openmw/components/sdlutil/imagetosurface.cpp
Bret Curtis ef85b1393a Merge pull request #1740 from nikolaykasyanov/software-cursor-decompression
Decompress cursors using SDL software renderer on Mac or if OSG >= 3.5.8 or if OPENMW_DECOMPRESS_TEXTURES is set
2018-06-20 17:28:12 +02:00

28 lines
917 B
C++

#include "imagetosurface.hpp"
#include <osg/Image>
#include <SDL_surface.h>
namespace SDLUtil
{
SurfaceUniquePtr imageToSurface(osg::Image *image, bool flip)
{
int width = image->s();
int height = image->t();
SDL_Surface* surface = SDL_CreateRGBSurface(0, width, height, 32, 0xFF000000,0x00FF0000,0x0000FF00,0x000000FF);
for(int x = 0; x < width; ++x)
for(int y = 0; y < height; ++y)
{
osg::Vec4f clr = image->getColor(x, flip ? ((height-1)-y) : y);
int bpp = surface->format->BytesPerPixel;
Uint8 *p = (Uint8 *)surface->pixels + y * surface->pitch + x * bpp;
*(Uint32*)(p) = SDL_MapRGBA(surface->format, static_cast<Uint8>(clr.r() * 255),
static_cast<Uint8>(clr.g() * 255), static_cast<Uint8>(clr.b() * 255), static_cast<Uint8>(clr.a() * 255));
}
return SurfaceUniquePtr(surface, SDL_FreeSurface);
}
}