Get Rendering with mental ray® PDF

By Thomas Driemeyer (auth.)

ISBN-10: 3211834036

ISBN-13: 9783211834039

ISBN-10: 3709136970

ISBN-13: 9783709136973

Psychological ray is the top rendering engine for producing photorealistic photographs, outfitted into many 3D pix purposes. This e-book, written via the psychological ray software program venture chief, provides a basic creation into rendering with psychological ray, in addition to step by step recipes for growing complex results, and advice and tips for pro clients. A entire definition of psychological ray’s scene description language and the normal shader libraries are integrated and used because the foundation for all examples.

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Extra resources for Rendering with mental ray®

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1 50 44 1 800 800 The only difference in the camera is the introduction of a lens statement naming the physicaLlenLdof lens shader, along with its parameters. 65 (remember that the camera always looks down the negative Z axis in camera space). This is roughly the distance of the frontmost corner of the cube to the camera. The other shader parameter is radius, which specifies the radius of the lens. Larger numbers make the scene more blurry. 1 is chosen ta prevent the result from becoming too myopic despite the rather large field of view of the camera and the closeness of the cube.

Highlights on brushed aluminum, for example, are stretched against the brushing direction. More precisely, the direction is based on surface derivatives, which provide directional information in UV coordinates on the surface. This is also called anisotropic shading. ) The "specular" contribution used in the Phong and Blinn shading models is actually named incorrectly. The term "specular" implies a mirror direction, but what these shaders really do is a direct glossy reflection of light (with the specular exponent specifying the glossiness), as well as mirror reflection of indirect light.

If multiple lights are given, multiple diffuse and specular contributions are taken into account, one from each light. The angle brackets indicate that this parameter accepts lists; they may not be omitted. mental ray represents colors as RGBA colors, giving red, green, blue, and alpha components as four floating-point numbers, in RGBA order. The RGB components specify the color; (O, O, O) is black and (1, 1, 1) is white. Colors are not restricted to this range and can have any value, even negative; this can be used for special effects like extra-bright light sources or negative light sources (sometimes called darklights or light suckers).

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Rendering with mental ray® by Thomas Driemeyer (auth.)

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