Refactor GUI/Window utils out of gfx library (#1649)

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 77 insertions, 0 deletions

diff --git a/tools/graphics-app-framework/model.h b/tools/graphics-app-framework/model.h
new file mode 100644
index 000000000..e86940244
--- /dev/null
+++ b/tools/graphics-app-framework/model.h
@@ -0,0 +1,77 @@
+// model.h
+#pragma once
+
+#include "tools/gfx/render.h"
+#include "vector-math.h"
+
+#include <vector>
+#include <string>
+
+namespace gfx {
+
+struct ModelLoader
+{
+    struct MaterialData
+    {
+        glm::vec3                   diffuseColor;
+        glm::vec3                   specularColor;
+        float                       specularity;
+
+        RefPtr<TextureResource>     diffuseMap;
+    };
+
+    struct Vertex
+    {
+        glm::vec3 position;
+        glm::vec3 normal;
+        glm::vec2 uv;
+    };
+
+    typedef uint32_t Index;
+
+    struct MeshData
+    {
+        int firstIndex;
+        int indexCount;
+
+        void*   material;
+    };
+
+    struct ModelData
+    {
+        RefPtr<BufferResource>  vertexBuffer;
+        RefPtr<BufferResource>  indexBuffer;
+        PrimitiveTopology       primitiveTopology;
+        int                     vertexCount;
+        int                     indexCount;
+        int                     meshCount;
+        void* const*            meshes;
+    };
+
+    struct ICallbacks
+    {
+        typedef ModelLoader::MaterialData MaterialData;
+        typedef ModelLoader::MeshData MeshData;
+        typedef ModelLoader::ModelData ModelData;
+
+        virtual void* createMaterial(MaterialData const& data) = 0;
+        virtual void* createMesh(MeshData const& data) = 0;
+        virtual void* createModel(ModelData const& data) = 0;
+    };
+
+    typedef uint32_t LoadFlags;
+    enum LoadFlag : LoadFlags
+    {
+        FlipWinding = 1 << 0,
+    };
+
+    ICallbacks*         callbacks = nullptr;
+    RefPtr<Renderer>    renderer;
+    LoadFlags           loadFlags = 0;
+    float               scale = 1.0f;
+
+    Result load(char const* inputPath, void** outModel);
+};
+
+
+} // gfx