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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Benchmark.h"
#include "Resources.h"
#include "SkCanvas.h"
#include "SkData.h"
#include "SkImageGenerator.h"
#include "SkImageDecoder.h"
#include "SkOSFile.h"
#include "SkPixelRef.h"
#ifndef SK_IGNORE_ETC1_SUPPORT
#include "etc1.h"
// This takes the etc1 data pointed to by orig, and copies it `factor` times in each
// dimension. The return value is the new data or NULL on error.
static etc1_byte* create_expanded_etc1_bitmap(const uint8_t* orig, int factor) {
SkASSERT(orig);
SkASSERT(factor > 1);
const etc1_byte* origData = reinterpret_cast<const etc1_byte*>(orig);
if (!etc1_pkm_is_valid(orig)) {
return NULL;
}
etc1_uint32 origWidth = etc1_pkm_get_width(origData);
etc1_uint32 origHeight = etc1_pkm_get_height(origData);
// The width and height must be aligned along block boundaries
static const etc1_uint32 kETC1BlockWidth = 4;
static const etc1_uint32 kETC1BlockHeight = 4;
if ((origWidth % kETC1BlockWidth) != 0 ||
(origHeight % kETC1BlockHeight) != 0) {
return NULL;
}
// The picture must be at least as large as a block.
if (origWidth <= kETC1BlockWidth || origHeight <= kETC1BlockHeight) {
return NULL;
}
etc1_uint32 newWidth = origWidth * factor;
etc1_uint32 newHeight = origHeight * factor;
etc1_uint32 newDataSz = etc1_get_encoded_data_size(newWidth, newHeight);
etc1_byte* newData = reinterpret_cast<etc1_byte *>(
sk_malloc_throw(newDataSz + ETC_PKM_HEADER_SIZE));
etc1_pkm_format_header(newData, newWidth, newHeight);
etc1_byte* copyInto = newData;
copyInto += ETC_PKM_HEADER_SIZE;
origData += ETC_PKM_HEADER_SIZE;
etc1_uint32 origBlocksX = (origWidth >> 2);
etc1_uint32 origBlocksY = (origHeight >> 2);
etc1_uint32 newBlocksY = (newHeight >> 2);
etc1_uint32 origRowSzInBytes = origBlocksX * ETC1_ENCODED_BLOCK_SIZE;
for (etc1_uint32 j = 0; j < newBlocksY; ++j) {
const etc1_byte* rowStart = origData + ((j % origBlocksY) * origRowSzInBytes);
for(etc1_uint32 i = 0; i < newWidth; i += origWidth) {
memcpy(copyInto, rowStart, origRowSzInBytes);
copyInto += origRowSzInBytes;
}
}
return newData;
}
// This is the base class for all of the benches in this file. In general
// the ETC1 benches should all be working on the same data. Due to the
// simplicity of the PKM file, that data is the 128x128 mandrill etc1
// compressed texture repeated by some factor (currently 8 -> 1024x1024)
class ETCBitmapBenchBase : public Benchmark {
public:
ETCBitmapBenchBase() : fPKMData(loadPKM()) {
if (NULL == fPKMData) {
SkDebugf("Could not load PKM data!");
}
}
protected:
SkAutoDataUnref fPKMData;
private:
SkData* loadPKM() {
SkString pkmFilename = GetResourcePath("mandrill_128.pkm");
// Expand the data
SkAutoDataUnref fileData(SkData::NewFromFileName(pkmFilename.c_str()));
if (NULL == fileData) {
SkDebugf("Could not open the file. Did you forget to set the resourcePath?\n");
return NULL;
}
const etc1_uint32 kExpansionFactor = 8;
etc1_byte* expandedETC1 =
create_expanded_etc1_bitmap(fileData->bytes(), kExpansionFactor);
if (NULL == expandedETC1) {
SkDebugf("Error expanding ETC1 data by factor of %d\n", kExpansionFactor);
return NULL;
}
etc1_uint32 width = etc1_pkm_get_width(expandedETC1);
etc1_uint32 height = etc1_pkm_get_width(expandedETC1);
etc1_uint32 dataSz = ETC_PKM_HEADER_SIZE + etc1_get_encoded_data_size(width, height);
return SkData::NewFromMalloc(expandedETC1, dataSz);
}
typedef Benchmark INHERITED;
};
// This is the rendering benchmark. Prior to rendering the data, create a
// bitmap using the etc1 data.
class ETCBitmapBench : public ETCBitmapBenchBase {
public:
ETCBitmapBench(bool decompress, Backend backend)
: fDecompress(decompress), fBackend(backend) { }
bool isSuitableFor(Backend backend) override {
return backend == this->fBackend;
}
protected:
const char* onGetName() override {
if (kGPU_Backend == this->fBackend) {
if (this->fDecompress) {
return "etc1bitmap_render_gpu_decompressed";
} else {
return "etc1bitmap_render_gpu_compressed";
}
} else {
SkASSERT(kRaster_Backend == this->fBackend);
if (this->fDecompress) {
return "etc1bitmap_render_raster_decompressed";
} else {
return "etc1bitmap_render_raster_compressed";
}
}
}
void onPreDraw() override {
if (NULL == fPKMData) {
SkDebugf("Failed to load PKM data!\n");
return;
}
// Install pixel ref
if (!SkInstallDiscardablePixelRef(fPKMData, &(this->fBitmap))) {
SkDebugf("Could not install discardable pixel ref.\n");
return;
}
// Decompress it if necessary
if (this->fDecompress) {
this->fBitmap.lockPixels();
}
}
void onDraw(const int loops, SkCanvas* canvas) override {
for (int i = 0; i < loops; ++i) {
canvas->drawBitmap(this->fBitmap, 0, 0, NULL);
}
}
protected:
SkBitmap fBitmap;
bool decompress() const { return fDecompress; }
Backend backend() const { return fBackend; }
private:
const bool fDecompress;
const Backend fBackend;
typedef ETCBitmapBenchBase INHERITED;
};
// This benchmark is identical to the previous benchmark, but it explicitly forces
// an upload to the GPU before each draw call. We do this by notifying the bitmap
// that the pixels have changed (even though they haven't).
class ETCBitmapUploadBench : public ETCBitmapBench {
public:
ETCBitmapUploadBench(bool decompress, Backend backend)
: ETCBitmapBench(decompress, backend) { }
protected:
const char* onGetName() override {
if (kGPU_Backend == this->backend()) {
if (this->decompress()) {
return "etc1bitmap_upload_gpu_decompressed";
} else {
return "etc1bitmap_upload_gpu_compressed";
}
} else {
SkASSERT(kRaster_Backend == this->backend());
if (this->decompress()) {
return "etc1bitmap_upload_raster_decompressed";
} else {
return "etc1bitmap_upload_raster_compressed";
}
}
}
void onDraw(const int loops, SkCanvas* canvas) override {
SkPixelRef* pr = fBitmap.pixelRef();
for (int i = 0; i < loops; ++i) {
if (pr) {
pr->notifyPixelsChanged();
}
canvas->drawBitmap(this->fBitmap, 0, 0, NULL);
}
}
private:
typedef ETCBitmapBench INHERITED;
};
DEF_BENCH(return new ETCBitmapBench(false, Benchmark::kRaster_Backend);)
DEF_BENCH(return new ETCBitmapBench(true, Benchmark::kRaster_Backend);)
DEF_BENCH(return new ETCBitmapBench(false, Benchmark::kGPU_Backend);)
DEF_BENCH(return new ETCBitmapBench(true, Benchmark::kGPU_Backend);)
DEF_BENCH(return new ETCBitmapUploadBench(false, Benchmark::kRaster_Backend);)
DEF_BENCH(return new ETCBitmapUploadBench(true, Benchmark::kRaster_Backend);)
DEF_BENCH(return new ETCBitmapUploadBench(false, Benchmark::kGPU_Backend);)
DEF_BENCH(return new ETCBitmapUploadBench(true, Benchmark::kGPU_Backend);)
#endif // SK_IGNORE_ETC1_SUPPORT
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