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