Index: gm/gamma.cpp |
diff --git a/gm/gamma.cpp b/gm/gamma.cpp |
deleted file mode 100644 |
index c874db6969ac8a52a73460ff9c7d392e08c6c97f..0000000000000000000000000000000000000000 |
--- a/gm/gamma.cpp |
+++ /dev/null |
@@ -1,166 +0,0 @@ |
-/* |
- * Copyright 2015 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 "Resources.h" |
-#include "SkGradientShader.h" |
- |
-DEF_SIMPLE_GM(gamma, canvas, 500, 200) { |
- SkPaint p; |
- const SkScalar sz = 50.0f; |
- const int szInt = SkScalarTruncToInt(sz); |
- const SkScalar tx = sz + 5.0f; |
- const SkRect r = SkRect::MakeXYWH(0, 0, sz, sz); |
- SkShader::TileMode rpt = SkShader::kRepeat_TileMode; |
- |
- SkBitmap ditherBmp; |
- ditherBmp.allocN32Pixels(2, 2); |
- SkPMColor* pixels = reinterpret_cast<SkPMColor*>(ditherBmp.getPixels()); |
- pixels[0] = pixels[3] = SkPackARGB32(0xFF, 0xFF, 0xFF, 0xFF); |
- pixels[1] = pixels[2] = SkPackARGB32(0xFF, 0, 0, 0); |
- |
- SkBitmap linearGreyBmp; |
- SkImageInfo linearGreyInfo = SkImageInfo::MakeN32(szInt, szInt, kOpaque_SkAlphaType, |
- kLinear_SkColorProfileType); |
- linearGreyBmp.allocPixels(linearGreyInfo); |
- linearGreyBmp.eraseARGB(0xFF, 0x7F, 0x7F, 0x7F); |
- |
- SkBitmap srgbGreyBmp; |
- SkImageInfo srgbGreyInfo = SkImageInfo::MakeN32(szInt, szInt, kOpaque_SkAlphaType, |
- kSRGB_SkColorProfileType); |
- srgbGreyBmp.allocPixels(srgbGreyInfo); |
- srgbGreyBmp.eraseARGB(0xFF, 0xBC, 0xBC, 0xBC); |
- |
- SkPaint textPaint; |
- textPaint.setColor(SK_ColorWHITE); |
- |
- // Helpers: |
- auto advance = [&]() { |
- canvas->translate(tx, 0); |
- p.reset(); |
- }; |
- |
- auto nextRect = [&](const char* label, const char* label2) { |
- canvas->drawRect(r, p); |
- canvas->drawText(label, strlen(label), 0, sz + textPaint.getFontSpacing(), textPaint); |
- if (label2) { |
- canvas->drawText(label2, strlen(label2), 0, sz + 2 * textPaint.getFontSpacing(), |
- textPaint); |
- } |
- advance(); |
- }; |
- |
- auto nextBitmap = [&](const SkBitmap& bmp, const char* label) { |
- canvas->drawBitmap(bmp, 0, 0); |
- canvas->drawText(label, strlen(label), 0, sz + textPaint.getFontSpacing(), textPaint); |
- advance(); |
- }; |
- |
- auto nextXferRect = [&](SkColor srcColor, SkXfermode::Mode mode, SkColor dstColor) { |
- p.setColor(dstColor); |
- canvas->drawRect(r, p); |
- p.setColor(srcColor); |
- p.setXfermodeMode(mode); |
- canvas->drawRect(r, p); |
- |
- SkString srcText = SkStringPrintf("%08X", srcColor); |
- SkString dstText = SkStringPrintf("%08X", dstColor); |
- canvas->drawText(srcText.c_str(), srcText.size(), 0, sz + textPaint.getFontSpacing(), |
- textPaint); |
- const char* modeName = SkXfermode::ModeName(mode); |
- canvas->drawText(modeName, strlen(modeName), 0, sz + 2 * textPaint.getFontSpacing(), |
- textPaint); |
- canvas->drawText(dstText.c_str(), dstText.size(), 0, sz + 3 * textPaint.getFontSpacing(), |
- textPaint); |
- advance(); |
- }; |
- |
- // Necessary for certain Xfermodes to work: |
- canvas->clear(SK_ColorTRANSPARENT); |
- |
- // *Everything* should be perceptually 50% grey. Only the first rectangle |
- // is guaranteed to draw that way, though. |
- canvas->save(); |
- |
- // Black/white dither, pixel perfect. This is ground truth. |
- p.setShader(SkShader::CreateBitmapShader( |
- ditherBmp, rpt, rpt))->unref(); |
- p.setFilterQuality(SkFilterQuality::kNone_SkFilterQuality); |
- nextRect("Dither", "Reference"); |
- |
- // Black/white dither, sampled at half-texel offset. Tests bilerp. |
- // NOTE: We need to apply a non-identity scale and/or rotation to trick |
- // the raster pipeline into *not* snapping to nearest. |
- SkMatrix offsetMatrix = SkMatrix::Concat( |
- SkMatrix::MakeScale(-1.0f), SkMatrix::MakeTrans(0.5f, 0.0f)); |
- p.setShader(SkShader::CreateBitmapShader( |
- ditherBmp, rpt, rpt, &offsetMatrix))->unref(); |
- p.setFilterQuality(SkFilterQuality::kMedium_SkFilterQuality); |
- nextRect("Dither", "Bilerp"); |
- |
- // Black/white dither, scaled down by 2x. Tests minification. |
- SkMatrix scaleMatrix = SkMatrix::MakeScale(0.5f); |
- p.setShader(SkShader::CreateBitmapShader( |
- ditherBmp, rpt, rpt, &scaleMatrix))->unref(); |
- p.setFilterQuality(SkFilterQuality::kMedium_SkFilterQuality); |
- nextRect("Dither", "Scale"); |
- |
- // 50% grey via paint color. |
- p.setColor(0xff7f7f7f); |
- nextRect("Color", 0); |
- |
- // Black -> White gradient, scaled to sample just the middle. |
- // Tests gradient interpolation. |
- SkPoint points[2] = { |
- SkPoint::Make(0 - (sz * 10), 0), |
- SkPoint::Make(sz + (sz * 10), 0) |
- }; |
- SkColor colors[2] = { SK_ColorBLACK, SK_ColorWHITE }; |
- p.setShader(SkGradientShader::CreateLinear( |
- points, colors, nullptr, 2, SkShader::kClamp_TileMode))->unref(); |
- nextRect("Gradient", 0); |
- |
- // 50% grey from linear bitmap, with drawBitmap |
- nextBitmap(linearGreyBmp, "Lnr BMP"); |
- |
- // 50% grey from sRGB bitmap, with drawBitmap |
- nextBitmap(srgbGreyBmp, "sRGB BMP"); |
- |
- // Bitmap wrapped in a shader (linear): |
- p.setShader(SkShader::CreateBitmapShader(linearGreyBmp, rpt, rpt))->unref(); |
- p.setFilterQuality(SkFilterQuality::kMedium_SkFilterQuality); |
- nextRect("Lnr BMP", "Shader"); |
- |
- // Bitmap wrapped in a shader (sRGB): |
- p.setShader(SkShader::CreateBitmapShader(srgbGreyBmp, rpt, rpt))->unref(); |
- p.setFilterQuality(SkFilterQuality::kMedium_SkFilterQuality); |
- nextRect("sRGB BMP", "Shader"); |
- |
- // Carriage return. |
- canvas->restore(); |
- canvas->translate(0, 2 * sz); |
- |
- const U8CPU sqrtHalf = 0xB4; |
- const SkColor sqrtHalfAlpha = SkColorSetARGB(sqrtHalf, 0, 0, 0); |
- const SkColor sqrtHalfWhite = SkColorSetARGB(0xFF, sqrtHalf, sqrtHalf, sqrtHalf); |
- |
- // Xfermode tests. |
- nextXferRect(0x7fffffff, SkXfermode::kSrcOver_Mode, SK_ColorBLACK); |
- nextXferRect(0x7f000000, SkXfermode::kSrcOver_Mode, SK_ColorWHITE); |
- |
- nextXferRect(SK_ColorBLACK, SkXfermode::kDstOver_Mode, 0x7fffffff); |
- nextXferRect(SK_ColorWHITE, SkXfermode::kSrcIn_Mode, 0x7fff00ff); |
- nextXferRect(0x7fff00ff, SkXfermode::kDstIn_Mode, SK_ColorWHITE); |
- nextXferRect(sqrtHalfWhite, SkXfermode::kSrcIn_Mode, sqrtHalfAlpha); |
- nextXferRect(sqrtHalfAlpha, SkXfermode::kDstIn_Mode, sqrtHalfWhite); |
- |
- nextXferRect(0xff3f3f3f, SkXfermode::kPlus_Mode, 0xff3f3f3f); |
- nextXferRect(sqrtHalfWhite, SkXfermode::kModulate_Mode, sqrtHalfWhite); |
- |
- canvas->restore(); |
-} |