vec3 LINEARtoSRGB(vec3 linearIn)
|
{
|
#ifndef HDR
|
return pow(linearIn, vec3(1.0/2.2));
|
#else
|
return linearIn;
|
#endif
|
}
|
|
#ifdef LIGHTING_PBR
|
vec3 applyTonemapping(vec3 linearIn)
|
{
|
#ifndef HDR
|
return czm_acesTonemapping(linearIn);
|
#else
|
return linearIn;
|
#endif
|
}
|
|
vec3 computePbrLighting(czm_modelMaterial inputMaterial)
|
{
|
czm_pbrParameters pbrParameters;
|
pbrParameters.diffuseColor = inputMaterial.diffuse;
|
pbrParameters.f0 = inputMaterial.specular;
|
pbrParameters.roughness = inputMaterial.roughness;
|
|
vec3 lightColorHdr = czm_lightColorHdr;
|
|
vec3 color = inputMaterial.diffuse;
|
#ifdef HAS_NORMALS
|
color = czm_pbrLighting(
|
v_positionEC,
|
inputMaterial.normalEC,
|
czm_lightDirectionEC,
|
lightColorHdr,
|
pbrParameters
|
);
|
#endif
|
|
color *= inputMaterial.occlusion;
|
color += inputMaterial.emissive;
|
|
// Convert high-dynamic range to low-dynamic range in HDR mode
|
color = applyTonemapping(color);
|
return color;
|
}
|
#endif
|
|
void lightingStage(inout czm_modelMaterial material)
|
{
|
// Even though the lighting will only set the diffuse color,
|
// pass all other properties so further stages have access to them.
|
vec3 color = vec3(0.0);
|
|
#ifdef LIGHTING_PBR
|
color = computePbrLighting(material);
|
#else // unlit
|
color = material.diffuse;
|
#endif
|
|
color = LINEARtoSRGB(color);
|
|
material.diffuse = color;
|
}
|
