1 // Copyright 2018 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef VK_CONFIG_HPP_ 16 #define VK_CONFIG_HPP_ 17 18 #include "Version.hpp" 19 20 #include "Vulkan/VulkanPlatform.hpp" 21 #include "spirv-tools/libspirv.h" 22 23 namespace vk { 24 25 // Note: Constant array initialization requires a string literal. 26 // constexpr char* or char[] does not work for that purpose. 27 #define SWIFTSHADER_DEVICE_NAME "SwiftShader Device" // Max length: VK_MAX_PHYSICAL_DEVICE_NAME_SIZE 28 #define SWIFTSHADER_UUID "SwiftShaderUUID" // Max length: VK_UUID_SIZE (16) 29 30 const spv_target_env SPIRV_VERSION = SPV_ENV_VULKAN_1_2; 31 32 enum 33 { 34 API_VERSION = VK_API_VERSION_1_2, 35 DRIVER_VERSION = VK_MAKE_VERSION(MAJOR_VERSION, MINOR_VERSION, PATCH_VERSION), 36 VENDOR_ID = 0x1AE0, // Google, Inc.: https://pcisig.com/google-inc-1 37 DEVICE_ID = 0xC0DE, // SwiftShader (placeholder) 38 }; 39 40 enum 41 { 42 // Alignment of all Vulkan objects, pools, device memory, images, buffers, descriptors. 43 REQUIRED_MEMORY_ALIGNMENT = 16, // 16 bytes for 128-bit vector types. 44 45 MIN_TEXEL_BUFFER_OFFSET_ALIGNMENT = 256, 46 MIN_UNIFORM_BUFFER_OFFSET_ALIGNMENT = 256, 47 MIN_STORAGE_BUFFER_OFFSET_ALIGNMENT = 256, 48 49 MEMORY_TYPE_GENERIC_BIT = 0x1, // Generic system memory. 50 }; 51 52 enum 53 { 54 MAX_IMAGE_LEVELS_1D = 14, 55 MAX_IMAGE_LEVELS_2D = 14, 56 MAX_IMAGE_LEVELS_3D = 11, 57 MAX_IMAGE_LEVELS_CUBE = 14, 58 MAX_IMAGE_ARRAY_LAYERS = 2048, 59 MAX_SAMPLER_LOD_BIAS = 15, 60 }; 61 62 enum 63 { 64 MAX_BOUND_DESCRIPTOR_SETS = 4, 65 MAX_VERTEX_INPUT_BINDINGS = 16, 66 MAX_PUSH_CONSTANT_SIZE = 128, 67 }; 68 69 enum 70 { 71 MAX_DESCRIPTOR_SET_UNIFORM_BUFFERS_DYNAMIC = 8, 72 MAX_DESCRIPTOR_SET_STORAGE_BUFFERS_DYNAMIC = 4, 73 MAX_DESCRIPTOR_SET_COMBINED_BUFFERS_DYNAMIC = 74 MAX_DESCRIPTOR_SET_UNIFORM_BUFFERS_DYNAMIC + 75 MAX_DESCRIPTOR_SET_STORAGE_BUFFERS_DYNAMIC, 76 }; 77 78 enum 79 { 80 MAX_POINT_SIZE = 1023, 81 }; 82 83 constexpr int SUBPIXEL_PRECISION_BITS = 4; 84 constexpr float SUBPIXEL_PRECISION_FACTOR = static_cast<float>(1 << SUBPIXEL_PRECISION_BITS); 85 constexpr int SUBPIXEL_PRECISION_MASK = 0xFFFFFFFF >> (32 - SUBPIXEL_PRECISION_BITS); 86 87 } // namespace vk 88 89 #if defined(__linux__) && !defined(__ANDROID__) 90 # define SWIFTSHADER_EXTERNAL_MEMORY_OPAQUE_FD 1 91 # define SWIFTSHADER_EXTERNAL_SEMAPHORE_OPAQUE_FD 1 92 #elif defined(__ANDROID__) 93 # define SWIFTSHADER_EXTERNAL_SEMAPHORE_OPAQUE_FD 1 94 #endif 95 #if defined(__APPLE__) 96 # define SWIFTSHADER_EXTERNAL_MEMORY_OPAQUE_FD 1 97 #endif 98 99 constexpr VkDeviceSize MAX_MEMORY_ALLOCATION_SIZE = 0x40000000ull; // 0x40000000 = 1 GiB 100 101 // Memory offset calculations in 32-bit SIMD elements limit us to addressing at most 4 GiB. 102 // Signed arithmetic further restricts it to 2 GiB. 103 static_assert(MAX_MEMORY_ALLOCATION_SIZE <= 0x80000000ull, "maxMemoryAllocationSize must not exceed 2 GiB"); 104 105 #endif // VK_CONFIG_HPP_ 106