diff --git a/deno_webgpu/webgpu.idl b/deno_webgpu/webgpu.idl
index 5ea251e7744..00189c2744e 100644
--- a/deno_webgpu/webgpu.idl
+++ b/deno_webgpu/webgpu.idl
@@ -908,7 +908,7 @@ GPURenderPassEncoder includes GPUBindingCommandsMixin;
 GPURenderPassEncoder includes GPURenderCommandsMixin;
 
 dictionary GPURenderPassDescriptor : GPUObjectDescriptorBase {
-    required sequence<GPURenderPassColorAttachment> colorAttachments;
+    required sequence<GPURenderPassColorAttachment?> colorAttachments;
     GPURenderPassDepthStencilAttachment depthStencilAttachment;
     GPUQuerySet occlusionQuerySet;
 };
diff --git a/wgpu-core/src/command/render.rs b/wgpu-core/src/command/render.rs
index ae54a1202f9..095c8ee2f51 100644
--- a/wgpu-core/src/command/render.rs
+++ b/wgpu-core/src/command/render.rs
@@ -441,7 +441,7 @@ pub enum RenderPassErrorInner {
     InvalidDepthStencilAttachmentFormat(wgt::TextureFormat),
     #[error("attachment format {0:?} can not be resolved")]
     UnsupportedResolveTargetFormat(wgt::TextureFormat),
-    #[error("necessary attachments are missing")]
+    #[error("missing color or depth_tencil attachments, at least one is required.")]
     MissingAttachments,
     #[error("attachments have differing sizes: {previous:?} is followed by {mismatch:?}")]
     AttachmentsDimensionMismatch {
@@ -930,7 +930,8 @@ impl<'a, A: HalApi> RenderPassInfo<'a, A> {
             });
         }
 
-        if sample_count != 1 && sample_count != 4 {
+        let extent = extent.ok_or(RenderPassErrorInner::MissingAttachments)?;
+        if colors.len() > 0 && sample_count != 1 && sample_count != 4 {
             return Err(RenderPassErrorInner::InvalidSampleCount(sample_count));
         }
 
@@ -946,7 +947,6 @@ impl<'a, A: HalApi> RenderPassInfo<'a, A> {
                 .collect(),
             depth_stencil: depth_stencil_attachment.map(|at| view_guard.get(at.view).unwrap()),
         };
-        let extent = extent.ok_or(RenderPassErrorInner::MissingAttachments)?;
 
         let multiview = detected_multiview.expect("Multiview was not detected, no attachments");
         let context = RenderPassContext {