| |
| #include "SkBitmap.h" |
| #include "SkTableColorFilter.h" |
| #include "SkColorPriv.h" |
| #include "SkReadBuffer.h" |
| #include "SkWriteBuffer.h" |
| #include "SkUnPreMultiply.h" |
| #include "SkString.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 = NULL; |
| 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() { |
| SkDELETE(fBitmap); |
| } |
| |
| virtual bool asComponentTable(SkBitmap* table) const SK_OVERRIDE; |
| |
| #if SK_SUPPORT_GPU |
| virtual GrFragmentProcessor* asFragmentProcessor(GrContext* context) const SK_OVERRIDE; |
| #endif |
| |
| virtual void filterSpan(const SkPMColor src[], int count, |
| SkPMColor dst[]) const SK_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: |
| #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING |
| SkTable_ColorFilter(SkReadBuffer& buffer); |
| #endif |
| virtual void flatten(SkWriteBuffer&) const SK_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 { |
| str->append("SkTable_ColorFilter"); |
| } |
| #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); |
| SkASSERT(size <= sizeof(storage)); |
| |
| buffer.write32(fFlags); |
| buffer.writeByteArray(storage, size); |
| } |
| |
| 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 NULL; |
| } |
| if (!buffer.readByteArray(packedStorage, packedSize)) { |
| return NULL; |
| } |
| |
| uint8_t unpackedStorage[4*256]; |
| size_t unpackedSize = SkPackBits::Unpack8(packedStorage, packedSize, unpackedStorage); |
| // now check that we got the size we expected |
| if (!buffer.validate(unpackedSize == count*256)) { |
| return NULL; |
| } |
| |
| const uint8_t* a = NULL; |
| const uint8_t* r = NULL; |
| const uint8_t* g = NULL; |
| const uint8_t* b = NULL; |
| 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::CreateARGB(a, r, g, b); |
| } |
| |
| #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING |
| SkTable_ColorFilter::SkTable_ColorFilter(SkReadBuffer& buffer) : INHERITED(buffer) { |
| fBitmap = NULL; |
| |
| uint8_t storage[5*256]; |
| |
| fFlags = buffer.readInt(); |
| |
| size_t size = buffer.getArrayCount(); |
| SkASSERT(size <= sizeof(storage)); |
| buffer.validate(size <= sizeof(storage)); |
| buffer.readByteArray(storage, size); |
| |
| SkDEBUGCODE(size_t raw = ) SkPackBits::Unpack8(storage, size, fStorage); |
| |
| SkASSERT(raw <= sizeof(fStorage)); |
| SkDEBUGCODE(size_t count = gCountNibBits[fFlags & 0xF]); |
| SkASSERT(raw == count * 256); |
| } |
| #endif |
| |
| bool SkTable_ColorFilter::asComponentTable(SkBitmap* table) const { |
| if (table) { |
| if (NULL == fBitmap) { |
| SkBitmap* bmp = SkNEW(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; |
| } |
| |
| #if SK_SUPPORT_GPU |
| |
| #include "GrProcessor.h" |
| #include "GrTBackendProcessorFactory.h" |
| #include "gl/GrGLProcessor.h" |
| #include "gl/builders/GrGLProgramBuilder.h" |
| #include "SkGr.h" |
| |
| class GLColorTableEffect; |
| |
| class ColorTableEffect : public GrFragmentProcessor { |
| public: |
| static GrFragmentProcessor* Create(GrTexture* texture, unsigned flags) { |
| return SkNEW_ARGS(ColorTableEffect, (texture, flags)); |
| } |
| |
| virtual ~ColorTableEffect(); |
| |
| static const char* Name() { return "ColorTable"; } |
| virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE; |
| |
| virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE; |
| |
| typedef GLColorTableEffect GLProcessor; |
| |
| private: |
| virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE; |
| |
| explicit ColorTableEffect(GrTexture* texture, unsigned flags); |
| |
| GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
| |
| GrTextureAccess fTextureAccess; |
| unsigned fFlags; // currently not used in shader code, just to assist |
| // getConstantColorComponents(). |
| |
| typedef GrFragmentProcessor INHERITED; |
| }; |
| |
| class GLColorTableEffect : public GrGLFragmentProcessor { |
| public: |
| GLColorTableEffect(const GrBackendProcessorFactory&, const GrProcessor&); |
| |
| virtual void emitCode(GrGLProgramBuilder*, |
| const GrFragmentProcessor&, |
| const GrProcessorKey&, |
| const char* outputColor, |
| const char* inputColor, |
| const TransformedCoordsArray&, |
| const TextureSamplerArray&) SK_OVERRIDE; |
| |
| virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE {} |
| |
| static void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKeyBuilder* b) {} |
| |
| private: |
| |
| typedef GrGLFragmentProcessor INHERITED; |
| }; |
| |
| GLColorTableEffect::GLColorTableEffect(const GrBackendProcessorFactory& factory, const GrProcessor&) |
| : INHERITED(factory) { |
| } |
| |
| void GLColorTableEffect::emitCode(GrGLProgramBuilder* builder, |
| const GrFragmentProcessor&, |
| const GrProcessorKey&, |
| const char* outputColor, |
| const char* inputColor, |
| const TransformedCoordsArray&, |
| const TextureSamplerArray& samplers) { |
| |
| static const float kColorScaleFactor = 255.0f / 256.0f; |
| static const float kColorOffsetFactor = 1.0f / 512.0f; |
| GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
| if (NULL == inputColor) { |
| // the input color is solid white (all ones). |
| static const float kMaxValue = kColorScaleFactor + kColorOffsetFactor; |
| fsBuilder->codeAppendf("\t\tvec4 coord = vec4(%f, %f, %f, %f);\n", |
| kMaxValue, kMaxValue, kMaxValue, kMaxValue); |
| |
| } else { |
| fsBuilder->codeAppendf("\t\tfloat nonZeroAlpha = max(%s.a, .0001);\n", inputColor); |
| fsBuilder->codeAppendf("\t\tvec4 coord = vec4(%s.rgb / nonZeroAlpha, nonZeroAlpha);\n", inputColor); |
| fsBuilder->codeAppendf("\t\tcoord = coord * %f + vec4(%f, %f, %f, %f);\n", |
| kColorScaleFactor, |
| kColorOffsetFactor, kColorOffsetFactor, |
| kColorOffsetFactor, kColorOffsetFactor); |
| } |
| |
| fsBuilder->codeAppendf("\t\t%s.a = ", outputColor); |
| fsBuilder->appendTextureLookup(samplers[0], "vec2(coord.a, 0.125)"); |
| fsBuilder->codeAppend(";\n"); |
| |
| fsBuilder->codeAppendf("\t\t%s.r = ", outputColor); |
| fsBuilder->appendTextureLookup(samplers[0], "vec2(coord.r, 0.375)"); |
| fsBuilder->codeAppend(";\n"); |
| |
| fsBuilder->codeAppendf("\t\t%s.g = ", outputColor); |
| fsBuilder->appendTextureLookup(samplers[0], "vec2(coord.g, 0.625)"); |
| fsBuilder->codeAppend(";\n"); |
| |
| fsBuilder->codeAppendf("\t\t%s.b = ", outputColor); |
| fsBuilder->appendTextureLookup(samplers[0], "vec2(coord.b, 0.875)"); |
| fsBuilder->codeAppend(";\n"); |
| |
| fsBuilder->codeAppendf("\t\t%s.rgb *= %s.a;\n", outputColor, outputColor); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| ColorTableEffect::ColorTableEffect(GrTexture* texture, unsigned flags) |
| : fTextureAccess(texture, "a") |
| , fFlags(flags) { |
| this->addTextureAccess(&fTextureAccess); |
| } |
| |
| ColorTableEffect::~ColorTableEffect() { |
| } |
| |
| const GrBackendFragmentProcessorFactory& ColorTableEffect::getFactory() const { |
| return GrTBackendFragmentProcessorFactory<ColorTableEffect>::getInstance(); |
| } |
| |
| bool ColorTableEffect::onIsEqual(const GrProcessor& sBase) const { |
| return this->texture(0) == sBase.texture(0); |
| } |
| |
| void ColorTableEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const { |
| // If we kept the table in the effect then we could actually run known inputs through the |
| // table. |
| if (fFlags & SkTable_ColorFilter::kR_Flag) { |
| *validFlags &= ~kR_GrColorComponentFlag; |
| } |
| if (fFlags & SkTable_ColorFilter::kG_Flag) { |
| *validFlags &= ~kG_GrColorComponentFlag; |
| } |
| if (fFlags & SkTable_ColorFilter::kB_Flag) { |
| *validFlags &= ~kB_GrColorComponentFlag; |
| } |
| if (fFlags & SkTable_ColorFilter::kA_Flag) { |
| *validFlags &= ~kA_GrColorComponentFlag; |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_FRAGMENT_PROCESSOR_TEST(ColorTableEffect); |
| |
| GrFragmentProcessor* ColorTableEffect::TestCreate(SkRandom* random, |
| GrContext* context, |
| const GrDrawTargetCaps&, |
| GrTexture* textures[]) { |
| static unsigned kAllFlags = SkTable_ColorFilter::kR_Flag | SkTable_ColorFilter::kG_Flag | |
| SkTable_ColorFilter::kB_Flag | SkTable_ColorFilter::kA_Flag; |
| return ColorTableEffect::Create(textures[GrProcessorUnitTest::kAlphaTextureIdx], kAllFlags); |
| } |
| |
| GrFragmentProcessor* SkTable_ColorFilter::asFragmentProcessor(GrContext* context) const { |
| SkBitmap bitmap; |
| this->asComponentTable(&bitmap); |
| // passing NULL because this effect does no tiling or filtering. |
| SkAutoTUnref<GrTexture> texture(GrRefCachedBitmapTexture(context, bitmap, NULL)); |
| return texture ? ColorTableEffect::Create(texture, fFlags) : NULL; |
| } |
| |
| #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 |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkColorFilter* SkTableColorFilter::Create(const uint8_t table[256]) { |
| return SkNEW_ARGS(SkTable_ColorFilter, (table, table, table, table)); |
| } |
| |
| SkColorFilter* SkTableColorFilter::CreateARGB(const uint8_t tableA[256], |
| const uint8_t tableR[256], |
| const uint8_t tableG[256], |
| const uint8_t tableB[256]) { |
| return SkNEW_ARGS(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 |