chromium/third_party/blink/renderer/modules/xr/xr_cube_map.cc

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "third_party/blink/renderer/modules/xr/xr_cube_map.h"

#include <algorithm>
#include <bit>
#include <cstring>

#include "device/vr/public/mojom/vr_service.mojom-blink.h"
#include "third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.h"
#include "third_party/blink/renderer/modules/webgl/webgl_texture.h"
#include "third_party/blink/renderer/platform/bindings/exception_code.h"
#include "third_party/blink/renderer/platform/graphics/gpu/drawing_buffer.h"

namespace {

// This is an inversion of FloatToHalfFloat in ui/gfx/half_float.cc
float HalfFloatToFloat(const uint16_t input) { … }

// Linear to sRGB converstion as given in
// https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_framebuffer_sRGB.txt
uint8_t LinearToSrgb(float cl) { … }

void Rgba16fToSrgba8(const uint16_t* input,
                     uint8_t* output,
                     WTF::wtf_size_t num) { … }

}  // namespace

namespace blink {

XRCubeMap::XRCubeMap(const device::mojom::blink::XRCubeMap& cube_map) { … }

WebGLTexture* XRCubeMap::updateWebGLEnvironmentCube(
    WebGLRenderingContextBase* context,
    WebGLTexture* texture,
    GLenum internal_format,
    GLenum format,
    GLenum type) const { … }

}  // namespace blink