3 files changed, 6 insertions, 5 deletions
diff --git a/src/datavis3d/engine/shaders/colorOnY_ES2.frag b/src/datavis3d/engine/shaders/colorOnY_ES2.frag
index 68c8ac39..78c778d3 100644
--- a/src/datavis3d/engine/shaders/colorOnY_ES2.frag
+++ b/src/datavis3d/engine/shaders/colorOnY_ES2.frag
@@ -10,7 +10,8 @@ varying highp vec3 lightDirection_cmr;
 varying highp vec2 coords_mdl;
 
 void main() {
-    highp vec3 materialDiffuseColor = vec3(coords_mdl.y * color_mdl.x, coords_mdl.y * color_mdl.y, coords_mdl.y * color_mdl.z);
+    highp float heightMod = coords_mdl.y + (1.0 - ambientStrength);
+    highp vec3 materialDiffuseColor = heightMod * color_mdl;
     highp vec3 materialAmbientColor = vec3(ambientStrength, ambientStrength, ambientStrength) * materialDiffuseColor;
     highp vec3 materialSpecularColor = vec3(1.0, 1.0, 1.0);
 
@@ -29,8 +30,8 @@ void main() {
 
     gl_FragColor.rgb =
         materialAmbientColor +
-        materialDiffuseColor * lightStrength * (cosTheta * cosTheta) / (distance * distance) +
-        materialSpecularColor * lightStrength * (cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha) / (distance * distance);
+        materialDiffuseColor * lightStrength * (cosTheta * cosTheta) / distance +
+        materialSpecularColor * lightStrength * (cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha) / distance;
     gl_FragColor.a = 1.0;
 }
 
diff --git a/src/datavis3d/engine/shaders/default_ES2.frag b/src/datavis3d/engine/shaders/default_ES2.frag
index a70ed241..7d6214b2 100644
--- a/src/datavis3d/engine/shaders/default_ES2.frag
+++ b/src/datavis3d/engine/shaders/default_ES2.frag
@@ -32,7 +32,7 @@ void main() {
     gl_FragColor.rgb =
         materialAmbientColor +
         materialDiffuseColor * lightStrength * (cosTheta * cosTheta) / distance +
-        materialSpecularColor * lightStrength * (cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha) / distance;
+        materialSpecularColor * lightStrength * (cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha) / distance;
     gl_FragColor.a = 1.0;
 }
 
diff --git a/src/datavis3d/engine/shaders/texture_ES2.frag b/src/datavis3d/engine/shaders/texture_ES2.frag
index 16161035..58097ba5 100644
--- a/src/datavis3d/engine/shaders/texture_ES2.frag
+++ b/src/datavis3d/engine/shaders/texture_ES2.frag
@@ -31,7 +31,7 @@ void main() {
     gl_FragColor.rgb =
         materialAmbientColor +
         materialDiffuseColor * lightStrength * (cosTheta * cosTheta) / distance +
-        materialSpecularColor * lightStrength * (cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha) / distance;
+        materialSpecularColor * lightStrength * (cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha) / distance;
     gl_FragColor.a = texture2D(textureSampler, UV).a;
 }