1 /* 2 * Copyright © 2022 Collabora, LTD 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 #ifndef VK_LIMITS_H 25 #define VK_LIMITS_H 26 27 /* Maximun number of shader stages in a single graphics pipeline */ 28 #define MESA_VK_MAX_GRAPHICS_PIPELINE_STAGES 5 29 30 #define MESA_VK_MAX_DESCRIPTOR_SETS 32 31 32 /* From the Vulkan 1.3.274 spec: 33 * 34 * VUID-VkPipelineLayoutCreateInfo-pPushConstantRanges-00292 35 * 36 * "Any two elements of pPushConstantRanges must not include the same 37 * stage in stageFlags" 38 * 39 * and 40 * 41 * VUID-VkPushConstantRange-stageFlags-requiredbitmask 42 * 43 * "stageFlags must not be 0" 44 * 45 * This means that the number of push constant ranges is effectively bounded 46 * by the number of possible shader stages. Not the number of stages that can 47 * be compiled together (a pipeline layout can be used in multiple pipelnes 48 * wth different sets of shaders) but the total number of stage bits supported 49 * by the implementation. Currently, those are 50 * 51 * - VK_SHADER_STAGE_VERTEX_BIT 52 * - VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT 53 * - VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT 54 * - VK_SHADER_STAGE_GEOMETRY_BIT 55 * - VK_SHADER_STAGE_FRAGMENT_BIT 56 * - VK_SHADER_STAGE_COMPUTE_BIT 57 * - VK_SHADER_STAGE_RAYGEN_BIT_KHR 58 * - VK_SHADER_STAGE_ANY_HIT_BIT_KHR 59 * - VK_SHADER_STAGE_CLOSEST_HIT_BIT_KHR 60 * - VK_SHADER_STAGE_MISS_BIT_KHR 61 * - VK_SHADER_STAGE_INTERSECTION_BIT_KHR 62 * - VK_SHADER_STAGE_CALLABLE_BIT_KHR 63 * - VK_SHADER_STAGE_TASK_BIT_EXT 64 * - VK_SHADER_STAGE_MESH_BIT_EXT 65 */ 66 #define MESA_VK_MAX_PUSH_CONSTANT_RANGES 14 67 68 #define MESA_VK_MAX_VERTEX_BINDINGS 32 69 #define MESA_VK_MAX_VERTEX_ATTRIBUTES 32 70 71 /* As of June 29, 2022, according to vulkan.gpuinfo.org, 99% of all reports 72 * listed a max vertex stride that fits in 16 bits. 73 */ 74 #define MESA_VK_MAX_VERTEX_BINDING_STRIDE UINT16_MAX 75 76 #define MESA_VK_MAX_VIEWPORTS 16 77 #define MESA_VK_MAX_SCISSORS 16 78 #define MESA_VK_MAX_DISCARD_RECTANGLES 4 79 80 /* As of June 29, 2022, according to vulkan.gpuinfo.org, no reports list more 81 * than 16 samples for framebufferColorSampleCounts except one layer running 82 * on top of WARP on Windows. 83 */ 84 #define MESA_VK_MAX_SAMPLES 16 85 86 /* As of June 29, 2022, according to vulkan.gpuinfo.org, the only GPUs 87 * claiming support for maxSampleLocationGridSize greater than 1x1 is AMD 88 * which supports 2x2 but only up to 8 samples. 89 */ 90 #define MESA_VK_MAX_SAMPLE_LOCATIONS 32 91 92 #define MESA_VK_MAX_COLOR_ATTACHMENTS 8 93 94 /* Since VkSubpassDescription2::viewMask is a 32-bit integer, there are a 95 * maximum of 32 possible views. 96 */ 97 #define MESA_VK_MAX_MULTIVIEW_VIEW_COUNT 32 98 99 #endif /* VK_LIMITS_H */ 100