Real-Time Rendering (2nd Edition)

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1 ECE 595 / CS 491 / CS 591 Real-Time Rendering & Graphics Hardware Pradeep Sen Advanced Graphics Lab Class 11 February 26, 2007 Real-time Rendering & Graphics Hardware Pradeep Sen Class 11 – February 26, 2007 Announcements New homework available today (due next Monday) Midterm exam next Wednesday (March 7 in class). Will cover up to and including next Monday’s lecture on hard shadows. Office hours tomorrow start at 3:15 Real-time Rendering & Graphics Hardware Pradeep Sen Class 11 – February 26, 2007 Last time Joe talked to you about Cg, high-level shading for NPR Real-time Rendering & Graphics Hardware Pradeep Sen Class 11 – February 26, 2007 Today Introduction to the texture mapping pipeline Sampling artifacts Silhouette maps Real-time Rendering & Graphics Hardware Pradeep Sen Class 11 – February 26, 2007 Introduction to texture mapping – Developed by Catmull (’74) as way to improve realism without increasing geometric complexity – Define parameterization (u,v) over surface – Function f(u,v) can now modify appearance of surface – Function f(u,v) can be stored as an array of pixels called a texture geometry u,v parameterization f(u,v) (u 0 ,v 0 ) v u v u (u 0 ,v 0 ) Real-time Rendering & Graphics Hardware Pradeep Sen Class 11 – February 26, 2007 Introduction to texture mapping geometry texture texture-mapped u v Real-time Rendering & Graphics Hardware Pradeep Sen Class 11 – February 26, 2007 A little sampling theory Real-time Rendering & Graphics Hardware Pradeep Sen Class 11 – February 26, 2007 Ideal texture mapping pipeline in 1D 1D u 2D v s t u v screen space texture space Real-time Rendering & Graphics Hardware Pradeep Sen Class 11 – February 26, 2007
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