mirror of
https://github.com/encounter/engine.git
synced 2026-03-30 11:09:55 -07:00
Chinmay Garde
93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/shell/platform/android/android_external_texture_gl.h"
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// #include <GLES/gl.h>
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#include <GLES/glext.h>
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#include "flutter/common/threads.h"
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#include "flutter/shell/platform/android/platform_view_android_jni.h"
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#include "third_party/skia/include/gpu/GrTexture.h"
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namespace shell {
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AndroidExternalTextureGL::AndroidExternalTextureGL(
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int64_t id,
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const fml::jni::JavaObjectWeakGlobalRef& surfaceTexture)
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: Texture(id), surface_texture_(surfaceTexture) {}
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AndroidExternalTextureGL::~AndroidExternalTextureGL() = default;
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void AndroidExternalTextureGL::OnGrContextCreated() {
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ASSERT_IS_GPU_THREAD;
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state_ = AttachmentState::uninitialized;
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}
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void AndroidExternalTextureGL::MarkNewFrameAvailable() {
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ASSERT_IS_GPU_THREAD;
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new_frame_ready_ = true;
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}
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void AndroidExternalTextureGL::Paint(SkCanvas& canvas, const SkRect& bounds) {
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ASSERT_IS_GPU_THREAD;
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if (state_ == AttachmentState::detached) {
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return;
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}
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if (state_ == AttachmentState::uninitialized) {
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glGenTextures(1, &texture_name_);
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Attach(static_cast<jint>(texture_name_));
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state_ = AttachmentState::attached;
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}
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if (new_frame_ready_) {
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Update();
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new_frame_ready_ = false;
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}
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GrGLTextureInfo textureInfo = {GL_TEXTURE_EXTERNAL_OES, texture_name_};
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GrBackendTexture backendTexture(bounds.width(), bounds.height(),
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kRGBA_8888_GrPixelConfig, textureInfo);
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sk_sp<SkImage> image = SkImage::MakeFromTexture(
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canvas.getGrContext(), backendTexture, kTopLeft_GrSurfaceOrigin,
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SkAlphaType::kPremul_SkAlphaType, nullptr);
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if (image) {
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canvas.drawImage(image, bounds.x(), bounds.y());
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}
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}
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void AndroidExternalTextureGL::OnGrContextDestroyed() {
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ASSERT_IS_GPU_THREAD;
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if (state_ == AttachmentState::attached) {
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Detach();
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}
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state_ = AttachmentState::detached;
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}
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void AndroidExternalTextureGL::Attach(jint textureName) {
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JNIEnv* env = fml::jni::AttachCurrentThread();
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fml::jni::ScopedJavaLocalRef<jobject> surfaceTexture =
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surface_texture_.get(env);
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if (!surfaceTexture.is_null()) {
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SurfaceTextureAttachToGLContext(env, surfaceTexture.obj(), textureName);
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}
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}
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void AndroidExternalTextureGL::Update() {
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JNIEnv* env = fml::jni::AttachCurrentThread();
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fml::jni::ScopedJavaLocalRef<jobject> surfaceTexture =
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surface_texture_.get(env);
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if (!surfaceTexture.is_null()) {
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SurfaceTextureUpdateTexImage(env, surfaceTexture.obj());
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}
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}
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void AndroidExternalTextureGL::Detach() {
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JNIEnv* env = fml::jni::AttachCurrentThread();
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fml::jni::ScopedJavaLocalRef<jobject> surfaceTexture =
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surface_texture_.get(env);
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if (!surfaceTexture.is_null()) {
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SurfaceTextureDetachFromGLContext(env, surfaceTexture.obj());
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}
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}
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} // namespace shell
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