epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2006 The Android Open Source Project |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 8 | #include "SkColorFilter.h" |
reed@google.com | 02f65f2 | 2012-08-06 21:20:05 +0000 | [diff] [blame] | 9 | #include "SkFilterShader.h" |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 10 | #include "SkFlattenableBuffers.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 11 | #include "SkShader.h" |
reed@google.com | 6b7aee3 | 2011-04-19 18:36:09 +0000 | [diff] [blame] | 12 | #include "SkUnPreMultiply.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 13 | |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 14 | SK_DEFINE_INST_COUNT(SkColorFilter) |
| 15 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 16 | bool SkColorFilter::asColorMode(SkColor* color, SkXfermode::Mode* mode) { |
| 17 | return false; |
| 18 | } |
| 19 | |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 20 | bool SkColorFilter::asColorMatrix(SkScalar matrix[20]) { |
| 21 | return false; |
| 22 | } |
| 23 | |
reed@google.com | 7191840 | 2012-01-05 17:24:35 +0000 | [diff] [blame] | 24 | bool SkColorFilter::asComponentTable(SkBitmap*) { |
| 25 | return false; |
| 26 | } |
| 27 | |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 28 | void SkColorFilter::filterSpan16(const uint16_t s[], int count, uint16_t d[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 29 | SkASSERT(this->getFlags() & SkColorFilter::kHasFilter16_Flag); |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 30 | SkDEBUGFAIL("missing implementation of SkColorFilter::filterSpan16"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 31 | |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 32 | if (d != s) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 33 | memcpy(d, s, count * sizeof(uint16_t)); |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 34 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 35 | } |
| 36 | |
reed@google.com | 6b7aee3 | 2011-04-19 18:36:09 +0000 | [diff] [blame] | 37 | SkColor SkColorFilter::filterColor(SkColor c) { |
| 38 | SkPMColor dst, src = SkPreMultiplyColor(c); |
| 39 | this->filterSpan(&src, 1, &dst); |
| 40 | return SkUnPreMultiply::PMColorToColor(dst); |
| 41 | } |
| 42 | |
bsalomon@google.com | 67e78c9 | 2012-10-17 13:36:14 +0000 | [diff] [blame^] | 43 | GrCustomStage* SkColorFilter::asNewCustomStage(GrContext*) const { |
| 44 | return NULL; |
| 45 | } |
| 46 | |
reed@google.com | 6b7aee3 | 2011-04-19 18:36:09 +0000 | [diff] [blame] | 47 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 48 | |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 49 | SkFilterShader::SkFilterShader(SkShader* shader, SkColorFilter* filter) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 50 | fShader = shader; shader->ref(); |
| 51 | fFilter = filter; filter->ref(); |
| 52 | } |
| 53 | |
| 54 | SkFilterShader::SkFilterShader(SkFlattenableReadBuffer& buffer) : |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 55 | INHERITED(buffer) { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 56 | fShader = buffer.readFlattenableT<SkShader>(); |
| 57 | fFilter = buffer.readFlattenableT<SkColorFilter>(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 58 | } |
| 59 | |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 60 | SkFilterShader::~SkFilterShader() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 61 | fFilter->unref(); |
| 62 | fShader->unref(); |
| 63 | } |
| 64 | |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 65 | void SkFilterShader::beginSession() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 66 | this->INHERITED::beginSession(); |
| 67 | fShader->beginSession(); |
| 68 | } |
| 69 | |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 70 | void SkFilterShader::endSession() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 71 | fShader->endSession(); |
| 72 | this->INHERITED::endSession(); |
| 73 | } |
| 74 | |
djsollen@google.com | 5492424 | 2012-03-29 15:18:04 +0000 | [diff] [blame] | 75 | void SkFilterShader::flatten(SkFlattenableWriteBuffer& buffer) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 76 | this->INHERITED::flatten(buffer); |
| 77 | buffer.writeFlattenable(fShader); |
| 78 | buffer.writeFlattenable(fFilter); |
| 79 | } |
| 80 | |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 81 | uint32_t SkFilterShader::getFlags() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 82 | uint32_t shaderF = fShader->getFlags(); |
| 83 | uint32_t filterF = fFilter->getFlags(); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 84 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 85 | // if the filter doesn't support 16bit, clear the matching bit in the shader |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 86 | if (!(filterF & SkColorFilter::kHasFilter16_Flag)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 87 | shaderF &= ~SkShader::kHasSpan16_Flag; |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 88 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 89 | // if the filter might change alpha, clear the opaque flag in the shader |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 90 | if (!(filterF & SkColorFilter::kAlphaUnchanged_Flag)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 91 | shaderF &= ~(SkShader::kOpaqueAlpha_Flag | SkShader::kHasSpan16_Flag); |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 92 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 93 | return shaderF; |
| 94 | } |
| 95 | |
| 96 | bool SkFilterShader::setContext(const SkBitmap& device, |
| 97 | const SkPaint& paint, |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 98 | const SkMatrix& matrix) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 99 | return this->INHERITED::setContext(device, paint, matrix) && |
| 100 | fShader->setContext(device, paint, matrix); |
| 101 | } |
| 102 | |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 103 | void SkFilterShader::shadeSpan(int x, int y, SkPMColor result[], int count) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 104 | fShader->shadeSpan(x, y, result, count); |
| 105 | fFilter->filterSpan(result, count, result); |
| 106 | } |
| 107 | |
reed@google.com | feb8cc8 | 2011-04-19 20:11:25 +0000 | [diff] [blame] | 108 | void SkFilterShader::shadeSpan16(int x, int y, uint16_t result[], int count) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 109 | SkASSERT(fShader->getFlags() & SkShader::kHasSpan16_Flag); |
| 110 | SkASSERT(fFilter->getFlags() & SkColorFilter::kHasFilter16_Flag); |
| 111 | |
| 112 | fShader->shadeSpan16(x, y, result, count); |
| 113 | fFilter->filterSpan16(result, count, result); |
| 114 | } |
| 115 | |