Differences

This shows you the differences between two versions of the page.

--- camera [2025/01/15 04:35] – external edit 127.0.0.1
+++ camera [2025/05/27 20:33] (current) – adjusted wording bottinogames
@@ Line 1: / Line 1: @@
 ====== Camera ======
-==== Camera.SetReplacementShader ====
+===== Camera.SetReplacementShader =====
 SetReplacementShader will not render objects if their original materials don't contain any properties required by the replacement shader. For example, if your replacement shader uses _MainTex, and there is an object in the scene that doesn't have _MainTex, it won't be rendered at all.
@@ Line 9: / Line 9: @@
 Shaders can be replaced in the SceneView using ''[[sceneview|SceneView]].SetSceneViewShaderReplace''.
+----
+===== Camera.targetTexture =====
+According to the Unity Documentation:
+"When rendering into a texture, the camera always renders into the whole texture; effectively rect and pixelRect are ignored."
+This behavior is inconsistent across target platforms. On windows, the camera will use the rect and/or pixelRect. On OSX, Android, and iOS, the camera rect will be ignored. (tested on Built-in Render Pipeline, Unity 6000.0.34f1)
+If you have need to render into a sub-rect on render texture on those platforms, there are workarounds:
+  * For BiRP, using Camera.SetTargetBuffers will render to the target buffers utilizing the rect/pixelRect. (tested on Unity 6000.0.34f1) [[https://discussions.unity.com/t/dynamic-viewport-for-a-camera-rendering-to-a-target-texture/176258|unity discussion]]
+  * For URP/HDRP, a similar effect can be achieved with CommandBuffer.SetViewport and CommandBuffer.EnableScissorRect. (untested) [[https://discussions.unity.com/t/rendering-into-part-of-a-render-texture/636179/39|unity discussion]]