size[0]);
286			SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, rgb_size[1]);
287			SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, rgb_size[2]);
288			SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 16);
289			SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
290	root	1.3
291	root	1.1	if (fsaa)
292			{
293			SDL_GL_SetAttribute (SDL_GL_MULTISAMPLEBUFFERS, 1);
294			SDL_GL_SetAttribute (SDL_GL_MULTISAMPLESAMPLES, fsaa);
295			}
296	root	1.3
297	root	1.1	if (SDL_SetVideoMode (w, h, bpp, video_flags) == NULL)
298			{
299			fprintf (stderr, "Couldn't set GL mode: %s\n", SDL_GetError ());
300			SDL_Quit ();
301			exit (1);
302			}
303
304			printf ("Screen BPP: %d\n", SDL_GetVideoSurface ()->format->BitsPerPixel);
305			printf ("\n");
306			printf ("Vendor : %s\n", glGetString (GL_VENDOR));
307			printf ("Renderer : %s\n", glGetString (GL_RENDERER));
308			printf ("Version : %s\n", glGetString (GL_VERSION));
309			printf ("Extensions : %s\n", glGetString (GL_EXTENSIONS));
310			printf ("\n");
311
312			SDL_GL_GetAttribute (SDL_GL_RED_SIZE, &value);
313			printf ("SDL_GL_RED_SIZE: requested %d, got %d\n", rgb_size[0], value);
314			SDL_GL_GetAttribute (SDL_GL_GREEN_SIZE, &value);
315			printf ("SDL_GL_GREEN_SIZE: requested %d, got %d\n", rgb_size[1], value);
316			SDL_GL_GetAttribute (SDL_GL_BLUE_SIZE, &value);
317			printf ("SDL_GL_BLUE_SIZE: requested %d, got %d\n", rgb_size[2], value);
318			SDL_GL_GetAttribute (SDL_GL_DEPTH_SIZE, &value);
319			printf ("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", bpp, value);
320			SDL_GL_GetAttribute (SDL_GL_DOUBLEBUFFER, &value);
321			printf ("SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value);
322	root	1.3
323	root	1.1	if (fsaa)
324			{
325			SDL_GL_GetAttribute (SDL_GL_MULTISAMPLEBUFFERS, &value);
326			printf ("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
327			SDL_GL_GetAttribute (SDL_GL_MULTISAMPLESAMPLES, &value);
328			printf ("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
329			value);
330			}
331
332			/* Set the window manager title bar */
333	root	1.12	SDL_WM_SetCaption ("libgender rendering test", "gendertest");
334	root	1.1
335			/* Set the gamma for the window */
336			if (gamma != 0.0)
337	root	1.3	SDL_SetGamma (gamma, gamma, gamma);
338	root	1.1
339	root	1.17	// load a entity
340			for (int i = 0; i < 7; i++)
341			{
342			txtprt_parser p;
343	root	1.18	entity_transform *f = new entity_transform;
344	root	1.17	entity *e;
345			try
346			{
347			e = p.read ("test.blasc");
348			} catch (txtprt_i_exception & e)
349			{
350			cout << "ERR: " << e.msg << endl;
351			}
352			f->set (e);
353	root	1.26	f->update (matrix::translation (vec3 (0, -1, -i*5)));
354	root	1.17	f->show ();
355			}
356
357	root	1.13	camera.orig.x = camera.orig.y = camera.orig.z = 0;
358	root	1.6	camera.p = point (0, 0, 10);
359			camera.d = vec3 (0, 0, -1);
360			camera.u = vec3 (0, 1, 0);
361			camera.w = w; camera.h = h;
362			camera.fov = 90;
363	root	1.1
364			glMatrixMode (GL_MODELVIEW);
365			glLoadIdentity ();
366
367	root	1.16	glEnable (GL_CULL_FACE);
368	root	1.1	glEnable (GL_DEPTH_TEST);
369	root	1.22
370	root	1.11	glShadeModel (GL_SMOOTH);
371	root	1.6
372	root	1.3	glEnable (GL_LIGHTING);
373	root	1.9	//GLfloat lightc[4] = { 1, 0.1, 0.1, 1 };
374	root	1.6	//glLightf (GL_LIGHT0, GL_QUADRATIC_ATTENUATION);
375	root	1.9	//glLightfv (GL_LIGHT0, GL_DIFFUSE, lightc);
376	root	1.6	glEnable (GL_LIGHT0);
377	root	1.29
378			cgc = cgCreateContext ();
379			vsh = cgCreateProgramFromFile (cgc, CG_SOURCE, "vsh.cg", CG_PROFILE_ARBVP1, 0, 0);
380			CheckCgError ();
381			cgGLLoadProgram (vsh);
382			CheckCgError ();
383			mv = cgGetNamedParameter (vsh, "WorldProj");
384			mvp = cgGetNamedParameter (vsh, "WorldViewProj");
385	root	1.30	lightpos = cgGetNamedParameter (vsh, "LightPos");
386	root	1.29	CheckCgError ();
387
388			fsh = cgCreateProgramFromFile (cgc, CG_SOURCE, "fsh.cg", CG_PROFILE_ARBFP1, 0, 0);
389	root	1.30	CheckCgError ();
390	root	1.29	cgGLLoadProgram (fsh);
391	root	1.30	CheckCgError ();
392	root	1.29
393			cgGLBindProgram (vsh);
394	root	1.30	CheckCgError ();
395	root	1.29	cgGLBindProgram (fsh);
396	root	1.30	CheckCgError ();
397	root	1.1
398			/* Loop until done. */
399			start_time = SDL_GetTicks ();
400			frames = 0;
401	root	1.16
402	root	1.1	while (!done)
403			{
404			GLenum gl_error;
405			char *sdl_error;
406			SDL_Event event;
407
408			glClear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
409
410	root	1.19	camera.p.x += (camera_velocity_factor * camera_velocity.x) * timer.diff;
411			camera.p.y += (camera_velocity_factor * camera_velocity.y) * timer.diff;
412			camera.p.z += (camera_velocity_factor * camera_velocity.z) * timer.diff;
413	root	1.18
414	root	1.30	cgGLSetParameter4f (lightpos, camera.p.x, camera.p.y, camera.p.z, 1);
415	root	1.6
416	root	1.5	#if 0
417	root	1.3	static GLfloat ry;
418	root	1.13	ry += 0.001;
419			camera.d.x = cos (ry);
420			camera.d.z = sin (ry);
421			//camera.d.y = sin (ry * 0.1);
422	root	1.5	#endif
423	root	1.1
424	root	1.34	camera.begin ();
425			camera.pass (view::DEPTH);
426			camera.pass (view::LIGHTED);
427			camera.end ();
428	root	1.1
429			SDL_GL_SwapBuffers ();
430	root	1.15	timer.frame ();
431	root	1.1
432			/* Check for error conditions. */
433			gl_error = glGetError ();
434
435			if (gl_error != GL_NO_ERROR)
436	root	1.3	fprintf (stderr, "testgl: OpenGL error: %d\n", gl_error);
437	root	1.1
438			sdl_error = SDL_GetError ();
439
440			if (sdl_error[0] != '\0')
441			{
442			fprintf (stderr, "testgl: SDL error '%s'\n", sdl_error);
443			SDL_ClearError ();
444			}
445
446			/* Allow the user to see what's happening */
447	root	1.9	//SDL_Delay (20);
448	root	1.1
449			/* Check if there's a pending event. */
450			while (SDL_PollEvent (&event))
451	root	1.18	done = HandleEvent (&event);
452	root	1.20
453	root	1.18
454	root	1.1	++frames;
455			}
456
457			/* Print out the frames per second */
458			this_time = SDL_GetTicks ();
459			if (this_time != start_time)
460			{
461			printf ("%2.2f FPS\n",
462			((float) frames / (this_time - start_time)) * 1000.0);
463			}
464
465			if (global_image)
466			{
467			SDL_FreeSurface (global_image);
468			global_image = NULL;
469			}
470			if (global_texture)
471			{
472			glDeleteTextures (1, &global_texture);
473			global_texture = 0;
474			}
475
476			/* Destroy our GL context, etc. */
477			SDL_Quit ();
478			return (0);
479			}
480
481			int
482			main (int argc, char *argv[])
483			{
484			int i, logo;
485			int numtests;
486			int bpp = 0;
487			int slowly;
488			float gamma = 0.0;
489			int noframe = 0;
490			int fsaa = 0;
491	root	1.4
492	root	1.1	logo = 0;
493			slowly = 0;
494			numtests = 1;
495			for (i = 1; argv[i]; ++i)
496			{
497			if (strcmp (argv[i], "-twice") == 0)
498			{
499			++numtests;
500			}
501			if (strcmp (argv[i], "-slow") == 0)
502			{
503			slowly = 1;
504			}
505			if (strcmp (argv[i], "-bpp") == 0)
506			{
507			bpp = atoi (argv[++i]);
508			}
509			if (strcmp (argv[i], "-gamma") == 0)
510			{
511			gamma = (float) atof (argv[++i]);
512			}
513			if (strcmp (argv[i], "-noframe") == 0)
514			{
515			noframe = 1;
516			}
517			if (strcmp (argv[i], "-fsaa") == 0)
518			{
519			++fsaa;
520			}
521			if (strncmp (argv[i], "-h", 2) == 0)
522			{
523			printf
524			("Usage: %s [-twice] [-logo] [-slow] [-bpp n] [-gamma n] [-noframe] [-fsaa]\n",
525			argv[0]);
526			exit (0);
527			}
528			}
529	root	1.17
530	root	1.1	for (i = 0; i < numtests; ++i)
531	root	1.17	RunGLTest (argc, argv, logo, slowly, bpp, gamma, noframe, fsaa);
532
533	root	1.1	return 0;
534			}