Added sample for shader debugprintf

shaders/glsl/debugprintf/toon.frag

@@ -0,0 +1,35 @@
+#version 450
+
+layout (binding = 1) uniform sampler2D samplerColorMap;
+
+layout (location = 0) in vec3 inNormal;
+layout (location = 1) in vec3 inColor;
+layout (location = 2) in vec3 inViewVec;
+layout (location = 3) in vec3 inLightVec;
+
+layout (location = 0) out vec4 outFragColor;
+
+void main() 
+{
+	// Desaturate color
+    vec3 color = vec3(mix(inColor, vec3(dot(vec3(0.2126,0.7152,0.0722), inColor)), 0.65));	
+
+	// High ambient colors because mesh materials are pretty dark
+	vec3 ambient = color * vec3(1.0);
+	vec3 N = normalize(inNormal);
+	vec3 L = normalize(inLightVec);
+	vec3 V = normalize(inViewVec);
+	vec3 R = reflect(-L, N);
+	vec3 diffuse = max(dot(N, L), 0.0) * color;
+	vec3 specular = pow(max(dot(R, V), 0.0), 16.0) * vec3(0.75);
+	outFragColor = vec4(ambient + diffuse * 1.75 + specular, 1.0);		
+	
+	float intensity = dot(N,L);
+	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;
+
+	outFragColor.rgb = inColor * 3.0 * shade;
+}

shaders/glsl/debugprintf/toon.vert

@@ -0,0 +1,37 @@
+#version 450
+
+// This extension is required to use printf
+#extension GL_EXT_debug_printf : enable
+
+layout (location = 0) in vec3 inPos;
+layout (location = 1) in vec3 inNormal;
+layout (location = 2) in vec3 inColor;
+
+layout (binding = 0) uniform UBO 
+{
+	mat4 projection;
+	mat4 model;
+	vec4 lightPos;
+} ubo;
+
+layout (location = 0) out vec3 outNormal;
+layout (location = 1) out vec3 outColor;
+layout (location = 2) out vec3 outViewVec;
+layout (location = 3) out vec3 outLightVec;
+
+void main() 
+{
+	outNormal = inNormal;
+	outColor = inColor;
+	gl_Position = ubo.projection * ubo.model * vec4(inPos.xyz, 1.0);
+	
+	vec4 pos = ubo.model * vec4(inPos, 1.0);
+	
+	// Output the vertex position using debug printf
+	debugPrintfEXT("Position = %v4f", pos);
+
+	outNormal = mat3(ubo.model) * inNormal;
+	vec3 lPos = mat3(ubo.model) * ubo.lightPos.xyz;
+	outLightVec = lPos - pos.xyz;
+	outViewVec = -pos.xyz;		
+}