eglQueryContext - EGL Reference Pages

From 7a8d0d8bc2572707c9d35006f30ea835c86954b0 Mon Sep 17 00:00:00 2001 From: sotech117 Date: Tue, 9 Apr 2024 03:14:17 -0400 Subject: first draft to generate waves --- .../sdk/docs/man/html/eglQueryContext.xhtml | 267 +++++++++++++++++++++ 1 file changed, 267 insertions(+) create mode 100644 glew/auto/EGL-Registry/sdk/docs/man/html/eglQueryContext.xhtml (limited to 'glew/auto/EGL-Registry/sdk/docs/man/html/eglQueryContext.xhtml') diff --git a/glew/auto/EGL-Registry/sdk/docs/man/html/eglQueryContext.xhtml b/glew/auto/EGL-Registry/sdk/docs/man/html/eglQueryContext.xhtml new file mode 100644 index 0000000..c121448 --- /dev/null +++ b/glew/auto/EGL-Registry/sdk/docs/man/html/eglQueryContext.xhtml @@ -0,0 +1,267 @@ + + + + eglQueryContext - EGL Reference Pages + + + + +

Name

eglQueryContext — + return EGL rendering context information +

C Specification

+ + + + + + + + + + + + + + + + + +

+ `EGLBoolean eglQueryContext(` +	EGLDisplay `display`,
	EGLContext `context`,
	EGLint `attribute`,
	EGLint * `value)`;

Parameters

+ + + display + + +: +
+ Specifies the EGL display connection. +
+
+ + + context + + +: +
+ Specifies the EGL rendering context to query. +
+
+ + + attribute + + +: +
+ Specifies the EGL rendering context attribute to be returned. +
+
+ + + value + + +: +
+ Returns the requested value. +
+

Description

+ eglQueryContext returns in + value the value of + attribute for context. + attribute can be one of the following: +

+ + EGL_CONFIG_ID + +

+ Returns the ID of the EGL frame buffer configuration + with respect to which the context was created. +

+ + EGL_CONTEXT_CLIENT_TYPE + +

+ Returns the type of client API which the context + supports (one of + EGL_OPENGL_API, + EGL_OPENGL_ES_API, or + EGL_OPENVG_API). +

+ + EGL_CONTEXT_CLIENT_VERSION + +

+ Returns the version of the client API which the + context supports, as specified at context creation + time. The resulting value is only meaningful for an + OpenGL ES context. +

+ + EGL_RENDER_BUFFER + +

+ Returns the buffer which client API rendering + via the context will use. The value returned + depends on properties of both the context, and + the surface to which the context is bound: +

+
+ If the context is bound to a pixmap surface, + then EGL_SINGLE_BUFFER will + be returned. +
+
+
+ If the context is bound to a pbuffer surface, + then EGL_BACK_BUFFER will + be returned. +
+
+
+ If the context is bound to a window surface, + then either EGL_BACK_BUFFER + or EGL_SINGLE_BUFFER may be + returned. The value returned depends on both the + buffer requested by the setting of the + EGL_RENDER_BUFFER property + of the surface (which may be queried by calling + eglQuerySurface), and on + the client API (not all client APIs support + single-buffer rendering to window surfaces). +
+
+
+ If the context is not bound to a surface, such + as an OpenGL ES context bound to a framebuffer + object, then EGL_NONE will + be returned. +
+

Notes

+ Attributes EGL_CONTEXT_CLIENT_TYPE and + EGL_RENDER_BUFFER are supported only if + the EGL version is 1.2 or greater. +

+ Attribute EGL_CONTEXT_CLIENT_VERSION is + supported only if the EGL version is 1.3 or greater. +

Errors

+ EGL_FALSE is returned on failure, + EGL_TRUE otherwise. + value is not modified when + EGL_FALSE is returned. +

+ EGL_BAD_DISPLAY is generated if + display is not an EGL display connection. +

+ EGL_NOT_INITIALIZED is generated if + display has not been initialized. +

+ EGL_BAD_CONTEXT is generated if + context is not an EGL rendering context. +

+ EGL_BAD_ATTRIBUTE is generated if + attribute is not a valid context attribute. +