Function webrender::renderer::upload::skip_staging_buffer

fn skip_staging_buffer<'a>(
    device: &mut Device,
    staging_texture_pool: &mut UploadTexturePool,
    update_rect: DeviceIntRect,
    stride: Option<i32>,
    data: Arc<Vec<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,
)

Take this code path instead of copying into a staging CPU buffer when the image we would copy is large enough that it’s unlikely anything else would fit in the buffer, therefore we might as well copy directly from the source image’s pixels.