What is path rendering?

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“Stencil, then Cover”Path Fill CoveringSpecify a pathSpecify arbitrary pathtransformationProjective (4x4) allowedDepth values can be generated fordepth testingSample accessibility determinedAccessibility can be limited by anyor all ofScissor test, depth test, stenciltest, view frustum, user-definedclip planes, sample mask, stipplepattern, and window ownershipConservative covering geometryuses stencil to “cover” filled pathDetermined by prior stencil stepcover fillpath commandper-pathfill regionoperationsper-sampleoperationsper-fragment orper-sampleshadingcolorbufferpathfront-endprojectivetransformclipping &scissoringwindow, depth& stencil testsstencilupdatetypically zeroprogrammablepathshadingpathobjectsampleaccessibilitystencilbuffer
Adding Stroking to the StarAfter the filling, add a stroked “rim”to the star like this…Set some stroking parameters (one-time):glPathParameterfNV(pathObj, GL_STROKE_WIDTH_NV, 10.5);glPathParameteriNV(pathObj, GL_JOIN_STYLE_NV, GL_ROUND_NV);non-zero fill styleStroke the starStencil pathglStencilStrokePathNV(pathObj, 0x3, 0xF); // stroked samples marked“3”Cover pathglEnable(GL_STENCIL_TEST);glStencilFunc(GL_EQUAL, 3, 0xF); // update if sample marked “3”glStencilOp(GL_KEEP, GL_KEEP, GL_ZERO);glColor3f(1,1,0); // yellowglCoverStrokePathNV(pathObj, GL_BOUNDING_BOX_NV);even-odd fill style
Page 3: Mark KilgardPrincipal System Softwa
Page 6 and 7: Data visualization
Page 8 and 9: Physics simulationCUDA N-Body
Page 10 and 11: Training
Page 12 and 13: Impressive stuff
Page 14 and 15: Can GPUs render & improve the immer
Page 16 and 17: Seminal Path Rendering PaperJohn Wa
Page 18 and 19: Live DemoClassic PostScript content
Page 20 and 21: 3D Rendering vs. Path RenderingChar
Page 22 and 23: What is NV_path_rendering?OpenGL ex
Page 24 and 25: Detail on AlternativesSame results,
Page 26 and 27: GeForce 650 (Kepler) Results0.101.0
Page 28 and 29: NV_path_rendering is more than just
Page 30 and 31: Path Filling and Strokingjust filli
Page 32 and 33: Excellent Geometric Fidelity for St
Page 34 and 35: Pixel pipelineVertex pipelinePath p
Page 37 and 38: Path Rendering Example (2 of 3)Init
Page 39: “Stencil, then Cover”Path Fill
Page 43 and 44: “Stencil, then Cover”Path Strok
Page 45 and 46: Handling Common Path RenderingFunct
Page 47 and 48: Projective Path Rendering Support C
Page 49 and 50: Accessible Samples of a Transformed
Page 51 and 52: Demo
Page 53 and 54: Without glPathStencilDepthOffsetBad
Page 55 and 56: Clip Planes Work with Path Renderin
Page 57 and 58: Rendering Paths Clipped toSome Othe
Page 59 and 60: Arbitrary Programmable GPU Shading
Page 61 and 62: Anti-aliasing DiscussionGood anti-a
Page 63 and 64: RealFlashScenesame scene, GPU-rende
Page 65 and 66: Improved Color Space:sRGB Path Rend
Page 67 and 68: Learning NV_path_renderingWhite pap
Page 69 and 70: Whitepapers“Getting Started with
Page 71 and 72: SDK Example Walkthrough (1)pr_basic
Page 73 and 74: SDK Example Walkthrough (3)pr_text_
Page 75 and 76: ConclusionsGPU-acceleration of 2D r
Page 77 and 78: More InformationBest drivers: OpenG
Page 79: Other OpenGL-relatedNVIDIA Sessions

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