[vulkan, rasterizer] Filling missing byte count handling when TFB is not available

src/video_core/renderer_vulkan/vk_rasterizer.cpp

@@ -354,11 +354,18 @@ void RasterizerVulkan::DrawIndirect() {
         const auto& buffer = indirect_buffer.first;
         const auto& offset = indirect_buffer.second;
         if (params.is_byte_count) {
-            scheduler.Record([buffer_obj = buffer->Handle(), offset,
-                              stride = params.stride](vk::CommandBuffer cmdbuf) {
-                cmdbuf.DrawIndirectByteCountEXT(1, 0, buffer_obj, offset, 0,
-                                                static_cast<u32>(stride));
-            });
+            if (!device.IsExtTransformFeedbackSupported()) {
+                scheduler.Record([buffer_obj = buffer->Handle(), offset,
+                                  stride = params.stride](vk::CommandBuffer cmdbuf) {
+                    cmdbuf.DrawIndirect(buffer_obj, offset, 1, static_cast<u32>(stride));
+                });
+            } else {
+                scheduler.Record([buffer_obj = buffer->Handle(), offset,
+                                  stride = params.stride](vk::CommandBuffer cmdbuf) {
+                    cmdbuf.DrawIndirectByteCountEXT(1, 0, buffer_obj, offset, 0,
+                                                    static_cast<u32>(stride));
+                });
+            }
             return;
         }
         if (params.include_count) {

src/video_core/vulkan_common/vulkan_device.h

@@ -542,12 +542,10 @@ public:
         return extensions.transform_feedback;
     }
 
-    /// Returns true if the device supports VK_EXT_transform_feedback.
     bool AreTransformFeedbackGeometryStreamsSupported() const {
         return features.transform_feedback.geometryStreams;
     }
 
-    /// Returns true if transform feedback preserves provoking vertex.
     bool IsTransformFeedbackProvokingVertexPreserved() const {
         return features.provoking_vertex.transformFeedbackPreservesProvokingVertex;
     }
@@ -714,7 +712,7 @@ public:
         return has_renderdoc || has_nsight_graphics || has_radeon_gpu_profiler;
     }
 
-    /// @returns True if compute pipelines can cause crashing.
+    /// Returns true if compute pipelines can cause crashing.
     bool HasBrokenCompute() const {
         return has_broken_compute;
     }