use shared EGLContext for ANGLE on Windows
This commit is contained in:
Nick Fisher
230
windows/flutter_angle_texture.cpp
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230
windows/flutter_angle_texture.cpp
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#include "flutter_angle_texture.h"
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#include <flutter/method_channel.h>
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#include <flutter/plugin_registrar_windows.h>
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#include <flutter/standard_method_codec.h>
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#include <flutter/texture_registrar.h>
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#include "backend/platforms/PlatformEGL.h"
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#include <thread>
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namespace polyvox_filament {
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static void logEglError(const char *name) noexcept {
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const char *err;
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switch (eglGetError()) {
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case EGL_NOT_INITIALIZED:
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err = "EGL_NOT_INITIALIZED";
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break;
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case EGL_BAD_ACCESS:
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err = "EGL_BAD_ACCESS";
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break;
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case EGL_BAD_ALLOC:
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err = "EGL_BAD_ALLOC";
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break;
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case EGL_BAD_ATTRIBUTE:
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err = "EGL_BAD_ATTRIBUTE";
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break;
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case EGL_BAD_CONTEXT:
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err = "EGL_BAD_CONTEXT";
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break;
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case EGL_BAD_CONFIG:
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err = "EGL_BAD_CONFIG";
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break;
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case EGL_BAD_CURRENT_SURFACE:
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err = "EGL_BAD_CURRENT_SURFACE";
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break;
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case EGL_BAD_DISPLAY:
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err = "EGL_BAD_DISPLAY";
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break;
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case EGL_BAD_SURFACE:
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err = "EGL_BAD_SURFACE";
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break;
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case EGL_BAD_MATCH:
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err = "EGL_BAD_MATCH";
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break;
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case EGL_BAD_PARAMETER:
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err = "EGL_BAD_PARAMETER";
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break;
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case EGL_BAD_NATIVE_PIXMAP:
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err = "EGL_BAD_NATIVE_PIXMAP";
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break;
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case EGL_BAD_NATIVE_WINDOW:
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err = "EGL_BAD_NATIVE_WINDOW";
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break;
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case EGL_CONTEXT_LOST:
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err = "EGL_CONTEXT_LOST";
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break;
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default:
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err = "unknown";
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break;
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}
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std::cout << name << " failed with " << err << std::endl;
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}
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void FlutterAngleTexture::RenderCallback() {
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_D3D11DeviceContext->CopyResource(_externalD3DTexture2D.Get(),
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_internalD3DTexture2D.Get());
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_D3D11DeviceContext->Flush();
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}
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FlutterAngleTexture::FlutterAngleTexture(
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flutter::PluginRegistrarWindows *pluginRegistrar,
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flutter::TextureRegistrar *textureRegistrar,
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std::unique_ptr<flutter::MethodResult<flutter::EncodableValue>> result,
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uint32_t width, uint32_t height, ID3D11Device *D3D11Device,
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ID3D11DeviceContext *D3D11DeviceContext, EGLConfig eglConfig,
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EGLDisplay eglDisplay, EGLContext eglContext)
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: _pluginRegistrar(pluginRegistrar), _textureRegistrar(textureRegistrar),
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_width(width), _height(height), _D3D11Device(D3D11Device),
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_D3D11DeviceContext(D3D11DeviceContext), _eglConfig(eglConfig),
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_eglDisplay(eglDisplay), _eglContext(eglContext) {
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auto d3d11_texture2D_desc = D3D11_TEXTURE2D_DESC{0};
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d3d11_texture2D_desc.Width = width;
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d3d11_texture2D_desc.Height = height;
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d3d11_texture2D_desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
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d3d11_texture2D_desc.MipLevels = 1;
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d3d11_texture2D_desc.ArraySize = 1;
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d3d11_texture2D_desc.SampleDesc.Count = 1;
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d3d11_texture2D_desc.SampleDesc.Quality = 0;
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d3d11_texture2D_desc.Usage = D3D11_USAGE_DEFAULT;
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d3d11_texture2D_desc.BindFlags =
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D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
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d3d11_texture2D_desc.CPUAccessFlags = 0;
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d3d11_texture2D_desc.MiscFlags = D3D11_RESOURCE_MISC_SHARED;
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// create internal texture
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auto hr = _D3D11Device->CreateTexture2D(&d3d11_texture2D_desc, nullptr,
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&_internalD3DTexture2D);
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if FAILED (hr) {
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result->Error("ERROR", "Failed to create D3D texture", nullptr);
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return;
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;
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}
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auto resource = Microsoft::WRL::ComPtr<IDXGIResource>{};
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hr = _internalD3DTexture2D.As(&resource);
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if FAILED (hr) {
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result->Error("ERROR", "Failed to create D3D texture", nullptr);
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return;
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;
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}
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hr = resource->GetSharedHandle(&_internalD3DTextureHandle);
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if FAILED (hr) {
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result->Error("ERROR", "Failed to get shared handle to D3D texture",
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nullptr);
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return;
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;
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}
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_internalD3DTexture2D->AddRef();
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std::cout << "Created internal D3D texture" << std::endl;
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// external
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hr = _D3D11Device->CreateTexture2D(&d3d11_texture2D_desc, nullptr,
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&_externalD3DTexture2D);
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if FAILED (hr) {
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result->Error("ERROR", "Failed to create D3D texture", nullptr);
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return;
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;
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}
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hr = _externalD3DTexture2D.As(&resource);
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if FAILED (hr) {
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result->Error("ERROR", "Failed to create D3D texture", nullptr);
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return;
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;
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}
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hr = resource->GetSharedHandle(&_externalD3DTextureHandle);
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if FAILED (hr) {
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result->Error("ERROR",
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"Failed to get shared handle to external D3D texture",
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nullptr);
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return;
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;
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}
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_externalD3DTexture2D->AddRef();
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std::cout << "Created external D3D texture" << std::endl;
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EGLint pbufferAttribs[] = {
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EGL_WIDTH, width, EGL_HEIGHT, height,
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EGL_TEXTURE_TARGET, EGL_TEXTURE_2D, EGL_TEXTURE_FORMAT, EGL_TEXTURE_RGBA,
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EGL_NONE,
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};
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auto surface = eglCreatePbufferFromClientBuffer(
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_eglDisplay, EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE,
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_internalD3DTextureHandle, _eglConfig, pbufferAttribs);
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if (!eglMakeCurrent(_eglDisplay, surface, surface, _eglContext)) {
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// eglMakeCurrent failed
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logEglError("eglMakeCurrent");
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return;
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}
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glGenTextures(1, &glTextureId);
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if (glTextureId == 0) {
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std::cout
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<< "Failed to generate OpenGL texture for ANGLE, OpenGL err was %d",
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glGetError();
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return;
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}
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glBindTexture(GL_TEXTURE_2D, glTextureId);
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eglBindTexImage(_eglDisplay, surface, EGL_BACK_BUFFER);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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// clearGlError
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GLenum const error = glGetError();
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if (error != GL_NO_ERROR) {
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std::cout << "Ignoring pending GL error " << error << std::endl;
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}
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char const *version;
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version = (char const *)glGetString(GL_VERSION);
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std::cout << "Got version " << version << std::endl;
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EGLint major, minor;
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glGetIntegerv(GL_MAJOR_VERSION, &major);
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glGetIntegerv(GL_MINOR_VERSION, &minor);
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// platform = new filament::backend::PlatformANGLE(_internalD3DTextureHandle,
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// width, height);
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platform = new filament::backend::PlatformEGL(); //_internalD3DTextureHandle,
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//width, height);
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_textureDescriptor = std::make_unique<FlutterDesktopGpuSurfaceDescriptor>();
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_textureDescriptor->struct_size = sizeof(FlutterDesktopGpuSurfaceDescriptor);
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_textureDescriptor->handle = _externalD3DTextureHandle;
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_textureDescriptor->width = _textureDescriptor->visible_width = width;
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_textureDescriptor->height = _textureDescriptor->visible_height = height;
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_textureDescriptor->release_context = nullptr;
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_textureDescriptor->release_callback = [](void *release_context) {
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};
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_textureDescriptor->format = kFlutterDesktopPixelFormatBGRA8888;
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texture =
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std::make_unique<flutter::TextureVariant>(flutter::GpuSurfaceTexture(
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kFlutterDesktopGpuSurfaceTypeDxgiSharedHandle,
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[&](auto, auto) { return _textureDescriptor.get(); }));
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flutterTextureId = _textureRegistrar->RegisterTexture(texture.get());
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std::cout << "Registered Flutter texture ID " << flutterTextureId
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<< std::endl;
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std::vector<flutter::EncodableValue> resultList;
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resultList.push_back(flutter::EncodableValue(flutterTextureId));
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resultList.push_back(flutter::EncodableValue((int64_t) nullptr));
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resultList.push_back(flutter::EncodableValue(glTextureId));
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result->Success(resultList);
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}
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FlutterAngleTexture::~FlutterAngleTexture() {}
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} // namespace polyvox_filament
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