1 files changed, 31 insertions, 0 deletions
diff --git a/src/datavis3d/engine/shaders/fragmentShaderAmbient b/src/datavis3d/engine/shaders/fragmentShaderAmbient
new file mode 100644
index 00000000..7614570e
--- /dev/null
+++ b/src/datavis3d/engine/shaders/fragmentShaderAmbient
@@ -0,0 +1,31 @@
+varying highp vec2 UV;
+varying highp vec3 position_wrld;
+varying highp vec3 normal_cmr;
+varying highp vec3 eyeDirection_cmr;
+varying highp vec3 lightDirection_cmr;
+uniform highp vec3 lightPosition_wrld;
+uniform highp vec3 color_mdl;
+void main() {
+        highp vec3 lightColor = vec3(1.0, 1.0, 1.0);
+        highp float lightPower = 10.0;
+        highp vec3 materialAmbientColor = vec3(0.5, 0.5, 0.5) * color_mdl;
+        //highp vec3 materialDiffuseColor = vec3(0.1, 0.1, 0.1) * color_mdl;
+        highp vec3 materialSpecularColor = vec3(0.3, 0.3, 0.3) * color_mdl;
+	highp float distance = length(lightPosition_wrld - position_wrld);
+	highp vec3 n = normalize(normal_cmr);
+	highp vec3 l = normalize(lightDirection_cmr);
+        highp float cosTheta = dot(n, l);
+        if (cosTheta < 0.0) { cosTheta = 0.0; }
+        if (cosTheta > 1.0) { cosTheta = 1.0; }
+        highp vec3 E = normalize(eyeDirection_cmr);
+	highp vec3 R = reflect(-l, n);
+        highp float cosAlpha = dot(E, R);
+        if (cosAlpha < 0.0) { cosAlpha = 0.0; }
+        if (cosAlpha > 1.0) { cosAlpha = 1.0; }
+        gl_FragColor.rgb =
+		materialAmbientColor +
+                //materialDiffuseColor * lightColor * lightPower * cosTheta / (distance * distance) +
+                materialSpecularColor * lightColor * lightPower * (cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha) / (distance * distance);
+    gl_FragColor.a = 1.0;
+}
+