Method applyShadowType

Samples/ShaderSystem/src/ShaderSystem.cpp:847–939

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//-----------------------------------------------------------------------
void Sample_ShaderSystem::applyShadowType(int menuIndex)
{
    // Grab the scheme render state.                                                
    Ogre::RTShader::RenderState* schemRenderState = mShaderGenerator->getRenderState(Ogre::MSN_SHADERGEN);


    // No shadow
    if (menuIndex == 0)
    {
        mSceneMgr->setShadowTechnique(SHADOWTYPE_NONE);

#ifdef RTSHADER_SYSTEM_BUILD_EXT_SHADERS
        if (auto srs = schemRenderState->getSubRenderState(SRS_SHADOW_MAPPING))
        {
            schemRenderState->removeSubRenderState(srs);
        }
#endif

        mTrayMgr->moveWidgetToTray(mDirLightCheckBox, TL_TOPLEFT, 1);
        mTrayMgr->moveWidgetToTray(mPointLightCheckBox, TL_TOPLEFT, 2);
        mTrayMgr->moveWidgetToTray(mSpotLightCheckBox, TL_TOPLEFT, 3);
        
        mDirLightCheckBox->show();
        mPointLightCheckBox->show();
        mSpotLightCheckBox->show();

    }

#ifdef RTSHADER_SYSTEM_BUILD_EXT_SHADERS
    // Integrated shadow PSSM with 3 splits.
    else if (menuIndex >= 1)
    {
        auto casterMat = MaterialManager::getSingleton().getByName("PSSM/shadow_caster");
        mSceneMgr->setShadowTextureCasterMaterial(casterMat);
        mSceneMgr->setShadowTechnique(SHADOWTYPE_TEXTURE_MODULATIVE_INTEGRATED);
        mSceneMgr->setShadowFarDistance(3000);

        // 3 textures per directional light
        mSceneMgr->setShadowTextureCountPerLightType(Ogre::Light::LT_DIRECTIONAL, 3);
        mSceneMgr->setShadowTextureSettings(512, 3, PF_DEPTH16);
        mSceneMgr->setShadowTextureSelfShadow(true);

        // Leave only directional light.
        mDirLightCheckBox->setChecked(true);
        mPointLightCheckBox->setChecked(false);
        mSpotLightCheckBox->setChecked(false);

        mTrayMgr->removeWidgetFromTray(mDirLightCheckBox);
        mDirLightCheckBox->hide();

        // shadow camera setup
        PSSMShadowCameraSetup* pssmSetup = new PSSMShadowCameraSetup();
        pssmSetup->calculateSplitPoints(3, mCamera->getNearClipDistance(), mSceneMgr->getShadowFarDistance());
        pssmSetup->setSplitPadding(mCamera->getNearClipDistance()*2);
        pssmSetup->setOptimalAdjustFactor(0, 2);
        pssmSetup->setOptimalAdjustFactor(1, 1);
        pssmSetup->setOptimalAdjustFactor(2, 0.5);