OpenCL: More work on centralization (need SCons reflection)

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4351 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/Common/Src/OpenCL.cpp

@@ -0,0 +1,95 @@
+// Copyright (C) 2003 Dolphin Project.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 2.0.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official SVN repository and contact information can be found at
+// http://code.google.com/p/dolphin-emu/
+
+// TODO: Make a more centralized version of this (for now every plugin that will use it will create its own context, which is weird). An object maybe?
+
+#include "OpenCL.h"
+#include "Common.h"
+
+namespace OpenCL {
+
+cl_context g_context = NULL;
+cl_command_queue g_cmdq = NULL;
+
+bool Initialize() {
+	if(g_context)
+		return false;
+	
+#if defined(HAVE_OPENCL) && HAVE_OPENCL
+
+	int err;                            // error code returned from api calls
+	cl_device_id device_id;
+            
+    // Connect to a compute device
+    //
+    int gpu = 1; // I think we should use CL_DEVICE_TYPE_ALL
+    err = clGetDeviceIDs(NULL, gpu ? CL_DEVICE_TYPE_GPU : CL_DEVICE_TYPE_CPU, 1, &device_id, NULL);
+    if (err != CL_SUCCESS)
+    {
+        PanicAlert("Error: Failed to create a device group!\n");
+        return false;
+    }
+  
+    // Create a compute context 
+    //
+    g_context = clCreateContext(0, 1, &device_id, NULL, NULL, &err);
+    if (!g_context)
+    {
+        PanicAlert("Error: Failed to create a compute context!\n");
+        return false;
+    }
+
+    // Create a command commands
+    //
+    g_cmdq = clCreateCommandQueue(g_context, device_id, 0, &err);
+    if (!g_cmdq)
+    {
+        PanicAlert("Error: Failed to create a command commands!\n");
+        return false;
+    }
+
+	return true;
+#else
+	return false;
+#endif
+}
+
+cl_context GetInstance() {
+	return g_context;
+}
+
+cl_command_queue GetCommandQueue() {
+	return g_cmdq;
+}
+
+cl_program CompileProgram(const char *program, unsigned int size) {
+	// TODO
+	return NULL;
+}
+
+void Destroy() {
+	if(!g_context)
+		return;
+
+#if defined(HAVE_OPENCL) && HAVE_OPENCL
+	clReleaseCommandQueue(g_cmdq); 
+	clReleaseContext(g_context);
+#endif
+}
+
+
+};