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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.
*/
// This test only works with the GPU backend.
#include "gm.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#include "GrTest.h"
#include "effects/GrTextureDomain.h"
#include "SkBitmap.h"
#include "SkGr.h"
#include "SkGradientShader.h"
namespace skiagm {
/**
* This GM directly exercises GrTextureDomainEffect.
*/
class TextureDomainEffect : public GM {
public:
TextureDomainEffect() {
this->setBGColor(0xFFFFFFFF);
}
protected:
virtual SkString onShortName() SK_OVERRIDE {
return SkString("texture_domain_effect");
}
virtual SkISize onISize() SK_OVERRIDE {
const SkScalar canvasWidth = kDrawPad +
(kTargetWidth + 2 * kDrawPad) * GrTextureDomain::kModeCount +
kTestPad * GrTextureDomain::kModeCount;
return SkISize::Make(SkScalarCeilToInt(canvasWidth), 800);
}
virtual uint32_t onGetFlags() const SK_OVERRIDE {
// This is a GPU-specific GM.
return kGPUOnly_Flag;
}
virtual void onOnceBeforeDraw() SK_OVERRIDE {
fBmp.allocN32Pixels(kTargetWidth, kTargetHeight);
SkCanvas canvas(fBmp);
canvas.clear(0x00000000);
SkPaint paint;
SkColor colors1[] = { SK_ColorCYAN, SK_ColorLTGRAY, SK_ColorGRAY };
paint.setShader(SkGradientShader::CreateSweep(65.f, 75.f, colors1,
NULL, SK_ARRAY_COUNT(colors1)))->unref();
canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f,
fBmp.width() + 10.f, fBmp.height() + 10.f), paint);
SkColor colors2[] = { SK_ColorMAGENTA, SK_ColorLTGRAY, SK_ColorYELLOW };
paint.setShader(SkGradientShader::CreateSweep(45.f, 55.f, colors2, NULL,
SK_ARRAY_COUNT(colors2)))->unref();
paint.setXfermodeMode(SkXfermode::kDarken_Mode);
canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f,
fBmp.width() + 10.f, fBmp.height() + 10.f), paint);
SkColor colors3[] = { SK_ColorBLUE, SK_ColorLTGRAY, SK_ColorGREEN };
paint.setShader(SkGradientShader::CreateSweep(25.f, 35.f, colors3, NULL,
SK_ARRAY_COUNT(colors3)))->unref();
paint.setXfermodeMode(SkXfermode::kLighten_Mode);
canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f,
fBmp.width() + 10.f, fBmp.height() + 10.f), paint);
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
GrRenderTarget* rt = canvas->internal_private_accessTopLayerRenderTarget();
if (NULL == rt) {
return;
}
GrContext* context = rt->getContext();
if (NULL == context) {
return;
}
GrTestTarget tt;
context->getTestTarget(&tt);
if (NULL == tt.target()) {
SkDEBUGFAIL("Couldn't get Gr test target.");
return;
}
GrDrawState* drawState = tt.target()->drawState();
GrTexture* texture = GrLockAndRefCachedBitmapTexture(context, fBmp, NULL);
if (NULL == texture) {
return;
}
SkTArray<SkMatrix> textureMatrices;
textureMatrices.push_back().setIDiv(texture->width(), texture->height());
textureMatrices.push_back() = textureMatrices[0];
textureMatrices.back().postScale(1.5f, 0.85f);
textureMatrices.push_back() = textureMatrices[0];
textureMatrices.back().preRotate(45.f, texture->width() / 2.f, texture->height() / 2.f);
const SkIRect texelDomains[] = {
SkIRect::MakeWH(fBmp.width(), fBmp.height()),
SkIRect::MakeXYWH(fBmp.width() / 4,
fBmp.height() / 4,
fBmp.width() / 2,
fBmp.height() / 2),
};
SkRect renderRect = SkRect::MakeWH(SkIntToScalar(fBmp.width()),
SkIntToScalar(fBmp.height()));
renderRect.outset(kDrawPad, kDrawPad);
SkScalar y = kDrawPad + kTestPad;
for (int tm = 0; tm < textureMatrices.count(); ++tm) {
for (size_t d = 0; d < SK_ARRAY_COUNT(texelDomains); ++d) {
SkScalar x = kDrawPad + kTestPad;
for (int m = 0; m < GrTextureDomain::kModeCount; ++m) {
GrTextureDomain::Mode mode = (GrTextureDomain::Mode) m;
SkAutoTUnref<GrEffect> effect(
GrTextureDomainEffect::Create(texture, textureMatrices[tm],
GrTextureDomain::MakeTexelDomain(texture,
texelDomains[d]),
mode, GrTextureParams::kNone_FilterMode));
if (!effect) {
continue;
}
SkMatrix viewMatrix;
viewMatrix.setTranslate(x, y);
drawState->reset(viewMatrix);
drawState->setRenderTarget(rt);
drawState->setColor(0xffffffff);
drawState->addColorEffect(effect, 1);
tt.target()->drawSimpleRect(renderRect);
x += renderRect.width() + kTestPad;
}
y += renderRect.height() + kTestPad;
}
}
GrUnlockAndUnrefCachedBitmapTexture(texture);
}
private:
static const SkScalar kDrawPad;
static const SkScalar kTestPad;
static const int kTargetWidth = 100;
static const int kTargetHeight = 100;
SkBitmap fBmp;
typedef GM INHERITED;
};
// Windows builds did not like SkScalar initialization in class :(
const SkScalar TextureDomainEffect::kDrawPad = 10.f;
const SkScalar TextureDomainEffect::kTestPad = 10.f;
DEF_GM( return SkNEW(TextureDomainEffect); )
}
#endif
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