Method getGradient

src/gpu/GlobalCache.cpp:74–107

}

std::shared_ptr<TextureProxy> GlobalCache::getGradient(const Color* colors, const float* positions,
                                                       int count) {
  BytesKey bytesKey = {};
  for (int i = 0; i < count; ++i) {
    bytesKey.write(colors[i].red);
    bytesKey.write(colors[i].green);
    bytesKey.write(colors[i].blue);
    bytesKey.write(colors[i].alpha);
    bytesKey.write(positions[i]);
  }
  auto result = gradientTextures.find(bytesKey);
  if (result != gradientTextures.end()) {
    auto& texture = result->second;
    gradientLRU.erase(texture->cachedPosition);
    gradientLRU.push_front(texture.get());
    texture->cachedPosition = gradientLRU.begin();
    return texture->textureProxy;
  }
  auto generator = std::make_shared<GradientGenerator>(colors, positions, count);
  auto textureProxy = context->proxyProvider()->createTextureProxy(std::move(generator));
  if (textureProxy == nullptr) {
    return nullptr;
  }
  auto gradientTexture = std::make_unique<GradientTexture>(textureProxy, bytesKey);
  gradientLRU.push_front(gradientTexture.get());
  gradientTexture->cachedPosition = gradientLRU.begin();
  gradientTextures[bytesKey] = std::move(gradientTexture);
  while (gradientLRU.size() > MaxNumCachedGradientBitmaps) {
    auto texture = gradientLRU.back();
    gradientLRU.pop_back();
    gradientTextures.erase(texture->gradientKey);
  }
  return textureProxy;
}

// clang-format off
static constexpr uint16_t NonAAQuadIndexPattern[] = {