You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
3.0 KiB
JavaScript
99 lines
3.0 KiB
JavaScript
import WebGLConstants from "../Core/WebGLConstants.js";
|
|
|
|
/**
|
|
* The data type of a pixel.
|
|
*
|
|
* @enum {Number}
|
|
* @see PostProcessStage
|
|
*/
|
|
var PixelDatatype = {
|
|
UNSIGNED_BYTE: WebGLConstants.UNSIGNED_BYTE,
|
|
UNSIGNED_SHORT: WebGLConstants.UNSIGNED_SHORT,
|
|
UNSIGNED_INT: WebGLConstants.UNSIGNED_INT,
|
|
FLOAT: WebGLConstants.FLOAT,
|
|
HALF_FLOAT: WebGLConstants.HALF_FLOAT_OES,
|
|
UNSIGNED_INT_24_8: WebGLConstants.UNSIGNED_INT_24_8,
|
|
UNSIGNED_SHORT_4_4_4_4: WebGLConstants.UNSIGNED_SHORT_4_4_4_4,
|
|
UNSIGNED_SHORT_5_5_5_1: WebGLConstants.UNSIGNED_SHORT_5_5_5_1,
|
|
UNSIGNED_SHORT_5_6_5: WebGLConstants.UNSIGNED_SHORT_5_6_5,
|
|
};
|
|
|
|
/**
|
|
@private
|
|
*/
|
|
PixelDatatype.toWebGLConstant = function (pixelDatatype, context) {
|
|
switch (pixelDatatype) {
|
|
case PixelDatatype.UNSIGNED_BYTE:
|
|
return WebGLConstants.UNSIGNED_BYTE;
|
|
case PixelDatatype.UNSIGNED_SHORT:
|
|
return WebGLConstants.UNSIGNED_SHORT;
|
|
case PixelDatatype.UNSIGNED_INT:
|
|
return WebGLConstants.UNSIGNED_INT;
|
|
case PixelDatatype.FLOAT:
|
|
return WebGLConstants.FLOAT;
|
|
case PixelDatatype.HALF_FLOAT:
|
|
return context.webgl2
|
|
? WebGLConstants.HALF_FLOAT
|
|
: WebGLConstants.HALF_FLOAT_OES;
|
|
case PixelDatatype.UNSIGNED_INT_24_8:
|
|
return WebGLConstants.UNSIGNED_INT_24_8;
|
|
case PixelDatatype.UNSIGNED_SHORT_4_4_4_4:
|
|
return WebGLConstants.UNSIGNED_SHORT_4_4_4_4;
|
|
case PixelDatatype.UNSIGNED_SHORT_5_5_5_1:
|
|
return WebGLConstants.UNSIGNED_SHORT_5_5_5_1;
|
|
case PixelDatatype.UNSIGNED_SHORT_5_6_5:
|
|
return PixelDatatype.UNSIGNED_SHORT_5_6_5;
|
|
}
|
|
};
|
|
|
|
/**
|
|
@private
|
|
*/
|
|
PixelDatatype.isPacked = function (pixelDatatype) {
|
|
return (
|
|
pixelDatatype === PixelDatatype.UNSIGNED_INT_24_8 ||
|
|
pixelDatatype === PixelDatatype.UNSIGNED_SHORT_4_4_4_4 ||
|
|
pixelDatatype === PixelDatatype.UNSIGNED_SHORT_5_5_5_1 ||
|
|
pixelDatatype === PixelDatatype.UNSIGNED_SHORT_5_6_5
|
|
);
|
|
};
|
|
|
|
/**
|
|
@private
|
|
*/
|
|
PixelDatatype.sizeInBytes = function (pixelDatatype) {
|
|
switch (pixelDatatype) {
|
|
case PixelDatatype.UNSIGNED_BYTE:
|
|
return 1;
|
|
case PixelDatatype.UNSIGNED_SHORT:
|
|
case PixelDatatype.UNSIGNED_SHORT_4_4_4_4:
|
|
case PixelDatatype.UNSIGNED_SHORT_5_5_5_1:
|
|
case PixelDatatype.UNSIGNED_SHORT_5_6_5:
|
|
case PixelDatatype.HALF_FLOAT:
|
|
return 2;
|
|
case PixelDatatype.UNSIGNED_INT:
|
|
case PixelDatatype.FLOAT:
|
|
case PixelDatatype.UNSIGNED_INT_24_8:
|
|
return 4;
|
|
}
|
|
};
|
|
|
|
/**
|
|
@private
|
|
*/
|
|
PixelDatatype.validate = function (pixelDatatype) {
|
|
return (
|
|
pixelDatatype === PixelDatatype.UNSIGNED_BYTE ||
|
|
pixelDatatype === PixelDatatype.UNSIGNED_SHORT ||
|
|
pixelDatatype === PixelDatatype.UNSIGNED_INT ||
|
|
pixelDatatype === PixelDatatype.FLOAT ||
|
|
pixelDatatype === PixelDatatype.HALF_FLOAT ||
|
|
pixelDatatype === PixelDatatype.UNSIGNED_INT_24_8 ||
|
|
pixelDatatype === PixelDatatype.UNSIGNED_SHORT_4_4_4_4 ||
|
|
pixelDatatype === PixelDatatype.UNSIGNED_SHORT_5_5_5_1 ||
|
|
pixelDatatype === PixelDatatype.UNSIGNED_SHORT_5_6_5
|
|
);
|
|
};
|
|
|
|
export default Object.freeze(PixelDatatype);
|