Support alpha channel initial work

In this initial work, all (almost) color properties are converted into a new type (float4) to
support an alpha channel. Alpha channel option is shown in the color dialog for Layer and Scene
background properties only. The following is remaining:
- Scene background alpha doesn't work in the editor (works in the viewer RT1)

Task-number: QT3DS-3128
Change-Id: Ib5540ebc8e2ff68709473451e4a92bf66ddb8ad2
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/Authoring/Studio/Render/StudioSubPresentationRenderer.cpp b/src/Authoring/Studio/Render/StudioSubPresentationRenderer.cpp
index 0af8758a..146d0956 100644
--- a/src/Authoring/Studio/Render/StudioSubPresentationRenderer.cpp
+++ b/src/Authoring/Studio/Render/StudioSubPresentationRenderer.cpp
@@ -321,10 +321,10 @@ void StudioSubpresentationRenderer::RenderWithClear(
                     const SOffscreenRendererEnvironment &inEnvironment,
                     NVRenderContext &inRenderContext, QT3DSVec2 inPresentationScaleFactor,
                     SScene::RenderClearCommand inColorBufferNeedsClear,
-                    QT3DSVec3 inclearColor,
+                    QT3DSVec4 inclearColor,
                     const SRenderInstanceId instanceId)
 {
-    inRenderContext.SetClearColor(QT3DSVec4(inclearColor, 1.0));
+    inRenderContext.SetClearColor(inclearColor);
     Render(inEnvironment, inRenderContext, inPresentationScaleFactor,
            inColorBufferNeedsClear, instanceId);
 }