Returns the first contiguous string of non-whitespace characters in the buffer and returns a pointer to the next non-whitespace character (if any) in

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in an idat chunk, each scanline is a multiple of 8 bits, unlike the lodepng output buffer, and in addition has one extra byte per line: the filter byt

additional constructors

additional constructors

calculate bits per pixel out of colortype and bitdepth*/

NOTE: when realloc returns NULL, it leaves the original memory untouched */

Configure VDB tree (5-level)

Start Raster GL - Enable the GL rasterization pipeline. - Load GLSL shaders

Update apron (for all channels)

dot product

dot product

Draws the edges of the axis-aligned box from `bMin` to `bMax` after being transformed by `xform`.

Dimension of entire atlas, including aprons

Utility functions

Helper function for saving a PNG file. Automatically fills out lodepng arguments. Prints a message on error. This function is defined in file_png.h to

returns 1 if success, 0 if failure ==> nothing done*/

Create a GLSL program object from vertex and fragment shader files

Returns the index of a position within a node at the given level. Suppose a node has resolution r, and its children are numbered from 0 to r^3-1. This

Gets the number of child nodes or child voxels of a node at the given level.

free string pointer and set it to NULL*/

Load a VBX file

Gets the log base 2 branching factor per side of a node at the given level.

Bit operations: Based on Bithacks (Sean Eron Anderson, http://graphics.stanford.edu/~seander/bithacks.html)

TODO: make this faster */

This one is to use for adding huffman symbol, the value bits are written MSB first */

compress using the default or custom zlib function */

ClearGraph Clears the OptiX scene graph

given the code lengths (as stored in the PNG file), generate the tree as defined by Deflate. maxbitlen is the maximum bits that a code in the tree can

dynamically allocates a new string with a copy of the null terminated input text */

creates a new chain node with the given parameters, from the memory in the lists */

Res of single brick, including apron

Gets the size a node at the given level covers in voxels. Same except for return type as `getRange` since 1.1.1.

divide by bits per byte (2^3=8)

Bind GPU texture

Safely check if multiplying two integers will overflow (no undefined behavior, compiler removing the code, etc...) and output result. */

expected_size is expected output size, to avoid intermediate allocations. Set to 0 if not known. */

Outputs various dimensions and positions in the image related to the Adam7 reduced images. passw: output containing the width of the 7 passes passh: o

Element conversions Used to pack/unpack the group, level, and index from a pool reference

Fill data channel

InitializeOptiX Creates the optix context, loads all mesh and volume intersection programs, and prepares the scene graph root.