OVR_multiview2.framebufferTextureMultiviewOVR() - Web APIs 编辑

The OVR_multiview2.framebufferTextureMultiviewOVR() method of the WebGL API attaches a multiview texture to a WebGLFramebuffer.

Syntax

void ext.framebufferTextureMultiviewOVR(target, attachment, texture, level, baseViewIndex, numViews);

target

A GLenum specifying the binding point (target). Possible values:

gl.FRAMEBUFFER: Collection buffer data storage of color, alpha, depth and stencil buffers used to render an image.
gl.DRAW_FRAMEBUFFER: Equivalent to gl.FRAMEBUFFER. Used as a destination for drawing, rendering, clearing, and writing operations.
gl.READ_FRAMEBUFFER: Used as a source for reading operations.

attachment

A GLenum specifying the attachment point for the texture. Possible values:

gl.COLOR_ATTACHMENT0: Attaches the texture to the framebuffer's color buffer.
gl.DEPTH_ATTACHMENT: Attaches the texture to the framebuffer's depth buffer.
gl.STENCIL_ATTACHMENT: Attaches the texture to the framebuffer's stencil buffer.
gl.DEPTH_STENCIL_ATTACHMENT: depth and stencil buffer.
gl.COLOR_ATTACHMENT1 gl.COLOR_ATTACHMENT2 gl.COLOR_ATTACHMENT3 gl.COLOR_ATTACHMENT4 gl.COLOR_ATTACHMENT5 gl.COLOR_ATTACHMENT6 gl.COLOR_ATTACHMENT7 gl.COLOR_ATTACHMENT8 gl.COLOR_ATTACHMENT9 gl.COLOR_ATTACHMENT10 gl.COLOR_ATTACHMENT11 gl.COLOR_ATTACHMENT12 gl.COLOR_ATTACHMENT13 gl.COLOR_ATTACHMENT14 gl.COLOR_ATTACHMENT15
When using the WEBGL_draw_buffers extension:
- ext.COLOR_ATTACHMENT0_WEBGL (same as gl.COLOR_ATTACHMENT0)
  ext.COLOR_ATTACHMENT1_WEBGL ext.COLOR_ATTACHMENT2_WEBGL ext.COLOR_ATTACHMENT3_WEBGL ext.COLOR_ATTACHMENT4_WEBGL ext.COLOR_ATTACHMENT5_WEBGL ext.COLOR_ATTACHMENT6_WEBGL ext.COLOR_ATTACHMENT7_WEBGL ext.COLOR_ATTACHMENT8_WEBGL ext.COLOR_ATTACHMENT9_WEBGL ext.COLOR_ATTACHMENT10_WEBGL ext.COLOR_ATTACHMENT11_WEBGL ext.COLOR_ATTACHMENT12_WEBGL ext.COLOR_ATTACHMENT13_WEBGL ext.COLOR_ATTACHMENT14_WEBGL ext.COLOR_ATTACHMENT15_WEBGL
When using the WEBGL_depth_texture extension:
- ext.DEPTH_STENCIL_ATTACHMENT: Depth and stencil buffer data storage.

texture

A WebGLTexture object whose image to attach.

level

A GLint specifying the mipmap level of the texture image to be attached. Must be 0.

baseViewIndex

A GLint specifying the base view index of the framebuffer object attachment.

numViews

A GLsizei specifying the number of views of the framebuffer object attachment.

None.

A gl.INVALID_ENUM error is thrown if
- target is not gl.FRAMEBUFFER.
- attachment is not one of the accepted attachment points.
A gl.INVALID_VALUE error is thrown if
- level is not 0.
- if numViews is less than one or more than MAX_VIEWS_OVR.
A gl.INVALID_OPERATION error is thrown if texture isn't 0 or the name of an existing texture object.

ext.framebufferTextureMultiviewOVR(gl.DRAW_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, colorTex, 0, 0, 2);

Specification	Status
OVR_multiview2	Community Approved

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