Make NVPR a GL context option instead of a GL context

tools/PictureRenderer.h

Index: tools/PictureRenderer.h
diff --git a/tools/PictureRenderer.h b/tools/PictureRenderer.h
new file mode 100644
index 0000000000000000000000000000000000000000..63043a030bd348b9aa2628b7667ff09d9c1947a0
--- /dev/null
+++ b/tools/PictureRenderer.h
@@ -0,0 +1,707 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef PictureRenderer_DEFINED
+#define PictureRenderer_DEFINED
+
+#include "SkCanvas.h"
+#include "SkDrawFilter.h"
+#include "SkJSONCPP.h"
+#include "SkMath.h"
+#include "SkPaint.h"
+#include "SkPicture.h"
+#include "SkPictureRecorder.h"
+#include "SkRect.h"
+#include "SkRefCnt.h"
+#include "SkString.h"
+#include "SkTDArray.h"
+#include "SkTypes.h"
+
+#if SK_SUPPORT_GPU
+#include "GrContextFactory.h"
+#include "GrContext.h"
+#endif
+
+struct GrContextOptions;
+class SkBitmap;
+class SkCanvas;
+class SkGLContext;
+class SkThread;
+
+namespace sk_tools {
+
+class TiledPictureRenderer;
+
+class PictureRenderer : public SkRefCnt {
+
+public:
+    enum SkDeviceTypes {
+#if SK_ANGLE
+        kAngle_DeviceType,
+#endif
+#if SK_COMMAND_BUFFER
+        kCommandBuffer_DeviceType,
+#endif
+#if SK_MESA
+        kMesa_DeviceType,
+#endif
+        kBitmap_DeviceType,
+#if SK_SUPPORT_GPU
+        kGPU_DeviceType,
+        kNVPR_DeviceType,
+#endif
+    };
+
+    enum BBoxHierarchyType {
+        kNone_BBoxHierarchyType = 0,
+        kRTree_BBoxHierarchyType,
+
+        kLast_BBoxHierarchyType = kRTree_BBoxHierarchyType,
+    };
+
+    // this uses SkPaint::Flags as a base and adds additional flags
+    enum DrawFilterFlags {
+        kNone_DrawFilterFlag = 0,
+        kHinting_DrawFilterFlag = 0x10000, // toggles between no hinting and normal hinting
+        kSlightHinting_DrawFilterFlag = 0x20000, // toggles between slight and normal hinting
+        kAAClip_DrawFilterFlag = 0x40000, // toggles between soft and hard clip
+        kMaskFilter_DrawFilterFlag = 0x80000, // toggles on/off mask filters (e.g., blurs)
+    };
+
+    static_assert(!(kMaskFilter_DrawFilterFlag & SkPaint::kAllFlags),
+                  "maskfilter_flag_must_be_greater");
+    static_assert(!(kHinting_DrawFilterFlag & SkPaint::kAllFlags),
+                  "hinting_flag_must_be_greater");
+    static_assert(!(kSlightHinting_DrawFilterFlag & SkPaint::kAllFlags),
+                  "slight_hinting_flag_must_be_greater");
+
+    /**
+     * Called with each new SkPicture to render.
+     *
+     * @param pict The SkPicture to render.
+     * @param writePath The output directory within which this renderer should write all images,
+     *     or nullptr if this renderer should not write all images.
+     * @param mismatchPath The output directory within which this renderer should write any images
+     *     which do not match expectations, or nullptr if this renderer should not write mismatches.
+     * @param inputFilename The name of the input file we are rendering.
+     * @param useChecksumBasedFilenames Whether to use checksum-based filenames when writing
+     *     bitmap images to disk.
+     * @param useMultiPictureDraw true if MultiPictureDraw should be used for rendering
+     */
+    virtual void init(const SkPicture* pict,
+                      const SkString* writePath,
+                      const SkString* mismatchPath,
+                      const SkString* inputFilename,
+                      bool useChecksumBasedFilenames,
+                      bool useMultiPictureDraw);
+
+    /**
+     *  Set the viewport so that only the portion listed gets drawn.
+     */
+    void setViewport(SkISize size) { fViewport = size; }
+
+    /**
+     *  Set the scale factor at which draw the picture.
+     */
+    void setScaleFactor(SkScalar scale) { fScaleFactor = scale; }
+
+    /**
+     * Perform any setup that should done prior to each iteration of render() which should not be
+     * timed.
+     */
+    virtual void setup() {}
+
+    /**
+     * Perform the work.  If this is being called within the context of bench_pictures,
+     * this is the step that will be timed.
+     *
+     * Typically "the work" is rendering an SkPicture into a bitmap, but in some subclasses
+     * it is recording the source SkPicture into another SkPicture.
+     *
+     * If fWritePath has been specified, the result of the work will be written to that dir.
+     * If fMismatchPath has been specified, and the actual image result differs from its
+     * expectation, the result of the work will be written to that dir.
+     *
+     * @param out If non-null, the implementing subclass MAY allocate an SkBitmap, copy the
+     *            output image into it, and return it here.  (Some subclasses ignore this parameter)
+     * @return bool True if rendering succeeded and, if fWritePath had been specified, the output
+     *              was successfully written to a file.
+     */
+    virtual bool render(SkBitmap** out = nullptr) = 0;
+
+    /**
+     * Called once finished with a particular SkPicture, before calling init again, and before
+     * being done with this Renderer.
+     */
+    virtual void end();
+
+    /**
+     * If this PictureRenderer is actually a TiledPictureRender, return a pointer to this as a
+     * TiledPictureRender so its methods can be called.
+     */
+    virtual TiledPictureRenderer* getTiledRenderer() { return nullptr; }
+
+    /**
+     * Resets the GPU's state. Does nothing if the backing is raster. For a GPU renderer, calls
+     * flush, swapBuffers and, if callFinish is true, finish.
+     * @param callFinish Whether to call finish.
+     */
+    void resetState(bool callFinish);
+
+    /**
+     * Remove all decoded textures from the CPU caches and all uploaded textures
+     * from the GPU.
+     */
+    void purgeTextures();
+
+    /**
+     * Set the backend type. Returns true on success and false on failure.
+     */
+#if SK_SUPPORT_GPU
+    bool setDeviceType(SkDeviceTypes deviceType, GrGLStandard gpuAPI = kNone_GrGLStandard) {
+#else
+    bool setDeviceType(SkDeviceTypes deviceType) {
+#endif
+        fDeviceType = deviceType;
+#if SK_SUPPORT_GPU
+        // In case this function is called more than once
+        fGrContext.reset();
+        fGLContext.reset();
+
+        // Set to Native so it will have an initial value.
+        GrContextFactory::GLContextType glContextType = GrContextFactory::kNative_GLContextType;
+        GrContextFactory::GLContextType glContextOptions = GrContextFactory::kNone_GLContextOptions;
+#endif
+        switch(deviceType) {
+            case kBitmap_DeviceType:
+                return true;
+#if SK_SUPPORT_GPU
+            case kGPU_DeviceType:
+                // Already set to GrContextFactory::kNative_GLContextType, above.
+                break;
+            case kNVPR_DeviceType:
+                // Already set to GrContextFactory::kNative_GLContextType, above.
+                glContextOptions = GrContextFactory::kEnableNVPR_GLContextOptions;
+                break;
+#if SK_ANGLE
+            case kAngle_DeviceType:
+                glContextType = GrContextFactory::kANGLE_GLContextType;
+                break;
+#endif
+#if SK_COMMAND_BUFFER
+            case kCommandBuffer_DeviceType:
+                glContextType = GrContextFactory::kCommandBuffer_GLContextType;
+                break;
+#endif
+#if SK_MESA
+            case kMesa_DeviceType:
+                glContextType = GrContextFactory::kMESA_GLContextType;
+                break;
+#endif
+#endif
+            default:
+                // Invalid device type.
+                return false;
+        }
+#if SK_SUPPORT_GPU
+        GrContextFactory::ContextInfo* contextInfo = fGrContextFactory.getContextInfo(glContextType, gpuAPI, glContextOptions);
+        if (contextInfo) {
+            fGrContext.reset(SkRef(contextInfo->fGrContext));
+            fGLContext.reset(SkRef(contextInfo->fGLContext));
+            return true;
+        }
+        return false;
+#endif
+    }
+
+#if SK_SUPPORT_GPU
+    void setSampleCount(int sampleCount) {
+        fSampleCount = sampleCount;
+    }
+
+    void setUseDFText(bool useDFText) {
+        fUseDFText = useDFText;
+    }
+#endif
+
+    void setDrawFilters(DrawFilterFlags const * const filters, const SkString& configName) {
+        fHasDrawFilters = false;
+        fDrawFiltersConfig = configName;
+
+        for (size_t i = 0; i < SK_ARRAY_COUNT(fDrawFilters); ++i) {
+            fDrawFilters[i] = filters[i];
+            fHasDrawFilters |= SkToBool(filters[i]);
+        }
+    }
+
+    void setBBoxHierarchyType(BBoxHierarchyType bbhType) {
+        fBBoxHierarchyType = bbhType;
+    }
+
+    BBoxHierarchyType getBBoxHierarchyType() { return fBBoxHierarchyType; }
+
+    bool isUsingBitmapDevice() {
+        return kBitmap_DeviceType == fDeviceType;
+    }
+
+    virtual SkString getPerIterTimeFormat() { return SkString("%.2f"); }
+
+    virtual SkString getNormalTimeFormat() { return SkString("%6.2f"); }
+
+    /**
+     * Reports the configuration of this PictureRenderer.
+     */
+    SkString getConfigName() {
+        SkString config = this->getConfigNameInternal();
+        if (!fViewport.isEmpty()) {
+            config.appendf("_viewport_%ix%i", fViewport.width(), fViewport.height());
+        }
+        if (fScaleFactor != SK_Scalar1) {
+            config.appendf("_scalar_%f", SkScalarToFloat(fScaleFactor));
+        }
+        if (kRTree_BBoxHierarchyType == fBBoxHierarchyType) {
+            config.append("_rtree");
+        }
+#if SK_SUPPORT_GPU
+        switch (fDeviceType) {
+            case kGPU_DeviceType:
+                if (fSampleCount) {
+                    config.appendf("_msaa%d", fSampleCount);
+                } else if (fUseDFText) {
+                    config.append("_gpudft");
+                } else {
+                    config.append("_gpu");
+                }
+                break;
+            case kNVPR_DeviceType:
+                config.appendf("_nvprmsaa%d", fSampleCount);
+                break;
+#if SK_ANGLE
+            case kAngle_DeviceType:
+                config.append("_angle");
+                break;
+#endif
+#if SK_COMMAND_BUFFER
+            case kCommandBuffer_DeviceType:
+                config.append("_commandbuffer");
+                break;
+#endif
+#if SK_MESA
+            case kMesa_DeviceType:
+                config.append("_mesa");
+                break;
+#endif
+            default:
+                // Assume that no extra info means bitmap.
+                break;
+        }
+#endif
+        config.append(fDrawFiltersConfig.c_str());
+        return config;
+    }
+
+    Json::Value getJSONConfig() {
+        Json::Value result;
+
+        result["mode"] = this->getConfigNameInternal().c_str();
+        result["scale"] = 1.0f;
+        if (SK_Scalar1 != fScaleFactor) {
+            result["scale"] = SkScalarToFloat(fScaleFactor);
+        }
+        if (kRTree_BBoxHierarchyType == fBBoxHierarchyType) {
+            result["bbh"] = "rtree";
+        }
+#if SK_SUPPORT_GPU
+        SkString tmp;
+        switch (fDeviceType) {
+            case kGPU_DeviceType:
+                if (0 != fSampleCount) {
+                    tmp = "msaa";
+                    tmp.appendS32(fSampleCount);
+                    result["config"] = tmp.c_str();
+                } else if (fUseDFText) {
+                    result["config"] = "gpudft";
+                } else {
+                    result["config"] = "gpu";
+                }
+                break;
+            case kNVPR_DeviceType:
+                tmp = "nvprmsaa";
+                tmp.appendS32(fSampleCount);
+                result["config"] = tmp.c_str();
+                break;
+#if SK_ANGLE
+            case kAngle_DeviceType:
+                result["config"] = "angle";
+                break;
+#endif
+#if SK_COMMAND_BUFFER
+            case kCommandBuffer_DeviceType:
+                result["config"] = "commandbuffer";
+                break;
+#endif
+#if SK_MESA
+            case kMesa_DeviceType:
+                result["config"] = "mesa";
+                break;
+#endif
+            default:
+                // Assume that no extra info means bitmap.
+                break;
+        }
+#endif
+        return result;
+    }
+
+#if SK_SUPPORT_GPU
+    bool isUsingGpuDevice() {
+        switch (fDeviceType) {
+            case kGPU_DeviceType:
+            case kNVPR_DeviceType:
+                // fall through
+#if SK_ANGLE
+            case kAngle_DeviceType:
+                // fall through
+#endif
+#if SK_COMMAND_BUFFER
+            case kCommandBuffer_DeviceType:
+                // fall through
+#endif
+#if SK_MESA
+            case kMesa_DeviceType:
+#endif
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    SkGLContext* getGLContext() {
+        return fGLContext;
+    }
+
+    GrContext* getGrContext() {
+        return fGrContext;
+    }
+
+    const GrContextOptions& getGrContextOptions() {
+        return fGrContextFactory.getGlobalOptions();
+    }
+#endif
+
+    SkCanvas* getCanvas() {
+        return fCanvas;
+    }
+
+    const SkPicture* getPicture() {
+        return fPicture;
+    }
+
+#if SK_SUPPORT_GPU
+    explicit PictureRenderer(const GrContextOptions &opts)
+#else
+    PictureRenderer()
+#endif
+        : fDeviceType(kBitmap_DeviceType)
+        , fBBoxHierarchyType(kNone_BBoxHierarchyType)
+        , fHasDrawFilters(false)
+        , fScaleFactor(SK_Scalar1)
+#if SK_SUPPORT_GPU
+        , fGrContextFactory(opts)
+        , fSampleCount(0)
+        , fUseDFText(false)
+#endif
+        {
+            sk_bzero(fDrawFilters, sizeof(fDrawFilters));
+            fViewport.set(0, 0);
+        }
+
+protected:
+    SkAutoTUnref<SkCanvas> fCanvas;
+    SkAutoTUnref<const SkPicture> fPicture;
+    bool                   fUseChecksumBasedFilenames;
+    bool                   fUseMultiPictureDraw;
+    SkDeviceTypes          fDeviceType;
+    BBoxHierarchyType      fBBoxHierarchyType;
+    bool                   fHasDrawFilters;
+    DrawFilterFlags        fDrawFilters[SkDrawFilter::kTypeCount];
+    SkString               fDrawFiltersConfig;
+    SkString               fWritePath;
+    SkString               fMismatchPath;
+    SkString               fInputFilename;
+
+    void buildBBoxHierarchy();
+
+    /**
+     * Return the total width that should be drawn. If the viewport width has been set greater than
+     * 0, this will be the minimum of the current SkPicture's width and the viewport's width.
+     */
+    int getViewWidth();
+
+    /**
+     * Return the total height that should be drawn. If the viewport height has been set greater
+     * than 0, this will be the minimum of the current SkPicture's height and the viewport's height.
+     */
+    int getViewHeight();
+
+    /**
+     * Scales the provided canvas to the scale factor set by setScaleFactor.
+     */
+    void scaleToScaleFactor(SkCanvas*);
+
+    SkBBHFactory* getFactory();
+    uint32_t recordFlags() const { return 0; }
+    SkCanvas* setupCanvas();
+    virtual SkCanvas* setupCanvas(int width, int height);
+
+    /**
+     * Copy src to dest; if src==nullptr, set dest to empty string.
+     */
+    static void CopyString(SkString* dest, const SkString* src);
+
+private:
+    SkISize                   fViewport;
+    SkScalar                  fScaleFactor;
+#if SK_SUPPORT_GPU
+    GrContextFactory          fGrContextFactory;
+    SkAutoTUnref<GrContext>   fGrContext;
+    SkAutoTUnref<SkGLContext> fGLContext;
+    int                       fSampleCount;
+    bool                      fUseDFText;
+#endif
+
+    virtual SkString getConfigNameInternal() = 0;
+
+    typedef SkRefCnt INHERITED;
+};
+
+/**
+ * This class does not do any rendering, but its render function executes recording, which we want
+ * to time.
+ */
+class RecordPictureRenderer : public PictureRenderer {
+public:
+#if SK_SUPPORT_GPU
+    RecordPictureRenderer(const GrContextOptions &opts) : INHERITED(opts) { }
+#endif
+
+    bool render(SkBitmap** out = nullptr) override;
+
+    SkString getPerIterTimeFormat() override { return SkString("%.4f"); }
+
+    SkString getNormalTimeFormat() override { return SkString("%6.4f"); }
+
+protected:
+    SkCanvas* setupCanvas(int width, int height) override;
+
+private:
+    SkString getConfigNameInternal() override;
+
+    typedef PictureRenderer INHERITED;
+};
+
+class PipePictureRenderer : public PictureRenderer {
+public:
+#if SK_SUPPORT_GPU
+    PipePictureRenderer(const GrContextOptions &opts) : INHERITED(opts) { }
+#endif
+
+    bool render(SkBitmap** out = nullptr) override;
+
+private:
+    SkString getConfigNameInternal() override;
+
+    typedef PictureRenderer INHERITED;
+};
+
+class SimplePictureRenderer : public PictureRenderer {
+public:
+#if SK_SUPPORT_GPU
+    SimplePictureRenderer(const GrContextOptions &opts) : INHERITED(opts) { }
+#endif
+
+    virtual void init(const SkPicture* pict,
+                      const SkString* writePath,
+                      const SkString* mismatchPath,
+                      const SkString* inputFilename,
+                      bool useChecksumBasedFilenames,
+                      bool useMultiPictureDraw) override;
+
+    bool render(SkBitmap** out = nullptr) override;
+
+private:
+    SkString getConfigNameInternal() override;
+
+    typedef PictureRenderer INHERITED;
+};
+
+class TiledPictureRenderer : public PictureRenderer {
+public:
+#if SK_SUPPORT_GPU
+    TiledPictureRenderer(const GrContextOptions &opts);
+#else
+    TiledPictureRenderer();
+#endif
+
+    virtual void init(const SkPicture* pict,
+                      const SkString* writePath,
+                      const SkString* mismatchPath,
+                      const SkString* inputFilename,
+                      bool useChecksumBasedFilenames,
+                      bool useMultiPictureDraw) override;
+
+    /**
+     * Renders to tiles, rather than a single canvas.
+     * If fWritePath was provided, a separate file is
+     * created for each tile, named "path0.png", "path1.png", etc.
+     */
+    bool render(SkBitmap** out = nullptr) override;
+
+    void end() override;
+
+    void setTileWidth(int width) {
+        fTileWidth = width;
+    }
+
+    int getTileWidth() const {
+        return fTileWidth;
+    }
+
+    void setTileHeight(int height) {
+        fTileHeight = height;
+    }
+
+    int getTileHeight() const {
+        return fTileHeight;
+    }
+
+    void setTileWidthPercentage(double percentage) {
+        fTileWidthPercentage = percentage;
+    }
+
+    double getTileWidthPercentage() const {
+        return fTileWidthPercentage;
+    }
+
+    void setTileHeightPercentage(double percentage) {
+        fTileHeightPercentage = percentage;
+    }
+
+    double getTileHeightPercentage() const {
+        return fTileHeightPercentage;
+    }
+
+    void setTileMinPowerOf2Width(int width) {
+        SkASSERT(SkIsPow2(width) && width > 0);
+        if (!SkIsPow2(width) || width <= 0) {
+            return;
+        }
+
+        fTileMinPowerOf2Width = width;
+    }
+
+    int getTileMinPowerOf2Width() const {
+        return fTileMinPowerOf2Width;
+    }
+
+    TiledPictureRenderer* getTiledRenderer() override { return this; }
+
+    virtual bool supportsTimingIndividualTiles() { return true; }
+
+    /**
+     * Report the number of tiles in the x and y directions. Must not be called before init.
+     * @param x Output parameter identifying the number of tiles in the x direction.
+     * @param y Output parameter identifying the number of tiles in the y direction.
+     * @return True if the tiles have been set up, and x and y are meaningful. If false, x and y are
+     *         unmodified.
+     */
+    bool tileDimensions(int& x, int&y);
+
+    /**
+     * Move to the next tile and return its indices. Must be called before calling drawCurrentTile
+     * for the first time.
+     * @param i Output parameter identifying the column of the next tile to be drawn on the next
+     *          call to drawNextTile.
+     * @param j Output parameter identifying the row  of the next tile to be drawn on the next call
+     *          to drawNextTile.
+     * @param True if the tiles have been created and the next tile to be drawn by drawCurrentTile
+     *        is within the range of tiles. If false, i and j are unmodified.
+     */
+    bool nextTile(int& i, int& j);
+
+    /**
+     * Render one tile. This will draw the same tile each time it is called until nextTile is
+     * called. The tile rendered will depend on how many calls have been made to nextTile.
+     * It is an error to call this without first calling nextTile, or if nextTile returns false.
+     */
+    void drawCurrentTile();
+
+protected:
+    SkTDArray<SkIRect> fTileRects;
+
+    SkCanvas* setupCanvas(int width, int height) override;
+    SkString getConfigNameInternal() override;
+
+private:
+    int    fTileWidth;
+    int    fTileHeight;
+    double fTileWidthPercentage;
+    double fTileHeightPercentage;
+    int    fTileMinPowerOf2Width;
+
+    // These variables are only used for timing individual tiles.
+    // Next tile to draw in fTileRects.
+    int    fCurrentTileOffset;
+    // Number of tiles in the x direction.
+    int    fTilesX;
+    // Number of tiles in the y direction.
+    int    fTilesY;
+
+    void setupTiles();
+    void setupPowerOf2Tiles();
+    bool postRender(SkCanvas*, const SkIRect& tileRect,
+                    SkBitmap* tempBM, SkBitmap** out,
+                    int tileNumber);
+
+    typedef PictureRenderer INHERITED;
+};
+
+/**
+ * This class does not do any rendering, but its render function executes turning an SkPictureRecord
+ * into an SkPicturePlayback, which we want to time.
+ */
+class PlaybackCreationRenderer : public PictureRenderer {
+public:
+#if SK_SUPPORT_GPU
+    PlaybackCreationRenderer(const GrContextOptions &opts) : INHERITED(opts) { }
+#endif
+
+    void setup() override;
+
+    bool render(SkBitmap** out = nullptr) override;
+
+    SkString getPerIterTimeFormat() override { return SkString("%.4f"); }
+
+    SkString getNormalTimeFormat() override { return SkString("%6.4f"); }
+
+private:
+    SkAutoTDelete<SkPictureRecorder> fRecorder;
+
+    SkString getConfigNameInternal() override;
+
+    typedef PictureRenderer INHERITED;
+};
+
+#if SK_SUPPORT_GPU
+extern PictureRenderer* CreateGatherPixelRefsRenderer(const GrContextOptions& opts);
+#else
+extern PictureRenderer* CreateGatherPixelRefsRenderer();
+#endif
+
+}
+
+#endif  // PictureRenderer_DEFINED