зеркало из https://github.com/mozilla/moz-skia.git
Altered GrDrawState to always ref textures and render target
http://codereview.appspot.com/6251049/ git-svn-id: http://skia.googlecode.com/svn/trunk@4049 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
robertphillips@google.com
Родитель
fd4be26c42
Коммит
837576bf89
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@ -857,8 +857,13 @@ public:
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}
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~GrAutoScratchTexture() {
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this->reset();
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}
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void reset() {
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if (NULL != fContext) {
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fContext->unlockTexture(fEntry);
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fEntry.reset();
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}
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}
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@ -866,10 +871,8 @@ public:
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const GrTextureDesc& desc,
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GrContext::ScratchTexMatch match =
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GrContext::kApprox_ScratchTexMatch) {
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if (NULL != fContext) {
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fContext->unlockTexture(fEntry);
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fEntry.reset();
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}
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this->reset();
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fContext = context;
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if (NULL != fContext) {
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fEntry = fContext->lockScratchTexture(desc, match);
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@ -69,6 +69,8 @@ GrContext* GrContext::Create(GrEngine engine,
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GrContext::~GrContext() {
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this->flush();
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// The gpu refs textures in its drawstate.
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fGpu->setDrawState(NULL);
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// Since the gpu can hold scratch textures, give it a chance to let go
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// of them before freeing the texture cache
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fGpu->purgeResources();
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@ -14,11 +14,10 @@
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#include "GrRefCnt.h"
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#include "GrSamplerState.h"
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#include "GrStencil.h"
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#include "GrRenderTarget.h"
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#include "SkXfermode.h"
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class GrRenderTarget;
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class GrTexture;
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class GrDrawState : public GrRefCnt {
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@ -53,18 +52,43 @@ public:
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typedef uint32_t StageMask;
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GR_STATIC_ASSERT(sizeof(StageMask)*8 >= GrDrawState::kNumStages);
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GrDrawState() {
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GrDrawState()
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: fRenderTarget(NULL) {
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for (int i = 0; i < kNumStages; ++i) {
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fTextures[i] = NULL;
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}
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this->reset();
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}
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GrDrawState(const GrDrawState& state) {
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GrDrawState(const GrDrawState& state)
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: fRenderTarget(NULL) {
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for (int i = 0; i < kNumStages; ++i) {
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fTextures[i] = NULL;
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}
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*this = state;
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}
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virtual ~GrDrawState() {
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for (int i = 0; i < kNumStages; ++i) {
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GrSafeSetNull(fTextures[i]);
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}
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GrSafeSetNull(fRenderTarget);
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}
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/**
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* Resets to the default state. Sampler states will not be modified.
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*/
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void reset() {
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for (int i = 0; i < kNumStages; ++i) {
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GrSafeSetNull(fTextures[i]);
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}
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GrSafeSetNull(fRenderTarget);
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// make sure any pad is zero for memcmp
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// all GrDrawState members should default to something valid by the
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// the memset except those initialized individually below. There should
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@ -85,14 +109,13 @@ public:
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fSrcBlend = kOne_BlendCoeff;
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fDstBlend = kZero_BlendCoeff;
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fViewMatrix.reset();
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fBehaviorBits = 0;
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// ensure values that will be memcmp'ed in == but not memset in reset()
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// are tightly packed
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GrAssert(this->memsetSize() + sizeof(fColor) + sizeof(fCoverage) +
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sizeof(fFirstCoverageStage) + sizeof(fColorFilterMode) +
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sizeof(fSrcBlend) + sizeof(fDstBlend) ==
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this->podSize());
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sizeof(fSrcBlend) + sizeof(fDstBlend) + sizeof(fTextures) +
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sizeof(fRenderTarget) == this->podSize());
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}
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///////////////////////////////////////////////////////////////////////////
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@ -174,16 +197,14 @@ public:
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void setTexture(int stage, GrTexture* texture) {
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GrAssert((unsigned)stage < kNumStages);
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if (isBehaviorEnabled(kTexturesNeedRef_BehaviorBit)) {
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// If we don't clear out the current texture before unreffing
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// it we can get into an infinite loop as the GrGLTexture's
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// onRelease method recursively calls setTexture
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GrTexture* temp = fTextures[stage];
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fTextures[stage] = NULL;
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// If we don't clear out the current texture before unreffing
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// it we can get into an infinite loop as the GrGLTexture's
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// onRelease method recursively calls setTexture
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GrTexture* temp = fTextures[stage];
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fTextures[stage] = NULL;
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SkSafeRef(texture);
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SkSafeUnref(temp);
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}
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SkSafeRef(texture);
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SkSafeUnref(temp);
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fTextures[stage] = texture;
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}
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@ -461,7 +482,18 @@ public:
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*
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* @param target The render target to set.
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*/
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void setRenderTarget(GrRenderTarget* target) { fRenderTarget = target; }
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void setRenderTarget(GrRenderTarget* target) {
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// If we don't clear out the current render target before unreffing
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// it we can get into an infinite loop as the GrGLRenderTarget's
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// onRelease method recursively calls setTexture
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GrRenderTarget* temp = fRenderTarget;
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fRenderTarget = NULL;
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SkSafeRef(target);
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SkSafeUnref(temp);
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fRenderTarget = target;
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}
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/**
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* Retrieves the currently set rendertarget.
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@ -479,16 +511,26 @@ public:
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fSavedTarget = NULL;
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this->set(ds, newTarget);
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}
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~AutoRenderTargetRestore() { this->set(NULL, NULL); }
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void set(GrDrawState* ds, GrRenderTarget* newTarget) {
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~AutoRenderTargetRestore() { this->restore(); }
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void restore() {
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if (NULL != fDrawState) {
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fDrawState->setRenderTarget(fSavedTarget);
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fDrawState = NULL;
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}
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GrSafeSetNull(fSavedTarget);
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}
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void set(GrDrawState* ds, GrRenderTarget* newTarget) {
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this->restore();
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if (NULL != ds) {
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GrAssert(NULL == fSavedTarget);
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fSavedTarget = ds->getRenderTarget();
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SkSafeRef(fSavedTarget);
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ds->setRenderTarget(newTarget);
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fDrawState = ds;
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}
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fDrawState = ds;
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}
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private:
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GrDrawState* fDrawState;
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@ -681,28 +723,6 @@ public:
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fFlagBits = ds.fFlagBits;
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}
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/**
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* Flags that do not affect rendering.
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*/
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enum GrBehaviorBits {
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/**
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* Calls to setTexture will ref/unref the texture
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*/
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kTexturesNeedRef_BehaviorBit = 0x01,
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};
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void enableBehavior(uint32_t behaviorBits) {
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fBehaviorBits |= behaviorBits;
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}
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void disableBehavior(uint32_t behaviorBits) {
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fBehaviorBits &= ~(behaviorBits);
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}
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bool isBehaviorEnabled(uint32_t behaviorBits) const {
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return 0 != (behaviorBits & fBehaviorBits);
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}
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/// @}
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///////////////////////////////////////////////////////////////////////////
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@ -748,14 +768,6 @@ public:
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return false;
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}
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// kTexturesNeedRef is an internal flag for altering the draw state's
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// behavior rather than a property that will impact drawing - ignore it
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// here
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if ((fBehaviorBits & ~kTexturesNeedRef_BehaviorBit) !=
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(s.fBehaviorBits & ~kTexturesNeedRef_BehaviorBit)) {
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return false;
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}
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for (int i = 0; i < kNumStages; i++) {
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if (fTextures[i] &&
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this->fSamplerStates[i] != s.fSamplerStates[i]) {
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@ -780,13 +792,16 @@ public:
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memcpy(this->podStart(), s.podStart(), this->podSize());
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fViewMatrix = s.fViewMatrix;
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fBehaviorBits = s.fBehaviorBits;
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for (int i = 0; i < kNumStages; i++) {
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SkSafeRef(fTextures[i]); // already copied by memcpy
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if (s.fTextures[i]) {
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this->fSamplerStates[i] = s.fSamplerStates[i];
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}
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}
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SkSafeRef(fRenderTarget); // already copied by memcpy
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if (kColorMatrix_StateBit & s.fFlagBits) {
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memcpy(this->fColorMatrix, s.fColorMatrix, sizeof(fColorMatrix));
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}
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@ -820,15 +835,13 @@ private:
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GrColor fBlendConstant;
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GrColor fPodStartMarker;
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};
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GrTexture* fTextures[kNumStages];
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GrColor fColorFilterColor;
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uint32_t fFlagBits;
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DrawFace fDrawFace;
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VertexEdgeType fVertexEdgeType;
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GrStencilSettings fStencilSettings;
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union {
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GrRenderTarget* fRenderTarget;
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GrRenderTarget* fMemsetEndMarker;
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VertexEdgeType fVertexEdgeType;
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VertexEdgeType fMemsetEndMarker;
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};
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// @}
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@ -839,13 +852,14 @@ private:
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int fFirstCoverageStage;
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SkXfermode::Mode fColorFilterMode;
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GrBlendCoeff fSrcBlend;
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GrBlendCoeff fDstBlend;
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GrTexture* fTextures[kNumStages];
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union {
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GrBlendCoeff fDstBlend;
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GrBlendCoeff fPodEndMarker;
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GrRenderTarget* fRenderTarget;
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GrRenderTarget* fPodEndMarker;
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};
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// @}
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uint32_t fBehaviorBits;
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GrMatrix fViewMatrix;
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// This field must be last; it will not be copied or compared
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@ -460,17 +460,7 @@ void GrInOrderDrawBuffer::reset() {
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GrAssert(1 == fGeoPoolStateStack.count());
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this->resetVertexSource();
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this->resetIndexSource();
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uint32_t numStates = fStates.count();
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for (uint32_t i = 0; i < numStates; ++i) {
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for (int s = 0; s < GrDrawState::kNumStages; ++s) {
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GrSafeUnref(fStates[i].getTexture(s));
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}
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GrSafeUnref(fStates[i].getRenderTarget());
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// GrInOrderDrawBuffer is no longer managing the refs/unrefs
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// for the stored GrDrawStates
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fStates[i].disableBehavior(GrDrawState::kTexturesNeedRef_BehaviorBit);
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}
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int numDraws = fDraws.count();
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for (int d = 0; d < numDraws; ++d) {
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// we always have a VB, but not always an IB
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@ -780,16 +770,7 @@ bool GrInOrderDrawBuffer::needsNewState() const {
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}
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void GrInOrderDrawBuffer::pushState() {
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const GrDrawState& drawState = this->getDrawState();
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for (int s = 0; s < GrDrawState::kNumStages; ++s) {
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GrSafeRef(drawState.getTexture(s));
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}
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GrSafeRef(drawState.getRenderTarget());
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fStates.push_back(this->getDrawState());
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// Any textures that are added to the stored state need to be
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// reffed so the unref in reset doesn't inappropriately free them
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fStates.back().enableBehavior(GrDrawState::kTexturesNeedRef_BehaviorBit);
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}
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bool GrInOrderDrawBuffer::needsNewClip() const {
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@ -258,6 +258,10 @@ SkGpuDevice::~SkGpuDevice() {
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delete fDrawProcs;
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}
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// The SkGpuDevice gives the context the render target (e.g., in gainFocus)
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// This call gives the context a chance to relinquish it
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fContext->setRenderTarget(NULL);
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SkSafeUnref(fTexture);
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SkSafeUnref(fRenderTarget);
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if (fCache.texture()) {
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