| // Copyright 2017 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef COMMON_CONSTANTS_H_ |
| #define COMMON_CONSTANTS_H_ |
| |
| #include <cstdint> |
| |
| static constexpr uint32_t kMaxPushConstants = 32u; |
| static constexpr uint32_t kMaxBindGroups = 4u; |
| // TODO(cwallez@chromium.org): investigate bindgroup limits |
| static constexpr uint32_t kMaxBindingsPerGroup = 16u; |
| static constexpr uint32_t kMaxVertexAttributes = 16u; |
| // Vulkan has a standalone limit named maxVertexInputAttributeOffset (2047u at least) for vertex |
| // attribute offset. The limit might be meaningless because Vulkan has another limit named |
| // maxVertexInputBindingStride (2048u at least). We use maxVertexAttributeEnd (2048u) here to verify |
| // vertex attribute offset, which equals to maxOffset + smallest size of vertex format (char). We |
| // may use maxVertexInputStride instead in future. |
| static constexpr uint32_t kMaxVertexAttributeEnd = 2048u; |
| static constexpr uint32_t kMaxVertexInputs = 16u; |
| static constexpr uint32_t kMaxVertexInputStride = 2048u; |
| static constexpr uint32_t kNumStages = 3; |
| static constexpr uint32_t kMaxColorAttachments = 4u; |
| static constexpr uint32_t kTextureRowPitchAlignment = 256u; |
| |
| // Non spec defined constants. |
| static constexpr float kLodMin = 0.0; |
| static constexpr float kLodMax = 1000.0; |
| |
| #endif // COMMON_CONSTANTS_H_ |