diff options
Diffstat (limited to 'src/glx/apple/apple_xgl_api_read.c')
-rw-r--r-- | src/glx/apple/apple_xgl_api_read.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/src/glx/apple/apple_xgl_api_read.c b/src/glx/apple/apple_xgl_api_read.c deleted file mode 100644 index 36357c7fc2..0000000000 --- a/src/glx/apple/apple_xgl_api_read.c +++ /dev/null @@ -1,134 +0,0 @@ -/* - Copyright (c) 2008, 2009 Apple Inc. - - Permission is hereby granted, free of charge, to any person - obtaining a copy of this software and associated documentation files - (the "Software"), to deal in the Software without restriction, - including without limitation the rights to use, copy, modify, merge, - publish, distribute, sublicense, and/or sell copies of the Software, - and to permit persons to whom the Software is furnished to do so, - subject to the following conditions: - - The above copyright notice and this permission notice shall be - included in all copies or substantial portions of the Software. - - THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - NONINFRINGEMENT. IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT - HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - DEALINGS IN THE SOFTWARE. - - Except as contained in this notice, the name(s) of the above - copyright holders shall not be used in advertising or otherwise to - promote the sale, use or other dealings in this Software without - prior written authorization. -*/ - -/* - * This file works with the glXMakeContextCurrent readable drawable. - * - * The way it works is by swapping the currentDrawable for the currentReadable - * drawable if they are different. - */ -#include <stdbool.h> -#include "apple_xgl_api_read.h" -#include "apple_xgl_api.h" -#include "apple_cgl.h" -#include "apple_glx_context.h" - -extern struct apple_xgl_api __gl_api; - -struct apple_xgl_saved_state -{ - bool swapped; -}; - -static void -SetRead(struct apple_xgl_saved_state *saved) -{ - GLXContext gc = __glXGetCurrentContext(); - - /* - * By default indicate that the state was not swapped, so that UnsetRead - * functions correctly. - */ - saved->swapped = false; - - /* - * If the readable drawable isn't the same as the drawable then - * the user has requested a readable drawable with glXMakeContextCurrent(). - * We emulate this behavior by switching the current drawable. - */ - if (None != gc->currentReadable - && gc->currentReadable != gc->currentDrawable) { - Display *dpy = glXGetCurrentDisplay(); - - saved->swapped = true; - - if (apple_glx_make_current_context(dpy, gc->driContext, gc->driContext, - gc->currentReadable)) { - /* An error occurred, so try to restore the old context state. */ - (void) apple_glx_make_current_context(dpy, gc->driContext, gc->driContext, - gc->currentDrawable); - saved->swapped = false; - } - } -} - -static void -UnsetRead(struct apple_xgl_saved_state *saved) -{ - if (saved->swapped) { - GLXContext gc = __glXGetCurrentContext(); - Display *dpy = glXGetCurrentDisplay(); - - if (apple_glx_make_current_context(dpy, gc->driContext, gc->driContext, - gc->currentDrawable)) { - /* - * An error occurred restoring the drawable. - * It's unclear what to do about that. - */ - } - } -} - -void -glReadPixels(GLint x, GLint y, GLsizei width, GLsizei height, - GLenum format, GLenum type, void *pixels) -{ - struct apple_xgl_saved_state saved; - - SetRead(&saved); - - __gl_api.ReadPixels(x, y, width, height, format, type, pixels); - - UnsetRead(&saved); -} - -void -glCopyPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum type) -{ - struct apple_xgl_saved_state saved; - - SetRead(&saved); - - __gl_api.CopyPixels(x, y, width, height, type); - - UnsetRead(&saved); -} - -void -glCopyColorTable(GLenum target, GLenum internalformat, GLint x, GLint y, - GLsizei width) -{ - struct apple_xgl_saved_state saved; - - SetRead(&saved); - - __gl_api.CopyColorTable(target, internalformat, x, y, width); - - UnsetRead(&saved); -} |