cleanup and refactoring

raytracer/nvpro_core/nvvkhl/hdr_env.hpp

@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2022, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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.
+ *
+ * SPDX-FileCopyrightText: Copyright (c) 2014-2022 NVIDIA CORPORATION
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+#pragma once
+//////////////////////////////////////////////////////////////////////////
+
+
+#include <array>
+#include <vector>
+
+#include "nvvk/debug_util_vk.hpp"
+#include "nvvk/images_vk.hpp"
+#include "nvvk/resourceallocator_vk.hpp"
+
+namespace nvvk {
+class Context;
+}
+
+namespace nvvkhl {
+
+/** @DOC_START
+# class nvvkhl::HdrEnv
+
+>  Load an environment image (HDR) and create an acceleration structure for important light sampling.
+  
+@DOC_END */
+class HdrEnv
+{
+public:
+  HdrEnv() = default;
+  HdrEnv(nvvk::Context* ctx, nvvk::ResourceAllocator* allocator, uint32_t queueFamilyIndex = 0U);
+  ~HdrEnv() { destroy(); }
+
+  void setup(const VkDevice& device, const VkPhysicalDevice& physicalDevice, uint32_t familyIndex, nvvk::ResourceAllocator* allocator);
+  void loadEnvironment(const std::string& hrdImage);
+  void destroy();
+
+  float getIntegral() const { return m_integral; }
+  float getAverage() const { return m_average; }
+  bool  isValid() const { return m_valid; }
+
+  inline VkDescriptorSetLayout getDescriptorSetLayout() { return m_descSetLayout; }  // HDR + importance sampling
+  inline VkDescriptorSet       getDescriptorSet() { return m_descSet; }
+  const nvvk::Texture&         getHdrTexture() { return m_texHdr; }  // The loaded HDR texture
+  VkExtent2D                   getHdrImageSize() { return m_hdrImageSize; }
+
+private:
+  VkDevice                 m_device{VK_NULL_HANDLE};
+  uint32_t                 m_familyIndex{0};
+  nvvk::ResourceAllocator* m_alloc{nullptr};
+  nvvk::DebugUtil          m_debug;
+
+  float      m_integral{1.F};
+  float      m_average{1.F};
+  bool       m_valid{false};
+  VkExtent2D m_hdrImageSize{1, 1};
+
+  // Resources
+  nvvk::Texture         m_texHdr;
+  nvvk::Buffer          m_accelImpSmpl;
+  VkDescriptorPool      m_descPool{VK_NULL_HANDLE};
+  VkDescriptorSetLayout m_descSetLayout{VK_NULL_HANDLE};
+  VkDescriptorSet       m_descSet{VK_NULL_HANDLE};
+
+
+  void createDescriptorSetLayout();
+};
+
+}  // namespace nvvkhl