void Texture::loadFromSurface(SDL_Surface* surface)
{
SDL_Surface* resizedSurface = NULL;
SDL_Rect area;
if (surface == NULL)
{
return;
}
int newWidth = NearestPowerOf2(_width);
int newHeight = NearestPowerOf2(_height);
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
SDL_PixelFormatEnumToMasks(
SDL_PIXELFORMAT_ABGR8888, &bpp,
&Rmask, &Gmask, &Bmask, &Amask
);
resizedSurface = SDL_CreateRGBSurface(0, newWidth, newHeight, bpp,
Rmask, Gmask, Bmask, Amask
);
area.x = 0;
area.y = 0;
area.w = surface->w;
area.h = surface->h;
SDL_SetSurfaceAlphaMod( surface, 0xFF );
SDL_SetSurfaceBlendMode( surface, SDL_BLENDMODE_NONE );
SDL_BlitSurface(surface, &area, resizedSurface, &area);
glBindTexture(GL_TEXTURE_2D, _textureID);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, resizedSurface->w, resizedSurface->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, resizedSurface->pixels);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
_textureWidth = resizedSurface->w;
_textureHeight = resizedSurface->h;
SDL_FreeSurface(resizedSurface);
}
void QTrkComputedConfig::Update()
{
int roi = width / 2;
zlut_maxradius = roi*zlut_roi_coverage;
float zlut_perimeter = 2*3.141593f*zlut_maxradius;
zlut_angularsteps = zlut_perimeter*zlut_angular_coverage;
zlut_radialsteps = (zlut_maxradius-zlut_minradius)*zlut_radial_coverage;
qi_maxradius = roi*qi_roi_coverage;
float qi_perimeter = 2*3.141593f*qi_maxradius;
qi_angstepspq = qi_perimeter*qi_angular_coverage/4;
qi_radialsteps = (qi_maxradius-qi_minradius)*qi_radial_coverage;
qi_radialsteps = NearestPowerOf2(qi_radialsteps);
}
