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51 commits

Author SHA1 Message Date
Fernando García Liñán
5f4f51c8ea HDR: Add support for glTF emissive objects 2023-05-04 06:09:36 +02:00
Fernando García Liñán
1e66c4104a HDR: Improved environment mapping 
- Terrain and clouds and now rendered on the envmap, with correct aerial
  perspective.
- Each face is rendered on a separate frame to help with performance.
- All faces are updated every 1.5 minutes. This can be changed through a
  property.
 2023-05-03 02:03:10 +02:00
Fernando García Liñán
d38e6bffd6 HDR: Fix building vertex attributes 2023-04-28 23:02:42 +02:00
Fernando García Liñán
649e2a0574 HDR: Simplify water shader 2023-04-28 04:58:24 +02:00
Fernando García Liñán
631bc13e94 HDR: Add tree shaders 2023-04-23 23:11:51 +02:00
Fernando García Liñán
4ab57b15c2 HDR: Add missing GL extension 2023-04-23 21:30:29 +02:00
Fernando García Liñán
8a28ac7131 HDR: Add support for random and OSG buildings 2023-04-23 21:26:26 +02:00
Fernando García Liñán
691337a00e HDR: Add separate fog layer to atmosphere 
Also use Nasal to feed the shaders' uniforms. Much better than running
the computations on the GPU.
 2023-04-21 02:15:42 +02:00
Fernando García Liñán
10cd3fb8c4 HDR: Normal mapping without precomputed tangents 
Also tidy up model and terrain shaders. Inputs and outputs to vertex and
fragment shaders are now interface blocks.
 2023-04-17 05:09:24 +02:00
Fernando García Liñán
82d415cbd4 HDR: Add remaining aerosol types 
Now the properties of the atmospheric medium can be changed through the
property tree.
 2023-04-16 07:19:22 +02:00
Fernando García Liñán
e77e5bad9c HDR: Fix aerial perspective banding 2023-04-13 05:57:01 +02:00
Fernando García Liñán
f53a170539 HDR: Better bloom effect 
We also now pre-expose our lighting before writing to the HDR buffers.
This solves some precision issues and prevents the Sun from producing
infinite values.
 2023-04-13 00:30:02 +02:00
Stuart Buchanan
ce24a3f05f HDR: WS30 basic terrain shader 2023-04-12 18:11:41 +01:00
Fernando García Liñán
23b4e6e26f Fix typo 2023-04-11 17:59:44 +02:00
Fernando García Liñán
8af67bfb2f HDR: Complete refactoring of shader style and naming 
See https://wiki.flightgear.org/Shader_Style_Guide.
 2023-04-11 15:53:47 +02:00
Fernando García Liñán
c4d19877cf HDR: Significant update 
- New atmosphering rendering technique based on my own work.
- Attempt to fix some remaining transparency issues.
- Use a luminance histogram for auto exposure.
- Add support for clustered shading.
- Add WS 2.0 shaders.
- Add 3D cloud shaders.
- Add orthoscenery support.
 2023-04-06 00:18:29 +02:00
Stuart Buchanan
d723b0b518 WS30 - Uniform Arrays and lighting model 
Use Uniform Arrays instead of Texture1D.

Use ambient/diffuse/specular/shininess material
properties consistently across all WS30 shaders.

Use consistent shading model for photoscenery vs.
landclass to minimize visual difference.
 2021-11-10 22:58:44 +00:00
Fernando García Liñán
96a6e6c9bf HDR: Implement GTAO (Ground Truth Ambient Occlusion) 2021-09-01 04:26:03 +02:00
Fernando García Liñán
3459e7ddfe HDR: Use gl_VertexID instead of the MVP matrix in fullscreen passes 2021-08-31 18:02:38 +02:00
Fernando García Liñán
9f39644199 HDR: Optimize the G-Buffer and do not separate the occlusion texture 
- The G-Buffer layout has been redesigned to be 96 bits per pixel. There are 24
unused bits that can be used for extra material parameters later (like
clearcoat).
- Add better debug views for the G-Buffer.
- Use octahedron normal encoding. This yields the same results as the previous
method but uses 16 bits less.
- Use rg11fb10f for the environment mapping cubemaps.
- Tweak the shadow mapping parameters and add a colored debug mode.
- Only render shadow maps for objects that inherit from model-default.eff or
model-pbr.eff instead of having a fallback Effect. Now transparent objects
should be ignored (if they are marked as such with model-transparent or
similar).
- Remove the separate occlusion texture. Now the PBR Effect expects a single
texture where R=occlusion, G=roughness and B=metallic.
 2021-08-27 00:03:43 +02:00
Fernando García Liñán
a789c24209 HDR: Fix model-combined when not using a normal map 2021-08-25 16:49:08 +02:00
Fernando García Liñán
beb4381ad1 HDR: Fix model-combined objects without normal maps 2021-08-25 15:16:38 +02:00
Fernando García Liñán
aaf6bb9309 HDR: Improve ACES tone mapping curve 
The previous one tended to over-expose the final image.
 2021-08-25 15:15:57 +02:00
Fernando García Liñán
55410e9d35 HDR: Port chrome.eff 2021-08-25 14:32:22 +02:00
Fernando García Liñán
356ff8ff34 Fix indentation 2021-08-25 04:25:09 +02:00
Fernando García Liñán
9983a0c68c HDR: Water rendering 2021-08-25 04:17:09 +02:00
Fernando García Liñán
eea955168e HDR: Organize shadow-related files and add screen space shadows 2021-08-24 23:38:56 +02:00
Fernando García Liñán
eed433ce9f HDR: Use stencil buffer for optimization purposes 2021-08-23 12:44:26 +02:00
Fernando García Liñán
8662ce0a86 HDR: Add SMAA as the default antialiasing technique 2021-08-23 01:05:41 +02:00
Fernando García Liñán
b79d09d45f HDR: Prevent materials with roughness=0 from blowing out the lighting 2021-08-22 18:01:30 +02:00
Fernando García Liñán
b52fe3bf34 HDR: Remove glass.eff minimum alpha hack 2021-08-19 20:19:55 +02:00
Fernando García Liñán
7ff31e9004 HDR: Properly handle AC3D transparent materials 2021-08-19 18:20:37 +02:00
Fernando García Liñán
765a7d88f5 HDR: Use precomputed uniforms in the skydome shader 2021-08-19 14:06:25 +02:00
Fernando García Liñán
94f4007793 HDR: Use precomputed uniforms for atmospheric scattering 2021-08-19 12:50:16 +02:00
Fernando García Liñán
212f8fdab9 HDR: Add support for glTF transparent objects 2021-08-19 01:42:32 +02:00
Fernando García Liñán
05994100ea HDR: Better handling of model-combined for backwards compatibility 2021-08-18 12:27:03 +02:00
Fernando García Liñán
f5bc6df9fb HDR: Use a reversed depth buffer to increase precision and avoid Z-fighting 2021-08-17 20:58:48 +02:00
Fernando García Liñán
13df616ca6 HDR: Support glTF models 2021-08-16 17:10:01 +02:00
Fernando García Liñán
4d34115177 HDR: Increase maximum distance of aerial perspective 2021-07-31 19:13:19 +02:00
Fernando García Liñán
467468ef3a HDR: Improve exposure and bloom handling 2021-07-31 19:13:19 +02:00
Fernando García Liñán
526491790e HDR: Improve envmap pre-filtering 2021-07-31 19:13:19 +02:00
Fernando García Liñán
5c1c28c536 HDR: Improve PBR Effect 2021-07-31 19:13:19 +02:00
Fernando García Liñán
871654c16f HDR: Better handling of the Sun 
Add transmittance to the Sun illuminance value to get correct colors at every time of day.
Also improved the Sun disk rendering.
 2021-07-31 19:13:19 +02:00
Fernando García Liñán
a00f7ddfaf HDR: Fix Earth appearing to be "rounder" than normal 
We have to compensate for the fact that the sky-view LUT contains the view from the camera, but the skydome remains fixed on the ground.
 2021-07-29 11:55:01 +02:00
Fernando García Liñán
af29642423 HDR: miscellaneous changes 
- Add an utility linearizeDepth function to help visualize the depth buffer for debug purposes.
- Use 'color0' instead of 'color' for all color attachments.
- Do not write to the HDR buffer if a fragment doesn't need shading (depth = 1).
 2021-07-29 08:45:17 +02:00
Fernando García Liñán
760db3ba6d HDR: gracefully handle situations where the viewer is below the ground 2021-07-28 11:37:33 +02:00
Fernando García Liñán
9b9ae5cf38 HDR pipeline: even better atmospheric scattering 
Implementation of "A Scalable and Production Ready Sky and Atmosphere Rendering Technique" by Sébastien Hillaire (2020).
 2021-07-28 09:40:04 +02:00
Fernando García Liñán
016585e176 HDR pipeline: Use MRT to prefilter the environment map 2021-07-26 17:21:20 +02:00
Fernando García Liñán
9eaef501c7 HDR pipeline: a lot of improvements to atmospheric scattering 2021-07-26 12:11:37 +02:00
Fernando García Liñán
1215f1eba2 HDR pipeline: add placeholder shaders for WS 3.0 2021-07-24 13:35:53 +02:00