1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "algo_filter.h"
17
18 namespace OHOS {
19 namespace Rosen {
AlgoFilter()20 AlgoFilter::AlgoFilter()
21 {
22 mesh_ = new Mesh();
23 mesh_->Use();
24 }
25
~AlgoFilter()26 AlgoFilter::~AlgoFilter()
27 {
28 delete program_;
29 delete mesh_;
30 }
31
Prepare(ProcessData & data)32 void AlgoFilter::Prepare(ProcessData& data)
33 {
34 glBindTexture(GL_TEXTURE_2D, data.dstTextureID);
35 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, data.textureWidth, data.textureHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
36 glBindFramebuffer(GL_FRAMEBUFFER, data.frameBufferID);
37 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, data.dstTextureID, 0);
38 glViewport(0, 0, data.textureWidth, data.textureHeight);
39 glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
40 glClear(GL_COLOR_BUFFER_BIT);
41 }
42
Draw(ProcessData & data)43 void AlgoFilter::Draw(ProcessData& data)
44 {
45 Use();
46 glBindVertexArray(mesh_->VAO_);
47 glBindTexture(GL_TEXTURE_2D, data.srcTextureID);
48 glDrawElements(GL_TRIANGLES, DRAW_ELEMENTS_NUMBER, GL_UNSIGNED_INT, 0);
49 glBindFramebuffer(GL_FRAMEBUFFER, 0);
50 }
51
CreateProgram(const std::string & vertexString,const std::string & fragmentString)52 void AlgoFilter::CreateProgram(const std::string& vertexString, const std::string& fragmentString)
53 {
54 program_ = new Program();
55 program_->Compile(vertexString, fragmentString);
56 }
57
Use()58 void AlgoFilter::Use()
59 {
60 if (program_ != nullptr) {
61 program_->UseProgram();
62 }
63 }
64
GetFilterType()65 FILTER_TYPE AlgoFilter::GetFilterType()
66 {
67 return FILTER_TYPE::ALGOFILTER;
68 }
69
DoProcess(ProcessData & data)70 void AlgoFilter::DoProcess(ProcessData& data)
71 {
72 Prepare(data);
73 LoadFilterParams();
74 Draw(data);
75 }
76 } // namespcae Rosen
77 } // namespace OHOS