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-
- to compile programs in the above-indicated sub- directories/trees,
- one must load libglut. inst-able images of GLUT v3.1 are located at
- toolbox/src/exampleCode/opengl/GLUT/inst/
-
- -------------------------------------
-
- ~opengl2/examples/raster README
-
- Copyright 1993, 1995, 1996, Silicon Graphics, Inc.
- Technical Education Development
- All Rights Reserved.
-
-
- A collection of programs implementing raster
- positioning and pixel operations within the OpenGL.
-
-
-
- blendrgb.c
- Demonstrates how to use the GL_EXT_blend_color extensions
- to blend two images that do not have an alpha channel.
-
- Up Arrow - increase blend factor
- Down Arrow - decrease blend factor
- Escape key - exit the program
-
-
- collage.c: display one or more image files as a collage.
- Display one or more image files as a collage using glRasterPos2f()
- and glDrawPixels()
-
- usage: collage <file.rgb> [<file2.rgb>] ...
-
- Up to MAX_IMAGES can be read. collage will randomly
- display images zoomed randomly in random positions.
-
- Escape key - exit the program
- SPACEBAR - toggle fixed/random zoom
-
-
- copyImage.c
- Demonstrates the glCopyPixels() routine. copyImage copies the
- pixels under the cursor when LEFTMOUSE is pressed.
-
- Escape key - exit the program
- Left Mousebutton, down - copy pixels
- Middle Mousebutton, down - expand viewing area
- Right Mousebutton, down - shrink viewing area
-
-
- copyZoom.c: demonstates the glCopyPixels() and glPixelZoom() routines.
-
- Escape key - exit the program
- Left Mousebutton, down - copy pixels
- Middle Mousebutton, down - zoom down
- Right Mousebutton, down - zoom up
-
-
-
- show.c: displays an sgi rgb format image file in a window.
- show creates a window displaying any RGB image stored in the SGI
- .rgb format. The filename is opened and the image data is read.
- The image is then displayed in a window.
-
- Escape key - exit the program
-
-
- pan.c: creates a window displaying a subimage of any RGB image
- stored in the SGI .rgb format. It opens the file specified on the
- command line and creates a window displaying a subimage taken
- from the middle of the image.
-
- The image can be panned by dragging the mouse with the
- Left Mousebutton pressed.
-
- Left Mousebutton, down - pan subimage
- Escape key - exit the program
-
-
- windowSnap.c: write pixel data from the window to an image file.
- When LEFTMOUSE is pressed and released the window is captured,
- the pixel data is written into a file, and the program exits.
-
- Left Mousebutton, up - get snapshot of window and exit
-