diff options
Diffstat (limited to 'gm/xfermodes.cpp')
| -rw-r--r-- | gm/xfermodes.cpp | 255 |
1 files changed, 186 insertions, 69 deletions
diff --git a/gm/xfermodes.cpp b/gm/xfermodes.cpp index bc1bc7ff73..fa4461712d 100644 --- a/gm/xfermodes.cpp +++ b/gm/xfermodes.cpp @@ -10,7 +10,69 @@ #include "SkShader.h" #include "SkXfermode.h" -namespace skiagm { +enum SrcType { + //! A WxH image with a rectangle in the lower right. + kRectangleImage_SrcType = 0x01, + //! kRectangleImage_SrcType with an alpha of 34.5%. + kRectangleImageWithAlpha_SrcType = 0x02, + //! kRectnagleImageWithAlpha_SrcType scaled down by half. + kSmallRectangleImageWithAlpha_SrcType = 0x04, + //! kRectangleImage_SrcType drawn directly instead in an image. + kRectangle_SrcType = 0x08, + //! Two rectangles, first on the right half, second on the bottom half. + kQuarterClear_SrcType = 0x10, + //! kQuarterClear_SrcType in a layer. + kQuarterClearInLayer_SrcType = 0x20, + //! A W/2xH/2 transparent image. + kSmallTransparentImage_SrcType = 0x40, + //! kRectangleImage_SrcType drawn directly with a mask. + kRectangleWithMask_SrcType = 0x80, + + kAll_SrcType = 0xFF, //!< All the source types. + kBasic_SrcType = 0x03, //!< Just basic source types. +}; + +const struct { + SkXfermode::Mode fMode; + const char* fLabel; + int fSourceTypeMask; // The source types to use this + // mode with. See draw_mode for + // an explanation of each type. + // PDF has to play some tricks + // to support the base modes, + // test those more extensively. +} gModes[] = { + { SkXfermode::kClear_Mode, "Clear", kAll_SrcType }, + { SkXfermode::kSrc_Mode, "Src", kAll_SrcType }, + { SkXfermode::kDst_Mode, "Dst", kAll_SrcType }, + { SkXfermode::kSrcOver_Mode, "SrcOver", kAll_SrcType }, + { SkXfermode::kDstOver_Mode, "DstOver", kAll_SrcType }, + { SkXfermode::kSrcIn_Mode, "SrcIn", kAll_SrcType }, + { SkXfermode::kDstIn_Mode, "DstIn", kAll_SrcType }, + { SkXfermode::kSrcOut_Mode, "SrcOut", kAll_SrcType }, + { SkXfermode::kDstOut_Mode, "DstOut", kAll_SrcType }, + { SkXfermode::kSrcATop_Mode, "SrcATop", kAll_SrcType }, + { SkXfermode::kDstATop_Mode, "DstATop", kAll_SrcType }, + + { SkXfermode::kXor_Mode, "Xor", kBasic_SrcType }, + { SkXfermode::kPlus_Mode, "Plus", kBasic_SrcType }, + { SkXfermode::kModulate_Mode, "Modulate", kAll_SrcType }, + { SkXfermode::kScreen_Mode, "Screen", kBasic_SrcType }, + { SkXfermode::kOverlay_Mode, "Overlay", kBasic_SrcType }, + { SkXfermode::kDarken_Mode, "Darken", kBasic_SrcType }, + { SkXfermode::kLighten_Mode, "Lighten", kBasic_SrcType }, + { SkXfermode::kColorDodge_Mode, "ColorDodge", kBasic_SrcType }, + { SkXfermode::kColorBurn_Mode, "ColorBurn", kBasic_SrcType }, + { SkXfermode::kHardLight_Mode, "HardLight", kBasic_SrcType }, + { SkXfermode::kSoftLight_Mode, "SoftLight", kBasic_SrcType }, + { SkXfermode::kDifference_Mode, "Difference", kBasic_SrcType }, + { SkXfermode::kExclusion_Mode, "Exclusion", kBasic_SrcType }, + { SkXfermode::kMultiply_Mode, "Multiply", kAll_SrcType }, + { SkXfermode::kHue_Mode, "Hue", kBasic_SrcType }, + { SkXfermode::kSaturation_Mode, "Saturation", kBasic_SrcType }, + { SkXfermode::kColor_Mode, "Color", kBasic_SrcType }, + { SkXfermode::kLuminosity_Mode, "Luminosity", kBasic_SrcType }, +}; static void make_bitmaps(int w, int h, SkBitmap* src, SkBitmap* dst, SkBitmap* transparent) { @@ -47,29 +109,7 @@ static void make_bitmaps(int w, int h, SkBitmap* src, SkBitmap* dst, static uint16_t gData[] = { 0xFFFF, 0xCCCF, 0xCCCF, 0xFFFF }; -class XfermodesGM : public GM { - enum SrcType { - //! A WxH image with a rectangle in the lower right. - kRectangleImage_SrcType = 0x01, - //! kRectangleImage_SrcType with an alpha of 34.5%. - kRectangleImageWithAlpha_SrcType = 0x02, - //! kRectnagleImageWithAlpha_SrcType scaled down by half. - kSmallRectangleImageWithAlpha_SrcType = 0x04, - //! kRectangleImage_SrcType drawn directly instead in an image. - kRectangle_SrcType = 0x08, - //! Two rectangles, first on the right half, second on the bottom half. - kQuarterClear_SrcType = 0x10, - //! kQuarterClear_SrcType in a layer. - kQuarterClearInLayer_SrcType = 0x20, - //! A W/2xH/2 transparent image. - kSmallTransparentImage_SrcType = 0x40, - //! kRectangleImage_SrcType drawn directly with a mask. - kRectangleWithMask_SrcType = 0x80, - - kAll_SrcType = 0xFF, //!< All the source types. - kBasic_SrcType = 0x03, //!< Just basic source types. - }; - +class XfermodesGM : public skiagm::GM { SkBitmap fBG; SkBitmap fSrcB, fDstB, fTransparent; @@ -179,48 +219,6 @@ protected: void onDraw(SkCanvas* canvas) override { canvas->translate(SkIntToScalar(10), SkIntToScalar(20)); - const struct { - SkXfermode::Mode fMode; - const char* fLabel; - int fSourceTypeMask; // The source types to use this - // mode with. See draw_mode for - // an explanation of each type. - // PDF has to play some tricks - // to support the base modes, - // test those more extensively. - } gModes[] = { - { SkXfermode::kClear_Mode, "Clear", kAll_SrcType }, - { SkXfermode::kSrc_Mode, "Src", kAll_SrcType }, - { SkXfermode::kDst_Mode, "Dst", kAll_SrcType }, - { SkXfermode::kSrcOver_Mode, "SrcOver", kAll_SrcType }, - { SkXfermode::kDstOver_Mode, "DstOver", kAll_SrcType }, - { SkXfermode::kSrcIn_Mode, "SrcIn", kAll_SrcType }, - { SkXfermode::kDstIn_Mode, "DstIn", kAll_SrcType }, - { SkXfermode::kSrcOut_Mode, "SrcOut", kAll_SrcType }, - { SkXfermode::kDstOut_Mode, "DstOut", kAll_SrcType }, - { SkXfermode::kSrcATop_Mode, "SrcATop", kAll_SrcType }, - { SkXfermode::kDstATop_Mode, "DstATop", kAll_SrcType }, - - { SkXfermode::kXor_Mode, "Xor", kBasic_SrcType }, - { SkXfermode::kPlus_Mode, "Plus", kBasic_SrcType }, - { SkXfermode::kModulate_Mode, "Modulate", kAll_SrcType }, - { SkXfermode::kScreen_Mode, "Screen", kBasic_SrcType }, - { SkXfermode::kOverlay_Mode, "Overlay", kBasic_SrcType }, - { SkXfermode::kDarken_Mode, "Darken", kBasic_SrcType }, - { SkXfermode::kLighten_Mode, "Lighten", kBasic_SrcType }, - { SkXfermode::kColorDodge_Mode, "ColorDodge", kBasic_SrcType }, - { SkXfermode::kColorBurn_Mode, "ColorBurn", kBasic_SrcType }, - { SkXfermode::kHardLight_Mode, "HardLight", kBasic_SrcType }, - { SkXfermode::kSoftLight_Mode, "SoftLight", kBasic_SrcType }, - { SkXfermode::kDifference_Mode, "Difference", kBasic_SrcType }, - { SkXfermode::kExclusion_Mode, "Exclusion", kBasic_SrcType }, - { SkXfermode::kMultiply_Mode, "Multiply", kAll_SrcType }, - { SkXfermode::kHue_Mode, "Hue", kBasic_SrcType }, - { SkXfermode::kSaturation_Mode, "Saturation", kBasic_SrcType }, - { SkXfermode::kColor_Mode, "Color", kBasic_SrcType }, - { SkXfermode::kLuminosity_Mode, "Luminosity", kBasic_SrcType }, - }; - const SkScalar w = SkIntToScalar(W); const SkScalar h = SkIntToScalar(H); SkMatrix m; @@ -291,10 +289,129 @@ protected: private: typedef GM INHERITED; }; +DEF_GM( return new XfermodesGM; ) + +/////////////////////////////////////////////////////////////////////////////////////////////////// +#include "SkNx.h" + +static SkPMColor apply_proc(SkPMColor src, SkPMColor dst, SkXfermodeProc4f proc, float src_alpha) { + SkPM4f src4 = SkPM4f::FromPMColor(src); + for (int i = 0; i < 4; ++i) { + src4.fVec[i] *= src_alpha; + } + SkPM4f dst4 = SkPM4f::FromPMColor(dst); + SkPM4f res4 = proc(src4, dst4); + SkPMColor res; + SkNx_cast<uint8_t>(Sk4f::Load(res4.fVec) * Sk4f(255) + Sk4f(0.5f)).store(&res); + return res; +} + +static bool apply_mode(const SkPixmap& res, const SkPixmap& src, const SkPixmap& dst, + SkXfermode* xfer, float src_alpha) { + SkXfermode::Mode mode; + if (!xfer) { + mode = SkXfermode::kSrcOver_Mode; + } else if (!xfer->asMode(&mode)) { + return false; + } + SkXfermodeProc4f proc = SkXfermode::GetProc4f(mode); + if (!proc) { + return false; + } + + for (int y = 0; y < res.height(); ++y) { + for (int x = 0; x < res.width(); ++x) { + *res.writable_addr32(x, y) = apply_proc(*src.addr32(x, y), *dst.addr32(x, y), + proc, src_alpha); + } + } + return true; +} -////////////////////////////////////////////////////////////////////////////// +void draw_mode(const SkBitmap& srcB, const SkBitmap& dstB, + SkCanvas* canvas, SkXfermode* mode, SkScalar x, SkScalar y, float src_alpha) { + SkBitmap resB; + resB.allocN32Pixels(64, 64); -static GM* MyFactory(void*) { return new XfermodesGM; } -static GMRegistry reg(MyFactory); + SkPixmap srcPM, dstPM, resPM; + srcB.peekPixels(&srcPM); + dstB.peekPixels(&dstPM); + resB.peekPixels(&resPM); + if (apply_mode(resPM, srcPM, dstPM, mode, src_alpha)) { + canvas->drawBitmap(resB, x, y, nullptr); + } +} + +DEF_SIMPLE_GM(xfermodes_proc4f, canvas, 1000, 1000) { + SkBitmap bg, srcB, dstB, transparent; + + bg.installPixels(SkImageInfo::Make(2, 2, kARGB_4444_SkColorType, kOpaque_SkAlphaType), + gData, 4); + make_bitmaps(64, 64, &dstB, &srcB, &transparent); + + canvas->translate(10, 20); + + const SkScalar w = 64; + const SkScalar h = 64; + SkMatrix m = SkMatrix::MakeScale(6, 6); + SkShader* s = SkShader::CreateBitmapShader(bg, + SkShader::kRepeat_TileMode, + SkShader::kRepeat_TileMode, + &m); + + SkPaint labelP; + labelP.setAntiAlias(true); + sk_tool_utils::set_portable_typeface(&labelP); + labelP.setTextAlign(SkPaint::kCenter_Align); + + const int W = 5; + + const float alphas[] = { 1.0f, 0.5f }; + + for (auto alpha : alphas) { + SkScalar x0 = 0; + SkScalar y0 = 0; + SkScalar x = x0, y = y0; + for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); i++) { + SkXfermode* mode = SkXfermode::Create(gModes[i].fMode); + SkAutoUnref aur(mode); + SkRect r; + r.set(x, y, x+w, y+h); + + SkPaint p; + p.setStyle(SkPaint::kFill_Style); + p.setShader(s); + canvas->drawRect(r, p); + + draw_mode(srcB, dstB, canvas, mode, r.fLeft, r.fTop, alpha); + + r.inset(-SK_ScalarHalf, -SK_ScalarHalf); + p.setStyle(SkPaint::kStroke_Style); + p.setShader(nullptr); + canvas->drawRect(r, p); + + #if 1 + canvas->drawText(gModes[i].fLabel, strlen(gModes[i].fLabel), + x + w/2, y - labelP.getTextSize()/2, labelP); + #endif + x += w + SkIntToScalar(10); + if ((i % W) == W - 1) { + x = x0; + y += h + SkIntToScalar(30); + } + } + if (y < 320) { + if (x > x0) { + y += h + SkIntToScalar(30); + } + y0 = y; + } else { + x0 += SkIntToScalar(400); + y0 = 0; + } + + canvas->translate(400, 0); + } + s->unref(); } |