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ec18f9683c
This will help migrate PCI info collection from the device to the adapter where it belongs. BUG=dawn:29 Change-Id: Ifa7d167249c97f1934f7c10d420f864f59babd37 Reviewed-on: https://dawn-review.googlesource.com/c/3843 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Corentin Wallez <cwallez@chromium.org>
87 lines
3.3 KiB
C++
87 lines
3.3 KiB
C++
// Copyright 2019 The Dawn Authors
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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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#include "dawn_native/opengl/BackendGL.h"
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#include "dawn_native/OpenGLBackend.h"
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#include "dawn_native/opengl/DeviceGL.h"
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namespace dawn_native { namespace opengl {
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// The OpenGL backend's Adapter.
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class Adapter : public AdapterBase {
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public:
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Adapter(InstanceBase* instance, const AdapterDiscoveryOptions* options)
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: AdapterBase(instance, BackendType::OpenGL) {
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// Use getProc to populate GLAD.
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gladLoadGLLoader(reinterpret_cast<GLADloadproc>(options->getProc));
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// Set state that never changes between devices.
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_SCISSOR_TEST);
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glEnable(GL_PRIMITIVE_RESTART_FIXED_INDEX);
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mPCIInfo.name = reinterpret_cast<const char*>(glGetString(GL_RENDERER));
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}
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virtual ~Adapter() = default;
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private:
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ResultOrError<DeviceBase*> CreateDeviceImpl() override {
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// There is no limit on the number of devices created from this adapter because they can
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// all share the same backing OpenGL context.
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return {new Device(this)};
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}
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};
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// Implementation of the OpenGL backend's BackendConnection
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Backend::Backend(InstanceBase* instance) : BackendConnection(instance, BackendType::OpenGL) {
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}
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std::vector<std::unique_ptr<AdapterBase>> Backend::DiscoverDefaultAdapters() {
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// The OpenGL backend needs at least "getProcAddress" to discover an adapter.
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return {};
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}
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ResultOrError<std::vector<std::unique_ptr<AdapterBase>>> Backend::DiscoverAdapters(
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const AdapterDiscoveryOptionsBase* optionsBase) {
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// TODO(cwallez@chromium.org): For now we can only create a single adapter because glad uses
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// static variables to store the pointers to OpenGL procs. Also, if we could create
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// multiple adapters, we would need to figure out what to do about MakeCurrent.
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if (mCreatedAdapter) {
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return DAWN_VALIDATION_ERROR("The OpenGL backend can only create a single adapter");
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}
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ASSERT(optionsBase->backendType == BackendType::OpenGL);
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const AdapterDiscoveryOptions* options =
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reinterpret_cast<const AdapterDiscoveryOptions*>(optionsBase);
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if (options->getProc == nullptr) {
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return DAWN_VALIDATION_ERROR("AdapterDiscoveryOptions::getProc must be set");
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}
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std::vector<std::unique_ptr<AdapterBase>> adapters;
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adapters.push_back(std::make_unique<Adapter>(GetInstance(), options));
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mCreatedAdapter = true;
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return std::move(adapters);
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}
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BackendConnection* Connect(InstanceBase* instance) {
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return new Backend(instance);
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}
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}} // namespace dawn_native::opengl
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