Try to work around #199
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@ -868,6 +868,11 @@ impl MetalDevice {
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render_command_encoder.use_resource(&data_buffer, MTLResourceUsage::Read);
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render_command_encoder.use_resource(&data_buffer, MTLResourceUsage::Read);
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// Metal expects the data buffer to remain live. (Issue #199.)
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// FIXME(pcwalton): When do we deallocate this? What are the expected
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// lifetime semantics?
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mem::forget(data_buffer);
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if let Some(vertex_argument_buffer) = vertex_argument_buffer {
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if let Some(vertex_argument_buffer) = vertex_argument_buffer {
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let range = NSRange::new(0, vertex_argument_buffer.length());
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let range = NSRange::new(0, vertex_argument_buffer.length());
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vertex_argument_buffer.did_modify_range(range);
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vertex_argument_buffer.did_modify_range(range);
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