gm/deferredtextureimage.cpp - Issue 2083393002: Revert of Store mipmap levels in deferred texture image

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Issue 2083393002: Revert of Store mipmap levels in deferred texture image (Closed) Base URL: https://skia.googlesource.com/skia.git@pipe-mipmap-levels-to-creation

Patch Set: Created 4 years, 6 months ago

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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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