v0.6.2

New in this version:

• Deterministic renders. If you render an image twice with the same settings, the resulting image will match perfectly.
• Rendertime estimates are now computed on the main thread. Much more reliable, no more race conditions.
• Improved render status now shows completion percentage, average microseconds per ray, estimate until finished and samples per second. This status updates ~4 times a second.
• All memory leaks are fixed as of this release.
• Heaps of internal refactoring to ease future development.
• Added support for loading textures from the following formats: JPEG, BMP, TGA, PIC and PNM (f7106e1)
• Dramatically reduce KD-tree construction time. It no longer has an O(n^2) end condition (cb59980)
• Write render information to PNG tEXt chunks. (You can observe with imagemagic: identify -verbose output/rendered_0000.png)
• Timers now use microsecond precision.
• Start implementing a new public API in src/c-ray.h. This is still very much WIP, but it is starting to look pretty good.
• Fix over a hundred warnings, we now build with -Wextra where applicable.
• Reduce heap allocations where they were not needed.
• Fix bug where all normals everywhere were inverted, leading to some subtle bugs. (d78c862)
• Re-implement smooth shading.
• Add assertion macros, and assert in a few places where it makes sense.
• The scene loader now has a sane defaults system, so you can omit settings you don't care about.
• Meshes can now emit light. (0a26ea7)
• Meshes can now have roughness (9c9bc64)
• Meshes can now have normal maps (531ff80)
• You can now set focal length and aperture in camera preferences to have depth-of-field (00088d9)
• Disable -ffast-math, it was causing floating point errors that resulted in random white dots. (2380e7d)
• Fix the BMP encoder so it no longer has black lines.