WebGLRenderingContext.renderbufferStorage() - Web APIs 编辑

The WebGLRenderingContext.renderbufferStorage() method of the WebGL API creates and initializes a renderbuffer object's data store.

Syntax

void gl.renderbufferStorage(target, internalFormat, width, height);

target

A Glenum specifying the target renderbuffer object. Possible values:

gl.RENDERBUFFER: Buffer data storage for single images in a renderable internal format.

internalFormat

A Glenum specifying the internal format of the renderbuffer. Possible values:

gl.RGBA4: 4 red bits, 4 green bits, 4 blue bits 4 alpha bits.
gl.RGB565: 5 red bits, 6 green bits, 5 blue bits.
gl.RGB5_A1: 5 red bits, 5 green bits, 5 blue bits, 1 alpha bit.
gl.DEPTH_COMPONENT16: 16 depth bits.
gl.STENCIL_INDEX8: 8 stencil bits.
gl.DEPTH_STENCIL
When using a WebGL 2 context, the following values are available additionally:
- gl.R8
- gl.R8UI
- gl.R8I
- gl.R16UI
- gl.R16I
- gl.R32UI
- gl.R32I
- gl.RG8
- gl.RG8UI
- gl.RG8I
- gl.RG16UI
- gl.RG16I
- gl.RG32UI
- gl.RG32I
- gl.RGB8
- gl.RGBA8
- gl.SRGB8_ALPHA8 (also available as an extension for WebGL 1, see below)
- gl.RGB10_A2
- gl.RGBA8UI
- gl.RGBA8I
- gl.RGB10_A2UI
- gl.RGBA16UI
- gl.RGBA16I
- gl.RGBA32I
- gl.RGBA32UI
- gl.DEPTH_COMPONENT24
- gl.DEPTH_COMPONENT32F
- gl.DEPTH24_STENCIL8
- gl.DEPTH32F_STENCIL8
When using the WEBGL_color_buffer_float extension:
- ext.RGBA32F_EXT: RGBA 32-bit floating-point type.
- ext.RGB32F_EXT: RGB 32-bit floating-point type.
When using the EXT_sRGB extension:
- ext.SRGB8_ALPHA8_EXT: 8-bit sRGB and alpha.
When using a WebGL 2 context and the EXT_color_buffer_float extension:
- gl.R16F
- gl.RG16F
- gl.RGBA16F
- gl.R32F
- gl.RG32F
- gl.RGBA32F
- gl.R11F_G11F_B10F

width

A GLsizei specifying the width of the renderbuffer in pixels.

height

A GLsizei specifying the height of the renderbuffer in pixels.

None.

gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, 256, 256);

Specification	Status	Comment
WebGL 1.0 The definition of 'renderbufferStorage' in that specification.	Recommendation	Initial definition for WebGL.
OpenGL ES 2.0 The definition of 'glRenderbufferStorage' in that specification.	Standard	Man page of the OpenGL ES 2 API.
WebGL 2.0 The definition of 'getRenderbufferParameter' in that specification.	Editor's Draft	Updated definition for WebGL 2.
OpenGL ES 3.0 The definition of 'glRenderbufferStorage' in that specification.	Standard	Man page of the (similar) OpenGL ES 3 API. Adds many new internal formats.

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