Files
video-shader-toys/apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeSnapshotProvider.h
2026-05-10 23:53:27 +10:00

59 lines
2.0 KiB
C++

#pragma once
#include "RuntimeHost.h"
#include <cstdint>
#include <string>
#include <vector>
struct RuntimeSnapshotVersions
{
uint64_t renderStateVersion = 0;
uint64_t parameterStateVersion = 0;
};
struct RuntimeRenderFrameContext
{
double timeSeconds = 0.0;
double utcTimeSeconds = 0.0;
double utcOffsetSeconds = 0.0;
double startupRandom = 0.0;
double frameCount = 0.0;
};
struct RuntimeRenderStateSnapshot
{
RuntimeSnapshotVersions versions;
unsigned outputWidth = 0;
unsigned outputHeight = 0;
std::vector<RuntimeRenderState> states;
};
class RuntimeSnapshotProvider
{
public:
explicit RuntimeSnapshotProvider(RuntimeHost& runtimeHost);
bool BuildLayerPassFragmentShaderSources(const std::string& layerId, std::vector<ShaderPassBuildSource>& passSources, std::string& error) const;
unsigned GetMaxTemporalHistoryFrames() const;
RuntimeSnapshotVersions GetVersions() const;
RuntimeRenderFrameContext GetFrameContext() const;
void AdvanceFrame();
bool TryAdvanceFrame();
RuntimeRenderStateSnapshot GetRenderStateSnapshot(unsigned outputWidth, unsigned outputHeight) const;
bool TryGetRenderStateSnapshot(unsigned outputWidth, unsigned outputHeight, RuntimeRenderStateSnapshot& snapshot) const;
bool TryRefreshSnapshotParameters(RuntimeRenderStateSnapshot& snapshot) const;
void ApplyFrameContext(std::vector<RuntimeRenderState>& states, const RuntimeRenderFrameContext& frameContext) const;
void ApplyFrameContext(RuntimeRenderStateSnapshot& snapshot, const RuntimeRenderFrameContext& frameContext) const;
std::vector<RuntimeRenderState> GetLayerRenderStates(unsigned outputWidth, unsigned outputHeight) const;
bool TryGetLayerRenderStates(unsigned outputWidth, unsigned outputHeight, std::vector<RuntimeRenderState>& states) const;
bool TryRefreshCachedLayerStates(std::vector<RuntimeRenderState>& states) const;
void RefreshDynamicRenderStateFields(std::vector<RuntimeRenderState>& states) const;
uint64_t GetRenderStateVersion() const;
uint64_t GetParameterStateVersion() const;
private:
RuntimeHost& mRuntimeHost;
};