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/*
* Copyright (c) 2025 Apple Inc. All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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.
*/
#pragma once
#import "Texture.h"
#import "TextureView.h"
#import <WebGPU/WebGPU.h>
#import <wtf/Ref.h>
namespace WebGPU {
class TextureOrTextureView {
public:
TextureOrTextureView(Texture& texture)
: m_texture(&texture)
{
}
TextureOrTextureView(TextureView& view)
: m_view(&view)
{
}
TextureOrTextureView(Texture* texture)
: m_texture(texture)
{
}
TextureOrTextureView(TextureView* view)
: m_view(view)
{
}
#define TEXTURE_OR_VIEW_INVOKE(x) return m_view ? RefPtr { m_view }->x() : RefPtr { m_texture }->x()
#define TEXTURE_OR_VIEW_HELPER(x) auto x() const { TEXTURE_OR_VIEW_INVOKE(x); }
#define TEXTURE_OR_VIEW_HELPER_NONCONST(x) auto x() { TEXTURE_OR_VIEW_INVOKE(x); }
#define TEXTURE_OR_VIEW_HELPER_REF(x) const auto& x() const { TEXTURE_OR_VIEW_INVOKE(x); }
TEXTURE_OR_VIEW_HELPER(width)
TEXTURE_OR_VIEW_HELPER(height)
TEXTURE_OR_VIEW_HELPER(is2DTexture)
TEXTURE_OR_VIEW_HELPER(is2DArrayTexture)
TEXTURE_OR_VIEW_HELPER(is3DTexture)
TEXTURE_OR_VIEW_HELPER(sampleCount)
TEXTURE_OR_VIEW_HELPER(format)
TEXTURE_OR_VIEW_HELPER(isDestroyed)
TEXTURE_OR_VIEW_HELPER(depthOrArrayLayers)
TEXTURE_OR_VIEW_HELPER(baseArrayLayer)
TEXTURE_OR_VIEW_HELPER(baseMipLevel)
TEXTURE_OR_VIEW_HELPER(parentTexture)
TEXTURE_OR_VIEW_HELPER(parentRelativeSlice)
TEXTURE_OR_VIEW_HELPER(previouslyCleared)
TEXTURE_OR_VIEW_HELPER_NONCONST(setPreviouslyCleared)
TEXTURE_OR_VIEW_HELPER(texture)
TEXTURE_OR_VIEW_HELPER(isValid)
TEXTURE_OR_VIEW_HELPER(usage)
TEXTURE_OR_VIEW_HELPER(mipLevelCount)
TEXTURE_OR_VIEW_HELPER(arrayLayerCount)
TEXTURE_OR_VIEW_HELPER_REF(apiParentTexture)
TEXTURE_OR_VIEW_HELPER_REF(device)
void setCommandEncoder(CommandEncoder& encoder)
{
m_view ? RefPtr { m_view }->setCommandEncoder(encoder) : RefPtr { m_texture }->setCommandEncoder(encoder);
}
id<MTLRasterizationRateMap> rasterizationMapForSlice(uint32_t slice)
{
return m_view ? RefPtr { m_view }->rasterizationMapForSlice(slice) : RefPtr { m_texture }->rasterizationMapForSlice(slice);
}
#undef TEXTURE_OR_VIEW_INVOKE
#undef TEXTURE_OR_VIEW_HELPER
#undef TEXTURE_OR_VIEW_HELPER_REF
#undef TEXTURE_OR_VIEW_HELPER_NONCONST
operator bool() const { return m_texture || m_view; }
private:
RefPtr<Texture> m_texture;
RefPtr<TextureView> m_view;
};
static bool isRenderableTextureView(const auto& texture)
{
return (texture.usage() & WGPUTextureUsage_RenderAttachment) && (texture.is2DTexture() || texture.is2DArrayTexture() || texture.is3DTexture()) && texture.mipLevelCount() == 1 && texture.arrayLayerCount() <= 1;
}
}
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