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Bug 950312 - Part 3: Add Layers API to see what blend modes are supported. r=roc

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This commit is contained in:
Matt Woodrow 2014-05-09 21:48:32 +12:00
parent 23232a9040
commit 898541f214
6 changed files with 41 additions and 6 deletions
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13
gfx/ipc/GfxMessageUtils.h
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@ -802,6 +802,7 @@ struct ParamTraits<mozilla::layers::TextureFactoryIdentifier>
static void Write(Message* aMsg, const paramType& aParam)
{
WriteParam(aMsg, aParam.mParentBackend);
WriteParam(aMsg, aParam.mSupportedBlendModes.serialize());
WriteParam(aMsg, aParam.mMaxTextureSize);
WriteParam(aMsg, aParam.mSupportsTextureBlitting);
WriteParam(aMsg, aParam.mSupportsPartialUploads);
@ -809,10 +810,14 @@ struct ParamTraits<mozilla::layers::TextureFactoryIdentifier>
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
{
return ReadParam(aMsg, aIter, &aResult->mParentBackend) &&
ReadParam(aMsg, aIter, &aResult->mMaxTextureSize) &&
ReadParam(aMsg, aIter, &aResult->mSupportsTextureBlitting) &&
ReadParam(aMsg, aIter, &aResult->mSupportsPartialUploads);
uint32_t supportedBlendModes = 0;
bool result = ReadParam(aMsg, aIter, &aResult->mParentBackend) &&
ReadParam(aMsg, aIter, &supportedBlendModes) &&
ReadParam(aMsg, aIter, &aResult->mMaxTextureSize) &&
ReadParam(aMsg, aIter, &aResult->mSupportsTextureBlitting) &&
ReadParam(aMsg, aIter, &aResult->mSupportsPartialUploads);
aResult->mSupportedBlendModes.deserialize(supportedBlendModes);
return result;
}
};

4
gfx/layers/CompositorTypes.h
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@ -10,6 +10,8 @@
#include <sys/types.h> // for int32_t
#include "LayersTypes.h" // for LayersBackend, etc
#include "nsXULAppAPI.h" // for GeckoProcessType, etc
#include "mozilla/gfx/Types.h"
#include "mozilla/EnumSet.h"
#include "mozilla/TypedEnum.h"
#include "mozilla/TypedEnumBits.h"
@ -192,6 +194,7 @@ struct TextureFactoryIdentifier
{
LayersBackend mParentBackend;
GeckoProcessType mParentProcessId;
EnumSet<gfx::CompositionOp> mSupportedBlendModes;
int32_t mMaxTextureSize;
bool mSupportsTextureBlitting;
bool mSupportsPartialUploads;
@ -203,6 +206,7 @@ struct TextureFactoryIdentifier
bool aSupportsPartialUploads = false)
: mParentBackend(aLayersBackend)
, mParentProcessId(aParentProcessId)
, mSupportedBlendModes(gfx::CompositionOp::OP_OVER)
, mMaxTextureSize(aMaxTextureSize)
, mSupportsTextureBlitting(aSupportsTextureBlitting)
, mSupportsPartialUploads(aSupportsPartialUploads)

11
gfx/layers/Layers.h
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@ -617,6 +617,17 @@ public:
mRegionToClear = aRegion;
}
virtual bool SupportsMixBlendModes(EnumSet<gfx::CompositionOp>& aMixBlendModes)
{
return false;
}
bool SupportsMixBlendMode(gfx::CompositionOp aMixBlendMode)
{
EnumSet<gfx::CompositionOp> modes(aMixBlendMode);
return SupportsMixBlendModes(modes);
}
protected:
nsRefPtr<Layer> mRoot;
gfx::UserData mUserData;

2
gfx/layers/basic/BasicLayers.h
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@ -144,6 +144,8 @@ public:
virtual int32_t GetMaxTextureSize() const { return INT32_MAX; }
bool CompositorMightResample() { return mCompositorMightResample; }
virtual bool SupportsMixBlendModes(EnumSet<gfx::CompositionOp>& aMixBlendModes) MOZ_OVERRIDE { return true; }
protected:
enum TransactionPhase {
PHASE_NONE, PHASE_CONSTRUCTION, PHASE_DRAWING, PHASE_FORWARD

5
gfx/layers/client/ClientLayerManager.h
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@ -167,6 +167,11 @@ public:
virtual void DidComposite();
virtual bool SupportsMixBlendModes(EnumSet<gfx::CompositionOp>& aMixBlendModes) MOZ_OVERRIDE
{
return (GetTextureFactoryIdentifier().mSupportedBlendModes & aMixBlendModes) == aMixBlendModes;
}
protected:
enum TransactionPhase {
PHASE_NONE, PHASE_CONSTRUCTION, PHASE_DRAWING, PHASE_FORWARD

12
mfbt/EnumSet.h
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@ -29,7 +29,7 @@ class EnumSet
{ }
EnumSet(T aEnum)
: mBitField(aEnum)
: mBitField(bitFor(aEnum))
{ }
EnumSet(T aEnum1, T aEnum2)
@ -162,9 +162,17 @@ class EnumSet
return count;
}
uint32_t serialize() const {
return mBitField;
}
void deserialize(uint32_t aValue) {
mBitField = aValue;
}
private:
static uint32_t bitFor(T aEnum) {
uint32_t bitNumber(aEnum);
uint32_t bitNumber = (uint32_t)aEnum;
MOZ_ASSERT(bitNumber < 32);
return 1U << bitNumber;
}