GPUShaders::Common::Common_parallax Class Reference

Common parallax general shader. More...

Public Member Functions
vec2	parallax (vec2 uv, vec3 vTangentDir, texture2D depth, out float shiftDistance)
vec3	updateFragmentPosition (float shiftDistance, vec3 viewPos, mat4 proj)

Detailed Description

Common parallax general shader.

See also

GPUShaders::Common::Samplers

Member Function Documentation

parallax()

vec2 GPUShaders::Common::Common_parallax::parallax ( vec2  uv, vec3  vTangentDir, texture2D  depth, out float  shiftDistance  )

inline

Perform parallax mapping by marching against the local depth map, and output the final UV to use.

Parameters

uv	the initial texture coordinates
vTangentDir	the view direction in tangent space
depth	the heightmap
shiftDistance	will contain the final shift along the view direction

Returns

the final texture coordinates to use to query the material maps

updateFragmentPosition()

vec3 GPUShaders::Common::Common_parallax::updateFragmentPosition ( float  shiftDistance, vec3  viewPos, mat4  proj  )

inline

Compute the new view space position of the parallax-mapped fragment and update its depth in the depth buffer.

Parameters

shiftDistance	the shift along the view direction
viewPos	the initial view space fragment position
proj	the projection matrix

Returns

the updated position

Bug:

Depth output is sometimes incorrect, leading to floating effects on the surface of the object.

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The documentation for this class was generated from the following file:

• resources/common/shaders/objects/common_parallax.glsl