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IMAGE: Move bitmap writing code out of OpenGLGraphicsManager

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Cameron Cawley 2019-03-01 00:15:43 +00:00 • committed by Bastien Bouclet
parent fd1162cb71
commit 8ae17b481a
3 changed files with 68 additions and 30 deletions
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34
backends/graphics/opengl/opengl-graphics.cpp
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@ -46,6 +46,8 @@
#ifdef USE_PNG
#include "image/png.h"
#else
#include "image/bmp.h"
#endif
namespace OpenGL {
@ -1212,41 +1214,13 @@ bool OpenGLGraphicsManager::saveScreenshot(const Common::String &filename) const
pixels.resize(lineSize * height);
GL_CALL(glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, &pixels.front()));
#ifdef USE_PNG
const Graphics::PixelFormat format(3, 8, 8, 8, 0, 16, 8, 0, 0);
Graphics::Surface data;
data.init(width, height, lineSize, &pixels.front(), format);
#ifdef USE_PNG
return Image::writePNG(out, data, true);
#else
// BMP stores as BGR. Since we can't assume that GL_BGR is supported we
// will swap the components from the RGB we read to BGR on our own.
for (uint y = height; y-- > 0;) {
uint8 *line = &pixels.front() + y * lineSize;
for (uint x = width; x > 0; --x, line += 3) {
SWAP(line[0], line[2]);
}
}
out.writeByte('B');
out.writeByte('M');
out.writeUint32LE(height * lineSize + 54);
out.writeUint32LE(0);
out.writeUint32LE(54);
out.writeUint32LE(40);
out.writeUint32LE(width);
out.writeUint32LE(height);
out.writeUint16LE(1);
out.writeUint16LE(24);
out.writeUint32LE(0);
out.writeUint32LE(0);
out.writeUint32LE(0);
out.writeUint32LE(0);
out.writeUint32LE(0);
out.writeUint32LE(0);
out.write(&pixels.front(), pixels.size());
return true;
return Image::writeBMP(out, data, true);
#endif
}