cleaned up an unused file, added check for sharing

include/CL_Wrapper.h

@@ -2,10 +2,12 @@
 #include <iostream>
 #include "util.hpp"
 #include <map>
+#include <string.h>
 
 #ifdef linux
 #include <CL/cl.h>
 #include <CL/opencl.h>
+#include <GL/glx.h>
 
 #elif defined _WIN32
 #include <CL/cl_gl.h>
@@ -35,13 +37,19 @@ public:
 	~CL_Wrapper();
 
     int acquire_platform_and_device();
-    int create_shared_context();
+
+	int create_shared_context();
+	int create_cl_context();
+
     int create_command_queue();
+
     int compile_kernel(std::string kernel_source, bool is_path, std::string kernel_name);
+
 	int create_buffer(std::string buffer_name, cl_uint size, void* data);
 	int create_buffer(std::string buffer_name, cl_uint size, void* data, cl_mem_flags flags);
-	int set_kernel_arg(std::string kernel_name, int index, std::string buffer_name);
 	int store_buffer(cl_mem, std::string buffer_name);
+
+	int set_kernel_arg(std::string kernel_name, int index, std::string buffer_name);
 	int run_kernel(std::string kernel_name, const int work_size);
 
 	bool assert(int error_code, std::string function_name);
@@ -56,7 +64,7 @@ private:
 
     int error = 0;
 	bool initialized = false;
-
+	bool cl_khr_gl_sharing_fallback = false;
 
     cl_platform_id platform_id;
 	cl_device_id device_id;

include/Map.h

@@ -2,16 +2,18 @@
 #include <SFML/System/Vector3.hpp>
 #include <SFML/System/Vector2.hpp>
 #include <SFML/Graphics/Color.hpp>
+#include <iostream>
+#include <list>
 #include <random>
 #include <iostream>
 #include <functional>
 #include <cmath>
-#define _USE_MATH_DEFINES
+#include "util.hpp"
-#include <math.h>
+#include <deque>
 #include <unordered_map>
 
-
+#define _USE_MATH_DEFINES
-#include <deque>
+#include <math.h>
 
 #define CHUNK_DIM 32
 

src/CL_Wrapper.cpp

@@ -1,12 +1,24 @@
 #include "CL_Wrapper.h"
 
 CL_Wrapper::CL_Wrapper() {
+
+    acquire_platform_and_device();
+
+    if (cl_khr_gl_sharing_fallback){
+        create_cl_context();
+    } else {
+        create_shared_context();
+    }
+
+    create_command_queue();
+
 }
 
 
 CL_Wrapper::~CL_Wrapper() {
 }
 
+
 int CL_Wrapper::acquire_platform_and_device(){
 
     // Get the number of platforms
@@ -88,37 +100,72 @@ int CL_Wrapper::acquire_platform_and_device(){
     platform_id = current_best_device.platform;
     device_id = current_best_device.id;
 
+    // Test for sharing
+    size_t ext_str_size = 1024;
+    char *ext_str = new char[ext_str_size];
+    clGetDeviceInfo(device_id, CL_DEVICE_EXTENSIONS, ext_str_size, ext_str, &ext_str_size);
+
+    if (std::string(ext_str).find("cl_khr_gl_sharing") == std::string::npos){
+        std::cout << "No support for the cl_khr_gl_sharing extension";
+        cl_khr_gl_sharing_fallback = true;
+    }
+
+    delete ext_str;
+
     return 1;
 };
 
+
+int CL_Wrapper::create_cl_context() {
+
+    // If the device doesn't support sharing then we have to create a regular context
+    cl_context_properties context_properties[] = {
+            CL_CONTEXT_PLATFORM, (cl_context_properties)platform_id
+    };
+
+    context = clCreateContext(
+        context_properties,
+        1,
+        &device_id,
+        nullptr, nullptr,
+        &error
+    );
+
+    if (assert(error, "clCreateContext"))
+        return -1;
+
+    return 0;
+}
+
+
 int CL_Wrapper::create_shared_context() {
 
     // Hurray for standards!
     // Setup the context properties to grab the current GL context
 
 #ifdef linux
+
     cl_context_properties context_properties[] = {
 		CL_GL_CONTEXT_KHR, (cl_context_properties)glXGetCurrentContext(),
 		CL_GLX_DISPLAY_KHR, (cl_context_properties)glXGetCurrentDisplay(),
-		CL_CONTEXT_PLATFORM, (cl_context_properties)platform,
+		CL_CONTEXT_PLATFORM, (cl_context_properties)platform_id,
 		0
 	};
 
 #elif defined _WIN32
 
-    // TODO: Clean this up next time I'm on a windows machine
-    //cl_context_properties context_properties[] = {
-	//    CL_CONTEXT_PLATFORM, (cl_context_properties) platformIds[0],
-	//    CL_GL_CONTEXT_KHR, (cl_context_properties) wglGetCurrentContext(),
-	//    CL_WGL_HDC_KHR, (cl_context_properties) wglGetCurrentDC(),
-	//    0
-	//};
 	HGLRC hGLRC = wglGetCurrentContext();
 	HDC hDC = wglGetCurrentDC();
-	cl_context_properties context_properties[] = { CL_CONTEXT_PLATFORM, (cl_context_properties)platform_id, CL_GL_CONTEXT_KHR, (cl_context_properties)hGLRC, CL_WGL_HDC_KHR, (cl_context_properties)hDC, 0 };
+	cl_context_properties context_properties[] = {
+	    CL_CONTEXT_PLATFORM, (cl_context_properties)platform_id,
+	    CL_GL_CONTEXT_KHR, (cl_context_properties)hGLRC,
+	    CL_WGL_HDC_KHR, (cl_context_properties)hDC,
+	    0
+	};
 
 
 #elif defined TARGET_OS_MAC
+
     CGLContextObj glContext = CGLGetCurrentContext();
     CGLShareGroupObj shareGroup = CGLGetShareGroup(glContext);
     cl_context_properties context_properties[] = {

src/Map.cpp

@@ -1,9 +1,4 @@
-#pragma once
 #include "Map.h"
-#include <iostream>
-#include <SFML/System/Vector3.hpp>
-#include <SFML/System/Vector2.hpp>
-#include "util.hpp"
 
 Map::Map(sf::Vector3i position) {
 	
@@ -365,18 +360,6 @@ void Map::setVoxel(sf::Vector3i world_position, int val) {
 
 }
 
-void Map::moveLight(sf::Vector2f in) {
-//
-//    sf::Vector3f light_spherical = CartToSphere(global_light);
-//
-//    light_spherical.y += in.y;
-//    light_spherical.x += in.x;
-//
-//    global_light = SphereToCart(light_spherical);
-//
-//    return;
-}
-
 void Chunk::set(int type) {
 	for (int i = 0; i < CHUNK_DIM * CHUNK_DIM * CHUNK_DIM; i++) {
 		voxel_data[i] = 0;

src/TestPlatform.cpp

@@ -1,138 +0,0 @@
-#pragma once
-#include <cstdio>
-#include <cstring>
-#include <iostream>
-#include <vector>
-
-#ifdef linux
-
-#elif defined _WIN32
-#define CL_USE_DEPRECATED_OPENCL_1_2_APIS
-#include <CL/cl_gl.h>
-#include <CL/cl.h>
-#include <CL/opencl.h>
-
-#elif defined TARGET_OS_MAC
-# include <OpenGL/OpenGL.h>
-# include <OpenCL/opencl.h>
-#endif
-
-
-
-#ifdef TARGET_OS_MAC
-int IsExtensionSupported(
-        const char* support_str,
-        const char* ext_string,
-        size_t ext_buffer_size) {
-
-    size_t offset = 0;
-
-    const char* space_substr = strnstr(ext_string + offset, " ", ext_buffer_size - offset);
-
-    size_t space_pos = space_substr ? space_substr - ext_string : 0;
-
-    while (space_pos < ext_buffer_size) {
-
-        if( strncmp(support_str, ext_string + offset, space_pos) == 0 ) {
-            // Device supports requested extension!
-            printf("Info: Found extension support ‘%s’!\n", support_str);
-            return 1;
-        }
-
-        // Keep searching -- skip to next token string
-        offset = space_pos + 1;
-        space_substr = strnstr(ext_string + offset, " ", ext_buffer_size - offset);
-        space_pos = space_substr ? space_substr - ext_string : 0;
-    }
-
-	std::cout << "Warning: Extension not supported " << support_str << std::endl;
-    return 0;
-}
-#endif
-
-inline int test_for_gl_cl_sharing() {
-
-
-    int err = 0;
-
-#if defined (__APPLE__) || defined(MACOSX)
-	static const char *CL_GL_SHARING_EXT = "cl_APPLE_gl_sharing";
-#else
-	static const char* CL_GL_SHARING_EXT = "cl_khr_gl_sharing";
-#endif
-
-    cl_uint num_devices;
-    clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, 0, NULL, &num_devices);
-
-    cl_device_id *devices = (cl_device_id *) calloc(sizeof(cl_device_id), num_devices);
-    clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, num_devices, devices, NULL);
-
-    // Get string containing supported device extensions
-    size_t ext_size = 1024;
-    char *ext_string = (char *) malloc(ext_size);
-    err = clGetDeviceInfo(devices[0], CL_DEVICE_EXTENSIONS, ext_size, ext_string, &ext_size);
-
-    free(devices);
-
-    // Search for GL support in extension string (space delimited)
-    //int supported = IsExtensionSupported(CL_GL_SHARING_EXT, ext_string, ext_size);
-    int supported = 0;
-	if (supported) {
-        // Device supports context sharing with OpenGL
-        printf("Found GL Sharing Support!\n");
-        return 1;
-    }
-    return -1;
-}
-
-
-inline int query_platform_devices() {
-
-	int error = 0;
-	// Get the number of platforms
-	cl_uint platform_count = 0;
-	clGetPlatformIDs(0, nullptr, &platform_count);
-
-	// Fetch the platforms
-	std::vector<cl_platform_id> platformIds(platform_count);
-	clGetPlatformIDs(platform_count, platformIds.data(), nullptr);
-
-
-	for (unsigned int q = 0; q < platform_count; q++) {
-
-		// From stackoverflow, gets and lists the compute devices
-		cl_uint num_devices, i;
-		error = clGetDeviceIDs(platformIds[q], CL_DEVICE_TYPE_ALL, 0, NULL, &num_devices);
-
-		cl_device_id *devices = (cl_device_id *)calloc(sizeof(cl_device_id), num_devices);
-		error = clGetDeviceIDs(platformIds[q], CL_DEVICE_TYPE_ALL, num_devices, devices, NULL);
-
-		char buf[128];
-		for (i = 0; i < num_devices; i++) {
-			clGetDeviceInfo(devices[i], CL_DEVICE_NAME, 128, buf, NULL);
-			fprintf(stdout, "Device %s supports ", buf);
-
-			clGetDeviceInfo(devices[i], CL_DEVICE_VERSION, 128, buf, NULL);
-			fprintf(stdout, "%s\n", buf);
-
-
-			//cl_device_type a;
-			//clGetDeviceInfo(devices[i], CL_DEVICE_TYPE, 128, &a, NULL);
-			//std::cout << a << std::endl;
-
-			//cl_uint b;
-			//clGetDeviceInfo(devices[i], CL_DEVICE_MAX_CLOCK_FREQUENCY, 128, &b, NULL);
-			//std::cout << b << std::endl;
-
-			//cl_uint c;
-			//clGetDeviceInfo(devices[i], CL_DEVICE_MAX_COMPUTE_UNITS, 128, &c, NULL);
-			//std::cout << c << std::endl;
-			
-			std::cout << devices[i] << std::endl;
-		}
-
-		free(devices);
-	}
-
-    return 1;
-}

src/main.cpp

@@ -25,7 +25,6 @@
 #include <OpenCL/cl_ext.h>
 
 #endif
-#include "TestPlatform.cpp"
 #include "Map.h"
 #include "Curses.h"
 #include "util.hpp"
@@ -65,21 +64,14 @@ sf::Texture window_texture;
 
 int main() {
 
+	CL_Wrapper c;
 
-
+	//Map m(sf::Vector3i (50, 50, 50));
-	Map m(sf::Vector3i (50, 50, 50));
+	//m.generate_octree();
-	m.generate_octree();
 	return 1;
 
 	//sf::RenderWindow window(sf::VideoMode(WINDOW_X, WINDOW_Y), "SFML");
 
-	//// Setup CL, instantiate and pass in values to the kernel
-	//CL_Wrapper c;
-	//query_platform_devices();
-	//c.acquire_platform_and_device();
-	//c.create_shared_context();
-	//c.create_command_queue();
-
 	//if (c.compile_kernel("../kernels/ray_caster_kernel.cl", true, "min_kern") < 0) {
 	//	std::cin.get();
 	//	return -1;