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;
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 (mvp | normal);
      ov = -normalize (mvp | p);
      lvv = normalize (lightPos - (mvp | 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));
      out(0,1,2) = kd;
    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:	1.24
Committed:	Tue Oct 5 02:42:12 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.23:	+33 -32 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	1.24	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	1.24	ShMatrix4x4f mvp;
35	root	1.22	ShProgram vsh, fsh;
36
37	root	1.24	void
38			init_shaders ()
39			{
40			{
41			vsh = SH_BEGIN_PROGRAM ("gpu:vertex")
42	root	1.22	ShInputNormal3f normal;
43	root	1.24	ShInputPosition4f p;
44	root	1.22
45	root	1.24	ShOutputPoint4f ov;
46			ShOutputNormal3f on;
47			ShOutputVector3f lvv;
48			ShOutputPosition4f opd;
49
50			opd = mvp \| p;
51			on = normalize (mvp \| normal);
52			ov = -normalize (mvp \| p);
53			lvv = normalize (lightPos - (mvp \| p) (0, 1, 2));
54			SH_END;
55			}
56	root	1.22
57	root	1.24	// declare and initialize diffuse color
58			ShColor3f kd = ShColor3f (0.5, 0.7, 0.9);
59	root	1.22
60	root	1.24	{
61			fsh = SH_BEGIN_PROGRAM ("gpu:fragment")
62			ShInputVector4f v;
63			ShInputNormal3f n;
64			ShInputVector3f lvv;
65			ShInputPosition4f p;
66
67			ShOutputColor3f out;
68			out (0, 1, 2) = color * dot (normalize (n), normalize (lvv));
69			out(0,1,2) = kd;
70			SH_END;
71			}
72	root	1.22	}
73
74	root	1.1	void
75			HotKey_ToggleFullScreen (void)
76			{
77			SDL_Surface *screen;
78
79			screen = SDL_GetVideoSurface ();
80			if (SDL_WM_ToggleFullScreen (screen))
81	root	1.5	printf ("Toggled fullscreen mode - now %s\n",
82			(screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed");
83	root	1.1	else
84	root	1.5	printf ("Unable to toggle fullscreen mode\n");
85	root	1.1	}
86
87			void
88			HotKey_ToggleGrab (void)
89			{
90			SDL_GrabMode mode;
91
92			printf ("Ctrl-G: toggling input grab!\n");
93			mode = SDL_WM_GrabInput (SDL_GRAB_QUERY);
94			if (mode == SDL_GRAB_ON)
95	root	1.5	printf ("Grab was on\n");
96	root	1.1	else
97	root	1.5	printf ("Grab was off\n");
98	root	1.1
99			mode = SDL_WM_GrabInput (mode ? SDL_GRAB_OFF : SDL_GRAB_ON);
100			if (mode == SDL_GRAB_ON)
101	root	1.5	printf ("Grab is now on\n");
102	root	1.1	else
103	root	1.5	printf ("Grab is now off\n");
104	root	1.1	}
105
106			void
107			HotKey_Iconify (void)
108			{
109			printf ("Ctrl-Z: iconifying window!\n");
110			SDL_WM_IconifyWindow ();
111			}
112
113			int
114			HandleEvent (SDL_Event * event)
115			{
116			int done;
117
118			done = 0;
119			switch (event->type)
120			{
121			case SDL_ACTIVEEVENT:
122			/* See what happened */
123			printf ("app %s ", event->active.gain ? "gained" : "lost");
124			if (event->active.state & SDL_APPACTIVE)
125			{
126			printf ("active ");
127			}
128			else if (event->active.state & SDL_APPMOUSEFOCUS)
129			{
130			printf ("mouse ");
131			}
132			else if (event->active.state & SDL_APPINPUTFOCUS)
133			{
134			printf ("input ");
135			}
136
137			printf ("focus\n");
138			break;
139
140	root	1.18	#define VELOCITY 10
141	root	1.1	case SDL_KEYDOWN:
142	root	1.19	if (event->key.keysym.sym == SDLK_UP) camera_velocity.z--;
143			if (event->key.keysym.sym == SDLK_DOWN) camera_velocity.z++;
144			if (event->key.keysym.sym == SDLK_LEFT) camera_velocity.x--;
145			if (event->key.keysym.sym == SDLK_RIGHT) camera_velocity.x++;
146			if (event->key.keysym.sym == SDLK_a) camera_velocity.y--;
147			if (event->key.keysym.sym == SDLK_s) camera_velocity.y++;
148			if (event->key.keysym.sym == SDLK_v) camera_velocity_factor *= 1.5;
149			if (event->key.keysym.sym == SDLK_b) camera_velocity_factor /= 1.5;
150	root	1.6
151	root	1.1	if (event->key.keysym.sym == SDLK_ESCAPE)
152	root	1.6	done = 1;
153	root	1.1
154			if ((event->key.keysym.sym == SDLK_g) &&
155			(event->key.keysym.mod & KMOD_CTRL))
156	root	1.6	HotKey_ToggleGrab ();
157	root	1.1
158			if ((event->key.keysym.sym == SDLK_z) &&
159			(event->key.keysym.mod & KMOD_CTRL))
160	root	1.6	HotKey_Iconify ();
161	root	1.1
162			if ((event->key.keysym.sym == SDLK_RETURN) &&
163			(event->key.keysym.mod & KMOD_ALT))
164	root	1.6	HotKey_ToggleFullScreen ();
165	root	1.1
166			break;
167
168	root	1.18	case SDL_KEYUP:
169	root	1.19	if (event->key.keysym.sym == SDLK_UP) camera_velocity.z++;
170			if (event->key.keysym.sym == SDLK_DOWN) camera_velocity.z--;
171			if (event->key.keysym.sym == SDLK_LEFT) camera_velocity.x++;
172			if (event->key.keysym.sym == SDLK_RIGHT) camera_velocity.x--;
173			if (event->key.keysym.sym == SDLK_a) camera_velocity.y++;
174			if (event->key.keysym.sym == SDLK_s) camera_velocity.y--;
175	root	1.18	break;
176
177	root	1.1	case SDL_QUIT:
178			done = 1;
179			break;
180			}
181
182			return (done);
183			}
184
185			/* Quick utility function for texture creation */
186			static int
187			power_of_two (int input)
188			{
189			int value = 1;
190
191			while (value < input)
192			{
193			value <<= 1;
194			}
195			return value;
196			}
197
198			GLuint
199			SDL_GL_LoadTexture (SDL_Surface * surface, GLfloat * texcoord)
200			{
201			GLuint texture;
202			int w, h;
203			SDL_Surface *image;
204			SDL_Rect area;
205			Uint32 saved_flags;
206			Uint8 saved_alpha;
207
208			/* Use the surface width and height expanded to powers of 2 */
209			w = power_of_two (surface->w);
210			h = power_of_two (surface->h);
211			texcoord[0] = 0.0f; /* Min X */
212			texcoord[1] = 0.0f; /* Min Y */
213			texcoord[2] = (GLfloat) surface->w / w; /* Max X */
214			texcoord[3] = (GLfloat) surface->h / h; /* Max Y */
215
216			image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32,
217			#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
218			0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
219			#else
220			0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
221			#endif
222			);
223			if (image == NULL)
224			{
225			return 0;
226			}
227
228			/* Save the alpha blending attributes */
229			saved_flags = surface->flags & (SDL_SRCALPHA \| SDL_RLEACCELOK);
230			saved_alpha = surface->format->alpha;
231			if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
232			{
233			SDL_SetAlpha (surface, 0, 0);
234			}
235
236			/* Copy the surface into the GL texture image */
237			area.x = 0;
238			area.y = 0;
239			area.w = surface->w;
240			area.h = surface->h;
241			SDL_BlitSurface (surface, &area, image, &area);
242
243			/* Restore the alpha blending attributes */
244			if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
245			{
246			SDL_SetAlpha (surface, saved_flags, saved_alpha);
247			}
248
249			/* Create an OpenGL texture for the image */
250			glGenTextures (1, &texture);
251			glBindTexture (GL_TEXTURE_2D, texture);
252			glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
253			glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
254			glTexImage2D (GL_TEXTURE_2D,
255			0,
256			GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
257			SDL_FreeSurface (image); /* No longer needed */
258
259			return texture;
260			}
261
262			int
263			RunGLTest (int argc, char *argv[],
264			int logo, int slowly, int bpp, float gamma, int noframe, int fsaa)
265			{
266			int i;
267			int rgb_size[3];
268			int w = 640;
269			int h = 480;
270			int done = 0;
271			int frames;
272			Uint32 start_time, this_time;
273	root	1.2	Uint32 video_flags;
274	root	1.1	int value;
275
276			if (SDL_Init (SDL_INIT_VIDEO) < 0)
277			{
278			fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ());
279			exit (1);
280			}
281
282			/* See if we should detect the display depth */
283			if (bpp == 0)
284			{
285			if (SDL_GetVideoInfo ()->vfmt->BitsPerPixel <= 8)
286	root	1.3	bpp = 8;
287	root	1.1	else
288	root	1.3	bpp = 16; /* More doesn't seem to work */
289	root	1.1	}
290
291	root	1.2	video_flags = SDL_OPENGL;
292
293	root	1.1	for (i = 1; argv[i]; ++i)
294	root	1.3	if (strcmp (argv[1], "-fullscreen") == 0)
295			video_flags \|= SDL_FULLSCREEN;
296	root	1.1
297			if (noframe)
298	root	1.3	video_flags \|= SDL_NOFRAME;
299	root	1.1
300			/* Initialize the display */
301			switch (bpp)
302			{
303			case 8:
304			rgb_size[0] = 3;
305			rgb_size[1] = 3;
306			rgb_size[2] = 2;
307			break;
308	root	1.3
309	root	1.1	case 15:
310			case 16:
311			rgb_size[0] = 5;
312			rgb_size[1] = 5;
313			rgb_size[2] = 5;
314			break;
315	root	1.3
316	root	1.1	default:
317			rgb_size[0] = 8;
318			rgb_size[1] = 8;
319			rgb_size[2] = 8;
320			break;
321			}
322	root	1.18
323	root	1.1	SDL_GL_SetAttribute (SDL_GL_RED_SIZE, rgb_size[0]);
324			SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, rgb_size[1]);
325			SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, rgb_size[2]);
326			SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 16);
327			SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
328	root	1.3
329	root	1.1	if (fsaa)
330			{
331			SDL_GL_SetAttribute (SDL_GL_MULTISAMPLEBUFFERS, 1);
332			SDL_GL_SetAttribute (SDL_GL_MULTISAMPLESAMPLES, fsaa);
333			}
334	root	1.3
335	root	1.1	if (SDL_SetVideoMode (w, h, bpp, video_flags) == NULL)
336			{
337			fprintf (stderr, "Couldn't set GL mode: %s\n", SDL_GetError ());
338			SDL_Quit ();
339			exit (1);
340			}
341
342			printf ("Screen BPP: %d\n", SDL_GetVideoSurface ()->format->BitsPerPixel);
343			printf ("\n");
344			printf ("Vendor : %s\n", glGetString (GL_VENDOR));
345			printf ("Renderer : %s\n", glGetString (GL_RENDERER));
346			printf ("Version : %s\n", glGetString (GL_VERSION));
347			printf ("Extensions : %s\n", glGetString (GL_EXTENSIONS));
348			printf ("\n");
349
350			SDL_GL_GetAttribute (SDL_GL_RED_SIZE, &value);
351			printf ("SDL_GL_RED_SIZE: requested %d, got %d\n", rgb_size[0], value);
352			SDL_GL_GetAttribute (SDL_GL_GREEN_SIZE, &value);
353			printf ("SDL_GL_GREEN_SIZE: requested %d, got %d\n", rgb_size[1], value);
354			SDL_GL_GetAttribute (SDL_GL_BLUE_SIZE, &value);
355			printf ("SDL_GL_BLUE_SIZE: requested %d, got %d\n", rgb_size[2], value);
356			SDL_GL_GetAttribute (SDL_GL_DEPTH_SIZE, &value);
357			printf ("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", bpp, value);
358			SDL_GL_GetAttribute (SDL_GL_DOUBLEBUFFER, &value);
359			printf ("SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value);
360	root	1.3
361	root	1.1	if (fsaa)
362			{
363			SDL_GL_GetAttribute (SDL_GL_MULTISAMPLEBUFFERS, &value);
364			printf ("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
365			SDL_GL_GetAttribute (SDL_GL_MULTISAMPLESAMPLES, &value);
366			printf ("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
367			value);
368			}
369
370			/* Set the window manager title bar */
371	root	1.12	SDL_WM_SetCaption ("libgender rendering test", "gendertest");
372	root	1.1
373			/* Set the gamma for the window */
374			if (gamma != 0.0)
375	root	1.3	SDL_SetGamma (gamma, gamma, gamma);
376	root	1.1
377	root	1.17	// load a entity
378			for (int i = 0; i < 7; i++)
379			{
380			txtprt_parser p;
381	root	1.18	entity_transform *f = new entity_transform;
382	root	1.17	entity *e;
383			try
384			{
385			e = p.read ("test.blasc");
386			} catch (txtprt_i_exception & e)
387			{
388			cout << "ERR: " << e.msg << endl;
389			}
390			f->set (e);
391	root	1.21	f->update (gl_matrix::translation (vec3 (0, -1, -i*5)));
392	root	1.17	f->show ();
393			}
394
395	root	1.13	camera.orig.x = camera.orig.y = camera.orig.z = 0;
396	root	1.6	camera.p = point (0, 0, 10);
397			camera.d = vec3 (0, 0, -1);
398			camera.u = vec3 (0, 1, 0);
399			camera.w = w; camera.h = h;
400			camera.fov = 90;
401	root	1.1
402			glMatrixMode (GL_MODELVIEW);
403			glLoadIdentity ();
404
405	root	1.16	glEnable (GL_CULL_FACE);
406	root	1.1	glEnable (GL_DEPTH_TEST);
407	root	1.22	shInit();
408			shSetBackend("arb");
409			glEnable(GL_VERTEX_PROGRAM_ARB);
410			glEnable(GL_FRAGMENT_PROGRAM_ARB);
411
412			init_shaders();
413			shBind(vsh);
414			shBind(fsh);
415	root	1.11	glShadeModel (GL_SMOOTH);
416	root	1.6
417	root	1.3	glEnable (GL_LIGHTING);
418	root	1.9	//GLfloat lightc[4] = { 1, 0.1, 0.1, 1 };
419	root	1.6	//glLightf (GL_LIGHT0, GL_QUADRATIC_ATTENUATION);
420	root	1.9	//glLightfv (GL_LIGHT0, GL_DIFFUSE, lightc);
421	root	1.6	glEnable (GL_LIGHT0);
422	root	1.1
423			/* Loop until done. */
424			start_time = SDL_GetTicks ();
425			frames = 0;
426	root	1.16
427			draw_context c (camera);
428
429	root	1.1	while (!done)
430			{
431			GLenum gl_error;
432			char *sdl_error;
433			SDL_Event event;
434
435			glClear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
436
437	root	1.19	camera.p.x += (camera_velocity_factor * camera_velocity.x) * timer.diff;
438			camera.p.y += (camera_velocity_factor * camera_velocity.y) * timer.diff;
439			camera.p.z += (camera_velocity_factor * camera_velocity.z) * timer.diff;
440	root	1.18
441	root	1.6	GLfloat lightp[4];
442			lightp[0] = camera.p.x;
443			lightp[1] = camera.p.y;
444			lightp[2] = camera.p.z;
445			lightp[3] = 1;
446			glLightfv (GL_LIGHT0, GL_POSITION, lightp);
447
448	root	1.5	#if 0
449	root	1.3	static GLfloat ry;
450	root	1.13	ry += 0.001;
451			camera.d.x = cos (ry);
452			camera.d.z = sin (ry);
453			//camera.d.y = sin (ry * 0.1);
454	root	1.5	#endif
455	root	1.1
456	root	1.16	c.mode = draw_context::DEPTH;
457			camera.draw (c);
458	root	1.9	c.mode = draw_context::LIGHTED;
459	root	1.6	camera.draw (c);
460	root	1.1
461			SDL_GL_SwapBuffers ();
462	root	1.15	timer.frame ();
463	root	1.1
464			/* Check for error conditions. */
465			gl_error = glGetError ();
466
467			if (gl_error != GL_NO_ERROR)
468	root	1.3	fprintf (stderr, "testgl: OpenGL error: %d\n", gl_error);
469	root	1.1
470			sdl_error = SDL_GetError ();
471
472			if (sdl_error[0] != '\0')
473			{
474			fprintf (stderr, "testgl: SDL error '%s'\n", sdl_error);
475			SDL_ClearError ();
476			}
477
478			/* Allow the user to see what's happening */
479	root	1.9	//SDL_Delay (20);
480	root	1.1
481			/* Check if there's a pending event. */
482			while (SDL_PollEvent (&event))
483	root	1.18	done = HandleEvent (&event);
484	root	1.20
485	root	1.18
486	root	1.1	++frames;
487			}
488
489			/* Print out the frames per second */
490			this_time = SDL_GetTicks ();
491			if (this_time != start_time)
492			{
493			printf ("%2.2f FPS\n",
494			((float) frames / (this_time - start_time)) * 1000.0);
495			}
496
497			if (global_image)
498			{
499			SDL_FreeSurface (global_image);
500			global_image = NULL;
501			}
502			if (global_texture)
503			{
504			glDeleteTextures (1, &global_texture);
505			global_texture = 0;
506			}
507
508			/* Destroy our GL context, etc. */
509			SDL_Quit ();
510			return (0);
511			}
512
513			int
514			main (int argc, char *argv[])
515			{
516			int i, logo;
517			int numtests;
518			int bpp = 0;
519			int slowly;
520			float gamma = 0.0;
521			int noframe = 0;
522			int fsaa = 0;
523	root	1.4
524	root	1.1	logo = 0;
525			slowly = 0;
526			numtests = 1;
527			for (i = 1; argv[i]; ++i)
528			{
529			if (strcmp (argv[i], "-twice") == 0)
530			{
531			++numtests;
532			}
533			if (strcmp (argv[i], "-slow") == 0)
534			{
535			slowly = 1;
536			}
537			if (strcmp (argv[i], "-bpp") == 0)
538			{
539			bpp = atoi (argv[++i]);
540			}
541			if (strcmp (argv[i], "-gamma") == 0)
542			{
543			gamma = (float) atof (argv[++i]);
544			}
545			if (strcmp (argv[i], "-noframe") == 0)
546			{
547			noframe = 1;
548			}
549			if (strcmp (argv[i], "-fsaa") == 0)
550			{
551			++fsaa;
552			}
553			if (strncmp (argv[i], "-h", 2) == 0)
554			{
555			printf
556			("Usage: %s [-twice] [-logo] [-slow] [-bpp n] [-gamma n] [-noframe] [-fsaa]\n",
557			argv[0]);
558			exit (0);
559			}
560			}
561	root	1.17
562	root	1.1	for (i = 0; i < numtests; ++i)
563	root	1.17	RunGLTest (argc, argv, logo, slowly, bpp, gamma, noframe, fsaa);
564
565	root	1.1	return 0;
566			}