1 files changed, 44 insertions, 0 deletions
diff --git a/advanced_lighting/5.parallax_mapping/shaders/normals_debug.geom b/advanced_lighting/5.parallax_mapping/shaders/normals_debug.geom
new file mode 100644
index 0000000..79fd4f6
--- /dev/null
+++ b/advanced_lighting/5.parallax_mapping/shaders/normals_debug.geom
@@ -0,0 +1,44 @@
+#version 330 core
+layout(triangles) in;
+layout(line_strip, max_vertices=18) out;
+
+in VS_OUT {
+	vec4 tangent;
+	vec4 bitangent;
+	vec4 normal;
+} gs_in[];
+
+out vec3 vcolor;
+
+uniform mat4 proj;
+
+void gen_normals(int index)
+{
+	vcolor = vec3(1.0, 0.0, 0.0);
+	gl_Position = proj*(gl_in[index].gl_Position);
+	EmitVertex();
+	gl_Position = proj*(gl_in[index].gl_Position+0.5*gs_in[index].tangent);
+	EmitVertex();
+	EndPrimitive();
+
+	vcolor = vec3(0.0, 0.0, 1.0);
+	gl_Position = proj*(gl_in[index].gl_Position);
+	EmitVertex();
+	gl_Position = proj*(gl_in[index].gl_Position+0.5*gs_in[index].bitangent);
+	EmitVertex();
+	EndPrimitive();
+
+	vcolor = vec3(0.0, 1.0, 0.0);
+	gl_Position = proj*(gl_in[index].gl_Position);
+	EmitVertex();
+	gl_Position = proj*(gl_in[index].gl_Position+0.5*gs_in[index].normal);
+	EmitVertex();
+	EndPrimitive();
+}
+
+void main(void)
+{
+	gen_normals(0);
+	gen_normals(1);
+	gen_normals(2);
+}