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);
}
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;
}