Updated shaders to produce RGB triangle

bin/shaders/src/simple.frag

@@ -1,7 +1,9 @@
 #version 450
 
-layout (location = 0) out vec4 outcolour;
+layout(location = 0) in vec3 fragColour;
+layout(location = 0) out vec4 outColour;
+
 void main()
 {
-	outcolour = vec4(1.0, 0.0, 0.0, 1.0);
+    outColour = vec4(fragColour, 1.0);
 }

bin/shaders/src/simple.vert

@@ -1,11 +1,21 @@
 #version 450
 
-vec2 positions[3] = {
+layout(location = 0) out vec3 fragColour;
+
+vec2 positions[3] = vec2[](
     vec2(0.0, -0.5),
     vec2(0.5, 0.5),
     vec2(-0.5, 0.5)
-};
+);
+
+vec3 colours[3] = vec3[](
+    vec3(1.0, 0.0, 0.0),
+    vec3(0.0, 1.0, 0.0),
+    vec3(0.0, 0.0, 1.0)
+);
+
 void main()
 {
     gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
+    fragColour = colours[gl_VertexIndex];
 }