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ThierryBerger wants to merge 9 commits into from
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Post processing example improvements #5902

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d1d2a69
use vertex shader + attempt at resizing
ThierryBerger Sep 7, 2022
61149e5
Update examples/shader/post_processing.rs
ThierryBerger Sep 7, 2022
a885e03
plugin for post processing
ThierryBerger Sep 7, 2022
ad51631
continuously update material post processing to allow resizing
ThierryBerger Sep 7, 2022
bd87a21
fix resizing without updating material explicitly
ThierryBerger Sep 8, 2022
9cca1c5
fix warning
ThierryBerger Sep 8, 2022
95465aa
fix wording
ThierryBerger Sep 8, 2022
824af1c
Update examples/shader/post_processing.rs
ThierryBerger Sep 7, 2022
14f752c
few wrong wordings corrections
ThierryBerger Sep 8, 2022
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16 changes: 11 additions & 5 deletions assets/shaders/custom_material_chromatic_aberration.wgsl
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Original file line number Diff line number Diff line change
Expand Up @@ -6,22 +6,28 @@ var texture: texture_2d<f32>;
@group(1) @binding(1)
var our_sampler: sampler;

@group(1) @binding(2)
var<uniform> offset_r: vec2<f32>;
@group(1) @binding(3)
var<uniform> offset_g: vec2<f32>;
@group(1) @binding(4)
var<uniform> offset_b: vec2<f32>;

@fragment
fn fragment(
@builtin(position) position: vec4<f32>,
#import bevy_sprite::mesh2d_vertex_output
) -> @location(0) vec4<f32> {
// Get screen position with coordinates from 0 to 1
let uv = position.xy / vec2<f32>(view.width, view.height);
let offset_strength = 0.02;

// Sample each color channel with an arbitrary shift
var output_color = vec4<f32>(
textureSample(texture, our_sampler, uv + vec2<f32>(offset_strength, -offset_strength)).r,
textureSample(texture, our_sampler, uv + vec2<f32>(-offset_strength, 0.0)).g,
textureSample(texture, our_sampler, uv + vec2<f32>(0.0, offset_strength)).b,
textureSample(texture, our_sampler, uv + offset_r).r,
textureSample(texture, our_sampler, uv + offset_g).g,
textureSample(texture, our_sampler, uv + offset_b).b,
1.0
);
);

return output_color;
}
23 changes: 23 additions & 0 deletions assets/shaders/screen_vertex.wgsl
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Original file line number Diff line number Diff line change
@@ -0,0 +1,23 @@
#import bevy_sprite::mesh2d_view_bindings
#import bevy_sprite::mesh2d_bindings

// NOTE: Bindings must come before functions that use them!
#import bevy_sprite::mesh2d_functions

struct Vertex {
@location(0) position: vec3<f32>,
@location(2) uv: vec2<f32>,
};

struct VertexOutput {
@builtin(position) clip_position: vec4<f32>,
#import bevy_sprite::mesh2d_vertex_output
}

@vertex
fn vertex(vertex: Vertex) -> VertexOutput {
var out: VertexOutput;
out.uv = vertex.uv;
out.clip_position = vec4<f32>((out.uv - vec2<f32>(0.5, 0.5)) * 2.0, 0.0, 1.0);
return out;
}
3 changes: 2 additions & 1 deletion examples/3d/render_to_texture.rs
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Expand Up @@ -10,6 +10,7 @@ use bevy::{
render_resource::{
Extent3d, TextureDescriptor, TextureDimension, TextureFormat, TextureUsages,
},
texture::BevyDefault,
view::RenderLayers,
},
};
Expand Down Expand Up @@ -49,7 +50,7 @@ fn setup(
label: None,
size,
dimension: TextureDimension::D2,
format: TextureFormat::Bgra8UnormSrgb,
format: TextureFormat::bevy_default(),
mip_level_count: 1,
sample_count: 1,
usage: TextureUsages::TEXTURE_BINDING
Expand Down
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