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Slate: Fix some implicit conversion type.

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#jira UE-88354
#rb vincent.gauthier

[CL 14771288 by Patrick Boutot in ue5-main branch]
This commit is contained in:
Patrick Boutot
2020-11-18 06:10:45 -04:00
parent 6180174738
commit 25c75e62c9
7 changed files with 199 additions and 30 deletions
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Engine/Source/Runtime/SlateCore/Public/Textures/TextureAtlas.h
+68 -2
View File
@@ -8,6 +8,8 @@
#define WITH_ATLAS_DEBUGGING (WITH_EDITOR || IS_PROGRAM) && !UE_BUILD_SHIPPING
class FSlateShaderResource;
/**
* Specifies how to handle texture atlas padding (when specified for the atlas).
* We only support one pixel of padding because we don't support mips or aniso filtering on atlas textures right now.
@@ -123,7 +125,14 @@ public:
* Updates the texture used for rendering if needed
*/
virtual void ConditionalUpdateTexture() = 0;
/**
* Releases rendering resources of this texture
*/
virtual void ReleaseResources() = 0;
virtual FSlateShaderResource* GetAtlasTexture() const = 0;
#if WITH_ATLAS_DEBUGGING
const FAtlasedTextureSlot* GetSlotAtPosition(FIntPoint InPosition) const;
#endif
@@ -185,7 +194,7 @@ protected:
private:
/** Returns the amount of padding needed for the current padding style */
FORCEINLINE int32 GetPaddingAmount() const
FORCEINLINE uint8 GetPaddingAmount() const
{
return (PaddingStyle == ESlateTextureAtlasPaddingStyle::NoPadding) ? 0 : 1;
}
@@ -234,6 +243,61 @@ struct FAtlasSlotInfo
FName TextureName;
};
/** A factory capable of generating a texture atlas or shader resource for textures too big to be in an atlas */
class ISlateTextureAtlasFactory
{
public:
virtual ~ISlateTextureAtlasFactory() {}
virtual TUniquePtr<FSlateTextureAtlas> CreateTextureAtlas(int32 AtlasSize, int32 AtlasStride, ESlateTextureAtlasPaddingStyle PaddingStyle, bool bUpdatesAfterInitialization) const = 0;
virtual TUniquePtr<FSlateShaderResource> CreateNonAtlasedTexture(const uint32 InWidth, const uint32 InHeight, const TArray<uint8>& InRawData) const = 0;
virtual void ReleaseTextureAtlases(const TArray<TUniquePtr<FSlateTextureAtlas>>& InTextureAtlases, const TArray<TUniquePtr<FSlateShaderResource>>& InNonAtlasedTextures, const bool bWaitForRelease) const = 0;
};
/** Base class for any atlas cache which has flushing logic to keep the number of in use pages small */
class FSlateFlushableAtlasCache
{
public:
FSlateFlushableAtlasCache();
FSlateFlushableAtlasCache(int32 InInitialMaxAtlasPagesBeforeFlushRequest, int32 InInitialMaxNonAtlasedTexturesBeforeFlushRequest);
virtual ~FSlateFlushableAtlasCache() {}
/**
* Called when this cache must be flushed
*
* @param Reason A string explaining the reason the cache was flushed (generally for debugging or logging
*/
virtual void RequestFlushCache(const FString& Reason) = 0;
/** Resets all counters to their initial state to start over flushing logic */
void ResetFlushCounters();
/** Increments counters that determine if a flush is needed. If a flush is needed RequestFlushCache will be called from here */
void UpdateFlushCounters(int32 NumGrayscale, int32 NumColor, int32 NumNonAtlased);
private:
bool UpdateInternal(int32 CurrentNum, int32& MaxNum, int32 InitialMax, int32 FrameWindowNum);
private:
int32 InitialMaxAtlasPagesBeforeFlushRequest;
int32 InitialMaxNonAtlasPagesBeforeFlushRequest;
/** Number of grayscale atlas pages we can have before we request that the cache be flushed */
int32 CurrentMaxGrayscaleAtlasPagesBeforeFlushRequest;
/** Number of color atlas pages we can have before we request that the cache be flushed */
int32 CurrentMaxColorAtlasPagesBeforeFlushRequest;
/** Number of non-atlased textures we can have before we request that the cache be flushed */
int32 CurrentMaxNonAtlasedTexturesBeforeFlushRequest;
/** The frame counter the last time the font cache was asked to be flushed */
uint64 FrameCounterLastFlushRequest;
};
/**
* Interface to allow the Slate atlas visualizer to query atlas page information for an atlas provider
*/
@@ -257,3 +321,5 @@ public:
virtual FAtlasSlotInfo GetAtlasSlotInfoAtPosition(FIntPoint InPosition, int32 AtlasIndex) const = 0;
#endif
};