diff options
| -rw-r--r-- | .gitignore | 6 | ||||
| -rw-r--r-- | Makefile | 17 | ||||
| -rw-r--r-- | balls.c | 72 | ||||
| -rw-r--r-- | sysfatal.c | 15 | ||||
| -rw-r--r-- | sysfatal.h | 1 |
5 files changed, 111 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..7615922 --- /dev/null +++ b/.gitignore @@ -0,0 +1,6 @@ +*.o +balls +*.pdf +*.png +*.aux +*.log diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..ec42712 --- /dev/null +++ b/Makefile @@ -0,0 +1,17 @@ +CC = gcc +CFLAGS = -std=c99 -Wall -pedantic -Wno-deprecated-declarations +LDFLAGS = -lOpenCL -lglut -lGLU -lGL -lGLX + +SRC = balls.c sysfatal.c +OBJ = ${SRC:.c=.o} + +balls: ${OBJ} + ${CC} -o $@ ${LDFLAGS} $^ + +%.o: %.c + ${CC} -c ${CFLAGS} $< + +clean: + rm -f *.o balls + +${OBJ}: sysfatal.h @@ -0,0 +1,72 @@ +#define CL_TARGET_OPENCL_VERSION 110 + +#include <stdio.h> +#include <GL/glut.h> +#include <GL/glx.h> +#include <CL/cl_gl.h> + +#include "sysfatal.h" + +#define PROG "balls.cl" +#define KERNEL "balls" + +enum { WIDTH = 640, HEIGHT = 480 }; + +void initGL(int argc, char *argv[]); +cl_context initCL(void); + +int +main(int argc, char *argv[]) { + cl_context context; + + initGL(argc, argv); + + context = initCL(); + + clReleaseContext(context); +} + +void +initGL(int argc, char *argv[]) { + glutInit(&argc, argv); + glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA); + glutInitWindowSize(WIDTH, HEIGHT); + glutCreateWindow("Balls"); + glClearColor(1, 1, 1, 1); +} + +cl_context +initCL(void) { + cl_platform_id platform; + cl_device_id device; + cl_context context; + cl_int err; + + if (clGetPlatformIDs(1, &platform, NULL) < 0) + sysfatal("No OpenCL platform available.\n"); + + #ifdef WINDOWS + cl_context_properties properties[] = { + CL_GL_CONTEXT_KHR, (cl_context_properties) wglGetCurrentContext(), + CL_GLX_DISPLAY_KHR, (cl_context_properties) wctlGetCurrentDC(), + CL_CONTEXT_PLATFORM, (cl_context_properties) platform, + 0 + }; + #else + cl_context_properties properties[] = { + CL_GL_CONTEXT_KHR, (cl_context_properties) glXGetCurrentContext(), + CL_GLX_DISPLAY_KHR, (cl_context_properties) glXGetCurrentDisplay(), + CL_CONTEXT_PLATFORM, (cl_context_properties) platform, + 0 + }; + #endif + + if (clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, 1, &device, NULL) < 0) + sysfatal("No GPUs available.\n"); + + context = clCreateContext(properties, 1, &device, NULL, NULL, &err); + if (err < 0) + sysfatal("Failed to create context.\n"); + + return context; +} diff --git a/sysfatal.c b/sysfatal.c new file mode 100644 index 0000000..9a63264 --- /dev/null +++ b/sysfatal.c @@ -0,0 +1,15 @@ +#include <stdlib.h> +#include <stdio.h> +#include <stdarg.h> +#include "sysfatal.h" + +void +sysfatal(const char * format, ...) { + va_list args; + + va_start(args, format); + vfprintf(stderr, format, args); + va_end(args); + fflush(NULL); + exit(1); +} diff --git a/sysfatal.h b/sysfatal.h new file mode 100644 index 0000000..d56ec5d --- /dev/null +++ b/sysfatal.h @@ -0,0 +1 @@ +void sysfatal(const char *format, ...); |