WEBGL_multi_draw

The WEBGL_multi_draw extension is part of the WebGL API and allows to render more than one primitive with a single function call. This can improve a WebGL application's performance as it reduces binding costs in the renderer and speeds up GPU thread time with uniform data.

MDN Reference

Functions

multiDrawArraysInstancedWEBGL

abstract external fun multiDrawArraysInstancedWEBGL(mode: GLenum, firstsList: Int32Array<ArrayBufferLike>, firstsOffset: UInt53, countsList: Int32Array<ArrayBufferLike>, countsOffset: UInt53, instanceCountsList: Int32Array<ArrayBufferLike>, instanceCountsOffset: UInt53, drawcount: GLsizei)

The WEBGL_multi_draw.multiDrawArraysInstancedWEBGL() method of the WebGL API renders multiple primitives from array data. It is identical to multiple calls to the gl.drawArraysInstanced() method.

multiDrawArraysWEBGL

abstract external fun multiDrawArraysWEBGL(mode: GLenum, firstsList: Int32Array<ArrayBufferLike>, firstsOffset: UInt53, countsList: Int32Array<ArrayBufferLike>, countsOffset: UInt53, drawcount: GLsizei)

The WEBGL_multi_draw.multiDrawArraysWEBGL() method of the WebGL API renders multiple primitives from array data. It is identical to multiple calls to the gl.drawArrays() method.

multiDrawElementsInstancedWEBGL

abstract external fun multiDrawElementsInstancedWEBGL(mode: GLenum, countsList: Int32Array<ArrayBufferLike>, countsOffset: UInt53, type: GLenum, offsetsList: Int32Array<ArrayBufferLike>, offsetsOffset: UInt53, instanceCountsList: Int32Array<ArrayBufferLike>, instanceCountsOffset: UInt53, drawcount: GLsizei)

The WEBGL_multi_draw.multiDrawElementsInstancedWEBGL() method of the WebGL API renders multiple primitives from array data. It is identical to multiple calls to the gl.drawElementsInstanced() method.

multiDrawElementsWEBGL

abstract external fun multiDrawElementsWEBGL(mode: GLenum, countsList: Int32Array<ArrayBufferLike>, countsOffset: UInt53, type: GLenum, offsetsList: Int32Array<ArrayBufferLike>, offsetsOffset: UInt53, drawcount: GLsizei)

The WEBGL_multi_draw.multiDrawElementsWEBGL() method of the WebGL API renders multiple primitives from array data. It is identical to multiple calls to the gl.drawElements() method.