Shader structure done.

assets/shaders/hello-world.slang

@@ -1,9 +1,18 @@
-uniform float4x4 u_Projection;
-uniform float4x4 u_View;
-uniform float4x4 u_Model;
-uniform float4 u_Color;
-uniform bool u_HasTexture;
-uniform Sampler2D u_Texture;
+struct Transforms {
+  float4x4 projection;
+  float4x4 view;
+  float4x4 model;
+}
+
+struct Colors {
+  bool hasTexture;
+  float4 colors[4];
+  int somethingElse;
+  Sampler2D texture;
+}
+
+uniform Transforms transforms;
+uniform Colors colors;
 
 struct AssembledVertex {
   float3 position : POSITION;
@@ -19,10 +28,6 @@ struct VertexStageOutput {
   float4 sv_position : SV_Position;
 };
 
-float4 someFunction(float4 color) {
-  return color * float4(0.5, 0.5, 0.5, 1.0);
-}
-
 [shader("vertex")]
 VertexStageOutput vertexMain(
   AssembledVertex assembledVertex
@@ -35,7 +40,7 @@ VertexStageOutput vertexMain(
 
   output.sv_position = mul(
     float4(position, 1.0),
-    mul(u_Model, mul(u_View, u_Projection))
+    mul(transforms.model, mul(transforms.view, transforms.projection))
   );
 
   return output;
@@ -46,10 +51,10 @@ Fragment fragmentMain(
   float2 uv: UV
 ) : SV_Target {
   Fragment output;
-  if(u_HasTexture) {
-    output.color = u_Texture.Sample(uv) * u_Color;
+  if (colors.hasTexture) {
+      output.color = colors.texture.Sample(uv) * colors.colors[0];
   } else {
-      output.color = someFunction(u_Color);
+      output.color = colors.colors[0] - float4(colors.somethingElse, 0, 0, 0);
   }
   return output;
 }