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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkRandom.h"
#if SK_SUPPORT_GPU
#include "etc1.h"
#include "GrContext.h"
#include "GrRenderTargetContext.h"
#include "GrRenderTargetContextPriv.h"
#include "GrTextureProxy.h"
#include "effects/GrSimpleTextureEffect.h"
#include "ops/GrRectOpFactory.h"
// Basic test of Ganesh's ETC1 support
class ETC1GM : public skiagm::GM {
public:
ETC1GM() {
this->setBGColor(sk_tool_utils::color_to_565(0xFFCCCCCC));
}
protected:
SkString onShortName() override {
return SkString("etc1");
}
SkISize onISize() override {
return SkISize::Make(kTexWidth + 2*kPad, kTexHeight + 2*kPad);
}
// TODO: we should be creating an ETC1 SkData blob here and going through SkImageCacherator.
// That will require an ETC1 Codec though - so for later.
void onOnceBeforeDraw() override {
SkBitmap bm;
SkImageInfo ii = SkImageInfo::Make(kTexWidth, kTexHeight, kRGB_565_SkColorType,
kOpaque_SkAlphaType);
bm.allocPixels(ii);
bm.erase(SK_ColorBLUE, SkIRect::MakeWH(kTexWidth, kTexHeight));
for (int y = 0; y < kTexHeight; y += 4) {
for (int x = 0; x < kTexWidth; x += 4) {
bm.erase((x+y) % 8 ? SK_ColorRED : SK_ColorGREEN, SkIRect::MakeXYWH(x, y, 4, 4));
}
}
int size = etc1_get_encoded_data_size(bm.width(), bm.height());
fETC1Data.reset(size);
unsigned char* pixels = (unsigned char*) fETC1Data.get();
if (etc1_encode_image((unsigned char*) bm.getAddr16(0, 0),
bm.width(), bm.height(), 2, bm.rowBytes(), pixels)) {
fETC1Data.reset();
}
}
void onDraw(SkCanvas* canvas) override {
GrRenderTargetContext* renderTargetContext =
canvas->internal_private_accessTopLayerRenderTargetContext();
if (!renderTargetContext) {
skiagm::GM::DrawGpuOnlyMessage(canvas);
return;
}
GrContext* context = canvas->getGrContext();
if (!context) {
return;
}
GrSurfaceDesc desc;
desc.fConfig = kETC1_GrPixelConfig;
desc.fWidth = kTexWidth;
desc.fHeight = kTexHeight;
sk_sp<GrTextureProxy> proxy = GrSurfaceProxy::MakeDeferred(context->resourceProvider(),
desc, SkBudgeted::kYes,
fETC1Data.get(), 0);
if (!proxy) {
return;
}
const SkMatrix trans = SkMatrix::MakeTrans(-kPad, -kPad);
sk_sp<GrFragmentProcessor> fp = GrSimpleTextureEffect::Make(context->resourceProvider(),
std::move(proxy),
nullptr, trans);
GrPaint grPaint;
grPaint.setXPFactory(GrPorterDuffXPFactory::Get(SkBlendMode::kSrc));
grPaint.addColorFragmentProcessor(std::move(fp));
SkRect rect = SkRect::MakeXYWH(kPad, kPad, kTexWidth, kTexHeight);
std::unique_ptr<GrMeshDrawOp> op(GrRectOpFactory::MakeNonAAFill(
GrColor_WHITE, SkMatrix::I(), rect, nullptr, nullptr));
renderTargetContext->priv().testingOnly_addMeshDrawOp(std::move(grPaint), GrAAType::kNone,
std::move(op));
}
private:
static const int kPad = 8;
static const int kTexWidth = 16;
static const int kTexHeight = 20;
SkAutoTMalloc<char> fETC1Data;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new ETC1GM;)
#endif
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