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temporal effects

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Aiden
2026-05-02 19:23:03 +10:00
parent 2a0eea936d
commit 1d9bf151ce
13 changed files with 786 additions and 7 deletions
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39
apps/LoopThroughWithOpenGLCompositing/OpenGLComposite.h
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@@ -110,6 +110,7 @@ private:
// DeckLink
IDeckLinkInput* mDLInput;
IDeckLinkOutput* mDLOutput;
IDeckLinkKeyer* mDLKeyer;
std::deque<IDeckLinkMutableVideoFrame*> mDLOutputVideoFrameQueue;
PinnedMemoryAllocator* mPlayoutAllocator;
BMDTimeValue mFrameDuration;
@@ -118,6 +119,12 @@ private:
unsigned mFrameWidth;
unsigned mFrameHeight;
bool mHasNoInputSource;
std::string mDeckLinkOutputModelName;
bool mDeckLinkSupportsInternalKeying;
bool mDeckLinkSupportsExternalKeying;
bool mDeckLinkKeyerInterfaceAvailable;
bool mDeckLinkExternalKeyingActive;
std::string mDeckLinkStatusMessage;
// OpenGL data
bool mFastTransferExtensionAvailable;
@@ -152,6 +159,25 @@ private:
};
std::vector<LayerProgram> mLayerPrograms;
struct HistorySlot
{
GLuint texture = 0;
GLuint framebuffer = 0;
};
struct HistoryRing
{
std::vector<HistorySlot> slots;
std::size_t nextWriteIndex = 0;
std::size_t filledCount = 0;
unsigned effectiveLength = 0;
TemporalHistorySource historySource = TemporalHistorySource::None;
};
HistoryRing mSourceHistoryRing;
std::map<std::string, HistoryRing> mPreLayerHistoryByLayerId;
bool mTemporalHistoryNeedsReset;
bool InitOpenGLState();
bool compileLayerPrograms(int errorMessageSize, char* errorMessage);
bool compileSingleLayerProgram(const RuntimeRenderState& state, LayerProgram& layerProgram, int errorMessageSize, char* errorMessage);
@@ -164,7 +190,18 @@ private:
void renderEffect();
bool PollRuntimeChanges();
void broadcastRuntimeState();
bool updateGlobalParamsBuffer(const RuntimeRenderState& state);
bool updateGlobalParamsBuffer(const RuntimeRenderState& state, unsigned availableSourceHistoryLength, unsigned availableTemporalHistoryLength);
bool validateTemporalTextureUnitBudget(std::string& error) const;
bool ensureTemporalHistoryResources(const std::vector<RuntimeRenderState>& layerStates, std::string& error);
bool createHistoryRing(HistoryRing& ring, unsigned effectiveLength, TemporalHistorySource historySource, std::string& error);
void destroyHistoryRing(HistoryRing& ring);
void destroyTemporalHistoryResources();
void resetTemporalHistoryState();
void pushFramebufferToHistoryRing(GLuint sourceFramebuffer, HistoryRing& ring);
void bindHistorySamplers(const RuntimeRenderState& state, GLuint currentSourceTexture);
GLuint resolveHistoryTexture(const HistoryRing& ring, GLuint fallbackTexture, std::size_t framesAgo) const;
unsigned sourceHistoryAvailableCount() const;
unsigned temporalHistoryAvailableCountForLayer(const std::string& layerId) const;
};
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