Add desired width & height to drawContext (as opposed to using the width & height of the RT)

src/gpu/GrContext.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrContext.h"
 #include "GrContextOptions.h"
 #include "GrDrawingManager.h"
@@ skipping 339 matching lines @@
                 buffer = tmpPixels.get();
                 applyPremulToSrc = false;
             }
             if (!fGpu->writePixels(tempTexture, 0, 0, width, height,
                                    tempDrawInfo.fWriteConfig, buffer,
                                    rowBytes)) {
                 return false;
             }
             SkMatrix matrix;
             matrix.setTranslate(SkIntToScalar(left), SkIntToScalar(top));
-            sk_sp<GrDrawContext> drawContext(this->drawContext(sk_ref_sp(renderTarget)));
+            sk_sp<GrDrawContext> drawContext(this->drawContext(surface->width(), surface->height(),
+                                                               sk_ref_sp(renderTarget)));
             if (!drawContext) {
                 return false;
             }
             GrPaint paint;
             paint.addColorFragmentProcessor(std::move(fp));
             paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
             paint.setAllowSRGBInputs(true);
             SkRect rect = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height));
             drawContext->drawRect(GrNoClip(), paint, matrix, rect, nullptr);
 
@@ skipping 156 matching lines @@
     ASSERT_OWNED_RESOURCE(src);
     GR_AUDIT_TRAIL_AUTO_FRAME(&fAuditTrail, "GrContext::applyGamma");
 
     // Dimensions must match exactly.
     if (dst->width() != src->width() || dst->height() != src->height()) {
         return false;
     }
 
     SkSurfaceProps props(SkSurfaceProps::kGammaCorrect_Flag,
                          SkSurfaceProps::kLegacyFontHost_InitType);
-    sk_sp<GrDrawContext> drawContext(this->drawContext(sk_ref_sp(dst), &props));
+    sk_sp<GrDrawContext> drawContext(this->drawContext(dst->width(), dst->height(), 
+                                                       sk_ref_sp(dst), &props));
     if (!drawContext) {
         return false;
     }
 
     GrPaint paint;
     paint.addColorTextureProcessor(src, nullptr, GrCoordTransform::MakeDivByTextureWHMatrix(src));
     if (!SkScalarNearlyEqual(gamma, 1.0f)) {
         paint.addColorFragmentProcessor(GrGammaEffect::Make(gamma));
     }
     paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
@@ skipping 41 matching lines @@
             return false;
         }
         // If we don't have an RT for the dst then we won't have a GrDrawContext to insert the
         // the copy surface into. In the future we plan to have a more limited Context type
         // (GrCopyContext?) that has the subset of GrDrawContext operations that should be
         // allowed on textures that aren't render targets.
         // For now we just flush any writes to the src and issue an immediate copy to the dst.
         src->flushWrites();
         return fGpu->copySurface(dst, src, clippedSrcRect, clippedDstPoint);
     }
-    sk_sp<GrDrawContext> drawContext(this->drawContext(sk_ref_sp(dst->asRenderTarget())));
+    sk_sp<GrDrawContext> drawContext(this->drawContext(dst->width(), dst->height(),
+                                                       sk_ref_sp(dst->asRenderTarget())));
     if (!drawContext) {
         return false;
     }
 
     if (!drawContext->copySurface(src, srcRect, dstPoint)) {
         return false;
     }
     return true;
 }
 
@@ skipping 18 matching lines @@
         if (dpi >= 250.0f) {
             chosenSampleCount = 4;
         } else {
             chosenSampleCount = 16;
         }
     }
     return chosenSampleCount <= fGpu->caps()->maxSampleCount() ? chosenSampleCount : 0;
 }
 
 
-sk_sp<GrDrawContext> GrContext::drawContext(sk_sp<GrRenderTarget> rt,
+sk_sp<GrDrawContext> GrContext::drawContext(int width, int height, sk_sp<GrRenderTarget> rt,
                                             const SkSurfaceProps* surfaceProps) {
     ASSERT_SINGLE_OWNER
-    return fDrawingManager->drawContext(std::move(rt), surfaceProps);
+    return fDrawingManager->drawContext(width, height, std::move(rt), surfaceProps);
 }
 
 sk_sp<GrDrawContext> GrContext::newDrawContext(SkBackingFit fit,
                                                int width, int height,
                                                GrPixelConfig config,
                                                int sampleCnt,
                                                GrSurfaceOrigin origin,
                                                const SkSurfaceProps* surfaceProps,
                                                SkBudgeted budgeted) {
     GrSurfaceDesc desc;
     desc.fFlags = kRenderTarget_GrSurfaceFlag;
     desc.fOrigin = origin;
     desc.fWidth = width;
     desc.fHeight = height;
     desc.fConfig = config;
     desc.fSampleCnt = sampleCnt;
 
     sk_sp<GrTexture> tex;
     if (SkBackingFit::kExact == fit) {
         tex.reset(this->textureProvider()->createTexture(desc, budgeted));
     } else {
         tex.reset(this->textureProvider()->createApproxTexture(desc));
     }
     if (!tex) {
         return nullptr;
     }
 
-    sk_sp<GrDrawContext> drawContext(this->drawContext(sk_ref_sp(tex->asRenderTarget()),
-                                                       surfaceProps));
+    sk_sp<GrDrawContext> drawContext(fDrawingManager->drawContext(width, height,
+                                                                  sk_ref_sp(tex->asRenderTarget()),
+                                                                  surfaceProps));
     if (!drawContext) {
         return nullptr;
     }
 
     return drawContext;
 }
 
 bool GrContext::abandoned() const {
     ASSERT_SINGLE_OWNER
     return fDrawingManager->wasAbandoned();
@@ skipping 74 matching lines @@
     ASSERT_SINGLE_OWNER
     fResourceCache->setLimits(maxTextures, maxTextureBytes);
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 void GrContext::dumpMemoryStatistics(SkTraceMemoryDump* traceMemoryDump) const {
     ASSERT_SINGLE_OWNER
     fResourceCache->dumpMemoryStatistics(traceMemoryDump);
 }