(src_buf[uintOffset] >> bitShift) & 0xff;
}

fn loadU16AsU32(byteOffset: u32) -> u32 {
    let firstHalf = loadU8AsU32(byteOffset);
    let secondHalf = loadU8AsU32(byteOffset + 1);
    return firstHalf | (secondHalf << 8);
}

// byteOffset is expected to be aligned to 4.
fn loadU32(byteOffset: u32) -> u32 {
    let uintOffset = byteOffset >> 2;
    return src_buf[uintOffset];
}

// byteOffset is expected to be aligned to 4.
fn loadTwoU32s(byteOffset: u32) -> vec2u {
    return vec2u(loadU32(byteOffset), loadU32(byteOffset + 4));
}

@fragment fn blit_buffer_to_texture(
    @builtin(position) screen_position : vec4f
) -> @location(0) vec4f {
    let iposition = vec2u(screen_position.xy) - params.dstOrigin;

    let srcOffset = params.srcOffset + iposition.x * kPixelSize + iposition.y * params.bytesPerRow;

    return unpackData(srcOffset);
}