Deep 3DAlice Reyzin and Elliott PrechterWhat is Deep3D? 3D T&R Hardware Accelerator A User’s perspective Nintendo Controller input 5 DOF Camera 3D Glasses for depthA High Level PerspectiveInput Serialized Input via. Nintendo ControllerButtons A and B for forward/backwardArrow buttons for nod and shake anglesSample inputs every 100usAccumulate the number of times each input is high per frameReset accumulator when camera is updatedMath Unit Overview Number Format 17-bit Sign-Magnitude Fixed Point (8-bit whole, 8-bit decimal) Transform Representation 4x4 Fixed Point Matrices (Stored as 3x4 since last row is always 0,0,0,1) Functions Multiply and Accumulate Multiplicative Inverse Sin/Cos Calculation Matrix Multiplication Matrix/Vector Multiplication Transform GenerationTransformation Overview Draw FSM Coordinates minor FSMs for Transformation/ Rasterization Two passes, one for each eye Camera Calculates camera position & orientation from input Right eye/ left eye Transform Computation Generates transform matrix from Camera Important for abstracting other transformations Transform Application Loads triangle from ROM into Vertex Buffer Applies Camera Transformation Clipping Clips Triangle against viewing planes Projection Screen-space transformation Rounds to nearest pixels for verticesTransformation DiagramRasterization Setup PhaseCopies coordinates from vertex bufferUses math unit for 2D ClippingSignals control unit to begin transformation of next triangle Rasterization PhaseUses Bresenham’s algorithm for interpolationIn parallel with next transformationSends x,y coordinates to Video unitVideo Overview 320x240, 3-bit color Page flipping Plotter FSMResponsible for merging R, B values against white backgroundVideo DiagramExtra Features Animation Z-Buffering 24-bit Color Filled Triangles Point Light Sources Goroud Shading Texture
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