Mipmap

Constructors

this

this()

Creates empty

this

this(int maxLevel, int w, int h)

Set number of levels and size maxLevel = 0 => only one image maxLevel = 1 => one image + one 2x downsampled mipmap etc...

this

this(int maxLevel, OwnedImage!COLOR level0)

Creates a Mipmap out of a flat OwnedImage. This takes ownership of the given image, which is now owned by the Mipmap.

Destructor

~this

~this()

Undocumented in source.

Members

Enums

Quality

enum Quality

Undocumented in source.

Functions

cubicSample

auto cubicSample(int level, float x, float y)

Cubic filtering mode, using a Catmull-Rom bicubic filter. Integer level, spatial linear interpolation. x and y are in base level coordinates (top-left pixel is on (0.5, 0.5) coordinates). Clamped to borders. Reference: https://registry.khronos.org/OpenGL/extensions/IMG/IMG_texture_filter_cubic.txt

generateLevel

void generateLevel(int level, Quality quality, box2i updateRect)

Regenerates one level updateRect expressed in level i-th coordinates

generateMipmaps

void generateMipmaps(Quality quality)

Regenerates the whole upper levels.

generateNextLevel

box2i generateNextLevel(Quality quality, box2i updateRectPreviousLevel, int level)

Regenerates a single mipmap level based on changes in the provided rectangle (expressed in level 0 coordinates). updateRect expressed in level 0 coordinates In general if you have several subparts of mipmaps to update, make sure a level is fully completed before computing the next one.

height

int height()

linearMipmapSample

auto linearMipmapSample(float level, float x, float y)

Interpolates a color between mipmap levels. Floating-point level, spatial linear interpolation. x and y are in base level coordinates (top-left pixel is on (0.5, 0.5) coordinates). Clamped to borders.

linearSample

auto linearSample(int level, float x, float y)

Interpolates a color. Integer level, spatial linear interpolation. x and y are in base level coordinates (top-left pixel is on (0.5, 0.5) coordinates). Clamped to borders.

numLevels

int numLevels()

size

void size(int maxLevel, int w, int h)

Undocumented in source. Be warned that the author may not have intended to support it.

width

int width()

Variables

levels

Vec!(OwnedImage!COLOR) levels;

Undocumented in source.

• Mipmap