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.h" 19 20 #include <Vulkan/VulkanPlatform.h> 21 22 namespace vk { 23 24 // Note: Constant array initialization requires a string literal. 25 // constexpr char* or char[] does not work for that purpose. 26 #define SWIFTSHADER_DEVICE_NAME "SwiftShader Device" // Max length: VK_MAX_PHYSICAL_DEVICE_NAME_SIZE 27 #define SWIFTSHADER_UUID "SwiftShaderUUID" // Max length: VK_UUID_SIZE (16) 28 29 enum 30 { 31 API_VERSION = VK_API_VERSION_1_1, 32 DRIVER_VERSION = VK_MAKE_VERSION(MAJOR_VERSION, MINOR_VERSION, PATCH_VERSION), 33 VENDOR_ID = 0x1AE0, // Google, Inc.: https://pcisig.com/google-inc-1 34 DEVICE_ID = 0xC0DE, // SwiftShader (placeholder) 35 }; 36 37 enum 38 { 39 // Alignment of all Vulkan objects, pools, device memory, images, buffers, descriptors. 40 REQUIRED_MEMORY_ALIGNMENT = 16, // 16 bytes for 128-bit vector types. 41 42 MIN_TEXEL_BUFFER_OFFSET_ALIGNMENT = 256, 43 MIN_UNIFORM_BUFFER_OFFSET_ALIGNMENT = 256, 44 MIN_STORAGE_BUFFER_OFFSET_ALIGNMENT = 256, 45 46 MEMORY_TYPE_GENERIC_BIT = 0x1, // Generic system memory. 47 }; 48 49 enum 50 { 51 MAX_IMAGE_LEVELS_1D = 14, 52 MAX_IMAGE_LEVELS_2D = 14, 53 MAX_IMAGE_LEVELS_3D = 11, 54 MAX_IMAGE_LEVELS_CUBE = 14, 55 MAX_IMAGE_ARRAY_LAYERS = 2048, 56 MAX_SAMPLER_LOD_BIAS = 15, 57 }; 58 59 enum 60 { 61 MAX_BOUND_DESCRIPTOR_SETS = 4, 62 MAX_VERTEX_INPUT_BINDINGS = 16, 63 MAX_PUSH_CONSTANT_SIZE = 128, 64 }; 65 66 enum 67 { 68 MAX_DESCRIPTOR_SET_UNIFORM_BUFFERS_DYNAMIC = 8, 69 MAX_DESCRIPTOR_SET_STORAGE_BUFFERS_DYNAMIC = 4, 70 MAX_DESCRIPTOR_SET_COMBINED_BUFFERS_DYNAMIC = 71 MAX_DESCRIPTOR_SET_UNIFORM_BUFFERS_DYNAMIC + 72 MAX_DESCRIPTOR_SET_STORAGE_BUFFERS_DYNAMIC, 73 }; 74 75 enum 76 { 77 MAX_POINT_SIZE = 1, // Large points are not supported. If/when we turn this on, must be >= 64. 78 }; 79 80 constexpr int SUBPIXEL_PRECISION_BITS = 4; 81 constexpr float SUBPIXEL_PRECISION_FACTOR = static_cast<float>(1 << SUBPIXEL_PRECISION_BITS); 82 constexpr int SUBPIXEL_PRECISION_MASK = 0xFFFFFFFF >> (32 - SUBPIXEL_PRECISION_BITS); 83 84 } // namespace vk 85 86 #if defined(__linux__) || defined(__ANDROID__) 87 #define SWIFTSHADER_EXTERNAL_MEMORY_OPAQUE_FD 1 88 #define SWIFTSHADER_EXTERNAL_SEMAPHORE_OPAQUE_FD 1 89 #endif 90 91 constexpr VkDeviceSize MAX_MEMORY_ALLOCATION_SIZE = 0x40000000ull; // 0x40000000 = 1 GiB 92 93 // Memory offset calculations in 32-bit SIMD elements limit us to addressing at most 4 GiB. 94 // Signed arithmetic further restricts it to 2 GiB. 95 static_assert(MAX_MEMORY_ALLOCATION_SIZE <= 0x80000000ull, "maxMemoryAllocationSize must not exceed 2 GiB"); 96 97 #endif // VK_CONFIG_HPP_ 98