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https://github.com/encounter/dawn-cmake.git
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4099f65525
Bug: dawn:442 Change-Id: Ic4c29eed51984d367dc7fd6055e33d26bfc7faed Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/28041 Commit-Queue: Austin Eng <enga@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org>
72 lines
3.2 KiB
C++
72 lines
3.2 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_CONSTANTS_H_
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#define COMMON_CONSTANTS_H_
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#include <cstdint>
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static constexpr uint32_t kMaxBindGroups = 4u;
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static constexpr uint8_t kMaxVertexAttributes = 16u;
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// Vulkan has a standalone limit named maxVertexInputAttributeOffset (2047u at least) for vertex
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// attribute offset. The limit might be meaningless because Vulkan has another limit named
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// maxVertexInputBindingStride (2048u at least). We use maxVertexAttributeEnd (2048u) here to
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// verify vertex attribute offset, which equals to maxOffset + smallest size of vertex format
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// (char). We may use maxVertexInputBindingStride (maxVertexBufferStride below) instead to replace
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// maxVertexAttributeEnd in future.
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static constexpr uint32_t kMaxVertexAttributeEnd = 2048u;
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static constexpr uint8_t kMaxVertexBuffers = 16u;
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static constexpr uint32_t kMaxVertexBufferStride = 2048u;
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static constexpr uint32_t kNumStages = 3;
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static constexpr uint8_t kMaxColorAttachments = 4u;
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static constexpr uint32_t kTextureBytesPerRowAlignment = 256u;
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// Dynamic buffer offsets require offset to be divisible by 256
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static constexpr uint64_t kMinDynamicBufferOffsetAlignment = 256u;
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// Per stage limits
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static constexpr uint32_t kMaxSampledTexturesPerShaderStage = 16;
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static constexpr uint32_t kMaxSamplersPerShaderStage = 16;
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static constexpr uint32_t kMaxStorageBuffersPerShaderStage = 6;
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static constexpr uint32_t kMaxStorageTexturesPerShaderStage = 4;
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static constexpr uint32_t kMaxUniformBuffersPerShaderStage = 12;
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// Per pipeline layout limits
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static constexpr uint32_t kMaxDynamicUniformBuffersPerPipelineLayout = 8u;
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static constexpr uint32_t kMaxDynamicStorageBuffersPerPipelineLayout = 4u;
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// Max size of uniform buffer binding
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static constexpr uint64_t kMaxUniformBufferBindingSize = 16384u;
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// Indirect command sizes
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static constexpr uint64_t kDispatchIndirectSize = 3 * sizeof(uint32_t);
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static constexpr uint64_t kDrawIndirectSize = 4 * sizeof(uint32_t);
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static constexpr uint64_t kDrawIndexedIndirectSize = 5 * sizeof(uint32_t);
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// Non spec defined constants.
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static constexpr float kLodMin = 0.0;
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static constexpr float kLodMax = 1000.0;
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// Max texture size constants
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static constexpr uint32_t kMaxTextureSize = 8192u;
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static constexpr uint32_t kMaxTexture2DArrayLayers = 256u;
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static constexpr uint32_t kMaxTexture2DMipLevels = 14u;
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static_assert(1 << (kMaxTexture2DMipLevels - 1) == kMaxTextureSize,
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"kMaxTexture2DMipLevels and kMaxTextureSize size mismatch");
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// Offset alignment for CopyB2B. Strictly speaking this alignment is required only
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// on macOS, but we decide to do it on all platforms.
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static constexpr uint64_t kCopyBufferToBufferOffsetAlignment = 4u;
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#endif // COMMON_CONSTANTS_H_
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