Qt3D Renderer Submission

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Qt3D Renderer Submission

OpenGL Rendering

The actual OpenGL Rendering takes place in the RenderThread context. The thread is woken up when a RenderQueue is completed.

The rendering goes as follow :

• For each RenderView in the Frame queue
  • Set the Viewport
  • Set the Camera
  • Clear the scene
  • For each RenderCommand in the RenderView
    • Create and bind the RenderCommand's VAO if it doesn't already exists for a given MeshData
    • Bind the OpenGLProgram to use for the given Material/RenderPass/Technique
    • Set the attributes
    • Release the VAO
    • Set the DrawState to be used for the current Material/RenderPass/Technique
    • Set the Mesh matrix
    • Set the Mesh Material
    • Set the uniforms for the given Material
    • Bind the VAO
    • OpenGL draw call
    • Release and Destroy VAO