Function webrender::renderer::upload::copy_into_staging_buffer

fn copy_into_staging_buffer<'a>(
    device: &mut Device,
    uploader: &mut TextureUploader<'a>,
    staging_texture_pool: &mut UploadTexturePool,
    update_rect: DeviceIntRect,
    update_stride: Option<i32>,
    data: &[u8],
    dest_texture_id: CacheTextureId,
    texture: &Texture,
    batch_upload_buffers: &mut FastHashMap<ImageFormat, (GuillotineAllocator, Vec<BatchUploadBuffer<'a>>)>,
    batch_upload_textures: &mut Vec<Texture>,
    batch_upload_copies: &mut Vec<BatchUploadCopy>,
    stats: &mut UploadStats
)

Copy an item into a batched upload staging buffer.