time lapse assembler error encoding file

#Time lapse assembler error encoding file software
#Time lapse assembler error encoding file code

I called this a 'pure' assembler because it does nothing more than assembling instructions.

#Time lapse assembler error encoding file code

The code is released under the LGPL, but the most important thing is that you just give me credit if you use my work. It briefly explains the syntax, the design, the things you could do with it and. There are very little comments in the code itself, so I wrote some external documentation. Of course it could be used to make a real assembler or even a compiler with it.īefore you start messing with my code, please read the 'Readme.txt' file.

#Time lapse assembler error encoding file software

Things like software vertex shaders could be handy so the game developer or maybe even the artists can simply plug-in new shaders every minute without starting Visual Studio. This has reduced the memory throughput, improves cache coherency and there can be less jumps in the inner loops. With a run-time assembler, the right algorithms can be put into one function, and the video processing can be done in less passes. Since they all need to read the data from system RAM, memory throughput could be a serious bottleneck, and per-pixel jumps are a bottleneck for the CPU. You often have lots of parameters for tweaking the quality, so it has to happen in separate passes. Of course, this is not only usable for software rendering freaks, but for any application where you need lots of flexibility and performance in a tight inner loop. That's why I called the project 'SoftWire', because it's almost like rewiring your CPU. Pixel and vertex shaders are also easy now, and the powerful x86 instruction set allows an even greater freedom than any hardware accelerated shader. Things like loop unrolling would be trivial. It won't be as fast as optimizing every function separately, but it opens many doors to an impressive software engine with a rich set of features.

Now I can collect all information about the render state and 'compose' a function from a few snippets of assembly code. So this is why I wrote this run-time assembler. For every situation, you can generate the exact code you need. The solution is conditional compilation at run-time. So generally, speed and versatility don't go together. There are really thousands of possibilities that would all need a new function. I recently started using SSE and now I need to write every function again just to change a few instructions. But that takes ages and when you change one thing they all have to change. I could also write every possible scanline function as a separate, optimized function. A mispredicted jump on a Pentium 4 takes dozens of clock cycles. To have the same possibilities in a software engine, I could use a few jump instructions, but this drastically decreases performance when they're used in the inner loops. The newest generation of cards can even do per-pixel operation with a small shader program. Graphics cards can do hundreds of combinations of filtering, shading, sampling, blending and lots more. This is not a big problem when using optimized assembly, but it does pose another problem. Since I am a true software 3D rendering freak, every clock cycle counts. At some occasions, however, even that can be too slow. When you strive for the maximum performance of the software running on your CPU, you often need to use assembly. This section of the archives stores flipcode's complete Developer Toolbox collection,įeaturing a variety of mini-articles and source code contributions from our readers.