documentation

src/module/Crafter.Graphics-HeightmapShader.cppm

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+/*
+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 <cstdint>
+#include <vulkan/vulkan.h>
+#include <cstring>
+#include <iostream>
+#include <cmath>
+#include "../../lib/VulkanInitializers.hpp"
+
+export module Crafter.Graphics:HeightmapShader;
+import :Camera;
+import :VulkanPipeline;
+import :DescriptorSet;
+import Crafter.Math;
+
+namespace Crafter {
+    struct HeightMapData {
+        MatrixRowMajor<float, 4, 4, 1> mvp;
+        uint32_t stride;
+        float spacing;
+        uint32_t padding[14];
+    };
+
+    export template <typename VertexType>
+    class HeightmapShader {
+    public:
+        MatrixRowMajor<float, 4, 4, 1> transform;
+        Camera* camera;
+        Buffer<HeightMapData> data;
+        Buffer<VertexType> heights;
+        std::uint32_t threadCount;
+        EventListener<void> cameraUpdate;
+        HeightmapShader(uint32_t amount, uint32_t stride, float spacing, Camera* camera) : threadCount(amount), heights(VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, amount * 4 * 64), data(VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT), camera(camera), cameraUpdate(
+            &camera->onUpdate, [this](){
+                Update();
+            }
+        ) {
+            data.value->stride = stride;
+            data.value->spacing = spacing;
+            transform = MatrixRowMajor<float, 4, 4, 1>::Identity();
+        }
+        void WriteDescriptors(VkDescriptorSet set) {
+            VkWriteDescriptorSet write[2] = {
+                vks::initializers::writeDescriptorSet(set, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &data.descriptor),
+                vks::initializers::writeDescriptorSet(set, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1, &heights.descriptor)
+            };
+            vkUpdateDescriptorSets(VulkanDevice::device, 2, &write[0], 0, nullptr);
+        }
+        void Update() {
+            data.value->mvp = camera->projectionView*transform;
+        }
+    };
+}