253 lines
9.5 KiB
C++
253 lines
9.5 KiB
C++
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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// This test only works with the GL backend.
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#include "gm/gm.h"
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#ifdef SK_GL
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#include "include/core/SkBitmap.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkImageInfo.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPoint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkShader.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTileMode.h"
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#include "include/core/SkTypes.h"
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#include "include/effects/SkGradientShader.h"
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#include "include/gpu/GrBackendSurface.h"
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#include "include/gpu/GrDirectContext.h"
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#include "include/gpu/GrTypes.h"
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#include "src/core/SkAutoPixmapStorage.h"
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#include "src/gpu/GrDirectContextPriv.h"
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#include "src/gpu/GrGpu.h"
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#include "src/gpu/gl/GrGLCaps.h"
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#include "src/gpu/gl/GrGLDefines.h"
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#include <algorithm>
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#include <cstdint>
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#include <memory>
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namespace skiagm {
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class RectangleTexture : public GM {
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public:
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RectangleTexture() {
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this->setBGColor(0xFFFFFFFF);
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}
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private:
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enum class ImageType {
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kGradientCircle,
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k2x2
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};
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SkString onShortName() override {
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return SkString("rectangle_texture");
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}
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SkISize onISize() override { return SkISize::Make(1180, 710); }
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SkBitmap makeImagePixels(int size, ImageType type) {
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auto ii = SkImageInfo::Make(size, size, kRGBA_8888_SkColorType, kOpaque_SkAlphaType);
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switch (type) {
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case ImageType::kGradientCircle: {
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SkBitmap bmp;
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bmp.allocPixels(ii);
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SkPaint paint;
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SkCanvas canvas(bmp);
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SkPoint pts[] = {{0, 0}, {0, SkIntToScalar(size)}};
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SkColor colors0[] = {0xFF1060B0, 0xFF102030};
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paint.setShader(
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SkGradientShader::MakeLinear(pts, colors0, nullptr, 2, SkTileMode::kClamp));
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canvas.drawPaint(paint);
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SkColor colors1[] = {0xFFA07010, 0xFFA02080};
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paint.setAntiAlias(true);
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paint.setShader(
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SkGradientShader::MakeLinear(pts, colors1, nullptr, 2, SkTileMode::kClamp));
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canvas.drawCircle(size/2.f, size/2.f, 2.f*size/5, paint);
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return bmp;
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}
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case ImageType::k2x2: {
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SkBitmap bmp;
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bmp.allocPixels(ii);
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*bmp.getAddr32(0, 0) = 0xFF0000FF;
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*bmp.getAddr32(1, 0) = 0xFF00FF00;
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*bmp.getAddr32(0, 1) = 0xFFFF0000;
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*bmp.getAddr32(1, 1) = 0xFFFFFFFF;
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return bmp;
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}
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}
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SkUNREACHABLE;
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}
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sk_sp<SkImage> createRectangleTextureImg(GrDirectContext* dContext, GrSurfaceOrigin origin,
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const SkBitmap content) {
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SkASSERT(content.colorType() == kRGBA_8888_SkColorType);
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auto format = GrBackendFormat::MakeGL(GR_GL_RGBA8, GR_GL_TEXTURE_RECTANGLE);
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auto bet = dContext->createBackendTexture(content.width(), content.height(), format,
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GrMipmapped::kNo, GrRenderable::kNo);
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if (!bet.isValid()) {
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return nullptr;
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}
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if (!dContext->updateBackendTexture(bet, content.pixmap(), origin, nullptr, nullptr)) {
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dContext->deleteBackendTexture(bet);
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}
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return SkImage::MakeFromAdoptedTexture(dContext, bet, origin, kRGBA_8888_SkColorType);
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}
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DrawResult onGpuSetup(GrDirectContext* context, SkString* errorMsg) override {
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if (!context || context->abandoned()) {
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return DrawResult::kSkip;
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}
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if (context->backend() != GrBackendApi::kOpenGL_GrBackend ||
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!static_cast<const GrGLCaps*>(context->priv().caps())->rectangleTextureSupport()) {
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*errorMsg = "This GM requires an OpenGL context that supports texture rectangles.";
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return DrawResult::kSkip;
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}
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auto gradCircle = this->makeImagePixels(50, ImageType::kGradientCircle);
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fGradImgs[0] = this->createRectangleTextureImg(context, kTopLeft_GrSurfaceOrigin,
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gradCircle);
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fGradImgs[1] = this->createRectangleTextureImg(context, kBottomLeft_GrSurfaceOrigin,
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gradCircle);
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SkASSERT(SkToBool(fGradImgs[0]) == SkToBool(fGradImgs[1]));
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if (!fGradImgs[0]) {
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*errorMsg = "Could not create gradient rectangle texture images.";
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return DrawResult::kFail;
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}
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fSmallImg = this->createRectangleTextureImg(context, kTopLeft_GrSurfaceOrigin,
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this->makeImagePixels(2, ImageType::k2x2));
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if (!fSmallImg) {
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*errorMsg = "Could not create 2x2 rectangle texture image.";
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return DrawResult::kFail;
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}
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return DrawResult::kOk;
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}
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void onGpuTeardown() override {
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fGradImgs[0] = fGradImgs[1] = nullptr;
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fSmallImg = nullptr;
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}
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DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override {
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SkASSERT(fGradImgs[0] && fGradImgs[1] && fSmallImg);
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static constexpr SkScalar kPad = 5.f;
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const SkSamplingOptions kSamplings[] = {
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SkSamplingOptions(SkFilterMode::kNearest),
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SkSamplingOptions(SkFilterMode::kLinear),
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SkSamplingOptions(SkFilterMode::kLinear, SkMipmapMode::kLinear),
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SkSamplingOptions(SkCubicResampler::Mitchell()),
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};
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constexpr SkScalar kScales[] = {1.0f, 1.2f, 0.75f};
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canvas->translate(kPad, kPad);
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for (size_t i = 0; i < kNumGradImages; ++i) {
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auto img = fGradImgs[i];
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int w = img->width();
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int h = img->height();
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for (auto scale : kScales) {
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canvas->save();
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canvas->scale(scale, scale);
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for (auto s : kSamplings) {
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// drawImage
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canvas->drawImage(img, 0, 0, s);
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canvas->translate(w + kPad, 0);
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// clamp/clamp shader
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SkPaint clampPaint;
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clampPaint.setShader(fGradImgs[i]->makeShader(s));
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canvas->drawRect(SkRect::MakeWH(1.5f*w, 1.5f*h), clampPaint);
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canvas->translate(1.5f*w + kPad, 0);
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// repeat/mirror shader
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SkPaint repeatPaint;
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repeatPaint.setShader(fGradImgs[i]->makeShader(SkTileMode::kRepeat,
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SkTileMode::kMirror,
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s));
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canvas->drawRect(SkRect::MakeWH(1.5f*w, 1.5f*h), repeatPaint);
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canvas->translate(1.5f*w + kPad, 0);
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// drawImageRect with kStrict
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auto srcRect = SkRect::MakeXYWH(.25f*w, .25f*h, .50f*w, .50f*h);
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auto dstRect = SkRect::MakeXYWH( 0, 0, .50f*w, .50f*h);
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canvas->drawImageRect(fGradImgs[i], srcRect, dstRect, s, nullptr,
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SkCanvas::kStrict_SrcRectConstraint);
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canvas->translate(.5f*w + kPad, 0);
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}
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canvas->restore();
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canvas->translate(0, kPad + 1.5f*h*scale);
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}
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}
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static constexpr SkScalar kOutset = 25.f;
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canvas->translate(kOutset, kOutset);
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auto dstRect = SkRect::Make(fSmallImg->dimensions()).makeOutset(kOutset, kOutset);
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const SkSamplingOptions gSamplings[] = {
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SkSamplingOptions(SkFilterMode::kNearest),
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SkSamplingOptions(SkFilterMode::kLinear),
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SkSamplingOptions(SkFilterMode::kLinear, SkMipmapMode::kLinear),
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SkSamplingOptions(SkCubicResampler::Mitchell()),
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};
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for (const auto& sampling : gSamplings) {
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if (!sampling.useCubic && sampling.mipmap != SkMipmapMode::kNone) {
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// Medium is the same as Low for upscaling.
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continue;
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}
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canvas->save();
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for (int ty = 0; ty < kSkTileModeCount; ++ty) {
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canvas->save();
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for (int tx = 0; tx < kSkTileModeCount; ++tx) {
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SkMatrix lm;
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lm.setRotate(45.f, 1, 1);
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lm.postScale(6.5f, 6.5f);
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SkPaint paint;
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paint.setShader(fSmallImg->makeShader(static_cast<SkTileMode>(tx),
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static_cast<SkTileMode>(ty),
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sampling,
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lm));
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canvas->drawRect(dstRect, paint);
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canvas->translate(dstRect.width() + kPad, 0);
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}
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canvas->restore();
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canvas->translate(0, dstRect.height() + kPad);
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}
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canvas->restore();
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canvas->translate((dstRect.width() + kPad)*kSkTileModeCount, 0);
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}
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return DrawResult::kOk;
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}
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private:
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static const int kNumGradImages = 2;
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sk_sp<SkImage> fGradImgs[kNumGradImages];
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sk_sp<SkImage> fSmallImg;
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using INHERITED = GM;
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};
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DEF_GM(return new RectangleTexture;)
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} // namespace skiagm
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#endif
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