Sample programs [source, PC binaries]
Be sure to examine each of these to see how the OpenGL calls mentioned in class are employed in practice.
Lighting spec.
light.c - simple light source
light_flat_shading.exe
light_smooth_shading.exe
movelight.c - movable light
movelight.exe
Refer to 'Basic OpenGL Lighting' for more info. on lighting.
Material spec.
teapot.c - shaded teapot
teapot.exe
Variety of materials
NURBS surface spec.
This is an 'advanced' example, feel free to skip it.
Texturing
Here's a sampling of texture-related calls you need to know:- glEnable(GL_TEXTURE_2D): sets up texmapping mode
- glTexEnvf(): texture blending mode (blend, replace..)
- glTexParameteri(): texture mode outside 0..1, etc.
- glTexCoord2f(): texture coords specification
- glTexImage1D(): texture storage (for lookup)
- glTexGen(): texture generation function
- ..
texgen.c - texture generation over surface
texgen.exe
texture.c - simple texture mapping
texture.exe
texmapping.c - texture mapping of a PPM image over a cube
texmapping.exe
texmap.ppm - this is the *binary* PPM image used as the texmap
[example and PPM image orig. by Don Fussell, CS Dept., U. Texas]
Fog (a simple 'environmental' effect)
fog.c - environmental influence
fog.exe
A 'complex' example
dinoshade.c - shadow, reflection!
dinoshade.exe
