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Author SHA1 Message Date
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
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
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
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
c21951407d HDR: Better technique ordering 2021-08-31 18:42:21 +02:00
Fernando García Liñán
e505c79618 Better handling of transparent objects in Classic
- model-combined-transparent is deprecated.
- model-transparent can be used to let some rendering pipelines know that
an object is transparent.
- In the case of Classic, model-transparent just inherits from model-default
and the object is rendered normally.
2021-08-31 18:25:28 +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
eea955168e HDR: Organize shadow-related files and add screen space shadows 2021-08-24 23:38:56 +02:00
Fernando García Liñán
212f8fdab9 HDR: Add support for glTF transparent objects 2021-08-19 01:42:32 +02:00