Skip draws with zero vertex count (#5149)

src/Ryujinx.Graphics.Gpu/Shader/GpuAccessorBase.cs

@@ -17,8 +17,6 @@ namespace Ryujinx.Graphics.Gpu.Shader
         private readonly ResourceCounts _resourceCounts;
         private readonly int _stageIndex;
 
-        private readonly int[] _constantBufferBindings;
-
         /// <summary>
         /// Creates a new GPU accessor.
         /// </summary>
@@ -28,12 +26,6 @@ namespace Ryujinx.Graphics.Gpu.Shader
             _context = context;
             _resourceCounts = resourceCounts;
             _stageIndex = stageIndex;
-
-            if (context.Capabilities.Api != TargetApi.Vulkan)
-            {
-                _constantBufferBindings = new int[Constants.TotalGpUniformBuffers];
-                _constantBufferBindings.AsSpan().Fill(-1);
-            }
         }
 
         public int QueryBindingConstantBuffer(int index)
@@ -45,15 +37,7 @@ namespace Ryujinx.Graphics.Gpu.Shader
             }
             else
             {
-                int binding = _constantBufferBindings[index];
+                return _resourceCounts.UniformBuffersCount++;
-
-                if (binding < 0)
-                {
-                    binding = _resourceCounts.UniformBuffersCount++;
-                    _constantBufferBindings[index] = binding;
-                }
-
-                return binding;
             }
         }
 

src/Ryujinx.Graphics.Shader/Translation/ResourceManager.cs

@@ -17,6 +17,8 @@ namespace Ryujinx.Graphics.Shader.Translation
 
         private readonly HashSet<int> _usedConstantBufferBindings;
 
+        public ShaderProperties Properties => _properties;
+
         public ResourceManager(ShaderStage stage, IGpuAccessor gpuAccessor, ShaderProperties properties)
         {
             _gpuAccessor = gpuAccessor;
@@ -98,19 +100,6 @@ namespace Ryujinx.Graphics.Shader.Translation
             _properties.AddConstantBuffer(binding, new BufferDefinition(BufferLayout.Std140, 0, binding, name, type));
         }
 
-        public void InheritFrom(ResourceManager other)
-        {
-            for (int i = 0; i < other._cbSlotToBindingMap.Length; i++)
-            {
-                int binding = other._cbSlotToBindingMap[i];
-
-                if (binding >= 0)
-                {
-                    _cbSlotToBindingMap[i] = binding;
-                }
-            }
-        }
-
         public static string GetShaderStagePrefix(ShaderStage stage)
         {
             uint index = (uint)stage;

src/Ryujinx.Graphics.Shader/Translation/ShaderConfig.cs

@@ -39,9 +39,9 @@ namespace Ryujinx.Graphics.Shader.Translation
 
         public TranslationOptions Options { get; }
 
-        public ShaderProperties Properties { get; }
+        public ShaderProperties Properties => ResourceManager.Properties;
 
-        public ResourceManager ResourceManager { get; }
+        public ResourceManager ResourceManager { get; set; }
 
         public bool TransformFeedbackEnabled { get; }
 
@@ -159,8 +159,7 @@ namespace Ryujinx.Graphics.Shader.Translation
             _sbSlots        = new Dictionary<int, int>();
             _sbSlotsReverse = new Dictionary<int, int>();
 
-            Properties = new ShaderProperties();
+            ResourceManager = new ResourceManager(stage, gpuAccessor, new ShaderProperties());
-            ResourceManager = new ResourceManager(stage, gpuAccessor, Properties);
         }
 
         public ShaderConfig(
@@ -429,8 +428,6 @@ namespace Ryujinx.Graphics.Shader.Translation
 
         public void InheritFrom(ShaderConfig other)
         {
-            ResourceManager.InheritFrom(other.ResourceManager);
-
             ClipDistancesWritten |= other.ClipDistancesWritten;
             UsedFeatures |= other.UsedFeatures;
 

src/Ryujinx.Graphics.Shader/Translation/TranslatorContext.cs

@@ -155,6 +155,9 @@ namespace Ryujinx.Graphics.Shader.Translation
             {
                 other._config.MergeOutputUserAttributes(_config.UsedOutputAttributes, Enumerable.Empty<int>());
 
+                // We need to share the resource manager since both shaders accesses the same constant buffers.
+                other._config.ResourceManager = _config.ResourceManager;
+
                 FunctionCode[] otherCode = EmitShader(other._program, other._config, initializeOutputs: true, out int aStart);
 
                 code = Combine(otherCode, code, aStart);

src/Ryujinx.Graphics.Vulkan/PipelineBase.cs

@@ -358,7 +358,7 @@ namespace Ryujinx.Graphics.Vulkan
 
         public void Draw(int vertexCount, int instanceCount, int firstVertex, int firstInstance)
         {
-            if (!_program.IsLinked)
+            if (!_program.IsLinked || vertexCount == 0)
             {
                 return;
             }
@@ -422,7 +422,7 @@ namespace Ryujinx.Graphics.Vulkan
 
         public void DrawIndexed(int indexCount, int instanceCount, int firstIndex, int firstVertex, int firstInstance)
         {
-            if (!_program.IsLinked)
+            if (!_program.IsLinked || indexCount == 0)
             {
                 return;
             }