reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 1 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 2 | * Copyright 2006 The Android Open Source Project |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 3 | * |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 6 | */ |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 7 | |
reed@android.com | c4cae85 | 2009-09-23 15:06:10 +0000 | [diff] [blame] | 8 | #include "SkBlitRow.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 9 | #include "SkColorFilter.h" |
| 10 | #include "SkColorPriv.h" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 11 | #include "SkReadBuffer.h" |
| 12 | #include "SkWriteBuffer.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 13 | #include "SkUtils.h" |
robertphillips@google.com | 1202c2a | 2013-05-23 14:00:17 +0000 | [diff] [blame] | 14 | #include "SkString.h" |
commit-bot@chromium.org | c0b7e10 | 2013-10-23 17:06:21 +0000 | [diff] [blame] | 15 | #include "SkValidationUtils.h" |
reed@google.com | 31b3044 | 2014-02-06 20:59:47 +0000 | [diff] [blame] | 16 | #include "SkColorMatrixFilter.h" |
| 17 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 18 | #define ILLEGAL_XFERMODE_MODE ((SkXfermode::Mode)-1) |
| 19 | |
| 20 | // baseclass for filters that store a color and mode |
| 21 | class SkModeColorFilter : public SkColorFilter { |
| 22 | public: |
| 23 | SkModeColorFilter(SkColor color) { |
| 24 | fColor = color; |
| 25 | fMode = ILLEGAL_XFERMODE_MODE; |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 26 | this->updateCache(); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 27 | } |
| 28 | |
| 29 | SkModeColorFilter(SkColor color, SkXfermode::Mode mode) { |
| 30 | fColor = color; |
| 31 | fMode = mode; |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 32 | this->updateCache(); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 33 | }; |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 34 | |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 35 | SkColor getColor() const { return fColor; } |
| 36 | SkXfermode::Mode getMode() const { return fMode; } |
| 37 | bool isModeValid() const { return ILLEGAL_XFERMODE_MODE != fMode; } |
| 38 | SkPMColor getPMColor() const { return fPMColor; } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 39 | |
reed@google.com | bada644 | 2012-12-17 20:21:44 +0000 | [diff] [blame] | 40 | virtual bool asColorMode(SkColor* color, SkXfermode::Mode* mode) const SK_OVERRIDE { |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 41 | if (ILLEGAL_XFERMODE_MODE == fMode) { |
| 42 | return false; |
| 43 | } |
| 44 | |
| 45 | if (color) { |
| 46 | *color = fColor; |
| 47 | } |
| 48 | if (mode) { |
| 49 | *mode = fMode; |
| 50 | } |
| 51 | return true; |
| 52 | } |
| 53 | |
reed@google.com | bada644 | 2012-12-17 20:21:44 +0000 | [diff] [blame] | 54 | virtual uint32_t getFlags() const SK_OVERRIDE { |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 55 | return fProc16 ? (kAlphaUnchanged_Flag | kHasFilter16_Flag) : 0; |
| 56 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 57 | |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 58 | virtual void filterSpan(const SkPMColor shader[], int count, |
reed@google.com | bada644 | 2012-12-17 20:21:44 +0000 | [diff] [blame] | 59 | SkPMColor result[]) const SK_OVERRIDE { |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 60 | SkPMColor color = fPMColor; |
| 61 | SkXfermodeProc proc = fProc; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 62 | |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 63 | for (int i = 0; i < count; i++) { |
| 64 | result[i] = proc(color, shader[i]); |
| 65 | } |
| 66 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 67 | |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 68 | virtual void filterSpan16(const uint16_t shader[], int count, |
reed@google.com | bada644 | 2012-12-17 20:21:44 +0000 | [diff] [blame] | 69 | uint16_t result[]) const SK_OVERRIDE { |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 70 | SkASSERT(this->getFlags() & kHasFilter16_Flag); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 71 | |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 72 | SkPMColor color = fPMColor; |
| 73 | SkXfermodeProc16 proc16 = fProc16; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 74 | |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 75 | for (int i = 0; i < count; i++) { |
| 76 | result[i] = proc16(color, shader[i]); |
| 77 | } |
| 78 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 79 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 80 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | 1202c2a | 2013-05-23 14:00:17 +0000 | [diff] [blame] | 81 | virtual void toString(SkString* str) const SK_OVERRIDE { |
| 82 | str->append("SkModeColorFilter: color: 0x"); |
| 83 | str->appendHex(fColor); |
| 84 | str->append(" mode: "); |
| 85 | str->append(SkXfermode::ModeName(fMode)); |
| 86 | } |
| 87 | #endif |
| 88 | |
commit-bot@chromium.org | a34995e | 2013-10-23 05:42:03 +0000 | [diff] [blame] | 89 | #if SK_SUPPORT_GPU |
bsalomon | 97b9ab7 | 2014-07-08 06:52:35 -0700 | [diff] [blame] | 90 | virtual GrEffect* asNewEffect(GrContext*) const SK_OVERRIDE; |
commit-bot@chromium.org | a34995e | 2013-10-23 05:42:03 +0000 | [diff] [blame] | 91 | #endif |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 92 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkModeColorFilter) |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 93 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 94 | protected: |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 95 | virtual void flatten(SkWriteBuffer& buffer) const SK_OVERRIDE { |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 96 | this->INHERITED::flatten(buffer); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 97 | buffer.writeColor(fColor); |
| 98 | buffer.writeUInt(fMode); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 99 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 100 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 101 | SkModeColorFilter(SkReadBuffer& buffer) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 102 | fColor = buffer.readColor(); |
| 103 | fMode = (SkXfermode::Mode)buffer.readUInt(); |
commit-bot@chromium.org | c2e9db3 | 2013-12-06 20:14:46 +0000 | [diff] [blame] | 104 | if (buffer.isValid()) { |
| 105 | this->updateCache(); |
| 106 | buffer.validate(SkIsValidMode(fMode)); |
| 107 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 108 | } |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 109 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 110 | private: |
| 111 | SkColor fColor; |
| 112 | SkXfermode::Mode fMode; |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 113 | // cache |
| 114 | SkPMColor fPMColor; |
| 115 | SkXfermodeProc fProc; |
| 116 | SkXfermodeProc16 fProc16; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 117 | |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 118 | void updateCache() { |
| 119 | fPMColor = SkPreMultiplyColor(fColor); |
| 120 | fProc = SkXfermode::GetProc(fMode); |
| 121 | fProc16 = SkXfermode::GetProc16(fMode, fColor); |
| 122 | } |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 123 | |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 124 | typedef SkColorFilter INHERITED; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 125 | }; |
| 126 | |
commit-bot@chromium.org | a34995e | 2013-10-23 05:42:03 +0000 | [diff] [blame] | 127 | /////////////////////////////////////////////////////////////////////////////// |
| 128 | #if SK_SUPPORT_GPU |
| 129 | #include "GrBlend.h" |
| 130 | #include "GrEffect.h" |
| 131 | #include "GrEffectUnitTest.h" |
| 132 | #include "GrTBackendEffectFactory.h" |
| 133 | #include "gl/GrGLEffect.h" |
bsalomon | 848faf0 | 2014-07-11 10:01:02 -0700 | [diff] [blame] | 134 | #include "gl/GrGLShaderBuilder.h" |
commit-bot@chromium.org | a34995e | 2013-10-23 05:42:03 +0000 | [diff] [blame] | 135 | #include "SkGr.h" |
| 136 | |
| 137 | namespace { |
| 138 | /** |
| 139 | * A definition of blend equation for one coefficient. Generates a |
| 140 | * blend_coeff * value "expression". |
| 141 | */ |
| 142 | template<typename ColorExpr> |
| 143 | static inline ColorExpr blend_term(SkXfermode::Coeff coeff, |
| 144 | const ColorExpr& src, |
| 145 | const ColorExpr& dst, |
| 146 | const ColorExpr& value) { |
| 147 | switch (coeff) { |
| 148 | default: |
commit-bot@chromium.org | 88cb22b | 2014-04-30 14:17:00 +0000 | [diff] [blame] | 149 | SkFAIL("Unexpected xfer coeff."); |
commit-bot@chromium.org | a34995e | 2013-10-23 05:42:03 +0000 | [diff] [blame] | 150 | case SkXfermode::kZero_Coeff: /** 0 */ |
| 151 | return ColorExpr(0); |
| 152 | case SkXfermode::kOne_Coeff: /** 1 */ |
| 153 | return value; |
| 154 | case SkXfermode::kSC_Coeff: |
| 155 | return src * value; |
| 156 | case SkXfermode::kISC_Coeff: |
| 157 | return (ColorExpr(1) - src) * dst; |
| 158 | case SkXfermode::kDC_Coeff: |
| 159 | return dst * value; |
| 160 | case SkXfermode::kIDC_Coeff: |
| 161 | return (ColorExpr(1) - dst) * value; |
| 162 | case SkXfermode::kSA_Coeff: /** src alpha */ |
| 163 | return src.a() * value; |
| 164 | case SkXfermode::kISA_Coeff: /** inverse src alpha (i.e. 1 - sa) */ |
| 165 | return (typename ColorExpr::AExpr(1) - src.a()) * value; |
| 166 | case SkXfermode::kDA_Coeff: /** dst alpha */ |
| 167 | return dst.a() * value; |
| 168 | case SkXfermode::kIDA_Coeff: /** inverse dst alpha (i.e. 1 - da) */ |
| 169 | return (typename ColorExpr::AExpr(1) - dst.a()) * value; |
| 170 | } |
| 171 | } |
| 172 | /** |
| 173 | * Creates a color filter expression which modifies the color by |
| 174 | * the specified color filter. |
| 175 | */ |
| 176 | template <typename ColorExpr> |
| 177 | static inline ColorExpr color_filter_expression(const SkXfermode::Mode& mode, |
| 178 | const ColorExpr& filterColor, |
| 179 | const ColorExpr& inColor) { |
| 180 | SkXfermode::Coeff colorCoeff; |
| 181 | SkXfermode::Coeff filterColorCoeff; |
| 182 | SkAssertResult(SkXfermode::ModeAsCoeff(mode, &filterColorCoeff, &colorCoeff)); |
| 183 | return blend_term(colorCoeff, filterColor, inColor, inColor) + |
| 184 | blend_term(filterColorCoeff, filterColor, inColor, filterColor); |
| 185 | } |
| 186 | |
| 187 | } |
| 188 | |
| 189 | class ModeColorFilterEffect : public GrEffect { |
| 190 | public: |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 191 | static GrEffect* Create(const GrColor& c, SkXfermode::Mode mode) { |
commit-bot@chromium.org | a93f4e7 | 2013-11-05 15:47:48 +0000 | [diff] [blame] | 192 | // TODO: Make the effect take the coeffs rather than mode since we already do the |
| 193 | // conversion here. |
| 194 | SkXfermode::Coeff srcCoeff, dstCoeff; |
| 195 | if (!SkXfermode::ModeAsCoeff(mode, &srcCoeff, &dstCoeff)) { |
| 196 | SkDebugf("Failing to create color filter for mode %d\n", mode); |
| 197 | return NULL; |
| 198 | } |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 199 | return SkNEW_ARGS(ModeColorFilterEffect, (c, mode)); |
commit-bot@chromium.org | a34995e | 2013-10-23 05:42:03 +0000 | [diff] [blame] | 200 | } |
| 201 | |
| 202 | virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE; |
| 203 | |
| 204 | bool willUseFilterColor() const { |
| 205 | SkXfermode::Coeff dstCoeff; |
| 206 | SkXfermode::Coeff srcCoeff; |
| 207 | SkAssertResult(SkXfermode::ModeAsCoeff(fMode, &srcCoeff, &dstCoeff)); |
| 208 | if (SkXfermode::kZero_Coeff == srcCoeff) { |
| 209 | return GrBlendCoeffRefsSrc(sk_blend_to_grblend(dstCoeff)); |
| 210 | } |
| 211 | return true; |
| 212 | } |
| 213 | |
| 214 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE { |
| 215 | return GrTBackendEffectFactory<ModeColorFilterEffect>::getInstance(); |
| 216 | } |
| 217 | |
| 218 | static const char* Name() { return "ModeColorFilterEffect"; } |
| 219 | |
| 220 | SkXfermode::Mode mode() const { return fMode; } |
| 221 | GrColor color() const { return fColor; } |
| 222 | |
| 223 | class GLEffect : public GrGLEffect { |
| 224 | public: |
| 225 | GLEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&) |
| 226 | : INHERITED(factory) { |
| 227 | } |
| 228 | |
| 229 | virtual void emitCode(GrGLShaderBuilder* builder, |
| 230 | const GrDrawEffect& drawEffect, |
| 231 | EffectKey key, |
| 232 | const char* outputColor, |
| 233 | const char* inputColor, |
| 234 | const TransformedCoordsArray& coords, |
| 235 | const TextureSamplerArray& samplers) SK_OVERRIDE { |
| 236 | SkXfermode::Mode mode = drawEffect.castEffect<ModeColorFilterEffect>().mode(); |
| 237 | |
| 238 | SkASSERT(SkXfermode::kDst_Mode != mode); |
| 239 | const char* colorFilterColorUniName = NULL; |
| 240 | if (drawEffect.castEffect<ModeColorFilterEffect>().willUseFilterColor()) { |
| 241 | fFilterColorUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, |
| 242 | kVec4f_GrSLType, "FilterColor", |
| 243 | &colorFilterColorUniName); |
| 244 | } |
| 245 | |
| 246 | GrGLSLExpr4 filter = |
| 247 | color_filter_expression(mode, GrGLSLExpr4(colorFilterColorUniName), GrGLSLExpr4(inputColor)); |
| 248 | |
| 249 | builder->fsCodeAppendf("\t%s = %s;\n", outputColor, filter.c_str()); |
| 250 | } |
| 251 | |
| 252 | static inline EffectKey GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&) { |
| 253 | const ModeColorFilterEffect& colorModeFilter = drawEffect.castEffect<ModeColorFilterEffect>(); |
| 254 | // The SL code does not depend on filter color at the moment, so no need to represent it |
| 255 | // in the key. |
| 256 | EffectKey modeKey = colorModeFilter.mode(); |
| 257 | return modeKey; |
| 258 | } |
| 259 | |
| 260 | virtual void setData(const GrGLUniformManager& uman, const GrDrawEffect& drawEffect) SK_OVERRIDE { |
| 261 | if (fFilterColorUni.isValid()) { |
| 262 | const ModeColorFilterEffect& colorModeFilter = drawEffect.castEffect<ModeColorFilterEffect>(); |
| 263 | GrGLfloat c[4]; |
| 264 | GrColorToRGBAFloat(colorModeFilter.color(), c); |
commit-bot@chromium.org | d3baf20 | 2013-11-07 22:06:08 +0000 | [diff] [blame] | 265 | uman.set4fv(fFilterColorUni, 1, c); |
commit-bot@chromium.org | a34995e | 2013-10-23 05:42:03 +0000 | [diff] [blame] | 266 | } |
| 267 | } |
| 268 | |
| 269 | private: |
| 270 | |
| 271 | GrGLUniformManager::UniformHandle fFilterColorUni; |
| 272 | typedef GrGLEffect INHERITED; |
| 273 | }; |
| 274 | |
| 275 | GR_DECLARE_EFFECT_TEST; |
| 276 | |
| 277 | private: |
| 278 | ModeColorFilterEffect(GrColor color, SkXfermode::Mode mode) |
| 279 | : fMode(mode), |
| 280 | fColor(color) { |
| 281 | |
| 282 | SkXfermode::Coeff dstCoeff; |
| 283 | SkXfermode::Coeff srcCoeff; |
| 284 | SkAssertResult(SkXfermode::ModeAsCoeff(fMode, &srcCoeff, &dstCoeff)); |
| 285 | // These could be calculated from the blend equation with template trickery.. |
| 286 | if (SkXfermode::kZero_Coeff == dstCoeff && !GrBlendCoeffRefsDst(sk_blend_to_grblend(srcCoeff))) { |
| 287 | this->setWillNotUseInputColor(); |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE { |
| 292 | const ModeColorFilterEffect& s = CastEffect<ModeColorFilterEffect>(other); |
| 293 | return fMode == s.fMode && fColor == s.fColor; |
| 294 | } |
| 295 | |
| 296 | SkXfermode::Mode fMode; |
| 297 | GrColor fColor; |
| 298 | |
| 299 | typedef GrEffect INHERITED; |
| 300 | }; |
| 301 | |
| 302 | namespace { |
| 303 | |
| 304 | /** Function color_component_to_int tries to reproduce the GLSL rounding. The spec doesn't specify |
| 305 | * to which direction the 0.5 goes. |
| 306 | */ |
| 307 | static inline int color_component_to_int(float value) { |
commit-bot@chromium.org | 972f9cd | 2014-03-28 17:58:28 +0000 | [diff] [blame] | 308 | return sk_float_round2int(SkTMax(0.f, SkTMin(1.f, value)) * 255.f); |
commit-bot@chromium.org | a34995e | 2013-10-23 05:42:03 +0000 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | /** MaskedColorExpr is used to evaluate the color and valid color component flags through the |
| 312 | * blending equation. It has members similar to GrGLSLExpr so that it can be used with the |
| 313 | * templated helpers above. |
| 314 | */ |
| 315 | class MaskedColorExpr { |
| 316 | public: |
| 317 | MaskedColorExpr(const float color[], uint32_t flags) |
| 318 | : fFlags(flags) { |
| 319 | fColor[0] = color[0]; |
| 320 | fColor[1] = color[1]; |
| 321 | fColor[2] = color[2]; |
| 322 | fColor[3] = color[3]; |
| 323 | } |
| 324 | |
| 325 | MaskedColorExpr(float v, uint32_t flags = kRGBA_GrColorComponentFlags) |
| 326 | : fFlags(flags) { |
| 327 | fColor[0] = v; |
| 328 | fColor[1] = v; |
| 329 | fColor[2] = v; |
| 330 | fColor[3] = v; |
| 331 | } |
| 332 | |
| 333 | MaskedColorExpr operator*(const MaskedColorExpr& other) const { |
| 334 | float tmp[4]; |
| 335 | tmp[0] = fColor[0] * other.fColor[0]; |
| 336 | tmp[1] = fColor[1] * other.fColor[1]; |
| 337 | tmp[2] = fColor[2] * other.fColor[2]; |
| 338 | tmp[3] = fColor[3] * other.fColor[3]; |
| 339 | |
| 340 | return MaskedColorExpr(tmp, fFlags & other.fFlags); |
| 341 | } |
| 342 | |
| 343 | MaskedColorExpr operator+(const MaskedColorExpr& other) const { |
| 344 | float tmp[4]; |
| 345 | tmp[0] = fColor[0] + other.fColor[0]; |
| 346 | tmp[1] = fColor[1] + other.fColor[1]; |
| 347 | tmp[2] = fColor[2] + other.fColor[2]; |
| 348 | tmp[3] = fColor[3] + other.fColor[3]; |
| 349 | |
| 350 | return MaskedColorExpr(tmp, fFlags & other.fFlags); |
| 351 | } |
| 352 | |
| 353 | MaskedColorExpr operator-(const MaskedColorExpr& other) const { |
| 354 | float tmp[4]; |
| 355 | tmp[0] = fColor[0] - other.fColor[0]; |
| 356 | tmp[1] = fColor[1] - other.fColor[1]; |
| 357 | tmp[2] = fColor[2] - other.fColor[2]; |
| 358 | tmp[3] = fColor[3] - other.fColor[3]; |
| 359 | |
| 360 | return MaskedColorExpr(tmp, fFlags & other.fFlags); |
| 361 | } |
| 362 | |
| 363 | MaskedColorExpr a() const { |
| 364 | uint32_t flags = (fFlags & kA_GrColorComponentFlag) ? kRGBA_GrColorComponentFlags : 0; |
| 365 | return MaskedColorExpr(fColor[3], flags); |
| 366 | } |
| 367 | |
| 368 | GrColor getColor() const { |
| 369 | return GrColorPackRGBA(color_component_to_int(fColor[0]), |
| 370 | color_component_to_int(fColor[1]), |
| 371 | color_component_to_int(fColor[2]), |
| 372 | color_component_to_int(fColor[3])); |
| 373 | } |
| 374 | |
| 375 | uint32_t getValidComponents() const { return fFlags; } |
| 376 | |
| 377 | typedef MaskedColorExpr AExpr; |
| 378 | private: |
| 379 | float fColor[4]; |
| 380 | uint32_t fFlags; |
| 381 | }; |
| 382 | |
| 383 | } |
| 384 | |
| 385 | void ModeColorFilterEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const { |
| 386 | float inputColor[4]; |
| 387 | GrColorToRGBAFloat(*color, inputColor); |
| 388 | float filterColor[4]; |
| 389 | GrColorToRGBAFloat(fColor, filterColor); |
| 390 | MaskedColorExpr result = |
| 391 | color_filter_expression(fMode, |
| 392 | MaskedColorExpr(filterColor, kRGBA_GrColorComponentFlags), |
| 393 | MaskedColorExpr(inputColor, *validFlags)); |
| 394 | |
| 395 | *color = result.getColor(); |
| 396 | *validFlags = result.getValidComponents(); |
| 397 | } |
| 398 | |
| 399 | GR_DEFINE_EFFECT_TEST(ModeColorFilterEffect); |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 400 | GrEffect* ModeColorFilterEffect::TestCreate(SkRandom* rand, |
| 401 | GrContext*, |
| 402 | const GrDrawTargetCaps&, |
| 403 | GrTexture*[]) { |
commit-bot@chromium.org | 23267ce | 2013-10-24 13:29:38 +0000 | [diff] [blame] | 404 | SkXfermode::Mode mode = SkXfermode::kDst_Mode; |
| 405 | while (SkXfermode::kDst_Mode == mode) { |
| 406 | mode = static_cast<SkXfermode::Mode>(rand->nextRangeU(0, SkXfermode::kLastCoeffMode)); |
| 407 | } |
commit-bot@chromium.org | a34995e | 2013-10-23 05:42:03 +0000 | [diff] [blame] | 408 | GrColor color = rand->nextU(); |
commit-bot@chromium.org | 23267ce | 2013-10-24 13:29:38 +0000 | [diff] [blame] | 409 | return ModeColorFilterEffect::Create(color, mode); |
commit-bot@chromium.org | a34995e | 2013-10-23 05:42:03 +0000 | [diff] [blame] | 410 | } |
| 411 | |
bsalomon | 97b9ab7 | 2014-07-08 06:52:35 -0700 | [diff] [blame] | 412 | GrEffect* SkModeColorFilter::asNewEffect(GrContext*) const { |
commit-bot@chromium.org | a34995e | 2013-10-23 05:42:03 +0000 | [diff] [blame] | 413 | if (SkXfermode::kDst_Mode != fMode) { |
| 414 | return ModeColorFilterEffect::Create(SkColor2GrColor(fColor), fMode); |
| 415 | } |
| 416 | return NULL; |
| 417 | } |
| 418 | |
| 419 | #endif |
| 420 | |
| 421 | /////////////////////////////////////////////////////////////////////////////// |
| 422 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 423 | class Src_SkModeColorFilter : public SkModeColorFilter { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 424 | public: |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 425 | Src_SkModeColorFilter(SkColor color) : INHERITED(color, SkXfermode::kSrc_Mode) {} |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 426 | |
mike@reedtribe.org | 3eafe9b | 2012-12-24 18:11:05 +0000 | [diff] [blame] | 427 | virtual uint32_t getFlags() const SK_OVERRIDE { |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 428 | if (SkGetPackedA32(this->getPMColor()) == 0xFF) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 429 | return kAlphaUnchanged_Flag | kHasFilter16_Flag; |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 430 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 431 | return 0; |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 432 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 433 | } |
| 434 | |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 435 | virtual void filterSpan(const SkPMColor shader[], int count, |
mike@reedtribe.org | 3eafe9b | 2012-12-24 18:11:05 +0000 | [diff] [blame] | 436 | SkPMColor result[]) const SK_OVERRIDE { |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 437 | sk_memset32(result, this->getPMColor(), count); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 438 | } |
| 439 | |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 440 | virtual void filterSpan16(const uint16_t shader[], int count, |
mike@reedtribe.org | 3eafe9b | 2012-12-24 18:11:05 +0000 | [diff] [blame] | 441 | uint16_t result[]) const SK_OVERRIDE { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 442 | SkASSERT(this->getFlags() & kHasFilter16_Flag); |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 443 | sk_memset16(result, SkPixel32ToPixel16(this->getPMColor()), count); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 444 | } |
| 445 | |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 446 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(Src_SkModeColorFilter) |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 447 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 448 | protected: |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 449 | Src_SkModeColorFilter(SkReadBuffer& buffer) |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 450 | : INHERITED(buffer) {} |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 451 | |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 452 | private: |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 453 | typedef SkModeColorFilter INHERITED; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 454 | }; |
| 455 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 456 | class SrcOver_SkModeColorFilter : public SkModeColorFilter { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 457 | public: |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 458 | SrcOver_SkModeColorFilter(SkColor color) |
| 459 | : INHERITED(color, SkXfermode::kSrcOver_Mode) { |
mike@reedtribe.org | 3eafe9b | 2012-12-24 18:11:05 +0000 | [diff] [blame] | 460 | fColor32Proc = SkBlitRow::ColorProcFactory(); |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 461 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 462 | |
mike@reedtribe.org | 3eafe9b | 2012-12-24 18:11:05 +0000 | [diff] [blame] | 463 | virtual uint32_t getFlags() const SK_OVERRIDE { |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 464 | if (SkGetPackedA32(this->getPMColor()) == 0xFF) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 465 | return kAlphaUnchanged_Flag | kHasFilter16_Flag; |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 466 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 467 | return 0; |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 468 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 469 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 470 | |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 471 | virtual void filterSpan(const SkPMColor shader[], int count, |
mike@reedtribe.org | 3eafe9b | 2012-12-24 18:11:05 +0000 | [diff] [blame] | 472 | SkPMColor result[]) const SK_OVERRIDE { |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 473 | fColor32Proc(result, shader, count, this->getPMColor()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 474 | } |
| 475 | |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 476 | virtual void filterSpan16(const uint16_t shader[], int count, |
mike@reedtribe.org | 3eafe9b | 2012-12-24 18:11:05 +0000 | [diff] [blame] | 477 | uint16_t result[]) const SK_OVERRIDE { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 478 | SkASSERT(this->getFlags() & kHasFilter16_Flag); |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 479 | sk_memset16(result, SkPixel32ToPixel16(this->getPMColor()), count); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 480 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 481 | |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 482 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SrcOver_SkModeColorFilter) |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 483 | |
| 484 | protected: |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 485 | SrcOver_SkModeColorFilter(SkReadBuffer& buffer) |
mike@reedtribe.org | 3eafe9b | 2012-12-24 18:11:05 +0000 | [diff] [blame] | 486 | : INHERITED(buffer) { |
| 487 | fColor32Proc = SkBlitRow::ColorProcFactory(); |
| 488 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 489 | |
| 490 | private: |
| 491 | |
senorblanco@chromium.org | 29e5054 | 2010-12-16 19:07:45 +0000 | [diff] [blame] | 492 | SkBlitRow::ColorProc fColor32Proc; |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 493 | |
| 494 | typedef SkModeColorFilter INHERITED; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 495 | }; |
| 496 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 497 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 498 | |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 499 | SkColorFilter* SkColorFilter::CreateModeFilter(SkColor color, |
| 500 | SkXfermode::Mode mode) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 501 | unsigned alpha = SkColorGetA(color); |
| 502 | |
| 503 | // first collaps some modes if possible |
| 504 | |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 505 | if (SkXfermode::kClear_Mode == mode) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 506 | color = 0; |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 507 | mode = SkXfermode::kSrc_Mode; |
| 508 | } else if (SkXfermode::kSrcOver_Mode == mode) { |
| 509 | if (0 == alpha) { |
| 510 | mode = SkXfermode::kDst_Mode; |
| 511 | } else if (255 == alpha) { |
| 512 | mode = SkXfermode::kSrc_Mode; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 513 | } |
| 514 | // else just stay srcover |
| 515 | } |
| 516 | |
| 517 | // weed out combinations that are noops, and just return null |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 518 | if (SkXfermode::kDst_Mode == mode || |
| 519 | (0 == alpha && (SkXfermode::kSrcOver_Mode == mode || |
| 520 | SkXfermode::kDstOver_Mode == mode || |
| 521 | SkXfermode::kDstOut_Mode == mode || |
| 522 | SkXfermode::kSrcATop_Mode == mode || |
| 523 | SkXfermode::kXor_Mode == mode || |
| 524 | SkXfermode::kDarken_Mode == mode)) || |
| 525 | (0xFF == alpha && SkXfermode::kDstIn_Mode == mode)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 526 | return NULL; |
| 527 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 528 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 529 | switch (mode) { |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 530 | case SkXfermode::kSrc_Mode: |
| 531 | return SkNEW_ARGS(Src_SkModeColorFilter, (color)); |
| 532 | case SkXfermode::kSrcOver_Mode: |
| 533 | return SkNEW_ARGS(SrcOver_SkModeColorFilter, (color)); |
| 534 | default: |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 535 | return SkNEW_ARGS(SkModeColorFilter, (color, mode)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 536 | } |
| 537 | } |
| 538 | |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 539 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 540 | |
reed@google.com | 31b3044 | 2014-02-06 20:59:47 +0000 | [diff] [blame] | 541 | static SkScalar byte_to_scale(U8CPU byte) { |
| 542 | if (0xFF == byte) { |
| 543 | // want to get this exact |
| 544 | return 1; |
| 545 | } else { |
| 546 | return byte * 0.00392156862745f; |
| 547 | } |
| 548 | } |
| 549 | |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 550 | SkColorFilter* SkColorFilter::CreateLightingFilter(SkColor mul, SkColor add) { |
reed@google.com | 31b3044 | 2014-02-06 20:59:47 +0000 | [diff] [blame] | 551 | SkColorMatrix matrix; |
| 552 | matrix.setScale(byte_to_scale(SkColorGetR(mul)), |
| 553 | byte_to_scale(SkColorGetG(mul)), |
| 554 | byte_to_scale(SkColorGetB(mul)), |
| 555 | 1); |
| 556 | matrix.postTranslate(SkIntToScalar(SkColorGetR(add)), |
| 557 | SkIntToScalar(SkColorGetG(add)), |
| 558 | SkIntToScalar(SkColorGetB(add)), |
| 559 | 0); |
commit-bot@chromium.org | 727a352 | 2014-02-21 18:46:30 +0000 | [diff] [blame] | 560 | return SkColorMatrixFilter::Create(matrix); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 561 | } |
| 562 | |
caryclark@google.com | d26147a | 2011-12-15 14:16:43 +0000 | [diff] [blame] | 563 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkColorFilter) |
reed@google.com | 8b0d0f6 | 2012-06-04 18:10:33 +0000 | [diff] [blame] | 564 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkModeColorFilter) |
caryclark@google.com | d26147a | 2011-12-15 14:16:43 +0000 | [diff] [blame] | 565 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(Src_SkModeColorFilter) |
| 566 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SrcOver_SkModeColorFilter) |
caryclark@google.com | d26147a | 2011-12-15 14:16:43 +0000 | [diff] [blame] | 567 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |