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rhi: gl: Avoid crash when reading back the swapchain backbuffer

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Change-Id: I9a632c06d8b9e666d99d0f135d3396d2de03f92a
Reviewed-by: Christian Strømme <christian.stromme@qt.io>
This commit is contained in:
Laszlo Agocs 2019-09-10 16:22:15 +02:00
parent 1fbe3c2316
commit 6f592ea300
1 changed files with 2 additions and 1 deletions
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3
src/gui/rhi/qrhigles2.cpp
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@ -1480,7 +1480,8 @@ void QRhiGles2::enqueueResourceUpdates(QRhiCommandBuffer *cb, QRhiResourceUpdate
cmd.cmd = QGles2CommandBuffer::Command::ReadPixels;
cmd.args.readPixels.result = u.read.result;
QGles2Texture *texD = QRHI_RES(QGles2Texture, u.read.rb.texture());
trackedImageBarrier(cbD, texD, QGles2Texture::AccessRead);
if (texD)
trackedImageBarrier(cbD, texD, QGles2Texture::AccessRead);
cmd.args.readPixels.texture = texD ? texD->texture : 0;
if (texD) {
cmd.args.readPixels.w = texD->m_pixelSize.width();