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Uniform Variables

As described in the technical documentation, all possible parameters (what OpenGL calls "uniform variables") that may be passed to a shader are enumerated in the shaderProgram_t structure in src/engine/rendererGL/tr_local.h:1359.

Type	Name	Used by	Set with
`int32_t`	`u_ColorMap`
`int32_t`	`u_CurrentMap`
`int32_t`	`u_ContrastMap`
`int32_t`	`u_DiffuseMap`
`int32_t`	`u_NormalMap`
`int32_t`	`u_SpecularMap`
`int32_t`	`u_LightMap`
`int32_t`	`u_DeluxeMap`
`int32_t`	`u_DepthMap`
`int32_t`	`u_DepthMapBack`
`int32_t`	`u_DepthMapFront`
`int32_t`	`u_PortalMap`
`int32_t`	`u_AttenuationMapXY`
`int32_t`	`u_AttenuationMapZ`
`int32_t`	`u_ShadowMap`
`int32_t`	`u_ShadowMap0`
`int32_t`	`u_ShadowMap1`
`int32_t`	`u_ShadowMap2`
`int32_t`	`u_ShadowMap3`
`int32_t`	`u_ShadowMap4`
`int32_t`	`u_EnvironmentMap0`
`int32_t`	`u_EnvironmentMap1`
`int32_t`	`u_RandomMap`
`int32_t`	`u_GrainMap`
`int32_t`	`u_VignetteMap`
`int32_t`	`u_ColorTextureMatrix`
`matrix_t`	`t_ColorTextureMatrix`
`int32_t`	`u_DiffuseTextureMatrix`
`matrix_t`	`t_DiffuseTextureMatrix`
`int32_t`	`u_NormalTextureMatrix`
`matrix_t`	`t_NormalTextureMatrix`
`int32_t`	`u_SpecularTextureMatrix`
`matrix_t`	`t_SpecularTextureMatrix`
`int32_t`	`u_AlphaTest`
`alphaTest_t`	`t_AlphaTest`
`int32_t`	`u_ViewOrigin`
`vec3_t`	`t_ViewOrigin`
`GLint`	`u_DeformParms`
`int32_t`	`u_Color`
`vec4_t`	`t_Color`
`int32_t`	`u_ColorModulate`
`vec4_t`	`t_ColorModulate`
`int32_t`	`u_AmbientColor`
`vec3_t`	`t_AmbientColor`
`int32_t`	`u_LightDir`
`vec3_t`	`t_LightDir`
`int32_t`	`u_LightOrigin`
`vec3_t`	`t_LightOrigin`
`int32_t`	`u_LightColor`
`vec3_t`	`t_LightColor`
`int32_t`	`u_LightRadius`
`float`	`t_LightRadius`
`int32_t`	`u_LightParallel`
`qboolean`	`t_LightParallel`
`int32_t`	`u_LightScale`
`float`	`t_LightScale`
`int32_t`	`u_LightWrapAround`
`float`	`t_LightWrapAround`
`int32_t`	`u_LightAttenuationMatrix`
`matrix_t`	`t_LightAttenuationMatrix`
`int32_t`	`u_LightFrustum`
`int32_t`	`u_ShadowMatrix`
`matrix_t`	`t_ShadowMatrix`
`int32_t`	`u_ShadowCompare`
`qboolean`	`t_ShadowCompare`
`int32_t`	`u_ShadowTexelSize`
`float`	`t_ShadowTexelSize`
`int32_t`	`u_ShadowBlur`
`float`	`t_ShadowBlur`
`GLint`	`u_ShadowParallelSplitDistances`
`vec4_t`	`t_ShadowParallelSplitDistances`
`int32_t`	`u_RefractionIndex`
`float`	`t_RefractionIndex`
`int32_t`	`u_FresnelPower`
`int32_t`	`u_FresnelScale`
`int32_t`	`u_FresnelBias`
`GLint`	`u_NormalScale`
`int32_t`	`u_EtaRatio`
`int32_t`	`u_FogDensity`
`int32_t`	`u_FogColor`
`GLint`	`u_FogDistanceVector`
`vec4_t`	`t_FogDistanceVector`
`GLint`	`u_FogDepthVector`
`vec4_t`	`t_FogDepthVector`
`GLint`	`u_FogEyeT`
`float`	`t_FogEyeT`
`int32_t`	`u_SSAOJitter`
`int32_t`	`u_SSAORadius`
`GLint`	`u_ParallaxMapping`
`qboolean`	`t_ParallaxMapping`
`int32_t`	`u_DepthScale`
`float`	`t_DepthScale`
`GLint`	`u_PortalClipping`
`qboolean`	`t_PortalClipping`
`GLint`	`u_PortalPlane`
`vec4_t`	`t_PortalPlane`
`int32_t`	`u_PortalRange`
`float`	`t_PortalRange`
`GLint`	`u_EnvironmentInterpolation`
`float`	`t_EnvironmentInterpolation`
`GLint`	`u_HDRKey`
`float`	`t_HDRKey`
`GLint`	`u_HDRAverageLuminance`
`float`	`t_HDRAverageLuminance`
`GLint`	`u_HDRMaxLuminance`
`float`	`t_HDRMaxLuminance`
`int32_t`	`u_DeformMagnitude`
`float`	`t_DeformMagnitude`
`int32_t`	`u_ModelMatrix`
`matrix_t`	`t_ModelMatrix`
`int32_t`	`u_ViewMatrix`
`matrix_t`	`t_ViewMatrix`
`int32_t`	`u_ModelViewMatrix`
`matrix_t`	`t_ModelViewMatrix`
`int32_t`	`u_ModelViewMatrixTranspose`
`matrix_t`	`t_ModelViewMatrixTranspose`
`int32_t`	`u_ProjectionMatrix`
`matrix_t`	`t_ProjectionMatrix`
`int32_t`	`u_ProjectionMatrixTranspose`
`matrix_t`	`t_ProjectionMatrixTranspose`
`int32_t`	`u_ModelViewProjectionMatrix`
`matrix_t`	`t_ModelViewProjectionMatrix`
`int32_t`	`u_UnprojectMatrix`
`matrix_t`	`t_UnprojectMatrix`
`int32_t`	`u_VertexSkinning`
`qboolean`	`t_VertexSkinning`
`GLint`	`u_VertexInterpolation`
`float`	`t_VertexInterpolation`
`int32_t`	`u_BoneMatrix`	vertexSkinning_vp.glsl: `VertexSkinning_P_N` `VertexSkinning_P_TBN`	`u_BoneMatrix::SetUniform_BoneMatrix()`
`int32_t`	`u_Time`
`float`	`t_Time`

Shaders

blurX_fp.glsl

blurX_vp.glsl

blurY_fp.glsl

blurY_vp.glsl

cameraEffects_fp.glsl

cameraEffects_vp.glsl

computeLight_fp.glsl

Provide reusable functions for computing light effects (like specularity).

contrast_fp.glsl

contrast_vp.glsl

debugShadowMap_fp.glsl

debugShadowMap_vp.glsl

deformVertexes_vp.glsl

depthtile1_fp.glsl

Part of the tiled renderer.

depthtile1_vp.glsl

Part of the tiled renderer.

depthtile2_fp.glsl

Part of the tiled renderer.

depthtile2_vp.glsl

Part of the tiled renderer.

dispersion_C_fp.glsl

dispersion_C_vp.glsl

fogGlobal_fp.glsl

fogGlobal_vp.glsl

fogQuake3_fp.glsl

fogQuake3_vp.glsl

forwardLighting_fp.glsl

forwardLighting_vp.glsl

fxaa3_11_fp.glsl

Provides FxaaPixelShader function we use in fxaa_fp.glsl

fxaa_fp.glsl

FXAA code.

fxaa_vp.glsl

FXAA code.

generic_fp.glsl

generic_vp.glsl

heatHaze_fp.glsl

heatHaze_vp.glsl

lightMapping_fp.glsl

lightMapping_vp.glsl

lighttile_fp.glsl

Part of the tiled renderer.

lighttile_vp.glsl

Part of the tiled renderer.

liquid_fp.glsl

liquid_vp.glsl

motionblur_fp.glsl

motionblur_vp.glsl

portal_fp.glsl

portal_vp.glsl

reflection_CB_fp.glsl

reflection_CB_vp.glsl

refraction_C_fp.glsl

refraction_C_vp.glsl

reliefMapping_fp.glsl

Provide reusable functions to process normal and height maps.

screen_fp.glsl

screen_vp.glsl

shadowFill_fp.glsl

shadowFill_vp.glsl

skybox_fp.glsl

skybox_vp.glsl

ssao_fp.glsl

ssao_vp.glsl

vertexAnimation_vp.glsl

Contains vertex shaders to perform skinning for skeletal meshes (MD5 models).

Uniform Variables

int u_VertexSkinning
mat4 u_BoneMatrix[MAX_GLSL_BONES]

Attributes

vec4 attr_BoneIndexes —
vec4 attr_BoneWeights —

VertexSkinning_P_N

Translates a vertex and corresponding vertex normal as per the bone matrices (as many as the MAX_GLSL_BONES preprocessor constant allows) contained in the uniform variable u_BoneMatrix, which is set with the u_BoneMatrix::SetUniform_BoneMatrix() method.

Returns void.

Arguments

const vec4 inPosition — The position of the skinned mesh vertex in 3d space that will be transformed by the u_BoneMatrix matrices.
const vec3 inNormal— The normal vector (for lighting calculations) corresponding to the inPosition vertex that will be transformed by the u_BoneMatrix matrices.
inout vec4 position — The transformed vertex.
inout vec3 normal — The transformed normal.

VertexSkinning_P_TBN

Returns void.

Arguments

const vec4 inPosition
const vec3 inTangent
const vec3 inBinormal
const vec3 inNormal
inout vec4 position
inout vec3 tangent
inout vec3 binormal
inout vec3 normal

vertexSimple_vp.glsl

vertexSkinning_vp.glsl

vertexSprite_vp.glsl

volumetricFog_fp.glsl

volumetricFog_vp.glsl