Writing mental ray shaders by Andy Kopra Introduction Writing mental ray shaders Writing mental ray shaders Introduction Writing mental ray shaders Introduction Structure Writing mental ray shaders Introduction Structure Color Writing mental ray shaders Introduction Structure Color Light Writing mental ray shaders Introduction Structure Color Light Shape Writing mental ray shaders Introduction Structure Color Light Shape Space Writing mental ray shaders Introduction Structure Color Light Shape Space Image Czar's Waiting Room, Main Railway Station, Helsinki (Eliel Saarinen, 1910, watercolor) What is "rendering"? What is "rendering"? A description of a scene... What is "rendering"? A description of a scene... Object geometries What is "rendering"? A description of a scene... Object geometries Visual properties of objects What is "rendering"? A description of a scene... Object geometries Visual properties of objects Lighting and atmospheric environment What is "rendering"? A description of a scene... Object geometries Visual properties of objects Lighting and atmospheric environment Simulation of a camera What is "rendering"? A description of a scene... Object geometries Visual properties of objects Lighting and atmospheric environment Simulation of a camera ...is processed to produce a picture. What is "rendering"? A description of a scene... Object geometries Visual properties of objects Lighting and atmospheric environment Simulation of a camera ...is processed to produce a picture. Algorithmic parameters What is "rendering"? A description of a scene... Object geometries Visual properties of objects Lighting and atmospheric environment Simulation of a camera ...is processed to produce a picture. Algorithmic parameters Output image specifications http://www.phys.ufl.edu/~avery/course/3400/gallery/gallery_camera.html Draughtsman Drawing a Recumbent Woman (Albrecht Durer, 1525, woodcut) A light illuminates the scene An observer samples the illuminated scene mental ray mental ray shaders vendor application mental ray shaders vendor application standalone mental ray mental ray shaders vendor application standalone mental ray mental ray application shaders mental ray base shaders scene file vendor application standalone mental ray mental ray application shaders mental ray base shaders scene file vendor application standalone mental ray .mi file mental ray application shaders mental ray base shaders .xsi file standalone mental ray XSI .mi file mental ray sibase.so(.dll) shaders mental ray base shaders .3ds file standalone mental ray 3ds max .mi file mental ray 3dsmax7.dll shaders mental ray base shaders .ma/.mb file standalone mental ray Maya .mi file mental ray mayabase.so(.dll) shaders mental ray base shaders .hip file standalone mental ray Houdini .mi file mental ray Houdini shaders mental ray base shaders ray intro.mi ray -shadow on intro.mi ray -shadow on -globillum on intro.mi ray -shadow on -globillum on -caustic on intro.mi ray -shadow on -globillum on -caustic on -volume on intro.mi Exercise 1: Rendering and displaying a scene 1. In a terminal window (Command Prompt in Windows, the Terminal app in OS X, or a shell in Linux), go the MRT/scenes directory. 2. From the command line, check version: ray -version 3. Check licensing status: ray -v and exit by entering <control>-C. 4. Render the scene: ray intro.mi 5. View the rendered scene: imf_disp intro.tif & 6. Render: ray intro.mi -shadow on 7. Render: ray intro.mi -shadow on -caustic on 8. Render: ray intro.mi -shadow on -caustic on -globillum on -volume on 9. Find verbose on statement in intro.mi, equivalent to -v 5 10. Increase debugging information: ray -v 6 intro.mi Composition VIII (Wassily Kandinsky, 1923, oil)
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