From b071cdb843463c1f50b6484c7d50b31ba455a61d Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Tue, 31 Jan 2023 16:01:56 +0100
Subject: [PATCH] Expose various engine features to scripting

---
 Source/Engine/Core/Math/Viewport.cs   | 21 +++++----------------
 Source/Engine/Graphics/Enums.h        |  2 +-
 Source/Engine/Graphics/GPUDevice.h    |  2 +-
 Source/Engine/Graphics/RenderView.cpp |  8 ++++++++
 Source/Engine/Graphics/RenderView.h   |  8 +-------
 Source/Engine/Renderer/Renderer.h     |  3 +--
 6 files changed, 17 insertions(+), 27 deletions(-)

diff --git a/Source/Engine/Core/Math/Viewport.cs b/Source/Engine/Core/Math/Viewport.cs
index cf100dc9c..b375e416c 100644
--- a/Source/Engine/Core/Math/Viewport.cs
+++ b/Source/Engine/Core/Math/Viewport.cs
@@ -161,6 +161,11 @@ namespace FlaxEngine
             }
         }
 
+        /// <summary>
+        /// Gets the aspect ratio used by the viewport.
+        /// </summary>
+        public float AspectRatio => !Mathf.IsZero(Height) ? Width / Height : 0f;
+
         /// <summary>
         /// Determines whether the specified <see cref="Viewport"/> is equal to this instance.
         /// </summary>
@@ -326,21 +331,5 @@ namespace FlaxEngine
                 vector /= w;
             }
         }
-
-        /// <summary>
-        /// Gets the aspect ratio used by the viewport.
-        /// </summary>
-        /// <value>The aspect ratio.</value>
-        public float AspectRatio
-        {
-            get
-            {
-                if (!Mathf.IsZero(Height))
-                {
-                    return Width / Height;
-                }
-                return 0f;
-            }
-        }
     }
 }
diff --git a/Source/Engine/Graphics/Enums.h b/Source/Engine/Graphics/Enums.h
index 55657f507..74c859352 100644
--- a/Source/Engine/Graphics/Enums.h
+++ b/Source/Engine/Graphics/Enums.h
@@ -514,7 +514,7 @@ public:
     API_FIELD(ReadOnly) static BlendingMode Additive;
 
     /// <summary>
-    /// Gets the alpha blending.
+    /// Gets the alpha blending. Source alpha controls the output color (0 - use destination color, 1 - use source color).
     /// </summary>
     API_FIELD(ReadOnly) static BlendingMode AlphaBlend;
 
diff --git a/Source/Engine/Graphics/GPUDevice.h b/Source/Engine/Graphics/GPUDevice.h
index 37fc8cb87..4dbcf6d06 100644
--- a/Source/Engine/Graphics/GPUDevice.h
+++ b/Source/Engine/Graphics/GPUDevice.h
@@ -134,7 +134,7 @@ public:
     /// <summary>
     /// Quad rendering shader
     /// </summary>
-    GPUShader* QuadShader;
+    API_FIELD(ReadOnly) GPUShader* QuadShader;
 
     /// <summary>
     /// The current task being executed.
diff --git a/Source/Engine/Graphics/RenderView.cpp b/Source/Engine/Graphics/RenderView.cpp
index 736609e0c..baa5d5058 100644
--- a/Source/Engine/Graphics/RenderView.cpp
+++ b/Source/Engine/Graphics/RenderView.cpp
@@ -84,6 +84,14 @@ void RenderView::PrepareCache(const RenderContext& renderContext, float width, f
     MainScreenSize = mainView->ScreenSize;
 }
 
+void RenderView::SetUp(const Matrix& viewProjection)
+{
+    // Copy data
+    Matrix::Invert(viewProjection, IVP);
+    Frustum.SetMatrix(viewProjection);
+    CullingFrustum = Frustum;
+}
+
 void RenderView::SetUp(const Matrix& view, const Matrix& projection)
 {
     // Copy data
diff --git a/Source/Engine/Graphics/RenderView.h b/Source/Engine/Graphics/RenderView.h
index d64e05d4b..52e317a51 100644
--- a/Source/Engine/Graphics/RenderView.h
+++ b/Source/Engine/Graphics/RenderView.h
@@ -255,13 +255,7 @@ public:
 public:
     // Set up view with custom params
     // @param viewProjection View * Projection matrix
-    void SetUp(const Matrix& viewProjection)
-    {
-        // Copy data
-        Matrix::Invert(viewProjection, IVP);
-        Frustum.SetMatrix(viewProjection);
-        CullingFrustum = Frustum;
-    }
+    void SetUp(const Matrix& viewProjection);
 
     // Set up view with custom params
     // @param view View matrix
diff --git a/Source/Engine/Renderer/Renderer.h b/Source/Engine/Renderer/Renderer.h
index 794a6dcc4..885b8ca43 100644
--- a/Source/Engine/Renderer/Renderer.h
+++ b/Source/Engine/Renderer/Renderer.h
@@ -29,9 +29,8 @@ public:
     /// Performs rendering for the input task.
     /// </summary>
     /// <param name="task">The scene rendering task.</param>
-    static void Render(SceneRenderTask* task);
+    API_FUNCTION() static void Render(SceneRenderTask* task);
 
-public:
     /// <summary>
     /// Draws scene objects depth (to the output Z buffer). The output must be depth texture to write hardware depth to it.
     /// </summary>