From b1fc48d0cdabdb10f264c2a763d3303e50925b35 Mon Sep 17 00:00:00 2001
From: hyzboy <hyzboy@gmail.com>
Date: Fri, 11 Feb 2022 18:07:47 +0800
Subject: [PATCH] added EquirectangularMap example.

---
 example/Vulkan/CMakeLists.txt         |   1 +
 example/Vulkan/EquirectangularMap.cpp | 188 ++++++++++++++++++++++++++
 res                                   |   2 +-
 3 files changed, 190 insertions(+), 1 deletion(-)
 create mode 100644 example/Vulkan/EquirectangularMap.cpp

diff --git a/example/Vulkan/CMakeLists.txt b/example/Vulkan/CMakeLists.txt
index ea83fbf9..26b8accb 100644
--- a/example/Vulkan/CMakeLists.txt
+++ b/example/Vulkan/CMakeLists.txt
@@ -51,4 +51,5 @@ CreateProject(16.DeferredRenderMultiCmdBuffer DeferredRenderMultiCmdBuffer.cpp)
 #CreateProject(14.AutoMaterial auto_material.cpp)
 
 CreateProject(17.Cubemap Cubemap.cpp)
+CreateProject(17.EquirectangularMap EquirectangularMap.cpp)
 CreateProject(18.RayPicking RayPicking.cpp)
\ No newline at end of file
diff --git a/example/Vulkan/EquirectangularMap.cpp b/example/Vulkan/EquirectangularMap.cpp
new file mode 100644
index 00000000..4cf47f90
--- /dev/null
+++ b/example/Vulkan/EquirectangularMap.cpp
@@ -0,0 +1,188 @@
+// Equirectangular ( or spherical)
+// 等距矩形（或球形）贴图反射测试
+
+#include"VulkanAppFramework.h"
+#include<hgl/filesystem/FileSystem.h>
+#include<hgl/graph/InlineGeometry.h>
+#include<hgl/graph/VKRenderResource.h>
+#include<hgl/graph/VKRenderableInstance.h>
+#include<hgl/graph/VKTexture.h>
+#include<hgl/graph/RenderList.h>
+
+using namespace hgl;
+using namespace hgl::graph;
+
+constexpr uint32_t SCREEN_WIDTH=1280;
+constexpr uint32_t SCREEN_HEIGHT=512;
+
+class TestApp:public CameraAppFramework
+{
+private:
+
+    SceneNode           render_root;
+    RenderList *        render_list         =nullptr;
+
+    Material *          envmap_material     =nullptr;
+    MaterialInstance *  envmap_mi           =nullptr;
+
+    Pipeline *          solid_pipeline      =nullptr;
+
+    GPUBuffer *         ubo_light           =nullptr;
+    GPUBuffer *         ubo_phong           =nullptr;
+
+    Sampler *           sampler             =nullptr;
+    Texture2D *         texture             =nullptr;
+
+    Renderable *        ro_sphere           =nullptr;
+
+    SceneNode *         sn_sphere           =nullptr;
+
+    double              last_time;
+
+private:
+
+    bool InitMaterial()
+    {
+        {
+            // photo source: https://www.hqreslib.com
+            // license: CY-BY
+
+            texture   =db->LoadTexture2D(OS_TEXT("res/equirectangular/jifu.Tex2D"),false);
+
+            if(!texture)
+                return(false);
+
+            VkSamplerCreateInfo sampler_create_info=
+            {
+                VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO,
+                nullptr,
+                0,
+                VK_FILTER_LINEAR,
+                VK_FILTER_LINEAR,
+                VK_SAMPLER_MIPMAP_MODE_LINEAR,
+                VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE,
+                VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE,
+                VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE,
+                0.0f,
+                VK_FALSE,
+                0,
+                false,
+                VK_COMPARE_OP_NEVER,
+                0.0f,
+                0,
+                VK_BORDER_COLOR_FLOAT_OPAQUE_BLACK,
+                false
+            };
+
+            sampler =db->CreateSampler(&sampler_create_info);
+        }
+
+        {
+            envmap_material=db->CreateMaterial(OS_TEXT("res/material/EnvEquirectangularMap"));
+            if(!envmap_material)return(false);
+
+            envmap_mi=db->CreateMaterialInstance(envmap_material);
+            if(!envmap_mi)return(false);
+
+            {
+                MaterialParameters *mp_texture=envmap_mi->GetMP(DescriptorSetsType::Value);
+
+                if(!mp_texture)
+                    return(false);
+
+                if(!mp_texture->BindSampler("Envmap"    ,texture,    sampler))
+                    return(false);
+
+                mp_texture->Update();
+            }
+
+            solid_pipeline=CreatePipeline(envmap_mi,InlinePipeline::Solid3D,Prim::Triangles);
+        }
+
+        return(true);
+    }
+
+    void CreateRenderObject()
+    {
+        ro_sphere=CreateRenderableSphere(db,envmap_mi->GetVAB(),64);
+    }
+
+    bool InitUBO()
+    {
+        if(!BindCameraUBO(envmap_mi))return(false);
+
+        return(true);
+    }
+
+    SceneNode *Add(Renderable *r,MaterialInstance *mi,Pipeline *pl)
+    {
+        auto ri=db->CreateRenderableInstance(r,mi,pl);
+
+        return render_root.CreateSubNode(ri);
+    }
+
+    bool InitScene()
+    {
+        sn_sphere=Add(ro_sphere,envmap_mi,solid_pipeline);
+        sn_sphere->SetLocalMatrix(scale(5,5,5));
+
+        render_root.RefreshMatrix();
+        render_list->Expend(GetCameraInfo(),&render_root);
+
+        return(true);
+    }
+
+public:
+
+    ~TestApp()
+    {
+        SAFE_CLEAR(render_list);
+    }
+
+    bool Init()
+    {
+        if(!CameraAppFramework::Init(SCREEN_WIDTH,SCREEN_HEIGHT))
+            return(false);
+
+        last_time=GetDoubleTime();
+
+        camera->pos=Vector3f(10,10,0);
+
+        camera_control->SetTarget(Vector3f(0,0,0));
+
+        render_list=new RenderList(device);
+
+        if(!InitMaterial())
+            return(false);
+
+        if(!InitUBO())
+            return(false);
+
+        CreateRenderObject();
+
+        if(!InitScene())
+            return(false);
+
+        return(true);
+    }
+
+    void BuildCommandBuffer(uint32_t index) override
+    {
+        render_root.RefreshMatrix();
+        render_list->Expend(GetCameraInfo(),&render_root);
+
+        VulkanApplicationFramework::BuildCommandBuffer(index,render_list);
+    }
+};//class TestApp:public CameraAppFramework
+
+int main(int,char **)
+{
+    TestApp app;
+
+    if(!app.Init())
+        return(-1);
+
+    while(app.Run());
+
+    return 0;
+}
diff --git a/res b/res
index 91526330..549e73eb 160000
--- a/res
+++ b/res
@@ -1 +1 @@
-Subproject commit 91526330e1b7470a36d8651444709aa8a7da7efd
+Subproject commit 549e73eb1f76190da29b2d6df7a8dd07c1df51e8