- cpp3ds
- ContextSettings
Structure defining the settings of the OpenGL context attached to a window. More...
#include <ContextSettings.hpp>
Public Types | |
| enum | Attribute { Default = 0, Core = 1 << 0, Debug = 1 << 2 } |
| Enumeration of the context attribute flags. More... | |
Public Member Functions | |
| ContextSettings (Screen scr=TopScreen, unsigned int depth=0, unsigned int stencil=0, unsigned int antialiasing=0, unsigned int major=1, unsigned int minor=1, unsigned int attributes=Default) | |
| Default constructor. More... | |
Public Attributes | |
| Screen | screen |
| unsigned int | depthBits |
| Bits of the depth buffer. More... | |
| unsigned int | stencilBits |
| Bits of the stencil buffer. More... | |
| unsigned int | antialiasingLevel |
| Level of antialiasing. More... | |
| unsigned int | majorVersion |
| Major number of the context version to create. More... | |
| unsigned int | minorVersion |
| Minor number of the context version to create. More... | |
| Uint32 | attributeFlags |
| The attribute flags to create the context with. More... | |
Structure defining the settings of the OpenGL context attached to a window.
ContextSettings allows to define several advanced settings of the OpenGL context attached to a window.
All these settings with the exception of the compatibility flag and anti-aliasing level have no impact on the regular cpp3ds rendering (graphics module), so you may need to use this structure only if you're using cpp3ds as a windowing system for custom OpenGL rendering.
The depthBits and stencilBits members define the number of bits per pixel requested for the (respectively) depth and stencil buffers.
antialiasingLevel represents the requested number of multisampling levels for anti-aliasing.
majorVersion and minorVersion define the version of the OpenGL context that you want. Only versions greater or equal to 3.0 are relevant; versions lesser than 3.0 are all handled the same way (i.e. you can use any version < 3.0 if you don't want an OpenGL 3 context).
When requesting a context with a version greater or equal to 3.2, you have the option of specifying whether the context should follow the core or compatibility profile of all newer (>= 3.2) OpenGL specifications. For versions 3.0 and 3.1 there is only the core profile. By default a compatibility context is created. You only need to specify the core flag if you want a core profile context to use with your own OpenGL rendering. Warning: The graphics module will not function if you request a core profile context. Make sure the attributes are set to Default if you want to use the graphics module.
Setting the debug attribute flag will request a context with additional debugging features enabled. Depending on the system, this might be required for advanced OpenGL debugging. OpenGL debugging is disabled by default.
Special Note for OS X: Apple only supports choosing between either a legacy context (OpenGL 2.1) or a core context (OpenGL version depends on the operating system version but is at least 3.2). Compatibility contexts are not supported. Further information is available on the OpenGL Capabilities Tables page. OS X also currently does not support debug contexts.
Please note that these values are only a hint. No failure will be reported if one or more of these values are not supported by the system; instead, cpp3ds will try to find the closest valid match. You can then retrieve the settings that the window actually used to create its context, with Window::getSettings().
Definition at line 47 of file ContextSettings.hpp.
Enumeration of the context attribute flags.
| Enumerator | |
|---|---|
| Default |
Non-debug, compatibility context (this and the core attribute are mutually exclusive) |
| Core |
Core attribute. |
| Debug |
Debug attribute. |
Definition at line 53 of file ContextSettings.hpp.
|
inlineexplicit |
Default constructor.
| depth | Depth buffer bits |
| stencil | Stencil buffer bits |
| antialiasing | Antialiasing level |
| major | Major number of the context version |
| minor | Minor number of the context version |
| attributes | Attribute flags of the context |
Definition at line 71 of file ContextSettings.hpp.
| unsigned int cpp3ds::ContextSettings::antialiasingLevel |
Level of antialiasing.
Definition at line 88 of file ContextSettings.hpp.
| Uint32 cpp3ds::ContextSettings::attributeFlags |
The attribute flags to create the context with.
Definition at line 91 of file ContextSettings.hpp.
| unsigned int cpp3ds::ContextSettings::depthBits |
Bits of the depth buffer.
Definition at line 86 of file ContextSettings.hpp.
| unsigned int cpp3ds::ContextSettings::majorVersion |
Major number of the context version to create.
Definition at line 89 of file ContextSettings.hpp.
| unsigned int cpp3ds::ContextSettings::minorVersion |
Minor number of the context version to create.
Definition at line 90 of file ContextSettings.hpp.
| unsigned int cpp3ds::ContextSettings::stencilBits |
Bits of the stencil buffer.
Definition at line 87 of file ContextSettings.hpp.