Index: src/image/SkImageShader.cpp |
diff --git a/src/image/SkImageShader.cpp b/src/image/SkImageShader.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..fde0f0c9d56a93d1f4bc3f1d3bfe16ce9bdbfa9f |
--- /dev/null |
+++ b/src/image/SkImageShader.cpp |
@@ -0,0 +1,144 @@ |
+/* |
+ * 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 "SkBitmapProcShader.h" |
+#include "SkBitmapProvider.h" |
+#include "SkImage_Base.h" |
+#include "SkImageShader.h" |
+#include "SkReadBuffer.h" |
+#include "SkWriteBuffer.h" |
+ |
+SkImageShader::SkImageShader(const SkImage* img, TileMode tmx, TileMode tmy, const SkMatrix* matrix) |
+ : INHERITED(matrix) |
+ , fImage(SkRef(img)) |
+ , fTileModeX(tmx) |
+ , fTileModeY(tmy) |
+{} |
+ |
+SkFlattenable* SkImageShader::CreateProc(SkReadBuffer& buffer) { |
+ const TileMode tx = (TileMode)buffer.readUInt(); |
+ const TileMode ty = (TileMode)buffer.readUInt(); |
+ SkMatrix matrix; |
+ buffer.readMatrix(&matrix); |
+ SkAutoTUnref<SkImage> img(buffer.readImage()); |
+ if (!img) { |
+ return nullptr; |
+ } |
+ return new SkImageShader(img, tx, ty, &matrix); |
+} |
+ |
+void SkImageShader::flatten(SkWriteBuffer& buffer) const { |
+ buffer.writeUInt(fTileModeX); |
+ buffer.writeUInt(fTileModeY); |
+ buffer.writeMatrix(this->getLocalMatrix()); |
+ buffer.writeImage(fImage); |
+} |
+ |
+bool SkImageShader::isOpaque() const { |
+ return fImage->isOpaque(); |
+} |
+ |
+size_t SkImageShader::contextSize() const { |
+ return SkBitmapProcShader::ContextSize(); |
+} |
+ |
+SkShader::Context* SkImageShader::onCreateContext(const ContextRec& rec, void* storage) const { |
+ return SkBitmapProcShader::MakeContext(*this, fTileModeX, fTileModeY, |
+ SkBitmapProvider(fImage), rec, storage); |
+} |
+ |
+SkShader* SkImageShader::Create(const SkImage* image, TileMode tx, TileMode ty, |
+ const SkMatrix* localMatrix) { |
+ if (!image) { |
+ return nullptr; |
+ } |
+ return new SkImageShader(image, tx, ty, localMatrix); |
+} |
+ |
+#ifndef SK_IGNORE_TO_STRING |
+void SkImageShader::toString(SkString* str) const { |
+ const char* gTileModeName[SkShader::kTileModeCount] = { |
+ "clamp", "repeat", "mirror" |
+ }; |
+ |
+ str->appendf("ImageShader: ((%s %s) ", gTileModeName[fTileModeX], gTileModeName[fTileModeY]); |
+ fImage->toString(str); |
+ this->INHERITED::toString(str); |
+ str->append(")"); |
+} |
+#endif |
+ |
+/////////////////////////////////////////////////////////////////////////////////////////////////// |
+ |
+#if SK_SUPPORT_GPU |
+ |
+#include "GrTextureAccess.h" |
+#include "SkGr.h" |
robertphillips
2015/09/30 19:25:56
included twice ?
|
+#include "effects/GrSimpleTextureEffect.h" |
+#include "effects/GrBicubicEffect.h" |
+#include "effects/GrSimpleTextureEffect.h" |
+ |
+const GrFragmentProcessor* SkImageShader::asFragmentProcessor(GrContext* context, |
+ const SkMatrix& viewM, |
+ const SkMatrix* localMatrix, |
+ SkFilterQuality filterQuality, |
+ GrProcessorDataManager* mgr) const { |
+ SkMatrix matrix; |
+ matrix.setIDiv(fImage->width(), fImage->height()); |
+ |
+ SkMatrix lmInverse; |
+ if (!this->getLocalMatrix().invert(&lmInverse)) { |
+ return nullptr; |
+ } |
+ if (localMatrix) { |
+ SkMatrix inv; |
+ if (!localMatrix->invert(&inv)) { |
+ return nullptr; |
+ } |
+ lmInverse.postConcat(inv); |
+ } |
+ matrix.preConcat(lmInverse); |
+ |
+ SkShader::TileMode tm[] = { fTileModeX, fTileModeY }; |
+ |
+ // Must set wrap and filter on the sampler before requesting a texture. In two places below |
+ // we check the matrix scale factors to determine how to interpret the filter quality setting. |
+ // This completely ignores the complexity of the drawVertices case where explicit local coords |
+ // are provided by the caller. |
+ bool doBicubic; |
+ GrTextureParams::FilterMode textureFilterMode = |
robertphillips
2015/09/30 19:25:56
This is a surprising indentation ...
|
+ GrSkFilterQualityToGrFilterMode(filterQuality, viewM, this->getLocalMatrix(), &doBicubic); |
+ GrTextureParams params(tm, textureFilterMode); |
+ |
+ SkImageUsageType usageType; |
+ if (kClamp_TileMode == fTileModeX && kClamp_TileMode == fTileModeY) { |
+ usageType = kUntiled_SkImageUsageType; |
+ } else if (GrTextureParams::kNone_FilterMode == textureFilterMode) { |
+ usageType = kTiled_Unfiltered_SkImageUsageType; |
+ } else { |
+ usageType = kTiled_Filtered_SkImageUsageType; |
+ } |
+ |
+ SkAutoTUnref<GrTexture> texture(as_IB(fImage)->asTextureRef(context, usageType)); |
+ if (!texture) { |
+ return nullptr; |
+ } |
+ |
+ SkAutoTUnref<GrFragmentProcessor> inner; |
+ if (doBicubic) { |
+ inner.reset(GrBicubicEffect::Create(mgr, texture, matrix, tm)); |
+ } else { |
+ inner.reset(GrSimpleTextureEffect::Create(mgr, texture, matrix, params)); |
+ } |
+ |
+ if (GrPixelConfigIsAlphaOnly(texture->config())) { |
+ return SkRef(inner.get()); |
+ } |
+ return GrFragmentProcessor::MulOutputByInputAlpha(inner); |
+} |
+ |
+#endif |