Fixed UI not rendering (partially)

src/dawn/scene/components/display/IRenderable.hpp

@@ -4,17 +4,30 @@
 // https://opensource.org/licenses/MIT
 
 #pragma once
-#include "display/shader/Shader.hpp"
+#include "dawnlibs.hpp"
 
 namespace Dawn {
+  class Scene;
+  class Camera;
+  class RenderPipeline;
+
+  struct IRenderableContext {
+    Scene *scene;
+    Camera *camera;
+    RenderPipeline *renderPipeline;
+  };
+
   class IRenderable {
     public:
       /**
        * Returns the render passes for this renderable item, typically a scene
        * item component, e.g. a Material or a UI Item.
        * 
+       * @param context Context about the current renderer state.
        * @return Array of renderable passes.
        */
-      virtual std::vector<struct ShaderPassItem> getRenderPasses() = 0;
+      virtual std::vector<struct ShaderPassItem> getRenderPasses(
+        struct IRenderableContext &context
+      ) = 0;
   };
 }

src/dawn/scene/components/ui/CMakeLists.txt

@@ -8,6 +8,7 @@ target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     UICanvas.cpp
     UIComponent.cpp
+    UIComponentRenderable.cpp
     UILabel.cpp
     UIImage.cpp
     UIBorder.cpp

src/dawn/scene/components/ui/UIBorder.cpp

@@ -11,7 +11,7 @@ using namespace Dawn;
 UIBorder::UIBorder(SceneItem *item) :
   texture(nullptr),
   borderSize(glm::vec2(8, 8)),
-  UIComponent(item)
+  UIComponentRenderable(item)
 {
 }
 
@@ -25,7 +25,7 @@ float_t UIBorder::getContentHeight() {
   return this->height;
 }
 
-std::vector<struct ShaderPassItem> UIBorder::getRenderPasses() {
+std::vector<struct ShaderPassItem> UIBorder::getUIRenderPasses() {
   struct ShaderPassItem item;
   auto shader = getGame()->renderManager.uiShader;
   item.shader = shader;

src/dawn/scene/components/ui/UIBorder.hpp

@@ -4,13 +4,13 @@
 // https://opensource.org/licenses/MIT
 
 #pragma once
-#include "UIComponent.hpp"
+#include "UIComponentRenderable.hpp"
 #include "display/mesh/QuadMesh.hpp"
 
 #define UI_BORDER_QUAD_COUNT 9
 
 namespace Dawn {
-  class UIBorder : public UIComponent, public UIComponentRenderable {
+  class UIBorder : public UIComponentRenderable {
     private:
       Mesh mesh;
 
@@ -24,7 +24,7 @@ namespace Dawn {
 
       float_t getContentWidth() override;
       float_t getContentHeight() override;
-      std::vector<struct ShaderPassItem> getRenderPasses() override;
+      std::vector<struct ShaderPassItem> getUIRenderPasses() override;
       void onStart() override;
   };
 }

src/dawn/scene/components/ui/UIComponent.cpp

@@ -7,7 +7,6 @@
 
 using namespace Dawn;
 
-
 UIComponent::UIComponent(SceneItem *item) :
   SceneItemComponent(item),
   alignment(glm::vec4(0, 0, 128, 128)),

src/dawn/scene/components/ui/UIComponent.hpp

@@ -6,6 +6,8 @@
 #pragma once
 #include "scene/SceneItemComponent.hpp"
 #include "scene/components/display/IRenderable.hpp"
+#include "display/RenderPipeline.hpp"
+#include "display/RenderManager.hpp"
 #include "UICanvas.hpp"
 #include "util/mathutils.hpp"
 
@@ -22,20 +24,6 @@ namespace Dawn {
     UI_COMPONENT_ALIGN_UNIT_PERCENT
   };
 
-  class UIComponentRenderable : public IRenderable {
-    public:
-      /**
-       * Implemented UI Components that have rendering should implement this and
-       * return their rendering items. Items are passed back to the render
-       * pipeline.
-       * 
-       * @param projection Camera projection, obtained from the canvas.
-       * @param view Camera view, obtained from the canvas.
-       * @return A list of renderable shader pass items for this renderable.
-       */
-      virtual std::vector<struct ShaderPassItem> getRenderPasses() = 0;
-  };
-
   class UIComponent : public SceneItemComponent, public UIComponentDimensional {
     protected:
       float_t width = 1;
@@ -117,7 +105,7 @@ namespace Dawn {
        * 
        * @return Pointer to the UI Canvas this component is a child of.
        */
-      UICanvas * getCanvas();
+      virtual UICanvas * getCanvas();
 
       float_t getWidth() override;
       float_t getHeight() override;

src/dawn/scene/components/ui/UIComponentRenderable.cpp

@@ -0,0 +1,26 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "UIComponentRenderable.hpp"
+
+using namespace Dawn;
+
+UIComponentRenderable::UIComponentRenderable(SceneItem *i) : UIComponent(i) {
+
+}
+
+std::vector<struct ShaderPassItem> UIComponentRenderable::getRenderPasses(
+  struct IRenderableContext &context
+) {
+  if(
+    context.camera->getRenderTarget() !=
+    context.renderPipeline->renderManager->getBackBuffer()
+  ) {
+    auto canvas = this->getCanvas();
+    if(canvas->drawType == UI_DRAW_TYPE_WORLD_CAMERA_RELATIVE) return {};
+  }
+
+  return this->getUIRenderPasses();
+}

src/dawn/scene/components/ui/UIComponentRenderable.hpp

@@ -0,0 +1,26 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "UIComponent.hpp"
+
+namespace Dawn {
+  class UIComponentRenderable : public UIComponent, public IRenderable {
+    public:
+      UIComponentRenderable(SceneItem *item);
+
+      std::vector<struct ShaderPassItem> getRenderPasses(
+        struct IRenderableContext &context
+      ) override;
+
+      /**
+       * Higher level means to determine the render passes for this UI item. We
+       * handle some of the more common functionality in the above override.
+       * 
+       * @return Array of render passes for this UI item.
+       */
+      virtual std::vector<struct ShaderPassItem> getUIRenderPasses() = 0;
+  };
+}

src/dawn/scene/components/ui/UIImage.cpp

@@ -10,7 +10,7 @@ using namespace Dawn;
 
 UIImage::UIImage(SceneItem *item) :
   texture(nullptr),
-  UIComponent(item)
+  UIComponentRenderable(item)
 {
 
 }
@@ -25,12 +25,12 @@ float_t UIImage::getContentHeight() {
   return this->height;
 }
 
-std::vector<struct ShaderPassItem> UIImage::getRenderPasses() {
+std::vector<struct ShaderPassItem> UIImage::getUIRenderPasses() {
   struct ShaderPassItem item;
   auto shader = getGame()->renderManager.uiShader;
   item.shader = shader;
   item.colorValues[shader->paramColor] = this->color;
-  item.parameterBuffers[shader->bufferUiCanvas] = &this->getCanvas()->shaderBuffer;
+  item.parameterBuffers[shader->bufferUiCanvas] = &getCanvas()->shaderBuffer;
   item.matrixValues[shader->paramModel] = this->transform->getWorldTransform();
   if(this->texture == nullptr) {
     item.boolValues[shader->paramHasTexture] = false;

src/dawn/scene/components/ui/UIImage.hpp

@@ -4,11 +4,11 @@
 // https://opensource.org/licenses/MIT
 
 #pragma once
-#include "UIComponent.hpp"
+#include "UIComponentRenderable.hpp"
 #include "display/mesh/QuadMesh.hpp"
 
 namespace Dawn {
-  class UIImage : public UIComponent, public UIComponentRenderable {
+  class UIImage : public UIComponentRenderable {
     private:
       Mesh mesh;
 
@@ -22,7 +22,7 @@ namespace Dawn {
 
       float_t getContentWidth() override;
       float_t getContentHeight() override;
-      std::vector<struct ShaderPassItem> getRenderPasses() override;
+      std::vector<struct ShaderPassItem> getUIRenderPasses() override;
       void onStart() override;
   };
 }

src/dawn/scene/components/ui/UILabel.cpp

@@ -9,7 +9,7 @@
 using namespace Dawn;
 
 UILabel::UILabel(SceneItem *item) :
-  UIComponent(item),
+  UIComponentRenderable(item),
   text(""),
   fontSize(10.0f),
   font(&item->scene->game->renderManager.defaultFont),
@@ -67,7 +67,7 @@ void UILabel::updateMesh() {
   this->eventFontRebuffered.invoke();
 }
 
-std::vector<struct ShaderPassItem> UILabel::getRenderPasses() {
+std::vector<struct ShaderPassItem> UILabel::getUIRenderPasses() {
   if(!this->hasText()) return {};
   this->updateMesh();
   

src/dawn/scene/components/ui/UILabel.hpp

@@ -4,14 +4,14 @@
 // https://opensource.org/licenses/MIT
 
 #pragma once
-#include "UIComponent.hpp"
+#include "UIComponentRenderable.hpp"
 #include "display/font/Font.hpp"
 
 #define UI_LABEL_MAX_WIDTH_NONE -1
 #define UI_LABEL_MAX_WIDTH_ALIGN 0
 
 namespace Dawn {
-  class UILabel : public UIComponent, public UIComponentRenderable {
+  class UILabel : public UIComponentRenderable {
     private:
       bool_t needsRebuffering = true;
       Mesh mesh;
@@ -53,7 +53,7 @@ namespace Dawn {
 
       float_t getContentWidth() override;
       float_t getContentHeight() override;
-      std::vector<struct ShaderPassItem> getRenderPasses() override;
+      std::vector<struct ShaderPassItem> getUIRenderPasses() override;
       void onStart() override;
   };
 }