Raycast Rendering Maya 2013

Size: px
Start display at page:

Download "Raycast Rendering Maya 2013"

Transcription

1 Michael O'Rourke Raycast Rendering Maya 2013 (See also the Intro to Lights and Rendering tutorial for an introduction to the basics of rendering an image) Concept There are several algorithms (software approaches) to rendering a picture of 3D scene A common algorithm is raycasting Also known sometimes as scan-line rendering This is Maya s default software rendering approach Maya calls it simply Maya Software Raycasting is simple but gives reasonable results Other rendering algorithms can yield specialized looks For example: vector rendering Other rendering algorithms can yield more physically accurate renderings For example: raytracing and global illumination See the tutorials in this set for each of those renderers Here, we introduce Raycasting The algorithm goes line by line through each pixel of the image

2 (Hence the term scan-line rendering ) For each pixel of the screen a single beam/ray is cast from the camera location through the pixel until it hits the surface of a model in the scene The ray stops when it hits that surface -- that is, this ray does not bounce off or pass through surfaces This means: It cannot render reflections or refractions at all It can render transparency, but not with 100% physical accuracy To get these effects more accurately, you can use one of the other rendering algorithms Big advantage of raycasting: It can be much faster than raytracing or global illumination, because it is much simpler So If your scene does not require the slower algorithms, you can use the raycasting algorithm Setup Model a simple scene with a few primitives and a floor plane and some lighting

3 and some shaders Or retrieve an earlier scene Set Parameters for Rendered Picture Before rendering, you should define certain important parameters for the rendering Maya provides default parameters, but here we will set our own values >Window >Rendering Editors >Render Settings Inside the Render Settings window First, at the very top of the window, Make sure Render using is set to Maya Software This is Maya s default and Maya s raycaster Go to the Common tab >File Output > Image Format (Maya.iff,.jpeg,.tiff,.tga, etc) If bringing your file to another program (e.g., Photoshop, Premiere), do NOT use Maya.iff format, since most programs can t read it Leave the rest of the settings as is >Image Size Presets = 640x480 This is a standard video resolution For Digital Video Width = 720, Height = 480 Pixel Aspect Ratio = 0.9 (More about this is the Creating a DV-format Movie tutorial) Go to the Maya Software tab >Anti-aliasing Quality Quality = Preview Quality for testing

4 Quality = Intermediate for better rendering Other settings may or may not be necessary depending on your situation Leave all other settings in the Render Settings at their defaults Test Render your Frame See the Rendering Test Renders tutorial for details Things you can t do in Raycasting Reflections Make a Phong material In its Attribute Editor, go to >Specular Shading Notice that Reflectivity is 0.5 by default That is 50% reflective Render it as above There are no reflections at all! To get reflections, you must use the raytracing algorithm which is an option within the Maya Software algorithm Refractions This is the bending of light as it passes through a material Classic example: a straw in a glass of water For the same Phong material you made, Look in its Attribute Editor Under the >Raytrace Options tab Again, you have to use raytracing to get this effect Diffuse reflection of light This is the boucing of light off a non-reflective surface For example, off a concrete wall For this effect you need to use either Global illumination or

5 final gathering (which is a simplified form of global illumination) See the tutorials on those topics for details

Chapter 11. Caustics and Global Illumination

Chapter 11. Caustics and Global Illumination 11 and Global Illumination Chapter 11 Direct illumination occurs when a light source directly illuminates an object or objects in a scene. Indirect illumination occurs if light illuminates objects by reflection

More information

Cast Shadows Maya 2013

Cast Shadows Maya 2013 2000-2012 Michael O'Rourke Cast Shadows Maya 2013 Concept Cast shadows are defined on a per-light basis, because shadow-casting computations can be time-consuming Cast shadows are off by default in Maya,

More information

SAMPLING AND NOISE. Increasing the number of samples per pixel gives an anti-aliased image which better represents the actual scene.

SAMPLING AND NOISE. Increasing the number of samples per pixel gives an anti-aliased image which better represents the actual scene. SAMPLING AND NOISE When generating an image, Mantra must determine a color value for each pixel by examining the scene behind the image plane. Mantra achieves this by sending out a number of rays from

More information

Photorealism: Ray Tracing

Photorealism: Ray Tracing Photorealism: Ray Tracing Reading Assignment: Chapter 13 Local vs. Global Illumination Local Illumination depends on local object and light sources only Global Illumination at a point can depend on any

More information

Ray Tracing. CSCI 420 Computer Graphics Lecture 15. Ray Casting Shadow Rays Reflection and Transmission [Ch ]

Ray Tracing. CSCI 420 Computer Graphics Lecture 15. Ray Casting Shadow Rays Reflection and Transmission [Ch ] CSCI 420 Computer Graphics Lecture 15 Ray Tracing Ray Casting Shadow Rays Reflection and Transmission [Ch. 13.2-13.3] Jernej Barbic University of Southern California 1 Local Illumination Object illuminations

More information

Ray Tracing. Kjetil Babington

Ray Tracing. Kjetil Babington Ray Tracing Kjetil Babington 21.10.2011 1 Introduction What is Ray Tracing? Act of tracing a ray through some scene Not necessarily for rendering Rendering with Ray Tracing Ray Tracing is a global illumination

More information

Turn your movie file into the homework folder on the server called Lights, Camera, Action.

Turn your movie file into the homework folder on the server called Lights, Camera, Action. CS32 W11 Homework 3: Due MONDAY, APRIL 18 Now let s put the ball in a world of your making and have some fun. Create a simple AND WE MEAN SIMPLE environment for one of your ball bounces. You will assign

More information

Ray-Tracing. Misha Kazhdan

Ray-Tracing. Misha Kazhdan Ray-Tracing Misha Kazhdan Ray-Tracing In graphics, we often represent the surface of a 3D shape by a set of triangles. Goal: Ray-Tracing Take a collection of triangles representing a 3D scene and render

More information

Intro to Lights & Rendering Maya 2013

Intro to Lights & Rendering Maya 2013 2000 2012 Michael O'Rourke Intro to Lights & Rendering Maya 2013 Concepts You must define lights in order for your scene/models to be visible Same as the real world if there is zero light, you can t see

More information

COMP371 COMPUTER GRAPHICS

COMP371 COMPUTER GRAPHICS COMP371 COMPUTER GRAPHICS SESSION 15 RAY TRACING 1 Announcements Programming Assignment 3 out today - overview @ end of the class Ray Tracing 2 Lecture Overview Review of last class Ray Tracing 3 Local

More information

Me Again! Peter Chapman. if it s important / time-sensitive

Me Again! Peter Chapman.  if it s important / time-sensitive Me Again! Peter Chapman P.Chapman1@bradford.ac.uk pchapman86@gmail.com if it s important / time-sensitive Issues? Working on something specific? Need some direction? Don t hesitate to get in touch http://peter-chapman.co.uk/teaching

More information

After saving out your Rhino model as an IGES file: Open up Maya Go to File - Import

After saving out your Rhino model as an IGES file: Open up Maya Go to File - Import After saving out your Rhino model as an IGES file: Open up Maya Go to File - Import Select your file at the saved location Click Import *NOTE: If your model imports rotated 90 degrees, you can change the

More information

STARTING COMPOSITING PROJECT

STARTING COMPOSITING PROJECT STARTING COMPOSITING PROJECT This tutorial is divided in two parts: Lighting in Maya and compositing in Nuke. Only describe basics techniques but it is your task to learn them and go beyond. These are

More information

Chapter 23- UV Texture Mapping

Chapter 23- UV Texture Mapping Chapter 23- UV Texture Mapping Since games need to be able to process operations as fast as possible, traditional rendering techniques (specular, ray tracing reflections and refractions) cannot typically

More information

Lighting and Shading

Lighting and Shading Lighting and Shading Today: Local Illumination Solving the rendering equation is too expensive First do local illumination Then hack in reflections and shadows Local Shading: Notation light intensity in,

More information

Lighting. To do. Course Outline. This Lecture. Continue to work on ray programming assignment Start thinking about final project

Lighting. To do. Course Outline. This Lecture. Continue to work on ray programming assignment Start thinking about final project To do Continue to work on ray programming assignment Start thinking about final project Lighting Course Outline 3D Graphics Pipeline Modeling (Creating 3D Geometry) Mesh; modeling; sampling; Interaction

More information

There are many kinds of surface shaders, from those that affect basic surface color, to ones that apply bitmap textures and displacement.

There are many kinds of surface shaders, from those that affect basic surface color, to ones that apply bitmap textures and displacement. mental ray Overview Mental ray is a powerful renderer which is based on a scene description language. You can use it as a standalone renderer, or even better, integrated with 3D applications. In 3D applications,

More information

Basic Rendering Techniques Part B

Basic Rendering Techniques Part B Basic Rendering Techniques Part B Using Materials in 3d Max The simplest method for changing g the default gray color of a 3d object is to apply hue to the object using the diffuse color feature. The physical

More information

critical theory Computer Science

critical theory Computer Science Art/Science Shading, Materials, Collaboration Textures Example title Artists In the recommend real world, two the main following: factors determine the appearance of a surface: basic understanding what

More information

Caustics - Mental Ray

Caustics - Mental Ray Caustics - Mental Ray (Working with real caustic generation) In this tutorial we are going to go over some advanced lighting techniques for creating realistic caustic effects. Caustics are the bent reflections

More information

So far, we have considered only local models of illumination; they only account for incident light coming directly from the light sources.

So far, we have considered only local models of illumination; they only account for incident light coming directly from the light sources. 11 11.1 Basics So far, we have considered only local models of illumination; they only account for incident light coming directly from the light sources. Global models include incident light that arrives

More information

I have a meeting with Peter Lee and Bob Cosgrove on Wednesday to discuss the future of the cluster. Computer Graphics

I have a meeting with Peter Lee and Bob Cosgrove on Wednesday to discuss the future of the cluster. Computer Graphics Announcements Assignment 4 will be out later today Problem Set 3 is due today or tomorrow by 9am in my mail box (4 th floor NSH) How are the machines working out? I have a meeting with Peter Lee and Bob

More information

CS 325 Computer Graphics

CS 325 Computer Graphics CS 325 Computer Graphics 04 / 02 / 2012 Instructor: Michael Eckmann Today s Topics Questions? Comments? Illumination modelling Ambient, Diffuse, Specular Reflection Surface Rendering / Shading models Flat

More information

Intro to Ray-Tracing & Ray-Surface Acceleration

Intro to Ray-Tracing & Ray-Surface Acceleration Lecture 12 & 13: Intro to Ray-Tracing & Ray-Surface Acceleration Computer Graphics and Imaging UC Berkeley Course Roadmap Rasterization Pipeline Core Concepts Sampling Antialiasing Transforms Geometric

More information

Computer Graphics 1. Chapter 7 (June 17th, 2010, 2-4pm): Shading and rendering. LMU München Medieninformatik Andreas Butz Computergraphik 1 SS2010

Computer Graphics 1. Chapter 7 (June 17th, 2010, 2-4pm): Shading and rendering. LMU München Medieninformatik Andreas Butz Computergraphik 1 SS2010 Computer Graphics 1 Chapter 7 (June 17th, 2010, 2-4pm): Shading and rendering 1 The 3D rendering pipeline (our version for this class) 3D models in model coordinates 3D models in world coordinates 2D Polygons

More information

4) Finish the spline here. To complete the spline, double click the last point or select the spline tool again.

4) Finish the spline here. To complete the spline, double click the last point or select the spline tool again. 1) Select the line tool 3) Move the cursor along the X direction (be careful to stay on the X axis alignment so that the line is perpendicular) and click for the second point of the line. Type 0.5 for

More information

Materials in Kerkythea ~ a beginners guide

Materials in Kerkythea ~ a beginners guide Materials in Kerkythea ~ a beginners guide I started using Kerkythea as a way of rendering SketchUP models. I quickly found that I needed to be able to create and work with materials. I read Patrick Nieborg

More information

Chapter 9- Ray-Tracing

Chapter 9- Ray-Tracing Ray-tracing is used to produce mirrored and reflective surfaces. It is also being used to create transparency and refraction (bending of images through transparent surfaceslike a magnifying glass or a

More information

Announcements. Written Assignment 2 out (due March 8) Computer Graphics

Announcements. Written Assignment 2 out (due March 8) Computer Graphics Announcements Written Assignment 2 out (due March 8) 1 Advanced Ray Tracing (Recursive) Ray Tracing Antialiasing Motion Blur Distribution Ray Tracing Ray Tracing and Radiosity Assumptions Simple shading

More information

MASY Easy Caustics. A Manual

MASY Easy Caustics. A Manual MASY Easy Caustics A Manual Table of Contents Introduction...3 Chapter 1: The Base Rig...4 Chapter 2: The Props and Scenes...8 Introduction Thank you for purchasing the Easy Caustics lighting pack for

More information

Indirect Illumination

Indirect Illumination Indirect Illumination Michael Kazhdan (601.457/657) HB Ch. 14.1, 14.2 FvDFH 16.1, 16.2 Surface Illumination Calculation Multiple light source: 2 Viewer N 1 V I = I E + K A I A + K D N, + K S V, R n I Overview

More information

Render methods, Compositing, Post-process and NPR in NX Render

Render methods, Compositing, Post-process and NPR in NX Render Render methods, Compositing, Post-process and NPR in NX Render Overview What makes a good rendered image Render methods in NX Render Foregrounds and backgrounds Post-processing effects Compositing models

More information

Chapter 7 - Light, Materials, Appearance

Chapter 7 - Light, Materials, Appearance Chapter 7 - Light, Materials, Appearance Types of light in nature and in CG Shadows Using lights in CG Illumination models Textures and maps Procedural surface descriptions Literature: E. Angel/D. Shreiner,

More information

Ray Tracer Due date: April 27, 2011

Ray Tracer Due date: April 27, 2011 Computer graphics Assignment 4 1 Overview Ray Tracer Due date: April 27, 2011 In this assignment you will implement the camera and several primitive objects for a ray tracer, and a basic ray tracing algorithm.

More information

Problem Set 4 Part 1 CMSC 427 Distributed: Thursday, November 1, 2007 Due: Tuesday, November 20, 2007

Problem Set 4 Part 1 CMSC 427 Distributed: Thursday, November 1, 2007 Due: Tuesday, November 20, 2007 Problem Set 4 Part 1 CMSC 427 Distributed: Thursday, November 1, 2007 Due: Tuesday, November 20, 2007 Programming For this assignment you will write a simple ray tracer. It will be written in C++ without

More information

An Introduction to Maya. Maya. Used in industrial design, CAD, computer games and motion picture effects. The ambition is what get

An Introduction to Maya. Maya. Used in industrial design, CAD, computer games and motion picture effects. The ambition is what get An Introduction to Maya Gustav Taxén gustavt@nada.kth.se 2D1640 Grafik och Interaktionsprogrammering VT 2006 Maya Used in industrial design, CAD, computer games and motion picture effects Special focus

More information

COMP 4801 Final Year Project. Ray Tracing for Computer Graphics. Final Project Report FYP Runjing Liu. Advised by. Dr. L.Y.

COMP 4801 Final Year Project. Ray Tracing for Computer Graphics. Final Project Report FYP Runjing Liu. Advised by. Dr. L.Y. COMP 4801 Final Year Project Ray Tracing for Computer Graphics Final Project Report FYP 15014 by Runjing Liu Advised by Dr. L.Y. Wei 1 Abstract The goal of this project was to use ray tracing in a rendering

More information

Global Illumination. Why Global Illumination. Pros/Cons and Applications. What s Global Illumination

Global Illumination. Why Global Illumination. Pros/Cons and Applications. What s Global Illumination Global Illumination Why Global Illumination Last lecture Basic rendering concepts Primitive-based rendering Today: Global illumination Ray Tracing, and Radiosity (Light-based rendering) What s Global Illumination

More information

Chapter 4- Blender Render Engines

Chapter 4- Blender Render Engines Chapter 4- Render Engines What is a Render Engine? As you make your 3D models in, your goal will probably be to generate (render) an image or a movie as a final result. The software that determines how

More information

CS 464 Review. Review of Computer Graphics for Final Exam

CS 464 Review. Review of Computer Graphics for Final Exam CS 464 Review Review of Computer Graphics for Final Exam Goal: Draw 3D Scenes on Display Device 3D Scene Abstract Model Framebuffer Matrix of Screen Pixels In Computer Graphics: If it looks right then

More information

Illumination. Michael Kazhdan ( /657) HB Ch. 14.1, 14.2 FvDFH 16.1, 16.2

Illumination. Michael Kazhdan ( /657) HB Ch. 14.1, 14.2 FvDFH 16.1, 16.2 Illumination Michael Kazhdan (601.457/657) HB Ch. 14.1, 14.2 FvDFH 16.1, 16.2 Ray Casting Image RayCast(Camera camera, Scene scene, int width, int height) { Image image = new Image(width, height); for

More information

LIGHTING - 1. Note. Lights. Ambient occlusion

LIGHTING - 1. Note. Lights. Ambient occlusion Note LIGHTING - 1 The creation and use of lights varies greatly between the default Blender renderer and the Cycles renderer. This section refers only to simple lighting in the default renderer. Lights

More information

Recursion and Data Structures in Computer Graphics. Ray Tracing

Recursion and Data Structures in Computer Graphics. Ray Tracing Recursion and Data Structures in Computer Graphics Ray Tracing 1 Forward Ray Tracing imagine that you take a picture of a room using a camera exactly what is the camera sensing? light reflected from the

More information

Consider a partially transparent object that is illuminated with two lights, one visible from each side of the object. Start with a ray from the eye

Consider a partially transparent object that is illuminated with two lights, one visible from each side of the object. Start with a ray from the eye Ray Tracing What was the rendering equation? Motivate & list the terms. Relate the rendering equation to forward ray tracing. Why is forward ray tracing not good for image formation? What is the difference

More information

CS-184: Computer Graphics. Administrative

CS-184: Computer Graphics. Administrative CS-184: Computer Graphics Lecture #10: Raytracing Prof. James O Brien University of California, Berkeley V2005-10-1.1 Administrative Prof. O Brien away this Thursday and Friday Available after class today

More information

Animation Basics. Learning Objectives

Animation Basics. Learning Objectives Animation Basics Learning Objectives After completing this chapter, you will be able to: Work with the time slider Understand animation playback controls Understand animation and time controls Morph compound

More information

Illumination Algorithms

Illumination Algorithms Global Illumination Illumination Algorithms Digital Lighting and Rendering CGT 340 The goal of global illumination is to model all possible paths of light to the camera. Global Illumination Global illumination

More information

BIBIN FX.COM RENDERING BOTTLES IN MAYA MOSTAFA TALEBI BIBINFX.COM MOSTAFATALEBI.WEEBLY.COM

BIBIN FX.COM RENDERING BOTTLES IN MAYA MOSTAFA TALEBI BIBINFX.COM MOSTAFATALEBI.WEEBLY.COM BIBIN FX.COM MOSTAFATALEBI.WEEBLY.COM MOSTAFA TALEBI BIBINFX.COM MOSTAFA TALEBI RENDERING BOTTLES IN MAYA Hello This tutorial is mine, there is no other extra reference to be used in this tutorial.in this

More information

Programming projects. Assignment 1: Basic ray tracer. Assignment 1: Basic ray tracer. Assignment 1: Basic ray tracer. Assignment 1: Basic ray tracer

Programming projects. Assignment 1: Basic ray tracer. Assignment 1: Basic ray tracer. Assignment 1: Basic ray tracer. Assignment 1: Basic ray tracer Programming projects Rendering Algorithms Spring 2010 Matthias Zwicker Universität Bern Description of assignments on class webpage Use programming language and environment of your choice We recommend

More information

Introduction Ray tracing basics Advanced topics (shading) Advanced topics (geometry) Graphics 2010/2011, 4th quarter. Lecture 11: Ray tracing

Introduction Ray tracing basics Advanced topics (shading) Advanced topics (geometry) Graphics 2010/2011, 4th quarter. Lecture 11: Ray tracing Lecture 11 Ray tracing Introduction Projection vs. ray tracing Projection Ray tracing Rendering Projection vs. ray tracing Projection Ray tracing Basic methods for image generation Major areas of computer

More information

Computer Graphics. Ray Tracing. Based on slides by Dianna Xu, Bryn Mawr College

Computer Graphics. Ray Tracing. Based on slides by Dianna Xu, Bryn Mawr College Computer Graphics Ray Tracing Based on slides by Dianna Xu, Bryn Mawr College Ray Tracing Example Created by Anto Matkovic Ray Tracing Example Ray Tracing Example Ray Tracing Most light rays do not reach

More information

Photoshop PSD Export. Basic Tab. Click here to expand Table of Contents... Basic Tab Additional Shading Tab Material Tab Motion Tab Geometry Tab

Photoshop PSD Export. Basic Tab. Click here to expand Table of Contents... Basic Tab Additional Shading Tab Material Tab Motion Tab Geometry Tab Photoshop PSD Export Click here to expand Table of Contents... Basic Tab Additional Shading Tab Material Tab Motion Tab Geometry Tab The Photoshop PSD Export image filter is an image saver masquerading

More information

Ø Sampling Theory" Ø Fourier Analysis Ø Anti-aliasing Ø Supersampling Strategies" Ø The Hall illumination model. Ø Original ray tracing paper

Ø Sampling Theory Ø Fourier Analysis Ø Anti-aliasing Ø Supersampling Strategies Ø The Hall illumination model. Ø Original ray tracing paper CS 431/636 Advanced Rendering Techniques Ø Dr. David Breen Ø Korman 105D Ø Wednesday 6PM 8:50PM Presentation 6 5/16/12 Questions from ast Time? Ø Sampling Theory" Ø Fourier Analysis Ø Anti-aliasing Ø Supersampling

More information

Advanced Maya Texturing and Lighting

Advanced Maya Texturing and Lighting Advanced Maya Texturing and Lighting Lanier, Lee ISBN-13: 9780470292730 Table of Contents Introduction. Chapter 1 Understanding Lighting, Color, and Composition. Understanding the Art of Lighting. Using

More information

Ray Tracing Part 1. CSC418/2504 Introduction to Computer Graphics. TA: Muhammed Anwar & Kevin Gibson

Ray Tracing Part 1. CSC418/2504 Introduction to Computer Graphics. TA: Muhammed Anwar & Kevin Gibson Ray Tracing Part 1 CSC418/2504 Introduction to Computer Graphics TA: Muhammed Anwar & Kevin Gibson Email: manwar@cs.toronto.edu Overview Introduction / Motivation Rasterization vs Ray Tracing Basic Pseudocode

More information

Movie: For The Birds. Announcements. Ray Tracing 1. Programming 2 Recap. Programming 3 Info Test data for part 1 (Lines) is available

Movie: For The Birds. Announcements. Ray Tracing 1. Programming 2 Recap. Programming 3 Info Test data for part 1 (Lines) is available Now Playing: Movie: For The Birds Pixar, 2000 Liar Built To Spill from You In Reverse Released April 11, 2006 Ray Tracing 1 Rick Skarbez, Instructor COMP 575 November 1, 2007 Announcements Programming

More information

Advanced Maya e Texturing. and Lighting. Second Edition WILEY PUBLISHING, INC.

Advanced Maya e Texturing. and Lighting. Second Edition WILEY PUBLISHING, INC. Advanced Maya e Texturing and Lighting Second Edition Lee Lanier WILEY PUBLISHING, INC. Contents Introduction xvi Chapter 1 Understanding Lighting, Color, and Composition 1 Understanding the Art of Lighting

More information

MR Shaders Dielectric Materials Rendering Glass and Simple Caustics

MR Shaders Dielectric Materials Rendering Glass and Simple Caustics Dielectric Material This shader is a physically based material shader that can be used to simulate dielectric media such as glass, water, and other liquids. The shader uses Fresnel's formulas for dielectric

More information

Lecture 18: Primer on Ray Tracing Techniques

Lecture 18: Primer on Ray Tracing Techniques Lecture 18: Primer on Ray Tracing Techniques 6.172: Performance Engineering of Software Systems Joshua Slocum November 16, 2010 A Little Background Image rendering technique Simulate rays of light - ray

More information

Ray tracing Tutorial. Lukas Herzberger

Ray tracing Tutorial. Lukas Herzberger Ray tracing Tutorial Lukas Herzberger Agenda Ray tracing algorithm (lab 4a) Intersection tests Ray tracing algorithm (lab 4b) Hints & common mistakes Agenda Ray tracing algorithm (lab 4a) Intersection

More information

Indirect Illumination

Indirect Illumination Indirect Illumination Michael Kazhdan (601.457/657) HB Ch. 14.1, 14.2 FvDFH 16.1, 16.2 Announcements Midterm on October 17 th Office hours: Misha: Monday 2-3 Malone 229 Sing Chun: Friday 9-10 Malone 216

More information

COMP environment mapping Mar. 12, r = 2n(n v) v

COMP environment mapping Mar. 12, r = 2n(n v) v Rendering mirror surfaces The next texture mapping method assumes we have a mirror surface, or at least a reflectance function that contains a mirror component. Examples might be a car window or hood,

More information

Submerge Camera Shader

Submerge Camera Shader Submerge Camera Shader In this tutorial we are going to take a look at a simple scene with a swimming pool and a teapot and we will use the Mental Ray Camera shader called "Submerge" to change the look

More information

CS 428: Fall Introduction to. Raytracing. Andrew Nealen, Rutgers, /18/2009 1

CS 428: Fall Introduction to. Raytracing. Andrew Nealen, Rutgers, /18/2009 1 CS 428: Fall 2009 Introduction to Computer Graphics Raytracing 11/18/2009 1 Forward ray tracing From the light sources Simulate light transport one ray at a time Rays start from lights + bounce around

More information

IBL/GI & GLASS. Getting Realistic Results By Yon Resch. The Three Types of GI lighting and Glass

IBL/GI & GLASS. Getting Realistic Results By Yon Resch. The Three Types of GI lighting and Glass IBL/GI & GLASS Getting Realistic Results By Yon Resch Glass and other transparent materials are some of the hardest materials to render realistically. This has mainly to do with the number of additional

More information

Visual cues to 3D geometry. Light Reflection and Advanced Shading. Shading. Recognizing materials. size (perspective) occlusion shading

Visual cues to 3D geometry. Light Reflection and Advanced Shading. Shading. Recognizing materials. size (perspective) occlusion shading Visual cues to 3D geometry Light Reflection and Advanced Shading size (perspective) occlusion shading CS 4620 Lecture 17 1 2 Shading Recognizing materials Variation in observed color across an object strongly

More information

Rendering. Converting a 3D scene to a 2D image. Camera. Light. Rendering. View Plane

Rendering. Converting a 3D scene to a 2D image. Camera. Light. Rendering. View Plane Rendering Pipeline Rendering Converting a 3D scene to a 2D image Rendering Light Camera 3D Model View Plane Rendering Converting a 3D scene to a 2D image Basic rendering tasks: Modeling: creating the world

More information

Topics and things to know about them:

Topics and things to know about them: Practice Final CMSC 427 Distributed Tuesday, December 11, 2007 Review Session, Monday, December 17, 5:00pm, 4424 AV Williams Final: 10:30 AM Wednesday, December 19, 2007 General Guidelines: The final will

More information

Rendering and Radiosity. Introduction to Design Media Lecture 4 John Lee

Rendering and Radiosity. Introduction to Design Media Lecture 4 John Lee Rendering and Radiosity Introduction to Design Media Lecture 4 John Lee Overview Rendering is the process that creates an image from a model How is it done? How has it been developed? What are the issues

More information

Lecture 17: Recursive Ray Tracing. Where is the way where light dwelleth? Job 38:19

Lecture 17: Recursive Ray Tracing. Where is the way where light dwelleth? Job 38:19 Lecture 17: Recursive Ray Tracing Where is the way where light dwelleth? Job 38:19 1. Raster Graphics Typical graphics terminals today are raster displays. A raster display renders a picture scan line

More information

Input Nodes. Surface Input. Surface Input Nodal Motion Nodal Displacement Instance Generator Light Flocking

Input Nodes. Surface Input. Surface Input Nodal Motion Nodal Displacement Instance Generator Light Flocking Input Nodes Surface Input Nodal Motion Nodal Displacement Instance Generator Light Flocking The different Input nodes, where they can be found, what their outputs are. Surface Input When editing a surface,

More information

Shaders and Textures in Artlantis 2.0 By Gérard Bomer, Abvent

Shaders and Textures in Artlantis 2.0 By Gérard Bomer, Abvent Shaders and Textures in Artlantis 2.0 By Gérard Bomer, Abvent In Artlantis, Shaders and / or Textures are used to define the aspect of materials. In Artlantis there are a few procedural shaders that have

More information

Ray tracing. EECS 487 March 19,

Ray tracing. EECS 487 March 19, Ray tracing EECS 487 March 19, 2007 http://radsite.lbl.gov/radiance/book/ 1 Conventional pipeline (rasterization) For each triangle Compute lighting at vertices For each pixel within triangle Compute interpolated

More information

Questions??? Announcements Assignment 3 due today

Questions??? Announcements Assignment 3 due today Announcements Assignment 3 due today Questions??? Remember that you have late days (if you haven t used them yet ) Problem set 3 out at the end of the day Movie for Assignment 2 at the end of class 1 Ray

More information

General mental ray questions

General mental ray questions HDRI For Artists Siggraph 2008 mental ray HDRI FAQ By Håkan Zap Andersson, mental images version 4.1: April 25, 2008 General mental ray questions What is/are the primary reasons I should use mental ray

More information

Texture Mapping. Images from 3D Creative Magazine

Texture Mapping. Images from 3D Creative Magazine Texture Mapping Images from 3D Creative Magazine Contents Introduction Definitions Light And Colour Surface Attributes Surface Attributes: Colour Surface Attributes: Shininess Surface Attributes: Specularity

More information

Photo Studio Optimizer

Photo Studio Optimizer CATIA V5 Training Foils Photo Studio Optimizer Version 5 Release 19 September 008 EDU_CAT_EN_PSO_FF_V5R19 Photo Studio Optimizer Objectives of the course Upon completion of this course you will be able

More information

Algebra Based Physics

Algebra Based Physics Slide 1 / 66 Slide 2 / 66 Algebra Based Physics Geometric Optics 2015-12-01 www.njctl.org Table of ontents Slide 3 / 66 lick on the topic to go to that section Reflection Spherical Mirror Refraction and

More information

CGS 3034 Lecture 2 Ball Bounce

CGS 3034 Lecture 2 Ball Bounce CGS 3034 Lecture 2 Ball Bounce Introduction to Computer Aided Animation Instructor: Brent Rossen Ball Bounce Example 1 Setup a new project: BallBounce Use Default placement settings Exports to Image folder

More information

Chapter 6- Lighting and Cameras

Chapter 6- Lighting and Cameras Lighting Types and Settings When you create a scene in Blender, you start with a few basic elements that will include a camera, but may or may not include a light. Remember that what the camera sees is

More information

CGDD 4113 Final Review. Chapter 7: Maya Shading and Texturing

CGDD 4113 Final Review. Chapter 7: Maya Shading and Texturing CGDD 4113 Final Review Chapter 7: Maya Shading and Texturing Maya topics covered in this chapter include the following: Shader Types Shader Attributes Texturing the Axe Life, Love, Textures and Surfaces

More information

Advanced Rendering CHAPTER. Render Window. Learning Objectives. Image Pane

Advanced Rendering CHAPTER. Render Window. Learning Objectives. Image Pane CHAPTER Advanced Rendering Learning Objectives After completing this chapter, you will be able to: Make advanced rendering settings. Set the resolution for a rendering. Save a rendering to an image file.

More information

Topic 12: Texture Mapping. Motivation Sources of texture Texture coordinates Bump mapping, mip-mapping & env mapping

Topic 12: Texture Mapping. Motivation Sources of texture Texture coordinates Bump mapping, mip-mapping & env mapping Topic 12: Texture Mapping Motivation Sources of texture Texture coordinates Bump mapping, mip-mapping & env mapping Texture sources: Photographs Texture sources: Procedural Texture sources: Solid textures

More information

Ray Tracing. Local Illumination. Object Space: Global Illumination. Image Space: Backward Ray Tracing. First idea: Forward Ray Tracing

Ray Tracing. Local Illumination. Object Space: Global Illumination. Image Space: Backward Ray Tracing. First idea: Forward Ray Tracing CSCI 420 Computer Graphics Lecture 15 Ra Tracing Ra Casting Shadow Ras Reflection and Transmission [Angel Ch. 11] Local Illumination Object illuminations are independent No light scattering between objects

More information

Computer Graphics. Lecture 13. Global Illumination 1: Ray Tracing and Radiosity. Taku Komura

Computer Graphics. Lecture 13. Global Illumination 1: Ray Tracing and Radiosity. Taku Komura Computer Graphics Lecture 13 Global Illumination 1: Ray Tracing and Radiosity Taku Komura 1 Rendering techniques Can be classified as Local Illumination techniques Global Illumination techniques Local

More information

LEVEL 1 ANIMATION ACADEMY2010

LEVEL 1 ANIMATION ACADEMY2010 1 Textures add more realism to an environment and characters. There are many 2D painting programs that can be used to create textures, such as Adobe Photoshop and Corel Painter. Many artists use photographs

More information

Global Illumination CS334. Daniel G. Aliaga Department of Computer Science Purdue University

Global Illumination CS334. Daniel G. Aliaga Department of Computer Science Purdue University Global Illumination CS334 Daniel G. Aliaga Department of Computer Science Purdue University Recall: Lighting and Shading Light sources Point light Models an omnidirectional light source (e.g., a bulb)

More information

CS 488. More Shading and Illumination. Luc RENAMBOT

CS 488. More Shading and Illumination. Luc RENAMBOT CS 488 More Shading and Illumination Luc RENAMBOT 1 Illumination No Lighting Ambient model Light sources Diffuse reflection Specular reflection Model: ambient + specular + diffuse Shading: flat, gouraud,

More information

INFOGR Computer Graphics. J. Bikker - April-July Lecture 10: Ground Truth. Welcome!

INFOGR Computer Graphics. J. Bikker - April-July Lecture 10: Ground Truth. Welcome! INFOGR Computer Graphics J. Bikker - April-July 2015 - Lecture 10: Ground Truth Welcome! Today s Agenda: Limitations of Whitted-style Ray Tracing Monte Carlo Path Tracing INFOGR Lecture 10 Ground Truth

More information

9. Illumination and Shading

9. Illumination and Shading 9. Illumination and Shading Approaches for visual realism: - Remove hidden surfaces - Shade visible surfaces and reproduce shadows - Reproduce surface properties Texture Degree of transparency Roughness,

More information

Assignment 6: Ray Tracing

Assignment 6: Ray Tracing Assignment 6: Ray Tracing Programming Lab Due: Monday, April 20 (midnight) 1 Introduction Throughout this semester you have written code that manipulated shapes and cameras to prepare a scene for rendering.

More information

Topic 11: Texture Mapping 11/13/2017. Texture sources: Solid textures. Texture sources: Synthesized

Topic 11: Texture Mapping 11/13/2017. Texture sources: Solid textures. Texture sources: Synthesized Topic 11: Texture Mapping Motivation Sources of texture Texture coordinates Bump mapping, mip mapping & env mapping Texture sources: Photographs Texture sources: Procedural Texture sources: Solid textures

More information

CS 4204 Computer Graphics

CS 4204 Computer Graphics CS 4204 Computer Graphics Introduction to Ray Tracing Yong Cao Virginia Tech Reference: Ed Angle, Interactive Computer Graphics, University of New Mexico, class notes Raytracing (Picture from Povray.org)

More information

COMPLETION OF Z-buffer Graphics Pipeline

COMPLETION OF Z-buffer Graphics Pipeline Z-buffer algorithm for each polygon in model project vertices of polygon onto viewing plane for each pixel inside the projected polygon calculate pixel colour calculate pixel z-value compare pixel z-value

More information

Reflection & refraction

Reflection & refraction 2015 EdExcel A Level Physics 2015 EdExcel A Level Physics Topic Topic 5 5 Reflection & refraction Reflection revision Reflection is the bouncing of light rays off a surface Reflection from a mirror: Normal

More information

Ambient Occlusion Pass

Ambient Occlusion Pass Ambient Occlusion Pass (Soft Shadows in the Nooks and Crannies to Replicate Photorealistic Lighting) In this tutorial we are going to go over some advanced lighting techniques for an Ambient Occlusion

More information

CS 354R: Computer Game Technology

CS 354R: Computer Game Technology CS 354R: Computer Game Technology Texture and Environment Maps Fall 2018 Texture Mapping Problem: colors, normals, etc. are only specified at vertices How do we add detail between vertices without incurring

More information

Simple Lighting/Illumination Models

Simple Lighting/Illumination Models Simple Lighting/Illumination Models Scene rendered using direct lighting only Photograph Scene rendered using a physically-based global illumination model with manual tuning of colors (Frederic Drago and

More information

COM337 COMPUTER GRAPHICS Other Topics

COM337 COMPUTER GRAPHICS Other Topics COM337 COMPUTER GRAPHICS Other Topics Animation, Surface Details, Global Illumination Kurtuluş Küllü based on the book by Hearn, Baker, and Carithers There are some other important issues and topics that

More information

Raytracing. COSC 4328/5327 Scott A. King

Raytracing. COSC 4328/5327 Scott A. King Raytracing COSC 4328/5327 Scott A. King Basic Ray Casting Method pixels in screen Shoot ray p from the eye through the pixel. Find closest ray-object intersection. Get color at intersection Basic Ray Casting

More information