DRI2: Do not send the real front buffer of a window to the client
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
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@ -406,6 +406,7 @@ dri2GetBuffers(__DRIdrawable *driDrawable,
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__GLXDRIdrawable *private = loaderPrivate;
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DRI2BufferPtr buffers;
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int i;
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int skip = 0;
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buffers = DRI2GetBuffers(private->base.pDraw,
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width, height, attachments, count, out_count);
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@ -420,6 +421,14 @@ dri2GetBuffers(__DRIdrawable *driDrawable,
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/* This assumes the DRI2 buffer attachment tokens matches the
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* __DRIbuffer tokens. */
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for (i = 0; i < *out_count; i++) {
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/* Do not send the real front buffer of a window to the client.
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*/
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if ((private->base.pDraw->type == DRAWABLE_WINDOW)
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&& (buffers[i].attachment == DRI2BufferFrontLeft)) {
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skip++;
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continue;
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}
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private->buffers[i].attachment = buffers[i].attachment;
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private->buffers[i].name = buffers[i].name;
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private->buffers[i].pitch = buffers[i].pitch;
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@ -427,6 +436,7 @@ dri2GetBuffers(__DRIdrawable *driDrawable,
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private->buffers[i].flags = buffers[i].flags;
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}
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*out_count -= skip;
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return private->buffers;
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}
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@ -202,6 +202,7 @@ ProcDRI2GetBuffers(ClientPtr client)
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int i, status, width, height, count;
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unsigned int *attachments;
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xDRI2Buffer buffer;
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int skip;
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REQUEST_FIXED_SIZE(xDRI2GetBuffersReq, stuff->count * 4);
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if (!validDrawable(client, stuff->drawable, &pDrawable, &status))
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@ -211,15 +212,34 @@ ProcDRI2GetBuffers(ClientPtr client)
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buffers = DRI2GetBuffers(pDrawable, &width, &height,
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attachments, stuff->count, &count);
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skip = 0;
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if (pDrawable->type == DRAWABLE_WINDOW) {
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for (i = 0; i < count; i++) {
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/* Do not send the real front buffer of a window to the client.
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*/
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if (buffers[i].attachment == DRI2BufferFrontLeft) {
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skip++;
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continue;
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}
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}
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}
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rep.type = X_Reply;
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rep.length = count * sizeof(xDRI2Buffer) / 4;
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rep.length = (count - skip) * sizeof(xDRI2Buffer) / 4;
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rep.sequenceNumber = client->sequence;
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rep.width = width;
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rep.height = height;
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rep.count = count;
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rep.count = count - skip;
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WriteToClient(client, sizeof(xDRI2GetBuffersReply), &rep);
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for (i = 0; i < count; i++) {
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/* Do not send the real front buffer of a window to the client.
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*/
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if ((pDrawable->type == DRAWABLE_WINDOW)
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&& (buffers[i].attachment == DRI2BufferFrontLeft)) {
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continue;
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}
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buffer.attachment = buffers[i].attachment;
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buffer.name = buffers[i].name;
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buffer.pitch = buffers[i].pitch;
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