Custom Render Phase Example

Cargo.toml

@@ -1926,6 +1926,17 @@ description = "A compute shader that simulates Conway's Game of Life"
 category = "Shaders"
 wasm = false
 
+[[example]]
+name = "custom_render_phase"
+path = "examples/shader/custom_render_phase.rs"
+
+[package.metadata.example.custom_render_phase]
+name = "Custom Render Phase"
+description = "An example showcasing how to set up a custom render phase and draw command"
+category = "Shaders"
+wasm = false
+
+
 [[example]]
 name = "array_texture"
 path = "examples/shader/array_texture.rs"

assets/shaders/custom_draw.wgsl

@@ -0,0 +1,33 @@
+#import bevy_pbr::mesh_functions as mesh_functions
+#import bevy_pbr::{
+ mesh_types::Mesh,
+ view_transformations,
+ forward_io::Vertex,
+}
+#import bevy_render::view::View
+
+@group(0) @binding(0) var<uniform> view: View;
+@group(1) @binding(0) var<uniform> mesh: Mesh;
+
+struct CustomMaterial {
+ color: vec4<f32>,
+};
+@group(2) @binding(0) var<uniform> material: CustomMaterial;
+
+struct VertexOutput {
+ @builtin(position) position: vec4<f32>,
+}
+
+@vertex
+fn vertex(vertex: Vertex) -> VertexOutput {
+ var out: VertexOutput;
+ let model = mesh_functions::get_model_matrix(vertex.instance_index);
+ let world_position = mesh_functions::mesh_position_local_to_world(model, vec4<f32>(vertex.position, 1.0));
+ out.position = view_transformations::position_world_to_clip(world_position.xyz);
+ return out;
+}
+
+@fragment
+fn fragment() -> @location(0) vec4<f32> {
+ return material.color;
+}

examples/README.md

@@ -296,6 +296,7 @@ Example | Description
 [Animated](../examples/shader/animate_shader.rs) | A shader that uses dynamic data like the time since startup
 [Array Texture](../examples/shader/array_texture.rs) | A shader that shows how to reuse the core bevy PBR shading functionality in a custom material that obtains the base color from an array texture.
 [Compute - Game of Life](../examples/shader/compute_shader_game_of_life.rs) | A compute shader that simulates Conway's Game of Life
+[Custom Render Phase](../examples/shader/custom_render_phase.rs) | An example showcasing how to set up a custom render phase and draw command
 [Custom Vertex Attribute](../examples/shader/custom_vertex_attribute.rs) | A shader that reads a mesh's custom vertex attribute
 [Extended Material](../examples/shader/extended_material.rs) | A custom shader that builds on the standard material
 [Instancing](../examples/shader/shader_instancing.rs) | A shader that renders a mesh multiple times in one draw call