One simple question!

[zhangfq-chemistry]

I cannot understand PBRInstancedMaterial. Is it a simple shader to replace lightEntity? Is there a simply way to set Env Light such as "lightEntity = new Qt3DCore::QEntity(camera())"? I saw the color information has been transferred to Klein::ConcretePointsRenderer/Klein::ConcreteLinesRenderer, and so each geometry owns its material. Thanks!

// Add PBR material
auto pointsMaterial = new Klein::PBRInstancedMaterial(rootEntity);
pointsMaterial->setUseInstanceColor(true);
pointsMaterial->setRoughness(1.0f);
pointsMaterial->setMetalness(0.0f);
pointsMaterial->setEnvLightBrdf(brdfMap);
pointsMaterial->setEnvLightIntensity(1.0f);

[unclejimbo]

Hi @zhangfq-chemistry, PBRInstancedMaterial uses gpu instancing to render a bunch of meshes with different transform matrices, which is exactly what ConrectePoints/Lines do (render lots of spheres or cylinders). Environment lighting is another issue. I sort of just hacked the envlight properties into the PBR materials by adding the QParameters into BasePBRMaterial in order to update the uniform buffers. The way I did it is because, as long as I recall, it's a bit hard to update the uniform buffers without a material like QEnvironmentLight by only using the qt3d public api. Maybe you could give it a try though.