Allow camera render target to be null

assets/games/liminal/VNTextbox.xml

@@ -3,7 +3,7 @@
 
   <UIBorder
     ref="border"
-    borderSize="8, 8"
+    borderSize="16, 16"
     alignment="50, 0, 0, 0"
     alignUnitLeft="UI_COMPONENT_ALIGN_UNIT_PERCENT"
     ref="border"
@@ -12,8 +12,11 @@
   />
 
   <child>
-    <UILabel text="bruh" font="font_main" fontSize="32"
-      alignment="16, 16, -1, -1"
+    <UILabel
+      text="This shows how I can now make UI elements align based on percentages of the screen."
+      font="font_main"
+      fontSize="32"
+      alignment="16, 16, 0, 0"
       alignX="UI_COMPONENT_ALIGN_STRETCH"
       alignY="UI_COMPONENT_ALIGN_STRETCH"
     />

src/dawn/display/RenderPipeline.cpp

@@ -60,7 +60,10 @@ void RenderPipeline::renderScene(Scene *scene) {
 
     // Leave the backbuffer camera(s) to last, so we skip them. we do this so
     // that children framebuffers contain the CURRENT frame, not LAST frame.
-    if(cameraTarget == backBuffer) {
+    if(cameraTarget == nullptr) {
+      ++it;
+      continue;
+    } else if(cameraTarget == backBuffer) {
       backBufferCamera = *it;
     } else {
       this->renderSceneCamera(scene, *it);

src/dawn/scene/components/display/Camera.cpp

@@ -10,7 +10,7 @@ using namespace Dawn;
 
 Camera::Camera(SceneItem *item) :
   SceneItemComponent(item),
-  renderTarget(nullptr),
+  renderTarget(item->scene->game->renderManager.getBackBuffer()),
   fov(0.785398f),// 45 degrees,
   type(CAMERA_TYPE_PERSPECTIVE),
   orthoLeft(0.0f),
@@ -52,10 +52,6 @@ glm::mat4 Camera::getProjection() {
 }
 
 RenderTarget * Camera::getRenderTarget() {
-  auto v = this->renderTarget;
-  if(this->renderTarget == nullptr) {
-    return this->getGame()->renderManager.getBackBuffer();
-  }
   return (RenderTarget*)this->renderTarget;
 }
 
@@ -80,6 +76,11 @@ void Camera::onStart() {
   useEffectWithTeardown([&]{
     auto rt = this->getRenderTarget();
     this->projectionNeedsUpdating = true;
+    if(rt == nullptr) {
+      return evtResized = [&]{
+
+      };
+    }
     this->eventRenderTargetResized.invoke(rt->getWidth(), rt->getHeight());
     
     // Subscribe to new render target resized.
@@ -100,6 +101,7 @@ void Camera::onStart() {
   
   // Sub to evt legacy, we don't invoke the useTeardown to avoid invoking
   // the state event for this camera when we don't need to.
+  if(!this->getRenderTarget()) return;
   evtResized = useEventLegacy([&](RenderTarget *rt, float_t w, float_t h){
     this->projectionNeedsUpdating = true;
     this->eventRenderTargetResized.invoke(w, h);

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

@@ -53,8 +53,6 @@ void UIBorder::onStart() {
   UIComponent::onStart();
 
   auto rebufferQuad = [&] {
-    std::cout << "W" << this->getWidth() << std::endl;
-    std::cout << "H" << this->getHeight() << std::endl;
     glm::vec2 tSize = glm::vec2(1, 1) / 3.0f;
     glm::vec2 bSize = (glm::vec2)borderSize;
     glm::vec2 iSize = glm::vec2(this->getWidth(), this->getHeight()) - ( bSize * 2.0f );

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

@@ -13,7 +13,7 @@ UILabel::UILabel(SceneItem *item) :
   text(""),
   fontSize(10.0f),
   font(&item->scene->game->renderManager.defaultFont),
-  maxWidth(UI_LABEL_MAX_WIDTH_NONE)
+  maxWidth(UI_LABEL_MAX_WIDTH_ALIGN)
 {
 }
 

src/dawnliminal/scenes/HelloWorldScene.hpp

@@ -13,6 +13,7 @@ namespace Dawn {
   class HelloWorldScene : public Scene {
     protected:
       Camera *camera;
+      Camera *camNew;
       UICanvas *canvas;
       Texture text;
 
@@ -25,6 +26,10 @@ namespace Dawn {
         camera->fov = 0.436332f;
         camera->transform->lookAt(glm::vec3(10, 10, 10), glm::vec3(0, 0, 0));
 
+        camNew = Camera::create(this);
+        camNew->transform->lookAt(glm::vec3(10, 10, 10), glm::vec3(0, 0, 0));
+        camNew->renderTarget = nullptr;
+
         auto cube = SimpleSpinningCubePrefab::create(this);
 
         auto textbox = VNTextbox::create(this);