art with code

2009-03-11

Still alive

No, I didn't manage to crash or hang my GPU with the GLSL tests. Which may speak more for my test-writing ability, but there you have it.

Though I did manage to crash the Canvas 3D extension by feeding it a negative vertex attribute id as it was using it to do some cache array indexing (int id, only checked for id >= arrayLength.) Got a hacky copy-pasted-from-Context2D.cpp SOP checking going and passing tests for it. Trying to #include "nsHTMLVideoElement.cpp" duly broke the build, so no video element texImage2DHTML.

Remaining things in my shortlist of tests to write are: vertexAttribPointer, vertexAttrib, uniform[fi], bufferData, bufferSubData. Then it's time for secondary tests (methods that have custom implementations and especially getters and things that take indices.)

My testing priority heuristic goes something like this: Deals with web data => SOP bugs. Array indexing => segfaults. Segfaults => you're pwned, dood. State => bugs. Allocation => memleaks. New code => new bugs. Complex logic => complex bugs. No code => maybe no bugs, who knows.

So code I like pushes everything through well-trodden paths with the least amount of new code and in the simplest way possible. Preferably without array indexing, heap allocation, or state of any kind.
Post a Comment

Blog Archive

About Me

My photo

Built art installations, web sites, graphics libraries, web browsers, mobile apps, desktop apps, media player themes, many nutty prototypes, much bad code, much bad art.

Have freelanced for Verizon, Google, Mozilla, Warner Bros, Sony Pictures, Yahoo!, Microsoft, Valve Software, TDK Electronics.

Ex-Chrome Developer Relations.