Added new RHI abstraction layer;

Added new console debug page to UnitTest;

Ghost.Graphics/RHI/IResource.cs

@@ -0,0 +1,136 @@
+namespace Ghost.Graphics.RHI;
+
+/// <summary>
+/// Base interface for all graphics resources
+/// </summary>
+public interface IResource : IDisposable
+{
+    /// <summary>
+    /// Current resource state
+    /// </summary>
+    ResourceState CurrentState { get; }
+
+    /// <summary>
+    /// Resource name for debugging
+    /// </summary>
+    string Name { get; set; }
+
+    /// <summary>
+    /// Size of the resource in bytes
+    /// </summary>
+    ulong Size { get; }
+}
+
+/// <summary>
+/// Texture resource interface
+/// </summary>
+public interface ITexture : IResource
+{
+    /// <summary>
+    /// Width of the texture in pixels
+    /// </summary>
+    uint Width { get; }
+
+    /// <summary>
+    /// Height of the texture in pixels
+    /// </summary>
+    uint Height { get; }
+
+    /// <summary>
+    /// Texture format
+    /// </summary>
+    TextureFormat Format { get; }
+
+    /// <summary>
+    /// Number of mip levels
+    /// </summary>
+    uint MipLevels { get; }
+}
+
+/// <summary>
+/// Buffer resource interface
+/// </summary>
+public interface IBuffer : IResource
+{
+    /// <summary>
+    /// Buffer usage type
+    /// </summary>
+    BufferUsage Usage { get; }
+
+    /// <summary>
+    /// Maps the buffer for CPU access
+    /// </summary>
+    /// <returns>Pointer to mapped memory</returns>
+    unsafe void* Map();
+
+    /// <summary>
+    /// Unmaps the buffer from CPU access
+    /// </summary>
+    void Unmap();
+}
+
+/// <summary>
+/// Render target interface for rendering operations
+/// Supports either color OR depth rendering, not both
+/// </summary>
+public interface IRenderTarget : IDisposable
+{
+    /// <summary>
+    /// Width of the render target
+    /// </summary>
+    uint Width { get; }
+
+    /// <summary>
+    /// Height of the render target
+    /// </summary>
+    uint Height { get; }
+
+    /// <summary>
+    /// Type of render target (color or depth)
+    /// </summary>
+    RenderTargetType Type { get; }
+
+    /// <summary>
+    /// Gets the target texture (either color or depth based on Type)
+    /// </summary>
+    ITexture Target { get; }
+}
+
+/// <summary>
+/// Type of render target
+/// </summary>
+public enum RenderTargetType
+{
+    Color,
+    Depth
+}
+
+/// <summary>
+/// Texture format enumeration
+/// </summary>
+public enum TextureFormat
+{
+    Unknown,
+    R8G8B8A8_UNorm,
+    B8G8R8A8_UNorm,
+    R16G16B16A16_Float,
+    R32G32B32A32_Float,
+    D24_UNorm_S8_UInt,
+    D32_Float
+}
+
+/// <summary>
+/// Buffer usage flags
+/// </summary>
+[Flags]
+public enum BufferUsage
+{
+    None = 0,
+    Vertex = 1 << 0,
+    Index = 1 << 1,
+    Constant = 1 << 2,
+    Structured = 1 << 3,
+    Raw = 1 << 4,
+    Upload = 1 << 5,
+    Readback = 1 << 6
+}