Constant Index
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G |
| GD_BELL
| GD_BESSEL
| GD_BICUBIC
| GD_BICUBIC_FIXED
| GD_BILINEAR_FIXED
| GD_BLACKMAN
| GD_BOX
| GD_BSPLINE
| GD_CATMULLROM
| GD_CROP_BLACK
| GD_CROP_DEFAULT
| GD_CROP_SIDES
| GD_CROP_TRANSPARENT
| GD_CROP_WHITE
| GD_GAUSSIAN
| GD_GENERALIZED_CUBIC
| GD_HAMMING
| GD_HANNING
| GD_HERMITE
| GD_LINEAR
| GD_MITCHELL
| GD_NEAREST_NEIGHBOUR
| GD_POWER
| GD_QUADRATIC
| GD_QUANT_DEFAULT
| GD_QUANT_JQUANT
| GD_QUANT_LIQ
| GD_QUANT_NEUQUANT
| GD_SINC
| GD_TRIANGLE
| GD_WEIGHTED4
| gdAntiAliased
| gdBrushed
| gdCropMode
| gdDisposalNone
| gdDisposalRestoreBackground
| gdDisposalRestorePrevious
| gdDisposalUnknown
| gdHeifCodec
| gdHeifCompression
| gdImageGifAnim
| gdInterpolationMethod
| gdStyled
| gdStyledBrushed
| gdTiled
| gdTransparent
| gdWebpLossless
S |
| Special Colors

Bell
Bessel
Bicubic
fixed point bicubic integer
fixed point bilinear
Blackman
Box
BSpline
Catmullrom
Crop black borders
Same as GD_CROP_TRANSPARENT
Crop using colors of the 4 corners
Crop using the transparent color
Crop white borders
Gaussian
Generalized cubic
Hamming
Hannig
Hermite
bilinear interpolation
Mitchell
Nearest neighbour interpolation
Power
Quadratic
GD_QUANT_LIQ if libimagequant is available, GD_QUANT_JQUANT otherwise.
libjpeg’s old median cut.
A combination of algorithms used in libimagequant aiming for the highest quality at cost of speed.
NeuQuant - approximation using Kohonen neural network.
Sinc
Triangle
4 pixels weighted bilinear interpolation
draw anti aliased
use the current brush, see gdImageSetBrush
Preserve previous frame
First allocated color of palette
Restore to before start of frame
Not recommended
GD_HEIF_CODEC_UNKNOWN GD_HEIF_CODEC_HEVC GD_HEIF_CODEC_AV1
GD_HEIF_CHROMA_420 GD_HEIF_CHROMA_422 GD_HEIF_CHROMA_444
use the current style, see gdImageSetStyle
use the current style and brush
use the current tile, see gdImageSetTile
indicate transparency, what is not the same as the transparent color index; used for lines only
Lossless quality threshold.
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