Function UpdateEmitterRenderData

engine/particle/src/particle.cpp:2081–2103

Update render data for the emitter at the specified index

    // Update render data for the emitter at the specified index
    void UpdateEmitterRenderData(HInstance instance, uint32_t emitter_index, Instance* inst, Emitter* emitter, dmParticleDDF::Emitter* ddf, float dt)
    {
        EmitterRenderData& render_data = emitter->m_RenderData;

        dmTransform::TransformS1 transform(Vector3(ddf->m_Position), ddf->m_Rotation, 1.0f);
        transform = dmTransform::Mul(inst->m_WorldTransform, transform);
        dmVMath::Matrix4 world = dmTransform::ToMatrix4(transform);
        dmParticle::EmitterPrototype* emitter_proto = &inst->m_Prototype->m_Emitters[emitter_index];

        render_data.m_Transform = world;
        render_data.m_Material = emitter->m_Material ? emitter->m_Material : emitter_proto->m_Material;
        render_data.m_BlendMode = emitter_proto->m_BlendMode;
        render_data.m_Texture = emitter->m_AnimationData.m_Texture;
        render_data.m_RenderConstants = emitter->m_RenderConstants.Begin();
        render_data.m_RenderConstantsSize = emitter->m_RenderConstants.Size();
        render_data.m_Instance = instance;
        render_data.m_EmitterIndex = emitter_index;
        render_data.m_Attributes = ddf->m_Attributes.m_Data;
        render_data.m_AttributeCount = ddf->m_Attributes.m_Count;

        UpdateEmitterRenderState(inst, emitter, ddf, dt);
        CalculateEmitterCullingSphere(inst, emitter, render_data.m_FrustumCullingCenter, render_data.m_FrustumCullingRadiusSq);
    }

    // Update render data for the specified emitter on an instance.
    void UpdateRenderData(HParticleContext context, HInstance instance, uint32_t emitter_index, float dt)