void EpicShader::SetupShaderLighting(const Light* light) const
{
if (!light) {
SetShaderUniform("lightingType", static_cast<int>(Light::LightType::GLOBAL));
} else {
// Get the light's properties
const LightProperties* lightProperty = static_cast<const LightProperties*>(light->GetPropertiesRaw());
// Select proper lighting subroutine based on the light's type.
switch(light->GetLightType()) {
case Light::LightType::POINT:
SetShaderUniform("lightingType", static_cast<int>(Light::LightType::POINT));
SetShaderUniform("pointLight.light_color", lightProperty->light_color);
SetShaderUniform("pointLight.point_position", lightProperty->point_position);
SetShaderUniform("pointLight.light_radius", lightProperty->light_radius);
break;
case Light::LightType::DIRECTIONAL:
SetShaderUniform("lightingType", static_cast<int>(Light::LightType::DIRECTIONAL));
SetShaderUniform(light->GetName() + ".light_color", lightProperty->light_color);
SetShaderUniform(light->GetName() + ".forward_direction", light->GetForwardDirection());
SetShaderUniform(light->GetName() + ".point_position", lightProperty->point_position);
break;
case Light::LightType::HEMISPHERE:
SetShaderUniform("lightingType", static_cast<int>(Light::LightType::HEMISPHERE));
SetShaderUniform(light->GetName() + ".sky_color", lightProperty->sky_color);
SetShaderUniform(light->GetName() + ".ground_color", lightProperty->ground_color);
break;
default:
std::cerr << "WARNING: Light type is not supported. Defaulting to global light. Your output may look wrong. -- Ignoring: " << static_cast<int>(light->GetLightType()) << std::endl;
SetShaderUniform("lightingType", static_cast<int>(Light::LightType::GLOBAL));
break;
}
light->SetupShaderUniforms(this);
}
UpdateAttenuationUniforms(light);
}
void BlinnPhongShader::SetupShaderLighting(const Light* light) const
{
if (!light) {
#ifndef DISABLE_OPENGL_SUBROUTINES
SetShaderSubroutine("inputLightSubroutine", "globalLightSubroutine", lightingShaderStage);
#else
SetShaderUniform("lightingType", static_cast<int>(Light::LightType::GLOBAL));
#endif
} else {
// Select proper lighting subroutine based on the light's type.
switch(light->GetLightType()) {
case Light::LightType::POINT:
#ifndef DISABLE_OPENGL_SUBROUTINES
SetShaderSubroutine("inputLightSubroutine", "pointLightSubroutine", lightingShaderStage);
#else
SetShaderUniform("lightingType", static_cast<int>(Light::LightType::POINT));
#endif
break;
default:
std::cerr << "WARNING: Light type is not supported. Defaulting to global light. Your output may look wrong. -- Ignoring: " << static_cast<int>(light->GetLightType()) << std::endl;
#ifndef DISABLE_OPENGL_SUBROUTINES
SetShaderSubroutine("inputLightSubroutine", "globalLightSubroutine", lightingShaderStage);
#else
SetShaderUniform("lightingType", static_cast<int>(Light::LightType::GLOBAL));
#endif
break;
}
// Get the light's properties and pass it into the shader.
const LightProperties* lightProperty = light->GetPropertiesRaw();
SetShaderUniform("genericLight.diffuseColor", lightProperty->diffuseColor);
SetShaderUniform("genericLight.specularColor", lightProperty->specularColor);
light->SetupShaderUniforms(this);
}
UpdateAttenuationUniforms(light);
}
