Make GrTextContext no longer store a GrDrawContext

src/gpu/GrAtlasTextContext.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "GrAtlasTextContext.h"
 
 #include "GrBatchFontCache.h"
 #include "GrBatchFlushState.h"
@@ skipping 78 matching lines @@
 
 static inline GrColor skcolor_to_grcolor_nopremultiply(SkColor c) {
     unsigned r = SkColorGetR(c);
     unsigned g = SkColorGetG(c);
     unsigned b = SkColorGetB(c);
     return GrColorPackRGBA(r, g, b, 0xff);
 }
 
 };
 
-GrAtlasTextContext::GrAtlasTextContext(GrContext* context,
-                                       GrDrawContext* drawContext,
-                                       const SkSurfaceProps& surfaceProps)
-    : INHERITED(context, drawContext, surfaceProps), fDistanceAdjustTable(new DistanceAdjustTable) {
+GrAtlasTextContext::GrAtlasTextContext(GrContext* context, const SkSurfaceProps& surfaceProps)
+    : INHERITED(context, surfaceProps)
+    , fDistanceAdjustTable(new DistanceAdjustTable) {
     // We overallocate vertices in our textblobs based on the assumption that A8 has the greatest
     // vertexStride
     static_assert(kGrayTextVASize >= kColorTextVASize && kGrayTextVASize >= kLCDTextVASize,
                   "vertex_attribute_changed");
     fCurrStrike = nullptr;
     fCache = context->getTextBlobCache();
 }
 
 void GrAtlasTextContext::DistanceAdjustTable::buildDistanceAdjustTable() {
 
@@ skipping 71 matching lines @@
                 float d = 2.0f*kDistanceFieldAAFactor*t - kDistanceFieldAAFactor;
 
                 fTable[row] = d;
                 break;
             }
         }
     }
 }
 
 GrAtlasTextContext* GrAtlasTextContext::Create(GrContext* context,
-                                               GrDrawContext* drawContext,
                                                const SkSurfaceProps& surfaceProps) {
-    return new GrAtlasTextContext(context, drawContext, surfaceProps);
+    return new GrAtlasTextContext(context, surfaceProps);
 }
 
 bool GrAtlasTextContext::canDraw(const GrRenderTarget*,
                                  const GrClip&,
                                  const GrPaint&,
                                  const SkPaint& skPaint,
                                  const SkMatrix& viewMatrix) {
     return this->canDrawAsDistanceFields(skPaint, viewMatrix) ||
            !SkDraw::ShouldDrawTextAsPaths(skPaint, viewMatrix);
 }
@@ skipping 127 matching lines @@
 
 inline SkGlyphCache* GrAtlasTextContext::setupCache(GrAtlasTextBlob::Run* run,
                                                     const SkPaint& skPaint,
                                                     const SkMatrix* viewMatrix,
                                                     bool noGamma) {
     skPaint.getScalerContextDescriptor(&run->fDescriptor, fSurfaceProps, viewMatrix, noGamma);
     run->fTypeface.reset(SkSafeRef(skPaint.getTypeface()));
     return SkGlyphCache::DetachCache(run->fTypeface, run->fDescriptor.getDesc());
 }
 
-void GrAtlasTextContext::drawTextBlob(GrRenderTarget* rt,
+void GrAtlasTextContext::drawTextBlob(GrDrawContext* dc, GrRenderTarget* rt,
                                       const GrClip& clip, const SkPaint& skPaint,
                                       const SkMatrix& viewMatrix, const SkTextBlob* blob,
                                       SkScalar x, SkScalar y,
                                       SkDrawFilter* drawFilter, const SkIRect& clipBounds) {
     // If we have been abandoned, then don't draw
     if (fContext->abandoned()) {
         return;
     }
 
     SkAutoTUnref<GrAtlasTextBlob> cacheBlob;
@@ skipping 77 matching lines @@
         if (canCache) {
             cacheBlob.reset(SkRef(fCache->createCachedBlob(blob, key, blurRec, skPaint,
                                                            kGrayTextVASize)));
         } else {
             cacheBlob.reset(fCache->createBlob(blob, kGrayTextVASize));
         }
         this->regenerateTextBlob(cacheBlob, skPaint, grPaint.getColor(), viewMatrix,
                                  blob, x, y, drawFilter, clipRect, rt, clip);
     }
 
-    this->flush(blob, cacheBlob, rt, skPaint, grPaint, drawFilter,
+    this->flush(blob, cacheBlob, dc, rt, skPaint, grPaint, drawFilter,
                 clip, viewMatrix, clipBounds, x, y, transX, transY);
 }
 
 inline bool GrAtlasTextContext::canDrawAsDistanceFields(const SkPaint& skPaint,
                                                         const SkMatrix& viewMatrix) {
     // TODO: support perspective (need getMaxScale replacement)
     if (viewMatrix.hasPerspective()) {
         return false;
     }
 
@@ skipping 329 matching lines @@
         blob = fCache->createBlob(glyphCount, 1, kGrayTextVASize);
         blob->fViewMatrix = viewMatrix;
         SkGlyphCache* cache = this->setupCache(&blob->fRuns[0], skPaint, &viewMatrix, false);
         this->internalDrawBMPPosText(blob, 0, cache, skPaint, paint.getColor(), viewMatrix, text,
                                      byteLength, pos, scalarsPerPosition, offset, clipRect);
         SkGlyphCache::AttachCache(cache);
     }
     return blob;
 }
 
-void GrAtlasTextContext::onDrawText(GrRenderTarget* rt,
+void GrAtlasTextContext::onDrawText(GrDrawContext* dc, GrRenderTarget* rt,
                                     const GrClip& clip, 
                                     const GrPaint& paint, const SkPaint& skPaint,
                                     const SkMatrix& viewMatrix,
                                     const char text[], size_t byteLength,
                                     SkScalar x, SkScalar y, const SkIRect& regionClipBounds) {
     SkAutoTUnref<GrAtlasTextBlob> blob(
         this->createDrawTextBlob(rt, clip, paint, skPaint, viewMatrix,
                                  text, byteLength, x, y, regionClipBounds));
-    this->flush(blob, rt, skPaint, paint, clip, regionClipBounds);
+    this->flush(blob, dc, rt, skPaint, paint, clip, regionClipBounds);
 }
 
-void GrAtlasTextContext::onDrawPosText(GrRenderTarget* rt,
+void GrAtlasTextContext::onDrawPosText(GrDrawContext* dc, GrRenderTarget* rt,
                                        const GrClip& clip,
                                        const GrPaint& paint, const SkPaint& skPaint,
                                        const SkMatrix& viewMatrix,
                                        const char text[], size_t byteLength,
                                        const SkScalar pos[], int scalarsPerPosition,
                                        const SkPoint& offset, const SkIRect& regionClipBounds) {
     SkAutoTUnref<GrAtlasTextBlob> blob(
         this->createDrawPosTextBlob(rt, clip, paint, skPaint, viewMatrix,
                                     text, byteLength,
                                     pos, scalarsPerPosition,
                                     offset, regionClipBounds));
 
-    this->flush(blob, rt, skPaint, paint, clip, regionClipBounds);
+    this->flush(blob, dc, rt, skPaint, paint, clip, regionClipBounds);
 }
 
 void GrAtlasTextContext::internalDrawBMPText(GrAtlasTextBlob* blob, int runIndex,
                                              SkGlyphCache* cache, const SkPaint& skPaint,
                                              GrColor color,
                                              const SkMatrix& viewMatrix,
                                              const char text[], size_t byteLength,
                                              SkScalar x, SkScalar y, const SkIRect& clipRect) {
     SkASSERT(byteLength == 0 || text != nullptr);
 
@@ skipping 644 matching lines @@
         }
         batch->fBatch.fNumGlyphs = glyphCount;
         batch->fGeoCount = 1;
         batch->fFilteredColor = 0;
         batch->fFontCache = fontCache;
         batch->fUseBGR = false;
         return batch;
     }
 
     static TextBatch* CreateDistanceField(int glyphCount, GrBatchFontCache* fontCache,
-                                          DistanceAdjustTable* distanceAdjustTable,
+                                          const DistanceAdjustTable* distanceAdjustTable,
                                           SkColor filteredColor, bool isLCD,
                                           bool useBGR) {
         TextBatch* batch = new TextBatch;
         batch->initClassID<TextBatch>();
         batch->fFontCache = fontCache;
         batch->fMaskType = isLCD ? kLCDDistanceField_MaskType : kGrayscaleDistanceField_MaskType;
         batch->fDistanceAdjustTable.reset(SkRef(distanceAdjustTable));
         batch->fFilteredColor = filteredColor;
         batch->fUseBGR = useBGR;
         batch->fBatch.fNumGlyphs = glyphCount;
@@ skipping 554 matching lines @@
     } fMaskType;
     bool fUseBGR; // fold this into the enum?
 
     GrBatchFontCache* fFontCache;
 
     // Distance field properties
     SkAutoTUnref<const DistanceAdjustTable> fDistanceAdjustTable;
     SkColor fFilteredColor;
 };
 
-void GrAtlasTextContext::flushRunAsPaths(GrRenderTarget* rt, const SkTextBlob::RunIterator& it, 
+void GrAtlasTextContext::flushRunAsPaths(GrDrawContext* dc, GrRenderTarget* rt,
+                                         const SkTextBlob::RunIterator& it, 
                                          const GrClip& clip, const SkPaint& skPaint,
                                          SkDrawFilter* drawFilter, const SkMatrix& viewMatrix,
                                          const SkIRect& clipBounds, SkScalar x, SkScalar y) {
     SkPaint runPaint = skPaint;
 
     size_t textLen = it.glyphCount() * sizeof(uint16_t);
     const SkPoint& offset = it.offset();
 
     it.applyFontToPaint(&runPaint);
 
     if (drawFilter && !drawFilter->filter(&runPaint, SkDrawFilter::kText_Type)) {
         return;
     }
 
     runPaint.setFlags(FilterTextFlags(fSurfaceProps, runPaint));
 
     switch (it.positioning()) {
         case SkTextBlob::kDefault_Positioning:
-            this->drawTextAsPath(rt, clip, runPaint, viewMatrix,
+            this->drawTextAsPath(dc, rt, clip, runPaint, viewMatrix,
                                  (const char *)it.glyphs(),
                                  textLen, x + offset.x(), y + offset.y(), clipBounds);
             break;
         case SkTextBlob::kHorizontal_Positioning:
-            this->drawPosTextAsPath(rt, clip, runPaint, viewMatrix,
+            this->drawPosTextAsPath(dc, rt, clip, runPaint, viewMatrix,
                                     (const char*)it.glyphs(),
                                     textLen, it.pos(), 1, SkPoint::Make(x, y + offset.y()),
                                     clipBounds);
             break;
         case SkTextBlob::kFull_Positioning:
-            this->drawPosTextAsPath(rt, clip, runPaint, viewMatrix,
+            this->drawPosTextAsPath(dc, rt, clip, runPaint, viewMatrix,
                                     (const char*)it.glyphs(),
                                     textLen, it.pos(), 2, SkPoint::Make(x, y), clipBounds);
             break;
     }
 }
 
 inline GrDrawBatch*
 GrAtlasTextContext::createBatch(GrAtlasTextBlob* cacheBlob, const PerSubRunInfo& info,
                                 int glyphCount, int run, int subRun,
                                 GrColor color, SkScalar transX, SkScalar transY,
@@ skipping 28 matching lines @@
     geometry.fRun = run;
     geometry.fSubRun = subRun;
     geometry.fColor = subRunColor;
     geometry.fTransX = transX;
     geometry.fTransY = transY;
     batch->init();
 
     return batch;
 }
 
-inline void GrAtlasTextContext::flushRun(GrPipelineBuilder* pipelineBuilder,
+inline void GrAtlasTextContext::flushRun(GrDrawContext* dc, GrPipelineBuilder* pipelineBuilder,
                                          GrAtlasTextBlob* cacheBlob, int run, GrColor color,
                                          SkScalar transX, SkScalar transY,
                                          const SkPaint& skPaint) {
     for (int subRun = 0; subRun < cacheBlob->fRuns[run].fSubRunInfo.count(); subRun++) {
         const PerSubRunInfo& info = cacheBlob->fRuns[run].fSubRunInfo[subRun];
         int glyphCount = info.fGlyphEndIndex - info.fGlyphStartIndex;
         if (0 == glyphCount) {
             continue;
         }
 
         SkAutoTUnref<GrDrawBatch> batch(this->createBatch(cacheBlob, info, glyphCount, run,
                                                           subRun, color, transX, transY,
                                                           skPaint));
-        fDrawContext->drawBatch(pipelineBuilder, batch);
+        dc->drawBatch(pipelineBuilder, batch);
     }
 }
 
-inline void GrAtlasTextContext::flushBigGlyphs(GrAtlasTextBlob* cacheBlob, GrRenderTarget* rt,
+inline void GrAtlasTextContext::flushBigGlyphs(GrAtlasTextBlob* cacheBlob, 
+                                               GrDrawContext* dc, GrRenderTarget* rt,
                                                const GrClip& clip, const SkPaint& skPaint,
                                                SkScalar transX, SkScalar transY,
                                                const SkIRect& clipBounds) {
     if (!cacheBlob->fBigGlyphs.count()) {
         return;
     }
 
     for (int i = 0; i < cacheBlob->fBigGlyphs.count(); i++) {
         GrAtlasTextBlob::BigGlyph& bigGlyph = cacheBlob->fBigGlyphs[i];
         bigGlyph.fVx += transX;
         bigGlyph.fVy += transY;
         SkMatrix ctm;
         ctm.setScale(bigGlyph.fScale, bigGlyph.fScale);
         ctm.postTranslate(bigGlyph.fVx, bigGlyph.fVy);
         if (bigGlyph.fApplyVM) {
             ctm.postConcat(cacheBlob->fViewMatrix);
         }
 
-        GrBlurUtils::drawPathWithMaskFilter(fContext, fDrawContext, rt, clip, bigGlyph.fPath,
+        GrBlurUtils::drawPathWithMaskFilter(fContext, dc, rt, clip, bigGlyph.fPath,
                                             skPaint, ctm, nullptr, clipBounds, false);
     }
 }
 
 void GrAtlasTextContext::flush(const SkTextBlob* blob,
                                GrAtlasTextBlob* cacheBlob,
+                               GrDrawContext* dc, 
                                GrRenderTarget* rt,
                                const SkPaint& skPaint,
                                const GrPaint& grPaint,
                                SkDrawFilter* drawFilter,
                                const GrClip& clip,
                                const SkMatrix& viewMatrix,
                                const SkIRect& clipBounds,
                                SkScalar x, SkScalar y,
                                SkScalar transX, SkScalar transY) {
     // We loop through the runs of the blob, flushing each.  If any run is too large, then we flush
     // it as paths
     GrPipelineBuilder pipelineBuilder(grPaint, rt, clip);
 
     GrColor color = grPaint.getColor();
 
     SkTextBlob::RunIterator it(blob);
     for (int run = 0; !it.done(); it.next(), run++) {
         if (cacheBlob->fRuns[run].fDrawAsPaths) {
-            this->flushRunAsPaths(rt, it, clip, skPaint,
+            this->flushRunAsPaths(dc, rt, it, clip, skPaint,
                                   drawFilter, viewMatrix, clipBounds, x, y);
             continue;
         }
         cacheBlob->fRuns[run].fVertexBounds.offset(transX, transY);
-        this->flushRun(&pipelineBuilder, cacheBlob, run, color,
+        this->flushRun(dc, &pipelineBuilder, cacheBlob, run, color,
                        transX, transY, skPaint);
     }
 
     // Now flush big glyphs
-    this->flushBigGlyphs(cacheBlob, rt, clip, skPaint, transX, transY, clipBounds);
+    this->flushBigGlyphs(cacheBlob, dc, rt, clip, skPaint, transX, transY, clipBounds);
 }
 
 void GrAtlasTextContext::flush(GrAtlasTextBlob* cacheBlob,
+                               GrDrawContext* dc,
                                GrRenderTarget* rt,
                                const SkPaint& skPaint,
                                const GrPaint& grPaint,
                                const GrClip& clip,
                                const SkIRect& clipBounds) {
     GrPipelineBuilder pipelineBuilder(grPaint, rt, clip);
 
     GrColor color = grPaint.getColor();
     for (int run = 0; run < cacheBlob->fRunCount; run++) {
-        this->flushRun(&pipelineBuilder, cacheBlob, run, color, 0, 0, skPaint);
+        this->flushRun(dc, &pipelineBuilder, cacheBlob, run, color, 0, 0, skPaint);
     }
 
     // Now flush big glyphs
-    this->flushBigGlyphs(cacheBlob, rt, clip, skPaint, 0, 0, clipBounds);
+    this->flushBigGlyphs(cacheBlob, dc, rt, clip, skPaint, 0, 0, clipBounds);
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 #ifdef GR_TEST_UTILS
 
 DRAW_BATCH_TEST_DEFINE(TextBlobBatch) {
     static uint32_t gContextID = SK_InvalidGenID;
     static GrAtlasTextContext* gTextContext = nullptr;
     static SkSurfaceProps gSurfaceProps(SkSurfaceProps::kLegacyFontHost_InitType);
 
     if (context->uniqueID() != gContextID) {
         gContextID = context->uniqueID();
         delete gTextContext;
 
         // We don't yet test the fall back to paths in the GrTextContext base class.  This is mostly
         // because we don't really want to have a gpu device here.
         // We enable distance fields by twiddling a knob on the paint
-        GrDrawContext* drawContext = context->drawContext(&gSurfaceProps);
-
-        gTextContext = GrAtlasTextContext::Create(context, drawContext, gSurfaceProps);
+        gTextContext = GrAtlasTextContext::Create(context, gSurfaceProps);
     }
 
     // create dummy render target
     GrSurfaceDesc desc;
     desc.fFlags = kRenderTarget_GrSurfaceFlag;
     desc.fWidth = 1024;
     desc.fHeight = 1024;
     desc.fConfig = kRGBA_8888_GrPixelConfig;
     desc.fSampleCnt = 0;
     SkAutoTUnref<GrTexture> texture(context->textureProvider()->createTexture(desc, true, nullptr, 0));
@@ skipping 28 matching lines @@
             gTextContext->createDrawTextBlob(rt, clip, grPaint, skPaint, viewMatrix, text,
                                              static_cast<size_t>(textLen), 0, 0, noClip));
 
     SkScalar transX = static_cast<SkScalar>(random->nextU());
     SkScalar transY = static_cast<SkScalar>(random->nextU());
     const GrAtlasTextBlob::Run::SubRunInfo& info = blob->fRuns[0].fSubRunInfo[0];
     return gTextContext->createBatch(blob, info, textLen, 0, 0, color, transX, transY, skPaint);
 }
 
 #endif