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opencl example

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This commit is contained in:
Mario Hüttel 2019-06-05 00:09:56 +02:00
parent b89166e657
commit 173d18acec
4 changed files with 395 additions and 74 deletions
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18
CMakeLists.txt
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@ -1,22 +1,36 @@
project(mandelbrot) project(mandelbrot)
set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
cmake_minimum_required(VERSION 2.8) cmake_minimum_required(VERSION 2.8)
find_package(PkgConfig REQUIRED) find_package(PkgConfig REQUIRED)
pkg_search_module(GLIB REQUIRED glib-2.0) pkg_search_module(GLIB REQUIRED glib-2.0)
pkg_check_modules(GTK3 REQUIRED gtk+-3.0) pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
pkg_check_modules(CAIRO REQUIRED cairo) pkg_check_modules(CAIRO REQUIRED cairo)
find_package(OpenCL REQUIRED)
add_subdirectory(glade) add_subdirectory(glade)
include_directories(${GLIB_INCLUDE_DIRS} ${GTK3_INCLUDE_DIRS} ${CAIRO_INCLUDE_DIRS}) include_directories(${GLIB_INCLUDE_DIRS} ${GTK3_INCLUDE_DIRS} ${CAIRO_INCLUDE_DIRS} ${OPENCL_INCLUDE_DIRS})
link_directories(${GLIB_LINK_DIRS} ${GTK3_LINK_DIRS} ${CAIRO_LINK_DIRS}) link_directories(${GLIB_LINK_DIRS} ${GTK3_LINK_DIRS} ${CAIRO_LINK_DIRS})
add_definitions(${GLIB2_CFLAGS_OTHER}) add_definitions(${GLIB2_CFLAGS_OTHER})
configure_file("mandelbrot.cl" "cl_kernels/mandelbrot.cl" COPYONLY)
aux_source_directory("src" SOURCES) aux_source_directory("src" SOURCES)
add_compile_options(-Wall) add_compile_options(-Wall)
add_executable(${PROJECT_NAME} ${SOURCES} ${CMAKE_CURRENT_BINARY_DIR}/glade/resources.c) add_executable(${PROJECT_NAME} ${SOURCES} ${CMAKE_CURRENT_BINARY_DIR}/glade/resources.c)
add_dependencies(${PROJECT_NAME} glib-resources) add_dependencies(${PROJECT_NAME} glib-resources)
SET_SOURCE_FILES_PROPERTIES(${CMAKE_CURRENT_BINARY_DIR}/glade/resources.c PROPERTIES GENERATED 1) SET_SOURCE_FILES_PROPERTIES(${CMAKE_CURRENT_BINARY_DIR}/glade/resources.c PROPERTIES GENERATED 1)
target_link_libraries(${PROJECT_NAME} ${GLIB_LDFLAGS} ${GTK3_LDFLAGS} ${CAIRO_LDFLAGS} m pthread) target_link_libraries(${PROJECT_NAME} ${GLIB_LDFLAGS} ${GTK3_LDFLAGS} ${CAIRO_LDFLAGS} m pthread ${OPENCL_LIBRARIES})
install (TARGETS ${PROJECT_NAME} DESTINATION bin) install (TARGETS ${PROJECT_NAME} DESTINATION bin)
message(STATUS "OpenCL found: ${OPENCL_FOUND}")
message(STATUS "OpenCL includes: ${OPENCL_INCLUDE_DIRS}")
message(STATUS "OpenCL CXX includes: ${OPENCL_HAS_CPP_BINDINGS}")
message(STATUS "OpenCL libraries: ${OPENCL_LIBRARIES}")

171
cmake/FindOpenCL.cmake Normal file
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@ -0,0 +1,171 @@
# Find OpenCL
#
# To set manually the paths, define these environment variables:
# OpenCL_INCPATH - Include path (e.g. OpenCL_INCPATH=/opt/cuda/4.0/cuda/include)
# OpenCL_LIBPATH - Library path (e.h. OpenCL_LIBPATH=/usr/lib64/nvidia)
#
# Once done this will define
# OPENCL_FOUND - system has OpenCL
# OPENCL_INCLUDE_DIRS - the OpenCL include directory
# OPENCL_LIBRARIES - link these to use OpenCL
# OPENCL_HAS_CPP_BINDINGS - system has also cl.hpp
FIND_PACKAGE(PackageHandleStandardArgs)
SET (OPENCL_VERSION_STRING "0.1.0")
SET (OPENCL_VERSION_MAJOR 0)
SET (OPENCL_VERSION_MINOR 1)
SET (OPENCL_VERSION_PATCH 0)
IF (APPLE)
# IF OpenCL_LIBPATH is given use it and don't use default path
IF (DEFINED ENV{OpenCL_LIBPATH})
FIND_LIBRARY(OPENCL_LIBRARIES OpenCL PATHS ENV OpenCL_LIBPATH NO_DEFAULT_PATH)
ELSE ()
FIND_LIBRARY(OPENCL_LIBRARIES OpenCL DOC "OpenCL lib for OSX")
ENDIF ()
# IF OpenCL_INCPATH is given use it and find for CL/cl.h and OpenCL/cl.h do not try to find default paths
IF (DEFINED ENV{OpenCL_INCPATH})
FIND_PATH(OPENCL_INCLUDE_DIRS CL/cl.h OpenCL/cl.h PATHS ENV OpenCL_INCPATH NO_DEFAULT_PATH)
FIND_PATH(_OPENCL_CPP_INCLUDE_DIRS CL/cl.hpp OpenCL/cl.hpp PATHS ${OPENCL_INCLUDE_DIRS} NO_DEFAULT_PATH)
ELSE ()
FIND_PATH(OPENCL_INCLUDE_DIRS OpenCL/cl.h DOC "Include for OpenCL on OSX")
FIND_PATH(_OPENCL_CPP_INCLUDE_DIRS OpenCL/cl.hpp DOC "Include for OpenCL CPP bindings on OSX")
ENDIF ()
ELSE (APPLE)
IF (WIN32)
# Find OpenCL includes and libraries from environment variables provided by vendor
SET(OPENCL_INCLUDE_SEARCH_PATHS)
SET(OPENCL_LIBRARY_SEARCH_PATHS)
SET(OPENCL_LIBRARY_64_SEARCH_PATHS)
# Nvidia
IF (DEFINED ENV{CUDA_INC_PATH})
SET(OPENCL_INCLUDE_SEARCH_PATHS ${OPENCL_INCLUDE_SEARCH_PATHS} $ENV{CUDA_INC_PATH})
SET(OPENCL_LIBRARY_64_SEARCH_PATHS ${OPENCL_LIBRARY_64_SEARCH_PATHS} $ENV{CUDA_LIB_PATH}/../lib64)
SET(OPENCL_LIBRARY_SEARCH_PATHS ${OPENCL_LIBRARY_SEARCH_PATHS} $ENV{CUDA_LIB_PATH}/../lib)
ENDIF()
IF (DEFINED ENV{CUDA_PATH})
SET(OPENCL_INCLUDE_SEARCH_PATHS ${OPENCL_INCLUDE_SEARCH_PATHS} $ENV{CUDA_INC_PATH})
SET(OPENCL_LIBRARY_64_SEARCH_PATHS ${OPENCL_LIBRARY_64_SEARCH_PATHS} $ENV{CUDA_PATH}/lib/x64/)
SET(OPENCL_LIBRARY_SEARCH_PATHS ${OPENCL_LIBRARY_SEARCH_PATHS} $ENV{CUDA_PATH}/lib/Win32/)
ENDIF()
# Intel SDK
IF (DEFINED ENV{INTELOCSDKROOT})
SET(OPENCL_INCLUDE_SEARCH_PATHS ${OPENCL_INCLUDE_SEARCH_PATHS} $ENV{INTELOCSDKROOT}/include)
SET(OPENCL_LIBRARY_64_SEARCH_PATHS ${OPENCL_LIBRARY_64_SEARCH_PATHS} $ENV{INTELOCSDKROOT}/lib/x64)
SET(OPENCL_LIBRARY_SEARCH_PATHS ${OPENCL_LIBRARY_SEARCH_PATHS} $ENV{INTELOCSDKROOT}/lib/x86)
ENDIF()
# AMD SDK
IF (DEFINED ENV{AMDAPPSDKROOT})
SET(OPENCL_INCLUDE_SEARCH_PATHS ${OPENCL_INCLUDE_SEARCH_PATHS} $ENV{AMDAPPSDKROOT}/include)
SET(OPENCL_LIBRARY_64_SEARCH_PATHS ${OPENCL_LIBRARY_64_SEARCH_PATHS} $ENV{AMDAPPSDKROOT}/lib/x86_64)
SET(OPENCL_LIBRARY_SEARCH_PATHS ${OPENCL_LIBRARY_SEARCH_PATHS} $ENV{AMDAPPSDKROOT}/lib/x86)
ENDIF()
# Override search paths with OpenCL_INCPATH env variable
IF (DEFINED ENV{OpenCL_INCPATH})
SET(OPENCL_INCLUDE_SEARCH_PATHS $ENV{OpenCL_INCPATH})
ENDIF ()
# Override search paths with OpenCL_LIBPATH env variable
IF (DEFINED ENV{OpenCL_LIBPATH})
SET(OPENCL_LIBRARY_SEARCH_PATHS $ENV{OpenCL_LIBPATH})
SET(OPENCL_LIBRARY_64_SEARCH_PATHS $ENV{OpenCL_LIBPATH})
ENDIF ()
FIND_PATH(OPENCL_INCLUDE_DIRS CL/cl.h PATHS ${OPENCL_INCLUDE_SEARCH_PATHS})
FIND_PATH(_OPENCL_CPP_INCLUDE_DIRS CL/cl.hpp PATHS ${OPENCL_INCLUDE_SEARCH_PATHS})
FIND_LIBRARY(_OPENCL_32_LIBRARIES OpenCL.lib HINTS ${OPENCL_LIBRARY_SEARCH_PATHS} PATHS ${OPENCL_LIB_DIR} ENV PATH)
FIND_LIBRARY(_OPENCL_64_LIBRARIES OpenCL.lib HINTS ${OPENCL_LIBRARY_64_SEARCH_PATHS} PATHS ${OPENCL_LIB_DIR} ENV PATH)
# Check if 64bit or 32bit versions links fine
SET (_OPENCL_VERSION_SOURCE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/openclversion.c")
#SET (_OPENCL_VERSION_SOURCE "${CMAKE_BINARY_DIR}/test.c")
FILE (WRITE "${_OPENCL_VERSION_SOURCE}"
"
#if __APPLE__
#include <OpenCL/cl.h>
#else /* !__APPLE__ */
#include <CL/cl.h>
#endif /* __APPLE__ */
int main()
{
cl_int result;
cl_platform_id id;
result = clGetPlatformIDs(1, &id, NULL);
return result != CL_SUCCESS;
}
")
TRY_COMPILE(_OPENCL_64_COMPILE_SUCCESS ${CMAKE_BINARY_DIR} "${_OPENCL_VERSION_SOURCE}"
CMAKE_FLAGS
"-DINCLUDE_DIRECTORIES:STRING=${OPENCL_INCLUDE_DIRS}"
CMAKE_FLAGS
"-DLINK_LIBRARIES:STRING=${_OPENCL_64_LIBRARIES}"
)
IF(_OPENCL_64_COMPILE_SUCCESS)
message(STATUS "OpenCL 64bit lib found.")
SET(OPENCL_LIBRARIES ${_OPENCL_64_LIBRARIES})
ELSE()
TRY_COMPILE(_OPENCL_32_COMPILE_SUCCESS ${CMAKE_BINARY_DIR} "${_OPENCL_VERSION_SOURCE}"
CMAKE_FLAGS
"-DINCLUDE_DIRECTORIES:STRING=${OPENCL_INCLUDE_DIRS}"
CMAKE_FLAGS
"-DLINK_LIBRARIES:STRING=${_OPENCL_32_LIBRARIES}"
)
IF(_OPENCL_32_COMPILE_SUCCESS)
message(STATUS "OpenCL 32bit lib found.")
SET(OPENCL_LIBRARIES ${_OPENCL_32_LIBRARIES})
ELSE()
message(STATUS "Couldn't link opencl..")
ENDIF()
ENDIF()
ELSE (WIN32)
IF (CYGWIN)
SET (CMAKE_FIND_LIBRARY_SUFFIXES .lib)
SET (OCL_LIB_SUFFIX .lib)
ENDIF (CYGWIN)
# Unix style platforms
FIND_LIBRARY(OPENCL_LIBRARIES OpenCL${OCL_LIB_SUFFIX}
PATHS ENV LD_LIBRARY_PATH ENV OpenCL_LIBPATH
)
GET_FILENAME_COMPONENT(OPENCL_LIB_DIR ${OPENCL_LIBRARIES} PATH)
GET_FILENAME_COMPONENT(_OPENCL_INC_CAND ${OPENCL_LIB_DIR}/../../include ABSOLUTE)
# The AMD SDK currently does not place its headers
# in /usr/include, therefore also search relative
# to the library
FIND_PATH(OPENCL_INCLUDE_DIRS CL/cl.h PATHS ${_OPENCL_INC_CAND} "/usr/local/cuda/include" "/opt/AMDAPP/include" ENV OpenCL_INCPATH)
FIND_PATH(_OPENCL_CPP_INCLUDE_DIRS CL/cl.hpp PATHS ${_OPENCL_INC_CAND} "/usr/local/cuda/include" "/opt/AMDAPP/include" ENV OpenCL_INCPATH)
ENDIF (WIN32)
ENDIF (APPLE)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenCL DEFAULT_MSG OPENCL_LIBRARIES OPENCL_INCLUDE_DIRS)
IF(_OPENCL_CPP_INCLUDE_DIRS)
SET( OPENCL_HAS_CPP_BINDINGS TRUE )
LIST( APPEND OPENCL_INCLUDE_DIRS ${_OPENCL_CPP_INCLUDE_DIRS} )
# This is often the same, so clean up
LIST( REMOVE_DUPLICATES OPENCL_INCLUDE_DIRS )
ENDIF(_OPENCL_CPP_INCLUDE_DIRS)
MARK_AS_ADVANCED(
OPENCL_INCLUDE_DIRS
)

34
mandelbrot.cl Normal file
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@ -0,0 +1,34 @@
__kernel void mandelbrot(__global unsigned int *out_buff, unsigned int iter, double cx, double cy, double xs, double ys, unsigned int width, unsigned int height)
{
const int idx = get_global_id(0);
unsigned int i;
double z_real, z_imag;
double z2_real, z2_imag;
double pt_real, pt_imag;
const unsigned int pix_x = idx % width;
const unsigned int pix_y = (unsigned int)idx / width;
const double val_per_x_pixel = xs / (width - 1);
const double val_per_y_pixel = ys / (height - 1);
pt_real = (((double)pix_x - (double)(width - 1) / 2)) * val_per_x_pixel + cx;
pt_imag = (((double)pix_y - (double)(height - 1) / 2)) * val_per_y_pixel + cy;
z_real = 0.0;
z_imag = 0.0;
for (i = 0; i < iter; i++) {
z2_real = z_real * z_real - z_imag * z_imag;
z2_imag = 2.0 * z_real * z_imag;
z_real = z2_real + pt_real;
z_imag = z2_imag + pt_imag;
if ((z_real * z_real + z_imag * z_imag) >= 4.0)
break;
}
out_buff[idx] = i;
}

246
src/main.c
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@ -1,17 +1,19 @@
#include <stdio.h> #include <stdio.h>
#include <gtk/gtk.h> #include <gtk/gtk.h>
#include <math.h> #include <math.h>
#include <threads.h> #include <errno.h>
#include <stdlib.h>
#include <CL/cl.h>
struct canvas_buffer { struct canvas_buffer {
unsigned int *mandelbrot_buffer; unsigned int *mandelbrot_buffer;
unsigned int iterations; unsigned int iterations;
unsigned int height; unsigned int height;
unsigned int width; unsigned int width;
double center_x; double center_x;
double center_y; double center_y;
double x_span; double x_span;
double y_span; double y_span;
}; };
static gboolean on_main_window_close(GtkWidget *window, gpointer data) static gboolean on_main_window_close(GtkWidget *window, gpointer data)
@ -20,6 +22,43 @@ static gboolean on_main_window_close(GtkWidget *window, gpointer data)
return FALSE; return FALSE;
} }
void check_error(cl_int error)
{
if (error != CL_SUCCESS) {
printf("OpenCL call failed with error %d\n", (int)error);
exit(error);
}
}
void load_kernel_from_file(char *file, char **src)
{
long fsize;
FILE *f = fopen(file, "rb");
fseek(f, 0, SEEK_END);
fsize = ftell(f);
fseek(f, 0, SEEK_SET); //same as rewind(f);
*src = (char *)malloc(fsize + 1);
fread(*src, fsize, 1, f);
fclose(f);
(*src)[fsize] = 0;
}
cl_program create_program(char *src, cl_context context)
{
cl_program program;
size_t lengths[1];
cl_int error = 0;
lengths[0] = strlen(src);
printf("strlen: %u\n", (unsigned int)lengths[0]);
program = clCreateProgramWithSource(context, 1, (const char **)&src,
lengths, &error);
check_error(error);
return program;
}
unsigned int *data_array = NULL;
static gboolean drawing_callback(GtkWidget *widget, cairo_t *cr, gpointer data) static gboolean drawing_callback(GtkWidget *widget, cairo_t *cr, gpointer data)
{ {
struct canvas_buffer *buff = (struct canvas_buffer *)data; struct canvas_buffer *buff = (struct canvas_buffer *)data;
@ -38,24 +77,24 @@ static gboolean drawing_callback(GtkWidget *widget, cairo_t *cr, gpointer data)
cairo_scale(cr, 1, -1); cairo_scale(cr, 1, -1);
cairo_translate(cr, (double)width/2.0, -(double)height/2.0); cairo_translate(cr, (double)width/2.0, -(double)height/2.0);
for (x = 0; x < buff->width; x++) {
for (y = 0; y < buff->height; y++) {
cairo_rectangle(cr,
((double)x - (double)(buff->width - 1) / 2),
((double)y - (double)(buff->height - 1) / 2),
1,
1);
if (buff->mandelbrot_buffer[y * buff->width + x] == buff->iterations) {
cairo_set_source_rgb (cr, 0, 0, 0);
} else {
color_scale = (double)buff->mandelbrot_buffer[y * buff->width + x] / buff->iterations;
cairo_set_source_rgb (cr, (sqrt(1-color_scale)), (color_scale*color_scale), color_scale);
}
cairo_fill(cr);
} for (x = 0; x < buff->width; x++) {
} for (y = 0; y < buff->height; y++) {
cairo_rectangle(cr,
((double)x - (double)(buff->width - 1) / 2),
((double)y - (double)(buff->height - 1) / 2),
1,
1);
if (data_array[y * buff->width + x] == buff->iterations) {
cairo_set_source_rgb (cr, 0, 0, 0);
} else {
color_scale = (double)data_array[y * buff->width + x] / buff->iterations;
cairo_set_source_rgb (cr, (sqrt(1-color_scale)), (color_scale*color_scale), color_scale);
}
cairo_fill(cr);
}
}
/* Drawing code end */ /* Drawing code end */
@ -64,58 +103,124 @@ static gboolean drawing_callback(GtkWidget *widget, cairo_t *cr, gpointer data)
return FALSE; return FALSE;
} }
static void calculate_mandelbrot(struct canvas_buffer *buff)
static int calculate_mandelbrot(struct canvas_buffer *buff)
{ {
double val_per_x_pixel;
double val_per_y_pixel; int i;
unsigned int i; cl_int error;
unsigned int pixel_x; cl_int ret;
unsigned int pixel_y; cl_platform_id *platform_ids = NULL;
double point_real, point_imag; cl_device_id *device_ids = NULL;
double z_real, z_imag; cl_uint platform_id_count = 0;
double z2_real, z2_imag; cl_uint device_id_count = 0;
cl_context context;
cl_program program;
cl_kernel kernel;
cl_command_queue queue;
cl_mem dat_buff;
char *source_code = NULL;
char temp_buff[100];
size_t data_size;
size_t work_size = 64;
if (!buff) data_size = buff->width*buff->height;
return; data_array = (unsigned int *)malloc(sizeof(data_array[0])*data_size);
if (!data_array)
return -ENOMEM;
/* Setup the calculation data */
val_per_x_pixel = (buff->x_span) / (buff->width - 1);
val_per_y_pixel = (buff->y_span) / (buff->height - 1);
for (pixel_y = 0; pixel_y < buff->height; pixel_y++) { clGetPlatformIDs(0, NULL, &platform_id_count);
for (pixel_x = 0; pixel_x < buff->width; pixel_x++) { if (platform_id_count == 0)
point_real = (((double)pixel_x - (double)(buff->width - 1) / 2)) * val_per_x_pixel + buff->center_x; return -ENOMEM;
point_imag = (((double)pixel_y - (double)(buff->height - 1) / 2)) * val_per_y_pixel + buff->center_y;
z_real = 0.0; platform_ids = (cl_platform_id *)malloc(platform_id_count *
z_imag = 0.0; sizeof(cl_platform_id));
if (platform_ids == NULL)
return -ENOMEM;
/* Check for convergence */ clGetPlatformIDs(platform_id_count, platform_ids, NULL);
for (i = 0; i < buff->iterations; i++) {
z2_real = z_real * z_real - z_imag * z_imag; printf("Platforms available: %u\n", (unsigned int)platform_id_count);
z2_imag = 2.0 * z_real * z_imag;
z_real = z2_real + point_real; for (i = 0; i < platform_id_count; i++) {
z_imag = z2_imag + point_imag; temp_buff[0] = '\0';
clGetPlatformInfo(platform_ids[i], CL_PLATFORM_NAME, sizeof(temp_buff), temp_buff, NULL);
printf("Platform ID %d: %s\n", i, temp_buff);
}
if ((z_real * z_real + z_imag * z_imag) >= 4.0) clGetDeviceIDs(platform_ids[0], CL_DEVICE_TYPE_ALL, 0, NULL,
break; &device_id_count);
} printf("Device in Platform 0 count: %u\n",
(unsigned int)device_id_count);
buff->mandelbrot_buffer[pixel_y * buff->width + pixel_x] = i; if (device_id_count == 0)
} return -1;
device_ids = (cl_device_id *) malloc(sizeof(cl_device_id)
*device_id_count);
clGetDeviceIDs(platform_ids[0], CL_DEVICE_TYPE_ALL, device_id_count,
device_ids, NULL);
for (i = 0; i < device_id_count; i++) {
temp_buff[0] = '\0';
clGetDeviceInfo(device_ids[i], CL_DEVICE_NAME, sizeof(temp_buff), temp_buff, NULL);
printf("Device ID %d: %s\n", i, temp_buff);
} }
context = clCreateContext(NULL, 1, &device_ids[0], NULL, NULL, &error);
check_error(error);
queue = clCreateCommandQueue(context, device_ids[0], 0, &error);
dat_buff = clCreateBuffer(context, CL_MEM_WRITE_ONLY |
CL_MEM_COPY_HOST_PTR,
sizeof(data_array[0])*data_size, data_array, &error);
check_error(error);
load_kernel_from_file("cl_kernels/mandelbrot.cl", &source_code);
program = create_program(source_code, context);
/* Compile the source code */
check_error(clBuildProgram(program, device_id_count,
device_ids, NULL, NULL, NULL));
kernel = clCreateKernel(program, "mandelbrot", &error);
/* Setting the arguments */
clSetKernelArg(kernel, 0, sizeof(cl_mem), (void *)&dat_buff);
clSetKernelArg(kernel, 1, sizeof(unsigned int), (void *)&buff->iterations);
clSetKernelArg(kernel, 2, sizeof(double), (void *)&buff->center_x);
clSetKernelArg(kernel, 3, sizeof(double), (void *)&buff->center_y);
clSetKernelArg(kernel, 4, sizeof(double), (void *)&buff->x_span);
clSetKernelArg(kernel, 5, sizeof(double), (void *)&buff->y_span);
clSetKernelArg(kernel, 6, sizeof(unsigned int), (void *)&buff->width);
clSetKernelArg(kernel, 7, sizeof(unsigned int), (void *)&buff->height);
ret = clEnqueueNDRangeKernel(queue, kernel, 1, NULL, &data_size, &work_size, 0, NULL, NULL);
check_error(ret);
clEnqueueReadBuffer(queue, dat_buff, CL_TRUE, 0, data_size*sizeof(data_array[0]), data_array, 0, NULL, NULL);
ret = clFlush(queue);
ret = clFinish(queue);
ret = clReleaseKernel(kernel);
ret = clReleaseProgram(program);
ret = clReleaseMemObject(dat_buff);
ret = clReleaseCommandQueue(queue);
ret = clReleaseContext(context);
free(platform_ids);
free(device_ids);
return 0;
} }
int f(void * a)
{
return 1;
}
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
@ -133,22 +238,19 @@ int main(int argc, char **argv)
g_signal_connect(window, "delete-event", G_CALLBACK(on_main_window_close), NULL); g_signal_connect(window, "delete-event", G_CALLBACK(on_main_window_close), NULL);
g_signal_connect(G_OBJECT(drawing_area), g_signal_connect(G_OBJECT(drawing_area),
"draw", G_CALLBACK(drawing_callback), (gpointer)&mandelbrot_buff); "draw", G_CALLBACK(drawing_callback), (gpointer)&mandelbrot_buff);
g_object_unref(builder); g_object_unref(builder);
thrd_t t;
thrd_create(&t, f, NULL);
mandelbrot_buff.x_span = 1;//2.8;
mandelbrot_buff.x_span = 2.8; mandelbrot_buff.y_span = 0.5;//2.25;
mandelbrot_buff.y_span = 2.25; mandelbrot_buff.center_x = -0.6;
mandelbrot_buff.center_x = -0.5; mandelbrot_buff.center_y = 0.6;
mandelbrot_buff.center_y = 0.0; mandelbrot_buff.width = 4000;
mandelbrot_buff.width = 1900; mandelbrot_buff.height = 2000;
mandelbrot_buff.height = 1000; mandelbrot_buff.iterations = 70;
mandelbrot_buff.iterations = 300; mandelbrot_buff.mandelbrot_buffer = NULL;
mandelbrot_buff.mandelbrot_buffer = (unsigned int *)malloc(sizeof(unsigned int) * mandelbrot_buff.height * mandelbrot_buff.width);
calculate_mandelbrot(&mandelbrot_buff); calculate_mandelbrot(&mandelbrot_buff);