Blender Git Loki

PyAPI: Add gpu.matrix API

Merge branch 'master' into blender2.8

PyAPI: expose matrix parsing function

Correct error in gawain wrapper for non-gcc compilers

Audaspace: cmake fixes, lowering to 3.0 minimum required.

Cleanup: remove unneeded include

Complicated using GPU_matrix from PyAPI.

Eevee: Bloom: Add Bloom Color

Moar artistic control yay!

Eevee: Bloom: Add Clamp setting

It's purpose is to limit the amount of light that spread across the screen.

Not entierly sure if it's very usefull, but it sure help to avoid to drown the screen in bloom.

Eevee: Fix problem with GPU_texture_generate_mipmap

This function was called to recreate the lower mip level of the probe texture. But this is not it's usage and it introduced a stall.

This patch add cubemap mipmap level regeneration in eevee_effects.c

Fix T52443: Cycles OpenCL build error after recent mesh lights changes.

CMake: Boost no longer needed for Audaspace references either

Cycles tests: add light type tests.

Cycles tests: make page less wide, use relative URLs for serving through http.

Eevee: Convert metallic nodes into princinpled nodes

And wipe metallic out of the map.

Swap Eevee material output with (Cycles) Material Output

Since we started supporting the (Cycles) Material Output old files
stopped working. There is no reason to keep the original Eevee material
otuput anymore.

It includes doversion for old files.

Expose Transparency BSDF for Eevee UI

Uniform Buffer Objects: More complete padding solution

Move floats around when needed to accomodate vec3 arrays efficiently.

With this we use slightly less memory when possible. Basically vec3s are not
treated as vec4 unless we have no float to use for padding).

Reviewers: fclem, sergey

Differential Revision: https://developer.blender.org/D2800

Eevee: Rework GTAO

This includes big improvement:
- The horizon search is decoupled from the BSDF evaluation. This means using multiple BSDF nodes have a much lower impact when enbaling AO.
- The horizon search is optimized by splitting the search into 4 corners searching similar directions to help which GPU cache coherence.
- The AO options are now uniforms and do not trigger shader recompilation (aka. freeze UI).
- Include a quality slider similar to the SSR one.
- Add a switch for disabling bounce light approximation.
- Fix problem with Bent Normals when occlusion get very dark.
- Add a denoise option to that takes the neighbors pixel values via glsl derivatives. This reduces noise but exhibit 2x2 blocky artifacts.

The downside : Separating the horizon search uses more memory (~3MB for each samples on HD viewport). We could lower the bit depth to 4bit per horizon but it produce noticeable banding (might be fixed with some dithering).

Eevee: Add some utils functions

Eevee: MinmaxZ: Avoid unecessary conversions.