21. List of Demo Programs

This list shows the demonstration programs available on the Programming with OpenGL: Advanced Rendering web site at:

http://www.sgi.com/software/opengl/courses.html

The programs are grouped by the sections in which they're discussed. Each line gives a short description of the program.

Modeling

• tvertex.c - show problems caused by t-vertices
• quad_decomp.c - shows example of quadrilateral decomposition
• tess.c - shows examples of sphere tessellation
• cap.c - shows how to cap the region exposed by a clipping plane
• csg.c - shows how to render CSG solids with the stencil buffer
• gen_normals.c - shows how to generate correct normals

Geometry and Transformations

• depth.c - compare screen and eye space z
• decal.c - shows how to decal coplanar polygons with the stencil buffer
• hiddenline.c - shows how to render wireframe objects with hidden lines
• stereo.c - shows how to generate stereo image pairs
• tile.c - shows how to tile images
• raster.c - shows how to move the current raster position off-screen
• frustum_z.c - shows an object and its place in view frustum
• inaccuracies.c - provides examples of precision inaccuracy problems
• hidden.c - shows how polygon offset works with depth range
• stereoview.c - shows how to do stereo viewing right
• clipwide.c - shows how to avoid clipping wide lines and points
• distort.c - shows how to correct projection distortion using texture
• locate.c - shows how to pick objects and highlight them

Occlusion Culling

• occull.c - shows how to compute an occlusion map and test against it

Texture Mapping

• mipmap_lines.c - shows different mipmap generation filters
• genmipmap.c - shows how to use the OpenGL pipeline to generate mipmaps
• textile.c - shows how to tile textures
• texpage.c - shows how to page textures
• mippage.c - shows how to page a mipmapped texture
• textrim.c - shows how to trim textures
• textext.c - shows how draw characters with texture maps
• terrain.c - shows how to do elevation color coding and metrics
• contour.c - shows hot to do contouring
• projtex.c - shows how to use projective textures
• cyl_billboard.c - shows how to do cylindrical billboards
• sph_billboard.c - shows how to do spherical billboards
• warp.c - shows how to warp images with textures
• noise.c - shows how to make a filtered noise function
• spectral.c - shows how to make a spectral function from filtered noise
• spotnoise.c - shows how to use spot noise
• tex3dsolid.c - renders a solid image with a 3d texture
• tex3dfunc.c - creates a 2d texture that varies with r value
• makedetail.c - shows how to create a detail texture
• detail.c - shows how to use a detail texture
• aniso.c - shows how to create and use anisotropic textures
• cutaway.c - shows how to create a gradual cutaway

Line Rendering Techniques

• haloed.c - shows how to draw haloed lines using the depth buffer
• silhouette.c - shows how to draw the silhouette edge of an object with the stencil buffer
• solid_to_line.c - shows how to draw solid objects as lines
• overlap.c - shows how to draw wide, smoothed line loops with rounded edges

Blending and Compositing

• comp.c - shows Porter/Duff compositing
• transp.c - shows how to draw transparent objects
• imgproc.c - shows image processing operations
• transparent.c - shows transparency, ordering, culling interactions
• zcomposite.c - shows how to composite depth-buffered images

Antialiasing

• lineaa.c - shows how to draw antialiased lines
• texaa.c - shows how to antialias with texture
• accumaa.c - shows how to antialias a scene with the accumulation buffer
• aalines.c - more on antialiased lines
• aasolid.c - shows how to antialias solids

Lighting Techniques

• envphong.c - shows how to draw phong highlights with environment mapping
• lightmap2d.c - shows how to do 2D texture lightmaps
• lightmap3d.c - shows how to do 3D texture lightmaps
• bumpmap.c - shows how to bumpmap with texture
• fresnel.c - shows an example of how to render Fresnel reflections
• anisolight.c - shows an example of how to render anisotropic reflections

Scene Realism

• genspheremap.c - shows how to generate sphere maps
• mirror.c - shows how to do planar mirror reflections
• projshadow.c - shows how to render projection shadows
• shadowvol.c - shows how to render shadows with shadow volumes
• shadowmap.c - shows how to render shadows with shadow maps
• softshadow.c - shows how to do soft shadows with the accumulation buffer by jittering light sources
• softshadow2.c - shows how to do soft shadows by creating lighting textures with the accumulation buffer

Transparency

• screendoor.c - shows how to do screen-door transparency
• alphablend.c - shows how to do transparency with alpha blending

Image Processing

• convolve.c - shows how to convolve with the accumulation buffer
• cmatrix - shows how to modify colors with a color matrix

Special Effects

• dissolve.c - shows how to do dissolves with the stencil buffer
• motionblur.c - shows how to do motion blur with the accumulation buffer
• field.c - shows how to achieve depth of field effects with the accumulation buffer with the stencil buffer

Illustration and Artistic Techniques

• npr.c - shows how to implement a non-photorealistic lighting model
• hatch.c - shows how to do 3D cross-hatching
• 2d.c - shows how to do 2D rendering
• join.c - shows how to do various styles of line joins
• paint.c - shows how to generate an abstract image from a source image

Scientific Visualization Techniques

• plate.c - shows simple scalar field visualization
• vol2dtex.c - volume visualization with 2D textures
• vol3dtex.c - volume visualization with 3D textures
• lic.c - shows how to compute a line integral convolution
• illumline.c - shows how to use lit stream lines for vector field visualization

Natural Phenomena

• smoke.c - shows how to render smoke
• smoke3d.c - shows how to render 3D smoke using volumetric techniques
• vapor.c - shows how render a vapor trail
• texmovie.c - shows how to create a texture movie
• fire.c - shows how to animate fire
• explode.c - shows how to create an explosion
• dscloud.c - create a cloud image using diamond-square technique
• cloud.c - shows how to render a cloud layer
• cloudlayer.c - shows how to create ground fog
• cloud3d.c - shows how to render a 3D cloud using volumetric techniques
• fire.c - shows how to render fire using movie loops
• water.c - shows an example water rendering technique
• bubble.c - shows an example of how to render a bubble
• underwater.c - shows an example of rendering an underwater scene
• lightpoint.c - shows how to render point light sources
• particle.c - shows how to create particle systems
• snow.c - shows an example of rendering falling snow
• rain.c - shows an example of rendering falling rain

Application Tuning

• complexity.c - shows how to visualize depth complexity for a scene