Different scene, toon shading and separate parameters for color input attachment

data/shaders/inputattachments/attachmentread.frag

@@ -4,16 +4,30 @@ layout (input_attachment_index = 0, binding = 0) uniform subpassInput inputColor
 layout (input_attachment_index = 1, binding = 1) uniform subpassInput inputDepth;
 
 layout (binding = 2) uniform UBO {
+	vec2 brightnessContrast;
 	vec2 range;
 	int attachmentIndex;
 } ubo;
 
 layout (location = 0) out vec4 outColor;
 
+vec3 brightnessContrast(vec3 color, float brightness, float contrast) {
+	return (color - 0.5) * contrast + 0.5 + brightness;
+}
+
 void main() 
 {
-	// Read values from previous sub pass
-	vec3 col = ubo.attachmentIndex == 0 ? subpassLoad(inputColor).rgb : subpassLoad(inputDepth).rrr;
+	// Apply brightness and contrast filer to color input
+	if (ubo.attachmentIndex == 0) {
+		// Read color from previous color input attachment
+		vec3 color = subpassLoad(inputColor).rgb;
+		outColor.rgb = brightnessContrast(color, ubo.brightnessContrast[0], ubo.brightnessContrast[1]);
+	}
 
-	outColor.rgb = ((col - ubo.range[0]) * 1.0 / (ubo.range[1] - ubo.range[0]));
+	// Visualize depth input range
+	if (ubo.attachmentIndex == 1) {
+		// Read depth from previous depth input attachment
+		float depth = subpassLoad(inputDepth).r;
+		outColor.rgb = vec3((depth - ubo.range[0]) * 1.0 / (ubo.range[1] - ubo.range[0]));
+	}
 }

data/shaders/inputattachments/attachmentwrite.frag

@@ -1,11 +1,23 @@
 #version 450
 
 layout (location = 0) in vec3 inColor;
+layout (location = 1) in vec3 inNormal;
+layout (location = 2) in vec3 inViewVec;
+layout (location = 3) in vec3 inLightVec;
 
 layout (location = 0) out vec4 outColor;
 
 void main() 
 {
-	outColor = vec4(inColor, 0.0);
+	// Toon shading color attachment output
+	float intensity = dot(normalize(inNormal), normalize(inLightVec));
+	float shade = 1.0;
+	shade = intensity < 0.5 ? 0.75 : shade;
+	shade = intensity < 0.35 ? 0.6 : shade;
+	shade = intensity < 0.25 ? 0.5 : shade;
+	shade = intensity < 0.1 ? 0.25 : shade;
+
+	outColor.rgb = inColor * 3.0 * shade;
+
 	// Depth attachment does not need to be explicitly written
 }

data/shaders/inputattachments/attachmentwrite.vert

@@ -1,9 +1,6 @@
 #version 450
 
-#extension GL_ARB_separate_shader_objects : enable
-#extension GL_ARB_shading_language_420pack : enable
-
-layout (location = 0) in vec4 inPos;
+layout (location = 0) in vec3 inPos;
 layout (location = 1) in vec3 inColor;
 layout (location = 2) in vec3 inNormal;
 
@@ -14,6 +11,9 @@ layout (binding = 0) uniform UBO {
 } ubo;
 
 layout (location = 0) out vec3 outColor;
+layout (location = 1) out vec3 outNormal;
+layout (location = 2) out vec3 outViewVec;
+layout (location = 3) out vec3 outLightVec;
 
 out gl_PerVertex {
 	vec4 gl_Position;
@@ -21,6 +21,9 @@ out gl_PerVertex {
 
 void main() 
 {
-	gl_Position = ubo.projection * ubo.view * ubo.model * inPos;
+	gl_Position = ubo.projection * ubo.view * ubo.model * vec4(inPos, 1.0);
 	outColor = inColor;
+	outNormal = inNormal;
+	outLightVec = vec3(0.0f, 5.0f, 15.0f) - inPos;
+	outViewVec = -inPos.xyz;		
 }