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Commit 3f76e65d authored by Chris Craik's avatar Chris Craik
Browse files

Use RenderScript for large text blurs 

Still fall back to simple path for small tasks

Change-Id: I492f1b3f7d6fec1738f3e45cbfb15864bd23a392
parent d04892d2

libs/hwui/Android.mk

+8 −3
Original line number Diff line number Diff line
@@ -37,6 +37,8 @@ ifeq ($(USE_OPENGL_RENDERER),true) 
		TextureCache.cpp \

		TextDropShadowCache.cpp



	intermediates := $(call intermediates-dir-for,STATIC_LIBRARIES,libRS,TARGET,)



	LOCAL_C_INCLUDES += \

		$(JNI_H_INCLUDE) \

		$(LOCAL_PATH)/../../include/utils \
@@ -45,11 +47,14 @@ ifeq ($(USE_OPENGL_RENDERER),true) 
		external/skia/include/images \

		external/skia/src/core \

		external/skia/src/ports \

		external/skia/include/utils

		external/skia/include/utils \

		$(intermediates) \

		frameworks/rs/cpp \

		frameworks/rs



	LOCAL_CFLAGS += -DUSE_OPENGL_RENDERER -DGL_GLEXT_PROTOTYPES

	LOCAL_MODULE_CLASS := SHARED_LIBRARIES

	LOCAL_SHARED_LIBRARIES := libcutils libutils libGLESv2 libskia libui

	LOCAL_SHARED_LIBRARIES := libcutils libutils libGLESv2 libskia libui libRS libRScpp

	LOCAL_MODULE := libhwui

	LOCAL_MODULE_TAGS := optional

libs/hwui/FontRenderer.cpp

+48 −12
Original line number Diff line number Diff line
@@ -23,6 +23,9 @@ 


#include <utils/Log.h>



#include "RenderScript.h"



#include "utils/Timing.h"

#include "Caches.h"

#include "Debug.h"

#include "FontRenderer.h"
@@ -31,6 +34,9 @@ 
namespace android {

namespace uirenderer {



// blur inputs smaller than this constant will bypass renderscript

#define RS_MIN_INPUT_CUTOFF 10000



///////////////////////////////////////////////////////////////////////////////

// FontRenderer

///////////////////////////////////////////////////////////////////////////////
@@ -544,18 +550,22 @@ FontRenderer::DropShadow FontRenderer::renderDropShadow(SkPaint* paint, const ch 


    uint32_t paddedWidth = (uint32_t) (bounds.right - bounds.left) + 2 * radius;

    uint32_t paddedHeight = (uint32_t) (bounds.top - bounds.bottom) + 2 * radius;

    uint8_t* dataBuffer = new uint8_t[paddedWidth * paddedHeight];



    for (uint32_t i = 0; i < paddedWidth * paddedHeight; i++) {

        dataBuffer[i] = 0;

    // Align buffers for renderscript usage

    if (paddedWidth & (RS_CPU_ALLOCATION_ALIGNMENT - 1)) {

        paddedWidth += RS_CPU_ALLOCATION_ALIGNMENT - paddedWidth % RS_CPU_ALLOCATION_ALIGNMENT;

    }



    int size = paddedWidth * paddedHeight;

    uint8_t* dataBuffer = (uint8_t*)memalign(RS_CPU_ALLOCATION_ALIGNMENT, size);

    memset(dataBuffer, 0, size);



    int penX = radius - bounds.left;

    int penY = radius - bounds.bottom;



    mCurrentFont->render(paint, text, startIndex, len, numGlyphs, penX, penY,

            Font::BITMAP, dataBuffer, paddedWidth, paddedHeight, NULL, positions);

    blurImage(dataBuffer, paddedWidth, paddedHeight, radius);

    blurImage(&dataBuffer, paddedWidth, paddedHeight, radius);



    DropShadow image;

    image.width = paddedWidth;
@@ -752,19 +762,45 @@ void FontRenderer::verticalBlur(float* weights, int32_t radius, 
    }

}





void FontRenderer::blurImage(uint8_t *image, int32_t width, int32_t height, int32_t radius) {

void FontRenderer::blurImage(uint8_t** image, int32_t width, int32_t height, int32_t radius) {

    if (width * height * radius < RS_MIN_INPUT_CUTOFF) {

        float *gaussian = new float[2 * radius + 1];

        computeGaussianWeights(gaussian, radius);



        uint8_t* scratch = new uint8_t[width * height];



    horizontalBlur(gaussian, radius, image, scratch, width, height);

    verticalBlur(gaussian, radius, scratch, image, width, height);

        horizontalBlur(gaussian, radius, *image, scratch, width, height);

        verticalBlur(gaussian, radius, scratch, *image, width, height);



        delete[] gaussian;

        delete[] scratch;

    }



    uint8_t* outImage = (uint8_t*)memalign(RS_CPU_ALLOCATION_ALIGNMENT, width * height);



    if (mRs.get() == 0) {

        mRs = new RSC::RS();

        if (!mRs->init(true, true)) {

            ALOGE("blur RS failed to init");

        }



        mRsElement = RSC::Element::A_8(mRs);

        mRsScript = new RSC::ScriptIntrinsicBlur(mRs, mRsElement);

    }



    sp<const RSC::Type> t = RSC::Type::create(mRs, mRsElement, width, height, 0);

    sp<RSC::Allocation> ain = RSC::Allocation::createTyped(mRs, t, RS_ALLOCATION_MIPMAP_NONE,

            RS_ALLOCATION_USAGE_SCRIPT | RS_ALLOCATION_USAGE_SHARED, *image);

    sp<RSC::Allocation> aout = RSC::Allocation::createTyped(mRs, t, RS_ALLOCATION_MIPMAP_NONE,

            RS_ALLOCATION_USAGE_SCRIPT | RS_ALLOCATION_USAGE_SHARED, outImage);



    mRsScript->setRadius(radius);

    mRsScript->blur(ain, aout);



    // replace the original image's pointer, avoiding a copy back to the original buffer

    delete *image;

    *image = outImage;

}



}; // namespace uirenderer

}; // namespace android

libs/hwui/FontRenderer.h

+14 −2
Original line number Diff line number Diff line
@@ -31,6 +31,12 @@ 
#include "Matrix.h"

#include "Properties.h"



namespace RSC {

    class Element;

    class RS;

    class ScriptIntrinsicBlur;

}



namespace android {

namespace uirenderer {
@@ -178,13 +184,19 @@ private: 
    Vector<uint32_t> mDrawCounts;

    Vector<CacheTexture*> mDrawCacheTextures;



    /** We should consider multi-threading this code or using Renderscript **/

    // RS constructs

    sp<RSC::RS> mRs;

    sp<const RSC::Element> mRsElement;

    sp<RSC::ScriptIntrinsicBlur> mRsScript;



    static void computeGaussianWeights(float* weights, int32_t radius);

    static void horizontalBlur(float* weights, int32_t radius, const uint8_t *source, uint8_t *dest,

            int32_t width, int32_t height);

    static void verticalBlur(float* weights, int32_t radius, const uint8_t *source, uint8_t *dest,

            int32_t width, int32_t height);

    static void blurImage(uint8_t* image, int32_t width, int32_t height, int32_t radius);



    // the input image handle may have its pointer replaced (to avoid copies)

    void blurImage(uint8_t** image, int32_t width, int32_t height, int32_t radius);

};



}; // namespace uirenderer

libs/hwui/TextDropShadowCache.cpp

+1 −1
Original line number Diff line number Diff line
@@ -222,7 +222,7 @@ ShadowTexture* TextDropShadowCache::get(SkPaint* paint, const char* text, uint32 
        }



        // Cleanup shadow

        delete[] shadow.image;

        delete shadow.image;

    }



    return texture;

libs/hwui/utils/Timing.h

0 → 100644
+42 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2013 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



#ifndef ANDROID_HWUI_TIMING_H

#define ANDROID_HWUI_TIMING_H



#include <sys/time.h>



#define TIME_METHOD() MethodTimer __method_timer(__func__)

class MethodTimer {

public:

    MethodTimer(const char* name)

            : mMethodName(name) {

        gettimeofday(&mStart, NULL);

    }



    ~MethodTimer() {

        struct timeval stop;

        gettimeofday(&stop, NULL);

        long long elapsed = (stop.tv_sec * 1000000) - (mStart.tv_sec * 1000000)

                + (stop.tv_usec - mStart.tv_usec);

        ALOGD("%s took %.2fms", mMethodName, elapsed / 1000.0);

    }

private:

    const char* mMethodName;

    struct timeval mStart;

};



#endif