src/dawn/wire/server/ServerSurface.cpp

// Copyright 2024 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "dawn/wire/server/ObjectStorage.h"
#include "dawn/wire/server/Server.h"

namespace dawn::wire::server {

WireResult Server::DoSurfaceGetCurrentTexture(Known<WGPUSurface> surface,
                                              Known<WGPUDevice> configuredDevice,
                                              ObjectHandle textureHandle) {
    Reserved<WGPUTexture> texture;
    WIRE_TRY(Allocate(&texture, textureHandle, AllocationState::Reserved));

    WGPUSurfaceTexture surfaceTexture;
    mProcs.surfaceGetCurrentTexture(surface->handle, &surfaceTexture);

    if (surfaceTexture.texture != nullptr) {
        return FillReservation(texture.id, surfaceTexture.texture);
    } else {
        // The client always assumes that a texture will be associated with the reservation, so
        // create an error texture on the configured device.
        WGPUTextureDescriptor desc = WGPU_TEXTURE_DESCRIPTOR_INIT;
        WGPUTexture errorTexture = mProcs.deviceCreateErrorTexture(configuredDevice->handle, &desc);
        return FillReservation(texture.id, errorTexture);
    }
}

}  // namespace dawn::wire::server