Mesh shading example (vulkano-rs#2437)

* mesh-shader-triangle example: copied from instancing example

* mesh-shader-triangle example: move shaders to separate files

* mesh-shader example: rename example

* mesh-shader example: implement mesh shader generating geometry

* mesh-shader example: fix instance data indexing partially, still has struct alignment issues

* mesh-shader example: fixed instance buffer alignment issues

* remove unnecessary things

Co-authored-by: marc0246 <[email protected]>

* mesh-shader example: cargo fmt

* mesh-shader example: rename shaders to end in .glsl

* mesh-shader example: added color out variable, docs

* mesh-shader example: rename shader again

* mesh-shader example: reformat shader code

* mesh-shader example: cargo fmt with nightly

---------

Co-authored-by: Firestar99 <[email protected]>
Co-authored-by: marc0246 <[email protected]>

examples/mesh-shader/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "mesh-shader"
+version = "0.0.0"
+edition = "2021"
+publish = false
+
+[[bin]]
+name = "mesh-shader"
+path = "main.rs"
+test = false
+bench = false
+doc = false
+
+[dependencies]
+vulkano = { workspace = true, features = ["macros"] }
+vulkano-shaders = { workspace = true }
+winit = { workspace = true }

examples/mesh-shader/frag.glsl

@@ -0,0 +1,9 @@
+#version 450
+
+layout(location = 0) in vec4 in_color;
+
+layout(location = 0) out vec4 f_color;
+
+void main() {
+    f_color = in_color;
+}