Blender Git Commits

EEVEE: Lookdev: Add back lighting support

This does not include reference spheres rendering.

The approach is a bit different than before.
Now we use a `bNodeTree` to control the rendering of lookdev. This
generates a `GPUMaterial` that is stored per `Instance`. This way
rendering lookdev is just updating the temp light cache using this
material as world material. Removing the use of custom shader.

This introduces a small hack in order to bind the studiolight hdri after
the nodetree glsl parsing.

The background display however is still using a custom shader in order
to sample the world cubemap with different roughness.

The view space option of the studiolight is now faster by using a
transform before shading instead of rebaking the lightprobe constantly.
This should not have any particular impact on render time.

EEVEE: Light: Fix culling in orthographic view

EEVEE: LightCache: Fix broken visibility sampling

EEVEE: LightCache: Fix broken light bounce

EEVEE: Fix world probe rendering objects

Was leftover of a test.

EEVEE: GBuffer: Fix undefined behavior

When evaluating surfaces, the deferred passes needs to sample the
depth buffer. But it also test against the stancil buffer.

Moreover the sampler needs to be a 2D sampler which is not the case
for cubemaps and texture2Darrays.

To overcome this we simply copy the gbuffer depth to another
temp texture using framebuffer blitting.

EEVEE: Remove light specular during baking & fix bounce light

EEVEE: LightProbe: Fix grid display and deduplicate code

EEVEE: LightProbe: Fix light cache display visibility without overlays

EEVEE: LightProbe: Fix wrong shading on other cube faces

Use modified viewmat instead of modified winmat. Too much code
assume conventional winmat.

EEVEE: LightProbe: Fix level bias and visibility filtering

EEVEE: Fix irradiance baking sample order

EEVEE: Fix irradiance smoothing wrong

EEVEE: LightCache: Port baking

Some things differs from old implementation.
- Object visibility is filtered correctly without using a visibility
callback (which is to be removed).

The implementation is also more high level using less low level tricks.

A dedicated LightProbeView is created for each lightprobe cubeface to
render using all pipeline (deferred and forward).

There is still a few things not working.

EEVEE: LightCache: Port back cache Display

Nothing significantly different appart from codestyle.

BLI: float3: add division operator between 2 float3

EEVEE: Fix background transparent

Alpha of main output is transparency and not opacity.

EEVEE: LightProbe: Finish loading and rendering of lightcache

Starting to port lightcache.c to c++.

EEVEE: Lightprobe: Add back lightprobe rendering support for world.

Only world probe is supported for now.

The new implementation diverge from the original by randomly
selecting one lightprobe instead of sampling them all.
This speeds-up rendering a bit.

EEVEE: Fix crash cause by world material without attributes