cvsroot/libgender/test.C

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <sh/sh.hpp>

using namespace SH;

#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;

ShColor3f color = ShColor3f(.5, 0.9, 0.2);
ShPoint3f lightPos = ShPoint3f(0.0, 10.0, 10.0);
ShMatrix4x4f mvp, mv;
ShProgram vsh, fsh;

void 
init_shaders() {
   {
   vsh = SH_BEGIN_PROGRAM("gpu:vertex") 
      ShInputNormal3f normal;
                           ShInputPosition4f p;

                           ShOutputPoint4f ov;
                           ShOutputNormal3f on;
                           ShOutputVector3f lvv;
                           ShOutputPosition4f opd;

                           opd = mvp | p;
                           on = normalize(mv | normal);
                           ov = -normalize(mv | p);
                           lvv = normalize(lightPos - (mv | p)(0,1,2));
   SH_END;
   }
   // declare and initialize diffuse color
   ShColor3f kd = ShColor3f(0.5, 0.7, 0.9);
   {
   fsh = SH_BEGIN_PROGRAM("gpu:fragment") 
      ShInputVector4f v;
   ShInputNormal3f n;
   ShInputVector3f lvv;
   ShInputPosition4f p;

   ShOutputColor3f out;
   out(0,1,2) = color * dot(normalize(n), normalize(lvv));


   SH_END;
   }
}
                                              

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);
  shInit();
  shSetBackend("arb");
  glEnable(GL_VERTEX_PROGRAM_ARB);
  glEnable(GL_FRAGMENT_PROGRAM_ARB);

  init_shaders();
  shBind(vsh);
  shBind(fsh);
  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:	1.23
Committed:	Tue Oct 5 02:17:57 2004 UTC (21 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.22:	+3 -2 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	root	1.22	#include <sh/sh.hpp>
6
7			using namespace SH;
8	root	1.1
9			#include "SDL.h"
10
11			#include "SDL_opengl.h"
12
13			/* Undefine this if you want a flat cube instead of a rainbow cube */
14			#define SHADED_CUBE
15
16			/* Define this to be the name of the logo image to use with -logo */
17			#define LOGO_FILE "icon.bmp"
18
19			static SDL_Surface *global_image = NULL;
20			static GLuint global_texture = 0;
21
22	root	1.2	#include "entity.h"
23
24	root	1.4	#include "txtprt_import.h"
25
26	root	1.1	/**********************************************************************/
27
28	root	1.6	view camera;
29	root	1.18	vec3 camera_velocity;
30	root	1.20	float camera_velocity_factor = 10;
31	root	1.6
32	root	1.23	ShColor3f color = ShColor3f(.5, 0.9, 0.2);
33			ShPoint3f lightPos = ShPoint3f(0.0, 10.0, 10.0);
34	root	1.22	ShMatrix4x4f mvp, mv;
35			ShProgram vsh, fsh;
36
37			void
38			init_shaders() {
39			{
40			vsh = SH_BEGIN_PROGRAM("gpu:vertex")
41			ShInputNormal3f normal;
42			ShInputPosition4f p;
43
44			ShOutputPoint4f ov;
45			ShOutputNormal3f on;
46			ShOutputVector3f lvv;
47			ShOutputPosition4f opd;
48
49			opd = mvp \| p;
50			on = normalize(mv \| normal);
51			ov = -normalize(mv \| p);
52			lvv = normalize(lightPos - (mv \| p)(0,1,2));
53			SH_END;
54			}
55			// declare and initialize diffuse color
56			ShColor3f kd = ShColor3f(0.5, 0.7, 0.9);
57			{
58			fsh = SH_BEGIN_PROGRAM("gpu:fragment")
59			ShInputVector4f v;
60			ShInputNormal3f n;
61			ShInputVector3f lvv;
62			ShInputPosition4f p;
63
64			ShOutputColor3f out;
65	root	1.23	out(0,1,2) = color * dot(normalize(n), normalize(lvv));
66	root	1.22
67
68			SH_END;
69			}
70			}
71
72
73	root	1.1	void
74			HotKey_ToggleFullScreen (void)
75			{
76			SDL_Surface *screen;
77
78			screen = SDL_GetVideoSurface ();
79			if (SDL_WM_ToggleFullScreen (screen))
80	root	1.5	printf ("Toggled fullscreen mode - now %s\n",
81			(screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed");
82	root	1.1	else
83	root	1.5	printf ("Unable to toggle fullscreen mode\n");
84	root	1.1	}
85
86			void
87			HotKey_ToggleGrab (void)
88			{
89			SDL_GrabMode mode;
90
91			printf ("Ctrl-G: toggling input grab!\n");
92			mode = SDL_WM_GrabInput (SDL_GRAB_QUERY);
93			if (mode == SDL_GRAB_ON)
94	root	1.5	printf ("Grab was on\n");
95	root	1.1	else
96	root	1.5	printf ("Grab was off\n");
97	root	1.1
98			mode = SDL_WM_GrabInput (mode ? SDL_GRAB_OFF : SDL_GRAB_ON);
99			if (mode == SDL_GRAB_ON)
100	root	1.5	printf ("Grab is now on\n");
101	root	1.1	else
102	root	1.5	printf ("Grab is now off\n");
103	root	1.1	}
104
105			void
106			HotKey_Iconify (void)
107			{
108			printf ("Ctrl-Z: iconifying window!\n");
109			SDL_WM_IconifyWindow ();
110			}
111
112			int
113			HandleEvent (SDL_Event * event)
114			{
115			int done;
116
117			done = 0;
118			switch (event->type)
119			{
120			case SDL_ACTIVEEVENT:
121			/* See what happened */
122			printf ("app %s ", event->active.gain ? "gained" : "lost");
123			if (event->active.state & SDL_APPACTIVE)
124			{
125			printf ("active ");
126			}
127			else if (event->active.state & SDL_APPMOUSEFOCUS)
128			{
129			printf ("mouse ");
130			}
131			else if (event->active.state & SDL_APPINPUTFOCUS)
132			{
133			printf ("input ");
134			}
135
136			printf ("focus\n");
137			break;
138
139	root	1.18	#define VELOCITY 10
140	root	1.1	case SDL_KEYDOWN:
141	root	1.19	if (event->key.keysym.sym == SDLK_UP) camera_velocity.z--;
142			if (event->key.keysym.sym == SDLK_DOWN) camera_velocity.z++;
143			if (event->key.keysym.sym == SDLK_LEFT) camera_velocity.x--;
144			if (event->key.keysym.sym == SDLK_RIGHT) camera_velocity.x++;
145			if (event->key.keysym.sym == SDLK_a) camera_velocity.y--;
146			if (event->key.keysym.sym == SDLK_s) camera_velocity.y++;
147			if (event->key.keysym.sym == SDLK_v) camera_velocity_factor *= 1.5;
148			if (event->key.keysym.sym == SDLK_b) camera_velocity_factor /= 1.5;
149	root	1.6
150	root	1.1	if (event->key.keysym.sym == SDLK_ESCAPE)
151	root	1.6	done = 1;
152	root	1.1
153			if ((event->key.keysym.sym == SDLK_g) &&
154			(event->key.keysym.mod & KMOD_CTRL))
155	root	1.6	HotKey_ToggleGrab ();
156	root	1.1
157			if ((event->key.keysym.sym == SDLK_z) &&
158			(event->key.keysym.mod & KMOD_CTRL))
159	root	1.6	HotKey_Iconify ();
160	root	1.1
161			if ((event->key.keysym.sym == SDLK_RETURN) &&
162			(event->key.keysym.mod & KMOD_ALT))
163	root	1.6	HotKey_ToggleFullScreen ();
164	root	1.1
165			break;
166
167	root	1.18	case SDL_KEYUP:
168	root	1.19	if (event->key.keysym.sym == SDLK_UP) camera_velocity.z++;
169			if (event->key.keysym.sym == SDLK_DOWN) camera_velocity.z--;
170			if (event->key.keysym.sym == SDLK_LEFT) camera_velocity.x++;
171			if (event->key.keysym.sym == SDLK_RIGHT) camera_velocity.x--;
172			if (event->key.keysym.sym == SDLK_a) camera_velocity.y++;
173			if (event->key.keysym.sym == SDLK_s) camera_velocity.y--;
174	root	1.18	break;
175
176	root	1.1	case SDL_QUIT:
177			done = 1;
178			break;
179			}
180
181			return (done);
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			int
262			RunGLTest (int argc, char *argv[],
263			int logo, int slowly, int bpp, float gamma, int noframe, int fsaa)
264			{
265			int i;
266			int rgb_size[3];
267			int w = 640;
268			int h = 480;
269			int done = 0;
270			int frames;
271			Uint32 start_time, this_time;
272	root	1.2	Uint32 video_flags;
273	root	1.1	int value;
274
275			if (SDL_Init (SDL_INIT_VIDEO) < 0)
276			{
277			fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ());
278			exit (1);
279			}
280
281			/* See if we should detect the display depth */
282			if (bpp == 0)
283			{
284			if (SDL_GetVideoInfo ()->vfmt->BitsPerPixel <= 8)
285	root	1.3	bpp = 8;
286	root	1.1	else
287	root	1.3	bpp = 16; /* More doesn't seem to work */
288	root	1.1	}
289
290	root	1.2	video_flags = SDL_OPENGL;
291
292	root	1.1	for (i = 1; argv[i]; ++i)
293	root	1.3	if (strcmp (argv[1], "-fullscreen") == 0)
294			video_flags \|= SDL_FULLSCREEN;
295	root	1.1
296			if (noframe)
297	root	1.3	video_flags \|= SDL_NOFRAME;
298	root	1.1
299			/* Initialize the display */
300			switch (bpp)
301			{
302			case 8:
303			rgb_size[0] = 3;
304			rgb_size[1] = 3;
305			rgb_size[2] = 2;
306			break;
307	root	1.3
308	root	1.1	case 15:
309			case 16:
310			rgb_size[0] = 5;
311			rgb_size[1] = 5;
312			rgb_size[2] = 5;
313			break;
314	root	1.3
315	root	1.1	default:
316			rgb_size[0] = 8;
317			rgb_size[1] = 8;
318			rgb_size[2] = 8;
319			break;
320			}
321	root	1.18
322	root	1.1	SDL_GL_SetAttribute (SDL_GL_RED_SIZE, rgb_size[0]);
323			SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, rgb_size[1]);
324			SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, rgb_size[2]);
325			SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 16);
326			SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
327	root	1.3
328	root	1.1	if (fsaa)
329			{
330			SDL_GL_SetAttribute (SDL_GL_MULTISAMPLEBUFFERS, 1);
331			SDL_GL_SetAttribute (SDL_GL_MULTISAMPLESAMPLES, fsaa);
332			}
333	root	1.3
334	root	1.1	if (SDL_SetVideoMode (w, h, bpp, video_flags) == NULL)
335			{
336			fprintf (stderr, "Couldn't set GL mode: %s\n", SDL_GetError ());
337			SDL_Quit ();
338			exit (1);
339			}
340
341			printf ("Screen BPP: %d\n", SDL_GetVideoSurface ()->format->BitsPerPixel);
342			printf ("\n");
343			printf ("Vendor : %s\n", glGetString (GL_VENDOR));
344			printf ("Renderer : %s\n", glGetString (GL_RENDERER));
345			printf ("Version : %s\n", glGetString (GL_VERSION));
346			printf ("Extensions : %s\n", glGetString (GL_EXTENSIONS));
347			printf ("\n");
348
349			SDL_GL_GetAttribute (SDL_GL_RED_SIZE, &value);
350			printf ("SDL_GL_RED_SIZE: requested %d, got %d\n", rgb_size[0], value);
351			SDL_GL_GetAttribute (SDL_GL_GREEN_SIZE, &value);
352			printf ("SDL_GL_GREEN_SIZE: requested %d, got %d\n", rgb_size[1], value);
353			SDL_GL_GetAttribute (SDL_GL_BLUE_SIZE, &value);
354			printf ("SDL_GL_BLUE_SIZE: requested %d, got %d\n", rgb_size[2], value);
355			SDL_GL_GetAttribute (SDL_GL_DEPTH_SIZE, &value);
356			printf ("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", bpp, value);
357			SDL_GL_GetAttribute (SDL_GL_DOUBLEBUFFER, &value);
358			printf ("SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value);
359	root	1.3
360	root	1.1	if (fsaa)
361			{
362			SDL_GL_GetAttribute (SDL_GL_MULTISAMPLEBUFFERS, &value);
363			printf ("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
364			SDL_GL_GetAttribute (SDL_GL_MULTISAMPLESAMPLES, &value);
365			printf ("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
366			value);
367			}
368
369			/* Set the window manager title bar */
370	root	1.12	SDL_WM_SetCaption ("libgender rendering test", "gendertest");
371	root	1.1
372			/* Set the gamma for the window */
373			if (gamma != 0.0)
374	root	1.3	SDL_SetGamma (gamma, gamma, gamma);
375	root	1.1
376	root	1.17	// load a entity
377			for (int i = 0; i < 7; i++)
378			{
379			txtprt_parser p;
380	root	1.18	entity_transform *f = new entity_transform;
381	root	1.17	entity *e;
382			try
383			{
384			e = p.read ("test.blasc");
385			} catch (txtprt_i_exception & e)
386			{
387			cout << "ERR: " << e.msg << endl;
388			}
389			f->set (e);
390	root	1.21	f->update (gl_matrix::translation (vec3 (0, -1, -i*5)));
391	root	1.17	f->show ();
392			}
393
394	root	1.13	camera.orig.x = camera.orig.y = camera.orig.z = 0;
395	root	1.6	camera.p = point (0, 0, 10);
396			camera.d = vec3 (0, 0, -1);
397			camera.u = vec3 (0, 1, 0);
398			camera.w = w; camera.h = h;
399			camera.fov = 90;
400	root	1.1
401			glMatrixMode (GL_MODELVIEW);
402			glLoadIdentity ();
403
404	root	1.16	glEnable (GL_CULL_FACE);
405	root	1.1	glEnable (GL_DEPTH_TEST);
406	root	1.22	shInit();
407			shSetBackend("arb");
408			glEnable(GL_VERTEX_PROGRAM_ARB);
409			glEnable(GL_FRAGMENT_PROGRAM_ARB);
410
411			init_shaders();
412			shBind(vsh);
413			shBind(fsh);
414	root	1.11	glShadeModel (GL_SMOOTH);
415	root	1.6
416	root	1.3	glEnable (GL_LIGHTING);
417	root	1.9	//GLfloat lightc[4] = { 1, 0.1, 0.1, 1 };
418	root	1.6	//glLightf (GL_LIGHT0, GL_QUADRATIC_ATTENUATION);
419	root	1.9	//glLightfv (GL_LIGHT0, GL_DIFFUSE, lightc);
420	root	1.6	glEnable (GL_LIGHT0);
421	root	1.1
422			/* Loop until done. */
423			start_time = SDL_GetTicks ();
424			frames = 0;
425	root	1.16
426			draw_context c (camera);
427
428	root	1.1	while (!done)
429			{
430			GLenum gl_error;
431			char *sdl_error;
432			SDL_Event event;
433
434			glClear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
435
436	root	1.19	camera.p.x += (camera_velocity_factor * camera_velocity.x) * timer.diff;
437			camera.p.y += (camera_velocity_factor * camera_velocity.y) * timer.diff;
438			camera.p.z += (camera_velocity_factor * camera_velocity.z) * timer.diff;
439	root	1.18
440	root	1.6	GLfloat lightp[4];
441			lightp[0] = camera.p.x;
442			lightp[1] = camera.p.y;
443			lightp[2] = camera.p.z;
444			lightp[3] = 1;
445			glLightfv (GL_LIGHT0, GL_POSITION, lightp);
446
447	root	1.5	#if 0
448	root	1.3	static GLfloat ry;
449	root	1.13	ry += 0.001;
450			camera.d.x = cos (ry);
451			camera.d.z = sin (ry);
452			//camera.d.y = sin (ry * 0.1);
453	root	1.5	#endif
454	root	1.1
455	root	1.16	c.mode = draw_context::DEPTH;
456			camera.draw (c);
457	root	1.9	c.mode = draw_context::LIGHTED;
458	root	1.6	camera.draw (c);
459	root	1.1
460			SDL_GL_SwapBuffers ();
461	root	1.15	timer.frame ();
462	root	1.1
463			/* Check for error conditions. */
464			gl_error = glGetError ();
465
466			if (gl_error != GL_NO_ERROR)
467	root	1.3	fprintf (stderr, "testgl: OpenGL error: %d\n", gl_error);
468	root	1.1
469			sdl_error = SDL_GetError ();
470
471			if (sdl_error[0] != '\0')
472			{
473			fprintf (stderr, "testgl: SDL error '%s'\n", sdl_error);
474			SDL_ClearError ();
475			}
476
477			/* Allow the user to see what's happening */
478	root	1.9	//SDL_Delay (20);
479	root	1.1
480			/* Check if there's a pending event. */
481			while (SDL_PollEvent (&event))
482	root	1.18	done = HandleEvent (&event);
483	root	1.20
484	root	1.18
485	root	1.1	++frames;
486			}
487
488			/* Print out the frames per second */
489			this_time = SDL_GetTicks ();
490			if (this_time != start_time)
491			{
492			printf ("%2.2f FPS\n",
493			((float) frames / (this_time - start_time)) * 1000.0);
494			}
495
496			if (global_image)
497			{
498			SDL_FreeSurface (global_image);
499			global_image = NULL;
500			}
501			if (global_texture)
502			{
503			glDeleteTextures (1, &global_texture);
504			global_texture = 0;
505			}
506
507			/* Destroy our GL context, etc. */
508			SDL_Quit ();
509			return (0);
510			}
511
512			int
513			main (int argc, char *argv[])
514			{
515			int i, logo;
516			int numtests;
517			int bpp = 0;
518			int slowly;
519			float gamma = 0.0;
520			int noframe = 0;
521			int fsaa = 0;
522	root	1.4
523	root	1.1	logo = 0;
524			slowly = 0;
525			numtests = 1;
526			for (i = 1; argv[i]; ++i)
527			{
528			if (strcmp (argv[i], "-twice") == 0)
529			{
530			++numtests;
531			}
532			if (strcmp (argv[i], "-slow") == 0)
533			{
534			slowly = 1;
535			}
536			if (strcmp (argv[i], "-bpp") == 0)
537			{
538			bpp = atoi (argv[++i]);
539			}
540			if (strcmp (argv[i], "-gamma") == 0)
541			{
542			gamma = (float) atof (argv[++i]);
543			}
544			if (strcmp (argv[i], "-noframe") == 0)
545			{
546			noframe = 1;
547			}
548			if (strcmp (argv[i], "-fsaa") == 0)
549			{
550			++fsaa;
551			}
552			if (strncmp (argv[i], "-h", 2) == 0)
553			{
554			printf
555			("Usage: %s [-twice] [-logo] [-slow] [-bpp n] [-gamma n] [-noframe] [-fsaa]\n",
556			argv[0]);
557			exit (0);
558			}
559			}
560	root	1.17
561	root	1.1	for (i = 0; i < numtests; ++i)
562	root	1.17	RunGLTest (argc, argv, logo, slowly, bpp, gamma, noframe, fsaa);
563
564	root	1.1	return 0;
565			}