Added cascaded shadow mapping example

data/shaders/shadowmappingcascade/depthpass.vert

@@ -0,0 +1,23 @@
+#version 450
+
+layout (location = 0) in vec3 inPos;
+
+// todo: pass via specialization constant
+#define SHADOW_MAP_CASCADE_COUNT 4
+
+layout(push_constant) uniform PushConsts {
+	uint cascadeIndex;
+} pushConsts;
+
+layout (binding = 0) uniform UBO {
+	mat4[SHADOW_MAP_CASCADE_COUNT] cascadeViewProjMat;
+} ubo;
+
+out gl_PerVertex {
+	vec4 gl_Position;   
+};
+
+void main()
+{
+	gl_Position =  ubo.cascadeViewProjMat[pushConsts.cascadeIndex] * vec4(inPos, 1.0);
+}