xref: /aosp_15_r20/frameworks/base/libs/hwui/canvas/CanvasOpRasterizer.cpp (revision d57664e9bc4670b3ecf6748a746a57c557b6bc9e)
1*d57664e9SAndroid Build Coastguard Worker /*
2*d57664e9SAndroid Build Coastguard Worker  * Copyright (C) 2020 The Android Open Source Project
3*d57664e9SAndroid Build Coastguard Worker  *
4*d57664e9SAndroid Build Coastguard Worker  * Licensed under the Apache License, Version 2.0 (the "License");
5*d57664e9SAndroid Build Coastguard Worker  * you may not use this file except in compliance with the License.
6*d57664e9SAndroid Build Coastguard Worker  * You may obtain a copy of the License at
7*d57664e9SAndroid Build Coastguard Worker  *
8*d57664e9SAndroid Build Coastguard Worker  *      http://www.apache.org/licenses/LICENSE-2.0
9*d57664e9SAndroid Build Coastguard Worker  *
10*d57664e9SAndroid Build Coastguard Worker  * Unless required by applicable law or agreed to in writing, software
11*d57664e9SAndroid Build Coastguard Worker  * distributed under the License is distributed on an "AS IS" BASIS,
12*d57664e9SAndroid Build Coastguard Worker  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13*d57664e9SAndroid Build Coastguard Worker  * See the License for the specific language governing permissions and
14*d57664e9SAndroid Build Coastguard Worker  * limitations under the License.
15*d57664e9SAndroid Build Coastguard Worker  */
16*d57664e9SAndroid Build Coastguard Worker 
17*d57664e9SAndroid Build Coastguard Worker #include "CanvasOpRasterizer.h"
18*d57664e9SAndroid Build Coastguard Worker 
19*d57664e9SAndroid Build Coastguard Worker #include <SkCanvas.h>
20*d57664e9SAndroid Build Coastguard Worker #include <log/log.h>
21*d57664e9SAndroid Build Coastguard Worker 
22*d57664e9SAndroid Build Coastguard Worker #include <vector>
23*d57664e9SAndroid Build Coastguard Worker 
24*d57664e9SAndroid Build Coastguard Worker #include "CanvasOpBuffer.h"
25*d57664e9SAndroid Build Coastguard Worker #include "CanvasOps.h"
26*d57664e9SAndroid Build Coastguard Worker 
27*d57664e9SAndroid Build Coastguard Worker namespace android::uirenderer {
28*d57664e9SAndroid Build Coastguard Worker 
rasterizeCanvasBuffer(const CanvasOpBuffer & source,SkCanvas * destination)29*d57664e9SAndroid Build Coastguard Worker void rasterizeCanvasBuffer(const CanvasOpBuffer& source, SkCanvas* destination) {
30*d57664e9SAndroid Build Coastguard Worker     // Tracks the global transform from the current display list back toward the display space
31*d57664e9SAndroid Build Coastguard Worker     // Push on beginning a RenderNode draw, pop on ending one
32*d57664e9SAndroid Build Coastguard Worker     std::vector<SkMatrix> globalMatrixStack;
33*d57664e9SAndroid Build Coastguard Worker     SkMatrix& currentGlobalTransform = globalMatrixStack.emplace_back(SkMatrix::I());
34*d57664e9SAndroid Build Coastguard Worker 
35*d57664e9SAndroid Build Coastguard Worker     source.for_each([&]<CanvasOpType T>(const CanvasOpContainer<T> * op) {
36*d57664e9SAndroid Build Coastguard Worker         if constexpr (CanvasOpTraits::can_draw<CanvasOp<T>>) {
37*d57664e9SAndroid Build Coastguard Worker             // Generic OP
38*d57664e9SAndroid Build Coastguard Worker             // First apply the current transformation
39*d57664e9SAndroid Build Coastguard Worker             destination->setMatrix(SkMatrix::Concat(currentGlobalTransform, op->transform()));
40*d57664e9SAndroid Build Coastguard Worker             // Now draw it
41*d57664e9SAndroid Build Coastguard Worker             (*op)->draw(destination);
42*d57664e9SAndroid Build Coastguard Worker             return;
43*d57664e9SAndroid Build Coastguard Worker         }
44*d57664e9SAndroid Build Coastguard Worker         LOG_ALWAYS_FATAL("TODO, unable to rasterize %d", static_cast<int>(T));
45*d57664e9SAndroid Build Coastguard Worker     });
46*d57664e9SAndroid Build Coastguard Worker }
47*d57664e9SAndroid Build Coastguard Worker 
48*d57664e9SAndroid Build Coastguard Worker }  // namespace android::uirenderer
49