GrAtlasTools.cpp File Reference

#include "tools/gpu/ganesh/GrAtlasTools.h"
#include "include/core/SkAlphaType.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkColorSpace.h"
#include "include/core/SkColorType.h"
#include "include/core/SkDataTable.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkStream.h"
#include "include/core/SkString.h"
#include "include/encode/SkPngEncoder.h"
#include "include/gpu/GrDirectContext.h"
#include "include/private/base/SkDebug.h"
#include "src/gpu/ganesh/GrDirectContextPriv.h"
#include "src/gpu/ganesh/GrSurfaceProxy.h"
#include "src/gpu/ganesh/GrSurfaceProxyView.h"
#include "src/gpu/ganesh/SurfaceContext.h"
#include <cstdio>
#include <utility>

Go to the source code of this file.

Functions
static bool	save_pixels (GrDirectContext *dContext, GrSurfaceProxyView view, GrColorType colorType, const char *filename)

Function Documentation

save_pixels()

static bool save_pixels ( GrDirectContext *  dContext, GrSurfaceProxyView  view, GrColorType  colorType, const char *  filename  )

static

Write the contents of the surface proxy to a PNG. Returns true if successful.

Parameters

filename

Full path to desired file

Definition at line 33 of file GrAtlasTools.cpp.

                                              {
    if (!view.proxy()) {
        return false;
    }
 
    auto ii = SkImageInfo::Make(
            view.proxy()->dimensions(), kRGBA_8888_SkColorType, kPremul_SkAlphaType);
    SkBitmap bm;
    if (!bm.tryAllocPixels(ii)) {
        return false;
    }
 
    auto sContext =
            dContext->priv().makeSC(std::move(view), {colorType, kUnknown_SkAlphaType, nullptr});
    if (!sContext || !sContext->asTextureProxy()) {
        return false;
    }
 
    bool result = sContext->readPixels(dContext, bm.pixmap(), {0, 0});
    if (!result) {
        SkDebugf("------ failed to read pixels for %s\n", filename);
        return false;
    }
 
    // remove any previous version of this file
    remove(filename);
 
    SkFILEWStream file(filename);
    if (!file.isValid()) {
        SkDebugf("------ failed to create file: %s\n", filename);
        remove(filename);  // remove any partial file
        return false;
    }
 
    if (!SkPngEncoder::Encode(&file, bm.pixmap(), {})) {
        SkDebugf("------ failed to encode %s\n", filename);
        remove(filename);  // remove any partial file
        return false;
    }
 
    return true;
}