mirror of
https://github.com/encounter/dawn-cmake.git
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bdc029ee39
Treat color target format with "float" capabilities as blendable format and validate when blending is enabled. Add helpers for checking float16 texture values. Bug: dawn:726 Change-Id: Icf8c0182e5e9a13523970c84b5af91f395a089af Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/57744 Commit-Queue: Shrek Shao <shrekshao@google.com> Reviewed-by: Austin Eng <enga@chromium.org>
103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
// Copyright 2017 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef COMMON_MATH_H_
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#define COMMON_MATH_H_
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#include "common/Assert.h"
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#include <cstddef>
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#include <cstdint>
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#include <cstring>
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#include <limits>
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#include <type_traits>
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// The following are not valid for 0
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uint32_t ScanForward(uint32_t bits);
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uint32_t Log2(uint32_t value);
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uint32_t Log2(uint64_t value);
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bool IsPowerOfTwo(uint64_t n);
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uint64_t RoundUp(uint64_t n, uint64_t m);
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constexpr uint32_t ConstexprLog2(uint64_t v) {
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return v <= 1 ? 0 : 1 + ConstexprLog2(v / 2);
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}
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constexpr uint32_t ConstexprLog2Ceil(uint64_t v) {
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return v <= 1 ? 0 : ConstexprLog2(v - 1) + 1;
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}
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inline uint32_t Log2Ceil(uint32_t v) {
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return v <= 1 ? 0 : Log2(v - 1) + 1;
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}
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inline uint32_t Log2Ceil(uint64_t v) {
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return v <= 1 ? 0 : Log2(v - 1) + 1;
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}
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uint64_t NextPowerOfTwo(uint64_t n);
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bool IsPtrAligned(const void* ptr, size_t alignment);
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void* AlignVoidPtr(void* ptr, size_t alignment);
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bool IsAligned(uint32_t value, size_t alignment);
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template <typename T>
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T Align(T value, size_t alignment) {
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ASSERT(value <= std::numeric_limits<T>::max() - (alignment - 1));
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ASSERT(IsPowerOfTwo(alignment));
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ASSERT(alignment != 0);
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T alignmentT = static_cast<T>(alignment);
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return (value + (alignmentT - 1)) & ~(alignmentT - 1);
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}
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template <typename T>
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DAWN_FORCE_INLINE T* AlignPtr(T* ptr, size_t alignment) {
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ASSERT(IsPowerOfTwo(alignment));
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ASSERT(alignment != 0);
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return reinterpret_cast<T*>((reinterpret_cast<size_t>(ptr) + (alignment - 1)) &
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~(alignment - 1));
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}
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template <typename T>
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DAWN_FORCE_INLINE const T* AlignPtr(const T* ptr, size_t alignment) {
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ASSERT(IsPowerOfTwo(alignment));
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ASSERT(alignment != 0);
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return reinterpret_cast<const T*>((reinterpret_cast<size_t>(ptr) + (alignment - 1)) &
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~(alignment - 1));
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}
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template <typename destType, typename sourceType>
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destType BitCast(const sourceType& source) {
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static_assert(sizeof(destType) == sizeof(sourceType), "BitCast: cannot lose precision.");
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destType output;
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std::memcpy(&output, &source, sizeof(destType));
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return output;
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}
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uint16_t Float32ToFloat16(float fp32);
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float Float16ToFloat32(uint16_t fp16);
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bool IsFloat16NaN(uint16_t fp16);
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float SRGBToLinear(float srgb);
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template <typename T1,
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typename T2,
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typename Enable = typename std::enable_if<sizeof(T1) == sizeof(T2)>::type>
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constexpr bool IsSubset(T1 subset, T2 set) {
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T2 bitsAlsoInSet = subset & set;
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return bitsAlsoInSet == subset;
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}
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#endif // COMMON_MATH_H_
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