Use resolved buffers for msaa (#2278)

Author: adrien-de-tocqueville

com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/HDRenderPipeline.PostProcess.cs

@@ -36,7 +36,7 @@ TextureHandle RenderPostProcess(    RenderGraph     renderGraph,
                     passData.afterPostProcessBuffer = builder.UseColorBuffer(renderGraph.CreateTexture(
                         new TextureDesc(Vector2.one, true, true) { colorFormat = GraphicsFormat.R8G8B8A8_SRGB, clearBuffer = true, clearColor = Color.black, name = "OffScreen AfterPostProcess" }), 0);
                     if (passData.parameters.useDepthBuffer)
-                        passData.depthStencilBuffer = builder.UseDepthBuffer(prepassOutput.depthBuffer, DepthAccess.ReadWrite);
+                        passData.depthStencilBuffer = builder.UseDepthBuffer(prepassOutput.resolvedDepthBuffer, DepthAccess.ReadWrite);
                     passData.opaqueAfterPostprocessRL = builder.UseRendererList(renderGraph.CreateRendererList(passData.parameters.opaqueAfterPPDesc));
                     passData.transparentAfterPostprocessRL = builder.UseRendererList(renderGraph.CreateRendererList(passData.parameters.transparentAfterPPDesc));
 

com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/HDRenderPipeline.RenderGraph.cs

@@ -181,12 +181,12 @@ void ExecuteWithRenderGraph(    RenderRequest           renderRequest,
 
                 if (hdCamera.frameSettings.IsEnabled(FrameSettingsField.TransparentsWriteMotionVector))
                 {
-                    prepassOutput.motionVectorsBuffer = ResolveMotionVector(m_RenderGraph, hdCamera, prepassOutput.motionVectorsBuffer);
+                    prepassOutput.resolvedMotionVectorsBuffer = ResolveMotionVector(m_RenderGraph, hdCamera, prepassOutput.motionVectorsBuffer);
                 }
 
                 // We push the motion vector debug texture here as transparent object can overwrite the motion vector texture content.
                 if (m_Asset.currentPlatformRenderPipelineSettings.supportMotionVectors)
-                    PushFullScreenDebugTexture(m_RenderGraph, prepassOutput.motionVectorsBuffer, FullScreenDebugMode.MotionVectors);
+                    PushFullScreenDebugTexture(m_RenderGraph, prepassOutput.resolvedMotionVectorsBuffer, FullScreenDebugMode.MotionVectors);
 
                 // TODO RENDERGRAPH : Move this to the end after we do move semantic and graph culling to avoid doing the rest of the frame for nothing
                 // Transparent objects may write to the depth and motion vectors buffers.