1 files changed, 4 insertions, 4 deletions
diff --git a/src/datavisualization/engine/shaders/surfaceFlat.vert b/src/datavisualization/engine/shaders/surfaceFlat.vert
index 0d39f6bc..102bea78 100644
--- a/src/datavisualization/engine/shaders/surfaceFlat.vert
+++ b/src/datavisualization/engine/shaders/surfaceFlat.vert
@@ -20,10 +20,10 @@ varying highp vec3 coords_mdl;
 void main() {
     gl_Position = MVP * vec4(vertexPosition_mdl, 1.0);
     coords_mdl = vertexPosition_mdl;
-    position_wrld = (M * vec4(vertexPosition_mdl, 1.0)).xyz;
-    vec3 vertexPosition_cmr = (V * M * vec4(vertexPosition_mdl, 1.0)).xyz;
+    position_wrld = vec4(M * vec4(vertexPosition_mdl, 1.0)).xyz;
+    vec3 vertexPosition_cmr = vec4(V * M * vec4(vertexPosition_mdl, 1.0)).xyz;
     eyeDirection_cmr = vec3(0.0, 0.0, 0.0) - vertexPosition_cmr;
-    vec3 lightPosition_cmr = (V * vec4(lightPosition_wrld, 1.0)).xyz;
+    vec3 lightPosition_cmr = vec4(V * vec4(lightPosition_wrld, 1.0)).xyz;
     lightDirection_cmr = lightPosition_cmr + eyeDirection_cmr;
-    normal_cmr = (V * itM * vec4(vertexNormal_mdl, 0.0)).xyz;
+    normal_cmr = vec4(V * itM * vec4(vertexNormal_mdl, 0.0)).xyz;
 }