skia2/gm/swizzle.cpp

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/*
* Copyright 2019 Google LLC.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkRect.h"
#include "include/core/SkTypes.h"
#include "src/gpu/GrBitmapTextureMaker.h"
#include "src/gpu/GrDirectContextPriv.h"
#include "src/gpu/GrFragmentProcessor.h"
#include "src/gpu/GrRenderTargetContext.h"
#include "src/gpu/GrRenderTargetContextPriv.h"
#include "src/gpu/ops/GrFillRectOp.h"
#include "tools/Resources.h"
#include "tools/ToolUtils.h"
DEF_SIMPLE_GPU_GM(swizzle, ctx, rtCtx, canvas, 512, 512) {
SkRect bounds = SkRect::MakeIWH(512, 512);
SkBitmap bmp;
GetResourceAsBitmap("images/mandrill_512_q075.jpg", &bmp);
GrBitmapTextureMaker maker(ctx, bmp, GrImageTexGenPolicy::kDraw);
auto view = maker.view(GrMipmapped::kNo);
if (!view) {
return;
}
std::unique_ptr<GrFragmentProcessor> imgFP =
GrTextureEffect::Make(std::move(view), bmp.alphaType(), SkMatrix());
auto fp = GrFragmentProcessor::SwizzleOutput(std::move(imgFP), GrSwizzle("grb1"));
GrPaint grPaint;
grPaint.setColorFragmentProcessor(std::move(fp));
rtCtx->priv().testingOnly_addDrawOp(
GrFillRectOp::MakeNonAARect(ctx, std::move(grPaint), SkMatrix(), bounds));
}