new structure

interfaces/Crafter.Graphics-MeshShader.cppm

@@ -0,0 +1,95 @@
+/*
+Crafter®.Graphics
+Copyright (C) 2025 Catcrafts®
+Catcrafts.net
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 3.0 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+*/
+
+module;
+
+#include <vulkan/vulkan.h>
+
+export module Crafter.Graphics:MeshShader;
+import std;
+import :Mesh;
+import :Camera;
+import :VulkanPipeline;
+import :DescriptorSet;
+import Crafter.Math;
+
+namespace Crafter {
+    /**
+    * @brief Shader for rendering indexed meshes
+    * @tparam VertexType The vertex type to use that is internally stored, this must match the type the glsl shader expects.
+    */
+    export template <typename VertexType>
+    class MeshShader {
+    public:
+        MatrixRowMajor<float, 4, 4, 1> transform;
+        Mesh<VertexType>* mesh;
+        Camera* camera;
+        Buffer<MatrixRowMajor<float, 4, 4, 1>> mvp;
+        std::uint32_t threadCount;
+    private:
+        EventListener<void> cameraUpdate;
+    public:
+        /**
+        * @brief Constructs the MeshShader with a mesh. 
+        * The Model-View-Projection (MVP) matrix and the transform matrix are initialized to the identity matrix.
+        * 
+        * @param mesh Pointer to the mesh to use. The mesh must remain valid for the lifetime of this object.
+        */
+        MeshShader(Mesh<VertexType>* mesh) : threadCount(std::ceil(static_cast<double>(mesh->indexCount)/64/3)), mvp(VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT), mesh(mesh), camera(nullptr) {
+            transform = MatrixRowMajor<float, 4, 4, 1>::Identity();
+            *mvp.value = MatrixRowMajor<float, 4, 4, 1>::Identity();
+        }
+        /**
+        * @brief Constructs the MeshShader with a mesh. 
+        * The transform is initialized to identity, the transform is initialized to identity and the mvp to the camera's projectionView.
+        * 
+        * @param mesh Pointer to the mesh to use. The mesh must remain valid for the lifetime of this object.
+        * @param mesh Pointer to the camera to use. The camera must remain valid for the lifetime of this object.
+        */
+        MeshShader(Mesh<VertexType>* mesh, Camera* camera) : threadCount(std::ceil(static_cast<double>(mesh->indexCount)/64/3)), mvp(VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT), mesh(mesh), camera(camera), cameraUpdate(
+            &camera->onUpdate, [this](){
+                Update();
+            }
+        ) {
+            transform = MatrixRowMajor<float, 4, 4, 1>::Identity();
+            *mvp.value = camera->projectionView;
+        }
+        /**
+        * @brief Writes this class's 3 descriptors to the set, this method must be called before rendering with this shader.
+        * Slot 0 mvp: VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER.
+        * Slot 1 vertex: VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER.
+        * Slot 2 index: VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER.
+        */
+        void WriteDescriptors(VkDescriptorSet set) {
+            VkWriteDescriptorSet write[3] = {
+                vks::initializers::writeDescriptorSet(set, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &mvp.descriptor),
+                vks::initializers::writeDescriptorSet(set, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1, &mesh->verticies.descriptor),
+                vks::initializers::writeDescriptorSet(set, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 2, &mesh->indicies.descriptor)
+            };
+            vkUpdateDescriptorSets(VulkanDevice::device, 3, &write[0], 0, nullptr);
+        }
+        /**
+        * @brief Must be called after every update to the camera or this transform
+        */
+        void Update() {
+            *mvp.value = camera->projectionView*transform;
+        }
+    };
+}