90 lines
2.2 KiB
C++
90 lines
2.2 KiB
C++
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <cstdint>
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#include <map>
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#include <EGL/egl.h>
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struct ANativeWindow;
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struct EglSurface {
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static std::map<uint32_t, EglSurface*> map;
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static uint32_t nextId;
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EglSurface(EGLConfig config_, uint32_t ctx_, uint32_t width_, uint32_t height_)
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: create_ctx(ctx_), config(config_), height(height_), width(width_), id(nextId++) {
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map.emplace(id, this);
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}
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~EglSurface() {
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map.erase(id);
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}
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EglSurface* bind(uint32_t ctx_, bool read_) {
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for (auto const& it : EglSurface::map) {
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EglSurface* sur = it.second;
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if (sur == this)
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continue;
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if (sur->bound_ctx == ctx_) {
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if (read_ && sur->read)
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return sur;
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if (!read_ && sur->draw)
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return sur;
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}
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}
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if (read_) {
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read = true;
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} else {
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draw = true;
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}
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bound_ctx = ctx_;
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return nullptr;
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}
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void unbind(bool read_) {
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if (read || draw) {
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if (read_)
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read = false;
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else
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draw = false;
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if (read || draw)
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return;
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bound_ctx = 0U;
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}
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return;
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}
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bool disposable() {
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return surface == EGL_NO_SURFACE && bound_ctx == 0U;
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}
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EGLSurface surface = EGL_NO_SURFACE;
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ANativeWindow* window = nullptr;
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uint32_t create_ctx;
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EGLConfig config;
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uint32_t height;
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uint32_t width;
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uint32_t id;
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private:
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uint32_t bound_ctx = 0U;
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bool draw = false;
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bool read = false;
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};
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