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| Glquake v0.99, Quake v1.09 release notes |
| |
| 3dfx owners -- read the 3dfx.txt file. |
| |
| On a standard OpenGL system, all you should need to do to run glquake is put |
| glquake.exe in your quake directory, and run it from there. DO NOT install |
| the opengl32.dll unless you have a 3dfx! Glquake should change the screen |
| resolution to 640*480*32k colors and run full screen by default. |
| |
| If you are running win-95, your desktop must be set to 32k or 64k colors |
| before running glquake. NT can switch automatically. |
| |
| Theoretically, glquake will run on any compliant OpenGL that supports the |
| texture objects extensions, but unless it is very powerfull hardware that |
| accelerates everything needed, the game play will not be acceptable. If it |
| has to go through any software emulation paths, the performance will likely |
| by well under one frame per second. |
| |
| 3dfx has provided an opengl32.dll that implements everything glquake needs, |
| but it is not a full opengl implementation. Other opengl applications are |
| very unlikely to work with it, so consider it basically a "glquake driver". |
| See the encluded 3dfx.txt for specific instalation notes. 3dfx can only run |
| full screen, but you must still have your desktop set to a 16 bit color mode |
| for glquake to start. |
| |
| resolution options |
| ------------------ |
| We had dynamic resolution changing in glquake for a while, but every single |
| opengl driver I tried it on messed up in one way or another, so it is now |
| limited to startup time only. |
| |
| glquake -window |
| This will start glquake in a window on your desktop instead of switching the |
| screen to lower resolution and covering everything. |
| |
| glquake -width 800 -height 600 |
| Tries to run glquake at the specified resolution. Combined with -window, it |
| creates a desktop window that size, otherwise it tries to set a full screen |
| resolution. |
| |
| You can also specify the resolution of the console independant of the screen |
| resolution. |
| |
| glquake -conwidth 320 |
| This will specify a console resolution of 320 by 240 (the height is |
| automatically determined by the default 4:3 aspect ratio, you can also |
| specify the height directly with -conheight). |
| |
| In higher resolution modes such as 800x600 and 1024x768, glquake will default |
| to a 640x480 console, since the font becomes small enough at higher |
| resolutions to become unreadable. If do you wish to have a higher resolution |
| console and status bar, specify it as well, such as: |
| glquake -width 800 -height 600 -conwidth 800 |
| |
| texture options |
| --------------- |
| The amount of textures used in the game can have a large impact on performance. |
| There are several options that let you trade off visual quality for better |
| performance. |
| |
| There is no way to flush already loaded textures, so it is best to change |
| these options on the command line, or they will only take effect on some of |
| the textures when you change levels. |
| |
| OpenGL only allows textures to repeat on power of two boundaries (32, 64, |
| 128, etc), but software quake had a number of textures that repeated at 24 |
| or 96 pixel boundaries. These need to be either stretched out to the next |
| higher size, or shrunk down to the next lower. By default, they are filtered |
| down to the smaller size, but you can cause it to use the larger size if you |
| really want by using: |
| |
| glquake +gl_round_down 0 |
| This will generally run well on a normal 4 MB 3dfx card, but for other cards |
| that have either worse texture management or slower texture swapping speeds, |
| there are some additional settings that can drastically lower the amount of |
| textures to be managed. |
| |
| glquake +gl_picmip 1 |
| This causes all textures to have one half the dimensions they otherwise would. |
| This makes them blurry, but very small. You can set this to 2 to make the |
| textures one quarter the resolution on each axis for REALLY blurry textures. |
| |
| glquake +gl_playermip 1 |
| This is similar to picmip, but is only used for other players in deathmatch. |
| Each player in a deathmatch requires an individual skin texture, so this can |
| be a serious problem for texture management. It wouldn't be unreasonable to |
| set this to 2 or even 3 if you are playing competatively (and don't care if |
| the other guys have smudged skins). If you change this during the game, it |
| will take effect as soon as a player changes their skin colors. |
| |
| GLQuake also supports the following extensions for faster texture operation: |
| |
| GL_SGIS_multitexture |
| Multitextures support allows certain hardware to render the world in one |
| pass instead of two. GLQuake uses two passes, one for the world textures |
| and the second for the lightmaps that are blended on the textures. On some |
| hardware, with a GL_SIGS_multitexture supported OpenGL implementation, this |
| can be done in one pass. On hardware that supports this, you will get a |
| 60% to 100% increase in frame rate. Currently, only 3DFX dual TMU cards |
| (such as the Obsidian 2220) support this extension, but other hardware will |
| soon follow. |
| |
| This extension will be autodetected and used. If for some reason it is not |
| working correctly, specify the command line option "-nomtex" to disable it. |
| |
| GL_EXT_shared_texture_palette |
| GLQuake uses 16bit textures by default but on OpenGL implementations |
| that support the GL_EXT_shared_texture_palette extension, GLQuake will use |
| 8bit textures instead. This results in using half the needed texture memory |
| of 16bit texture and can improve performance. This is very little difference |
| in visual quality due to the fact that the textures are 8bit sources to |
| begin with. |
| |
| run time options |
| ---------------- |
| At the console, you can set these values to effect drawing. |
| |
| gl_texturemode GL_NEAREST |
| Sets texture mapping to point sampled, which may be faster on some GL systems |
| (not on 3dfx). |
| |
| gl_texturemode GL_LINEAR_MIPMAP |
| This is the default texture mode. |
| |
| gl_texturemode GL_LINEAR_MIPMAP_LINEAR |
| This is the highest quality texture mapping (trilinear), but only very high |
| end hardware (intergraph intense 3D / realizm) supports it. Not that big of |
| a deal, actually. |
| |
| gl_finish 0 |
| This causes the game to not issue a glFinish() call each frame, which may make |
| some hardware run faster. If this is cleared, the 3dfx will back up a number |
| of frames and not be very playable. |
| |
| gl_flashblend 0 |
| By default, glquake just draws a shaded ball around objects that are emiting |
| light. Clearing this variable will cause it to properly relight the world |
| like normal quake, but it can be a significant speed hit on some systems. |
| |
| gl_ztrick 0 |
| Glquake uses a buffering method that avoids clearing the Z buffer, but some |
| hardware platforms don't like it. If the status bar and console are flashing |
| every other frame, clear this variable. |
| |
| gl_keeptjunctions 0 |
| If you clear this, glquake will remove colinear vertexes when it reloads the |
| level. This can give a few percent speedup, but it can leave a couple stray |
| blinking pixels on the screen. |
| |
| novelty features |
| ---------------- |
| These are some rendering tricks that were easy to do in glquake. They aren't |
| very robust, but they are pretty cool to look at. |
| |
| r_shadows 1 |
| This causes every object to cast a shadow. |
| |
| r_wateralpha 0.7 |
| This sets the opacity of water textures, so you can see through it in properly |
| processed maps. 0.3 is very faint, almost like fog. 1 is completely solid |
| (the default). Unfortunately, the standard quake maps don't contain any |
| visibility information for seeing past water surfaces, so you can't just play |
| quake with this turned on. If you just want to see what it looks like, you |
| can set "r_novis 1", but that will make things go very slow. When I get a |
| chance, I will probably release some maps that have been processed properly |
| for this. |
| |
| r_mirroralpha 0.3 |
| This changes one particular texture (the stained glass texture in the EASY |
| start hall) into a mirror. The value is the opacity of the mirror surface. |
| |