Teaching a Modern Graphics Pipeline Using a Shader-based Software Renderer

Transcription

1 Teaching a Modern Graphics Pipeline Using a Shader-based Software Renderer Heinrich Fink 1 Thomas Weber 1 Michael Wimmer 1 1 Institute of Computer Graphics and Algorithms, Vienna University of Technology

2 Our Introductory CG Lab Course

3 Our Introductory CG Lab Course Understand & implement a software renderer

4 Our Introductory CG Lab Course

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6 Test & explore renderer features within 3D editor

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8 Our Introductory CG Lab Course Only requires basic Java programming skills No prior experience in computer graphics necessary 3 ECTS lab course (~75 hrs per semester)

9 Our Introductory CG Lab Course Only requires basic Java programming skills No prior experience in computer graphics necessary 3 ECTS lab course (~75 hrs per semester)

10 Our Introductory CG Lab Course Only requires basic Java programming skills No prior experience in computer graphics necessary 3 ECTS lab course (~75 hrs per semester) We provide an initial software renderer framework

11 Our Introductory CG Lab Course Only requires basic Java programming skills No prior experience in computer graphics necessary 3 ECTS lab course (~75 hrs per semester) We provide an initial software renderer framework Students complete six programming assignments

12 Our Introductory CG Lab Course Only requires basic Java programming skills No prior experience in computer graphics necessary 3 ECTS lab course (~75 hrs per semester) We provide an initial software renderer framework Students complete six programming assignments Assignments complete key features of the software renderer and build upon each other

13 Our Introductory CG Lab Course Only requires basic Java programming skills No prior experience in computer graphics necessary 3 ECTS lab course (~75 hrs per semester) We provide an initial software renderer framework Students complete six programming assignments Assignments complete key features of the software renderer and build upon each other A rich 3D editor is contained within the framework and allows to experiment with the implemented solutions

14 Assignment 1 Line Rasterization

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16 Rendered directly by student s solution

17 Scene Outliner Rendered directly by student s solution

18 Scene Outliner Rendered directly by student s solution Properties & Tools

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20 + Line rasterization BresenhamRasterizer.java

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22 + Viewport mapping -1 1 Renderer.java

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24 Assignment 2 Transformations in 3D Space

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26 + 3D math Vec3.java Vec4.java Mat3.java Mat4.java

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30 + Model transformations Renderer.java ColorShader.java SceneObject.java

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33 Assignment 3 Clipping, Viewing & Projection

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35 + Vertex Color Interpolation Varyings.java BresenhamRasterizer.java ColorShader.java

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38 + View Transform Camera.java Scene.java ColorShader.java

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40 + Clipping ClippingPlane.java Clipper.java Renderer.java

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42 + Projection Transform PerspectiveProjection.java Renderer.java ColorShader.java

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44 Assignment 4 Triangle Rasterization & Culling

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47 + Back-face culling Renderer.java

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49 + Triangle Rasterization TriangleRasterizer.java Renderer.java

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51 Assignment 5 Lighting & Shading

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54 + Per-vertex diffuse reflection IlluminationModels.java PointLight.java Geometry.java LambertGouraudShader.java Scene.java

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56 + Per-fragment specular reflection IlluminationModels.java BlinnPhongShader.java Scene.java

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60 Assignment 6 Texturing & Custom Shaders

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63 + Texturing Renderer.java Varyings.java TexturedShader.java

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66 public class TexturedShader implements Shader { Sampler") public Sampler g=1, b=1) public Vec3 min=1, max=200.0f) public float public Vertex shadevertex(mesh.vertex v) public Vec3 shadefragment(varyings varyings) {...}

67 public class TexturedShader implements Shader { Sampler") public Sampler g=1, b=1) public Vec3 min=1, max=200.0f) public float public Vertex shadevertex(mesh.vertex v) public Vec3 shadefragment(varyings varyings) {...}

68 public class TexturedShader implements Shader { Sampler") public Sampler g=1, b=1) public Vec3 min=1, max=200.0f) public float public Vertex shadevertex(mesh.vertex v) public Vec3 shadefragment(varyings varyings) {...}

69 public class TexturedShader implements Shader { Sampler") public Sampler g=1, b=1) public Vec3 min=1, max=200.0f) public float public Vertex shadevertex(mesh.vertex v) public Vec3 shadefragment(varyings varyings) {...}

70 public class TexturedShader implements Shader { Sampler") public Sampler g=1, b=1) public Vec3 min=1, max=200.0f) public float public Vertex shadevertex(mesh.vertex v) public Vec3 shadefragment(varyings varyings) {...}

71 public class TexturedShader implements Shader { Sampler") public Sampler g=1, b=1) public Vec3 min=1, max=200.0f) public float public Vertex shadevertex(mesh.vertex v) public Vec3 shadefragment(varyings varyings) {...}

72 public class TexturedShader implements Shader { Sampler") public Sampler g=1, b=1) public Vec3 min=1, max=200.0f) public float public Vertex shadevertex(mesh.vertex v) public Vec3 shadefragment(varyings varyings) {...}

73 public class TexturedShader implements Shader { Sampler") public Sampler g=1, b=1) public Vec3 min=1, max=200.0f) public float public Vertex shadevertex(mesh.vertex v) public Vec3 shadefragment(varyings varyings) {...}

74 public class TexturedShader implements Shader { Sampler") public Sampler g=1, b=1) public Vec3 min=1, max=200.0f) public float public Vertex shadevertex(mesh.vertex v) public Vec3 shadefragment(varyings varyings) {...}

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76 + Own Shader Creation MyCustomShader.java

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80 Student Work 2010/2011

81 Student Work 2010/2011

82 Student Work 2010/2011

83 Student Work 2010/2011

84 Student Work 2010/2011

85 Student Work 2010/2011

86 Summary In our course undergraduate students implement fundamental features of a software renderer Our framework provides the initial code base and an interactive 3D editor around it Playful exploration of features and rich content interoperability highly motivates students

87 Heinrich Fink, Thomas Weber, Michael Wimmer,