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# docs.GL

OpenGL 4
OpenGL 3
OpenGL ES 3

# glRenderbufferStorageMultisample

## Name

glRenderbufferStorageMultisample — establish data storage, format, dimensions and sample count of a renderbuffer object's image

## C Specification

`void glRenderbufferStorageMultisample(` | GLenum target,
| GLsizei samples,
| GLenum internalformat,
| GLsizei width,
| GLsizei height`)`;

## Parameters

`target`

  Specifies a binding to which the target of the allocation and must be `GL_RENDERBUFFER`.

`samples`

  Specifies the number of samples to be used for the renderbuffer object's storage.

`internalformat`

  Specifies the internal format to use for the renderbuffer object's image.

`width`

  Specifies the width of the renderbuffer, in pixels.

`height`

  Specifies the height of the renderbuffer, in pixels.

## Description

`glRenderbufferStorageMultisample` establishes the data storage, format, dimensions and number of samples of a renderbuffer object's image.

The target of the operation, specified by `target` must be `GL_RENDERBUFFER`. `internalformat` specifies the internal format to be used for the renderbuffer object's storage and must be a color-renderable, depth-renderable, or stencil-renderable format, as shown in Table 1 below. `width` and `height` are the dimensions, in pixels, of the renderbuffer. Both `width` and `height` must be less than or equal to the value of `GL_MAX_RENDERBUFFER_SIZE`. `samples` specifies the number of samples to be used for the renderbuffer object's image. If `internalformat` is a signed or unsigned integer format then `samples` must be 0. Otherwise, `samples` must be less than or equal to the maximum number of samples supported for `internalformat`. (see glGetInternalformativ).

Upon success, `glRenderbufferStorageMultisample` deletes any existing data store for the renderbuffer image and the contents of the data store after calling `glRenderbufferStorageMultisample` are undefined.

Table 1. Sized Internal Formats

Sized Internal Format | Base Format | Red Bits | Green Bits | Blue Bits | Alpha Bits
--- | --- | --- | --- | --- | ---
`GL_R8` | `GL_RED` | 8 |  |  |
`GL_R8UI` | `GL_RED_INTEGER` | ui8 |  |  |
`GL_R8I` | `GL_RED_INTEGER` | i8 |  |  |
`GL_R16UI` | `GL_RED_INTEGER` | ui16 |  |  |
`GL_R16I` | `GL_RED_INTEGER` | i16 |  |  |
`GL_R32UI` | `GL_RED_INTEGER` | ui32 |  |  |
`GL_R32I` | `GL_RED_INTEGER` | i32 |  |  |
`GL_RG8` | `GL_RG` | 8 | 8 |  |
`GL_RG8UI` | `GL_RG_INTEGER` | ui8 | ui8 |  |
`GL_RG8I` | `GL_RG_INTEGER` | i8 | i8 |  |
`GL_RG16UI` | `GL_RG_INTEGER` | ui16 | ui16 |  |
`GL_RG16I` | `GL_RG_INTEGER` | i16 | i16 |  |
`GL_RG32UI` | `GL_RG_INTEGER` | ui32 | ui32 |  |
`GL_RG32I` | `GL_RG_INTEGER` | i32 | i32 |  |
`GL_RGB8` | `GL_RGB` | 8 | 8 | 8 |
`GL_RGB565` | `GL_RGB` | 5 | 6 | 5 |
`GL_RGBA8` | `GL_RGBA` | 8 | 8 | 8 | 8
`GL_SRGB8_ALPHA8` | `GL_RGBA` | 8 | 8 | 8 | 8
`GL_RGB5_A1` | `GL_RGBA` | 5 | 5 | 5 | 1
`GL_RGBA4` | `GL_RGBA` | 4 | 4 | 4 | 4
`GL_RGB10_A2` | `GL_RGBA` | 10 | 10 | 10 | 2
`GL_RGBA8UI` | `GL_RGBA_INTEGER` | ui8 | ui8 | ui8 | ui8
`GL_RGBA8I` | `GL_RGBA_INTEGER` | i8 | i8 | i8 | i8
`GL_RGB10_A2UI` | `GL_RGBA_INTEGER` | ui10 | ui10 | ui10 | ui2
`GL_RGBA16UI` | `GL_RGBA_INTEGER` | ui16 | ui16 | ui16 | ui16
`GL_RGBA16I` | `GL_RGBA_INTEGER` | i16 | i16 | i16 | i16
`GL_RGBA32I` | `GL_RGBA_INTEGER` | i32 | i32 | i32 | i32
`GL_RGBA32UI` | `GL_RGBA_INTEGER` | ui32 | ui32 | ui32 | ui32

Sized Internal Format | Base Format | Depth Bits | Stencil Bits
--- | --- | --- | ---
`GL_DEPTH_COMPONENT16` | `GL_DEPTH_COMPONENT` | 16 |
`GL_DEPTH_COMPONENT24` | `GL_DEPTH_COMPONENT` | 24 |
`GL_DEPTH_COMPONENT32F` | `GL_DEPTH_COMPONENT` | f32 |
`GL_DEPTH24_STENCIL8` | `GL_DEPTH_STENCIL` | 24 | 8
`GL_DEPTH32F_STENCIL8` | `GL_DEPTH_STENCIL` | f32 | 8
`GL_STENCIL_INDEX8` | `GL_STENCIL` |  | 8

## Notes

Since different implementations may support different sample counts for multisample rendering, the actual number of samples allocated for the renderbuffer image is implementation-dependent. However, the resulting value for `GL_RENDERBUFFER_SAMPLES` is guaranteed to be greater than or equal to `samples` and no more than the next larger sample count supported by the implementation.

## Errors

`GL_INVALID_ENUM` is generated if `target` is not `GL_RENDERBUFFER`.

`GL_INVALID_VALUE` is generated if `samples` is greater than the maximum number of samples supported for `internalformat`.

`GL_INVALID_ENUM` is generated if `internalformat` is not a color-renderable, depth-renderable, or stencil-renderable format.

`GL_INVALID_OPERATION` is generated if `internalformat` is a signed or unsigned integer format and `samples` is greater than 0.

`GL_INVALID_VALUE` is generated if either of `width` or `height` is negative, or greater than the value of `GL_MAX_RENDERBUFFER_SIZE`.

`GL_OUT_OF_MEMORY` is generated if the GL is unable to create a data store of the requested size.

## API Version Support

| OpenGL ES API Version
--- | ---
Function Name | 2.0 | 3.0 | 3.1
glRenderbufferStorageMultisample | - | ✔ | ✔

## See Also

glGenRenderbuffers, glGetInternalformativ, glBindRenderbuffer, glRenderbufferStorage, glFramebufferRenderbuffer, glDeleteRenderbuffers

## Copyright

Copyright © 2010-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. https://opencontent.org/openpub/.

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