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 = 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 (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;

  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;

      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

      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:	1.31
Committed:	Tue Oct 5 08:28:39 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.30:	+0 -6 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	1.24	float camera_velocity_factor = 10;
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	root	1.18	#define VELOCITY 10
104	root	1.1	case SDL_KEYDOWN:
105	root	1.19	if (event->key.keysym.sym == SDLK_UP) camera_velocity.z--;
106			if (event->key.keysym.sym == SDLK_DOWN) camera_velocity.z++;
107			if (event->key.keysym.sym == SDLK_LEFT) camera_velocity.x--;
108			if (event->key.keysym.sym == SDLK_RIGHT) camera_velocity.x++;
109			if (event->key.keysym.sym == SDLK_a) camera_velocity.y--;
110			if (event->key.keysym.sym == SDLK_s) camera_velocity.y++;
111			if (event->key.keysym.sym == SDLK_v) camera_velocity_factor *= 1.5;
112			if (event->key.keysym.sym == SDLK_b) camera_velocity_factor /= 1.5;
113	root	1.6
114	root	1.1	if (event->key.keysym.sym == SDLK_ESCAPE)
115	root	1.6	done = 1;
116	root	1.1
117			if ((event->key.keysym.sym == SDLK_g) &&
118			(event->key.keysym.mod & KMOD_CTRL))
119	root	1.6	HotKey_ToggleGrab ();
120	root	1.1
121			if ((event->key.keysym.sym == SDLK_z) &&
122			(event->key.keysym.mod & KMOD_CTRL))
123	root	1.6	HotKey_Iconify ();
124	root	1.1
125			if ((event->key.keysym.sym == SDLK_RETURN) &&
126			(event->key.keysym.mod & KMOD_ALT))
127	root	1.6	HotKey_ToggleFullScreen ();
128	root	1.1
129			break;
130
131	root	1.18	case SDL_KEYUP:
132	root	1.19	if (event->key.keysym.sym == SDLK_UP) camera_velocity.z++;
133			if (event->key.keysym.sym == SDLK_DOWN) camera_velocity.z--;
134			if (event->key.keysym.sym == SDLK_LEFT) camera_velocity.x++;
135			if (event->key.keysym.sym == SDLK_RIGHT) camera_velocity.x--;
136			if (event->key.keysym.sym == SDLK_a) camera_velocity.y++;
137			if (event->key.keysym.sym == SDLK_s) camera_velocity.y--;
138	root	1.18	break;
139
140	root	1.1	case SDL_QUIT:
141			done = 1;
142			break;
143			}
144
145			return (done);
146			}
147
148			/* Quick utility function for texture creation */
149			static int
150			power_of_two (int input)
151			{
152			int value = 1;
153
154			while (value < input)
155			{
156			value <<= 1;
157			}
158			return value;
159			}
160
161			GLuint
162			SDL_GL_LoadTexture (SDL_Surface * surface, GLfloat * texcoord)
163			{
164			GLuint texture;
165			int w, h;
166			SDL_Surface *image;
167			SDL_Rect area;
168			Uint32 saved_flags;
169			Uint8 saved_alpha;
170
171			/* Use the surface width and height expanded to powers of 2 */
172			w = power_of_two (surface->w);
173			h = power_of_two (surface->h);
174			texcoord[0] = 0.0f; /* Min X */
175			texcoord[1] = 0.0f; /* Min Y */
176			texcoord[2] = (GLfloat) surface->w / w; /* Max X */
177			texcoord[3] = (GLfloat) surface->h / h; /* Max Y */
178
179			image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32,
180			#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
181			0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
182			#else
183			0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
184			#endif
185			);
186			if (image == NULL)
187			{
188			return 0;
189			}
190
191			/* Save the alpha blending attributes */
192			saved_flags = surface->flags & (SDL_SRCALPHA \| SDL_RLEACCELOK);
193			saved_alpha = surface->format->alpha;
194			if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
195			{
196			SDL_SetAlpha (surface, 0, 0);
197			}
198
199			/* Copy the surface into the GL texture image */
200			area.x = 0;
201			area.y = 0;
202			area.w = surface->w;
203			area.h = surface->h;
204			SDL_BlitSurface (surface, &area, image, &area);
205
206			/* Restore the alpha blending attributes */
207			if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
208			{
209			SDL_SetAlpha (surface, saved_flags, saved_alpha);
210			}
211
212			/* Create an OpenGL texture for the image */
213			glGenTextures (1, &texture);
214			glBindTexture (GL_TEXTURE_2D, texture);
215			glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
216			glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
217			glTexImage2D (GL_TEXTURE_2D,
218			0,
219			GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
220			SDL_FreeSurface (image); /* No longer needed */
221
222			return texture;
223			}
224
225			int
226			RunGLTest (int argc, char *argv[],
227			int logo, int slowly, int bpp, float gamma, int noframe, int fsaa)
228			{
229			int i;
230			int rgb_size[3];
231			int w = 640;
232			int h = 480;
233			int done = 0;
234			int frames;
235			Uint32 start_time, this_time;
236	root	1.2	Uint32 video_flags;
237	root	1.1	int value;
238
239			if (SDL_Init (SDL_INIT_VIDEO) < 0)
240			{
241			fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ());
242			exit (1);
243			}
244
245			/* See if we should detect the display depth */
246			if (bpp == 0)
247			{
248			if (SDL_GetVideoInfo ()->vfmt->BitsPerPixel <= 8)
249	root	1.3	bpp = 8;
250	root	1.1	else
251	root	1.3	bpp = 16; /* More doesn't seem to work */
252	root	1.1	}
253
254	root	1.2	video_flags = SDL_OPENGL;
255
256	root	1.1	for (i = 1; argv[i]; ++i)
257	root	1.3	if (strcmp (argv[1], "-fullscreen") == 0)
258			video_flags \|= SDL_FULLSCREEN;
259	root	1.1
260			if (noframe)
261	root	1.3	video_flags \|= SDL_NOFRAME;
262	root	1.1
263			/* Initialize the display */
264			switch (bpp)
265			{
266			case 8:
267			rgb_size[0] = 3;
268			rgb_size[1] = 3;
269			rgb_size[2] = 2;
270			break;
271	root	1.3
272	root	1.1	case 15:
273			case 16:
274			rgb_size[0] = 5;
275			rgb_size[1] = 5;
276			rgb_size[2] = 5;
277			break;
278	root	1.3
279	root	1.1	default:
280			rgb_size[0] = 8;
281			rgb_size[1] = 8;
282			rgb_size[2] = 8;
283			break;
284			}
285	root	1.18
286	root	1.1	SDL_GL_SetAttribute (SDL_GL_RED_SIZE, rgb_size[0]);
287			SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, rgb_size[1]);
288			SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, rgb_size[2]);
289			SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 16);
290			SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
291	root	1.3
292	root	1.1	if (fsaa)
293			{
294			SDL_GL_SetAttribute (SDL_GL_MULTISAMPLEBUFFERS, 1);
295			SDL_GL_SetAttribute (SDL_GL_MULTISAMPLESAMPLES, fsaa);
296			}
297	root	1.3
298	root	1.1	if (SDL_SetVideoMode (w, h, bpp, video_flags) == NULL)
299			{
300			fprintf (stderr, "Couldn't set GL mode: %s\n", SDL_GetError ());
301			SDL_Quit ();
302			exit (1);
303			}
304
305			printf ("Screen BPP: %d\n", SDL_GetVideoSurface ()->format->BitsPerPixel);
306			printf ("\n");
307			printf ("Vendor : %s\n", glGetString (GL_VENDOR));
308			printf ("Renderer : %s\n", glGetString (GL_RENDERER));
309			printf ("Version : %s\n", glGetString (GL_VERSION));
310			printf ("Extensions : %s\n", glGetString (GL_EXTENSIONS));
311			printf ("\n");
312
313			SDL_GL_GetAttribute (SDL_GL_RED_SIZE, &value);
314			printf ("SDL_GL_RED_SIZE: requested %d, got %d\n", rgb_size[0], value);
315			SDL_GL_GetAttribute (SDL_GL_GREEN_SIZE, &value);
316			printf ("SDL_GL_GREEN_SIZE: requested %d, got %d\n", rgb_size[1], value);
317			SDL_GL_GetAttribute (SDL_GL_BLUE_SIZE, &value);
318			printf ("SDL_GL_BLUE_SIZE: requested %d, got %d\n", rgb_size[2], value);
319			SDL_GL_GetAttribute (SDL_GL_DEPTH_SIZE, &value);
320			printf ("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", bpp, value);
321			SDL_GL_GetAttribute (SDL_GL_DOUBLEBUFFER, &value);
322			printf ("SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value);
323	root	1.3
324	root	1.1	if (fsaa)
325			{
326			SDL_GL_GetAttribute (SDL_GL_MULTISAMPLEBUFFERS, &value);
327			printf ("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
328			SDL_GL_GetAttribute (SDL_GL_MULTISAMPLESAMPLES, &value);
329			printf ("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
330			value);
331			}
332
333			/* Set the window manager title bar */
334	root	1.12	SDL_WM_SetCaption ("libgender rendering test", "gendertest");
335	root	1.1
336			/* Set the gamma for the window */
337			if (gamma != 0.0)
338	root	1.3	SDL_SetGamma (gamma, gamma, gamma);
339	root	1.1
340	root	1.17	// load a entity
341			for (int i = 0; i < 7; i++)
342			{
343			txtprt_parser p;
344	root	1.18	entity_transform *f = new entity_transform;
345	root	1.17	entity *e;
346			try
347			{
348			e = p.read ("test.blasc");
349			} catch (txtprt_i_exception & e)
350			{
351			cout << "ERR: " << e.msg << endl;
352			}
353			f->set (e);
354	root	1.26	f->update (matrix::translation (vec3 (0, -1, -i*5)));
355	root	1.17	f->show ();
356			}
357
358	root	1.13	camera.orig.x = camera.orig.y = camera.orig.z = 0;
359	root	1.6	camera.p = point (0, 0, 10);
360			camera.d = vec3 (0, 0, -1);
361			camera.u = vec3 (0, 1, 0);
362			camera.w = w; camera.h = h;
363			camera.fov = 90;
364	root	1.1
365			glMatrixMode (GL_MODELVIEW);
366			glLoadIdentity ();
367
368	root	1.16	glEnable (GL_CULL_FACE);
369	root	1.1	glEnable (GL_DEPTH_TEST);
370	root	1.22
371	root	1.11	glShadeModel (GL_SMOOTH);
372	root	1.6
373	root	1.3	glEnable (GL_LIGHTING);
374	root	1.9	//GLfloat lightc[4] = { 1, 0.1, 0.1, 1 };
375	root	1.6	//glLightf (GL_LIGHT0, GL_QUADRATIC_ATTENUATION);
376	root	1.9	//glLightfv (GL_LIGHT0, GL_DIFFUSE, lightc);
377	root	1.6	glEnable (GL_LIGHT0);
378	root	1.29
379			cgc = cgCreateContext ();
380			vsh = cgCreateProgramFromFile (cgc, CG_SOURCE, "vsh.cg", CG_PROFILE_ARBVP1, 0, 0);
381			CheckCgError ();
382			cgGLLoadProgram (vsh);
383			CheckCgError ();
384			mv = cgGetNamedParameter (vsh, "WorldProj");
385			mvp = cgGetNamedParameter (vsh, "WorldViewProj");
386	root	1.30	lightpos = cgGetNamedParameter (vsh, "LightPos");
387	root	1.29	CheckCgError ();
388
389			fsh = cgCreateProgramFromFile (cgc, CG_SOURCE, "fsh.cg", CG_PROFILE_ARBFP1, 0, 0);
390	root	1.30	CheckCgError ();
391	root	1.29	cgGLLoadProgram (fsh);
392	root	1.30	CheckCgError ();
393	root	1.29
394			cgGLBindProgram (vsh);
395	root	1.30	CheckCgError ();
396	root	1.29	cgGLBindProgram (fsh);
397	root	1.30	CheckCgError ();
398	root	1.1
399			/* Loop until done. */
400			start_time = SDL_GetTicks ();
401			frames = 0;
402	root	1.16
403			draw_context c (camera);
404
405	root	1.1	while (!done)
406			{
407			GLenum gl_error;
408			char *sdl_error;
409			SDL_Event event;
410
411			glClear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
412
413	root	1.19	camera.p.x += (camera_velocity_factor * camera_velocity.x) * timer.diff;
414			camera.p.y += (camera_velocity_factor * camera_velocity.y) * timer.diff;
415			camera.p.z += (camera_velocity_factor * camera_velocity.z) * timer.diff;
416	root	1.18
417	root	1.30	cgGLSetParameter4f (lightpos, camera.p.x, camera.p.y, camera.p.z, 1);
418	root	1.6
419	root	1.5	#if 0
420	root	1.3	static GLfloat ry;
421	root	1.13	ry += 0.001;
422			camera.d.x = cos (ry);
423			camera.d.z = sin (ry);
424			//camera.d.y = sin (ry * 0.1);
425	root	1.5	#endif
426	root	1.1
427	root	1.16	c.mode = draw_context::DEPTH;
428			camera.draw (c);
429	root	1.9	c.mode = draw_context::LIGHTED;
430	root	1.6	camera.draw (c);
431	root	1.1
432			SDL_GL_SwapBuffers ();
433	root	1.15	timer.frame ();
434	root	1.1
435			/* Check for error conditions. */
436			gl_error = glGetError ();
437
438			if (gl_error != GL_NO_ERROR)
439	root	1.3	fprintf (stderr, "testgl: OpenGL error: %d\n", gl_error);
440	root	1.1
441			sdl_error = SDL_GetError ();
442
443			if (sdl_error[0] != '\0')
444			{
445			fprintf (stderr, "testgl: SDL error '%s'\n", sdl_error);
446			SDL_ClearError ();
447			}
448
449			/* Allow the user to see what's happening */
450	root	1.9	//SDL_Delay (20);
451	root	1.1
452			/* Check if there's a pending event. */
453			while (SDL_PollEvent (&event))
454	root	1.18	done = HandleEvent (&event);
455	root	1.20
456	root	1.18
457	root	1.1	++frames;
458			}
459
460			/* Print out the frames per second */
461			this_time = SDL_GetTicks ();
462			if (this_time != start_time)
463			{
464			printf ("%2.2f FPS\n",
465			((float) frames / (this_time - start_time)) * 1000.0);
466			}
467
468			if (global_image)
469			{
470			SDL_FreeSurface (global_image);
471			global_image = NULL;
472			}
473			if (global_texture)
474			{
475			glDeleteTextures (1, &global_texture);
476			global_texture = 0;
477			}
478
479			/* Destroy our GL context, etc. */
480			SDL_Quit ();
481			return (0);
482			}
483
484			int
485			main (int argc, char *argv[])
486			{
487			int i, logo;
488			int numtests;
489			int bpp = 0;
490			int slowly;
491			float gamma = 0.0;
492			int noframe = 0;
493			int fsaa = 0;
494	root	1.4
495	root	1.1	logo = 0;
496			slowly = 0;
497			numtests = 1;
498			for (i = 1; argv[i]; ++i)
499			{
500			if (strcmp (argv[i], "-twice") == 0)
501			{
502			++numtests;
503			}
504			if (strcmp (argv[i], "-slow") == 0)
505			{
506			slowly = 1;
507			}
508			if (strcmp (argv[i], "-bpp") == 0)
509			{
510			bpp = atoi (argv[++i]);
511			}
512			if (strcmp (argv[i], "-gamma") == 0)
513			{
514			gamma = (float) atof (argv[++i]);
515			}
516			if (strcmp (argv[i], "-noframe") == 0)
517			{
518			noframe = 1;
519			}
520			if (strcmp (argv[i], "-fsaa") == 0)
521			{
522			++fsaa;
523			}
524			if (strncmp (argv[i], "-h", 2) == 0)
525			{
526			printf
527			("Usage: %s [-twice] [-logo] [-slow] [-bpp n] [-gamma n] [-noframe] [-fsaa]\n",
528			argv[0]);
529			exit (0);
530			}
531			}
532	root	1.17
533	root	1.1	for (i = 0; i < numtests; ++i)
534	root	1.17	RunGLTest (argc, argv, logo, slowly, bpp, gamma, noframe, fsaa);
535
536	root	1.1	return 0;
537			}