| INTRODUCTION |
| ------------ |
| |
| This directory is usually included in the Mesa demos distribution or |
| in the GLUT distribution. |
| |
| I have written the demos included in this directory mainly for showing |
| the capabilities of the Mesa library when using the Voodoo driver. |
| However all the demos are written using the GLUT and OpenGL so they |
| work with any GLUT/OpenGL platform (tested: Linux+Mesa+Voodoo driver, |
| Linux+Mesa+X11 driver, Win95+Mesa+Voodoo driver and SGI Onyx IR thanks |
| to Mark Kilgard). |
| |
| All the demos make an heavy use of texture mapping, blending, etc. so |
| you _need_ some kind of hardware support for the OpenGL otherwise they |
| will run at ~1fps. You need also a OpenGL 1.1 compliant library. |
| |
| You can find some screenshot of these demos at |
| http://www-hmw.caribel.pisa.it/fxmesa/fxdemos.hmtl |
| |
| Write me if you find some bug in the demos. |
| |
| David Bucciarelli (tech.hmw@plus.it) |
| |
| Humanware s.r.l. |
| Via XXIV Maggio 62 |
| Pisa, Italy |
| Tel./Fax +39-50-554108 |
| email: info.hmw@plus.it |
| www: www-hmw.caribel.pisa.it |
| |
| |
| A BRIEF DESCRIPTION OF THE DEMOS |
| -------------------------------- |
| |
| |
| IPERS |
| ----- |
| |
| Sources: ipers.c image.c |
| |
| A nice spinning fractal object. |
| |
| |
| RAY |
| --- |
| |
| Sources: ray.c |
| |
| I'm using ray tracing to dynamically generate texture maps with |
| specular, diffuse, shadows, and mirror colors. Each frame the texture |
| maps of the plane and of the sphere are partially updated. With this |
| technique you can obtain true mirrors, shadows, specular highlights, |
| bump mapping, etc. in realtime. This demo is really CPU intensive |
| (~25fps on a PentiumII@300MHz with a Pure3D). Support on-the-fly |
| switching between fullscreen and in-window rendering under Linux/Mesa |
| (start your X server in 16 bpp mode and press the spacebar). |
| |
| |
| TUNNEL |
| ------ |
| |
| Sources: tunnel.c image.c sources.c |
| Data: bw.rgb tile.rgb |
| |
| The model was designed and prelighted with Alias|Wavefront |
| PowerAnimator V8. Triangle strips were built with a tool written by me |
| and then statically included in the sources. This demo doesn't |
| require the ZBuffer and use antialiased polygons. Support on-the-fly |
| switching between fullscreen and in-window rendering under Linux/Mesa |
| (start your X server in 16 bpp mode and press the spacebar). |
| |
| |
| TUNNEL2 |
| ------ |
| |
| Sources: tunnel2.c image.c sources.c |
| Data: bw.rgb tile.rgb |
| |
| The some tunnel demo but with two output channels. A nice |
| example of the Mesa/Voodoo support for multiple boards in |
| the some PC. |
| |
| |
| TEAPOT |
| ------ |
| |
| Sources: teapot.c image.c dteapot.c shadow.c |
| Data: bw.rgb tile.rgb |
| |
| The shadow is drawn projecting the teapot geometry over the plane. All |
| other light effects are drawn using the standard OpenGL capabilities. |
| Support on-the-fly switching between fullscreen and in-window |
| rendering under Linux/Mesa (start your X server in 16 bpp mode and |
| press the spacebar). |
| |
| |
| FIRE |
| ---- |
| |
| Sources: fire.c image.c |
| Data: s128.rgb tree2.rgb |
| |
| The demo use a small particle system to draw some nice visual effect. |
| You can interactively change many parameters of the particle system |
| and you can choose the number of particles at the startup ('fire |
| 4000'). This demo should be called fountain. Support on-the-fly |
| switching between fullscreen and in-window rendering under Linux/Mesa |
| (start your X server in 16 bpp mode and press the spacebar). |
| |
| |
| TERRAIN |
| ------- |
| |
| Sources: mesaland.c |
| |
| This demo is base on another demo written by Mikael SkiZoWalker. I |
| have added the capabilities to freely fly around, view culling and |
| some nice color. Support on-the-fly switching between fullscreen and |
| in-window rendering under Linux/Mesa (start your X server in 16 bpp |
| mode and press the spacebar). |
| |
| |
| GLTEST |
| ------ |
| |
| Sources: gltest.c |
| |
| This is a simple benchmark suite that I'm using in the development of |
| the Mesa/Voodoo driver. Type 'gltest >my.res' and you will get some |
| data about the performances of your OpenGL. Follow the results with my |
| PC (Linux+Mesa-2.6+PentiumII@300MHz+Pure3D): |
| |
| Simple Points |
| 587900.080674 Pnts/sec |
| |
| Smooth Lines |
| SIZE=480 => 39007.426183 Lins/sec |
| SIZE=250 => 74575.016485 Lins/sec |
| SIZE=100 => 179734.882409 Lins/sec |
| SIZE=050 => 183987.795297 Lins/sec |
| SIZE=025 => 183820.086309 Lins/sec |
| |
| |
| ZSmooth Triangles |
| SIZE=480 => 784.954997 Tris/sec |
| SIZE=250 => 2862.325889 Tris/sec |
| SIZE=100 => 17779.492938 Tris/sec |
| SIZE=050 => 159339.829844 Tris/sec |
| SIZE=025 => 428602.984008 Tris/sec |
| |
| |
| ZSmooth Tex Blend Triangles |
| SIZE=480 => 784.473931 Tris/sec |
| SIZE=250 => 2853.781513 Tris/sec |
| SIZE=100 => 17598.252146 Tris/sec |
| SIZE=050 => 152632.578337 Tris/sec |
| SIZE=025 => 377584.760048 Tris/sec |
| |
| |
| ZSmooth Tex Blend TMesh Triangles |
| SIZE=400 => 563.900695 Tris/sec, MPixel Fill/sec: 45.112056 |
| SIZE=250 => 1449.777225 Tris/sec, MPixel Fill/sec: 45.305538 |
| SIZE=100 => 8702.869121 Tris/sec, MPixel Fill/sec: 43.514346 |
| SIZE=050 => 31896.867466 Tris/sec, MPixel Fill/sec: 39.871084 |
| SIZE=025 => 114037.262894 Tris/sec, MPixel Fill/sec: 35.636645 |
| SIZE=010 => 220494.235839 Tris/sec, MPixel Fill/sec: 11.024712 |
| SIZE=005 => 225615.506651 Tris/sec, MPixel Fill/sec: 2.820194 |
| SIZE=002 => 225607.681439 Tris/sec, MPixel Fill/sec: 0.451215 |
| |
| |
| Color/Depth Buffer Clears |
| 295.042474 Clrs/sec, MPixel Fill/sec: 90.553256 |
| |
| |
| Follow the results with my |
| PC (Linux+Mesa-3.0beta5+PentiumII@300MHz+Voodoo2): |
| |
| |
| Simple Points |
| 1620113.525130 Pnts/sec |
| |
| Smooth Lines |
| SIZE=480 => 73841.166065 Lins/sec |
| SIZE=250 => 140794.035316 Lins/sec |
| SIZE=100 => 344185.242157 Lins/sec |
| SIZE=050 => 420399.008289 Lins/sec |
| SIZE=025 => 420261.389773 Lins/sec |
| |
| |
| ZSmooth Triangles |
| SIZE=480 => 1434.668506 Tris/sec |
| SIZE=250 => 5228.449614 Tris/sec |
| SIZE=100 => 46603.815842 Tris/sec |
| SIZE=050 => 325757.045961 Tris/sec |
| SIZE=025 => 589022.403336 Tris/sec |
| |
| |
| ZSmooth Tex Blend Triangles |
| SIZE=480 => 1414.900041 Tris/sec |
| SIZE=250 => 5006.055235 Tris/sec |
| SIZE=100 => 43602.252031 Tris/sec |
| SIZE=050 => 303497.092692 Tris/sec |
| SIZE=025 => 517087.428669 Tris/sec |
| |
| |
| ZSmooth Tex Blend TMesh Triangles |
| SIZE=400 => 1023.273112 Tris/sec, MPixel Fill/sec: 81.861849 |
| SIZE=250 => 2595.692121 Tris/sec, MPixel Fill/sec: 81.115379 |
| SIZE=100 => 15788.198912 Tris/sec, MPixel Fill/sec: 78.940995 |
| SIZE=050 => 58784.121300 Tris/sec, MPixel Fill/sec: 73.480152 |
| SIZE=025 => 244233.873481 Tris/sec, MPixel Fill/sec: 76.323085 |
| SIZE=010 => 474995.004191 Tris/sec, MPixel Fill/sec: 23.749750 |
| SIZE=005 => 475124.354163 Tris/sec, MPixel Fill/sec: 5.939054 |
| SIZE=002 => 474959.089503 Tris/sec, MPixel Fill/sec: 0.949918 |
| |
| |
| Color/Depth Buffer Clears |
| 478.654830 Clrs/sec, MPixel Fill/sec: 146.906826 |
| |
| |
| PALTEX and GLBPALTX |
| ------------------- |
| |
| Sources: paltex.c and glbpaltx.c |
| |
| The PALTEX example was written by Brian Paul and it shows the |
| capabilities of the GL_EXT_paletted_texture extension. I have written |
| the other example in order to show the capabilities of the |
| gl3DfxSetPaletteEXT() (it used only by GLQuake and Quake2). |