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/*
* Copyright (c) 2023 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.
*/
#include "config.h"
#include "Constraints.h"
#include "TypeStore.h"
namespace WGSL {
bool satisfies(const Type* type, Constraint constraint)
{
auto* primitive = std::get_if<Types::Primitive>(type);
if (!primitive) {
if (auto* reference = std::get_if<Types::Reference>(type))
return satisfies(reference->element, constraint);
return false;
}
switch (primitive->kind) {
case Types::Primitive::AbstractInt:
return constraint >= Constraints::AbstractInt;
case Types::Primitive::AbstractFloat:
return constraint & Constraints::Float;
case Types::Primitive::I32:
return constraint & Constraints::I32;
case Types::Primitive::U32:
return constraint & Constraints::U32;
case Types::Primitive::F32:
return constraint & Constraints::F32;
// FIXME: Add F16 support
// https://bugs.webkit.org/show_bug.cgi?id=254668
case Types::Primitive::Bool:
return constraint & Constraints::Bool;
case Types::Primitive::Void:
case Types::Primitive::Sampler:
case Types::Primitive::TextureExternal:
return false;
}
}
const Type* satisfyOrPromote(const Type* type, Constraint constraint, const TypeStore& types)
{
auto* primitive = std::get_if<Types::Primitive>(type);
if (!primitive) {
if (auto* reference = std::get_if<Types::Reference>(type))
return satisfyOrPromote(reference->element, constraint, types);
return nullptr;
}
switch (primitive->kind) {
case Types::Primitive::AbstractInt:
if (constraint < Constraints::AbstractInt)
return nullptr;
if (constraint & Constraints::AbstractInt)
return type;
if (constraint & Constraints::I32)
return types.i32Type();
if (constraint & Constraints::U32)
return types.u32Type();
if (constraint & Constraints::AbstractFloat)
return types.abstractFloatType();
if (constraint & Constraints::F32)
return types.f32Type();
if (constraint & Constraints::F16) {
// FIXME: Add F16 support
// https://bugs.webkit.org/show_bug.cgi?id=254668
RELEASE_ASSERT_NOT_REACHED();
}
RELEASE_ASSERT_NOT_REACHED();
case Types::Primitive::AbstractFloat:
if (constraint < Constraints::AbstractFloat)
return nullptr;
if (constraint & Constraints::AbstractFloat)
return type;
if (constraint & Constraints::F32)
return types.f32Type();
if (constraint & Constraints::F16) {
// FIXME: Add F16 support
// https://bugs.webkit.org/show_bug.cgi?id=254668
RELEASE_ASSERT_NOT_REACHED();
}
RELEASE_ASSERT_NOT_REACHED();
case Types::Primitive::I32:
if (!(constraint & Constraints::I32))
return nullptr;
return type;
case Types::Primitive::U32:
if (!(constraint & Constraints::U32))
return nullptr;
return type;
case Types::Primitive::F32:
if (!(constraint & Constraints::F32))
return nullptr;
return type;
// FIXME: Add F16 support
// https://bugs.webkit.org/show_bug.cgi?id=254668
case Types::Primitive::Bool:
if (!(constraint & Constraints::Bool))
return nullptr;
return type;
case Types::Primitive::Void:
case Types::Primitive::Sampler:
case Types::Primitive::TextureExternal:
return nullptr;
}
}
} // namespace WGSL
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