[dxvk] Make query pools more usable as query allocators

src/dxvk/dxvk_cmdlist.h

@@ -7,6 +7,7 @@
 #include "dxvk_lifetime.h"
 #include "dxvk_limits.h"
 #include "dxvk_pipelayout.h"
+#include "dxvk_query_pool.h"
 #include "dxvk_staging.h"
 
 namespace dxvk {
@@ -72,6 +73,18 @@ namespace dxvk {
       m_resources.trackResource(rc);
     }
     
+    /**
+     * \brief Adds a query range to track
+     * 
+     * Query data will be retrieved and written back to
+     * the query objects after the command buffer has
+     * finished executing on the GPU.
+     * \param [in] queries The query range
+     */
+    void trackQueryRange(const DxvkQueryRange& queries) {
+      m_queryRanges.push_back(queries);
+    }
+    
     /**
      * \brief Resets the command list
      * 
@@ -436,12 +449,14 @@ namespace dxvk {
     DxvkStagingBufferSlice stagedAlloc(
             VkDeviceSize            size);
     
+    
     void stagedBufferCopy(
             VkBuffer                dstBuffer,
             VkDeviceSize            dstOffset,
             VkDeviceSize            dataSize,
       const DxvkStagingBufferSlice& dataSlice);
     
+    
     void stagedBufferImageCopy(
             VkImage                 dstImage,
             VkImageLayout           dstImageLayout,
@@ -459,6 +474,8 @@ namespace dxvk {
     DxvkDescriptorAlloc m_descAlloc;
     DxvkStagingAlloc    m_stagingAlloc;
     
+    std::vector<DxvkQueryRange> m_queryRanges;
+    
   };
   
 }

src/dxvk/dxvk_context.cpp

@@ -1197,6 +1197,17 @@ namespace dxvk {
   }
   
   
+  void DxvkContext::writeTimestamp(const DxvkQueryRevision& query) {
+    DxvkQueryHandle handle = this->allocateQuery(query);
+    
+    m_cmd->cmdWriteTimestamp(
+      VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
+      handle.queryPool, handle.queryId);
+    
+    query.query->endRecording(query.revision);
+  }
+  
+  
   void DxvkContext::renderPassBegin() {
     if (!m_flags.test(DxvkContextFlag::GpRenderPassBound)
      && (m_state.om.framebuffer != nullptr)) {
@@ -1615,16 +1626,14 @@ namespace dxvk {
     
   DxvkQueryHandle DxvkContext::allocateQuery(const DxvkQueryRevision& query) {
     // TODO implement
-    return DxvkQueryHandle { };
+    return DxvkQueryHandle();
   }
   
   
   void DxvkContext::resetQueryPool(const Rc<DxvkQueryPool>& pool) {
     this->renderPassEnd();
     
-    m_cmd->cmdResetQueryPool(
-      pool->handle(), 0,
-      pool->queryCount());
+    pool->reset(m_cmd);
   }
   
   

src/dxvk/dxvk_context.h

@@ -542,6 +542,13 @@ namespace dxvk {
             uint32_t            attachment,
       const DxvkBlendMode&      blendMode);
     
+    /**
+     * \brief Writes to a timestamp query
+     * \param [in] query The timestamp query
+     */
+    void writeTimestamp(
+      const DxvkQueryRevision&  query);
+    
   private:
     
     const Rc<DxvkDevice> m_device;
@@ -551,6 +558,10 @@ namespace dxvk {
     DxvkContextState    m_state;
     DxvkBarrierSet      m_barriers;
     
+    Rc<DxvkQueryPool>   m_occlusionQueries;
+    Rc<DxvkQueryPool>   m_statisticQueries;
+    Rc<DxvkQueryPool>   m_timestampQueries;
+    
     VkPipeline m_gpActivePipeline = VK_NULL_HANDLE;
     VkPipeline m_cpActivePipeline = VK_NULL_HANDLE;
     

src/dxvk/dxvk_device.cpp

@@ -146,8 +146,9 @@ namespace dxvk {
   
   
   Rc<DxvkQueryPool> DxvkDevice::createQueryPool(
-          VkQueryType               queryType) {
-    return new DxvkQueryPool(m_vkd, queryType);
+          VkQueryType               queryType,
+          uint32_t                  queryCount) {
+    return new DxvkQueryPool(m_vkd, queryType, queryCount);
   }
   
   

src/dxvk/dxvk_device.h

@@ -212,7 +212,8 @@ namespace dxvk {
      * \param [in] queryType Query type
      */
     Rc<DxvkQueryPool> createQueryPool(
-            VkQueryType               queryType);
+            VkQueryType               queryType,
+            uint32_t                  queryCount);
     
     /**
      * \brief Creates a sampler object

src/dxvk/dxvk_query.h

@@ -96,6 +96,14 @@ namespace dxvk {
     DxvkQuery(VkQueryType type);
     ~DxvkQuery();
     
+    /**
+     * \brief Query type
+     * \returns Query type
+     */
+    VkQueryType type() const {
+      return m_type;
+    }
+    
     /**
      * \brief Resets the query object
      * 

src/dxvk/dxvk_query_pool.cpp

@@ -1,11 +1,15 @@
+#include "dxvk_cmdlist.h"
 #include "dxvk_query_pool.h"
 
 namespace dxvk {
   
   DxvkQueryPool::DxvkQueryPool(
     const Rc<vk::DeviceFn>& vkd,
-          VkQueryType       queryType)
-  : m_vkd(vkd), m_queryType(queryType) {
+          VkQueryType       queryType,
+          uint32_t          queryCount)
+  : m_vkd(vkd), m_queryCount(queryCount), m_queryType(queryType) {
+    m_queries.resize(queryCount);
+    
     VkQueryPoolCreateInfo info;
     info.sType      = VK_STRUCTURE_TYPE_QUERY_POOL_CREATE_INFO;
     info.pNext      = nullptr;
@@ -41,12 +45,19 @@ namespace dxvk {
   
   
   DxvkQueryHandle DxvkQueryPool::allocQuery(const DxvkQueryRevision& query) {
-    const DxvkQueryHandle result = { m_queryPool, m_queryId };
+    const uint32_t queryIndex = m_queryRangeOffset + m_queryRangeLength;
+    
+    if (queryIndex < m_queryCount) {
+      const DxvkQueryHandle result = { m_queryPool, queryIndex };
       
       query.query->associateQuery(query.revision, result);
-    m_queries.at(m_queryId) = query;
-    m_queryId += 1;
+      m_queries.at(queryIndex) = query;
+      
+      m_queryRangeLength += 1;
       return result;
+    } else {
+      return DxvkQueryHandle { VK_NULL_HANDLE, 0 };
+    }
   }
   
   
@@ -72,4 +83,12 @@ namespace dxvk {
     return VK_SUCCESS;
   }
   
+  
+  void DxvkQueryPool::reset(const Rc<DxvkCommandList>& cmd) {
+    cmd->cmdResetQueryPool(m_queryPool, 0, m_queryCount);
+    
+    m_queryRangeOffset = 0;
+    m_queryRangeLength = 0;
+  }
+  
 }

src/dxvk/dxvk_query_pool.h

@@ -4,6 +4,21 @@
 
 namespace dxvk {
   
+  class DxvkCommandList;
+  class DxvkQueryPool;
+  
+  /**
+   * \brief Query range
+   * 
+   * 
+   */
+  struct DxvkQueryRange {
+    Rc<DxvkQueryPool> queryPool;
+    
+    uint32_t queryIndex = 0;
+    uint32_t queryCount = 0;
+  };
+  
   /**
    * \brief Query pool
    * 
@@ -17,7 +32,8 @@ namespace dxvk {
     
     DxvkQueryPool(
       const Rc<vk::DeviceFn>& vkd,
-            VkQueryType       queryType);
+            VkQueryType       queryType,
+            uint32_t          queryCount);
     
     ~DxvkQueryPool();
     
@@ -29,14 +45,6 @@ namespace dxvk {
       return m_queryPool;
     }
     
-    /**
-     * \brief Query count
-     * \returns Query count
-     */
-    uint32_t queryCount() const {
-      return MaxNumQueryCountPerPool;
-    }
-    
     /**
      * \brief Allocates a Vulkan query
      * 
@@ -57,15 +65,28 @@ namespace dxvk {
             uint32_t          queryIndex,
             uint32_t          queryCount);
     
+    /**
+     * \brief Resets query pool
+     * 
+     * Resets the Vulkan query pool itself, as
+     * well as the the internal query allocator.
+     * \param [in] cmd Command list
+     */
+    void reset(
+      const Rc<DxvkCommandList>& cmd);
+    
   private:
     
     Rc<vk::DeviceFn> m_vkd;
     
+    uint32_t    m_queryCount;
     VkQueryType m_queryType;
     VkQueryPool m_queryPool = VK_NULL_HANDLE;
     
-    std::array<DxvkQueryRevision, MaxNumQueryCountPerPool> m_queries;
-    uint32_t                                               m_queryId = 0;
+    std::vector<DxvkQueryRevision> m_queries;
+    
+    uint32_t m_queryRangeOffset = 0;
+    uint32_t m_queryRangeLength = 0;
     
   };
   

src/dxvk/meson.build

@@ -16,6 +16,7 @@ dxvk_src = files([
   'dxvk_descriptor.cpp',
   'dxvk_device.cpp',
   'dxvk_extensions.cpp',
+  'dxvk_event.cpp',
   'dxvk_format.cpp',
   'dxvk_framebuffer.cpp',
   'dxvk_graphics.cpp',