1 files changed, 33 insertions, 0 deletions
diff --git a/src/extras/shaders/gl3/normaldiffusemap.frag b/src/extras/shaders/gl3/normaldiffusemap.frag
new file mode 100644
index 000000000..a99a7ed73
--- /dev/null
+++ b/src/extras/shaders/gl3/normaldiffusemap.frag
@@ -0,0 +1,33 @@
+#version 150 core
+
+in vec3 worldPosition;
+in vec2 texCoord;
+in mat3 tangentMatrix;
+
+uniform sampler2D diffuseTexture;
+uniform sampler2D normalTexture;
+
+// TODO: Replace with a struct
+uniform vec3 ka;            // Ambient reflectivity
+uniform vec3 ks;            // Specular reflectivity
+uniform float shininess;    // Specular shininess factor
+
+uniform vec3 eyePosition;
+
+out vec4 fragColor;
+
+#pragma include light.inc.frag
+
+void main()
+{
+    // Sample the textures at the interpolated texCoords
+    vec4 diffuseTextureColor = texture( diffuseTexture, texCoord );
+    vec3 normal = 2.0 * texture( normalTexture, texCoord ).rgb - vec3( 1.0 );
+
+    // Calculate the lighting model, keeping the specular component separate
+    vec3 diffuseColor, specularColor;
+    adsModelNormalMapped(worldPosition, normal, eyePosition, shininess, tangentMatrix, diffuseColor, specularColor);
+
+    // Combine spec with ambient+diffuse for final fragment color
+    fragColor = vec4( ka + diffuseTextureColor.rgb * diffuseColor + ks * specularColor, 1.0 );
+}