Method copyData

RenderSystems/Vulkan/src/OgreVulkanHardwareBufferCommon.cpp:283–323

        }

        void VulkanHardwareBufferCommon::copyData( VulkanHardwareBufferCommon *srcBuffer,
                                                   size_t srcOffset, size_t dstOffset, size_t length,
                                                   bool discardWholeBuffer )
        {
            if( !this->mDiscardBuffer || mBuffer.mVboFlag == VulkanVaoManager::CPU_INACCESSIBLE )
            {
                mDevice->mGraphicsQueue.getCopyEncoderV1Buffer( false );

                size_t srcOffsetStart = 0;
                size_t dstOffsetStart = 0;
                VkBuffer srcBuf = srcBuffer->getBufferName( srcOffsetStart );
                VkBuffer dstBuf = this->getBufferNameForGpuWrite( dstOffsetStart );

                VkBufferCopy region;
                region.srcOffset = srcOffset + srcOffsetStart;
                region.dstOffset = dstOffset + dstOffsetStart;
                region.size = alignToNextMultiple<size_t>( length, 4u );
                vkCmdCopyBuffer( mDevice->mGraphicsQueue.mCurrentCmdBuffer, srcBuf, dstBuf, 1u,
                                 &region );

                if( this->mDiscardBuffer )
                    mDevice->stall();
            }
            else
            {
                HardwareBuffer::LockOptions dstOption;
                if( discardWholeBuffer )
                    dstOption = HardwareBuffer::HBL_DISCARD;
                else
                    dstOption = HardwareBuffer::HBL_WRITE_ONLY;

                const void *srcData =
                    srcBuffer->lockImpl( srcOffset, length, HardwareBuffer::HBL_READ_ONLY, false );
                void *dstData = this->lockImpl( dstOffset, length, dstOption, false );

                memcpy( dstData, srcData, length );

                this->unlockImpl( dstOffset, length );
                srcBuffer->unlockImpl( srcOffset, length );
            }
        }
    }  // namespace v1
}  // namespace Ogre