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egl: Add support for querying render buffer. 

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
This commit is contained in:
Chia-I Wu 2009-09-27 17:00:51 +08:00 committed by Brian Paul
parent 55893b9439
commit d845f2754b
2 changed files with 36 additions and 7 deletions
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40
src/egl/main/eglcontext.c
View File

@ -45,6 +45,7 @@ _eglInitContext(_EGLDriver *drv, _EGLContext *ctx,
ctx->DrawSurface = EGL_NO_SURFACE;
ctx->ReadSurface = EGL_NO_SURFACE;
ctx->ClientAPI = api;
ctx->WindowRenderBuffer = EGL_NONE;
return EGL_TRUE;
}
@ -87,6 +88,24 @@ _eglDestroyContext(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
}
#ifdef EGL_VERSION_1_2
static EGLint
_eglQueryContextRenderBuffer(_EGLContext *ctx)
{
_EGLSurface *surf = ctx->DrawSurface;
EGLint rb;
if (!surf)
return EGL_NONE;
if (surf->Type == EGL_WINDOW_BIT && ctx->WindowRenderBuffer != EGL_NONE)
rb = ctx->WindowRenderBuffer;
else
rb = surf->RenderBuffer;
return rb;
}
#endif /* EGL_VERSION_1_2 */
EGLBoolean
_eglQueryContext(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *c,
EGLint attribute, EGLint *value)
@ -94,22 +113,29 @@ _eglQueryContext(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *c,
(void) drv;
(void) dpy;
if (!value)
return _eglError(EGL_BAD_PARAMETER, "eglQueryContext");
switch (attribute) {
case EGL_CONFIG_ID:
*value = GET_CONFIG_ATTRIB(c->Config, EGL_CONFIG_ID);
return EGL_TRUE;
break;
case EGL_CONTEXT_CLIENT_VERSION:
*value = c->ClientVersion;
break;
#ifdef EGL_VERSION_1_2
case EGL_CONTEXT_CLIENT_TYPE:
*value = c->ClientAPI;
return EGL_TRUE;
break;
case EGL_RENDER_BUFFER:
*value = _eglQueryContextRenderBuffer(c);
break;
#endif /* EGL_VERSION_1_2 */
case EGL_CONTEXT_CLIENT_VERSION:
*value = c->ClientVersion;
return EGL_TRUE;
default:
_eglError(EGL_BAD_ATTRIBUTE, "eglQueryContext");
return EGL_FALSE;
return _eglError(EGL_BAD_ATTRIBUTE, "eglQueryContext");
}
return EGL_TRUE;
}

3
src/egl/main/eglcontext.h
View File

@ -24,6 +24,9 @@ struct _egl_context
EGLint ClientAPI; /**< EGL_OPENGL_ES_API, EGL_OPENGL_API, EGL_OPENVG_API */
EGLint ClientVersion; /**< 1 = OpenGLES 1.x, 2 = OpenGLES 2.x */
/* The real render buffer when a window surface is bound */
EGLint WindowRenderBuffer;
};