Change signature of GrAtlasGlyphCache::getProxies

Split out of https://skia-review.googlesource.com/c/skia/+/108001 (Fission GrAtlasGlyphCache in two)

TBR=bsalomon@google.com
Change-Id: I573730fdeddf178915eb5f5b8cf59a3ab29e0654
Reviewed-on: https://skia-review.googlesource.com/108441
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

3 files changed, 20 insertions, 19 deletions

diff --git a/src/gpu/ops/GrAtlasTextOp.cpp b/src/gpu/ops/GrAtlasTextOp.cpp
index b5f4d45152..8a4c50c0d6 100644
--- a/src/gpu/ops/GrAtlasTextOp.cpp
+++ b/src/gpu/ops/GrAtlasTextOp.cpp
@@ -218,8 +218,8 @@ void GrAtlasTextOp::onPrepareDraws(Target* target) {
 
     GrMaskFormat maskFormat = this->maskFormat();
 
-    uint32_t atlasPageCount = fFontCache->getAtlasPageCount(maskFormat);
-    const sk_sp<GrTextureProxy>* proxies = fFontCache->getProxies(maskFormat);
+    unsigned int atlasPageCount;
+    const sk_sp<GrTextureProxy>* proxies = fFontCache->getProxies(maskFormat, &atlasPageCount);
     if (!atlasPageCount || !proxies[0]) {
         SkDebugf("Could not allocate backing texture for atlas\n");
         return;
@@ -305,20 +305,23 @@ void GrAtlasTextOp::onPrepareDraws(Target* target) {
 void GrAtlasTextOp::flush(GrMeshDrawOp::Target* target, FlushInfo* flushInfo) const {
     GrGeometryProcessor* gp = flushInfo->fGeometryProcessor.get();
     GrMaskFormat maskFormat = this->maskFormat();
-    if (gp->numTextureSamplers() != (int)fFontCache->getAtlasPageCount(maskFormat)) {
+
+    unsigned int numProxies;
+    const sk_sp<GrTextureProxy>* proxies = fFontCache->getProxies(maskFormat, &numProxies);
+    if (gp->numTextureSamplers() != (int) numProxies) {
         // During preparation the number of atlas pages has increased.
         // Update the proxies used in the GP to match.
         if (this->usesDistanceFields()) {
             if (this->isLCD()) {
                 reinterpret_cast<GrDistanceFieldLCDTextGeoProc*>(gp)->addNewProxies(
-                    fFontCache->getProxies(maskFormat), GrSamplerState::ClampBilerp());
+                    proxies, GrSamplerState::ClampBilerp());
             } else {
                 reinterpret_cast<GrDistanceFieldA8TextGeoProc*>(gp)->addNewProxies(
-                    fFontCache->getProxies(maskFormat), GrSamplerState::ClampBilerp());
+                    proxies, GrSamplerState::ClampBilerp());
             }
         } else {
             reinterpret_cast<GrBitmapTextGeoProc*>(gp)->addNewProxies(
-                fFontCache->getProxies(maskFormat), GrSamplerState::ClampNearest());
+                proxies, GrSamplerState::ClampNearest());
         }
     }
 
@@ -409,7 +412,8 @@ bool GrAtlasTextOp::onCombineIfPossible(GrOp* t, const GrCaps& caps) {
 // TODO trying to figure out why lcd is so whack
 // (see comments in GrAtlasTextContext::ComputeCanonicalColor)
 sk_sp<GrGeometryProcessor> GrAtlasTextOp::setupDfProcessor() const {
-    const sk_sp<GrTextureProxy>* p = fFontCache->getProxies(this->maskFormat());
+    unsigned int numProxies;
+    const sk_sp<GrTextureProxy>* p = fFontCache->getProxies(this->maskFormat(), &numProxies);
     bool isLCD = this->isLCD();
 
     SkMatrix localMatrix = SkMatrix::I();
diff --git a/src/gpu/ops/GrAtlasTextOp.h b/src/gpu/ops/GrAtlasTextOp.h
index 841e2a696c..de6f176d15 100644
--- a/src/gpu/ops/GrAtlasTextOp.h
+++ b/src/gpu/ops/GrAtlasTextOp.h
@@ -95,8 +95,10 @@ public:
     void visitProxies(const VisitProxyFunc& func) const override {
         fProcessors.visitProxies(func);
 
-        const sk_sp<GrTextureProxy>* proxies = fFontCache->getProxies(this->maskFormat());
-        for (int i = 0; i < kMaxTextures; ++i) {
+        unsigned int numProxies;
+        const sk_sp<GrTextureProxy>* proxies = fFontCache->getProxies(this->maskFormat(),
+                                                                      &numProxies);
+        for (unsigned int i = 0; i < numProxies; ++i) {
             if (proxies[i]) {
                 func(proxies[i].get());
             }
@@ -183,8 +185,6 @@ private:
 
     bool onCombineIfPossible(GrOp* t, const GrCaps& caps) override;
 
-    static constexpr auto kMaxTextures = 4;
-
     sk_sp<GrGeometryProcessor> setupDfProcessor() const;
 
     SkAutoSTMalloc<kMinGeometryAllocated, Geometry> fGeoData;
diff --git a/src/gpu/text/GrAtlasGlyphCache.h b/src/gpu/text/GrAtlasGlyphCache.h
index 6c5ce767db..aa337c43f5 100644
--- a/src/gpu/text/GrAtlasGlyphCache.h
+++ b/src/gpu/text/GrAtlasGlyphCache.h
@@ -130,20 +130,17 @@ public:
     // if getProxies returns nullptr, the client must not try to use other functions on the
     // GrAtlasGlyphCache which use the atlas.  This function *must* be called first, before other
     // functions which use the atlas.
-    const sk_sp<GrTextureProxy>* getProxies(GrMaskFormat format) {
+    const sk_sp<GrTextureProxy>* getProxies(GrMaskFormat format, unsigned int* numProxies) {
+        SkASSERT(numProxies);
+
         if (this->initAtlas(format)) {
+            *numProxies = this->getAtlas(format)->pageCount();
             return this->getAtlas(format)->getProxies();
         }
+        *numProxies = 0;
         return nullptr;
     }
 
-    uint32_t getAtlasPageCount(GrMaskFormat format) {
-        if (this->initAtlas(format)) {
-            return this->getAtlas(format)->pageCount();
-        }
-        return 0;
-    }
-
     SkScalar getGlyphSizeLimit() const { return fGlyphSizeLimit; }
 
     bool hasGlyph(GrGlyph* glyph) {