▼ |  | The Racket Drawing Toolkit

1 | Overview
2 | bitmap%
3 | bitmap-dc%
4 | brush%
5 | brush-list%
6 | color%
7 | color-database<%>
8 | dc<%>
9 | dc-path%
10 | font%
11 | font-list%
12 | font-name-directory<%>
13 | gl-config%
14 | gl-context<%>
15 | linear-gradient%
16 | pdf-dc%
17 | pen%
18 | pen-list%
19 | point%
20 | post-script-dc%
21 | ps-setup%
22 | radial-gradient%
23 | record-dc%
24 | region%
25 | svg-dc%
26 | Drawing Functions
27 | Signature and Unit
28 | Unsafe Libraries
29 | Platform Dependencies
| Bibliography
| Index

On this page:

get-accum-size
get-depth-size
get-double-buffered
get-multisample-size
get-stencil-size
get-stereo
set-accum-size
set-depth-size
set-double-buffered
set-multisample-size
set-stencil-size
set-stereo

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class gl-config% : class?
superclass: object%

A gl-config% object encapsulates configuration information for an OpenGL drawing context. Use a gl-config% object as an initialization argument for canvas% or provide it to make-gl-bitmap.

> constructor (new gl-config%) → (is-a?/c gl-config%)

Creates a GL configuration that indicates double buffering, a depth buffer of size one, no stencil buffer, no accumulation buffer, no multisampling, and not stereo.

> method (send a-gl-config get-accum-size) → (integer-in 0 256)

Reports the accumulation-buffer size (for each of red, green, blue, and alpha) that the configuration requests, where zero means no accumulation buffer is requested.

> method (send a-gl-config get-depth-size) → (integer-in 0 256)

Reports the depth-buffer size that the configuration requests, where zero means no depth buffer is requested.

> method (send a-gl-config get-double-buffered) → boolean?

Reports whether the configuration requests double buffering or not.

> method (send a-gl-config get-multisample-size) → (integer-in 0 256)

Reports the multisampling size that the configuration requests, where zero means no multisampling is requested.

> method (send a-gl-config get-stencil-size) → (integer-in 0 256)

Reports the stencil-buffer size that the configuration requests, where zero means no stencil buffer is requested.

> method (send a-gl-config get-stereo) → boolean?

Reports whether the configuration requests stereo or not.

> method (send a-gl-config set-accum-size on?) → void?
> on? : (integer-in 0 256)

Adjusts the configuration to request a particular accumulation-buffer size for every channel (red, green, blue, and alpha), where zero means no accumulation buffer is requested.

> method (send a-gl-config set-depth-size on?) → void?
> on? : (integer-in 0 256)

Adjusts the configuration to request a particular depth-buffer size, where zero means no depth buffer is requested.

> method (send a-gl-config set-double-buffered on?) → void?
> on? : any/c

Adjusts the configuration to request double buffering or not.

> method (send a-gl-config set-multisample-size on?) → void?
> on? : (integer-in 0 256)

Adjusts the configuration to request a particular multisample size, where zero means no multisampling is requested. If a multisampling context is not available, this request will be ignored.

> method (send a-gl-config set-stencil-size on?) → void?
> on? : (integer-in 0 256)

Adjusts the configuration to request a particular stencil-buffer size, where zero means no stencil buffer is requested.

> method (send a-gl-config set-stereo on?) → void?
> on? : any/c

Adjusts the configuration to request stereo or not.
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