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| 1 /* |
| 2 * Copyright 2016 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 #include <vector> |
| 8 |
| 9 #include "gm.h" |
| 10 #include "GrContext.h" |
| 11 #include "SkMipMap.h" |
| 12 #include "Resources.h" |
| 13 |
| 14 #if SK_SUPPORT_GPU |
| 15 |
| 16 class DeferredTextureImage_Medium : public skiagm::GM { |
| 17 protected: |
| 18 SkString onShortName() override { |
| 19 return SkString("deferredtextureimage_medium"); |
| 20 } |
| 21 |
| 22 SkISize onISize() override { |
| 23 return SkISize::Make(512 + 512 + 30, 1110); |
| 24 } |
| 25 |
| 26 void onDraw(SkCanvas* canvas) override { |
| 27 GrContext* context = canvas->getGrContext(); |
| 28 if (!context) { |
| 29 skiagm::GM::DrawGpuOnlyMessage(canvas); |
| 30 return; |
| 31 } |
| 32 |
| 33 SkPaint paint; |
| 34 paint.setFilterQuality(kMedium_SkFilterQuality); |
| 35 |
| 36 int mipLevelCount = SkMipMap::ComputeLevelCount(512, 512); |
| 37 |
| 38 // create the deferred texture image |
| 39 SkImage::DeferredTextureImageUsageParams params[1]; |
| 40 // These should cause mipmaps to be generated |
| 41 params[0].fMatrix = SkMatrix::MakeScale(0.25f, 0.25f); |
| 42 params[0].fQuality = kMedium_SkFilterQuality; |
| 43 size_t requiredMemoryInBytes = fDecodedImage->getDeferredTextureImageDat
a( |
| 44 *context->threadSafeProxy(), params, 1, nullptr, SkSourceGammaTreatm
ent::kRespect); |
| 45 if (requiredMemoryInBytes == 0) { |
| 46 SkDebugf("\nCould not create DeferredTextureImageData.\n"); |
| 47 return; |
| 48 } |
| 49 |
| 50 std::vector<uint8_t> memory; |
| 51 memory.resize(requiredMemoryInBytes); |
| 52 fDecodedImage->getDeferredTextureImageData( |
| 53 *context->threadSafeProxy(), params, 1, memory.data(), |
| 54 SkSourceGammaTreatment::kRespect); |
| 55 sk_sp<SkImage> uploadedImage = SkImage::MakeFromDeferredTextureImageData
( |
| 56 context, memory.data(), SkBudgeted::kNo); |
| 57 |
| 58 // draw a column using deferred texture images |
| 59 SkScalar offsetHeight = 10.f; |
| 60 // handle base mipmap level |
| 61 canvas->save(); |
| 62 canvas->translate(10.f, offsetHeight); |
| 63 canvas->drawImage(uploadedImage, 0, 0, &paint); |
| 64 canvas->restore(); |
| 65 offsetHeight += 512 + 10; |
| 66 // handle generated mipmap levels |
| 67 for (int i = 0; i < mipLevelCount; i++) { |
| 68 SkISize mipSize = SkMipMap::ComputeLevelSize(512, 512, i); |
| 69 canvas->save(); |
| 70 canvas->translate(10.f, offsetHeight); |
| 71 canvas->scale(mipSize.width() / 512.f, mipSize.height() / 512.f); |
| 72 canvas->drawImage(uploadedImage, 0, 0, &paint); |
| 73 canvas->restore(); |
| 74 offsetHeight += mipSize.height() + 10; |
| 75 } |
| 76 |
| 77 // draw a column using SkImage |
| 78 offsetHeight = 10; |
| 79 // handle base mipmap level |
| 80 canvas->save(); |
| 81 canvas->translate(512.f + 20.f, offsetHeight); |
| 82 canvas->drawImage(fDecodedImage, 0, 0, &paint); |
| 83 canvas->restore(); |
| 84 offsetHeight += 512 + 10; |
| 85 // handle generated mipmap levels |
| 86 for (int i = 0; i < mipLevelCount; i++) { |
| 87 SkISize mipSize = SkMipMap::ComputeLevelSize(512, 512, i); |
| 88 canvas->save(); |
| 89 canvas->translate(512.f + 20.f, offsetHeight); |
| 90 canvas->scale(mipSize.width() / 512.f, mipSize.height() / 512.f); |
| 91 canvas->drawImage(fDecodedImage, 0, 0, &paint); |
| 92 canvas->restore(); |
| 93 offsetHeight += mipSize.height() + 10; |
| 94 } |
| 95 } |
| 96 |
| 97 private: |
| 98 |
| 99 void onOnceBeforeDraw() override { |
| 100 SkBitmap bitmap; |
| 101 if (!GetResourceAsBitmap("mandrill_512.png", &bitmap)) { |
| 102 bitmap.allocN32Pixels(1, 1); |
| 103 bitmap.eraseARGB(255, 255, 0, 0); // red == bad |
| 104 } |
| 105 fDecodedImage = SkImage::MakeFromBitmap(bitmap); |
| 106 } |
| 107 |
| 108 sk_sp<SkImage> fDecodedImage; |
| 109 |
| 110 typedef skiagm::GM INHERITED; |
| 111 }; |
| 112 |
| 113 ////////////////////////////////////////////////////////////////////////////// |
| 114 |
| 115 DEF_GM( return new DeferredTextureImage_Medium; ) |
| 116 |
| 117 #endif |
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