| /* Copyright (c) 2017 Hans-Kristian Arntzen |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| // Based on the following files from the Granite rendering engine: |
| // - vulkan/descriptor_set.hpp |
| |
| #ifndef LIB_ESCHER_THIRD_PARTY_GRANITE_VK_DESCRIPTOR_SET_LAYOUT_H_ |
| #define LIB_ESCHER_THIRD_PARTY_GRANITE_VK_DESCRIPTOR_SET_LAYOUT_H_ |
| |
| #include <vulkan/vulkan.hpp> |
| |
| #include "lib/escher/util/debug_print.h" |
| |
| namespace escher { |
| namespace impl { |
| |
| // The fields are bitmaps where each bit corresponds to a binding index within |
| // the set. Therefore, there can be at most 32 descriptor bindings per set. |
| // Note that a bit can only be set in one of the fields; in other words for |
| // any pair of masks, (mask1 & mask2) must equal zero. |fp_mask| is the |
| // exception; it tracks whether image formats are floating point or not. |
| // |
| // NOTE: When interpreting DescriptorSetLayouts, various code assumes that |
| // uniform buffers use dynamic offsets and storage buffers use static offsets. |
| // |
| // TODO(SCN-699): Consider allowing both static/dynamic offsets for both storage |
| // and uniform buffers. |
| struct DescriptorSetLayout { |
| uint32_t sampled_image_mask = 0; |
| uint32_t storage_image_mask = 0; |
| uint32_t uniform_buffer_mask = 0; |
| uint32_t storage_buffer_mask = 0; |
| uint32_t sampled_buffer_mask = 0; |
| uint32_t input_attachment_mask = 0; |
| uint32_t fp_mask = 0; |
| vk::ShaderStageFlags stages; |
| |
| bool operator==(const DescriptorSetLayout& other) const { |
| return sampled_image_mask == other.sampled_image_mask && |
| storage_image_mask == other.storage_image_mask && |
| uniform_buffer_mask == other.uniform_buffer_mask && |
| storage_buffer_mask == other.storage_buffer_mask && |
| sampled_buffer_mask == other.sampled_buffer_mask && |
| input_attachment_mask == other.input_attachment_mask && |
| fp_mask == other.fp_mask && stages == other.stages; |
| } |
| |
| // Return false if the layout is invalid in any way (multiple descriptors |
| // sharing the same binding index, etc). |
| bool IsValid(); |
| }; |
| |
| } // namespace impl |
| |
| ESCHER_DEBUG_PRINTABLE(impl::DescriptorSetLayout); |
| |
| } // namespace escher |
| |
| #endif // LIB_ESCHER_THIRD_PARTY_GRANITE_VK_DESCRIPTOR_SET_LAYOUT_H_ |