SYNOPSIS

glPtexViewer
[-e environment map]
[-d HDR diffuse map]
[-s HDR specular map]
[-y]
[--disp displacement scale]
[--bump bump scale]
[-l isolation level]
[-c animation loops]
[-f]
ptex color file
ptex displacement file
ptex occlusion file
ptex specular file
objfile(s)

DESCRIPTION

glPtexViewer is a stand-alone application that showcases advanced HDR shading with color, displacement, occlusion and specular ptex maps. Multiple controls are available to experiment with the algorithms.

OPTIONS

-e environment map

A low dynamic range spherical environment map used as a background. Ideally, a color-normalized version of the HDR light probe.

-d HDR diffuse map

An HDR file containing a diffuse environment map (typically they are low resolution blurry hemispherical convolutions of the environment light probe).

-s environment map

An HDR file containing a specular environment map.

--disp displacement scale

A scalar multiplier for the shader displacement values.

--bump displacement scale

A scalar multiplier for the shader bump values.

-y

Swap Z-up geometry to Y-UP.

-l isolation level

Select the desired isolation level of adaptive feature isolation. This can be useful when trying to load large pieces of geometry.

-c animation frequency

Number of repetitions of the animation loop (default=0 is infinite)

-f

Launches the application in full-screen mode (if is supported by GLFW on the OS)

ptex color file

A ptex file containing RGB channels read as material albedo color.

ptex displacement file

A single-channel ptex file (preferably float precision) containing the displacement values.

ptex occlusion file

A single-channel ptex file (preferably 8 bits precision) containing a pre-computed ambient occlusion signal.

ptex specular file

A single-channel ptex file (preferably 8 bits precision) applied to modulate the specular reflectance of the material

objfile(s)

A sequence of obj files used as an animation loop (the topology has to match the data contained in all the ptex files !)

Keyboard Controls

q      : quit
esc    : hide GUI
x      : save screenshot
f      : fit frame
+/-    : increase / decrease tessellation rate
r      : reload and re-compile the shader files
e      : draw normals

SEE ALSO

Other examples : glViewer, glShareTopology, glStencilViewer, glPtexViewer, glEvalLimit, glFVarViewer, dxViewer, dxPtexViewer, mayaPolySmooth,