If a front-buffer is requested for a window, add the fake front-buffer to the list of requested buffers.
Signed-off-by: Ian Romanick <[email protected]> --- hw/xfree86/dri2/dri2.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 files changed, 40 insertions(+), 0 deletions(-) diff --git a/hw/xfree86/dri2/dri2.c b/hw/xfree86/dri2/dri2.c index 0f2e24b..5d56d9c 100644 --- a/hw/xfree86/dri2/dri2.c +++ b/hw/xfree86/dri2/dri2.c @@ -139,6 +139,42 @@ DRI2GetBuffers(DrawablePtr pDraw, int *width, int *height, DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen); DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw); DRI2BufferPtr buffers; + unsigned int temp_buf[32]; + unsigned int *temp = temp_buf; + + + /* If the drawable is a window and the front-buffer is requested, silently + * add the fake front-buffer to the list of requested attachments. The + * counting logic in the loop accounts for the case where the client + * requests both the fake and real front-buffer. + */ + if (pDraw->type == DRAWABLE_WINDOW) { + int need_fake_front = 0; + int i; + + if ((count + 1) > 32) { + temp = xalloc((count + 1) * sizeof(temp[0])); + } + + for (i = 0; i < count; i++) { + if (attachments[i] == DRI2BufferFrontLeft) { + need_fake_front++; + } + + if (attachments[i] == DRI2BufferFakeFrontLeft) { + need_fake_front--; + } + + temp[i] = attachments[i]; + } + + if (need_fake_front > 0) { + temp[i] = DRI2BufferFakeFrontLeft; + count++; + attachments = temp; + } + } + if (pPriv->buffers == NULL || pDraw->width != pPriv->width || pDraw->height != pPriv->height) @@ -151,6 +187,10 @@ DRI2GetBuffers(DrawablePtr pDraw, int *width, int *height, pPriv->height = pDraw->height; } + if (temp != temp_buf) { + xfree(temp); + } + *width = pPriv->width; *height = pPriv->height; *out_count = pPriv->bufferCount; -- 1.6.0.6 ------------------------------------------------------------------------------ This SF.net email is sponsored by: High Quality Requirements in a Collaborative Environment. Download a free trial of Rational Requirements Composer Now! http://p.sf.net/sfu/www-ibm-com _______________________________________________ Mesa3d-dev mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
