WebGLRenderingContext: getRenderbufferParameter() method
The WebGLRenderingContext.getRenderbufferParameter()
method of the WebGL API returns information
about the renderbuffer.
Syntax
js
getRenderbufferParameter(target, pname)
Parameters
target
-
A
GLenum
specifying the target renderbuffer object. Possible values:gl.RENDERBUFFER
-
Buffer data storage for single images in a renderable internal format.
pname
-
A
GLenum
specifying the information to query. Possible values:gl.RENDERBUFFER_WIDTH
-
Returns a
GLint
indicating the width of the image of the currently bound renderbuffer. gl.RENDERBUFFER_HEIGHT
-
Returns a
GLint
indicating the height of the image of the currently bound renderbuffer. gl.RENDERBUFFER_INTERNAL_FORMAT
-
Returns a
GLenum
indicating the internal format of the currently bound renderbuffer. The default isgl.RGBA4
. Possible return 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.RENDERBUFFER_GREEN_SIZE
-
Returns a
GLint
that is the resolution size (in bits) for the green color. gl.RENDERBUFFER_BLUE_SIZE
-
Returns a
GLint
that is the resolution size (in bits) for the blue color. gl.RENDERBUFFER_RED_SIZE
-
Returns a
GLint
that is the resolution size (in bits) for the red color. gl.RENDERBUFFER_ALPHA_SIZE
-
Returns a
GLint
that is the resolution size (in bits) for the alpha component. gl.RENDERBUFFER_DEPTH_SIZE
-
Returns a
GLint
that is the resolution size (in bits) for the depth component. gl.RENDERBUFFER_STENCIL_SIZE
-
Returns a
GLint
that is the resolution size (in bits) for the stencil component.
When using a WebGL 2 context, the following value is available additionally:
gl.RENDERBUFFER_SAMPLES
-
Returns a
GLint
indicating the number of samples of the image of the currently bound renderbuffer.
Return value
Examples
js
gl.getRenderbufferParameter(gl.RENDERBUFFER, gl.RENDERBUFFER_WIDTH);
Specifications
Specification |
---|
WebGL Specification # 5.14.7 |
WebGL 2.0 Specification # 3.7.5 |
Browser compatibility
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