Microsoft Word – COMP8551 Assembly Lab I.docx
COMP 8551
Assembly Language Lab I Exercises
1. Review the code samples provided. Make sure you are able to see disassembled code in Visual
Studio, and understand basic x86 instructions.
2. Make sure you understand and can reproduce the example shown in class of functions with
arguments passed by value and reference.
3. Write a windows application that reads in a colour image and a “kernel” image. The kernel
image should be much smaller (e.g., 1/10th the size of the original image). The user should be
provided with a simple user interface (in a window) to specify the two image files and a blending
factor. The blending factor is a value between 0 and 1 (or 0% and 100%) that determines how
the kernel image is blended with the original image, according to the following:
pBlendImg[i][j] = pOrigImg[i][j] * blendFac + pKernelImg[i][j] * (1 –
blendFac);
where pOrigImg is the original image, pKernelImg is the kernel image, pBlendImg is the
resulting image, and blendFac is the blending factor. The code should use a simple for loop to
iterate over each pixel in pOrigImg. The program should provide the user with a button to
start the blending, then display the original, kernel and blended images, each in its own window.
The total time taken to blend the images should be reported to the user where they specified
the input parameters (filenames, blending factor, etc.).
4. Write two additional functions to perform the blending, providing the user with the option to
select either of these methods over the two you have already provided above. The first function
should use MMX intrinsics (see http://concatenative.org/wiki/view/SSE, and the tutorial and
sample code at http://www.softkam.ro/index.php?pid=alphablend). The second function should
use SSE intrinsics. The user should be given the ability to choose from either of these methods,
or the two above.