bevy/examples/2d
Jakob Hellermann 838b318863 separate tonemapping and upscaling passes (#3425)
Attempt to make features like bloom https://github.com/bevyengine/bevy/pull/2876 easier to implement.

**This PR:**
- Moves the tonemapping from `pbr.wgsl` into a separate pass
- also add a separate upscaling pass after the tonemapping which writes to the swap chain (enables resolution-independant rendering and post-processing after tonemapping)
- adds a `hdr` bool to the camera which controls whether the pbr and sprite shaders render into a `Rgba16Float` texture

**Open questions:**
- ~should the 2d graph work the same as the 3d one?~ it is the same now
- ~The current solution is a bit inflexible because while you can add a post processing pass that writes to e.g. the `hdr_texture`, you can't write to a separate `user_postprocess_texture` while reading the `hdr_texture` and tell the tone mapping pass to read from the `user_postprocess_texture` instead. If the tonemapping and upscaling render graph nodes were to take in a `TextureView` instead of the view entity this would almost work, but the bind groups for their respective input textures are already created in the `Queue` render stage in the hardcoded order.~ solved by creating bind groups in render node

**New render graph:**

![render_graph](https://user-images.githubusercontent.com/22177966/147767249-57dd4229-cfab-4ec5-9bf3-dc76dccf8e8b.png)
<details>
<summary>Before</summary>

![render_graph_old](https://user-images.githubusercontent.com/22177966/147284579-c895fdbd-4028-41cf-914c-e1ffef60e44e.png)
</details>

Co-authored-by: Carter Anderson <mcanders1@gmail.com>
2022-10-26 20:13:59 +00:00
..
2d_shapes.rs Rename shapes examples for consistency (#6082) 2022-09-25 00:57:07 +00:00
mesh2d.rs Spawn now takes a Bundle (#6054) 2022-09-23 19:55:54 +00:00
mesh2d_manual.rs separate tonemapping and upscaling passes (#3425) 2022-10-26 20:13:59 +00:00
mesh2d_vertex_color_texture.rs Spawn now takes a Bundle (#6054) 2022-09-23 19:55:54 +00:00
move_sprite.rs Spawn now takes a Bundle (#6054) 2022-09-23 19:55:54 +00:00
rotation.rs Spawn now takes a Bundle (#6054) 2022-09-23 19:55:54 +00:00
sprite.rs Spawn now takes a Bundle (#6054) 2022-09-23 19:55:54 +00:00
sprite_flipping.rs Spawn now takes a Bundle (#6054) 2022-09-23 19:55:54 +00:00
sprite_sheet.rs Use plugin setup for resource only used at setup time (#6360) 2022-10-25 22:19:34 +00:00
text2d.rs Add global time scaling (#5752) 2022-10-22 18:52:29 +00:00
texture_atlas.rs Use plugin setup for resource only used at setup time (#6360) 2022-10-25 22:19:34 +00:00
transparency_2d.rs Spawn now takes a Bundle (#6054) 2022-09-23 19:55:54 +00:00