rhi: d3d: Fix resource binding mismatch with multiple passes

The resetShaderResources() done when starting a render or compute pass
purges all vertex, index, SRV, and UAV bindings. This will be optimized
at a later point, but until then the command buffer's state should be
updated accordingly, otherwise certain use cases end up with incorrect
rendering results due to not binding vertex/index/shader resources
as appropriate.

This fixes the shadowmap example on d3d.

Change-Id: I4d07929b8664b64bc608c6c8df474b0ee7c2ddbb
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/gui/rhi/qrhid3d11_p_p.h b/src/gui/rhi/qrhid3d11_p_p.h
index 688f79b3b7..34c9ff70f8 100644
--- a/src/gui/rhi/qrhid3d11_p_p.h
+++ b/src/gui/rhi/qrhid3d11_p_p.h
@@ -482,6 +482,9 @@ struct QD3D11CommandBuffer : public QRhiCommandBuffer
         currentGraphicsPipeline = nullptr;
         currentComputePipeline = nullptr;
         currentPipelineGeneration = 0;
+        resetCachedShaderResourceState();
+    }
+    void resetCachedShaderResourceState() {
         currentGraphicsSrb = nullptr;
         currentComputeSrb = nullptr;
         currentSrbGeneration = 0;