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

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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

5

6 Test & explore renderer features within 3D editor

7

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

15

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

19

20 + Line rasterization BresenhamRasterizer.java

21

22 + Viewport mapping -1 1 Renderer.java

23

24 Assignment 2 Transformations in 3D Space

25

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

27

28

29

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

31

32

33 Assignment 3 Clipping, Viewing & Projection

34

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

36

37

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

39

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

41

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

43

44 Assignment 4 Triangle Rasterization & Culling

45

46

47 + Back-face culling Renderer.java

48

49 + Triangle Rasterization TriangleRasterizer.java Renderer.java

50

51 Assignment 5 Lighting & Shading

52

53

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

55

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

57

58

59

60 Assignment 6 Texturing & Custom Shaders

61

62

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

64

65

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) {...}

75

76 + Own Shader Creation MyCustomShader.java

77

78

79

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,

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