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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/xr/xr_webgl_sub_image.h"
#include "third_party/blink/renderer/modules/webgl/webgl_unowned_texture.h"
namespace blink {
XRWebGLSubImage::XRWebGLSubImage(const gfx::Rect& viewport,
std::optional<uint16_t> image_index,
XRWebGLSwapChain* color_swap_chain,
XRWebGLSwapChain* depth_stencil_swap_chain,
XRWebGLSwapChain* motion_vector_swap_chain)
: XRSubImage(viewport), image_index_(image_index) {
// Must have color swap chain, depth/stencil and motion vector are optional.
CHECK(color_swap_chain);
color_texture_ = color_swap_chain->GetCurrentTexture();
color_texture_width_ = color_swap_chain->descriptor().width;
color_texture_height_ = color_swap_chain->descriptor().height;
if (depth_stencil_swap_chain) {
depth_stencil_texture_ = depth_stencil_swap_chain->GetCurrentTexture();
depth_stencil_texture_width_ = depth_stencil_swap_chain->descriptor().width;
depth_stencil_texture_height_ =
depth_stencil_swap_chain->descriptor().height;
}
if (motion_vector_swap_chain) {
motion_vector_texture_ = motion_vector_swap_chain->GetCurrentTexture();
motion_vector_texture_width_ = motion_vector_swap_chain->descriptor().width;
motion_vector_texture_height_ =
motion_vector_swap_chain->descriptor().height;
}
}
void XRWebGLSubImage::Trace(Visitor* visitor) const {
visitor->Trace(color_texture_);
visitor->Trace(depth_stencil_texture_);
visitor->Trace(motion_vector_texture_);
XRSubImage::Trace(visitor);
}
} // namespace blink
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