Method createParameterBlock

Source/Falcor/Scene/Scene.cpp:746–791

    }

    void Scene::createParameterBlock()
    {
        // Create parameter block.
        ref<Program> pProgram = Program::createCompute(mpDevice, "Scene/SceneBlock.slang", "main", getSceneDefines());
        ref<const ParameterBlockReflection> pReflection = pProgram->getReflector()->getParameterBlock(kParameterBlockName);
        FALCOR_ASSERT(pReflection);

        mpSceneBlock = ParameterBlock::create(mpDevice, pReflection);
        auto var = mpSceneBlock->getRootVar();

        // Create GPU buffers.
        if (!mGeometryInstanceData.empty() &&
            (!mpGeometryInstancesBuffer || mpGeometryInstancesBuffer->getElementCount() < mGeometryInstanceData.size()))
        {
            mpGeometryInstancesBuffer = mpDevice->createStructuredBuffer(var[kGeometryInstanceBufferName], (uint32_t)mGeometryInstanceData.size(), ResourceBindFlags::ShaderResource, MemoryType::DeviceLocal, nullptr, false);
            mpGeometryInstancesBuffer->setName("Scene::mpGeometryInstancesBuffer");
        }

        if (!mMeshDesc.empty() &&
            (!mpMeshesBuffer || mpMeshesBuffer->getElementCount() < mMeshDesc.size()))
        {
            mpMeshesBuffer = mpDevice->createStructuredBuffer(var[kMeshBufferName], (uint32_t)mMeshDesc.size(), ResourceBindFlags::ShaderResource, MemoryType::DeviceLocal, nullptr, false);
            mpMeshesBuffer->setName("Scene::mpMeshesBuffer");
        }

        if (!mCurveDesc.empty() &&
            (!mpCurvesBuffer || mpCurvesBuffer->getElementCount() < mCurveDesc.size()))
        {
            mpCurvesBuffer = mpDevice->createStructuredBuffer(var[kCurveBufferName], (uint32_t)mCurveDesc.size(), ResourceBindFlags::ShaderResource, MemoryType::DeviceLocal, nullptr, false);
            mpCurvesBuffer->setName("Scene::mpCurvesBuffer");
        }

        if (!mLights.empty() &&
            (!mpLightsBuffer || mpLightsBuffer->getElementCount() < mLights.size()))
        {
            mpLightsBuffer = mpDevice->createStructuredBuffer(var[kLightsBufferName], (uint32_t)mLights.size(), ResourceBindFlags::ShaderResource, MemoryType::DeviceLocal, nullptr, false);
            mpLightsBuffer->setName("Scene::mpLightsBuffer");
        }

        if (!mGridVolumes.empty() &&
            (!mpGridVolumesBuffer || mpGridVolumesBuffer->getElementCount() < mGridVolumes.size()))
        {
            mpGridVolumesBuffer = mpDevice->createStructuredBuffer(var[kGridVolumesBufferName], (uint32_t)mGridVolumes.size(), ResourceBindFlags::ShaderResource, MemoryType::DeviceLocal, nullptr, false);
            mpGridVolumesBuffer->setName("Scene::mpGridVolumesBuffer");
        }
    }

    void Scene::bindParameterBlock()
    {