source/blender/draw/engines/eevee/shaders/lightprobe_cube_display_frag.glsl


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flat in int pid;
in vec3 worldNormal;
in vec3 worldPosition;

out vec4 FragColor;

void main()
{
	vec3 V = (ProjectionMatrix[3][3] == 0.0) /* if perspective */
	            ? normalize(cameraPos - worldPosition)
	            : cameraForward;
	vec3 N = normalize(worldNormal);
	FragColor = vec4(textureLod_octahedron(probeCubes, vec4(reflect(-V, N), pid), 0.0, lodCubeMax).rgb, 1.0);
}