void WindowRendererSupportGLWin32::setPixelFormat(const DeviceContext* deviceContext, const PixelFormat& pixelFormat) const
	{
		HDC hdc = static_cast<const DeviceContextWin32*>(deviceContext)->getHDC();

		ushort colourBits = pixelFormat.getRedBits() + pixelFormat.getGreenBits() + pixelFormat.getBlueBits();
		ushort alphaBits = pixelFormat.getAlphaBits();
		ushort depthBits = 24;
		ushort stencilBits = 8;
		ushort samples = 4;

		PIXELFORMATDESCRIPTOR pfd;
		memset(&pfd, 0, sizeof(pfd));
		pfd.nSize = sizeof(pfd);
		pfd.nVersion = 1;
		pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
		pfd.iPixelType = PFD_TYPE_RGBA;
		pfd.cColorBits = (BYTE)colourBits;
		pfd.cAlphaBits = (BYTE)alphaBits;
		pfd.cDepthBits = (BYTE)depthBits;
		pfd.cStencilBits = (BYTE)stencilBits;

		int format = 0;

		if(mHasMultisample)
		{
			vector<int> attribList;
			attribList.push_back(WGL_DRAW_TO_WINDOW_ARB);	attribList.push_back(GL_TRUE);
			attribList.push_back(WGL_SUPPORT_OPENGL_ARB);	attribList.push_back(GL_TRUE);
			attribList.push_back(WGL_DOUBLE_BUFFER_ARB);	attribList.push_back(GL_TRUE);
			attribList.push_back(WGL_SAMPLE_BUFFERS_ARB);	attribList.push_back(GL_TRUE);
			attribList.push_back(WGL_ACCELERATION_ARB);		attribList.push_back(WGL_FULL_ACCELERATION_ARB);
			attribList.push_back(WGL_COLOR_BITS_ARB);		attribList.push_back(colourBits);
			attribList.push_back(WGL_ALPHA_BITS_ARB);		attribList.push_back(alphaBits);
			attribList.push_back(WGL_DEPTH_BITS_ARB);		attribList.push_back(depthBits);
			attribList.push_back(WGL_STENCIL_BITS_ARB);		attribList.push_back(stencilBits);
			attribList.push_back(WGL_SAMPLES_ARB);			attribList.push_back(samples);

			if(mHasHardwareGamma)
			{
				attribList.push_back(WGL_FRAMEBUFFER_SRGB_CAPABLE_EXT);	attribList.push_back(GL_TRUE);
			}

			attribList.push_back(0);

			UINT nformats;
			wglChoosePixelFormatARB(hdc, &(attribList[0]), nullptr, 1, &format, &nformats);
		}
		else
		{
			format = ChoosePixelFormat(hdc, &pfd);
		}

		SetPixelFormat(hdc, format, &pfd);
	}
Пример #2
0
bool Image::read(Stream stream)
{
    BytesArray mem;

    mem = stream.process();
    if (!stream.ok())
        return false;

    FIMEMORY* fimem = FreeImage_OpenMemory(mem.raw(), mem.size());
    if (!fimem)
        return false;

    FREE_IMAGE_FORMAT fiformat = FreeImage_GetFileTypeFromMemory(fimem);
    FIBITMAP* fibit = FreeImage_LoadFromMemory(fiformat, fimem);
    FreeImage_CloseMemory(fimem);
    if (!fibit)
        return false;

    //FIBITMAP* fitmp = fibit;
    //fibit = FreeImage_ConvertTo32Bits(fitmp);
    //FreeImage_Unload(fitmp);

    uint64 red_mask = FreeImage_GetRedMask(fibit);
    uint64 green_mask = FreeImage_GetGreenMask(fibit);
    uint64 blue_mask = FreeImage_GetBlueMask(fibit);
    uint64 alpha_mask = 0;
    

    PixelFormat tmpformat;
    tmpformat.setDepthBits(0);
    tmpformat.setStencilBits(0);
    tmpformat.setColorBitsFromMasks(&red_mask, &green_mask, &blue_mask, &alpha_mask);

    if (FreeImage_GetBPP(fibit) != tmpformat.bitsPerPixel())
    {
        alpha_mask = ~(uint32)(red_mask | green_mask | blue_mask);
        tmpformat.setColorBitsFromMasks(&red_mask, &green_mask, &blue_mask, &alpha_mask);
    }

    format = TransferFormat(tmpformat.getRedBits(), tmpformat.getGreenBits(), tmpformat.getBlueBits(), tmpformat.getAlphaBits());

    MIRROR_ASSERT(FreeImage_GetBPP(fibit) == format.bitsPerPixel(), "Conversion from FreeImage bitmap to Mirror bitmap failed!\nBits per pixel conversion from "
        "FreeImage color masks probably returned bad bits-per-channel values respectivly for red, green and blue channel, as"
        " stored inside PixelFormat structure - see PixelFormat::setColorBitsFromMasks for calculations!");

    my_size = { FreeImage_GetWidth(fibit), FreeImage_GetHeight(fibit) };
    uint32 req_bits = my_size.width()*my_size.height()*format.bitsPerPixel();
    pixels.resize(PixelFormat::bitsToFullBytes(req_bits));

    const uint32 pitch = FreeImage_GetPitch(fibit);
    const uint32 lineSize = FreeImage_GetLine(fibit);

    uint32 pixidx = 0;
    BYTE* line = FreeImage_GetBits(fibit);
    for (uint32 y = 0; y < my_size.height(); ++y, line += pitch)         
        for (BYTE* pixel = line; pixel < line + lineSize; pixel += format.bytesPerPixel())
        {
            pixels[pixidx++] = pixel[2]; //red
            pixels[pixidx++] = pixel[1]; //green
            pixels[pixidx++] = pixel[0]; //blue
            if (alpha_mask)
                pixels[pixidx++] = pixel[3]; //alpha
        }

    ////transfer pixels from FreeImage to our buffer as raw bits, should be in RGBA order thanks to our new color masks
    //FreeImage_ConvertToRawBits(pixels.raw(), fibit, format.bitsPerPixel()*my_size.width(), format.bitsPerPixel(), 0, 0, 0, TRUE);
    FreeImage_Unload(fibit);
    return true;
}