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-rw-r--r--client/shaders/nodes_shader/opengl_fragment.glsl7
1 files changed, 6 insertions, 1 deletions
diff --git a/client/shaders/nodes_shader/opengl_fragment.glsl b/client/shaders/nodes_shader/opengl_fragment.glsl
index 2a1cbc568..6dc96eb48 100644
--- a/client/shaders/nodes_shader/opengl_fragment.glsl
+++ b/client/shaders/nodes_shader/opengl_fragment.glsl
@@ -87,7 +87,12 @@ vec4 base = texture2D(baseTexture, uv).rgba;
vec3 E = normalize(eyeVec);
float specular = pow(clamp(dot(reflect(L, bump.xyz), E), 0.0, 1.0),0.5);
float diffuse = dot(E,bump.xyz);
- color = 0.05*base.rgb + diffuse*base.rgb + 0.2*specular*base.rgb;
+ /* Mathematic optimization
+ * Original: color = 0.05*base.rgb + diffuse*base.rgb + 0.2*specular*base.rgb;
+ * This optimization save 2 multiplications (orig: 4 multiplications + 3 additions
+ * end: 2 multiplications + 3 additions)
+ */
+ color = (0.05 + diffuse + 0.2 * specular) * base.rgb;
} else {
color = base.rgb;
}