1 files changed, 140 insertions, 0 deletions
diff --git a/Source/Timing/intel_gl_perf.h b/Source/Timing/intel_gl_perf.h
new file mode 100644
index 00000000..333b773c
--- /dev/null
+++ b/Source/Timing/intel_gl_perf.h
@@ -0,0 +1,140 @@
+//-----------------------------------------------------------------------------
+//           Name: intel_gl_perf.h
+//      Developer: Wolfire Games LLC
+//    Description:
+//        License: Read below
+//-----------------------------------------------------------------------------
+//
+//   Copyright 2022 Wolfire Games LLC
+//
+//   Licensed under the Apache License, Version 2.0 (the "License");
+//   you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+//       http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+//
+//-----------------------------------------------------------------------------
+#pragma once
+
+#ifdef INTEL_TIMING
+#include <Internal/integer.h>
+#include <Utility/disallow_copy_and_assign.h>
+
+#include <opengl.h>
+
+#include <vector>
+#include <map>
+#include <queue>
+#include <string>
+#include <stack>
+
+//const char IntelGLPerf_basic_counters_name[] = "Intel_HD_MD_Render_Basic_Hardware_Counters";
+
+//const char* IntelGLPerf_basic_counters[] = {"GpuTime", NULL};
+
+const int kIntelGLPerf_TypeId_Standard = 1; 
+
+struct IntelGLPerfQuery
+{
+	std::string name;
+	int type_id;
+	GLuint id;
+	GLuint size;
+};
+
+struct IntelGLPerfQueryCounter
+{
+	GLuint query_id;
+	std::string name;
+	GLuint id;
+	GLuint offset;
+	GLenum data_type;
+	GLuint size;
+};
+
+class IntelGLPerfRequest {
+public:
+	IntelGLPerfRequest( std::string query_name, int type_id, std::vector<std::string> query_counter_names );
+
+	std::string query_name;
+	int type_id;
+	std::vector<std::string> query_counter_names;
+};
+
+struct PerfInstance {
+	GLuint instance_id;
+	GLuint query_id;
+	int group;
+	const char* file;
+	int line;
+};
+
+class IntelGLPerf {
+	bool perf_available;
+	char* data_dest;
+
+	std::vector<IntelGLPerfRequest> perf_requests;
+
+	std::vector<IntelGLPerfQuery> queries;
+	std::vector<IntelGLPerfQueryCounter> query_counters;
+
+	std::map<std::string,GLuint> active_query_handles;
+
+	std::vector<PerfInstance> perf_query_instances;
+
+	GLuint max_query_size;
+
+	std::stack<GLuint> query_handle_stack;
+
+	std::ofstream csv_output;
+public:
+	IntelGLPerf();
+	~IntelGLPerf();
+
+	void Init();
+	void Finalize();
+
+	void PerfGPUBegin(int type, int group, const char* file, const int line);
+	void PerfGPUEnd( );
+
+	void PostFrameSwap();
+};
+
+extern IntelGLPerf* intelGLTiming;
+
+
+#define INTEL_GL_PERF_INIT( ) \
+    intelGLTiming->Init()
+
+#define INTEL_GL_PERF_START( ) \
+	if( intelGLTiming ) intelGLTiming->PerfGPUBegin( kIntelGLPerf_TypeId_Standard, 0, __FILE__, __LINE__ )
+
+#define INTEL_GL_PERF_END( ) \
+	if( intelGLTiming ) intelGLTiming->PerfGPUEnd()
+
+#define INTEL_GL_PERF_SWAP() \
+	intelGLTiming->PostFrameSwap()
+
+#define INTEL_GL_PERF_FINALIZE() \
+    intelGLTiming->Finalize()
+
+#else
+
+#define INTEL_GL_PERF_INIT()
+
+#define INTEL_GL_PERF_START( )
+
+#define INTEL_GL_PERF_END( )
+
+#define INTEL_GL_PERF_SWAP()
+
+#define INTEL_GL_PERF_FINALIZE()
+
+#endif
+