Add renderer texture copy command

src/renderer_api/recording_renderer.cpp

@@ -397,6 +397,49 @@ pp::foundation::Status RecordingCommandContext::upload_texture(
     return pp::foundation::Status::success();
 }
 
+pp::foundation::Status RecordingCommandContext::copy_texture(
+    ITexture2D& source,
+    ReadbackRegion source_region,
+    ITexture2D& destination,
+    ReadbackRegion destination_region) noexcept
+{
+    if (in_render_pass_) {
+        return pp::foundation::Status::invalid_argument("texture copy must be outside a render pass");
+    }
+
+    const auto source_desc = source.desc();
+    const auto destination_desc = destination.desc();
+    const auto desc_status = validate_texture_copy_descs(
+        source_desc,
+        source_region,
+        destination_desc,
+        destination_region);
+    if (!desc_status.ok()) {
+        return desc_status;
+    }
+
+    const auto source_bytes = readback_byte_size(source_desc, source_region);
+    if (!source_bytes.ok()) {
+        return source_bytes.status();
+    }
+
+    const auto destination_bytes = readback_byte_size(destination_desc, destination_region);
+    if (!destination_bytes.ok()) {
+        return destination_bytes.status();
+    }
+
+    push_command(commands_, RecordedRenderCommand {
+        .kind = RecordedRenderCommandKind::copy_texture,
+        .source_desc = source_desc,
+        .destination_desc = destination_desc,
+        .source_region = source_region,
+        .destination_region = destination_region,
+        .copy_source_bytes = source_bytes.value(),
+        .copy_destination_bytes = destination_bytes.value(),
+    });
+    return pp::foundation::Status::success();
+}
+
 pp::foundation::Status RecordingCommandContext::capture_frame(
     IRenderTarget& target,
     IReadbackBuffer& destination) noexcept
@@ -626,6 +669,8 @@ const char* recorded_render_command_kind_name(RecordedRenderCommandKind kind) no
         return "draw";
     case RecordedRenderCommandKind::upload_texture:
         return "upload_texture";
+    case RecordedRenderCommandKind::copy_texture:
+        return "copy_texture";
     case RecordedRenderCommandKind::read_texture:
         return "read_texture";
     case RecordedRenderCommandKind::capture_frame: