| // Copyright 2019 The Cobalt Authors. All Rights Reserved. |
| // |
| // 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 "starboard/blitter.h" |
| |
| #include "starboard/common/log.h" |
| #include "starboard/shared/blittergles/blitter_context.h" |
| #include "starboard/shared/blittergles/blitter_internal.h" |
| |
| bool SbBlitterSetColor(SbBlitterContext context, SbBlitterColor color) { |
| if (!SbBlitterIsContextValid(context)) { |
| SB_DLOG(ERROR) << ": Invalid context."; |
| return false; |
| } |
| |
| const float kColorMapper = 255.0f; |
| float alpha = SbBlitterAFromColor(color) / kColorMapper; |
| context->current_rgba[0] = |
| alpha * (SbBlitterRFromColor(color) / kColorMapper); |
| context->current_rgba[1] = |
| alpha * (SbBlitterGFromColor(color) / kColorMapper); |
| context->current_rgba[2] = |
| alpha * (SbBlitterBFromColor(color) / kColorMapper); |
| context->current_rgba[3] = alpha; |
| return true; |
| } |