OPENGL BLUEPRINT RENDERING

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MOTIVATION Blueprints / drawings in CAD/graph viewer applications Documents can contain many LINES and LINE_STRIPS Various line styles can be used (world-space widths, stippling, joints, caps...) Potential CPU bottlenecks ‣ Generating geometry for complex styles ‣ Collecting and rendering geometry Model courtesy of PTC 2
MOTIVATION Not targeting full vector graphics NV_path_rendering covers high fidelity vector graphics rendering Per-pixel quadratic Bézier evaluation Stencil & Cover pass to allow sophisticated blending Focus of this talk is rendering lines defined by traditional vertices Rendering data from OpenGL buffer objects Single-pass, but does mean not safe for blending (does self-overlap) 3
Page 1: April 4-7, 2016 | Silicon Valley OP
Page 5 and 6: LINE RASTERIZATION Representation S
Page 7 and 8: SHADER-DRIVEN LINES TECH Appearance
Page 9 and 10: SHADER-DRIVEN LINES TECH FLEXIBILIT
Page 11 and 12: SHADER-DRIVEN LINES Sample implemen
Page 13 and 14: SHADER-DRIVEN LINES Quad extrusion
Page 15 and 16: SHADER-DRIVEN LINES Depth clamping
Page 17 and 18: DISTANCE COMPUTATION Shader Tips On
Page 19 and 20: DISTANCE COMPUTATION Batching & Lat
Page 21 and 22: SMOOTH TRANSITIONS Anti-aliasing ed
Page 23 and 24: RECORDING RAW DATA Using persistent
Page 25 and 26: OUTLOOK & CONCLUSION Preserving all

OPENGL BLUEPRINT RENDERING

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