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bevy/crates/bevy_sprite/src/render/sprite.wgsl

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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
#ifdef TONEMAP_IN_SHADER
#import bevy_core_pipeline::tonemapping
#endif
update shader imports (#10180) # Objective - bump naga_oil to 0.10 - update shader imports to use rusty syntax ## Migration Guide naga_oil 0.10 reworks the import mechanism to support more syntax to make it more rusty, and test for item use before importing to determine which imports are modules and which are items, which allows: - use rust-style imports ``` #import bevy_pbr::{ pbr_functions::{alpha_discard as discard, apply_pbr_lighting}, mesh_bindings, } ``` - import partial paths: ``` #import part::of::path ... path::remainder::function(); ``` which will call to `part::of::path::remainder::function` - use fully qualified paths without importing: ``` // #import bevy_pbr::pbr_functions bevy_pbr::pbr_functions::pbr() ``` - use imported items without qualifying ``` #import bevy_pbr::pbr_functions::pbr // for backwards compatibility the old style is still supported: // #import bevy_pbr::pbr_functions pbr ... pbr() ``` - allows most imported items to end with `_` and numbers (naga_oil#30). still doesn't allow struct members to end with `_` or numbers but it's progress. - the vast majority of existing shader code will work without changes, but will emit "deprecated" warnings for old-style imports. these can be suppressed with the `allow-deprecated` feature. - partly breaks overrides (as far as i'm aware nobody uses these yet) - now overrides will only be applied if the overriding module is added as an additional import in the arguments to `Composer::make_naga_module` or `Composer::add_composable_module`. this is necessary to support determining whether imports are modules or items.
2023-10-21 11:51:58 +00:00
#import bevy_render::{
maths::affine_to_square,
view::View,
}
Refactor Globals and View structs into separate shaders (#7512) fixes #6799 # Objective We should be able to reuse the `Globals` or `View` shader struct definitions from anywhere (including third party plugins) without needing to worry about defining unrelated shader defs. Also we'd like to refactor these structs to not be repeatedly defined. ## Solution Refactor both `Globals` and `View` into separate importable shaders. Use the imports throughout. Co-authored-by: Torstein Grindvik <52322338+torsteingrindvik@users.noreply.github.com>
2023-02-11 17:55:18 +00:00
Use a single line for of large binding lists (#9849) # Objective - When adding/removing bindings in large binding lists, git would generate very difficult-to-read diffs ## Solution - Move the `@group(X) @binding(Y)` into the same line as the binding type declaration
2023-09-19 22:17:44 +00:00
@group(0) @binding(0) var<uniform> view: View;
Begin WGSL port (sprites work, pbr lights are broken)
2021-06-28 22:36:50 +00:00
Use instancing for sprites (#9597) # Objective - Supercedes #8872 - Improve sprite rendering performance after the regression in #9236 ## Solution - Use an instance-rate vertex buffer to store per-instance data. - Store color, UV offset and scale, and a transform per instance. - Convert Sprite rect, custom_size, anchor, and flip_x/_y to an affine 3x4 matrix and store the transpose of that in the per-instance data. This is similar to how MeshUniform uses transpose affine matrices. - Use a special index buffer that has batches of 6 indices referencing 4 vertices. The lower 2 bits indicate the x and y of a quad such that the corners are: ``` 10 11 00 01 ``` UVs are implicit but get modified by UV offset and scale The remaining upper bits contain the instance index. ## Benchmarks I will compare versus `main` before #9236 because the results should be as good as or faster than that. Running `bevymark -- 10000 16` on an M1 Max with `main` at `e8b38925` in yellow, this PR in red: ![Screenshot 2023-08-27 at 18 44 10](https://github.com/bevyengine/bevy/assets/302146/bdc5c929-d547-44bb-b519-20dce676a316) Looking at the median frame times, that's a 37% reduction from before. --- ## Changelog - Changed: Improved sprite rendering performance by leveraging an instance-rate vertex buffer. --------- Co-authored-by: Giacomo Stevanato <giaco.stevanato@gmail.com>
2023-09-02 18:03:19 +00:00
struct VertexInput {
@builtin(vertex_index) index: u32,
// NOTE: Instance-rate vertex buffer members prefixed with i_
// NOTE: i_model_transpose_colN are the 3 columns of a 3x4 matrix that is the transpose of the
// affine 4x3 model matrix.
@location(0) i_model_transpose_col0: vec4<f32>,
@location(1) i_model_transpose_col1: vec4<f32>,
@location(2) i_model_transpose_col2: vec4<f32>,
@location(3) i_color: vec4<f32>,
@location(4) i_uv_offset_scale: vec4<f32>,
}
Begin WGSL port (sprites work, pbr lights are broken)
2021-06-28 22:36:50 +00:00
struct VertexOutput {
Use instancing for sprites (#9597) # Objective - Supercedes #8872 - Improve sprite rendering performance after the regression in #9236 ## Solution - Use an instance-rate vertex buffer to store per-instance data. - Store color, UV offset and scale, and a transform per instance. - Convert Sprite rect, custom_size, anchor, and flip_x/_y to an affine 3x4 matrix and store the transpose of that in the per-instance data. This is similar to how MeshUniform uses transpose affine matrices. - Use a special index buffer that has batches of 6 indices referencing 4 vertices. The lower 2 bits indicate the x and y of a quad such that the corners are: ``` 10 11 00 01 ``` UVs are implicit but get modified by UV offset and scale The remaining upper bits contain the instance index. ## Benchmarks I will compare versus `main` before #9236 because the results should be as good as or faster than that. Running `bevymark -- 10000 16` on an M1 Max with `main` at `e8b38925` in yellow, this PR in red: ![Screenshot 2023-08-27 at 18 44 10](https://github.com/bevyengine/bevy/assets/302146/bdc5c929-d547-44bb-b519-20dce676a316) Looking at the median frame times, that's a 37% reduction from before. --- ## Changelog - Changed: Improved sprite rendering performance by leveraging an instance-rate vertex buffer. --------- Co-authored-by: Giacomo Stevanato <giaco.stevanato@gmail.com>
2023-09-02 18:03:19 +00:00
@builtin(position) clip_position: vec4<f32>,
update wgpu to 0.13 (#5168) # Objective - Update wgpu to 0.13 - ~~Wait, is wgpu 0.13 released? No, but I had most of the changes already ready since playing with webgpu~~ well it has been released now - Also update parking_lot to 0.12 and naga to 0.9 ## Solution - Update syntax for wgsl shaders https://github.com/gfx-rs/wgpu/blob/master/CHANGELOG.md#wgsl-syntax - Add a few options, remove some references: https://github.com/gfx-rs/wgpu/blob/master/CHANGELOG.md#other-breaking-changes - fragment inputs should now exactly match vertex outputs for locations, so I added exports for those to be able to reuse them https://github.com/gfx-rs/wgpu/pull/2704
2022-07-14 21:17:16 +00:00
@location(0) uv: vec2<f32>,
Use instancing for sprites (#9597) # Objective - Supercedes #8872 - Improve sprite rendering performance after the regression in #9236 ## Solution - Use an instance-rate vertex buffer to store per-instance data. - Store color, UV offset and scale, and a transform per instance. - Convert Sprite rect, custom_size, anchor, and flip_x/_y to an affine 3x4 matrix and store the transpose of that in the per-instance data. This is similar to how MeshUniform uses transpose affine matrices. - Use a special index buffer that has batches of 6 indices referencing 4 vertices. The lower 2 bits indicate the x and y of a quad such that the corners are: ``` 10 11 00 01 ``` UVs are implicit but get modified by UV offset and scale The remaining upper bits contain the instance index. ## Benchmarks I will compare versus `main` before #9236 because the results should be as good as or faster than that. Running `bevymark -- 10000 16` on an M1 Max with `main` at `e8b38925` in yellow, this PR in red: ![Screenshot 2023-08-27 at 18 44 10](https://github.com/bevyengine/bevy/assets/302146/bdc5c929-d547-44bb-b519-20dce676a316) Looking at the median frame times, that's a 37% reduction from before. --- ## Changelog - Changed: Improved sprite rendering performance by leveraging an instance-rate vertex buffer. --------- Co-authored-by: Giacomo Stevanato <giaco.stevanato@gmail.com>
2023-09-02 18:03:19 +00:00
@location(1) @interpolate(flat) color: vec4<f32>,
Begin WGSL port (sprites work, pbr lights are broken)
2021-06-28 22:36:50 +00:00
};
update wgpu to 0.13 (#5168) # Objective - Update wgpu to 0.13 - ~~Wait, is wgpu 0.13 released? No, but I had most of the changes already ready since playing with webgpu~~ well it has been released now - Also update parking_lot to 0.12 and naga to 0.9 ## Solution - Update syntax for wgsl shaders https://github.com/gfx-rs/wgpu/blob/master/CHANGELOG.md#wgsl-syntax - Add a few options, remove some references: https://github.com/gfx-rs/wgpu/blob/master/CHANGELOG.md#other-breaking-changes - fragment inputs should now exactly match vertex outputs for locations, so I added exports for those to be able to reuse them https://github.com/gfx-rs/wgpu/pull/2704
2022-07-14 21:17:16 +00:00
@vertex
Use instancing for sprites (#9597) # Objective - Supercedes #8872 - Improve sprite rendering performance after the regression in #9236 ## Solution - Use an instance-rate vertex buffer to store per-instance data. - Store color, UV offset and scale, and a transform per instance. - Convert Sprite rect, custom_size, anchor, and flip_x/_y to an affine 3x4 matrix and store the transpose of that in the per-instance data. This is similar to how MeshUniform uses transpose affine matrices. - Use a special index buffer that has batches of 6 indices referencing 4 vertices. The lower 2 bits indicate the x and y of a quad such that the corners are: ``` 10 11 00 01 ``` UVs are implicit but get modified by UV offset and scale The remaining upper bits contain the instance index. ## Benchmarks I will compare versus `main` before #9236 because the results should be as good as or faster than that. Running `bevymark -- 10000 16` on an M1 Max with `main` at `e8b38925` in yellow, this PR in red: ![Screenshot 2023-08-27 at 18 44 10](https://github.com/bevyengine/bevy/assets/302146/bdc5c929-d547-44bb-b519-20dce676a316) Looking at the median frame times, that's a 37% reduction from before. --- ## Changelog - Changed: Improved sprite rendering performance by leveraging an instance-rate vertex buffer. --------- Co-authored-by: Giacomo Stevanato <giaco.stevanato@gmail.com>
2023-09-02 18:03:19 +00:00
fn vertex(in: VertexInput) -> VertexOutput {
Begin WGSL port (sprites work, pbr lights are broken)
2021-06-28 22:36:50 +00:00
var out: VertexOutput;
Use instancing for sprites (#9597) # Objective - Supercedes #8872 - Improve sprite rendering performance after the regression in #9236 ## Solution - Use an instance-rate vertex buffer to store per-instance data. - Store color, UV offset and scale, and a transform per instance. - Convert Sprite rect, custom_size, anchor, and flip_x/_y to an affine 3x4 matrix and store the transpose of that in the per-instance data. This is similar to how MeshUniform uses transpose affine matrices. - Use a special index buffer that has batches of 6 indices referencing 4 vertices. The lower 2 bits indicate the x and y of a quad such that the corners are: ``` 10 11 00 01 ``` UVs are implicit but get modified by UV offset and scale The remaining upper bits contain the instance index. ## Benchmarks I will compare versus `main` before #9236 because the results should be as good as or faster than that. Running `bevymark -- 10000 16` on an M1 Max with `main` at `e8b38925` in yellow, this PR in red: ![Screenshot 2023-08-27 at 18 44 10](https://github.com/bevyengine/bevy/assets/302146/bdc5c929-d547-44bb-b519-20dce676a316) Looking at the median frame times, that's a 37% reduction from before. --- ## Changelog - Changed: Improved sprite rendering performance by leveraging an instance-rate vertex buffer. --------- Co-authored-by: Giacomo Stevanato <giaco.stevanato@gmail.com>
2023-09-02 18:03:19 +00:00
let vertex_position = vec3<f32>(
f32(in.index & 0x1u),
f32((in.index & 0x2u) >> 1u),
0.0
);
out.clip_position = view.view_proj * affine_to_square(mat3x4<f32>(
in.i_model_transpose_col0,
in.i_model_transpose_col1,
in.i_model_transpose_col2,
)) * vec4<f32>(vertex_position, 1.0);
out.uv = vec2<f32>(vertex_position.xy) * in.i_uv_offset_scale.zw + in.i_uv_offset_scale.xy;
out.color = in.i_color;
Begin WGSL port (sprites work, pbr lights are broken)
2021-06-28 22:36:50 +00:00
return out;
Add reusable shader functions for transforming position/normal/tangent (#4901) # Objective - Add reusable shader functions for transforming positions / normals / tangents between local and world / clip space for 2D and 3D so that they are done in a simple and correct way - The next step in #3969 so check there for more details. ## Solution - Add `bevy_pbr::mesh_functions` and `bevy_sprite::mesh2d_functions` shader imports - These contain `mesh_` and `mesh2d_` versions of the following functions: - `mesh_position_local_to_world` - `mesh_position_world_to_clip` - `mesh_position_local_to_clip` - `mesh_normal_local_to_world` - `mesh_tangent_local_to_world` - Use them everywhere where it is appropriate - Notably not in the sprite and UI shaders where `mesh2d_position_world_to_clip` could have been used, but including all the functions depends on the mesh binding so I chose to not use the function there - NOTE: The `mesh_` and `mesh2d_` functions are currently identical. However, if I had defined only `bevy_pbr::mesh_functions` and used that in bevy_sprite, then bevy_sprite would have a runtime dependency on bevy_pbr, which seems undesirable. I also expect that when we have a proper 2D rendering API, these functions will diverge between 2D and 3D. --- ## Changelog - Added: `bevy_pbr::mesh_functions` and `bevy_sprite::mesh2d_functions` shader imports containing `mesh_` and `mesh2d_` versions of the following functions: - `mesh_position_local_to_world` - `mesh_position_world_to_clip` - `mesh_position_local_to_clip` - `mesh_normal_local_to_world` - `mesh_tangent_local_to_world` ## Migration Guide - The `skin_tangents` function from the `bevy_pbr::skinning` shader import has been replaced with the `mesh_tangent_local_to_world` function from the `bevy_pbr::mesh_functions` shader import
2022-06-14 00:32:33 +00:00
}
Begin WGSL port (sprites work, pbr lights are broken)
2021-06-28 22:36:50 +00:00
Use a single line for of large binding lists (#9849) # Objective - When adding/removing bindings in large binding lists, git would generate very difficult-to-read diffs ## Solution - Move the `@group(X) @binding(Y)` into the same line as the binding type declaration
2023-09-19 22:17:44 +00:00
@group(1) @binding(0) var sprite_texture: texture_2d<f32>;
@group(1) @binding(1) var sprite_sampler: sampler;
Begin WGSL port (sprites work, pbr lights are broken)
2021-06-28 22:36:50 +00:00
update wgpu to 0.13 (#5168) # Objective - Update wgpu to 0.13 - ~~Wait, is wgpu 0.13 released? No, but I had most of the changes already ready since playing with webgpu~~ well it has been released now - Also update parking_lot to 0.12 and naga to 0.9 ## Solution - Update syntax for wgsl shaders https://github.com/gfx-rs/wgpu/blob/master/CHANGELOG.md#wgsl-syntax - Add a few options, remove some references: https://github.com/gfx-rs/wgpu/blob/master/CHANGELOG.md#other-breaking-changes - fragment inputs should now exactly match vertex outputs for locations, so I added exports for those to be able to reuse them https://github.com/gfx-rs/wgpu/pull/2704
2022-07-14 21:17:16 +00:00
@fragment
fn fragment(in: VertexOutput) -> @location(0) vec4<f32> {
Use instancing for sprites (#9597) # Objective - Supercedes #8872 - Improve sprite rendering performance after the regression in #9236 ## Solution - Use an instance-rate vertex buffer to store per-instance data. - Store color, UV offset and scale, and a transform per instance. - Convert Sprite rect, custom_size, anchor, and flip_x/_y to an affine 3x4 matrix and store the transpose of that in the per-instance data. This is similar to how MeshUniform uses transpose affine matrices. - Use a special index buffer that has batches of 6 indices referencing 4 vertices. The lower 2 bits indicate the x and y of a quad such that the corners are: ``` 10 11 00 01 ``` UVs are implicit but get modified by UV offset and scale The remaining upper bits contain the instance index. ## Benchmarks I will compare versus `main` before #9236 because the results should be as good as or faster than that. Running `bevymark -- 10000 16` on an M1 Max with `main` at `e8b38925` in yellow, this PR in red: ![Screenshot 2023-08-27 at 18 44 10](https://github.com/bevyengine/bevy/assets/302146/bdc5c929-d547-44bb-b519-20dce676a316) Looking at the median frame times, that's a 37% reduction from before. --- ## Changelog - Changed: Improved sprite rendering performance by leveraging an instance-rate vertex buffer. --------- Co-authored-by: Giacomo Stevanato <giaco.stevanato@gmail.com>
2023-09-02 18:03:19 +00:00
var color = in.color * textureSample(sprite_texture, sprite_sampler, in.uv);
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
#ifdef TONEMAP_IN_SHADER
update shader imports (#10180) # Objective - bump naga_oil to 0.10 - update shader imports to use rusty syntax ## Migration Guide naga_oil 0.10 reworks the import mechanism to support more syntax to make it more rusty, and test for item use before importing to determine which imports are modules and which are items, which allows: - use rust-style imports ``` #import bevy_pbr::{ pbr_functions::{alpha_discard as discard, apply_pbr_lighting}, mesh_bindings, } ``` - import partial paths: ``` #import part::of::path ... path::remainder::function(); ``` which will call to `part::of::path::remainder::function` - use fully qualified paths without importing: ``` // #import bevy_pbr::pbr_functions bevy_pbr::pbr_functions::pbr() ``` - use imported items without qualifying ``` #import bevy_pbr::pbr_functions::pbr // for backwards compatibility the old style is still supported: // #import bevy_pbr::pbr_functions pbr ... pbr() ``` - allows most imported items to end with `_` and numbers (naga_oil#30). still doesn't allow struct members to end with `_` or numbers but it's progress. - the vast majority of existing shader code will work without changes, but will emit "deprecated" warnings for old-style imports. these can be suppressed with the `allow-deprecated` feature. - partly breaks overrides (as far as i'm aware nobody uses these yet) - now overrides will only be applied if the overriding module is added as an additional import in the arguments to `Composer::make_naga_module` or `Composer::add_composable_module`. this is necessary to support determining whether imports are modules or items.
2023-10-21 11:51:58 +00:00
color = tonemapping::tone_mapping(color, view.color_grading);
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
#endif
Sprite Batching (#3060) This implements the following: * **Sprite Batching**: Collects sprites in a vertex buffer to draw many sprites with a single draw call. Sprites are batched by their `Handle<Image>` within a specific z-level. When possible, sprites are opportunistically batched _across_ z-levels (when no sprites with a different texture exist between two sprites with the same texture on different z levels). With these changes, I can now get ~130,000 sprites at 60fps on the `bevymark_pipelined` example. * **Sprite Color Tints**: The `Sprite` type now has a `color` field. Non-white color tints result in a specialized render pipeline that passes the color in as a vertex attribute. I chose to specialize this because passing vertex colors has a measurable price (without colors I get ~130,000 sprites on bevymark, with colors I get ~100,000 sprites). "Colored" sprites cannot be batched with "uncolored" sprites, but I think this is fine because the chance of a "colored" sprite needing to batch with other "colored" sprites is generally probably way higher than an "uncolored" sprite needing to batch with a "colored" sprite. * **Sprite Flipping**: Sprites can be flipped on their x or y axis using `Sprite::flip_x` and `Sprite::flip_y`. This is also true for `TextureAtlasSprite`. * **Simpler BufferVec/UniformVec/DynamicUniformVec Clearing**: improved the clearing interface by removing the need to know the size of the final buffer at the initial clear. ![image](https://user-images.githubusercontent.com/2694663/140001821-99be0d96-025d-489e-9bfa-ba19c1dc9548.png) Note that this moves sprites away from entity-driven rendering and back to extracted lists. We _could_ use entities here, but it necessitates that an intermediate list is allocated / populated to collect and sort extracted sprites. This redundant copy, combined with the normal overhead of spawning extracted sprite entities, brings bevymark down to ~80,000 sprites at 60fps. I think making sprites a bit more fixed (by default) is worth it. I view this as acceptable because batching makes normal entity-driven rendering pretty useless anyway (and we would want to batch most custom materials too). We can still support custom shaders with custom bindings, we'll just need to define a specific interface for it.
2021-11-04 20:28:53 +00:00
return color;
Add reusable shader functions for transforming position/normal/tangent (#4901) # Objective - Add reusable shader functions for transforming positions / normals / tangents between local and world / clip space for 2D and 3D so that they are done in a simple and correct way - The next step in #3969 so check there for more details. ## Solution - Add `bevy_pbr::mesh_functions` and `bevy_sprite::mesh2d_functions` shader imports - These contain `mesh_` and `mesh2d_` versions of the following functions: - `mesh_position_local_to_world` - `mesh_position_world_to_clip` - `mesh_position_local_to_clip` - `mesh_normal_local_to_world` - `mesh_tangent_local_to_world` - Use them everywhere where it is appropriate - Notably not in the sprite and UI shaders where `mesh2d_position_world_to_clip` could have been used, but including all the functions depends on the mesh binding so I chose to not use the function there - NOTE: The `mesh_` and `mesh2d_` functions are currently identical. However, if I had defined only `bevy_pbr::mesh_functions` and used that in bevy_sprite, then bevy_sprite would have a runtime dependency on bevy_pbr, which seems undesirable. I also expect that when we have a proper 2D rendering API, these functions will diverge between 2D and 3D. --- ## Changelog - Added: `bevy_pbr::mesh_functions` and `bevy_sprite::mesh2d_functions` shader imports containing `mesh_` and `mesh2d_` versions of the following functions: - `mesh_position_local_to_world` - `mesh_position_world_to_clip` - `mesh_position_local_to_clip` - `mesh_normal_local_to_world` - `mesh_tangent_local_to_world` ## Migration Guide - The `skin_tangents` function from the `bevy_pbr::skinning` shader import has been replaced with the `mesh_tangent_local_to_world` function from the `bevy_pbr::mesh_functions` shader import
2022-06-14 00:32:33 +00:00
}
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