Initial implementation of GPU no filter NinePatch

src/gpu/SkGpuDevice.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 "SkGpuDevice.h"
 
 #include "GrBlurUtils.h"
@@ skipping 12 matching lines @@
 #include "SkDrawProcs.h"
 #include "SkErrorInternals.h"
 #include "SkGlyphCache.h"
 #include "SkGrTexturePixelRef.h"
 #include "SkGr.h"
 #include "SkGrPriv.h"
 #include "SkImage_Base.h"
 #include "SkImageFilter.h"
 #include "SkLayerInfo.h"
 #include "SkMaskFilter.h"
+#include "SkNinePatchIter.h"
 #include "SkPathEffect.h"
 #include "SkPicture.h"
 #include "SkPictureData.h"
 #include "SkRRect.h"
 #include "SkRecord.h"
 #include "SkStroke.h"
 #include "SkSurface.h"
 #include "SkSurface_Gpu.h"
 #include "SkTLazy.h"
 #include "SkUtils.h"
@@ skipping 1236 matching lines @@
                                          paramsTemp,
                                          *paint,
                                          constraint,
                                          bicubic,
                                          needsTextureDomain);
             }
         }
     }
 }
 
-
 /*
  *  This is called by drawBitmap(), which has to handle images that may be too
  *  large to be represented by a single texture.
  *
  *  internalDrawBitmap assumes that the specified bitmap will fit in a texture
  *  and that non-texture portion of the GrPaint has already been setup.
  */
 void SkGpuDevice::internalDrawBitmap(const SkBitmap& bitmap,
                                      const SkMatrix& viewMatrix,
                                      const SkRect& srcRect,
@@ skipping 33 matching lines @@
         // local coords with the bitmap draw since it may mess up texture look ups for the shader.
         // Thus we need to pass in the transform matrix directly to the texture processor used for
         // the bitmap draw.
         texMatrix.setScale(wInv, hInv);
     }
 
     SkRect textureDomain = SkRect::MakeEmpty();
 
     // Construct a GrPaint by setting the bitmap texture as the first effect and then configuring
     // the rest from the SkPaint.
-    GrPaint grPaint;
     SkAutoTUnref<const GrFragmentProcessor> fp;
 
     if (needsTextureDomain && (SkCanvas::kStrict_SrcRectConstraint == constraint)) {
         // Use a constrained texture domain to avoid color bleeding
         SkScalar left, top, right, bottom;
         if (srcRect.width() > SK_Scalar1) {
             SkScalar border = SK_ScalarHalf / texture->width();
             left = paintRect.left() + border;
             right = paintRect.right() - border;
         } else {
@@ skipping 17 matching lines @@
                                                    params.filterMode()));
         }
     } else if (bicubic) {
         SkASSERT(GrTextureParams::kNone_FilterMode == params.filterMode());
         SkShader::TileMode tileModes[2] = { params.getTileModeX(), params.getTileModeY() };
         fp.reset(GrBicubicEffect::Create(texture, texMatrix, tileModes));
     } else {
         fp.reset(GrSimpleTextureEffect::Create(texture, texMatrix, params));
     }
 
-    SkAutoTUnref<const GrFragmentProcessor> shaderFP;
-
-    if (kAlpha_8_SkColorType == bitmap.colorType()) {
-        if (const SkShader* shader = paint.getShader()) {
-            shaderFP.reset(shader->asFragmentProcessor(this->context(),
-                                                       viewMatrix,
-                                                       nullptr,
-                                                       paint.getFilterQuality()));
-            if (!shaderFP) {
-                return;
-            }
-            const GrFragmentProcessor* fpSeries[] = { shaderFP.get(), fp.get() };
-            fp.reset(GrFragmentProcessor::RunInSeries(fpSeries, 2));
-        } else {
-            fp.reset(GrFragmentProcessor::MulOutputByInputUnpremulColor(fp));
-        }
-    } else {
-        fp.reset(GrFragmentProcessor::MulOutputByInputAlpha(fp));
-    }
-
-    if (!SkPaintToGrPaintReplaceShader(this->context(), paint, fp, &grPaint)) {
+    GrPaint grPaint;
+    if (!SkPaintToGrPaintWithTexture(this->context(), paint, viewMatrix, fp,
+                                     kAlpha_8_SkColorType == bitmap.colorType(), &grPaint)) {
         return;
     }
 
     if (kAlpha_8_SkColorType == bitmap.colorType() && paint.getShader()) {
         // We don't have local coords in this case and have previously set the transform
         // matrices directly on the texture processor.
         fDrawContext->drawRect(fClip, grPaint, viewMatrix, dstRect);
     } else {
         fDrawContext->fillRectToRect(fClip, grPaint, viewMatrix, dstRect, paintRect);
     }
@@ skipping 308 matching lines @@
             return;
         }
     } else {
         if (!wrap_as_bm(this->context(), image, &bm)) {
             return;
         }
     }
     this->drawBitmapRect(draw, bm, src, dst, paint, constraint);
 }
 
+void SkGpuDevice::drawImageNine(const SkDraw& draw, const SkImage* image,
+                                const SkIRect& center, const SkRect& dst, const SkPaint& paint) {
+    // TODO write native implementation
+    SkBitmap bitmap;
+    if (!wrap_as_bm(this->context(), image, &bitmap)) {
+        return;
+    }
+    return this->drawBitmapNine(draw, bitmap, center, dst, paint);
+}
+
+void SkGpuDevice::drawBitmapNine(const SkDraw& draw, const SkBitmap& bitmap, const SkIRect& center,
+                                 const SkRect& dst, const SkPaint& paint) {
+    GR_CREATE_TRACE_MARKER_CONTEXT("SkGpuDevice::drawBitmapNine", fContext);
+
+    CHECK_FOR_ANNOTATION(paint);
+    CHECK_SHOULD_DRAW(draw);
+

[robertphillips, 2015/11/18 18:12:07]

This comment seems wrong ...

[joshualitt, 2015/11/18 19:07:07]

Acknowledged.

+    // we fallback for bitmap backed textures
+    bool useFallback = paint.getMaskFilter() || paint.isAntiAlias();
+    bool doBicubic;
+    GrTextureParams::FilterMode textureFilterMode =
+            GrSkFilterQualityToGrFilterMode(paint.getFilterQuality(), *draw.fMatrix, SkMatrix::I(),
+                                            &doBicubic);
+
+    // TODO handle bilerp
+    if (useFallback || doBicubic || GrTextureParams::kNone_FilterMode != textureFilterMode) {
+        SkNinePatchIter iter(bitmap.width(), bitmap.height(), center, dst);
+
+        SkRect srcR, dstR;
+        while (iter.next(&srcR, &dstR)) {
+            this->drawBitmapRect(draw, bitmap, &srcR, dstR, paint,
+                                 SkCanvas::kStrict_SrcRectConstraint);
+        }
+        return;
+    }
+
+    GrTextureParams params = GrTextureParams::ClampNoFilter();
+
+    GrTexture* texture(GrRefCachedBitmapTexture(this->context(), bitmap, params));
+    if (nullptr == texture) {
+        return;
+    }
+
+    SkMatrix texMatrix;
+    texMatrix.setIDiv(texture->width(), texture->height());
+
+    SkAutoTUnref<const GrFragmentProcessor> fp(GrSimpleTextureEffect::Create(texture, texMatrix,
+                                                                             params));
+
+    GrPaint grPaint;
+    if (!SkPaintToGrPaintWithTexture(this->context(), paint, *draw.fMatrix, fp,
+                                     kAlpha_8_SkColorType == bitmap.colorType(), &grPaint)) {
+        return;
+    }
+
+    fDrawContext->drawImageNine(fClip, grPaint, *draw.fMatrix, bitmap.width(), bitmap.height(),
+                                center, dst);
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 // must be in SkCanvas::VertexMode order
 static const GrPrimitiveType gVertexMode2PrimitiveType[] = {
     kTriangles_GrPrimitiveType,
     kTriangleStrip_GrPrimitiveType,
     kTriangleFan_GrPrimitiveType,
 };
 
 void SkGpuDevice::drawVertices(const SkDraw& draw, SkCanvas::VertexMode vmode,
@@ skipping 330 matching lines @@
     return SkImageFilter::Cache::Create(kDefaultImageFilterCacheSize);
 }
 
 SkImageFilter::Cache* SkGpuDevice::getImageFilterCache() {
     // We always return a transient cache, so it is freed after each
     // filter traversal.
     return SkGpuDevice::NewImageFilterCache();
 }
 
 #endif