Divide pi out of light color

bmolyneaux · web-flow · commit d251fe844293 · 2025-01-12T20:13:49.000-08:00
This should have been updated in #7568
diff --git a/tutorials/shaders/shader_reference/spatial_shader.rst b/tutorials/shaders/shader_reference/spatial_shader.rst
@@ -434,7 +434,7 @@ Below is an example of a custom ``light()`` function using a Lambertian lighting
 .. code-block:: glsl
 
     void light() {
-        DIFFUSE_LIGHT += clamp(dot(NORMAL, LIGHT), 0.0, 1.0) * ATTENUATION * LIGHT_COLOR;
+        DIFFUSE_LIGHT += clamp(dot(NORMAL, LIGHT), 0.0, 1.0) * ATTENUATION * LIGHT_COLOR / PI;
     }
 
 If you want the lights to add together, add the light contribution to ``DIFFUSE_LIGHT`` using ``+=``, rather than overwriting it.

Original file line number	Diff line number	Diff line change
@@ -434,7 +434,7 @@ Below is an example of a custom ``light()`` function using a Lambertian lighting
`434`	`434`	`.. code-block:: glsl`
`435`	`435`
`436`	`436`	`void light() {`
`437`		`- DIFFUSE_LIGHT += clamp(dot(NORMAL, LIGHT), 0.0, 1.0) * ATTENUATION * LIGHT_COLOR;`
	`437`	`+ DIFFUSE_LIGHT += clamp(dot(NORMAL, LIGHT), 0.0, 1.0) * ATTENUATION * LIGHT_COLOR / PI;`
`438`	`438`	`}`
`439`	`439`
`440`	`440`	If you want the lights to add together, add the light contribution to ``DIFFUSE_LIGHT`` using ``+=``, rather than overwriting it.