Baseline Widely available
å®éªæ§: è¿æ¯ä¸é¡¹å®éªæ§ææ¯
å¨å°å
¶ç¨äºç产ä¹åï¼è¯·ä»ç»æ£æ¥æµè§å¨å
¼å®¹æ§è¡¨æ ¼ã
ImageBitmapRenderingContext
æ¥å£æ¯ canvas çæ¸²æä¸ä¸æï¼å®åªæä¾äºä½¿ç¨ç»å® ImageBitmap
æ¿æ¢ canvas çåè½ãå®çä¸ä¸æ ID (HTMLCanvasElement.getContext()
æ OffscreenCanvas.getContext()
ç第ä¸ä¸ªåæ°) æ¯ "bitmaprenderer"
ã
è¿ä¸ªæ¥å£å¯ç¨äº window context å worker context.
æ¹æ³ImageBitmapRenderingContext.transferFromImageBitmap()
å¨ä¸æ¤æ¸²æä¸ä¸æç¸å
³ç canvas 䏿¾ç¤ºç»å®ç ImageBitmap
ã ImageBitmap
çæææè¢«è½¬ç§»å°ç»å¸ä¸ãè¿ä¸ªå½æ°ä»¥åå½å为transferImageBitmap()
ï¼ä½å¨è§èä¸ä¿®æ¹äºåååã为äºé¿å
å½±åä¹åç代ç ï¼æ§åç§°ä½ä¸ºå«å被ä¿ç䏿¥ã
Currently drafted as a proposal in the OffscreenCanvas specification.
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