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24 Cards in this Set
- Front
- Back
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saturation
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maximum value of the corresponding primary between 0.0 and 1.0
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RGBA
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four color system, fourth value alpha treated as opacity or transparency
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difference between opaque and transparent
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opaque passes no light through it, transparent object passes light
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glClearColor(1.0, 1.0, 1.0, 1.0)
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sets color to white
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direction of projection
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replaces the center of projection with all projectors becoming parallel
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viewing rectangle (clipped rectangle)
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area of the world that we image
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clipped out
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objects outside the viewing rectangle
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window
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the rectangular area of the display
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window (screen coordinates)
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measurements of size of window
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origin of window coordinates
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(0, 0, 0)
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aspect ratio
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ratio of the rectangle's width to its height
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viewport
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rectangular area of the display window
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Events
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changes detected by the OS and include such actions as keyboard, mouse, or icon
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event queue
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where events are stored as they occur
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callback
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function associated with a specific type of event (e.g. keyboard event, mouse event)
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display callback
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generated when the application program or OS determines that the graphics in the window need to be redrawn
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vertex-array object
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allows you to bundle data associated with a vertex array
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glFlush
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ensures all data is rendered as soon as possible
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buffer object
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placed on the GPU to place data for object
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only information that goes in buffer object is.....
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location of each point
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vertex shader
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passes the vertex's location to the rasterizer
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fragment shader
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outputs a color for a fragment unless fragment is to be discarded
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typical application contains three distinct parts....
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1. application program
2. vertex shader 3. fragment shader |
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program object
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object used to hold shaders and two shader objects, one for each type of shader
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