Define API for rendering to a texture

src/Graphics/Renderer.hpp

@@ -15,6 +15,7 @@
 #include <Graphics/Vulkan/Swapchain.hpp>
 #include <Graphics/Vulkan/TextureRegistry.hpp>
 #include <Graphics/Vulkan/UniformRegistry.hpp>
+#include <Math/Box2.hpp>
 #include <Math/Color.hpp>
 
 namespace Dynamo::Graphics {
@@ -55,6 +56,7 @@ namespace Dynamo::Graphics {
         // TODO - Fixes:
         // * Pre-defined render pass ---- Define a default render pass to handle the no-draw case
         // * Memory defragmentation stategy
+        // * Memory pool buffer suballocation
 
         // TODO - Features:
         // * Live update texture? --- Support non-shader-optimal image layouts
@@ -193,5 +195,15 @@ namespace Dynamo::Graphics {
          *
          */
         void render();
+
+        /**
+         * @brief Render to a texture.
+         *
+         * The texture must have been created with "RenderTarget" usage on.
+         *
+         * @param texture
+         * @param extent
+         */
+        void render(Texture texture, const Box2 &extent);
     };
 } // namespace Dynamo::Graphics

src/Graphics/Texture.hpp

@@ -42,6 +42,16 @@ namespace Dynamo::Graphics {
         ClampBorder,
     };
 
+    /**
+     * @brief Texture usage, determines how the texture will be stored in GPU memory.
+     *
+     */
+    enum class TextureUsage {
+        Static,
+        Dynamic,
+        RenderTarget,
+    };
+
     /**
      * @brief Texture descriptor.
      *
@@ -71,6 +81,12 @@ namespace Dynamo::Graphics {
          */
         TextureFormat format = TextureFormat::U8_RGBA_Norm;
 
+        /**
+         * @brief Texture usage.
+         *
+         */
+        TextureUsage usage = TextureUsage::Static;
+
         /**
          * @brief Minification filter.
          *