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Add a new sample - subgroups operation
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| <!-- | ||
| - Copyright (c) 2023, Mobica Limited | ||
| - | ||
| - SPDX-License-Identifier: Apache-2.0 | ||
| - | ||
| - 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. | ||
| - | ||
| --> | ||
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| # Subgroups Operations | ||
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| ## Overview | ||
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| This sample demonstrates how to use and enable the Subgroups operations feature. | ||
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| ## GLSL Shaders | ||
| In shader enable `GL_KHR_shader_subgroup_basic` extension. | ||
| TODO: add more description | ||
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| ## Enabling the Feature | ||
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| To enable the subgroups feature in the Vulkan API you must create a Vulkan instance with a minimum version of version 1.1. Enable the extension `VK_EXT_subgroup_size_control` and get the subgroup properties of a physical device | ||
| ```C++ | ||
| VkPhysicalDeviceSubgroupProperties subgroups_properties; | ||
| subgroups_properties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_PROPERTIES; | ||
| subgroups_properties.pNext = VK_NULL_HANDLE; | ||
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| VkPhysicalDeviceProperties2 device_properties2 = {}; | ||
| device_properties2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2; | ||
| device_properties2.pNext = &subgroups_properties; | ||
| vkGetPhysicalDeviceProperties2(gpu.get_handle(), &device_properties2); | ||
| ``` | ||
| TODO: add more description | ||
| ## Additional information | ||
| More about subgroups you can read [in this article](https://www.khronos.org/blog/vulkan-subgroup-tutorial). | ||
| Documentation: https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VkPhysicalDeviceSubgroupProperties.html |
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| #version 450 | ||
| /* Copyright (c) 2023, Mobica Limited | ||
| * | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * 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. | ||
| */ | ||
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| layout (binding = 1) uniform sampler2D samplerColor; | ||
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| layout (location = 0) in vec2 inUV; | ||
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| layout (location = 0) out vec4 outFragColor; | ||
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| void main() | ||
| { | ||
| outFragColor = texture(samplerColor, inUV); | ||
| } |
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| #version 450 | ||
| /* Copyright (c) 2023, Mobica Limited | ||
| * | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * 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. | ||
| */ | ||
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| layout (location = 0) in vec3 inPos; | ||
| layout (location = 1) in vec2 inUV; | ||
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| layout(location = 0) out vec2 outUv; | ||
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| layout (binding = 0) uniform Ubo | ||
| { | ||
| mat4 projection; | ||
| mat4 model; | ||
| vec4 view; | ||
| } ubo; | ||
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| void main() | ||
| { | ||
| outUv = inUV; | ||
| gl_Position = ubo.projection * ubo.model * vec4(inPos.xyz, 1.0f); | ||
| } |
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