| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "SkiaColorFilter.h" |
| |
| namespace android { |
| namespace uirenderer { |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Base color filter |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkiaColorFilter::SkiaColorFilter(SkColorFilter *skFilter, Type type, bool blend): |
| mType(type), mBlend(blend), mSkFilter(skFilter) { |
| } |
| |
| SkiaColorFilter::~SkiaColorFilter() { |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Color matrix filter |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkiaColorMatrixFilter::SkiaColorMatrixFilter(SkColorFilter *skFilter, float* matrix, float* vector): |
| SkiaColorFilter(skFilter, kColorMatrix, true), mMatrix(matrix), mVector(vector) { |
| // Skia uses the range [0..255] for the addition vector, but we need |
| // the [0..1] range to apply the vector in GLSL |
| for (int i = 0; i < 4; i++) { |
| mVector[i] /= 255.0f; |
| } |
| } |
| |
| SkiaColorMatrixFilter::~SkiaColorMatrixFilter() { |
| delete[] mMatrix; |
| delete[] mVector; |
| } |
| |
| void SkiaColorMatrixFilter::describe(ProgramDescription& description, |
| const Extensions& extensions) { |
| description.colorOp = ProgramDescription::kColorMatrix; |
| } |
| |
| void SkiaColorMatrixFilter::setupProgram(Program* program) { |
| glUniformMatrix4fv(program->getUniform("colorMatrix"), 1, GL_FALSE, &mMatrix[0]); |
| glUniform4fv(program->getUniform("colorMatrixVector"), 1, mVector); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Lighting color filter |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkiaLightingFilter::SkiaLightingFilter(SkColorFilter *skFilter, int multiply, int add): |
| SkiaColorFilter(skFilter, kLighting, true) { |
| mMulR = ((multiply >> 16) & 0xFF) / 255.0f; |
| mMulG = ((multiply >> 8) & 0xFF) / 255.0f; |
| mMulB = ((multiply ) & 0xFF) / 255.0f; |
| |
| mAddR = ((add >> 16) & 0xFF) / 255.0f; |
| mAddG = ((add >> 8) & 0xFF) / 255.0f; |
| mAddB = ((add ) & 0xFF) / 255.0f; |
| } |
| |
| void SkiaLightingFilter::describe(ProgramDescription& description, const Extensions& extensions) { |
| description.colorOp = ProgramDescription::kColorLighting; |
| } |
| |
| void SkiaLightingFilter::setupProgram(Program* program) { |
| glUniform4f(program->getUniform("lightingMul"), mMulR, mMulG, mMulB, 1.0f); |
| glUniform4f(program->getUniform("lightingAdd"), mAddR, mAddG, mAddB, 0.0f); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Blend color filter |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkiaBlendFilter::SkiaBlendFilter(SkColorFilter *skFilter, int color, SkXfermode::Mode mode): |
| SkiaColorFilter(skFilter, kBlend, true), mMode(mode) { |
| const int alpha = (color >> 24) & 0xFF; |
| mA = alpha / 255.0f; |
| mR = mA * ((color >> 16) & 0xFF) / 255.0f; |
| mG = mA * ((color >> 8) & 0xFF) / 255.0f; |
| mB = mA * ((color ) & 0xFF) / 255.0f; |
| } |
| |
| void SkiaBlendFilter::describe(ProgramDescription& description, const Extensions& extensions) { |
| description.colorOp = ProgramDescription::kColorBlend; |
| description.colorMode = mMode; |
| } |
| |
| void SkiaBlendFilter::setupProgram(Program* program) { |
| glUniform4f(program->getUniform("colorBlend"), mR, mG, mB, mA); |
| } |
| |
| }; // namespace uirenderer |
| }; // namespace android |