February 12, 2010

Holy crap

I must have accidentally imbued my to-do-list with rabbits or something, because it just gets bigger and bigger.

- _bucketsort cRBT_list isn't working because the getnear function doesn't differentiate between a "before" and an "after."
○ Implement checking for this so it can fail appropariately
○ Figure out if it needs to be a before or an after for the actual getnear call in the alloc function
- Do stress tests on the memory allocator and make sure it doesn't fail under any circumstances
- Do a test on the string pool allocator being inside the DLL and try to figure out why the hell the allocator gets initialized like 6 times.
- Finalize the string pool for usage
- Finish the last bit of the string table

- Build kd-tree implementation.
○ Each layer swaps between x and y and has a value that specifies where to make the split.
○ A balance integer is required so the tree can keep itself roughly balanced, but this should be athreshold difference of about 5 or so to prevent a single object from constantly resizing the tree.
○ Each layer holds a list of renderables of that depth. A renderable's total radius must fit entirely inside the branch in question, or if it has no rotation, do a simple bounds check.
○ Most of the work is done when a renderable is inserted, because this is when the bounds checks get made
○ When a renderable moves, it just checks its nearby nodes for a needed crossover.
○ When a renderable changes dimension, it may need to be moved to a higher level.
§ Note that you may be able to combine the scale and movement checks into a single bounds check
- Remove the radial check from anything using the kd-tree, but cImageZ doesn't use the kd-tree so keep the radial check for that one.
- Because use of the kd-tree is optional, you need a way to standardize its use. Some kind of function somewhere saying "Add to render queue" or "add to kd-tree" or something.
- Swap the render buffer to use an additive memory allocator
○ You will need to create a separate render buffer to maintain a list of renderables that don't use the kd-tree.
○ To do this properly you'll want to create a tree merge function with a mass allocation, which will allow for the transfer of memory in one batch per-frame, which should be crazy fast.
○ Do this first, then start adding in stuff from the kd-tree.
- Do stress testing on the kd-tree
○ Make line renders for the tree (that'll be a lot of fun to watch)
○ Ensure optimal performance on low and high density images.
§ Also check the resulting performance hit on a single image

Implement front-to-back transparency blending
- First, undo all that stuff you just did.
- The first thing that needs to be working is the multi-texture technique.
- Then, you need to make sure the blending is there, and that the backbuffer has an alpha (Should be done already)
- At the end of the render, reset the alpha channel to opaque
- Now you should be able to see the results. Ensure the blending functions properly under high tranparency complexities and adjust it as necessary
- Once the blending is working perfectly, enable the stencil buffer and do a write when the pixel is opaque (or in the case of this algorithm, completely transparent.
- Now extend this to multi-texture scenarios
- Then, ensure that it still works with the lighting technique.
○ Later on you can figure out if the alternate lighting method is still viable
- Done properly, the normalmaps should automatically use this technique as well. You may need to tweak that a bit though

- Go back to implementing the lighting system
○ Ensure blending functions correctly
○ Implement shadows (No penumbra! but still use the same circle calculation so your getting the correct umbra)
○ Calculate soft shadow points
○ Build soft shadow triangles
○ put in option to have object either be affected by light or not (Do it as a flag)
○ Put in coronas
○ put in option to have light cast shadows instead of be occluded. This is used for things like the sun, where color is ignored.
○ Optimize
○ Implement arc culling
○ ensure rect culling is working
○ Ensure backup textures allow it to work on the laptop

- Implement new text renderer
- Do C# interop

February 9, 2010

No More ECON

Fuck economics. I studied dutifully for that test and almost everyone in the class was still confused over badly written, misleading questions. In math, either you are right or you are wrong. In philosophy, either you make a convincing argument, or you don't. In economics, either you are wrong, or you are very, very wrong. I swear to god there is no "right" in economics, there are only varying degrees of wrongness and you must strive to be as not wrong as possible in order to pass the stupid class. Either that or you need to be telepathic.

I want my fucking programming classes, damn it.