void Surface::Set(const void* pixels, unsigned int width, unsigned int height, unsigned char bytes_per_pixel, bool amask0)
{
FreeSurface(*this);
switch(bytes_per_pixel)
{
case 1:
CreateSurface(width, height, 8, false);
LoadPalette();
Lock();
std::memcpy(surface->pixels, pixels, width * height);
Unlock();
break;
default:
{
u32 rmask, gmask, bmask, amask;
GetRGBAMask(bytes_per_pixel * 8, rmask, gmask, bmask, amask);
surface = SDL_CreateRGBSurfaceFrom(const_cast<void *>(pixels), width, height, 8 * bytes_per_pixel, width * bytes_per_pixel,
rmask, gmask, bmask, (amask0 ? amask : 0));
}
break;
}
if(!surface)
Error::Except(__FUNCTION__, SDL_GetError());
}
Surface::Surface(const void* pixels, u32 width, u32 height, u32 bytes_per_pixel /* 1, 2, 3, 4 */, bool amask) : surface(NULL)
{
SurfaceFormat fm = GetRGBAMask(8 * bytes_per_pixel);
if(8 == fm.depth)
{
#if SDL_VERSION_ATLEAST(2, 0, 0)
surface = SDL_CreateRGBSurface(0, width, height, fm.depth, fm.rmask, fm.gmask, fm.bmask, (amask ? fm.amask : 0));
#else
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, fm.depth, fm.rmask, fm.gmask, fm.bmask, (amask ? fm.amask : 0));
#endif
}
else
{
surface = SDL_CreateRGBSurfaceFrom(const_cast<void *>(pixels), width, height, fm.depth, width * bytes_per_pixel,
fm.rmask, fm.gmask, fm.bmask, amask ? fm.amask : 0);
#if SDL_VERSION_ATLEAST(2, 0, 0)
SDL_SetSurfaceBlendMode(surface, SDL_BLENDMODE_NONE);
#endif
}
if(!surface)
Error::Except(__FUNCTION__, SDL_GetError());
if(8 == fm.depth)
{
SetPalette();
Lock();
std::memcpy(surface->pixels, pixels, width * height);
Unlock();
}
}
/* create new surface */
void Surface::CreateSurface(u16 sw, u16 sh, u8 bpp, bool amask0)
{
u32 rmask, gmask, bmask, amask;
GetRGBAMask(bpp, rmask, gmask, bmask, amask);
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, sw, sh, bpp, rmask, gmask, bmask, (amask0 ? amask : 0));
if(!surface)
Error::Except(__FUNCTION__, SDL_GetError());
}
void Surface::Set(u32 sw, u32 sh, u32 bpp /* bpp: 8, 16, 24, 32 */, bool amask)
{
if(bpp == 8)
bpp = 32;
SurfaceFormat fm = GetRGBAMask(bpp);
if(8 == fm.depth || ! amask) fm.amask = 0;
Set(sw, sh, fm);
}