Commit Graph

30 Commits

Author SHA1 Message Date
BlueCube3310 a89f4fa5a9 LightmapGI: Pack L1 SH coefficients for directional lightmaps 2024-09-05 22:46:58 +02:00
Rémi Verschelde 68d188d521
Merge pull request #95888 from clayjohn/Lightmap-SH-coefficients
Use correct lightmap coefficients to ensure that the directional lightmap mode looks correct
2024-08-25 20:18:18 +02:00
clayjohn f4ccba7508 Use correct lightmap coefficients to ensure that the directional lightmap mode looks correct
Also remove the metallic option from directional lightmap as it is guaranteed to return negative numbers in many cases
2024-08-21 10:24:32 -07:00
clayjohn 1521e49c23 Antialias direct light samples in LightmapperRD
Additionally use Vogel disk to enhance soft shadow quality.
2024-08-19 17:54:55 -07:00
landervr e7bd1b0673 Add denoiser range property for LightmapGI 2024-05-15 08:26:04 +02:00
Dario cbc929edf0 Do not use a linear sampler on lightmapper when retrieving grid data. 2024-01-26 11:36:21 -03:00
Juan Linietsky caef2be758 Tiny fix for lightmapper DDA
- Ensures only one axis advances at a time
- This fixes extremely corner cases where the DDA may skip over geometry
2024-01-10 10:39:56 +01:00
Dario 47214ea9f5 Optimize lightmapper using triangle clusters on the acceleration structure.
Add an additional layer of indirection to the grid used by the lightmapper to store fixed-size triangle clusters. Greatly speeds up baking times on scenes with high triangle density, as the clusters will help to avoid unnecessary checks when the triangle density is high on the scene.
2023-10-13 17:57:25 -03:00
Dario a9a197d2dc Rewrite the GPU Lightmapper's indirect lighting logic to match Godot 3.5's CPU Lightmapper.
Port over the logic from Godot 3.5 for indirect lighting. This should fix many issues about indirect bounces causing more energy and improve the overall quality of the result.
2023-10-13 14:33:55 -03:00
Dario 94c60ae556 Fix trace_ray() function in the lightmapper missing hits with large triangles.
The DDA traversal had a conceptual error where it did an early termination of the search if it hit a triangle, but it didn't check if the hit position was inside the bounds of the cell being traversed. This can aid to fix light leaks such as the ones found in issue #75440.
2023-10-09 09:44:40 -03:00
Dario 1b2b726502 Replace OIDN denoiser with a JNLM denoiser compute shader implementation. 2023-09-25 14:53:45 -03:00
Hugo Locurcio 7831eedf1c
Fix directional LightmapGI being too dark with static lights
The brightness now matches dynamic lights (indirect light baked only)
when Directional is enabled.

Co-authored-by: Priyansh Rathi <techiepriyansh@gmail.com>
2023-09-21 18:00:54 +02:00
clayjohn 385ee5c70b Implement Physical Light Units as an optional setting.
This allows light sources to be specified in physical light units in addition to the regular energy multiplier. In order to avoid loss of precision at high values, brightness values are premultiplied by an exposure normalization value.

In support of Physical Light Units this PR also renames CameraEffects to CameraAttributes.
2022-08-31 12:14:46 -07:00
Priyansh Rathi e995764e50
add support for soft shadows to the lightmapper 2022-06-24 21:50:13 +05:30
Rémi Verschelde 18d6b75ba8
RendererRD: Remove binding specifier for push constants
This is unsupported and glslang made it raise an error in 11.7.0:
https://github.com/KhronosGroup/glslang/pull/2810

Co-authored-by: Clay John <claynjohn@gmail.com>
2022-02-11 18:42:32 +01:00
William Deurwaarder 2ee77f6f05 GPULightmapper: better algorithm to generate rays for indirect lighting
Previous algorithm used an algorithm to generate rays that was not completely
random. This caused artifacts when large lighmap textures were used.

The new algorithm creates better rays and by that prevents artifacts.
2021-11-19 15:29:43 +01:00
William Deurwaarder a3f315c81b GPULightmapper: increase ray triangle hit rate
Currently the method ray_hits_triangle determines triangles not to be hit by
a ray due to an epsilon that is too big. In practice those triangles are hit by
those rays.

This is fixed by introducing a smaller epsilon.
2021-10-15 15:19:43 +02:00
Rémi Verschelde 9e05f80dae
Merge pull request #53744 from williamd67/GPULightmapper-prevent-endless-loop 2021-10-13 11:40:37 +02:00
William Deurwaarder f3f64389ca GPULightmapper: prevent loop with max iterations
In case the calculation of the delta contained infinity values (division by
zero), than later the calculation of the next cell failed as the infinity value
was multiplied by zero which resulted in a nan. The nan-value caused that the
next cell was equal to the current cell which resulted in an end-less loop,
which only terminates by the maximum iterations protection.

This is solved by replacing infinity with grid_size which acts as infinity.
2021-10-12 23:43:34 +02:00
William Deurwaarder fbd95c3e53 GPULightmapper: process rays to sky in all bounces as active
Before this change only rays to the sky (RAY_MISS) in the first bounce were
processed as active rays. This caused artifacts, areas were too light, when
more than one bounce were processed.

Now rays to the sky are processed as active rays for all bounces.
2021-10-12 23:25:45 +02:00
William Deurwaarder 7c19684ee9 GPULightmapper exclude back-face triangles while calculating bounces
Edges that are at the edge of a plane, may get behind the scene and will hit
back-face triangles which where included in the lighting calculations. This
caused leaking of light at the edge of planes.

In case a ray hits back-face triangle, it is skipped in the bounce calculations.
2021-09-14 22:29:31 +02:00
William Deurwaarder e11dd6500a GPULightmapper's triangles and their bounding box will be in-sync
Previously the bounding boxes and triangles were maintained in two separate
arrays (Vectors). As the triangle vector was sorted and the bounding-box array
was not , the order of both arrays differed. This meant that the index in one
was different than the other, which caused lookup issues.

To prevent this, the bounding-box is now part of the triangle structure so that
there is a single structure that cannot become out-of-sync anymore.
2021-09-11 14:02:37 +02:00
jfons 6995b0429c Assorted fixes to UV unwrapping and GPU lightmapper
Various fixes to UV2 unwrapping and the GPU lightmapper. Listed here for
context in case of git blame/bisect:

* Fix UV2 unwrapping on import, also cleaned up the unwrap cache code.
* Fix saving of RGBA images in EXR format.
* Fixes to the GPU lightmapper:
	- Added padding between atlas elements, avoids bleeding.
	- Remove old SDF generation code.
	- Fix baked attenuation for Omni/Spot lights.
	- Fix baking of material properties onto UV2 (wireframe was
	  wrongly used before).
	- Disable statically baked lights for objects that have a
	  lightmap texture to avoid applying the same light twice.
	- Fix lightmap pairing in RendererSceneCull.
	- Fix UV2 array generated from `RenderingServer::mesh_surface_get_arrays()`.
	- Port autoexposure fix for OIDN from 3.x.
	- Save debug textures as EXR when using floating point format.
2021-05-03 18:10:34 +02:00
reduz d3b49c416a Refactor GLSL shader compilation
-Used a more consistent set of keywords for the shader
-Remove all harcoded entry points
-Re-wrote the GLSL shader parser, new system is more flexible. Allows any entry point organization.
-Entry point for sky shaders is now sky().
-Entry point for particle shaders is now process().
2021-04-14 11:37:52 -03:00
jfons 99e1ce0690 Invert spotlight angle attenuation
Inverted the spotlight angle attenuation so a higher value results in
a dimmer light, this makes it more consistent with the distance
attenuation.

Also changed the way spotlighs are computed in SDFGI
and GIPorbes and GPU lightmapper, now it matches the falloff used in the scene rendering
code.
2021-02-07 20:10:33 +01:00
reduz 446618cf94 Change the light attenuation formulas.
-Much better looking, physically based.
-Almost negligible extra cost.
2021-01-05 14:44:05 -03:00
Rémi Verschelde c74d65cec8 GLSL: Change shader type specifier from [vertex] to #[vertex]
The added `#` prevents clang-format from misinterpreting the meaning
of this statement and thus messing up the formatting of the next
lines up until the first `layout` statement.

Similarly, a semicolon is now enforced on `versions` defines to
prevent clang-format from messing up formatting and putting them
all on a single line. Note: In its current state the code will
ignore chained statements on a single line separated by a semicolon.

Also removed some extraneous lines missed in previous style changes
or added by mistake with said changes (e.g. after uniform definitions
that clang-format messes up somewhat too, but we live with it).
2020-05-18 10:58:14 +02:00
Rémi Verschelde 07bc4e2f96 Style: Enforce separation line between function definitions
I couldn't find a tool that enforces it, so I went the manual route:
```
find -name "thirdparty" -prune \
  -o -name "*.cpp" -o -name "*.h" -o -name "*.m" -o -name "*.mm" \
  -o -name "*.glsl" > files
perl -0777 -pi -e 's/\n}\n([^#])/\n}\n\n\1/g' $(cat files)
misc/scripts/fix_style.sh -c
```

This adds a newline after all `}` on the first column, unless they
are followed by `#` (typically `#endif`). This leads to having lots
of places with two lines between function/class definitions, but
clang-format then fixes it as we enforce max one line of separation.

This doesn't fix potential occurrences of function definitions which
are indented (e.g. for a helper class defined in a .cpp), but it's
better than nothing. Also can't be made to run easily on CI/hooks so
we'll have to be careful with new code.

Part of #33027.
2020-05-14 16:54:55 +02:00
Rémi Verschelde 0be6d925dc Style: clang-format: Disable KeepEmptyLinesAtTheStartOfBlocks
Which means that reduz' beloved style which we all became used to
will now be changed automatically to remove the first empty line.

This makes us lean closer to 1TBS (the one true brace style) instead
of hybridating it with some Allman-inspired spacing.

There's still the case of braces around single-statement blocks that
needs to be addressed (but clang-format can't help with that, but
clang-tidy may if we agree about it).

Part of #33027.
2020-05-14 16:54:55 +02:00
Juan Linietsky 1bea8e1eac New lightmapper
-Added LocalVector (needed it)
-Added stb_rect_pack (It's pretty cool, we could probably use it for other stuff too)
-Fixes and changes all around the place
-Added library for 128 bits fixed point (required for Delaunay3D)
2020-05-10 15:59:09 -03:00