| /* |
| * 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 "SkTableColorFilter.h" |
| |
| #include "SkBitmap.h" |
| #include "SkColorPriv.h" |
| #include "SkReadBuffer.h" |
| #include "SkString.h" |
| #include "SkUnPreMultiply.h" |
| #include "SkWriteBuffer.h" |
| |
| class SkTable_ColorFilter : public SkColorFilter { |
| public: |
| SkTable_ColorFilter(const uint8_t tableA[], const uint8_t tableR[], |
| const uint8_t tableG[], const uint8_t tableB[]) { |
| fBitmap = nullptr; |
| fFlags = 0; |
| |
| uint8_t* dst = fStorage; |
| if (tableA) { |
| memcpy(dst, tableA, 256); |
| dst += 256; |
| fFlags |= kA_Flag; |
| } |
| if (tableR) { |
| memcpy(dst, tableR, 256); |
| dst += 256; |
| fFlags |= kR_Flag; |
| } |
| if (tableG) { |
| memcpy(dst, tableG, 256); |
| dst += 256; |
| fFlags |= kG_Flag; |
| } |
| if (tableB) { |
| memcpy(dst, tableB, 256); |
| fFlags |= kB_Flag; |
| } |
| } |
| |
| virtual ~SkTable_ColorFilter() { delete fBitmap; } |
| |
| bool asComponentTable(SkBitmap* table) const override; |
| sk_sp<SkColorFilter> makeComposed(sk_sp<SkColorFilter> inner) const override; |
| |
| #if SK_SUPPORT_GPU |
| sk_sp<GrFragmentProcessor> asFragmentProcessor(GrContext*) const override; |
| #endif |
| |
| void filterSpan(const SkPMColor src[], int count, SkPMColor dst[]) const override; |
| |
| SK_TO_STRING_OVERRIDE() |
| |
| SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTable_ColorFilter) |
| |
| enum { |
| kA_Flag = 1 << 0, |
| kR_Flag = 1 << 1, |
| kG_Flag = 1 << 2, |
| kB_Flag = 1 << 3, |
| }; |
| |
| protected: |
| void flatten(SkWriteBuffer&) const override; |
| |
| private: |
| mutable const SkBitmap* fBitmap; // lazily allocated |
| |
| uint8_t fStorage[256 * 4]; |
| unsigned fFlags; |
| |
| friend class SkTableColorFilter; |
| |
| typedef SkColorFilter INHERITED; |
| }; |
| |
| static const uint8_t gIdentityTable[] = { |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
| 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
| 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, |
| 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, |
| 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, |
| 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, |
| 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, |
| 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, |
| 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, |
| 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, |
| 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, |
| 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, |
| 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, |
| 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, |
| 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, |
| 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, |
| 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, |
| 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, |
| 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, |
| 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, |
| 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, |
| 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, |
| 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, |
| 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, |
| 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, |
| 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, |
| 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, |
| 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, |
| 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, |
| 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF |
| }; |
| |
| void SkTable_ColorFilter::filterSpan(const SkPMColor src[], int count, SkPMColor dst[]) const { |
| const uint8_t* table = fStorage; |
| const uint8_t* tableA = gIdentityTable; |
| const uint8_t* tableR = gIdentityTable; |
| const uint8_t* tableG = gIdentityTable; |
| const uint8_t* tableB = gIdentityTable; |
| if (fFlags & kA_Flag) { |
| tableA = table; table += 256; |
| } |
| if (fFlags & kR_Flag) { |
| tableR = table; table += 256; |
| } |
| if (fFlags & kG_Flag) { |
| tableG = table; table += 256; |
| } |
| if (fFlags & kB_Flag) { |
| tableB = table; |
| } |
| |
| const SkUnPreMultiply::Scale* scaleTable = SkUnPreMultiply::GetScaleTable(); |
| for (int i = 0; i < count; ++i) { |
| SkPMColor c = src[i]; |
| unsigned a, r, g, b; |
| if (0 == c) { |
| a = r = g = b = 0; |
| } else { |
| a = SkGetPackedA32(c); |
| r = SkGetPackedR32(c); |
| g = SkGetPackedG32(c); |
| b = SkGetPackedB32(c); |
| |
| if (a < 255) { |
| SkUnPreMultiply::Scale scale = scaleTable[a]; |
| r = SkUnPreMultiply::ApplyScale(scale, r); |
| g = SkUnPreMultiply::ApplyScale(scale, g); |
| b = SkUnPreMultiply::ApplyScale(scale, b); |
| } |
| } |
| dst[i] = SkPremultiplyARGBInline(tableA[a], tableR[r], |
| tableG[g], tableB[b]); |
| } |
| } |
| |
| #ifndef SK_IGNORE_TO_STRING |
| void SkTable_ColorFilter::toString(SkString* str) const { |
| const uint8_t* table = fStorage; |
| const uint8_t* tableA = gIdentityTable; |
| const uint8_t* tableR = gIdentityTable; |
| const uint8_t* tableG = gIdentityTable; |
| const uint8_t* tableB = gIdentityTable; |
| if (fFlags & kA_Flag) { |
| tableA = table; table += 256; |
| } |
| if (fFlags & kR_Flag) { |
| tableR = table; table += 256; |
| } |
| if (fFlags & kG_Flag) { |
| tableG = table; table += 256; |
| } |
| if (fFlags & kB_Flag) { |
| tableB = table; |
| } |
| |
| str->append("SkTable_ColorFilter ("); |
| |
| for (int i = 0; i < 256; ++i) { |
| str->appendf("%d: %d,%d,%d,%d\n", |
| i, tableR[i], tableG[i], tableB[i], tableA[i]); |
| } |
| |
| str->append(")"); |
| } |
| #endif |
| |
| static const uint8_t gCountNibBits[] = { |
| 0, 1, 1, 2, |
| 1, 2, 2, 3, |
| 1, 2, 2, 3, |
| 2, 3, 3, 4 |
| }; |
| |
| #include "SkPackBits.h" |
| |
| void SkTable_ColorFilter::flatten(SkWriteBuffer& buffer) const { |
| uint8_t storage[5*256]; |
| int count = gCountNibBits[fFlags & 0xF]; |
| size_t size = SkPackBits::Pack8(fStorage, count * 256, storage, |
| sizeof(storage)); |
| |
| buffer.write32(fFlags); |
| buffer.writeByteArray(storage, size); |
| } |
| |
| sk_sp<SkFlattenable> SkTable_ColorFilter::CreateProc(SkReadBuffer& buffer) { |
| const int flags = buffer.read32(); |
| const size_t count = gCountNibBits[flags & 0xF]; |
| SkASSERT(count <= 4); |
| |
| uint8_t packedStorage[5*256]; |
| size_t packedSize = buffer.getArrayCount(); |
| if (!buffer.validate(packedSize <= sizeof(packedStorage))) { |
| return nullptr; |
| } |
| if (!buffer.readByteArray(packedStorage, packedSize)) { |
| return nullptr; |
| } |
| |
| uint8_t unpackedStorage[4*256]; |
| size_t unpackedSize = SkPackBits::Unpack8(packedStorage, packedSize, |
| unpackedStorage, sizeof(unpackedStorage)); |
| // now check that we got the size we expected |
| if (!buffer.validate(unpackedSize == count*256)) { |
| return nullptr; |
| } |
| |
| const uint8_t* a = nullptr; |
| const uint8_t* r = nullptr; |
| const uint8_t* g = nullptr; |
| const uint8_t* b = nullptr; |
| const uint8_t* ptr = unpackedStorage; |
| |
| if (flags & kA_Flag) { |
| a = ptr; |
| ptr += 256; |
| } |
| if (flags & kR_Flag) { |
| r = ptr; |
| ptr += 256; |
| } |
| if (flags & kG_Flag) { |
| g = ptr; |
| ptr += 256; |
| } |
| if (flags & kB_Flag) { |
| b = ptr; |
| ptr += 256; |
| } |
| return SkTableColorFilter::MakeARGB(a, r, g, b); |
| } |
| |
| bool SkTable_ColorFilter::asComponentTable(SkBitmap* table) const { |
| if (table) { |
| if (nullptr == fBitmap) { |
| SkBitmap* bmp = new SkBitmap; |
| bmp->allocPixels(SkImageInfo::MakeA8(256, 4)); |
| uint8_t* bitmapPixels = bmp->getAddr8(0, 0); |
| int offset = 0; |
| static const unsigned kFlags[] = { kA_Flag, kR_Flag, kG_Flag, kB_Flag }; |
| |
| for (int x = 0; x < 4; ++x) { |
| if (!(fFlags & kFlags[x])) { |
| memcpy(bitmapPixels, gIdentityTable, sizeof(gIdentityTable)); |
| } else { |
| memcpy(bitmapPixels, fStorage + offset, 256); |
| offset += 256; |
| } |
| bitmapPixels += 256; |
| } |
| fBitmap = bmp; |
| } |
| *table = *fBitmap; |
| } |
| return true; |
| } |
| |
| // Combines the two lookup tables so that making a lookup using res[] has |
| // the same effect as making a lookup through inner[] then outer[]. |
| static void combine_tables(uint8_t res[256], const uint8_t outer[256], const uint8_t inner[256]) { |
| for (int i = 0; i < 256; i++) { |
| res[i] = outer[inner[i]]; |
| } |
| } |
| |
| sk_sp<SkColorFilter> SkTable_ColorFilter::makeComposed(sk_sp<SkColorFilter> innerFilter) const { |
| SkBitmap innerBM; |
| if (!innerFilter->asComponentTable(&innerBM)) { |
| return nullptr; |
| } |
| |
| innerBM.lockPixels(); |
| if (nullptr == innerBM.getPixels()) { |
| return nullptr; |
| } |
| |
| const uint8_t* table = fStorage; |
| const uint8_t* tableA = gIdentityTable; |
| const uint8_t* tableR = gIdentityTable; |
| const uint8_t* tableG = gIdentityTable; |
| const uint8_t* tableB = gIdentityTable; |
| if (fFlags & kA_Flag) { |
| tableA = table; table += 256; |
| } |
| if (fFlags & kR_Flag) { |
| tableR = table; table += 256; |
| } |
| if (fFlags & kG_Flag) { |
| tableG = table; table += 256; |
| } |
| if (fFlags & kB_Flag) { |
| tableB = table; |
| } |
| |
| uint8_t concatA[256]; |
| uint8_t concatR[256]; |
| uint8_t concatG[256]; |
| uint8_t concatB[256]; |
| |
| combine_tables(concatA, tableA, innerBM.getAddr8(0, 0)); |
| combine_tables(concatR, tableR, innerBM.getAddr8(0, 1)); |
| combine_tables(concatG, tableG, innerBM.getAddr8(0, 2)); |
| combine_tables(concatB, tableB, innerBM.getAddr8(0, 3)); |
| |
| return SkTableColorFilter::MakeARGB(concatA, concatR, concatG, concatB); |
| } |
| |
| #if SK_SUPPORT_GPU |
| |
| #include "GrContext.h" |
| #include "GrFragmentProcessor.h" |
| #include "GrInvariantOutput.h" |
| #include "SkGr.h" |
| #include "effects/GrTextureStripAtlas.h" |
| #include "glsl/GrGLSLFragmentProcessor.h" |
| #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| #include "glsl/GrGLSLProgramDataManager.h" |
| #include "glsl/GrGLSLUniformHandler.h" |
| |
| class ColorTableEffect : public GrFragmentProcessor { |
| public: |
| static sk_sp<GrFragmentProcessor> Make(GrContext* context, SkBitmap bitmap, unsigned flags); |
| |
| virtual ~ColorTableEffect(); |
| |
| const char* name() const override { return "ColorTable"; } |
| |
| const GrTextureStripAtlas* atlas() const { return fAtlas; } |
| int atlasRow() const { return fRow; } |
| |
| private: |
| GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
| |
| void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| |
| bool onIsEqual(const GrFragmentProcessor&) const override; |
| |
| void onComputeInvariantOutput(GrInvariantOutput* inout) const override; |
| |
| ColorTableEffect(GrTexture* texture, GrTextureStripAtlas* atlas, int row, unsigned flags); |
| |
| GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
| |
| GrTextureAccess fTextureAccess; |
| |
| // currently not used in shader code, just to assist onComputeInvariantOutput(). |
| unsigned fFlags; |
| |
| GrTextureStripAtlas* fAtlas; |
| int fRow; |
| |
| typedef GrFragmentProcessor INHERITED; |
| }; |
| |
| class GLColorTableEffect : public GrGLSLFragmentProcessor { |
| public: |
| void emitCode(EmitArgs&) override; |
| |
| static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder*) {} |
| |
| protected: |
| void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
| |
| private: |
| UniformHandle fRGBAYValuesUni; |
| typedef GrGLSLFragmentProcessor INHERITED; |
| }; |
| |
| void GLColorTableEffect::onSetData(const GrGLSLProgramDataManager& pdm, const GrProcessor& proc) { |
| // The textures are organized in a strip where the rows are ordered a, r, g, b. |
| float rgbaYValues[4]; |
| const ColorTableEffect& cte = proc.cast<ColorTableEffect>(); |
| if (cte.atlas()) { |
| SkScalar yDelta = cte.atlas()->getNormalizedTexelHeight(); |
| rgbaYValues[3] = cte.atlas()->getYOffset(cte.atlasRow()) + SK_ScalarHalf * yDelta; |
| rgbaYValues[0] = rgbaYValues[3] + yDelta; |
| rgbaYValues[1] = rgbaYValues[0] + yDelta; |
| rgbaYValues[2] = rgbaYValues[1] + yDelta; |
| } else { |
| rgbaYValues[3] = 0.125; |
| rgbaYValues[0] = 0.375; |
| rgbaYValues[1] = 0.625; |
| rgbaYValues[2] = 0.875; |
| } |
| pdm.set4fv(fRGBAYValuesUni, 1, rgbaYValues); |
| } |
| |
| void GLColorTableEffect::emitCode(EmitArgs& args) { |
| const char* yoffsets; |
| fRGBAYValuesUni = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, |
| kVec4f_GrSLType, kDefault_GrSLPrecision, |
| "yoffsets", &yoffsets); |
| static const float kColorScaleFactor = 255.0f / 256.0f; |
| static const float kColorOffsetFactor = 1.0f / 512.0f; |
| GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
| if (nullptr == args.fInputColor) { |
| // the input color is solid white (all ones). |
| static const float kMaxValue = kColorScaleFactor + kColorOffsetFactor; |
| fragBuilder->codeAppendf("\t\tvec4 coord = vec4(%f, %f, %f, %f);\n", |
| kMaxValue, kMaxValue, kMaxValue, kMaxValue); |
| |
| } else { |
| fragBuilder->codeAppendf("\t\tfloat nonZeroAlpha = max(%s.a, .0001);\n", args.fInputColor); |
| fragBuilder->codeAppendf("\t\tvec4 coord = vec4(%s.rgb / nonZeroAlpha, nonZeroAlpha);\n", |
| args.fInputColor); |
| fragBuilder->codeAppendf("\t\tcoord = coord * %f + vec4(%f, %f, %f, %f);\n", |
| kColorScaleFactor, |
| kColorOffsetFactor, kColorOffsetFactor, |
| kColorOffsetFactor, kColorOffsetFactor); |
| } |
| |
| SkString coord; |
| |
| fragBuilder->codeAppendf("\t\t%s.a = ", args.fOutputColor); |
| coord.printf("vec2(coord.a, %s.a)", yoffsets); |
| fragBuilder->appendTextureLookup(args.fTexSamplers[0], coord.c_str()); |
| fragBuilder->codeAppend(".a;\n"); |
| |
| fragBuilder->codeAppendf("\t\t%s.r = ", args.fOutputColor); |
| coord.printf("vec2(coord.r, %s.r)", yoffsets); |
| fragBuilder->appendTextureLookup(args.fTexSamplers[0], coord.c_str()); |
| fragBuilder->codeAppend(".a;\n"); |
| |
| fragBuilder->codeAppendf("\t\t%s.g = ", args.fOutputColor); |
| coord.printf("vec2(coord.g, %s.g)", yoffsets); |
| fragBuilder->appendTextureLookup(args.fTexSamplers[0], coord.c_str()); |
| fragBuilder->codeAppend(".a;\n"); |
| |
| fragBuilder->codeAppendf("\t\t%s.b = ", args.fOutputColor); |
| coord.printf("vec2(coord.b, %s.b)", yoffsets); |
| fragBuilder->appendTextureLookup(args.fTexSamplers[0], coord.c_str()); |
| fragBuilder->codeAppend(".a;\n"); |
| |
| fragBuilder->codeAppendf("\t\t%s.rgb *= %s.a;\n", args.fOutputColor, args.fOutputColor); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| sk_sp<GrFragmentProcessor> ColorTableEffect::Make(GrContext* context, SkBitmap bitmap, |
| unsigned flags) { |
| |
| GrTextureStripAtlas::Desc desc; |
| desc.fWidth = bitmap.width(); |
| desc.fHeight = 128; |
| desc.fRowHeight = bitmap.height(); |
| desc.fContext = context; |
| desc.fConfig = SkImageInfo2GrPixelConfig(bitmap.info(), *context->caps()); |
| GrTextureStripAtlas* atlas = GrTextureStripAtlas::GetAtlas(desc); |
| int row = atlas->lockRow(bitmap); |
| SkAutoTUnref<GrTexture> texture; |
| if (-1 == row) { |
| atlas = nullptr; |
| texture.reset(GrRefCachedBitmapTexture(context, bitmap, GrTextureParams::ClampNoFilter(), |
| SkSourceGammaTreatment::kRespect)); |
| } else { |
| texture.reset(SkRef(atlas->getTexture())); |
| } |
| |
| return sk_sp<GrFragmentProcessor>(new ColorTableEffect(texture, atlas, row, flags)); |
| } |
| |
| ColorTableEffect::ColorTableEffect(GrTexture* texture, GrTextureStripAtlas* atlas, int row, |
| unsigned flags) |
| : fTextureAccess(texture) |
| , fFlags(flags) |
| , fAtlas(atlas) |
| , fRow(row) { |
| this->initClassID<ColorTableEffect>(); |
| this->addTextureAccess(&fTextureAccess); |
| } |
| |
| ColorTableEffect::~ColorTableEffect() { |
| if (fAtlas) { |
| fAtlas->unlockRow(fRow); |
| } |
| } |
| |
| void ColorTableEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| GrProcessorKeyBuilder* b) const { |
| GLColorTableEffect::GenKey(*this, caps, b); |
| } |
| |
| GrGLSLFragmentProcessor* ColorTableEffect::onCreateGLSLInstance() const { |
| return new GLColorTableEffect; |
| } |
| |
| bool ColorTableEffect::onIsEqual(const GrFragmentProcessor& other) const { |
| // For non-atlased instances, the texture (compared by base class) is sufficient to |
| // differentiate different tables. For atlased instances we ensure they are using the |
| // same row. |
| const ColorTableEffect& that = other.cast<ColorTableEffect>(); |
| SkASSERT(SkToBool(fAtlas) == SkToBool(that.fAtlas)); |
| // Ok to always do this comparison since both would be -1 if non-atlased. |
| return fRow == that.fRow; |
| } |
| |
| void ColorTableEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { |
| // If we kept the table in the effect then we could actually run known inputs through the |
| // table. |
| GrColorComponentFlags invalidateFlags = kNone_GrColorComponentFlags; |
| if (fFlags & SkTable_ColorFilter::kR_Flag) { |
| invalidateFlags |= kR_GrColorComponentFlag; |
| } |
| if (fFlags & SkTable_ColorFilter::kG_Flag) { |
| invalidateFlags |= kG_GrColorComponentFlag; |
| } |
| if (fFlags & SkTable_ColorFilter::kB_Flag) { |
| invalidateFlags |= kB_GrColorComponentFlag; |
| } |
| if (fFlags & SkTable_ColorFilter::kA_Flag) { |
| invalidateFlags |= kA_GrColorComponentFlag; |
| } |
| inout->invalidateComponents(invalidateFlags, GrInvariantOutput::kWill_ReadInput); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_FRAGMENT_PROCESSOR_TEST(ColorTableEffect); |
| |
| sk_sp<GrFragmentProcessor> ColorTableEffect::TestCreate(GrProcessorTestData* d) { |
| int flags = 0; |
| uint8_t luts[256][4]; |
| do { |
| for (int i = 0; i < 4; ++i) { |
| flags |= d->fRandom->nextBool() ? (1 << i): 0; |
| } |
| } while (!flags); |
| for (int i = 0; i < 4; ++i) { |
| if (flags & (1 << i)) { |
| for (int j = 0; j < 256; ++j) { |
| luts[j][i] = SkToU8(d->fRandom->nextBits(8)); |
| } |
| } |
| } |
| auto filter(SkTableColorFilter::MakeARGB( |
| (flags & (1 << 0)) ? luts[0] : nullptr, |
| (flags & (1 << 1)) ? luts[1] : nullptr, |
| (flags & (1 << 2)) ? luts[2] : nullptr, |
| (flags & (1 << 3)) ? luts[3] : nullptr |
| )); |
| |
| sk_sp<GrFragmentProcessor> fp = filter->asFragmentProcessor(d->fContext); |
| SkASSERT(fp); |
| return fp; |
| } |
| |
| sk_sp<GrFragmentProcessor> SkTable_ColorFilter::asFragmentProcessor(GrContext* context) const { |
| SkBitmap bitmap; |
| this->asComponentTable(&bitmap); |
| |
| return ColorTableEffect::Make(context, bitmap, fFlags); |
| } |
| |
| #endif // SK_SUPPORT_GPU |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #ifdef SK_CPU_BENDIAN |
| #else |
| #define SK_A32_INDEX (3 - (SK_A32_SHIFT >> 3)) |
| #define SK_R32_INDEX (3 - (SK_R32_SHIFT >> 3)) |
| #define SK_G32_INDEX (3 - (SK_G32_SHIFT >> 3)) |
| #define SK_B32_INDEX (3 - (SK_B32_SHIFT >> 3)) |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| sk_sp<SkColorFilter> SkTableColorFilter::Make(const uint8_t table[256]) { |
| return sk_make_sp<SkTable_ColorFilter>(table, table, table, table); |
| } |
| |
| sk_sp<SkColorFilter> SkTableColorFilter::MakeARGB(const uint8_t tableA[256], |
| const uint8_t tableR[256], |
| const uint8_t tableG[256], |
| const uint8_t tableB[256]) { |
| return sk_make_sp<SkTable_ColorFilter>(tableA, tableR, tableG, tableB); |
| } |
| |
| SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkTableColorFilter) |
| SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTable_ColorFilter) |
| SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |
