DRI2: Add fake front-buffer to request list for windows
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 <ian.d.romanick@intel.com>
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@ -139,6 +139,42 @@ DRI2GetBuffers(DrawablePtr pDraw, int *width, int *height,
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DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
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DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw);
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DRI2BufferPtr buffers;
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unsigned int temp_buf[32];
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unsigned int *temp = temp_buf;
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/* If the drawable is a window and the front-buffer is requested, silently
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* add the fake front-buffer to the list of requested attachments. The
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* counting logic in the loop accounts for the case where the client
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* requests both the fake and real front-buffer.
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*/
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if (pDraw->type == DRAWABLE_WINDOW) {
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int need_fake_front = 0;
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int i;
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if ((count + 1) > 32) {
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temp = xalloc((count + 1) * sizeof(temp[0]));
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}
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for (i = 0; i < count; i++) {
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if (attachments[i] == DRI2BufferFrontLeft) {
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need_fake_front++;
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}
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if (attachments[i] == DRI2BufferFakeFrontLeft) {
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need_fake_front--;
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}
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temp[i] = attachments[i];
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}
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if (need_fake_front > 0) {
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temp[i] = DRI2BufferFakeFrontLeft;
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count++;
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attachments = temp;
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}
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}
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if (pPriv->buffers == NULL ||
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pDraw->width != pPriv->width || pDraw->height != pPriv->height)
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@ -151,6 +187,10 @@ DRI2GetBuffers(DrawablePtr pDraw, int *width, int *height,
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pPriv->height = pDraw->height;
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}
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if (temp != temp_buf) {
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xfree(temp);
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}
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*width = pPriv->width;
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*height = pPriv->height;
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*out_count = pPriv->bufferCount;
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