Function ByteBuffer GenerateImageBuffer

deps/LLGL/sources/Core/ImageFlags.cpp:805–837

}

LLGL_EXPORT ByteBuffer GenerateImageBuffer(
    ImageFormat         format,
    DataType            dataType,
    std::size_t         imageSize,
    const ColorRGBAd&   fillColor)
{
    /* Convert fill color data type */
    VariantColor fillColor0 { UninitializeTag{} };
    VariantBuffer fillBuffer0 { &fillColor0 };

    WriteNormalizedTypedVariant(dataType, fillBuffer0, 0, fillColor.r);
    WriteNormalizedTypedVariant(dataType, fillBuffer0, 1, fillColor.g);
    WriteNormalizedTypedVariant(dataType, fillBuffer0, 2, fillColor.b);
    WriteNormalizedTypedVariant(dataType, fillBuffer0, 3, fillColor.a);

    /* Convert fill color format */
    VariantColor fillColor1 { UninitializeTag{} };
    VariantBuffer fillBuffer1 { &fillColor1 };
    VariantConstBuffer fillBuffer2 { fillBuffer0.raw };

    ReadRGBAFormattedVariant(ImageFormat::RGBA, dataType, fillBuffer2, 0, fillColor1);
    WriteRGBAFormattedVariant(format, dataType, fillBuffer1, 0, fillColor1);

    /* Allocate image buffer */
    const auto bytesPerPixel = DataTypeSize(dataType) * ImageFormatSize(format);
    auto imageBuffer = MakeUniqueArray<char>(bytesPerPixel * imageSize);

    /* Initialize image buffer with fill color */
    for (std::size_t i = 0; i < imageSize; ++i)
        ::memcpy(imageBuffer.get() + bytesPerPixel * i, fillBuffer1.raw, bytesPerPixel);

    return imageBuffer;
}

LLGL_EXPORT ByteBuffer GenerateEmptyByteBuffer(std::size_t bufferSize, bool initialize)
{