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Initial pass at moving the opengl readme from plaintext to markdown.
Probably screwed up a lot of stuff.
This commit is contained in:
Zachary J. Slater 2015-06-04 22:54:46 -07:00
parent 5082548bf5
commit a0d2e851cd
1 changed files with 64 additions and 61 deletions
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125
opengl2-readme.txt → opengl2-readme.md
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@ -52,7 +52,9 @@ For Win32:
1. Start ioquake3. (ioquake3.x86.exe on Win32)
2. Open the console (default key ~) and type '/cl_renderer opengl2; vid_restart'
2. Open the console (the default key is tilde ~) and type
`/cl_renderer opengl2` and press enter
`/vid_restart` then press enter again.
3. Enjoy.
@ -62,94 +64,94 @@ For Win32:
-------------------------------------------------------------------------------
Cvars for simple rendering features:
r_ext_compressed_textures - Automatically compress textures.
* `r_ext_compressed_textures` - Automatically compress textures.
0 - No texture compression. (default)
1 - DXT/LATC texture compression if
supported.
2 - BPTC texture compression if supported.
r_ext_framebuffer_multisample - Multisample Anti-aliasing.
* `r_ext_framebuffer_multisample` - Multisample Anti-aliasing.
0 - None. (default)
1-16 - Some.
17+ - Too much!
r_ssao - Enable screen-space ambient occlusion.
* `r_ssao` - Enable screen-space ambient occlusion.
Currently eats framerate and has some
visible artifacts.
0 - No. (default)
1 - Yes.
Cvars for HDR and tonemapping:
r_hdr - Do scene rendering in a framebuffer with
* `r_hdr` - Do scene rendering in a framebuffer with
high dynamic range. (Less banding, and
exposure changes look much better)
0 - No.
1 - Yes. (default)
r_cameraExposure - Cheat. Alter brightness, in powers of two.
* `r_cameraExposure` - Cheat. Alter brightness, in powers of two.
-2 - 4x as dark.
0 - Normal. (default)
0.5 - Sqrt(2)x as bright.
2 - 4x as bright.
r_postProcess - Enable post-processing.
* `r_postProcess` - Enable post-processing.
0 - No.
1 - Yes. (default)
r_toneMap - Enable tone mapping. Requires
* `r_toneMap` - Enable tone mapping. Requires
r_hdr and r_postProcess.
0 - No.
1 - Yes. (default)
r_forceToneMap - Cheat. Override built-in and map tonemap
settings and use cvars r_forceToneMapAvg,
r_forceToneMapMin, and r_forceToneMapMax.
* `r_forceToneMap` - Cheat. Override built-in and map tonemap settings and use cvars r_forceToneMapAvg, r_forceToneMapMin, and r_forceToneMapMax.
0 - No. (default)
1 - Yes.
r_forceToneMapAvg - Cheat. Map average scene luminance to this
* `r_forceToneMapAvg` - Cheat. Map average scene luminance to this
value, in powers of two. Requires
r_forceToneMap.
-2.0 - Dark.
-1.0 - Kinda dark. (default).
2.0 - Too bright.
r_forceToneMapMin - Cheat. After mapping average, luminance
* `r_forceToneMapMin` - Cheat. After mapping average, luminance
below this level is mapped to black.
Requires r_forceToneMap.
-5 - Not noticeable.
-3.25 - Normal. (default)
0.0 - Too dark.
r_forceToneMapMin - Cheat. After mapping average, luminance
* `r_forceToneMapMin` - Cheat. After mapping average, luminance
above this level is mapped to white.
Requires r_forceToneMap.
0.0 - Too bright.
1.0 - Normal. (default).
2.0 - Washed out.
r_autoExposure - Do automatic exposure based on scene
* `r_autoExposure` - Do automatic exposure based on scene
brightness. Hardcoded to -2 to 2 on maps
that don't specify otherwise. Requires
r_hdr, r_postprocess, and r_toneMap.
0 - No.
1 - Yes. (default)
r_forceAutoExposure - Cheat. Override built-in and map auto
* `r_forceAutoExposure` - Cheat. Override built-in and map auto
exposure settings and use cvars
r_forceAutoExposureMin and
r_forceAutoExposureMax.
0 - No. (default)
1 - Yes.
r_forceAutoExposureMin - Cheat. Set minimum exposure to this value,
* `r_forceAutoExposureMin` - Cheat. Set minimum exposure to this value,
in powers of two. Requires
r_forceAutoExpsure.
-3.0 - Dimmer.
-2.0 - Normal. (default)
-1.0 - Brighter.
r_forceAutoExposureMax - Cheat. Set maximum exposure to this value,
* `r_forceAutoExposureMax` - Cheat. Set maximum exposure to this value,
in powers of two. Requires
r_forceAutoExpsure.
1.0 - Dimmer.
@ -157,7 +159,8 @@ Cvars for HDR and tonemapping:
3.0 - Brighter.
Cvars for advanced material usage:
r_normalMapping - Enable normal mapping for materials that
* `r_normalMapping` - Enable normal mapping for materials that
support it, and also specify advanced
shading techniques.
0 - No.
@ -167,7 +170,7 @@ Cvars for advanced material usage:
3 - Yes, and use tri-Ace's Oren-Nayar
reflectance model.
r_specularMapping - Enable specular mapping for materials that
* `r_specularMapping` - Enable specular mapping for materials that
support it, and also specify advanced
specular techniques.
0 - No.
@ -176,7 +179,7 @@ Cvars for advanced material usage:
3 - Yes, and use Cook-Torrance.
4 - Yes, and use Torrance-Sparrow.
r_deluxeMapping - Enable deluxe mapping. (Map is compiled
* `r_deluxeMapping` - Enable deluxe mapping. (Map is compiled
with light directions.) Even if the map
doesn't have deluxe mapping compiled in,
an approximation based on the lightgrid
@ -184,27 +187,27 @@ Cvars for advanced material usage:
0 - No.
1 - Yes. (default)
r_parallaxMapping - Enable parallax mapping for materials that
* `r_parallaxMapping` - Enable parallax mapping for materials that
support it.
0 - No. (default)
1 - Use parallax occlusion mapping.
2 - Use relief mapping. (slower)
r_baseSpecular - Set the specular reflectance of materials
* `r_baseSpecular` - Set the specular reflectance of materials
which don't include a specular map or
use the specularReflectance keyword.
0 - No.
0.04 - Realistic. (default)
1.0 - Ack.
r_baseGloss - Set the glossiness of materials which don't
* `r_baseGloss` - Set the glossiness of materials which don't
include a specular map or use the
specularExponent keyword.
0 - Rough.
0.3 - Default.
1.0 - Shiny.
r_baseNormalX - Set the scale of the X values from normal
* `r_baseNormalX` - Set the scale of the X values from normal
maps when the normalScale keyword is not
used.
-1 - Flip X.
@ -212,7 +215,7 @@ Cvars for advanced material usage:
1 - Normal X. (default)
2 - Double X.
r_baseNormalY - Set the scale of the Y values from normal
* `r_baseNormalY` - Set the scale of the Y values from normal
maps when the normalScale keyword is not
used.
-1 - Flip Y.
@ -220,7 +223,7 @@ Cvars for advanced material usage:
1 - Normal Y. (default)
2 - Double Y.
r_baseParallax - Sets the scale of the parallax effect for
* `r_baseParallax` - Sets the scale of the parallax effect for
materials when the parallaxDepth keyword
is not used.
0 - No depth.
@ -229,7 +232,8 @@ Cvars for advanced material usage:
0.1 - Looks broken.
Cvars for image interpolation and generation:
r_imageUpsample - Use interpolation to artifically increase
* `r_imageUpsample` - Use interpolation to artifically increase
the resolution of all textures. Looks good
in certain circumstances.
0 - No. (default)
@ -237,50 +241,48 @@ Cvars for image interpolation and generation:
2 - 4x size.
3 - 8x size, etc
r_imageUpsampleMaxSize - Maximum texture size when upsampling
* `r_imageUpsampleMaxSize` - Maximum texture size when upsampling
textures.
1024 - Default.
2048 - Really nice.
4096 - Really slow.
8192 - Crash.
r_imageUpsampleType - Type of interpolation when upsampling
* `r_imageUpsampleType` - Type of interpolation when upsampling
textures.
0 - None. (probably broken)
1 - Bad but fast (default,
FCBI without second derivatives)
2 - Okay but slow (normal FCBI)
r_genNormalMaps - Naively generate normal maps for all
* `r_genNormalMaps* - Naively generate normal maps for all
textures.
0 - Don't. (default)
1 - Do.
Cvars for the sunlight and cascaded shadow maps:
r_forceSun - Cheat. Force sunlight and shadows, using sun
position from sky material.
* `r_forceSun` - Cheat. Force sunlight and shadows, using sun position from sky material.
0 - Don't. (default)
1 - Do.
2 - Sunrise, sunset.
r_forceSunMapLightScale - Cheat. Scale map brightness by this factor
* `r_forceSunMapLightScale` - Cheat. Scale map brightness by this factor
when r_forceSun 1.
1.0 - Default
r_forceSunLightScale - Cheat. Scale sun brightness by this factor
* `r_forceSunLightScale` - Cheat. Scale sun brightness by this factor
when r_forceSun 1.
1.0 - Default
r_forceSunAmbientScale - Cheat. Scale sun ambient brightness by this
factor when r_forceSun 1.
0.5 - Default
r_sunShadows - Enable sunlight and cascaded shadow maps for
* `r_forceSunAmbientScale` - Cheat. Scale sun ambient brightness by this factor when r_forceSun 1. 0.5 - Default
* `r_sunShadows` - Enable sunlight and cascaded shadow maps for
it on maps that support it.
0 - No.
1 - Yes. (default)
r_sunlightMode - Specify the method used to add sunlight to
* `r_sunlightMode` - Specify the method used to add sunlight to
the scene.
0 - No.
1 - Multiply lit areas by light scale, and
@ -290,13 +292,13 @@ Cvars for the sunlight and cascaded shadow maps:
and doesn't integrate well with existing
maps.
r_shadowFilter - Enable filtering shadows for a smoother
* `r_shadowFilter` - Enable filtering shadows for a smoother
look.
0 - No.
1 - Some. (default)
2 - Much.
r_shadowMapSize - Size of each cascaded shadow map.
* `r_shadowMapSize` - Size of each cascaded shadow map.
256 - 256x256, ugly, probably shouldn't
go below this.
512 - 512x512, passable.
@ -306,77 +308,78 @@ Cvars for the sunlight and cascaded shadow maps:
2048.
Cvars that you probably don't care about or shouldn't mess with:
r_mergeMultidraws - Optimize number of calls to
* `r_mergeMultidraws` - Optimize number of calls to
glMultiDrawElements().
0 - Don't.
1 - Do some. (default)
2 - Do more than necessary (eats CPU).
r_mergeLeafSurfaces - Merge surfaces that share common materials
* `r_mergeLeafSurfaces` - Merge surfaces that share common materials
and a common leaf. Speeds up rendering.
0 - Don't.
1 - Do. (default)
r_recalcMD3Normals - Recalculate the normals when loading an MD3.
* `r_recalcMD3Normals` - Recalculate the normals when loading an MD3.
Fixes normal maps in some cases but looks
ugly in others.
0 - Don't. (default)
1 - Do.
r_depthPrepass - Do a depth-only pass before rendering.
* `r_depthPrepass` - Do a depth-only pass before rendering.
Speeds up rendering in cases where advanced
features are used. Required for
r_sunShadows.
0 - No.
1 - Yes. (default)
r_normalAmbient - Split map light into ambient and directed
* `r_normalAmbient` - Split map light into ambient and directed
portions when doing deluxe mapping. Not
very useful.
0 - Don't. (default).
0.3 - 30% ambient, 70% directed.
1.0 - 100% ambient.
r_mergeLightmaps - Merge the small (128x128) lightmaps into
* `r_mergeLightmaps` - Merge the small (128x128) lightmaps into
2 or fewer giant (4096x4096) lightmaps.
Easy speedup.
0 - Don't.
1 - Do. (default)
r_shadowCascadeZNear - Near plane for shadow cascade frustums.
* `r_shadowCascadeZNear` - Near plane for shadow cascade frustums.
4 - Default.
r_shadowCascadeZFar - Far plane for shadow cascade frustums.
* `r_shadowCascadeZFar` - Far plane for shadow cascade frustums.
3072 - Default.
r_shadowCascadeZBias - Z-bias for shadow cascade frustums.
* `r_shadowCascadeZBias` - Z-bias for shadow cascade frustums.
-256 - Default.
r_materialGamma - Gamma level for material textures.
* `r_materialGamma` - Gamma level for material textures.
(diffuse, specular)
1.0 - Quake 3, fastest. (default)
r_lightGamma - Gamma level for light.
* `r_lightGamma` - Gamma level for light.
(lightmap, lightgrid, vertex lights)
1.0 - Quake 3, fastest. (default)
r_framebufferGamma - Gamma level for framebuffers.
* `r_framebufferGamma` - Gamma level for framebuffers.
1.0 - Quake 3, fastest. (default)
r_tonemapGamma - Gamma applied after tonemapping.
* `r_tonemapGamma` - Gamma applied after tonemapping.
1.0 - Quake 3, fastest. (default)
Cvars that have broken bits:
r_dlightMode - Change how dynamic lights look.
* `r_dlightMode` - Change how dynamic lights look.
0 - Quake 3 style dlights, fake
brightening. (default)
1 - Actual lighting, no shadows.
2 - Light and shadows. (broken)
r_pshadowDist - Virtual camera distance when creating shadow
maps for projected shadows. Deprecated.
cg_shadows - Old shadow code. Deprecated.
* `r_pshadowDist` - Virtual camera distance when creating shadowmaps for projected shadows. Deprecated.
* `cg_shadows` - Old shadow code. Deprecated.
-------------------------------------------------------------------------------