As a general rule, PNG is never worse, and often better than GIF because of superior compression. There might be some edge cases where GIF is slightly better (because the PNG format may have a slightly larger overhead from metadata) but it’s really not worth the worry. It may just be the tools I’m using, … Read more
There are a lot of factors to optimizing 3D rendering. usually there are 4 bottlenecks: CPU (creating vertices, APU calls, everything else) Bus (CPU<->GPU transfer) Vertex (vertex shader over fixed function pipeline execution) Pixel (fill, fragment shader execution and rops) Your test is giving skewed results because you have a lot of CPU (and bus) … Read more
I once implemented a text output window from scratch – I wanted one that works like the Output window in Visual Studio. It turned out to be more complicated than I expected, and that was without any input capabilities. Unfortunately the code is in C++ and belongs to a former employer, so I can’t share … Read more
The selection of a particular filter for image processing is something of a black art, because the main criterion for judging the result is subjective: in computer graphics, the ultimate question is almost always: “does it look good?”. There are a lot of good filters out there, and the choice between the best frequently comes … Read more
John Resig’s port of the Processing library to Javascript: http://ejohn.org/blog/processingjs
SurfaceFlinger is not what draws your window. It allocates a frame buffer for your window, which the framework running in your application draws directly to without interacting with SurfaceFlinger. The only interaction SurfaceFlinger is involved with when you draw your window is to composite the final new frame buffer to the screen once you are … Read more
Take another Bresenham loop and use it to modify the start and end position of original line in rectangular direction. Problem is to efficently find the right starting point and not to draw any pixel twice (or skip a pixel) while drawing next line. Working and tested C code is available from Github C code … Read more