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Add a way to get a readonly span of Buffer contents

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Avoids the need redundantly copy data when it is being directly processed on the CPU (e.g. quad coversion)
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Billy Laws
2022-04-30 15:21:55 +01:00
parent 4c71ef5c31
commit 8d7dbe2c4e
2 changed files with 81 additions and 47 deletions
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25
app/src/main/cpp/skyline/gpu/buffer.h
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@ -198,6 +198,14 @@ namespace skyline::gpu {
*/
void SynchronizeGuestWithCycle(const std::shared_ptr<FenceCycle> &cycle);
/**
* @brief Synchronizes the guest buffer with the host buffer immediately, flushing GPU work if necessary
* @note The buffer **must** be locked prior to calling this
* @param pCycle The FenceCycle associated with the current workload, utilised for waiting and flushing semantics
* @param flushHostCallback Callback to flush and execute all pending GPU work to allow for synchronisation of GPU dirty buffers
*/
void SynchronizeGuestImmediate(const std::shared_ptr<FenceCycle> &pCycle, const std::function<void()> &flushHostCallback);
/**
* @brief Reads data at the specified offset in the buffer
* @param pCycle The FenceCycle associated with the current workload, utilised for waiting and flushing semantics
@ -234,6 +242,15 @@ namespace skyline::gpu {
* @note This **must** be called after any modifications of the backing buffer data
*/
void InvalidateMegaBuffer();
/**
* @param pCycle The FenceCycle associated with the current workload, utilised for waiting and flushing semantics
* @param flushHostCallback Callback to flush and execute all pending GPU work to allow for synchronisation of GPU dirty buffers
* @return A span of the backing buffer contents
* @note The returned span **must** not be written to
* @note The buffer **must** be kept locked until the span is no longer in use
*/
span<u8> GetReadOnlyBackingSpan(const std::shared_ptr<FenceCycle> &pCycle, const std::function<void()> &flushHostCallback);
};
/**
@ -317,5 +334,13 @@ namespace skyline::gpu {
* @note See Buffer::AcquireMegaBuffer
*/
vk::DeviceSize AcquireMegaBuffer() const;
/**
* @return A span of the backing buffer contents
* @note The returned span **must** not be written to
* @note The view **must** be kept locked until the span is no longer in use
* @note See Buffer::GetReadOnlyBackingSpan
*/
span<u8> GetReadOnlyBackingSpan(const std::shared_ptr<FenceCycle> &pCycle, const std::function<void()> &flushHostCallback);
};
}