Continue vulkan c++ tutorial

res/shaders/main.frag

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+#version 450
+
+layout (location = 0) in vec3 fragColor;
+layout (location = 0) out vec4 outColor;
+
+void main() {
+    outColor = vec4(fragColor, 1.0);
+}

res/shaders/main.vert

@@ -0,0 +1 @@
+#version 450

out gl_PerVertex {
    vec4 gl_Position;
};

layout (location = 0) out vec3 fragColor;

vec2 positions[3] = vec2[](
vec2(0.0, -0.5),
vec2(0.5, 0.5),
vec2(-0.5, 0.5)
);

vec3 colors[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);
    fragColor = colors[gl_VertexIndex];
}