OffScreenSurface.cc

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#include "OffScreenSurface.hh"
#include "VisibleSurface.hh"
#include "GLUtil.hh"
 
namespace openmsx {
 
OffScreenSurface::OffScreenSurface(const OutputSurface& output)
        : fboTex(true) // enable interpolation   TODO why?
{
        calculateViewPort(output.getLogicalSize(), output.getPhysicalSize());
        auto [w, h] = getPhysicalSize();
        fboTex.bind();
        glTexImage2D(GL_TEXTURE_2D,    // target
                     0,                // level
                     GL_RGB,           // internal format
                     w,                // width
                     h,                // height
                     0,                // border
                     GL_RGB,           // format
                     GL_UNSIGNED_BYTE, // type
                     nullptr);         // data
        fbo = gl::FrameBufferObject(fboTex);
        fbo.push();
}
 
void OffScreenSurface::saveScreenshot(const std::string& filename)
{
        VisibleSurface::saveScreenshotGL(*this, filename);
}
 
} // namespace openmsx