Add fullscreen vertex shader module

src/Nazara/Graphics/Resources/Shaders/FullscreenVertex.nzsl

@@ -0,0 +1,33 @@
+[nzsl_version("1.0")]
+module Engine.FullscreenVertex;
+
+[export]
+struct VertIn
+{
+	[builtin(vertex_index)] vert_index: i32
+}
+
+[export]
+struct VertOut
+{
+	[builtin(position)] position: vec4[f32],
+	[location(0)] uv: vec2[f32]
+}
+
+const vertPos = array[vec2[f32]](
+	vec2[f32](-1.0, 1.0),
+	vec2[f32](-1.0, -3.0),
+	vec2[f32]( 3.0, 1.0)
+);
+
+[export, entry(vert)]
+fn VertexShader(input: VertIn) -> VertOut
+{
+	let position = vertPos[input.vert_index];
+
+	let output: VertOut;
+	output.position = vec4[f32](position, 0.0, 1.0);
+	output.uv = position * 0.5 + vec2[f32](0.5, 0.5);
+
+	return output;
+}

src/Nazara/Graphics/Resources/Shaders/TextureBlit.nzsl

@@ -1,33 +1,13 @@
 [nzsl_version("1.0")]
 module TextureBlit;
 
+import VertOut, VertexShader from Engine.FullscreenVertex;
+
 external
 {
     [binding(0)] texture: sampler2D[f32]
 }
 
-struct VertIn
-{
-    [location(0)] position: vec2[f32],
-    [location(1)] uv: vec2[f32]
-}
-
-struct VertOut
-{
-    [builtin(position)] position: vec4[f32],
-    [location(0)] uv: vec2[f32]
-}
-
-[entry(vert)]
-fn main(vertIn: VertIn) -> VertOut
-{
-    let output: VertOut;
-    output.position = vec4[f32](vertIn.position, 0.0, 1.0);
-    output.uv = vertIn.uv;
-
-    return output;
-}
-
 struct FragOut
 {
     [location(0)] color: vec4[f32]