blob: e14307f4563fbb1422c7f75b78307e78d68ae832 [file] [log] [blame]
// Copyright 2017 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "dawn_native/opengl/BufferGL.h"
#include "dawn_native/opengl/DeviceGL.h"
namespace dawn_native { namespace opengl {
// Buffer
Buffer::Buffer(Device* device, const BufferDescriptor* descriptor)
: BufferBase(device, descriptor) {
glGenBuffers(1, &mBuffer);
glBindBuffer(GL_ARRAY_BUFFER, mBuffer);
glBufferData(GL_ARRAY_BUFFER, GetSize(), nullptr, GL_STATIC_DRAW);
}
GLuint Buffer::GetHandle() const {
return mBuffer;
}
void Buffer::SetSubDataImpl(uint32_t start, uint32_t count, const uint8_t* data) {
glBindBuffer(GL_ARRAY_BUFFER, mBuffer);
glBufferSubData(GL_ARRAY_BUFFER, start, count, data);
}
void Buffer::MapReadAsyncImpl(uint32_t serial, uint32_t start, uint32_t count) {
// TODO(cwallez@chromium.org): this does GPU->CPU synchronization, we could require a high
// version of OpenGL that would let us map the buffer unsynchronized.
glBindBuffer(GL_ARRAY_BUFFER, mBuffer);
void* data = glMapBufferRange(GL_ARRAY_BUFFER, start, count, GL_MAP_READ_BIT);
CallMapReadCallback(serial, DAWN_BUFFER_MAP_ASYNC_STATUS_SUCCESS, data);
}
void Buffer::MapWriteAsyncImpl(uint32_t serial, uint32_t start, uint32_t count) {
// TODO(cwallez@chromium.org): this does GPU->CPU synchronization, we could require a high
// version of OpenGL that would let us map the buffer unsynchronized.
glBindBuffer(GL_ARRAY_BUFFER, mBuffer);
void* data = glMapBufferRange(GL_ARRAY_BUFFER, start, count, GL_MAP_WRITE_BIT);
CallMapWriteCallback(serial, DAWN_BUFFER_MAP_ASYNC_STATUS_SUCCESS, data);
}
void Buffer::UnmapImpl() {
glBindBuffer(GL_ARRAY_BUFFER, mBuffer);
glUnmapBuffer(GL_ARRAY_BUFFER);
}
}} // namespace dawn_native::opengl