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949f1e45f1
All the buffer backend files had basically the same implemenations of MapRequestTracker and the tracker was owned by device backends. This refactor puts MapRequestTracker into its own file and has the tracker be owned by DeviceBase and BufferBase. Bug: dawn:400 Change-Id: Id28422b575e9c04d4435d5f119e0ffe08c2d1ce8 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/21760 Commit-Queue: Natasha Lee <natlee@microsoft.com> Reviewed-by: Austin Eng <enga@chromium.org>
99 lines
3.3 KiB
C++
99 lines
3.3 KiB
C++
// Copyright 2017 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/BufferGL.h"
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#include "dawn_native/opengl/DeviceGL.h"
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namespace dawn_native { namespace opengl {
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// Buffer
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Buffer::Buffer(Device* device, const BufferDescriptor* descriptor)
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: BufferBase(device, descriptor) {
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device->gl.GenBuffers(1, &mBuffer);
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device->gl.BindBuffer(GL_ARRAY_BUFFER, mBuffer);
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device->gl.BufferData(GL_ARRAY_BUFFER, GetSize(), nullptr, GL_STATIC_DRAW);
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}
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Buffer::~Buffer() {
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DestroyInternal();
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}
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GLuint Buffer::GetHandle() const {
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return mBuffer;
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}
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bool Buffer::IsMapWritable() const {
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// TODO(enga): All buffers in GL can be mapped. Investigate if mapping them will cause the
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// driver to migrate it to shared memory.
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return true;
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}
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MaybeError Buffer::MapAtCreationImpl(uint8_t** mappedPointer) {
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const OpenGLFunctions& gl = ToBackend(GetDevice())->gl;
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gl.BindBuffer(GL_ARRAY_BUFFER, mBuffer);
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mMappedData = gl.MapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
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*mappedPointer = reinterpret_cast<uint8_t*>(mMappedData);
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return {};
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}
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MaybeError Buffer::SetSubDataImpl(uint32_t start, uint32_t count, const void* data) {
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const OpenGLFunctions& gl = ToBackend(GetDevice())->gl;
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gl.BindBuffer(GL_ARRAY_BUFFER, mBuffer);
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gl.BufferSubData(GL_ARRAY_BUFFER, start, count, data);
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return {};
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}
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MaybeError Buffer::MapReadAsyncImpl(uint32_t serial) {
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const OpenGLFunctions& gl = ToBackend(GetDevice())->gl;
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// TODO(cwallez@chromium.org): this does GPU->CPU synchronization, we could require a high
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// version of OpenGL that would let us map the buffer unsynchronized.
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gl.BindBuffer(GL_ARRAY_BUFFER, mBuffer);
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mMappedData = gl.MapBuffer(GL_ARRAY_BUFFER, GL_READ_ONLY);
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return {};
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}
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MaybeError Buffer::MapWriteAsyncImpl(uint32_t serial) {
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const OpenGLFunctions& gl = ToBackend(GetDevice())->gl;
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// TODO(cwallez@chromium.org): this does GPU->CPU synchronization, we could require a high
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// version of OpenGL that would let us map the buffer unsynchronized.
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gl.BindBuffer(GL_ARRAY_BUFFER, mBuffer);
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mMappedData = gl.MapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
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return {};
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}
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void* Buffer::GetMappedPointerImpl() {
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return mMappedData;
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}
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void Buffer::UnmapImpl() {
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const OpenGLFunctions& gl = ToBackend(GetDevice())->gl;
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gl.BindBuffer(GL_ARRAY_BUFFER, mBuffer);
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gl.UnmapBuffer(GL_ARRAY_BUFFER);
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mMappedData = nullptr;
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}
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void Buffer::DestroyImpl() {
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ToBackend(GetDevice())->gl.DeleteBuffers(1, &mBuffer);
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mBuffer = 0;
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}
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}} // namespace dawn_native::opengl
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