parent
964b70879f
commit
36f72f5cbe
@ -0,0 +1,112 @@
|
|||||||
|
#pragma once
|
||||||
|
|
||||||
|
#ifdef linux
|
||||||
|
#include <CL/cl.h>
|
||||||
|
#include <CL/opencl.h>
|
||||||
|
|
||||||
|
#elif defined _WIN32
|
||||||
|
#define CL_USE_DEPRECATED_OPENCL_1_2_APIS
|
||||||
|
#include <CL/cl_gl.h>
|
||||||
|
#include <CL/cl.h>
|
||||||
|
#include <CL/opencl.h>
|
||||||
|
|
||||||
|
// Note: windows.h must be included before Gl/GL.h
|
||||||
|
#include <windows.h>
|
||||||
|
#include <GL/GL.h>
|
||||||
|
|
||||||
|
#elif defined TARGET_OS_MAC
|
||||||
|
#include <OpenCL/opencl.h>
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <string>
|
||||||
|
#include <SFML/Graphics.hpp>
|
||||||
|
#include <unordered_map>
|
||||||
|
#include <iostream>
|
||||||
|
|
||||||
|
struct device {
|
||||||
|
|
||||||
|
cl_device_id id;
|
||||||
|
cl_device_type type;
|
||||||
|
cl_uint clock_frequency;
|
||||||
|
char version[128];
|
||||||
|
cl_platform_id platform;
|
||||||
|
cl_uint comp_units;
|
||||||
|
char extensions[1024];
|
||||||
|
char name[256];
|
||||||
|
cl_bool is_little_endian = false;
|
||||||
|
bool cl_gl_sharing = false;
|
||||||
|
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
class OpenCL {
|
||||||
|
|
||||||
|
public:
|
||||||
|
|
||||||
|
OpenCL(sf::Vector2i resolution);
|
||||||
|
~OpenCL();
|
||||||
|
|
||||||
|
bool init();
|
||||||
|
|
||||||
|
void run_kernel(std::string kernel_name);
|
||||||
|
|
||||||
|
void draw(sf::RenderWindow *window);
|
||||||
|
|
||||||
|
private:
|
||||||
|
|
||||||
|
int error = 0;
|
||||||
|
|
||||||
|
// Sprite and texture that is shared between CL and GL
|
||||||
|
sf::Sprite viewport_sprite;
|
||||||
|
sf::Texture viewport_texture;
|
||||||
|
sf::Vector2i viewport_resolution;
|
||||||
|
|
||||||
|
// The device which we have selected according to certain criteria
|
||||||
|
cl_platform_id platform_id;
|
||||||
|
cl_device_id device_id;
|
||||||
|
|
||||||
|
// The GL shared context and its subsiquently generated command queue
|
||||||
|
cl_context context;
|
||||||
|
cl_command_queue command_queue;
|
||||||
|
|
||||||
|
// Maps which contain a mapping from "name" to the host side CL memory object
|
||||||
|
std::unordered_map<std::string, cl_kernel> kernel_map;
|
||||||
|
std::unordered_map<std::string, cl_mem> buffer_map;
|
||||||
|
|
||||||
|
// Query the hardware on this machine and select the best device and the platform on which it resides
|
||||||
|
void aquire_hardware();
|
||||||
|
|
||||||
|
// After aquiring hardware, create a shared context using platform specific CL commands
|
||||||
|
void create_shared_context();
|
||||||
|
|
||||||
|
// Command queues must be created with a valid context
|
||||||
|
void create_command_queue();
|
||||||
|
|
||||||
|
// Compile the kernel and store it in the kernel map with the name as the key
|
||||||
|
bool compile_kernel(std::string kernel_path, std::string kernel_name);
|
||||||
|
|
||||||
|
// Buffer operations
|
||||||
|
// All of these functions create and store a buffer in a map with the key representing their name
|
||||||
|
|
||||||
|
// Create an image buffer from an SF texture. Access Type is the read/write specifier required by OpenCL
|
||||||
|
int create_image_buffer(std::string buffer_name, cl_uint size, sf::Texture* texture, cl_int access_type);
|
||||||
|
|
||||||
|
// Create a buffer with CL_MEM_READ_ONLY and CL_MEM_COPY_HOST_PTR
|
||||||
|
int create_buffer(std::string buffer_name, cl_uint size, void* data);
|
||||||
|
|
||||||
|
// Create a buffer with user defined data access flags
|
||||||
|
int create_buffer(std::string buffer_name, cl_uint size, void* data, cl_mem_flags flags);
|
||||||
|
|
||||||
|
// Store a cl_mem object in the buffer map <string:name, cl_mem:buffer>
|
||||||
|
int store_buffer(cl_mem buffer, std::string buffer_name);
|
||||||
|
|
||||||
|
// Using CL release the memory object and remove the KVP associated with the buffer name
|
||||||
|
int release_buffer(std::string buffer_name);
|
||||||
|
|
||||||
|
void assign_kernel_args();
|
||||||
|
int set_kernel_arg(std::string kernel_name, int index, std::string buffer_name);
|
||||||
|
|
||||||
|
bool vr_assert(int error_code, std::string function_name);
|
||||||
|
|
||||||
|
};
|
@ -0,0 +1,39 @@
|
|||||||
|
|
||||||
|
float scale(float valueIn, float origMin, float origMax, float scaledMin, float scaledMax) {
|
||||||
|
return ((scaledMax - scaledMin) * (valueIn - origMin) / (origMax - origMin)) + scaledMin;
|
||||||
|
}
|
||||||
|
|
||||||
|
__kernel void mandlebrot (
|
||||||
|
global int2* image_res,
|
||||||
|
__write_only image2d_t image,
|
||||||
|
global float4* range
|
||||||
|
){
|
||||||
|
|
||||||
|
size_t x_pixel = get_global_id(0);
|
||||||
|
size_t y_pixel = get_global_id(1);
|
||||||
|
|
||||||
|
int2 pixel = (int2)(x_pixel, y_pixel);
|
||||||
|
|
||||||
|
float x0 = scale(x_pixel, 0, (*image_res).x, (*range).x, (*range).y);
|
||||||
|
float y0 = scale(y_pixel, 0, (*image_res).y, (*range).z, (*range).w);
|
||||||
|
|
||||||
|
float x = 0.0;
|
||||||
|
float y = 0.0;
|
||||||
|
|
||||||
|
int iteration_count = 0;
|
||||||
|
int interation_threshold = 1000;
|
||||||
|
|
||||||
|
while (x*x + y*y < 4 && iteration_count < interation_threshold) {
|
||||||
|
float x_temp = x*x - y*y + x0;
|
||||||
|
y = 2 * x * y + y0;
|
||||||
|
x = x_temp;
|
||||||
|
iteration_count++;
|
||||||
|
}
|
||||||
|
|
||||||
|
int val = scale(iteration_count, 0, 1000, 0, 16777216);
|
||||||
|
|
||||||
|
write_imagef(image, pixel, (float4)(val & 0xff, (val >> 8) & 0xff, (val >> 16) & 0xff, 200));
|
||||||
|
|
||||||
|
return;
|
||||||
|
|
||||||
|
}
|
@ -0,0 +1,669 @@
|
|||||||
|
#include <OpenCL.h>
|
||||||
|
#include "util.hpp"
|
||||||
|
|
||||||
|
|
||||||
|
void OpenCL::run_kernel(std::string kernel_name) {
|
||||||
|
|
||||||
|
size_t global_work_size[2] = { static_cast<size_t>(viewport_resolution.x), static_cast<size_t>(viewport_resolution.y) };
|
||||||
|
|
||||||
|
cl_kernel kernel = kernel_map.at(kernel_name);
|
||||||
|
|
||||||
|
error = clEnqueueAcquireGLObjects(command_queue, 1, &buffer_map.at("viewport_image"), 0, 0, 0);
|
||||||
|
if (vr_assert(error, "clEnqueueAcquireGLObjects"))
|
||||||
|
return;
|
||||||
|
|
||||||
|
//error = clEnqueueTask(command_queue, kernel, 0, NULL, NULL);
|
||||||
|
error = clEnqueueNDRangeKernel(
|
||||||
|
command_queue, kernel,
|
||||||
|
2, NULL, global_work_size,
|
||||||
|
NULL, 0, NULL, NULL);
|
||||||
|
|
||||||
|
if (vr_assert(error, "clEnqueueNDRangeKernel"))
|
||||||
|
return;
|
||||||
|
|
||||||
|
clFinish(command_queue);
|
||||||
|
|
||||||
|
// What if errors out and gl objects are never released?
|
||||||
|
error = clEnqueueReleaseGLObjects(command_queue, 1, &buffer_map.at("viewport_image"), 0, NULL, NULL);
|
||||||
|
if (vr_assert(error, "clEnqueueReleaseGLObjects"))
|
||||||
|
return;
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
void OpenCL::draw(sf::RenderWindow *window) {
|
||||||
|
|
||||||
|
window->draw(viewport_sprite);
|
||||||
|
}
|
||||||
|
|
||||||
|
void OpenCL::aquire_hardware() {
|
||||||
|
// Get the number of platforms
|
||||||
|
cl_uint plt_cnt = 0;
|
||||||
|
clGetPlatformIDs(0, nullptr, &plt_cnt);
|
||||||
|
|
||||||
|
// Fetch the platforms
|
||||||
|
std::map<cl_platform_id, std::vector<device>> plt_ids;
|
||||||
|
|
||||||
|
// buffer before map init
|
||||||
|
std::vector<cl_platform_id> plt_buf(plt_cnt);
|
||||||
|
clGetPlatformIDs(plt_cnt, plt_buf.data(), nullptr);
|
||||||
|
|
||||||
|
// Map init
|
||||||
|
for (auto id : plt_buf) {
|
||||||
|
plt_ids.emplace(std::make_pair(id, std::vector<device>()));
|
||||||
|
}
|
||||||
|
|
||||||
|
// For each platform, populate its devices
|
||||||
|
for (unsigned int i = 0; i < plt_cnt; i++) {
|
||||||
|
|
||||||
|
cl_uint deviceIdCount = 0;
|
||||||
|
error = clGetDeviceIDs(plt_buf[i], CL_DEVICE_TYPE_ALL, 0, nullptr, &deviceIdCount);
|
||||||
|
|
||||||
|
// Check to see if we even have OpenCL on this machine
|
||||||
|
if (deviceIdCount == 0) {
|
||||||
|
std::cout << "There appears to be no devices, or none at least supporting OpenCL" << std::endl;
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Get the device ids
|
||||||
|
std::vector<cl_device_id> deviceIds(deviceIdCount);
|
||||||
|
error = clGetDeviceIDs(plt_buf[i], CL_DEVICE_TYPE_ALL, deviceIdCount, deviceIds.data(), NULL);
|
||||||
|
|
||||||
|
if (vr_assert(error, "clGetDeviceIDs"))
|
||||||
|
return;
|
||||||
|
|
||||||
|
for (unsigned int q = 0; q < deviceIdCount; q++) {
|
||||||
|
|
||||||
|
device d;
|
||||||
|
|
||||||
|
d.id = deviceIds[q];
|
||||||
|
|
||||||
|
clGetDeviceInfo(d.id, CL_DEVICE_PLATFORM, sizeof(cl_platform_id), &d.platform, NULL);
|
||||||
|
clGetDeviceInfo(d.id, CL_DEVICE_VERSION, sizeof(char) * 128, &d.version, NULL);
|
||||||
|
clGetDeviceInfo(d.id, CL_DEVICE_TYPE, sizeof(cl_device_type), &d.type, NULL);
|
||||||
|
clGetDeviceInfo(d.id, CL_DEVICE_MAX_CLOCK_FREQUENCY, sizeof(cl_uint), &d.clock_frequency, NULL);
|
||||||
|
clGetDeviceInfo(d.id, CL_DEVICE_MAX_COMPUTE_UNITS, sizeof(cl_uint), &d.comp_units, NULL);
|
||||||
|
clGetDeviceInfo(d.id, CL_DEVICE_EXTENSIONS, 1024, &d.extensions, NULL);
|
||||||
|
clGetDeviceInfo(d.id, CL_DEVICE_NAME, 256, &d.name, NULL);
|
||||||
|
clGetDeviceInfo(d.id, CL_DEVICE_ENDIAN_LITTLE, sizeof(cl_bool), &d.is_little_endian, NULL);
|
||||||
|
|
||||||
|
std::cout << "Device: " << q << std::endl;
|
||||||
|
std::cout << "Device Name : " << d.name << std::endl;
|
||||||
|
|
||||||
|
std::cout << "Platform ID : " << d.platform << std::endl;
|
||||||
|
std::cout << "Device Version : " << d.version << std::endl;
|
||||||
|
|
||||||
|
std::cout << "Device Type : ";
|
||||||
|
if (d.type == CL_DEVICE_TYPE_CPU)
|
||||||
|
std::cout << "CPU" << std::endl;
|
||||||
|
|
||||||
|
else if (d.type == CL_DEVICE_TYPE_GPU)
|
||||||
|
std::cout << "GPU" << std::endl;
|
||||||
|
|
||||||
|
else if (d.type == CL_DEVICE_TYPE_ACCELERATOR)
|
||||||
|
std::cout << "Accelerator" << std::endl;
|
||||||
|
|
||||||
|
std::cout << "Max clock frequency : " << d.clock_frequency << std::endl;
|
||||||
|
std::cout << "Max compute units : " << d.comp_units << std::endl;
|
||||||
|
std::cout << "Is little endian : " << std::boolalpha << static_cast<bool>(d.is_little_endian) << std::endl;
|
||||||
|
|
||||||
|
std::cout << "cl_khr_gl_sharing supported: ";
|
||||||
|
if (std::string(d.extensions).find("cl_khr_gl_sharing") == std::string::npos &&
|
||||||
|
std::string(d.extensions).find("cl_APPLE_gl_sharing") == std::string::npos) {
|
||||||
|
std::cout << "False" << std::endl;
|
||||||
|
}
|
||||||
|
std::cout << "True" << std::endl;
|
||||||
|
d.cl_gl_sharing = true;
|
||||||
|
|
||||||
|
std::cout << "Extensions supported: " << std::endl;
|
||||||
|
std::cout << std::string(d.extensions) << std::endl;
|
||||||
|
|
||||||
|
std::cout << " ===================================================================================== " << std::endl;
|
||||||
|
|
||||||
|
plt_ids.at(d.platform).push_back(d);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// The devices how now been queried we want to shoot for a gpu with the fastest clock,
|
||||||
|
// falling back to the cpu with the fastest clock if we weren't able to find one
|
||||||
|
|
||||||
|
device current_best_device;
|
||||||
|
current_best_device.type = 0; // Set this to 0 so the first run always selects a new device
|
||||||
|
current_best_device.clock_frequency = 0;
|
||||||
|
current_best_device.comp_units = 0;
|
||||||
|
|
||||||
|
|
||||||
|
for (auto kvp : plt_ids) {
|
||||||
|
|
||||||
|
for (auto device : kvp.second) {
|
||||||
|
|
||||||
|
// Gonna just split this up into cases. There are so many devices I cant test with
|
||||||
|
// that opencl supports. I'm not going to waste my time making a generic implimentation
|
||||||
|
|
||||||
|
// Upon success of a condition, set the current best device values
|
||||||
|
|
||||||
|
//if (strcmp(device.version, "OpenCL 1.2 ") == 0 && strcmp(device.version, current_best_device.version) != 0) {
|
||||||
|
// current_best_device = device;
|
||||||
|
//}
|
||||||
|
|
||||||
|
// If the current device is not a GPU and we are comparing it to a GPU
|
||||||
|
if (device.type == CL_DEVICE_TYPE_GPU && current_best_device.type != CL_DEVICE_TYPE_GPU) {
|
||||||
|
current_best_device = device;
|
||||||
|
}
|
||||||
|
|
||||||
|
//if (device.type == CL_DEVICE_TYPE_CPU &&
|
||||||
|
// current_best_device.type != CL_DEVICE_TYPE_CPU) {
|
||||||
|
// current_best_device = device;
|
||||||
|
//}
|
||||||
|
|
||||||
|
// Get the unit with the higher compute units
|
||||||
|
if (device.comp_units > current_best_device.comp_units) {
|
||||||
|
current_best_device = device;
|
||||||
|
}
|
||||||
|
|
||||||
|
// If we are comparing CPU to CPU get the one with the best clock
|
||||||
|
if (current_best_device.type != CL_DEVICE_TYPE_GPU && device.clock_frequency > current_best_device.clock_frequency) {
|
||||||
|
current_best_device = device;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (current_best_device.cl_gl_sharing == false && device.cl_gl_sharing == true) {
|
||||||
|
current_best_device = device;
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
platform_id = current_best_device.platform;
|
||||||
|
device_id = current_best_device.id;
|
||||||
|
|
||||||
|
std::cout << std::endl;
|
||||||
|
std::cout << "Selected Platform : " << platform_id << std::endl;
|
||||||
|
std::cout << "Selected Device : " << device_id << std::endl;
|
||||||
|
std::cout << "Selected Name : " << current_best_device.name << std::endl;
|
||||||
|
std::cout << "Selected Version : " << current_best_device.version << std::endl;
|
||||||
|
|
||||||
|
if (current_best_device.cl_gl_sharing == false) {
|
||||||
|
std::cout << "This device does not support the cl_khr_gl_sharing extension" << std::endl;
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
void OpenCL::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_id,
|
||||||
|
0
|
||||||
|
};
|
||||||
|
|
||||||
|
#elif defined _WIN32
|
||||||
|
|
||||||
|
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
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
#elif defined TARGET_OS_MAC
|
||||||
|
|
||||||
|
CGLContextObj glContext = CGLGetCurrentContext();
|
||||||
|
CGLShareGroupObj shareGroup = CGLGetShareGroup(glContext);
|
||||||
|
cl_context_properties context_properties[] = {
|
||||||
|
CL_CONTEXT_PROPERTY_USE_CGL_SHAREGROUP_APPLE,
|
||||||
|
(cl_context_properties)shareGroup,
|
||||||
|
0
|
||||||
|
};
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// Create our shared context
|
||||||
|
context = clCreateContext(
|
||||||
|
context_properties,
|
||||||
|
1,
|
||||||
|
&device_id,
|
||||||
|
nullptr, nullptr,
|
||||||
|
&error
|
||||||
|
);
|
||||||
|
|
||||||
|
if (vr_assert(error, "clCreateContext"))
|
||||||
|
return;
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
void OpenCL::create_command_queue() {
|
||||||
|
|
||||||
|
// If context and device_id have initialized
|
||||||
|
if (context && device_id) {
|
||||||
|
|
||||||
|
command_queue = clCreateCommandQueue(context, device_id, 0, &error);
|
||||||
|
|
||||||
|
if (vr_assert(error, "clCreateCommandQueue"))
|
||||||
|
return;
|
||||||
|
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
std::cout << "Failed creating the command queue. Context or device_id not initialized";
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
bool OpenCL::compile_kernel(std::string kernel_path, std::string kernel_name) {
|
||||||
|
|
||||||
|
const char* source;
|
||||||
|
std::string tmp;
|
||||||
|
|
||||||
|
//Load in the kernel, and c stringify it
|
||||||
|
tmp = read_file(kernel_path);
|
||||||
|
source = tmp.c_str();
|
||||||
|
|
||||||
|
|
||||||
|
size_t kernel_source_size = strlen(source);
|
||||||
|
|
||||||
|
// Load the source into CL's data structure
|
||||||
|
|
||||||
|
cl_program program = clCreateProgramWithSource(
|
||||||
|
context, 1,
|
||||||
|
&source,
|
||||||
|
&kernel_source_size, &error
|
||||||
|
);
|
||||||
|
|
||||||
|
// This is not for compilation, it only loads the source
|
||||||
|
if (vr_assert(error, "clCreateProgramWithSource"))
|
||||||
|
return false;
|
||||||
|
|
||||||
|
|
||||||
|
// Try and build the program
|
||||||
|
// "-cl-finite-math-only -cl-fast-relaxed-math -cl-unsafe-math-optimizations"
|
||||||
|
error = clBuildProgram(program, 1, &device_id, "-cl-finite-math-only -cl-fast-relaxed-math -cl-unsafe-math-optimizations", NULL, NULL);
|
||||||
|
|
||||||
|
// Check to see if it errored out
|
||||||
|
if (vr_assert(error, "clBuildProgram")) {
|
||||||
|
|
||||||
|
// Get the size of the queued log
|
||||||
|
size_t log_size;
|
||||||
|
clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_LOG, 0, NULL, &log_size);
|
||||||
|
char *log = new char[log_size];
|
||||||
|
|
||||||
|
// Grab the log
|
||||||
|
clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_LOG, log_size, log, NULL);
|
||||||
|
|
||||||
|
std::cout << log;
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Done initializing the kernel
|
||||||
|
cl_kernel kernel = clCreateKernel(program, kernel_name.c_str(), &error);
|
||||||
|
|
||||||
|
if (vr_assert(error, "clCreateKernel"))
|
||||||
|
return false;
|
||||||
|
|
||||||
|
// Do I want these to overlap when repeated??
|
||||||
|
kernel_map[kernel_name] = kernel;
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
int OpenCL::create_image_buffer(std::string buffer_name, cl_uint size, sf::Texture* texture, cl_int access_type) {
|
||||||
|
|
||||||
|
if (buffer_map.count(buffer_name) > 0) {
|
||||||
|
release_buffer(buffer_name);
|
||||||
|
}
|
||||||
|
|
||||||
|
int error;
|
||||||
|
cl_mem buff = clCreateFromGLTexture(
|
||||||
|
context, access_type, GL_TEXTURE_2D,
|
||||||
|
0, texture->getNativeHandle(), &error);
|
||||||
|
|
||||||
|
if (vr_assert(error, "clCreateFromGLTexture"))
|
||||||
|
return 1;
|
||||||
|
|
||||||
|
store_buffer(buff, buffer_name);
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
int OpenCL::create_buffer(std::string buffer_name, cl_uint size, void* data) {
|
||||||
|
|
||||||
|
if (buffer_map.count(buffer_name) > 0) {
|
||||||
|
release_buffer(buffer_name);
|
||||||
|
}
|
||||||
|
|
||||||
|
cl_mem buff = clCreateBuffer(
|
||||||
|
context, CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
|
||||||
|
size, data, &error
|
||||||
|
);
|
||||||
|
|
||||||
|
if (vr_assert(error, "clCreateBuffer"))
|
||||||
|
return -1;
|
||||||
|
|
||||||
|
store_buffer(buff, buffer_name);
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
int OpenCL::create_buffer(std::string buffer_name, cl_uint size, void* data, cl_mem_flags flags) {
|
||||||
|
|
||||||
|
if (buffer_map.count(buffer_name) > 0) {
|
||||||
|
release_buffer(buffer_name);
|
||||||
|
}
|
||||||
|
|
||||||
|
cl_mem buff = clCreateBuffer(
|
||||||
|
context, flags,
|
||||||
|
size, data, &error
|
||||||
|
);
|
||||||
|
|
||||||
|
if (vr_assert(error, "clCreateBuffer"))
|
||||||
|
return -1;
|
||||||
|
|
||||||
|
store_buffer(buff, buffer_name);
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
int OpenCL::store_buffer(cl_mem buffer, std::string buffer_name) {
|
||||||
|
|
||||||
|
if (buffer_map.count(buffer_name)) {
|
||||||
|
clReleaseMemObject(buffer_map[buffer_name]);
|
||||||
|
}
|
||||||
|
|
||||||
|
buffer_map[buffer_name] = buffer;
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
int OpenCL::release_buffer(std::string buffer_name) {
|
||||||
|
|
||||||
|
if (buffer_map.count(buffer_name) > 0) {
|
||||||
|
|
||||||
|
int error = clReleaseMemObject(buffer_map.at(buffer_name));
|
||||||
|
|
||||||
|
if (vr_assert(error, "clReleaseMemObject")) {
|
||||||
|
std::cout << "Error releasing buffer : " << buffer_name;
|
||||||
|
std::cout << "Buffer not removed";
|
||||||
|
return -1;
|
||||||
|
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
buffer_map.erase(buffer_name);
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
std::cout << "Error releasing buffer : " << buffer_name;
|
||||||
|
std::cout << "Buffer not found";
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
void OpenCL::assign_kernel_args() {
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
int OpenCL::set_kernel_arg(std::string kernel_name, int index, std::string buffer_name) {
|
||||||
|
|
||||||
|
error = clSetKernelArg(
|
||||||
|
kernel_map.at(kernel_name),
|
||||||
|
index,
|
||||||
|
sizeof(cl_mem),
|
||||||
|
(void *)&buffer_map.at(buffer_name));
|
||||||
|
|
||||||
|
if (vr_assert(error, "clSetKernelArg")) {
|
||||||
|
std::cout << buffer_name << std::endl;
|
||||||
|
std::cout << buffer_map.at(buffer_name) << std::endl;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
OpenCL::OpenCL(sf::Vector2i resolution) : viewport_resolution(resolution){
|
||||||
|
|
||||||
|
viewport_texture.create(viewport_resolution.x, viewport_resolution.y);
|
||||||
|
viewport_sprite.setTexture(viewport_texture);
|
||||||
|
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
OpenCL::~OpenCL() {
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
bool OpenCL::init() {
|
||||||
|
|
||||||
|
// Initialize opencl up to the point where we start assigning buffers
|
||||||
|
aquire_hardware();
|
||||||
|
|
||||||
|
create_shared_context();
|
||||||
|
|
||||||
|
create_command_queue();
|
||||||
|
|
||||||
|
while (!compile_kernel("../kernels/mandlebrot.cl", "mandlebrot")) {
|
||||||
|
std::cin.get();
|
||||||
|
}
|
||||||
|
|
||||||
|
create_image_buffer("viewport_image", viewport_texture.getSize().x * viewport_texture.getSize().x * 4 * sizeof(float), &viewport_texture, CL_MEM_WRITE_ONLY);
|
||||||
|
create_buffer("image_res", sizeof(sf::Vector2i), &viewport_resolution);
|
||||||
|
|
||||||
|
sf::Vector4i range(-1.0f, 1.0f, -1.0f, 1.0f);
|
||||||
|
create_buffer("range", sizeof(sf::Vector4i), &range);
|
||||||
|
|
||||||
|
set_kernel_arg("mandlebrot", 0, "image_res");
|
||||||
|
set_kernel_arg("mandlebrot", 1, "viewport_image");
|
||||||
|
set_kernel_arg("mandlebrot", 2, "range");
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
bool OpenCL::vr_assert(int error_code, std::string function_name) {
|
||||||
|
|
||||||
|
// Just gonna do a little jump table here, just error codes so who cares
|
||||||
|
std::string err_msg = "Error : ";
|
||||||
|
|
||||||
|
switch (error_code) {
|
||||||
|
|
||||||
|
case CL_SUCCESS:
|
||||||
|
return false;
|
||||||
|
|
||||||
|
case 1:
|
||||||
|
return false;
|
||||||
|
|
||||||
|
case CL_DEVICE_NOT_FOUND:
|
||||||
|
err_msg += "CL_DEVICE_NOT_FOUND";
|
||||||
|
break;
|
||||||
|
case CL_DEVICE_NOT_AVAILABLE:
|
||||||
|
err_msg = "CL_DEVICE_NOT_AVAILABLE";
|
||||||
|
break;
|
||||||
|
case CL_COMPILER_NOT_AVAILABLE:
|
||||||
|
err_msg = "CL_COMPILER_NOT_AVAILABLE";
|
||||||
|
break;
|
||||||
|
case CL_MEM_OBJECT_ALLOCATION_FAILURE:
|
||||||
|
err_msg = "CL_MEM_OBJECT_ALLOCATION_FAILURE";
|
||||||
|
break;
|
||||||
|
case CL_OUT_OF_RESOURCES:
|
||||||
|
err_msg = "CL_OUT_OF_RESOURCES";
|
||||||
|
break;
|
||||||
|
case CL_OUT_OF_HOST_MEMORY:
|
||||||
|
err_msg = "CL_OUT_OF_HOST_MEMORY";
|
||||||
|
break;
|
||||||
|
case CL_PROFILING_INFO_NOT_AVAILABLE:
|
||||||
|
err_msg = "CL_PROFILING_INFO_NOT_AVAILABLE";
|
||||||
|
break;
|
||||||
|
case CL_MEM_COPY_OVERLAP:
|
||||||
|
err_msg = "CL_MEM_COPY_OVERLAP";
|
||||||
|
break;
|
||||||
|
case CL_IMAGE_FORMAT_MISMATCH:
|
||||||
|
err_msg = "CL_IMAGE_FORMAT_MISMATCH";
|
||||||
|
break;
|
||||||
|
case CL_IMAGE_FORMAT_NOT_SUPPORTED:
|
||||||
|
err_msg = "CL_IMAGE_FORMAT_NOT_SUPPORTED";
|
||||||
|
break;
|
||||||
|
case CL_BUILD_PROGRAM_FAILURE:
|
||||||
|
err_msg = "CL_BUILD_PROGRAM_FAILURE";
|
||||||
|
break;
|
||||||
|
case CL_MAP_FAILURE:
|
||||||
|
err_msg = "CL_MAP_FAILURE";
|
||||||
|
break;
|
||||||
|
case CL_MISALIGNED_SUB_BUFFER_OFFSET:
|
||||||
|
err_msg = "CL_MISALIGNED_SUB_BUFFER_OFFSET";
|
||||||
|
break;
|
||||||
|
case CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST:
|
||||||
|
err_msg = "CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST";
|
||||||
|
break;
|
||||||
|
case CL_COMPILE_PROGRAM_FAILURE:
|
||||||
|
err_msg = "CL_COMPILE_PROGRAM_FAILURE";
|
||||||
|
break;
|
||||||
|
case CL_LINKER_NOT_AVAILABLE:
|
||||||
|
err_msg = "CL_LINKER_NOT_AVAILABLE";
|
||||||
|
break;
|
||||||
|
case CL_LINK_PROGRAM_FAILURE:
|
||||||
|
err_msg = "CL_LINK_PROGRAM_FAILURE";
|
||||||
|
break;
|
||||||
|
case CL_DEVICE_PARTITION_FAILED:
|
||||||
|
err_msg = "CL_DEVICE_PARTITION_FAILED";
|
||||||
|
break;
|
||||||
|
case CL_KERNEL_ARG_INFO_NOT_AVAILABLE:
|
||||||
|
err_msg = "CL_KERNEL_ARG_INFO_NOT_AVAILABLE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_VALUE:
|
||||||
|
err_msg = "CL_INVALID_VALUE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_DEVICE_TYPE:
|
||||||
|
err_msg = "CL_INVALID_DEVICE_TYPE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_PLATFORM:
|
||||||
|
err_msg = "CL_INVALID_PLATFORM";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_DEVICE:
|
||||||
|
err_msg = "CL_INVALID_DEVICE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_CONTEXT:
|
||||||
|
err_msg = "CL_INVALID_CONTEXT";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_QUEUE_PROPERTIES:
|
||||||
|
err_msg = "CL_INVALID_QUEUE_PROPERTIES";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_COMMAND_QUEUE:
|
||||||
|
err_msg = "CL_INVALID_COMMAND_QUEUE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_HOST_PTR:
|
||||||
|
err_msg = "CL_INVALID_HOST_PTR";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_MEM_OBJECT:
|
||||||
|
err_msg = "CL_INVALID_MEM_OBJECT";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_IMAGE_FORMAT_DESCRIPTOR:
|
||||||
|
err_msg = "CL_INVALID_IMAGE_FORMAT_DESCRIPTOR";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_IMAGE_SIZE:
|
||||||
|
err_msg = "CL_INVALID_IMAGE_SIZE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_SAMPLER:
|
||||||
|
err_msg = "CL_INVALID_SAMPLER";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_BINARY:
|
||||||
|
err_msg = "CL_INVALID_BINARY";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_BUILD_OPTIONS:
|
||||||
|
err_msg = "CL_INVALID_BUILD_OPTIONS";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_PROGRAM:
|
||||||
|
err_msg = "CL_INVALID_PROGRAM";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_PROGRAM_EXECUTABLE:
|
||||||
|
err_msg = "CL_INVALID_PROGRAM_EXECUTABLE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_KERNEL_NAME:
|
||||||
|
err_msg = "CL_INVALID_KERNEL_NAME";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_KERNEL_DEFINITION:
|
||||||
|
err_msg = "CL_INVALID_KERNEL_DEFINITION";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_KERNEL:
|
||||||
|
err_msg = "CL_INVALID_KERNEL";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_ARG_INDEX:
|
||||||
|
err_msg = "CL_INVALID_ARG_INDEX";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_ARG_VALUE:
|
||||||
|
err_msg = "CL_INVALID_ARG_VALUE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_ARG_SIZE:
|
||||||
|
err_msg = "CL_INVALID_ARG_SIZE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_KERNEL_ARGS:
|
||||||
|
err_msg = "CL_INVALID_KERNEL_ARGS";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_WORK_DIMENSION:
|
||||||
|
err_msg = "CL_INVALID_WORK_DIMENSION";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_WORK_GROUP_SIZE:
|
||||||
|
err_msg = "CL_INVALID_WORK_GROUP_SIZE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_WORK_ITEM_SIZE:
|
||||||
|
err_msg = "CL_INVALID_WORK_ITEM_SIZE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_GLOBAL_OFFSET:
|
||||||
|
err_msg = "CL_INVALID_GLOBAL_OFFSET";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_EVENT_WAIT_LIST:
|
||||||
|
err_msg = "CL_INVALID_EVENT_WAIT_LIST";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_EVENT:
|
||||||
|
err_msg = "CL_INVALID_EVENT";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_OPERATION:
|
||||||
|
err_msg = "CL_INVALID_OPERATION";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_GL_OBJECT:
|
||||||
|
err_msg = "CL_INVALID_GL_OBJECT";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_BUFFER_SIZE:
|
||||||
|
err_msg = "CL_INVALID_BUFFER_SIZE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_MIP_LEVEL:
|
||||||
|
err_msg = "CL_INVALID_MIP_LEVEL";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_GLOBAL_WORK_SIZE:
|
||||||
|
err_msg = "CL_INVALID_GLOBAL_WORK_SIZE";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_PROPERTY:
|
||||||
|
err_msg = "CL_INVALID_PROPERTY";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_IMAGE_DESCRIPTOR:
|
||||||
|
err_msg = "CL_INVALID_IMAGE_DESCRIPTOR";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_COMPILER_OPTIONS:
|
||||||
|
err_msg = "CL_INVALID_COMPILER_OPTIONS";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_LINKER_OPTIONS:
|
||||||
|
err_msg = "CL_INVALID_LINKER_OPTIONS";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_DEVICE_PARTITION_COUNT:
|
||||||
|
err_msg = "CL_INVALID_DEVICE_PARTITION_COUNT";
|
||||||
|
break;
|
||||||
|
case CL_INVALID_GL_SHAREGROUP_REFERENCE_KHR:
|
||||||
|
err_msg = "CL_INVALID_GL_SHAREGROUP_REFERENCE_KHR";
|
||||||
|
break;
|
||||||
|
case CL_PLATFORM_NOT_FOUND_KHR:
|
||||||
|
err_msg = "CL_PLATFORM_NOT_FOUND_KHR";
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
std::cout << err_msg << " =at= " << function_name << std::endl;
|
||||||
|
return true;
|
||||||
|
}
|
Loading…
Reference in new issue