diff options
Diffstat (limited to 'intern/cycles/device/device_opencl.cpp')
| -rw-r--r-- | intern/cycles/device/device_opencl.cpp | 2440 |
1 files changed, 2312 insertions, 128 deletions
diff --git a/intern/cycles/device/device_opencl.cpp b/intern/cycles/device/device_opencl.cpp index 1147cbd69b4..25eb160d71b 100644 --- a/intern/cycles/device/device_opencl.cpp +++ b/intern/cycles/device/device_opencl.cpp @@ -39,6 +39,30 @@ CCL_NAMESPACE_BEGIN #define CL_MEM_PTR(p) ((cl_mem)(uintptr_t)(p)) +#define KERNEL_APPEND_ARG(kernel_name, arg) \ + opencl_assert(clSetKernelArg(kernel_name, narg++, sizeof(arg), (void*)&arg)) + +/* Macro declarations used with split kernel */ + +/* Macro to enable/disable work-stealing */ +#define __WORK_STEALING__ + +#define SPLIT_KERNEL_LOCAL_SIZE_X 64 +#define SPLIT_KERNEL_LOCAL_SIZE_Y 1 + +/* This value may be tuned according to the scene we are rendering. + * + * Modifying PATH_ITER_INC_FACTOR value proportional to number of expected + * ray-bounces will improve performance. + */ +#define PATH_ITER_INC_FACTOR 8 + +/* When allocate global memory in chunks. We may not be able to + * allocate exactly "CL_DEVICE_MAX_MEM_ALLOC_SIZE" bytes in chunks; + * Since some bytes may be needed for aligning chunks of memory; + * This is the amount of memory that we dedicate for that purpose. + */ +#define DATA_ALLOCATION_MEM_FACTOR 5000000 //5MB static cl_device_type opencl_device_type() { @@ -94,11 +118,11 @@ static string opencl_kernel_build_options(const string& platform, const string * build_options += "-D__KERNEL_OPENCL_AMD__ "; else if(platform == "Intel(R) OpenCL") { - build_options += "-D__KERNEL_OPENCL_INTEL_CPU__"; + build_options += "-D__KERNEL_OPENCL_INTEL_CPU__ "; /* options for gdb source level kernel debugging. this segfaults on linux currently */ if(opencl_kernel_use_debug() && debug_src) - build_options += "-g -s \"" + *debug_src + "\""; + build_options += "-g -s \"" + *debug_src + "\" "; } if(opencl_kernel_use_debug()) @@ -118,14 +142,18 @@ class OpenCLCache { thread_mutex *mutex; cl_context context; - cl_program program; + /* cl_program for shader, bake, film_convert kernels (used in OpenCLDeviceBase) */ + cl_program ocl_dev_base_program; + /* cl_program for megakernel (used in OpenCLDeviceMegaKernel) */ + cl_program ocl_dev_megakernel_program; - Slot() : mutex(NULL), context(NULL), program(NULL) {} + Slot() : mutex(NULL), context(NULL), ocl_dev_base_program(NULL), ocl_dev_megakernel_program(NULL) {} Slot(const Slot &rhs) : mutex(rhs.mutex) , context(rhs.context) - , program(rhs.program) + , ocl_dev_base_program(rhs.ocl_dev_base_program) + , ocl_dev_megakernel_program(rhs.ocl_dev_megakernel_program) { /* copy can only happen in map insert, assert that */ assert(mutex == NULL); @@ -236,6 +264,12 @@ class OpenCLCache } public: + + enum ProgramName { + OCL_DEV_BASE_PROGRAM, + OCL_DEV_MEGAKERNEL_PROGRAM, + }; + /* see get_something comment */ static cl_context get_context(cl_platform_id platform, cl_device_id device, thread_scoped_lock &slot_locker) @@ -254,10 +288,21 @@ public: } /* see get_something comment */ - static cl_program get_program(cl_platform_id platform, cl_device_id device, + static cl_program get_program(cl_platform_id platform, cl_device_id device, ProgramName program_name, thread_scoped_lock &slot_locker) { - cl_program program = get_something<cl_program>(platform, device, &Slot::program, slot_locker); + cl_program program = NULL; + + if(program_name == OCL_DEV_BASE_PROGRAM) { + /* Get program related to OpenCLDeviceBase */ + program = get_something<cl_program>(platform, device, &Slot::ocl_dev_base_program, slot_locker); + } + else if(program_name == OCL_DEV_MEGAKERNEL_PROGRAM) { + /* Get program related to megakernel */ + program = get_something<cl_program>(platform, device, &Slot::ocl_dev_megakernel_program, slot_locker); + } else { + assert(!"Invalid program name"); + } if(!program) return NULL; @@ -284,10 +329,18 @@ public: } /* see store_something comment */ - static void store_program(cl_platform_id platform, cl_device_id device, cl_program program, + static void store_program(cl_platform_id platform, cl_device_id device, cl_program program, ProgramName program_name, thread_scoped_lock &slot_locker) { - store_something<cl_program>(platform, device, program, &Slot::program, slot_locker); + if(program_name == OCL_DEV_BASE_PROGRAM) { + store_something<cl_program>(platform, device, program, &Slot::ocl_dev_base_program, slot_locker); + } + else if(program_name == OCL_DEV_MEGAKERNEL_PROGRAM) { + store_something<cl_program>(platform, device, program, &Slot::ocl_dev_megakernel_program, slot_locker); + } else { + assert(!"Invalid program name\n"); + return; + } /* increment reference count in OpenCL. * The caller is going to release the object when done with it. */ @@ -304,8 +357,10 @@ public: thread_scoped_lock cache_lock(self.cache_lock); foreach(CacheMap::value_type &item, self.cache) { - if(item.second.program != NULL) - clReleaseProgram(item.second.program); + if(item.second.ocl_dev_base_program != NULL) + clReleaseProgram(item.second.ocl_dev_base_program); + if(item.second.ocl_dev_megakernel_program != NULL) + clReleaseProgram(item.second.ocl_dev_megakernel_program); if(item.second.context != NULL) clReleaseContext(item.second.context); } @@ -314,7 +369,7 @@ public: } }; -class OpenCLDevice : public Device +class OpenCLDeviceBase : public Device { public: DedicatedTaskPool task_pool; @@ -323,7 +378,6 @@ public: cl_platform_id cpPlatform; cl_device_id cdDevice; cl_program cpProgram; - cl_kernel ckPathTraceKernel; cl_kernel ckFilmConvertByteKernel; cl_kernel ckFilmConvertHalfFloatKernel; cl_kernel ckShaderKernel; @@ -385,7 +439,7 @@ public: } } - OpenCLDevice(DeviceInfo& info, Stats &stats, bool background_) + OpenCLDeviceBase(DeviceInfo& info, Stats &stats, bool background_) : Device(info, stats, background_) { cpPlatform = NULL; @@ -393,7 +447,6 @@ public: cxContext = NULL; cqCommandQueue = NULL; cpProgram = NULL; - ckPathTraceKernel = NULL; ckFilmConvertByteKernel = NULL; ckFilmConvertHalfFloatKernel = NULL; ckShaderKernel = NULL; @@ -501,7 +554,7 @@ public: if(opencl_error(ciErr)) return; - fprintf(stderr,"Device init succes\n"); + fprintf(stderr, "Device init success\n"); device_initialized = true; } @@ -547,7 +600,11 @@ public: return true; } - bool load_binary(const string& kernel_path, const string& clbin, const string *debug_src = NULL) + bool load_binary(const string& /*kernel_path*/, + const string& clbin, + string custom_kernel_build_options, + cl_program *program, + const string *debug_src = NULL) { /* read binary into memory */ vector<uint8_t> binary; @@ -562,7 +619,7 @@ public: size_t size = binary.size(); const uint8_t *bytes = &binary[0]; - cpProgram = clCreateProgramWithBinary(cxContext, 1, &cdDevice, + *program = clCreateProgramWithBinary(cxContext, 1, &cdDevice, &size, &bytes, &status, &ciErr); if(opencl_error(status) || opencl_error(ciErr)) { @@ -570,16 +627,16 @@ public: return false; } - if(!build_kernel(kernel_path, debug_src)) + if(!build_kernel(program, custom_kernel_build_options, debug_src)) return false; return true; } - bool save_binary(const string& clbin) + bool save_binary(cl_program *program, const string& clbin) { size_t size = 0; - clGetProgramInfo(cpProgram, CL_PROGRAM_BINARY_SIZES, sizeof(size_t), &size, NULL); + clGetProgramInfo(*program, CL_PROGRAM_BINARY_SIZES, sizeof(size_t), &size, NULL); if(!size) return false; @@ -587,7 +644,7 @@ public: vector<uint8_t> binary(size); uint8_t *bytes = &binary[0]; - clGetProgramInfo(cpProgram, CL_PROGRAM_BINARIES, sizeof(uint8_t*), &bytes, NULL); + clGetProgramInfo(*program, CL_PROGRAM_BINARIES, sizeof(uint8_t*), &bytes, NULL); if(!path_write_binary(clbin, binary)) { opencl_error(string_printf("OpenCL failed to write cached binary %s.", clbin.c_str())); @@ -597,20 +654,23 @@ public: return true; } - bool build_kernel(const string& /*kernel_path*/, const string *debug_src = NULL) + bool build_kernel(cl_program *kernel_program, + string custom_kernel_build_options, + const string *debug_src = NULL) { - string build_options = opencl_kernel_build_options(platform_name, debug_src); - - ciErr = clBuildProgram(cpProgram, 0, NULL, build_options.c_str(), NULL, NULL); + string build_options; + build_options = opencl_kernel_build_options(platform_name, debug_src) + custom_kernel_build_options; + + ciErr = clBuildProgram(*kernel_program, 0, NULL, build_options.c_str(), NULL, NULL); /* show warnings even if build is successful */ size_t ret_val_size = 0; - clGetProgramBuildInfo(cpProgram, cdDevice, CL_PROGRAM_BUILD_LOG, 0, NULL, &ret_val_size); + clGetProgramBuildInfo(*kernel_program, cdDevice, CL_PROGRAM_BUILD_LOG, 0, NULL, &ret_val_size); if(ret_val_size > 1) { - vector<char> build_log(ret_val_size+1); - clGetProgramBuildInfo(cpProgram, cdDevice, CL_PROGRAM_BUILD_LOG, ret_val_size, &build_log[0], NULL); + vector<char> build_log(ret_val_size + 1); + clGetProgramBuildInfo(*kernel_program, cdDevice, CL_PROGRAM_BUILD_LOG, ret_val_size, &build_log[0], NULL); build_log[ret_val_size] = '\0'; fprintf(stderr, "OpenCL kernel build output:\n"); @@ -625,12 +685,15 @@ public: return true; } - bool compile_kernel(const string& kernel_path, const string& kernel_md5, const string *debug_src = NULL) + bool compile_kernel(const string& kernel_path, + string source, + string custom_kernel_build_options, + cl_program *kernel_program, + const string *debug_src = NULL) { /* we compile kernels consisting of many files. unfortunately opencl * kernel caches do not seem to recognize changes in included files. * so we force recompile on changes by adding the md5 hash of all files */ - string source = "#include \"kernel.cl\" // " + kernel_md5 + "\n"; source = path_source_replace_includes(source, kernel_path); if(debug_src) @@ -639,7 +702,7 @@ public: size_t source_len = source.size(); const char *source_str = source.c_str(); - cpProgram = clCreateProgramWithSource(cxContext, 1, &source_str, &source_len, &ciErr); + *kernel_program = clCreateProgramWithSource(cxContext, 1, &source_str, &source_len, &ciErr); if(opencl_error(ciErr)) return false; @@ -647,7 +710,7 @@ public: double starttime = time_dt(); printf("Compiling OpenCL kernel ...\n"); - if(!build_kernel(kernel_path, debug_src)) + if(!build_kernel(kernel_program, custom_kernel_build_options, debug_src)) return false; printf("Kernel compilation finished in %.2lfs.\n", time_dt() - starttime); @@ -655,7 +718,7 @@ public: return true; } - string device_md5_hash() + string device_md5_hash(string kernel_custom_build_options = "") { MD5Hash md5; char version[256], driver[256], name[256], vendor[256]; @@ -671,12 +734,13 @@ public: md5.append((uint8_t*)driver, strlen(driver)); string options = opencl_kernel_build_options(platform_name); + options += kernel_custom_build_options; md5.append((uint8_t*)options.c_str(), options.size()); return md5.get_hex(); } - bool load_kernels(bool /*experimental*/) + bool load_kernels(const DeviceRequestedFeatures& /*requested_features*/) { /* verify if device was initialized */ if(!device_initialized) { @@ -686,7 +750,7 @@ public: /* try to use cached kernel */ thread_scoped_lock cache_locker; - cpProgram = OpenCLCache::get_program(cpPlatform, cdDevice, cache_locker); + cpProgram = OpenCLCache::get_program(cpPlatform, cdDevice, OpenCLCache::OCL_DEV_BASE_PROGRAM, cache_locker); if(!cpProgram) { /* verify we have right opencl version */ @@ -712,28 +776,27 @@ public: } /* if exists already, try use it */ - if(path_exists(clbin) && load_binary(kernel_path, clbin, debug_src)) { + if(path_exists(clbin) && load_binary(kernel_path, clbin, "", &cpProgram)) { /* kernel loaded from binary */ } else { + + string init_kernel_source = "#include \"kernel.cl\" // " + kernel_md5 + "\n"; + /* if does not exist or loading binary failed, compile kernel */ - if(!compile_kernel(kernel_path, kernel_md5, debug_src)) + if(!compile_kernel(kernel_path, init_kernel_source, "", &cpProgram, debug_src)) return false; /* save binary for reuse */ - if(!save_binary(clbin)) + if(!save_binary(&cpProgram, clbin)) return false; } /* cache the program */ - OpenCLCache::store_program(cpPlatform, cdDevice, cpProgram, cache_locker); + OpenCLCache::store_program(cpPlatform, cdDevice, cpProgram, OpenCLCache::OCL_DEV_BASE_PROGRAM, cache_locker); } /* find kernels */ - ckPathTraceKernel = clCreateKernel(cpProgram, "kernel_ocl_path_trace", &ciErr); - if(opencl_error(ciErr)) - return false; - ckFilmConvertByteKernel = clCreateKernel(cpProgram, "kernel_ocl_convert_to_byte", &ciErr); if(opencl_error(ciErr)) return false; @@ -753,7 +816,7 @@ public: return true; } - ~OpenCLDevice() + ~OpenCLDeviceBase() { task_pool.stop(); @@ -766,12 +829,14 @@ public: delete mt->second; } - if(ckPathTraceKernel) - clReleaseKernel(ckPathTraceKernel); if(ckFilmConvertByteKernel) clReleaseKernel(ckFilmConvertByteKernel); if(ckFilmConvertHalfFloatKernel) clReleaseKernel(ckFilmConvertHalfFloatKernel); + if(ckShaderKernel) + clReleaseKernel(ckShaderKernel); + if(ckBakeKernel) + clReleaseKernel(ckBakeKernel); if(cpProgram) clReleaseProgram(cpProgram); if(cqCommandQueue) @@ -913,42 +978,6 @@ public: opencl_assert(clFlush(cqCommandQueue)); } - void path_trace(RenderTile& rtile, int sample) - { - /* cast arguments to cl types */ - cl_mem d_data = CL_MEM_PTR(const_mem_map["__data"]->device_pointer); - cl_mem d_buffer = CL_MEM_PTR(rtile.buffer); - cl_mem d_rng_state = CL_MEM_PTR(rtile.rng_state); - cl_int d_x = rtile.x; - cl_int d_y = rtile.y; - cl_int d_w = rtile.w; - cl_int d_h = rtile.h; - cl_int d_sample = sample; - cl_int d_offset = rtile.offset; - cl_int d_stride = rtile.stride; - - /* sample arguments */ - cl_uint narg = 0; - - opencl_assert(clSetKernelArg(ckPathTraceKernel, narg++, sizeof(d_data), (void*)&d_data)); - opencl_assert(clSetKernelArg(ckPathTraceKernel, narg++, sizeof(d_buffer), (void*)&d_buffer)); - opencl_assert(clSetKernelArg(ckPathTraceKernel, narg++, sizeof(d_rng_state), (void*)&d_rng_state)); - -#define KERNEL_TEX(type, ttype, name) \ - set_kernel_arg_mem(ckPathTraceKernel, &narg, #name); -#include "kernel_textures.h" - - opencl_assert(clSetKernelArg(ckPathTraceKernel, narg++, sizeof(d_sample), (void*)&d_sample)); - opencl_assert(clSetKernelArg(ckPathTraceKernel, narg++, sizeof(d_x), (void*)&d_x)); - opencl_assert(clSetKernelArg(ckPathTraceKernel, narg++, sizeof(d_y), (void*)&d_y)); - opencl_assert(clSetKernelArg(ckPathTraceKernel, narg++, sizeof(d_w), (void*)&d_w)); - opencl_assert(clSetKernelArg(ckPathTraceKernel, narg++, sizeof(d_h), (void*)&d_h)); - opencl_assert(clSetKernelArg(ckPathTraceKernel, narg++, sizeof(d_offset), (void*)&d_offset)); - opencl_assert(clSetKernelArg(ckPathTraceKernel, narg++, sizeof(d_stride), (void*)&d_stride)); - - enqueue_kernel(ckPathTraceKernel, d_w, d_h); - } - void set_kernel_arg_mem(cl_kernel kernel, cl_uint *narg, const char *name) { cl_mem ptr; @@ -985,23 +1014,23 @@ public: cl_kernel ckFilmConvertKernel = (rgba_byte)? ckFilmConvertByteKernel: ckFilmConvertHalfFloatKernel; - opencl_assert(clSetKernelArg(ckFilmConvertKernel, narg++, sizeof(d_data), (void*)&d_data)); - opencl_assert(clSetKernelArg(ckFilmConvertKernel, narg++, sizeof(d_rgba), (void*)&d_rgba)); - opencl_assert(clSetKernelArg(ckFilmConvertKernel, narg++, sizeof(d_buffer), (void*)&d_buffer)); + /* TODO : Make the kernel launch similar to Cuda */ + KERNEL_APPEND_ARG(ckFilmConvertKernel, d_data); + KERNEL_APPEND_ARG(ckFilmConvertKernel, d_rgba); + KERNEL_APPEND_ARG(ckFilmConvertKernel, d_buffer); #define KERNEL_TEX(type, ttype, name) \ set_kernel_arg_mem(ckFilmConvertKernel, &narg, #name); #include "kernel_textures.h" +#undef KERNEL_TEX - opencl_assert(clSetKernelArg(ckFilmConvertKernel, narg++, sizeof(d_sample_scale), (void*)&d_sample_scale)); - opencl_assert(clSetKernelArg(ckFilmConvertKernel, narg++, sizeof(d_x), (void*)&d_x)); - opencl_assert(clSetKernelArg(ckFilmConvertKernel, narg++, sizeof(d_y), (void*)&d_y)); - opencl_assert(clSetKernelArg(ckFilmConvertKernel, narg++, sizeof(d_w), (void*)&d_w)); - opencl_assert(clSetKernelArg(ckFilmConvertKernel, narg++, sizeof(d_h), (void*)&d_h)); - opencl_assert(clSetKernelArg(ckFilmConvertKernel, narg++, sizeof(d_offset), (void*)&d_offset)); - opencl_assert(clSetKernelArg(ckFilmConvertKernel, narg++, sizeof(d_stride), (void*)&d_stride)); - - + KERNEL_APPEND_ARG(ckFilmConvertKernel, d_sample_scale); + KERNEL_APPEND_ARG(ckFilmConvertKernel, d_x); + KERNEL_APPEND_ARG(ckFilmConvertKernel, d_y); + KERNEL_APPEND_ARG(ckFilmConvertKernel, d_w); + KERNEL_APPEND_ARG(ckFilmConvertKernel, d_h); + KERNEL_APPEND_ARG(ckFilmConvertKernel, d_offset); + KERNEL_APPEND_ARG(ckFilmConvertKernel, d_stride); enqueue_kernel(ckFilmConvertKernel, d_w, d_h); } @@ -1034,19 +1063,21 @@ public: cl_int d_sample = sample; - opencl_assert(clSetKernelArg(kernel, narg++, sizeof(d_data), (void*)&d_data)); - opencl_assert(clSetKernelArg(kernel, narg++, sizeof(d_input), (void*)&d_input)); - opencl_assert(clSetKernelArg(kernel, narg++, sizeof(d_output), (void*)&d_output)); + /* TODO : Make the kernel launch similar to Cuda */ + KERNEL_APPEND_ARG(kernel, d_data); + KERNEL_APPEND_ARG(kernel, d_input); + KERNEL_APPEND_ARG(kernel, d_output); #define KERNEL_TEX(type, ttype, name) \ set_kernel_arg_mem(kernel, &narg, #name); #include "kernel_textures.h" +#undef KERNEL_TEX - opencl_assert(clSetKernelArg(kernel, narg++, sizeof(d_shader_eval_type), (void*)&d_shader_eval_type)); - opencl_assert(clSetKernelArg(kernel, narg++, sizeof(d_shader_x), (void*)&d_shader_x)); - opencl_assert(clSetKernelArg(kernel, narg++, sizeof(d_shader_w), (void*)&d_shader_w)); - opencl_assert(clSetKernelArg(kernel, narg++, sizeof(d_offset), (void*)&d_offset)); - opencl_assert(clSetKernelArg(kernel, narg++, sizeof(d_sample), (void*)&d_sample)); + KERNEL_APPEND_ARG(kernel, d_shader_eval_type); + KERNEL_APPEND_ARG(kernel, d_shader_x); + KERNEL_APPEND_ARG(kernel, d_shader_w); + KERNEL_APPEND_ARG(kernel, d_offset); + KERNEL_APPEND_ARG(kernel, d_sample); enqueue_kernel(kernel, task.shader_w, 1); @@ -1054,6 +1085,305 @@ public: } } + class OpenCLDeviceTask : public DeviceTask { + public: + OpenCLDeviceTask(OpenCLDeviceBase *device, DeviceTask& task) + : DeviceTask(task) + { + run = function_bind(&OpenCLDeviceBase::thread_run, + device, + this); + } + }; + + int get_split_task_count(DeviceTask& /*task*/) + { + return 1; + } + + void task_add(DeviceTask& task) + { + task_pool.push(new OpenCLDeviceTask(this, task)); + } + + void task_wait() + { + task_pool.wait(); + } + + void task_cancel() + { + task_pool.cancel(); + } + + virtual void thread_run(DeviceTask * /*task*/) = 0; + +protected: + class ArgumentWrapper { + public: + ArgumentWrapper() : size(0), pointer(NULL) {} + template <typename T> + ArgumentWrapper(T& argument) : size(sizeof(argument)), + pointer(&argument) { } + size_t size; + void *pointer; + }; + + /* TODO(sergey): In the future we can use variadic templates, once + * C++0x is allowed. Should allow to clean this up a bit. + */ + int kernel_set_args(cl_kernel kernel, + int start_argument_index, + const ArgumentWrapper& arg1 = ArgumentWrapper(), + const ArgumentWrapper& arg2 = ArgumentWrapper(), + const ArgumentWrapper& arg3 = ArgumentWrapper(), + const ArgumentWrapper& arg4 = ArgumentWrapper(), + const ArgumentWrapper& arg5 = ArgumentWrapper(), + const ArgumentWrapper& arg6 = ArgumentWrapper(), + const ArgumentWrapper& arg7 = ArgumentWrapper(), + const ArgumentWrapper& arg8 = ArgumentWrapper(), + const ArgumentWrapper& arg9 = ArgumentWrapper(), + const ArgumentWrapper& arg10 = ArgumentWrapper(), + const ArgumentWrapper& arg11 = ArgumentWrapper(), + const ArgumentWrapper& arg12 = ArgumentWrapper(), + const ArgumentWrapper& arg13 = ArgumentWrapper(), + const ArgumentWrapper& arg14 = ArgumentWrapper(), + const ArgumentWrapper& arg15 = ArgumentWrapper(), + const ArgumentWrapper& arg16 = ArgumentWrapper(), + const ArgumentWrapper& arg17 = ArgumentWrapper(), + const ArgumentWrapper& arg18 = ArgumentWrapper(), + const ArgumentWrapper& arg19 = ArgumentWrapper(), + const ArgumentWrapper& arg20 = ArgumentWrapper(), + const ArgumentWrapper& arg21 = ArgumentWrapper(), + const ArgumentWrapper& arg22 = ArgumentWrapper(), + const ArgumentWrapper& arg23 = ArgumentWrapper(), + const ArgumentWrapper& arg24 = ArgumentWrapper(), + const ArgumentWrapper& arg25 = ArgumentWrapper(), + const ArgumentWrapper& arg26 = ArgumentWrapper(), + const ArgumentWrapper& arg27 = ArgumentWrapper(), + const ArgumentWrapper& arg28 = ArgumentWrapper(), + const ArgumentWrapper& arg29 = ArgumentWrapper(), + const ArgumentWrapper& arg30 = ArgumentWrapper(), + const ArgumentWrapper& arg31 = ArgumentWrapper(), + const ArgumentWrapper& arg32 = ArgumentWrapper(), + const ArgumentWrapper& arg33 = ArgumentWrapper()) + { + int current_arg_index = 0; +#define FAKE_VARARG_HANDLE_ARG(arg) \ + do { \ + if(arg.pointer != NULL) { \ + opencl_assert(clSetKernelArg( \ + kernel, \ + start_argument_index + current_arg_index, \ + arg.size, arg.pointer)); \ + ++current_arg_index; \ + } \ + else { \ + return current_arg_index; \ + } \ + } while(false) + FAKE_VARARG_HANDLE_ARG(arg1); + FAKE_VARARG_HANDLE_ARG(arg2); + FAKE_VARARG_HANDLE_ARG(arg3); + FAKE_VARARG_HANDLE_ARG(arg4); + FAKE_VARARG_HANDLE_ARG(arg5); + FAKE_VARARG_HANDLE_ARG(arg6); + FAKE_VARARG_HANDLE_ARG(arg7); + FAKE_VARARG_HANDLE_ARG(arg8); + FAKE_VARARG_HANDLE_ARG(arg9); + FAKE_VARARG_HANDLE_ARG(arg10); + FAKE_VARARG_HANDLE_ARG(arg11); + FAKE_VARARG_HANDLE_ARG(arg12); + FAKE_VARARG_HANDLE_ARG(arg13); + FAKE_VARARG_HANDLE_ARG(arg14); + FAKE_VARARG_HANDLE_ARG(arg15); + FAKE_VARARG_HANDLE_ARG(arg16); + FAKE_VARARG_HANDLE_ARG(arg17); + FAKE_VARARG_HANDLE_ARG(arg18); + FAKE_VARARG_HANDLE_ARG(arg19); + FAKE_VARARG_HANDLE_ARG(arg20); + FAKE_VARARG_HANDLE_ARG(arg21); + FAKE_VARARG_HANDLE_ARG(arg22); + FAKE_VARARG_HANDLE_ARG(arg23); + FAKE_VARARG_HANDLE_ARG(arg24); + FAKE_VARARG_HANDLE_ARG(arg25); + FAKE_VARARG_HANDLE_ARG(arg26); + FAKE_VARARG_HANDLE_ARG(arg27); + FAKE_VARARG_HANDLE_ARG(arg28); + FAKE_VARARG_HANDLE_ARG(arg29); + FAKE_VARARG_HANDLE_ARG(arg30); + FAKE_VARARG_HANDLE_ARG(arg31); + FAKE_VARARG_HANDLE_ARG(arg32); + FAKE_VARARG_HANDLE_ARG(arg33); +#undef FAKE_VARARG_HANDLE_ARG + return current_arg_index; + } + + inline void release_kernel_safe(cl_kernel kernel) + { + if(kernel) { + clReleaseKernel(kernel); + } + } + + inline void release_mem_object_safe(cl_mem mem) + { + if(mem != NULL) { + clReleaseMemObject(mem); + } + } + + inline void release_program_safe(cl_program program) + { + if(program) { + clReleaseProgram(program); + } + } +}; + +class OpenCLDeviceMegaKernel : public OpenCLDeviceBase +{ +public: + cl_kernel ckPathTraceKernel; + cl_program path_trace_program; + + OpenCLDeviceMegaKernel(DeviceInfo& info, Stats &stats, bool background_) + : OpenCLDeviceBase(info, stats, background_) + { + ckPathTraceKernel = NULL; + path_trace_program = NULL; + } + + bool load_kernels(const DeviceRequestedFeatures& requested_features) + { + /* Get Shader, bake and film convert kernels. + * It'll also do verification of OpenCL actually initialized. + */ + if(!OpenCLDeviceBase::load_kernels(requested_features)) { + return false; + } + + /* Try to use cached kernel. */ + thread_scoped_lock cache_locker; + path_trace_program = OpenCLCache::get_program(cpPlatform, + cdDevice, + OpenCLCache::OCL_DEV_MEGAKERNEL_PROGRAM, + cache_locker); + + if(!path_trace_program) { + /* Verify we have right opencl version. */ + if(!opencl_version_check()) + return false; + + /* Calculate md5 hash to detect changes. */ + string kernel_path = path_get("kernel"); + string kernel_md5 = path_files_md5_hash(kernel_path); + string custom_kernel_build_options = "-D__COMPILE_ONLY_MEGAKERNEL__ "; + string device_md5 = device_md5_hash(custom_kernel_build_options); + + /* Path to cached binary. */ + string clbin = string_printf("cycles_kernel_%s_%s.clbin", + device_md5.c_str(), + kernel_md5.c_str()); + clbin = path_user_get(path_join("cache", clbin)); + + /* Path to preprocessed source for debugging. */ + string clsrc, *debug_src = NULL; + if(opencl_kernel_use_debug()) { + clsrc = string_printf("cycles_kernel_%s_%s.cl", + device_md5.c_str(), + kernel_md5.c_str()); + clsrc = path_user_get(path_join("cache", clsrc)); + debug_src = &clsrc; + } + + /* If exists already, try use it. */ + if(path_exists(clbin) && load_binary(kernel_path, + clbin, + custom_kernel_build_options, + &path_trace_program, + debug_src)) { + /* Kernel loaded from binary, nothing to do. */ + } + else { + string init_kernel_source = "#include \"kernel.cl\" // " + + kernel_md5 + "\n"; + /* If does not exist or loading binary failed, compile kernel. */ + if(!compile_kernel(kernel_path, + init_kernel_source, + custom_kernel_build_options, + &path_trace_program, + debug_src)) + { + return false; + } + /* Save binary for reuse. */ + if(!save_binary(&path_trace_program, clbin)) { + return false; + } + } + /* Cache the program. */ + OpenCLCache::store_program(cpPlatform, + cdDevice, + path_trace_program, + OpenCLCache::OCL_DEV_MEGAKERNEL_PROGRAM, + cache_locker); + } + + /* Find kernels. */ + ckPathTraceKernel = clCreateKernel(path_trace_program, + "kernel_ocl_path_trace", + &ciErr); + if(opencl_error(ciErr)) + return false; + return true; + } + + ~OpenCLDeviceMegaKernel() + { + task_pool.stop(); + release_kernel_safe(ckPathTraceKernel); + release_program_safe(path_trace_program); + } + + void path_trace(RenderTile& rtile, int sample) + { + /* Cast arguments to cl types. */ + cl_mem d_data = CL_MEM_PTR(const_mem_map["__data"]->device_pointer); + cl_mem d_buffer = CL_MEM_PTR(rtile.buffer); + cl_mem d_rng_state = CL_MEM_PTR(rtile.rng_state); + cl_int d_x = rtile.x; + cl_int d_y = rtile.y; + cl_int d_w = rtile.w; + cl_int d_h = rtile.h; + cl_int d_offset = rtile.offset; + cl_int d_stride = rtile.stride; + + /* Sample arguments. */ + cl_int d_sample = sample; + cl_uint narg = 0; + + /* TODO : Make the kernel launch similar to Cuda. */ + KERNEL_APPEND_ARG(ckPathTraceKernel, d_data); + KERNEL_APPEND_ARG(ckPathTraceKernel, d_buffer); + KERNEL_APPEND_ARG(ckPathTraceKernel, d_rng_state); + +#define KERNEL_TEX(type, ttype, name) \ + set_kernel_arg_mem(ckPathTraceKernel, &narg, #name); +#include "kernel_textures.h" +#undef KERNEL_TEX + + KERNEL_APPEND_ARG(ckPathTraceKernel, d_sample); + KERNEL_APPEND_ARG(ckPathTraceKernel, d_x); + KERNEL_APPEND_ARG(ckPathTraceKernel, d_y); + KERNEL_APPEND_ARG(ckPathTraceKernel, d_w); + KERNEL_APPEND_ARG(ckPathTraceKernel, d_h); + KERNEL_APPEND_ARG(ckPathTraceKernel, d_offset); + KERNEL_APPEND_ARG(ckPathTraceKernel, d_stride); + + enqueue_kernel(ckPathTraceKernel, d_w, d_h); + } + void thread_run(DeviceTask *task) { if(task->type == DeviceTask::FILM_CONVERT) { @@ -1064,8 +1394,7 @@ public: } else if(task->type == DeviceTask::PATH_TRACE) { RenderTile tile; - - /* keep rendering tiles until done */ + /* Keep rendering tiles until done. */ while(task->acquire_tile(this, tile)) { int start_sample = tile.start_sample; int end_sample = tile.start_sample + tile.num_samples; @@ -1083,47 +1412,1908 @@ public: task->update_progress(&tile); } + /* Complete kernel execution before release tile */ + /* This helps in multi-device render; + * The device that reaches the critical-section function + * release_tile waits (stalling other devices from entering + * release_tile) for all kernels to complete. If device1 (a + * slow-render device) reaches release_tile first then it would + * stall device2 (a fast-render device) from proceeding to render + * next tile. + */ + clFinish(cqCommandQueue); + task->release_tile(tile); } } } +}; - class OpenCLDeviceTask : public DeviceTask { - public: - OpenCLDeviceTask(OpenCLDevice *device, DeviceTask& task) - : DeviceTask(task) +/* TODO(sergey): This is to keep tile split on OpenCL level working + * for now, since withotu this viewport render does not work as it + * should. + * + * Ideally it'll be done on the higher level, but we need to get ready + * for merge rather soon, so let's keep split logic private here in + * the file. + */ +class SplitRenderTile : public RenderTile { +public: + SplitRenderTile() + : RenderTile(), + buffer_offset_x(0), + buffer_offset_y(0), + rng_state_offset_x(0), + rng_state_offset_y(0), + buffer_rng_state_stride(0) {} + + explicit SplitRenderTile(RenderTile& tile) + : RenderTile(), + buffer_offset_x(0), + buffer_offset_y(0), + rng_state_offset_x(0), + rng_state_offset_y(0), + buffer_rng_state_stride(0) + { + x = tile.x; + y = tile.y; + w = tile.w; + h = tile.h; + start_sample = tile.start_sample; + num_samples = tile.num_samples; + sample = tile.sample; + resolution = tile.resolution; + offset = tile.offset; + stride = tile.stride; + buffer = tile.buffer; + rng_state = tile.rng_state; + buffers = tile.buffers; + } + + /* Split kernel is device global memory constained; + * hence split kernel cant render big tile size's in + * one go. If the user sets a big tile size (big tile size + * is a term relative to the available device global memory), + * we split the tile further and then call path_trace on + * each of those split tiles. The following variables declared, + * assist in achieving that purpose + */ + int buffer_offset_x; + int buffer_offset_y; + int rng_state_offset_x; + int rng_state_offset_y; + int buffer_rng_state_stride; +}; + +/* OpenCLDeviceSplitKernel's declaration/definition. */ +class OpenCLDeviceSplitKernel : public OpenCLDeviceBase +{ +public: + /* Kernel declaration. */ + cl_kernel ckPathTraceKernel_data_init; + cl_kernel ckPathTraceKernel_scene_intersect; + cl_kernel ckPathTraceKernel_lamp_emission; + cl_kernel ckPathTraceKernel_queue_enqueue; + cl_kernel ckPathTraceKernel_background_buffer_update; + cl_kernel ckPathTraceKernel_shader_lighting; + cl_kernel ckPathTraceKernel_holdout_emission_blurring_pathtermination_ao; + cl_kernel ckPathTraceKernel_direct_lighting; + cl_kernel ckPathTraceKernel_shadow_blocked_direct_lighting; + cl_kernel ckPathTraceKernel_setup_next_iteration; + cl_kernel ckPathTraceKernel_sum_all_radiance; + + /* cl_program declaration. */ + cl_program data_init_program; + cl_program scene_intersect_program; + cl_program lamp_emission_program; + cl_program queue_enqueue_program; + cl_program background_buffer_update_program; + cl_program shader_eval_program; + cl_program holdout_emission_blurring_termination_ao_program; + cl_program direct_lighting_program; + cl_program shadow_blocked_program; + cl_program next_iteration_setup_program; + cl_program sum_all_radiance_program; + + /* Global memory variables [porting]; These memory is used for + * co-operation between different kernels; Data written by one + * kernel will be avaible to another kernel via this global + * memory. + */ + cl_mem rng_coop; + cl_mem throughput_coop; + cl_mem L_transparent_coop; + cl_mem PathRadiance_coop; + cl_mem Ray_coop; + cl_mem PathState_coop; + cl_mem Intersection_coop; + cl_mem kgbuffer; /* KernelGlobals buffer. */ + + /* Global buffers for ShaderData. */ + cl_mem sd; /* ShaderData used in the main path-iteration loop. */ + cl_mem sd_DL_shadow; /* ShaderData used in Direct Lighting and + * shadow_blocked kernel. + */ + + /* Global buffers of each member of ShaderData. */ + cl_mem P_sd; + cl_mem P_sd_DL_shadow; + cl_mem N_sd; + cl_mem N_sd_DL_shadow; + cl_mem Ng_sd; + cl_mem Ng_sd_DL_shadow; + cl_mem I_sd; + cl_mem I_sd_DL_shadow; + cl_mem shader_sd; + cl_mem shader_sd_DL_shadow; + cl_mem flag_sd; + cl_mem flag_sd_DL_shadow; + cl_mem prim_sd; + cl_mem prim_sd_DL_shadow; + cl_mem type_sd; + cl_mem type_sd_DL_shadow; + cl_mem u_sd; + cl_mem u_sd_DL_shadow; + cl_mem v_sd; + cl_mem v_sd_DL_shadow; + cl_mem object_sd; + cl_mem object_sd_DL_shadow; + cl_mem time_sd; + cl_mem time_sd_DL_shadow; + cl_mem ray_length_sd; + cl_mem ray_length_sd_DL_shadow; + cl_mem ray_depth_sd; + cl_mem ray_depth_sd_DL_shadow; + cl_mem transparent_depth_sd; + cl_mem transparent_depth_sd_DL_shadow; +#ifdef __RAY_DIFFERENTIALS__ + cl_mem dP_sd, dI_sd; + cl_mem dP_sd_DL_shadow, dI_sd_DL_shadow; + cl_mem du_sd, dv_sd; + cl_mem du_sd_DL_shadow, dv_sd_DL_shadow; +#endif +#ifdef __DPDU__ + cl_mem dPdu_sd, dPdv_sd; + cl_mem dPdu_sd_DL_shadow, dPdv_sd_DL_shadow; +#endif + cl_mem closure_sd; + cl_mem closure_sd_DL_shadow; + cl_mem num_closure_sd; + cl_mem num_closure_sd_DL_shadow; + cl_mem randb_closure_sd; + cl_mem randb_closure_sd_DL_shadow; + cl_mem ray_P_sd; + cl_mem ray_P_sd_DL_shadow; + cl_mem ray_dP_sd; + cl_mem ray_dP_sd_DL_shadow; + + /* Global memory required for shadow blocked and accum_radiance. */ + cl_mem BSDFEval_coop; + cl_mem ISLamp_coop; + cl_mem LightRay_coop; + cl_mem AOAlpha_coop; + cl_mem AOBSDF_coop; + cl_mem AOLightRay_coop; + cl_mem Intersection_coop_AO; + cl_mem Intersection_coop_DL; + +#ifdef WITH_CYCLES_DEBUG + /* DebugData memory */ + cl_mem debugdata_coop; +#endif + + /* Global state array that tracks ray state. */ + cl_mem ray_state; + + /* Per sample buffers. */ + cl_mem per_sample_output_buffers; + + /* Denotes which sample each ray is being processed for. */ + cl_mem work_array; + + /* Queue */ + cl_mem Queue_data; /* Array of size queuesize * num_queues * sizeof(int). */ + cl_mem Queue_index; /* Array of size num_queues * sizeof(int); + * Tracks the size of each queue. + */ + + /* Flag to make sceneintersect and lampemission kernel use queues. */ + cl_mem use_queues_flag; + + /* Required-memory size. */ + size_t throughput_size; + size_t L_transparent_size; + size_t rayState_size; + size_t hostRayState_size; + size_t work_element_size; + size_t ISLamp_size; + + /* Sizes of memory required for shadow blocked function. */ + size_t AOAlpha_size; + size_t AOBSDF_size; + + /* Amount of memory in output buffer associated with one pixel/thread. */ + size_t per_thread_output_buffer_size; + + /* Total allocatable available device memory. */ + size_t total_allocatable_memory; + + /* host version of ray_state; Used in checking host path-iteration + * termination. + */ + char *hostRayStateArray; + + /* Number of path-iterations to be done in one shot. */ + unsigned int PathIteration_times; + +#ifdef __WORK_STEALING__ + /* Work pool with respect to each work group. */ + cl_mem work_pool_wgs; + + /* Denotes the maximum work groups possible w.r.t. current tile size. */ + unsigned int max_work_groups; +#endif + + /* clos_max value for which the kernels have been loaded currently. */ + int current_clos_max; + + /* Marked True in constructor and marked false at the end of path_trace(). */ + bool first_tile; + + OpenCLDeviceSplitKernel(DeviceInfo& info, Stats &stats, bool background_) + : OpenCLDeviceBase(info, stats, background_) + { + + info.use_split_kernel = true; + background = background_; + + /* Initialize kernels. */ + ckPathTraceKernel_data_init = NULL; + ckPathTraceKernel_scene_intersect = NULL; + ckPathTraceKernel_lamp_emission = NULL; + ckPathTraceKernel_background_buffer_update = NULL; + ckPathTraceKernel_shader_lighting = NULL; + ckPathTraceKernel_holdout_emission_blurring_pathtermination_ao = NULL; + ckPathTraceKernel_direct_lighting = NULL; + ckPathTraceKernel_shadow_blocked_direct_lighting = NULL; + ckPathTraceKernel_setup_next_iteration = NULL; + ckPathTraceKernel_sum_all_radiance = NULL; + ckPathTraceKernel_queue_enqueue = NULL; + + /* Initialize program. */ + data_init_program = NULL; + scene_intersect_program = NULL; + lamp_emission_program = NULL; + queue_enqueue_program = NULL; + background_buffer_update_program = NULL; + shader_eval_program = NULL; + holdout_emission_blurring_termination_ao_program = NULL; + direct_lighting_program = NULL; + shadow_blocked_program = NULL; + next_iteration_setup_program = NULL; + sum_all_radiance_program = NULL; + + /* Initialize cl_mem variables. */ + kgbuffer = NULL; + sd = NULL; + sd_DL_shadow = NULL; + + P_sd = NULL; + P_sd_DL_shadow = NULL; + N_sd = NULL; + N_sd_DL_shadow = NULL; + Ng_sd = NULL; + Ng_sd_DL_shadow = NULL; + I_sd = NULL; + I_sd_DL_shadow = NULL; + shader_sd = NULL; + shader_sd_DL_shadow = NULL; + flag_sd = NULL; + flag_sd_DL_shadow = NULL; + prim_sd = NULL; + prim_sd_DL_shadow = NULL; + type_sd = NULL; + type_sd_DL_shadow = NULL; + u_sd = NULL; + u_sd_DL_shadow = NULL; + v_sd = NULL; + v_sd_DL_shadow = NULL; + object_sd = NULL; + object_sd_DL_shadow = NULL; + time_sd = NULL; + time_sd_DL_shadow = NULL; + ray_length_sd = NULL; + ray_length_sd_DL_shadow = NULL; + ray_depth_sd = NULL; + ray_depth_sd_DL_shadow = NULL; + transparent_depth_sd = NULL; + transparent_depth_sd_DL_shadow = NULL; +#ifdef __RAY_DIFFERENTIALS__ + dP_sd = NULL; + dI_sd = NULL; + dP_sd_DL_shadow = NULL; + dI_sd_DL_shadow = NULL; + du_sd = NULL; + dv_sd = NULL; + du_sd_DL_shadow = NULL; + dv_sd_DL_shadow = NULL; +#endif +#ifdef __DPDU__ + dPdu_sd = NULL; + dPdv_sd = NULL; + dPdu_sd_DL_shadow = NULL; + dPdv_sd_DL_shadow = NULL; +#endif + closure_sd = NULL; + closure_sd_DL_shadow = NULL; + num_closure_sd = NULL; + num_closure_sd_DL_shadow = NULL; + randb_closure_sd = NULL; + randb_closure_sd_DL_shadow = NULL; + ray_P_sd = NULL; + ray_P_sd_DL_shadow = NULL; + ray_dP_sd = NULL; + ray_dP_sd_DL_shadow = NULL; + + rng_coop = NULL; + throughput_coop = NULL; + L_transparent_coop = NULL; + PathRadiance_coop = NULL; + Ray_coop = NULL; + PathState_coop = NULL; + Intersection_coop = NULL; + ray_state = NULL; + + AOAlpha_coop = NULL; + AOBSDF_coop = NULL; + AOLightRay_coop = NULL; + BSDFEval_coop = NULL; + ISLamp_coop = NULL; + LightRay_coop = NULL; + Intersection_coop_AO = NULL; + Intersection_coop_DL = NULL; + +#ifdef WITH_CYCLES_DEBUG + debugdata_coop = NULL; +#endif + + work_array = NULL; + + /* Queue. */ + Queue_data = NULL; + Queue_index = NULL; + use_queues_flag = NULL; + + per_sample_output_buffers = NULL; + + /* Initialize required memory size. */ + throughput_size = sizeof(float3); + L_transparent_size = sizeof(float); + rayState_size = sizeof(char); + hostRayState_size = sizeof(char); + work_element_size = sizeof(unsigned int); + ISLamp_size = sizeof(int); + + /* Initialize sizes of memory required for shadow blocked function. */ + AOAlpha_size = sizeof(float3); + AOBSDF_size = sizeof(float3); + + per_thread_output_buffer_size = 0; + hostRayStateArray = NULL; + PathIteration_times = PATH_ITER_INC_FACTOR; +#ifdef __WORK_STEALING__ + work_pool_wgs = NULL; + max_work_groups = 0; +#endif + current_clos_max = -1; + first_tile = true; + + /* Get device's maximum memory that can be allocated. */ + ciErr = clGetDeviceInfo(cdDevice, + CL_DEVICE_MAX_MEM_ALLOC_SIZE, + sizeof(size_t), + &total_allocatable_memory, + NULL); + assert(ciErr == CL_SUCCESS); + if(platform_name == "AMD Accelerated Parallel Processing") { + /* This value is tweak-able; AMD platform does not seem to + * give maximum performance when all of CL_DEVICE_MAX_MEM_ALLOC_SIZE + * is considered for further computation. + */ + total_allocatable_memory /= 2; + } + } + + /* TODO(sergey): Seems really close to load_kernel(), + * could it be de-duplicated? + */ + bool load_split_kernel(string kernel_path, + string kernel_init_source, + string clbin, + string custom_kernel_build_options, + cl_program *program) + { + if(!opencl_version_check()) + return false; + + clbin = path_user_get(path_join("cache", clbin)); + + /* Path to preprocessed source for debugging. */ + string *debug_src = NULL; + + /* If exists already, try use it. */ + if(path_exists(clbin) && load_binary(kernel_path, + clbin, + custom_kernel_build_options, + program, + debug_src)) { + /* Kernel loaded from binary. */ + } + else { + /* If does not exist or loading binary failed, compile kernel. */ + if(!compile_kernel(kernel_path, + kernel_init_source, + custom_kernel_build_options, + program)) + { + return false; + } + /* Save binary for reuse. */ + if(!save_binary(program, clbin)) { + return false; + } + } + return true; + } + + /* Split kernel utility functions. */ + size_t get_tex_size(const char *tex_name) + { + cl_mem ptr; + size_t ret_size = 0; + MemMap::iterator i = mem_map.find(tex_name); + if(i != mem_map.end()) { + ptr = CL_MEM_PTR(i->second); + ciErr = clGetMemObjectInfo(ptr, + CL_MEM_SIZE, + sizeof(ret_size), + &ret_size, + NULL); + assert(ciErr == CL_SUCCESS); + } + return ret_size; + } + + size_t get_shader_closure_size(int max_closure) + { + return (sizeof(ShaderClosure)* max_closure); + } + + size_t get_shader_data_size(size_t shader_closure_size) + { + /* ShaderData size without accounting for ShaderClosure array. */ + size_t shader_data_size = + sizeof(ShaderData) - (sizeof(ShaderClosure) * MAX_CLOSURE); + return (shader_data_size + shader_closure_size); + } + + /* Returns size of KernelGlobals structure associated with OpenCL. */ + size_t get_KernelGlobals_size() + { + /* Copy dummy KernelGlobals related to OpenCL from kernel_globals.h to + * fetch its size. + */ + typedef struct KernelGlobals { + ccl_constant KernelData *data; +#define KERNEL_TEX(type, ttype, name) \ + ccl_global type *name; +#include "kernel_textures.h" +#undef KERNEL_TEX + } KernelGlobals; + + return sizeof(KernelGlobals); + } + + /* Returns size of Structure of arrays implementation of. */ + size_t get_shaderdata_soa_size() + { + size_t shader_soa_size = 0; + +#define SD_VAR(type, what) \ + shader_soa_size += sizeof(void *); +#define SD_CLOSURE_VAR(type, what, max_closure) + shader_soa_size += sizeof(void *); + #include "kernel_shaderdata_vars.h" +#undef SD_VAR +#undef SD_CLOSURE_VAR + + return shader_soa_size; + } + + bool load_kernels(const DeviceRequestedFeatures& requested_features) + { + /* If it is an interactive render; we ceil clos_max value to a multiple + * of 5 in order to limit re-compilations. + */ + /* TODO(sergey): Decision about this should be done on higher levels. */ + int max_closure = requested_features.max_closure; + if(!background) { + assert((max_closure != 0) && "clos_max value is 0" ); + max_closure = (((max_closure - 1) / 5) + 1) * 5; + /* clos_max value shouldn't be greater than MAX_CLOSURE. */ + max_closure = (max_closure > MAX_CLOSURE) ? MAX_CLOSURE : max_closure; + if(current_clos_max == max_closure) { + /* Present kernels have been created with the same closure count + * build option. + */ + return true; + } + } + /* Get Shader, bake and film_convert kernels. + * It'll also do verification of OpenCL actually initialized. + */ + if(!OpenCLDeviceBase::load_kernels(requested_features)) { + return false; + } + + string svm_build_options = ""; + string max_closure_build_option = ""; + string compute_device_type_build_option = ""; + + /* Set svm_build_options. */ + svm_build_options += " -D__NODES_MAX_GROUP__=" + + string_printf("%d", requested_features.max_nodes_group); + svm_build_options += " -D__NODES_FEATURES__=" + + string_printf("%d", requested_features.nodes_features); + + /* Set max closure build option. */ + max_closure_build_option += string_printf("-D__MAX_CLOSURE__=%d ", + max_closure); + + /* Set compute device build option. */ + cl_device_type device_type; + ciErr = clGetDeviceInfo(cdDevice, + CL_DEVICE_TYPE, + sizeof(cl_device_type), + &device_type, + NULL); + assert(ciErr == CL_SUCCESS); + if(device_type == CL_DEVICE_TYPE_GPU) { + compute_device_type_build_option = "-D__COMPUTE_DEVICE_GPU__ "; + } + + string kernel_path = path_get("kernel"); + string kernel_md5 = path_files_md5_hash(kernel_path); + string device_md5; + string custom_kernel_build_options; + string kernel_init_source; + string clbin; + + string common_custom_build_options = ""; + common_custom_build_options += "-D__SPLIT_KERNEL__ "; + common_custom_build_options += max_closure_build_option;; +#ifdef __WORK_STEALING__ + common_custom_build_options += "-D__WORK_STEALING__ "; +#endif + +#define LOAD_KERNEL(program, name) \ + do { \ + kernel_init_source = "#include \"kernel_" name ".cl\" // " + \ + kernel_md5 + "\n"; \ + custom_kernel_build_options = common_custom_build_options; \ + device_md5 = device_md5_hash(custom_kernel_build_options); \ + clbin = string_printf("cycles_kernel_%s_%s_" name ".clbin", \ + device_md5.c_str(), kernel_md5.c_str()); \ + if(!load_split_kernel(kernel_path, kernel_init_source, clbin, \ + custom_kernel_build_options, &program)) \ + { \ + return false; \ + } \ + } while(false) + + /* TODO(sergey): If names are unified we can save some more bits of + * code here. + */ + LOAD_KERNEL(data_init_program, "data_init"); + LOAD_KERNEL(scene_intersect_program, "scene_intersect"); + LOAD_KERNEL(lamp_emission_program, "lamp_emission"); + LOAD_KERNEL(queue_enqueue_program, "queue_enqueue"); + LOAD_KERNEL(background_buffer_update_program, "background_buffer_update"); + LOAD_KERNEL(shader_eval_program, "shader_eval"); + LOAD_KERNEL(holdout_emission_blurring_termination_ao_program, + "holdout_emission_blurring_pathtermination_ao"); + LOAD_KERNEL(direct_lighting_program, "direct_lighting"); + LOAD_KERNEL(shadow_blocked_program, "shadow_blocked"); + LOAD_KERNEL(next_iteration_setup_program, "next_iteration_setup"); + LOAD_KERNEL(sum_all_radiance_program, "sum_all_radiance"); + +#undef LOAD_KERNEL + +#define GLUE(a, b) a ## b +#define FIND_KERNEL(kernel, program, function) \ + do { \ + GLUE(ckPathTraceKernel_, kernel) = \ + clCreateKernel(GLUE(program, _program), \ + "kernel_ocl_path_trace_" function, &ciErr); \ + if(opencl_error(ciErr)) { \ + return false; \ + } \ + } while(false) + + FIND_KERNEL(data_init, data_init, "data_initialization"); + FIND_KERNEL(scene_intersect, scene_intersect, "scene_intersect"); + FIND_KERNEL(lamp_emission, lamp_emission, "lamp_emission"); + FIND_KERNEL(queue_enqueue, queue_enqueue, "queue_enqueue"); + FIND_KERNEL(background_buffer_update, background_buffer_update, "background_buffer_update"); + FIND_KERNEL(shader_lighting, shader_eval, "shader_evaluation"); + FIND_KERNEL(holdout_emission_blurring_pathtermination_ao, + holdout_emission_blurring_termination_ao, + "holdout_emission_blurring_pathtermination_ao"); + FIND_KERNEL(direct_lighting, direct_lighting, "direct_lighting"); + FIND_KERNEL(shadow_blocked_direct_lighting, shadow_blocked, "shadow_blocked_direct_lighting"); + FIND_KERNEL(setup_next_iteration, next_iteration_setup, "setup_next_iteration"); + FIND_KERNEL(sum_all_radiance, sum_all_radiance, "sum_all_radiance"); +#undef FIND_KERNEL +#undef GLUE + + current_clos_max = max_closure; + + return true; + } + + ~OpenCLDeviceSplitKernel() + { + task_pool.stop(); + + /* Release kernels */ + release_kernel_safe(ckPathTraceKernel_data_init); + release_kernel_safe(ckPathTraceKernel_scene_intersect); + release_kernel_safe(ckPathTraceKernel_lamp_emission); + release_kernel_safe(ckPathTraceKernel_queue_enqueue); + release_kernel_safe(ckPathTraceKernel_background_buffer_update); + release_kernel_safe(ckPathTraceKernel_shader_lighting); + release_kernel_safe(ckPathTraceKernel_holdout_emission_blurring_pathtermination_ao); + release_kernel_safe(ckPathTraceKernel_direct_lighting); + release_kernel_safe(ckPathTraceKernel_shadow_blocked_direct_lighting); + release_kernel_safe(ckPathTraceKernel_setup_next_iteration); + release_kernel_safe(ckPathTraceKernel_sum_all_radiance); + + /* Release global memory */ + release_mem_object_safe(P_sd); + release_mem_object_safe(P_sd_DL_shadow); + release_mem_object_safe(N_sd); + release_mem_object_safe(N_sd_DL_shadow); + release_mem_object_safe(Ng_sd); + release_mem_object_safe(Ng_sd_DL_shadow); + release_mem_object_safe(I_sd); + release_mem_object_safe(I_sd_DL_shadow); + release_mem_object_safe(shader_sd); + release_mem_object_safe(shader_sd_DL_shadow); + release_mem_object_safe(flag_sd); + release_mem_object_safe(flag_sd_DL_shadow); + release_mem_object_safe(prim_sd); + release_mem_object_safe(prim_sd_DL_shadow); + release_mem_object_safe(type_sd); + release_mem_object_safe(type_sd_DL_shadow); + release_mem_object_safe(u_sd); + release_mem_object_safe(u_sd_DL_shadow); + release_mem_object_safe(v_sd); + release_mem_object_safe(v_sd_DL_shadow); + release_mem_object_safe(object_sd); + release_mem_object_safe(object_sd_DL_shadow); + release_mem_object_safe(time_sd); + release_mem_object_safe(time_sd_DL_shadow); + release_mem_object_safe(ray_length_sd); + release_mem_object_safe(ray_length_sd_DL_shadow); + release_mem_object_safe(ray_depth_sd); + release_mem_object_safe(ray_depth_sd_DL_shadow); + release_mem_object_safe(transparent_depth_sd); + release_mem_object_safe(transparent_depth_sd_DL_shadow); +#ifdef __RAY_DIFFERENTIALS__ + release_mem_object_safe(dP_sd); + release_mem_object_safe(dP_sd_DL_shadow); + release_mem_object_safe(dI_sd); + release_mem_object_safe(dI_sd_DL_shadow); + release_mem_object_safe(du_sd); + release_mem_object_safe(du_sd_DL_shadow); + release_mem_object_safe(dv_sd); + release_mem_object_safe(dv_sd_DL_shadow); +#endif +#ifdef __DPDU__ + release_mem_object_safe(dPdu_sd); + release_mem_object_safe(dPdu_sd_DL_shadow); + release_mem_object_safe(dPdv_sd); + release_mem_object_safe(dPdv_sd_DL_shadow); +#endif + release_mem_object_safe(closure_sd); + release_mem_object_safe(closure_sd_DL_shadow); + release_mem_object_safe(num_closure_sd); + release_mem_object_safe(num_closure_sd_DL_shadow); + release_mem_object_safe(randb_closure_sd); + release_mem_object_safe(randb_closure_sd_DL_shadow); + release_mem_object_safe(ray_P_sd); + release_mem_object_safe(ray_P_sd_DL_shadow); + release_mem_object_safe(ray_dP_sd); + release_mem_object_safe(ray_dP_sd_DL_shadow); + release_mem_object_safe(rng_coop); + release_mem_object_safe(throughput_coop); + release_mem_object_safe(L_transparent_coop); + release_mem_object_safe(PathRadiance_coop); + release_mem_object_safe(Ray_coop); + release_mem_object_safe(PathState_coop); + release_mem_object_safe(Intersection_coop); + release_mem_object_safe(kgbuffer); + release_mem_object_safe(sd); + release_mem_object_safe(sd_DL_shadow); + release_mem_object_safe(ray_state); + release_mem_object_safe(AOAlpha_coop); + release_mem_object_safe(AOBSDF_coop); + release_mem_object_safe(AOLightRay_coop); + release_mem_object_safe(BSDFEval_coop); + release_mem_object_safe(ISLamp_coop); + release_mem_object_safe(LightRay_coop); + release_mem_object_safe(Intersection_coop_AO); + release_mem_object_safe(Intersection_coop_DL); +#ifdef WITH_CYCLES_DEBUG + release_mem_object_safe(debugdata_coop); +#endif + release_mem_object_safe(use_queues_flag); + release_mem_object_safe(Queue_data); + release_mem_object_safe(Queue_index); + release_mem_object_safe(work_array); +#ifdef __WORK_STEALING__ + release_mem_object_safe(work_pool_wgs); +#endif + release_mem_object_safe(per_sample_output_buffers); + + /* Release programs */ + release_program_safe(data_init_program); + release_program_safe(scene_intersect_program); + release_program_safe(lamp_emission_program); + release_program_safe(queue_enqueue_program); + release_program_safe(background_buffer_update_program); + release_program_safe(shader_eval_program); + release_program_safe(holdout_emission_blurring_termination_ao_program); + release_program_safe(direct_lighting_program); + release_program_safe(shadow_blocked_program); + release_program_safe(next_iteration_setup_program); + release_program_safe(sum_all_radiance_program); + + if(hostRayStateArray != NULL) { + free(hostRayStateArray); + } + } + + void path_trace(SplitRenderTile& rtile, int2 max_render_feasible_tile_size) + { + /* cast arguments to cl types */ + cl_mem d_data = CL_MEM_PTR(const_mem_map["__data"]->device_pointer); + cl_mem d_buffer = CL_MEM_PTR(rtile.buffer); + cl_mem d_rng_state = CL_MEM_PTR(rtile.rng_state); + cl_int d_x = rtile.x; + cl_int d_y = rtile.y; + cl_int d_w = rtile.w; + cl_int d_h = rtile.h; + cl_int d_offset = rtile.offset; + cl_int d_stride = rtile.stride; + + /* Make sure that set render feasible tile size is a multiple of local + * work size dimensions. + */ + assert(max_render_feasible_tile_size.x % SPLIT_KERNEL_LOCAL_SIZE_X == 0); + assert(max_render_feasible_tile_size.y % SPLIT_KERNEL_LOCAL_SIZE_Y == 0); + + /* ray_state and hostRayStateArray should be of same size. */ + assert(hostRayState_size == rayState_size); + assert(rayState_size == 1); + + size_t global_size[2]; + size_t local_size[2] = {SPLIT_KERNEL_LOCAL_SIZE_X, + SPLIT_KERNEL_LOCAL_SIZE_Y}; + + /* Set the range of samples to be processed for every ray in + * path-regeneration logic. + */ + cl_int start_sample = rtile.start_sample; + cl_int end_sample = rtile.start_sample + rtile.num_samples; + cl_int num_samples = rtile.num_samples; + +#ifdef __WORK_STEALING__ + global_size[0] = (((d_w - 1) / local_size[0]) + 1) * local_size[0]; + global_size[1] = (((d_h - 1) / local_size[1]) + 1) * local_size[1]; + unsigned int num_parallel_samples = 1; +#else + global_size[1] = (((d_h - 1) / local_size[1]) + 1) * local_size[1]; + unsigned int num_threads = max_render_feasible_tile_size.x * + max_render_feasible_tile_size.y; + unsigned int num_tile_columns_possible = num_threads / global_size[1]; + /* Estimate number of parallel samples that can be + * processed in parallel. + */ + unsigned int num_parallel_samples = min(num_tile_columns_possible / d_w, + rtile.num_samples); + /* Wavefront size in AMD is 64. + * TODO(sergey): What about other platforms? + */ + if(num_parallel_samples >= 64) { + /* TODO(sergey): Could use generic round-up here. */ + num_parallel_samples = (num_parallel_samples / 64) * 64 + } + assert(num_parallel_samples != 0); + + global_size[0] = d_w * num_parallel_samples; +#endif /* __WORK_STEALING__ */ + + assert(global_size[0] * global_size[1] <= + max_render_feasible_tile_size.x * max_render_feasible_tile_size.y); + + /* Allocate all required global memory once. */ + if(first_tile) { + size_t num_global_elements = max_render_feasible_tile_size.x * + max_render_feasible_tile_size.y; + /* TODO(sergey): This will actually over-allocate if + * particular kernel does not support multiclosure. + */ + size_t ShaderClosure_size = get_shader_closure_size(current_clos_max); + +#ifdef __WORK_STEALING__ + /* Calculate max groups */ + size_t max_global_size[2]; + size_t tile_x = max_render_feasible_tile_size.x; + size_t tile_y = max_render_feasible_tile_size.y; + max_global_size[0] = (((tile_x - 1) / local_size[0]) + 1) * local_size[0]; + max_global_size[1] = (((tile_y - 1) / local_size[1]) + 1) * local_size[1]; + max_work_groups = (max_global_size[0] * max_global_size[1]) / + (local_size[0] * local_size[1]); + /* Allocate work_pool_wgs memory. */ + work_pool_wgs = mem_alloc(max_work_groups * sizeof(unsigned int)); +#endif /* __WORK_STEALING__ */ + + /* Allocate queue_index memory only once. */ + Queue_index = mem_alloc(NUM_QUEUES * sizeof(int)); + use_queues_flag = mem_alloc(sizeof(char)); + kgbuffer = mem_alloc(get_KernelGlobals_size()); + + /* Create global buffers for ShaderData. */ + sd = mem_alloc(get_shaderdata_soa_size()); + sd_DL_shadow = mem_alloc(get_shaderdata_soa_size()); + P_sd = mem_alloc(num_global_elements * sizeof(float3)); + P_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3)); + N_sd = mem_alloc(num_global_elements * sizeof(float3)); + N_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3)); + Ng_sd = mem_alloc(num_global_elements * sizeof(float3)); + Ng_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3)); + I_sd = mem_alloc(num_global_elements * sizeof(float3)); + I_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3)); + shader_sd = mem_alloc(num_global_elements * sizeof(int)); + shader_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int)); + flag_sd = mem_alloc(num_global_elements * sizeof(int)); + flag_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int)); + prim_sd = mem_alloc(num_global_elements * sizeof(int)); + prim_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int)); + type_sd = mem_alloc(num_global_elements * sizeof(int)); + type_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int)); + u_sd = mem_alloc(num_global_elements * sizeof(float)); + u_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float)); + v_sd = mem_alloc(num_global_elements * sizeof(float)); + v_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float)); + object_sd = mem_alloc(num_global_elements * sizeof(int)); + object_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int)); + time_sd = mem_alloc(num_global_elements * sizeof(float)); + time_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float)); + ray_length_sd = mem_alloc(num_global_elements * sizeof(float)); + ray_length_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float)); + ray_depth_sd = mem_alloc(num_global_elements * sizeof(int)); + ray_depth_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int)); + transparent_depth_sd = mem_alloc(num_global_elements * sizeof(int)); + transparent_depth_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int)); + +#ifdef __RAY_DIFFERENTIALS__ + dP_sd = mem_alloc(num_global_elements * sizeof(differential3)); + dP_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(differential3)); + dI_sd = mem_alloc(num_global_elements * sizeof(differential3)); + dI_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(differential3)); + du_sd = mem_alloc(num_global_elements * sizeof(differential)); + du_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(differential)); + dv_sd = mem_alloc(num_global_elements * sizeof(differential)); + dv_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(differential)); +#endif + +#ifdef __DPDU__ + dPdu_sd = mem_alloc(num_global_elements * sizeof(float3)); + dPdu_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3)); + dPdv_sd = mem_alloc(num_global_elements * sizeof(float3)); + dPdv_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3)); +#endif + closure_sd = mem_alloc(num_global_elements * ShaderClosure_size); + closure_sd_DL_shadow = mem_alloc(num_global_elements * 2 * ShaderClosure_size); + num_closure_sd = mem_alloc(num_global_elements * sizeof(int)); + num_closure_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int)); + randb_closure_sd = mem_alloc(num_global_elements * sizeof(float)); + randb_closure_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float)); + ray_P_sd = mem_alloc(num_global_elements * sizeof(float3)); + ray_P_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3)); + ray_dP_sd = mem_alloc(num_global_elements * sizeof(differential3)); + ray_dP_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(differential3)); + + /* Creation of global memory buffers which are shared among + * the kernels. + */ + rng_coop = mem_alloc(num_global_elements * sizeof(RNG)); + throughput_coop = mem_alloc(num_global_elements * throughput_size); + L_transparent_coop = mem_alloc(num_global_elements * L_transparent_size); + PathRadiance_coop = mem_alloc(num_global_elements * sizeof(PathRadiance)); + Ray_coop = mem_alloc(num_global_elements * sizeof(Ray)); + PathState_coop = mem_alloc(num_global_elements * sizeof(PathState)); + Intersection_coop = mem_alloc(num_global_elements * sizeof(Intersection)); + AOAlpha_coop = mem_alloc(num_global_elements * AOAlpha_size); + AOBSDF_coop = mem_alloc(num_global_elements * AOBSDF_size); + AOLightRay_coop = mem_alloc(num_global_elements * sizeof(Ray)); + BSDFEval_coop = mem_alloc(num_global_elements * sizeof(BsdfEval)); + ISLamp_coop = mem_alloc(num_global_elements * ISLamp_size); + LightRay_coop = mem_alloc(num_global_elements * sizeof(Ray)); + Intersection_coop_AO = mem_alloc(num_global_elements * sizeof(Intersection)); + Intersection_coop_DL = mem_alloc(num_global_elements * sizeof(Intersection)); + +#ifdef WITH_CYCLES_DEBUG + debugdata_coop = mem_alloc(num_global_elements * sizeof(DebugData)); +#endif + + ray_state = mem_alloc(num_global_elements * rayState_size); + + hostRayStateArray = (char *)calloc(num_global_elements, hostRayState_size); + assert(hostRayStateArray != NULL && "Can't create hostRayStateArray memory"); + + Queue_data = mem_alloc(num_global_elements * (NUM_QUEUES * sizeof(int)+sizeof(int))); + work_array = mem_alloc(num_global_elements * work_element_size); + per_sample_output_buffers = mem_alloc(num_global_elements * + per_thread_output_buffer_size); + } + + cl_int dQueue_size = global_size[0] * global_size[1]; + cl_int total_num_rays = global_size[0] * global_size[1]; + + cl_uint start_arg_index = + kernel_set_args(ckPathTraceKernel_data_init, + 0, + kgbuffer, + sd, + sd_DL_shadow, + P_sd, + P_sd_DL_shadow, + N_sd, + N_sd_DL_shadow, + Ng_sd, + Ng_sd_DL_shadow, + I_sd, + I_sd_DL_shadow, + shader_sd, + shader_sd_DL_shadow, + flag_sd, + flag_sd_DL_shadow, + prim_sd, + prim_sd_DL_shadow, + type_sd, + type_sd_DL_shadow, + u_sd, + u_sd_DL_shadow, + v_sd, + v_sd_DL_shadow, + object_sd, + object_sd_DL_shadow, + time_sd, + time_sd_DL_shadow, + ray_length_sd, + ray_length_sd_DL_shadow, + ray_depth_sd, + ray_depth_sd_DL_shadow, + transparent_depth_sd, + transparent_depth_sd_DL_shadow); + + start_arg_index += + kernel_set_args(ckPathTraceKernel_data_init, +#ifdef __RAY_DIFFERENTIALS__ + start_arg_index, + dP_sd, + dP_sd_DL_shadow, + dI_sd, + dI_sd_DL_shadow, + du_sd, + du_sd_DL_shadow, + dv_sd, + dv_sd_DL_shadow, +#endif +#ifdef __DPDU__ + dPdu_sd, + dPdu_sd_DL_shadow, + dPdv_sd, + dPdv_sd_DL_shadow, +#endif + closure_sd, + closure_sd_DL_shadow, + num_closure_sd, + num_closure_sd_DL_shadow, + randb_closure_sd, + randb_closure_sd_DL_shadow, + ray_P_sd, + ray_P_sd_DL_shadow, + ray_dP_sd, + ray_dP_sd_DL_shadow, + d_data, + per_sample_output_buffers, + d_rng_state, + rng_coop, + throughput_coop, + L_transparent_coop, + PathRadiance_coop, + Ray_coop, + PathState_coop, + ray_state); + +/* TODO(segrey): Avoid map lookup here. */ +#define KERNEL_TEX(type, ttype, name) \ + set_kernel_arg_mem(ckPathTraceKernel_data_init, &start_arg_index, #name); +#include "kernel_textures.h" +#undef KERNEL_TEX + + start_arg_index += + kernel_set_args(ckPathTraceKernel_data_init, + start_arg_index, + start_sample, + d_x, + d_y, + d_w, + d_h, + d_offset, + d_stride, + rtile.rng_state_offset_x, + rtile.rng_state_offset_y, + rtile.buffer_rng_state_stride, + Queue_data, + Queue_index, + dQueue_size, + use_queues_flag, + work_array, +#ifdef __WORK_STEALING__ + work_pool_wgs, + num_samples, +#endif +#ifdef WITH_CYCLES_DEBUG + debugdata_coop, +#endif + num_parallel_samples); + + kernel_set_args(ckPathTraceKernel_scene_intersect, + 0, + kgbuffer, + d_data, + rng_coop, + Ray_coop, + PathState_coop, + Intersection_coop, + ray_state, + d_w, + d_h, + Queue_data, + Queue_index, + dQueue_size, + use_queues_flag, +#ifdef WITH_CYCLES_DEBUG + debugdata_coop, +#endif + num_parallel_samples); + + kernel_set_args(ckPathTraceKernel_lamp_emission, + 0, + kgbuffer, + d_data, + sd, + throughput_coop, + PathRadiance_coop, + Ray_coop, + PathState_coop, + Intersection_coop, + ray_state, + d_w, + d_h, + Queue_data, + Queue_index, + dQueue_size, + use_queues_flag, + num_parallel_samples); + + kernel_set_args(ckPathTraceKernel_queue_enqueue, + 0, + Queue_data, + Queue_index, + ray_state, + dQueue_size); + + kernel_set_args(ckPathTraceKernel_background_buffer_update, + 0, + kgbuffer, + d_data, + sd, + per_sample_output_buffers, + d_rng_state, + rng_coop, + throughput_coop, + PathRadiance_coop, + Ray_coop, + PathState_coop, + L_transparent_coop, + ray_state, + d_w, + d_h, + d_x, + d_y, + d_stride, + rtile.rng_state_offset_x, + rtile.rng_state_offset_y, + rtile.buffer_rng_state_stride, + work_array, + Queue_data, + Queue_index, + dQueue_size, + end_sample, + start_sample, +#ifdef __WORK_STEALING__ + work_pool_wgs, + num_samples, +#endif +#ifdef WITH_CYCLES_DEBUG + debugdata_coop, +#endif + num_parallel_samples); + + kernel_set_args(ckPathTraceKernel_shader_lighting, + 0, + kgbuffer, + d_data, + sd, + rng_coop, + Ray_coop, + PathState_coop, + Intersection_coop, + ray_state, + Queue_data, + Queue_index, + dQueue_size); + + kernel_set_args(ckPathTraceKernel_holdout_emission_blurring_pathtermination_ao, + 0, + kgbuffer, + d_data, + sd, + per_sample_output_buffers, + rng_coop, + throughput_coop, + L_transparent_coop, + PathRadiance_coop, + PathState_coop, + Intersection_coop, + AOAlpha_coop, + AOBSDF_coop, + AOLightRay_coop, + d_w, + d_h, + d_x, + d_y, + d_stride, + ray_state, + work_array, + Queue_data, + Queue_index, + dQueue_size, +#ifdef __WORK_STEALING__ + start_sample, +#endif + num_parallel_samples); + + kernel_set_args(ckPathTraceKernel_direct_lighting, + 0, + kgbuffer, + d_data, + sd, + sd_DL_shadow, + rng_coop, + PathState_coop, + ISLamp_coop, + LightRay_coop, + BSDFEval_coop, + ray_state, + Queue_data, + Queue_index, + dQueue_size); + + kernel_set_args(ckPathTraceKernel_shadow_blocked_direct_lighting, + 0, + kgbuffer, + d_data, + sd_DL_shadow, + PathState_coop, + LightRay_coop, + AOLightRay_coop, + Intersection_coop_AO, + Intersection_coop_DL, + ray_state, + Queue_data, + Queue_index, + dQueue_size, + total_num_rays); + + kernel_set_args(ckPathTraceKernel_setup_next_iteration, + 0, + kgbuffer, + d_data, + sd, + rng_coop, + throughput_coop, + PathRadiance_coop, + Ray_coop, + PathState_coop, + LightRay_coop, + ISLamp_coop, + BSDFEval_coop, + AOLightRay_coop, + AOBSDF_coop, + AOAlpha_coop, + ray_state, + Queue_data, + Queue_index, + dQueue_size, + use_queues_flag); + + kernel_set_args(ckPathTraceKernel_sum_all_radiance, + 0, + d_data, + d_buffer, + per_sample_output_buffers, + num_parallel_samples, + d_w, + d_h, + d_stride, + rtile.buffer_offset_x, + rtile.buffer_offset_y, + rtile.buffer_rng_state_stride, + start_sample); + + /* Macro for Enqueuing split kernels. */ +#define GLUE(a, b) a ## b +#define ENQUEUE_SPLIT_KERNEL(kernelName, globalSize, localSize) \ + opencl_assert(clEnqueueNDRangeKernel(cqCommandQueue, \ + GLUE(ckPathTraceKernel_, \ + kernelName), \ + 2, \ + NULL, \ + globalSize, \ + localSize, \ + 0, \ + NULL, \ + NULL)) + + /* Enqueue ckPathTraceKernel_data_init kernel. */ + ENQUEUE_SPLIT_KERNEL(data_init, global_size, local_size); + bool activeRaysAvailable = true; + + /* Record number of time host intervention has been made */ + unsigned int numHostIntervention = 0; + unsigned int numNextPathIterTimes = PathIteration_times; + while(activeRaysAvailable) { + /* Twice the global work size of other kernels for + * ckPathTraceKernel_shadow_blocked_direct_lighting. */ + size_t global_size_shadow_blocked[2]; + global_size_shadow_blocked[0] = global_size[0] * 2; + global_size_shadow_blocked[1] = global_size[1]; + + /* Do path-iteration in host [Enqueue Path-iteration kernels. */ + for(int PathIter = 0; PathIter < PathIteration_times; PathIter++) { + ENQUEUE_SPLIT_KERNEL(scene_intersect, global_size, local_size); + ENQUEUE_SPLIT_KERNEL(lamp_emission, global_size, local_size); + ENQUEUE_SPLIT_KERNEL(queue_enqueue, global_size, local_size); + ENQUEUE_SPLIT_KERNEL(background_buffer_update, global_size, local_size); + ENQUEUE_SPLIT_KERNEL(shader_lighting, global_size, local_size); + ENQUEUE_SPLIT_KERNEL(holdout_emission_blurring_pathtermination_ao, global_size, local_size); + ENQUEUE_SPLIT_KERNEL(direct_lighting, global_size, local_size); + ENQUEUE_SPLIT_KERNEL(shadow_blocked_direct_lighting, global_size_shadow_blocked, local_size); + ENQUEUE_SPLIT_KERNEL(setup_next_iteration, global_size, local_size); + } + + /* Read ray-state into Host memory to decide if we should exit + * path-iteration in host. + */ + ciErr = clEnqueueReadBuffer(cqCommandQueue, + ray_state, + CL_TRUE, + 0, + global_size[0] * global_size[1] * sizeof(char), + hostRayStateArray, + 0, + NULL, + NULL); + assert(ciErr == CL_SUCCESS); + + activeRaysAvailable = false; + + for(int rayStateIter = 0; + rayStateIter < global_size[0] * global_size[1]; + ++rayStateIter) + { + if(int8_t(hostRayStateArray[rayStateIter]) != RAY_INACTIVE) { + /* Not all rays are RAY_INACTIVE. */ + activeRaysAvailable = true; + break; + } + } + + if(activeRaysAvailable) { + numHostIntervention++; + PathIteration_times = PATH_ITER_INC_FACTOR; + /* Host intervention done before all rays become RAY_INACTIVE; + * Set do more initial iterations for the next tile. + */ + numNextPathIterTimes += PATH_ITER_INC_FACTOR; + } + } + + /* Execute SumALLRadiance kernel to accumulate radiance calculated in + * per_sample_output_buffers into RenderTile's output buffer. + */ + size_t sum_all_radiance_local_size[2] = {16, 16}; + size_t sum_all_radiance_global_size[2]; + sum_all_radiance_global_size[0] = + (((d_w - 1) / sum_all_radiance_local_size[0]) + 1) * + sum_all_radiance_local_size[0]; + sum_all_radiance_global_size[1] = + (((d_h - 1) / sum_all_radiance_local_size[1]) + 1) * + sum_all_radiance_local_size[1]; + ENQUEUE_SPLIT_KERNEL(sum_all_radiance, + sum_all_radiance_global_size, + sum_all_radiance_local_size); + +#undef ENQUEUE_SPLIT_KERNEL +#undef GLUE + + if(numHostIntervention == 0) { + /* This means that we are executing kernel more than required + * Must avoid this for the next sample/tile. + */ + PathIteration_times = ((numNextPathIterTimes - PATH_ITER_INC_FACTOR) <= 0) ? + PATH_ITER_INC_FACTOR : numNextPathIterTimes - PATH_ITER_INC_FACTOR; + } + else { + /* Number of path-iterations done for this tile is set as + * Initial path-iteration times for the next tile + */ + PathIteration_times = numNextPathIterTimes; + } + + first_tile = false; + } + + /* Calculates the amount of memory that has to be always + * allocated in order for the split kernel to function. + * This memory is tile/scene-property invariant (meaning, + * the value returned by this function does not depend + * on the user set tile size or scene properties. + */ + size_t get_invariable_mem_allocated() + { + size_t total_invariable_mem_allocated = 0; + size_t KernelGlobals_size = 0; + size_t ShaderData_SOA_size = 0; + + KernelGlobals_size = get_KernelGlobals_size(); + ShaderData_SOA_size = get_shaderdata_soa_size(); + + total_invariable_mem_allocated += KernelGlobals_size; /* KernelGlobals size */ + total_invariable_mem_allocated += NUM_QUEUES * sizeof(unsigned int); /* Queue index size */ + total_invariable_mem_allocated += sizeof(char); /* use_queues_flag size */ + total_invariable_mem_allocated += ShaderData_SOA_size; /* sd size */ + total_invariable_mem_allocated += ShaderData_SOA_size; /* sd_DL_shadow size */ + + return total_invariable_mem_allocated; + } + + /* Calculate the memory that has-to-be/has-been allocated for + * the split kernel to function. + */ + size_t get_tile_specific_mem_allocated(const int2 tile_size) + { + size_t tile_specific_mem_allocated = 0; + + /* Get required tile info */ + unsigned int user_set_tile_w = tile_size.x; + unsigned int user_set_tile_h = tile_size.y; + +#ifdef __WORK_STEALING__ + /* Calculate memory to be allocated for work_pools in + * case of work_stealing. + */ + size_t max_global_size[2]; + size_t max_num_work_pools = 0; + max_global_size[0] = + (((user_set_tile_w - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) * + SPLIT_KERNEL_LOCAL_SIZE_X; + max_global_size[1] = + (((user_set_tile_h - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) * + SPLIT_KERNEL_LOCAL_SIZE_Y; + max_num_work_pools = + (max_global_size[0] * max_global_size[1]) / + (SPLIT_KERNEL_LOCAL_SIZE_X * SPLIT_KERNEL_LOCAL_SIZE_Y); + tile_specific_mem_allocated += max_num_work_pools * sizeof(unsigned int); +#endif + + tile_specific_mem_allocated += + user_set_tile_w * user_set_tile_h * per_thread_output_buffer_size; + tile_specific_mem_allocated += + user_set_tile_w * user_set_tile_h * sizeof(RNG); + + return tile_specific_mem_allocated; + } + + /* Calculates the texture memories and KernelData (d_data) memory + * that has been allocated. + */ + size_t get_scene_specific_mem_allocated(cl_mem d_data) + { + size_t scene_specific_mem_allocated = 0; + /* Calculate texture memories. */ +#define KERNEL_TEX(type, ttype, name) \ + scene_specific_mem_allocated += get_tex_size(#name); +#include "kernel_textures.h" +#undef KERNEL_TEX + size_t d_data_size; + ciErr = clGetMemObjectInfo(d_data, + CL_MEM_SIZE, + sizeof(d_data_size), + &d_data_size, + NULL); + assert(ciErr == CL_SUCCESS && "Can't get d_data mem object info"); + scene_specific_mem_allocated += d_data_size; + return scene_specific_mem_allocated; + } + + /* Calculate the memory required for one thread in split kernel. */ + size_t get_per_thread_memory() + { + size_t shader_closure_size = 0; + size_t shaderdata_volume = 0; + shader_closure_size = get_shader_closure_size(current_clos_max); + /* TODO(sergey): This will actually over-allocate if + * particular kernel does not support multiclosure. + */ + shaderdata_volume = get_shader_data_size(shader_closure_size); + size_t retval = sizeof(RNG) + + throughput_size + L_transparent_size + + rayState_size + work_element_size + + ISLamp_size + sizeof(PathRadiance) + sizeof(Ray) + sizeof(PathState) + + sizeof(Intersection) /* Overall isect */ + + sizeof(Intersection) /* Instersection_coop_AO */ + + sizeof(Intersection) /* Intersection coop DL */ + + shaderdata_volume /* Overall ShaderData */ + + (shaderdata_volume * 2) /* ShaderData : DL and shadow */ + + sizeof(Ray) + sizeof(BsdfEval) + AOAlpha_size + AOBSDF_size + sizeof(Ray) + + (sizeof(int)* NUM_QUEUES) + + per_thread_output_buffer_size; + return retval; + } + + /* Considers the total memory available in the device and + * and returns the maximum global work size possible. + */ + size_t get_feasible_global_work_size(int2 tile_size, cl_mem d_data) + { + /* Calculate invariably allocated memory. */ + size_t invariable_mem_allocated = get_invariable_mem_allocated(); + /* Calculate tile specific allocated memory. */ + size_t tile_specific_mem_allocated = + get_tile_specific_mem_allocated(tile_size); + /* Calculate scene specific allocated memory. */ + size_t scene_specific_mem_allocated = + get_scene_specific_mem_allocated(d_data); + /* Calculate total memory available for the threads in global work size. */ + size_t available_memory = total_allocatable_memory + - invariable_mem_allocated + - tile_specific_mem_allocated + - scene_specific_mem_allocated + - DATA_ALLOCATION_MEM_FACTOR; + size_t per_thread_memory_required = get_per_thread_memory(); + return (available_memory / per_thread_memory_required); + } + + /* Checks if the device has enough memory to render the whole tile; + * If not, we should split single tile into multiple tiles of small size + * and process them all. + */ + bool need_to_split_tile(unsigned int d_w, + unsigned int d_h, + int2 max_render_feasible_tile_size) + { + size_t global_size_estimate[2]; + /* TODO(sergey): Such round-ups are in quite few places, need to replace + * them with an utility macro. + */ + global_size_estimate[0] = + (((d_w - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) * + SPLIT_KERNEL_LOCAL_SIZE_X; + global_size_estimate[1] = + (((d_h - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) * + SPLIT_KERNEL_LOCAL_SIZE_Y; + if((global_size_estimate[0] * global_size_estimate[1]) > + (max_render_feasible_tile_size.x * max_render_feasible_tile_size.y)) { - run = function_bind(&OpenCLDevice::thread_run, device, this); + return true; } - }; + else { + return false; + } + } - int get_split_task_count(DeviceTask& /*task*/) + /* Considers the scene properties, global memory available in the device + * and returns a rectanglular tile dimension (approx the maximum) + * that should render on split kernel. + */ + int2 get_max_render_feasible_tile_size(size_t feasible_global_work_size) { - return 1; + int2 max_render_feasible_tile_size; + int square_root_val = (int)sqrt(feasible_global_work_size); + max_render_feasible_tile_size.x = square_root_val; + max_render_feasible_tile_size.y = square_root_val; + /* Ciel round-off max_render_feasible_tile_size. */ + int2 ceil_render_feasible_tile_size; + ceil_render_feasible_tile_size.x = + (((max_render_feasible_tile_size.x - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) * + SPLIT_KERNEL_LOCAL_SIZE_X; + ceil_render_feasible_tile_size.y = + (((max_render_feasible_tile_size.y - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) * + SPLIT_KERNEL_LOCAL_SIZE_Y; + if(ceil_render_feasible_tile_size.x * ceil_render_feasible_tile_size.y <= + feasible_global_work_size) + { + return ceil_render_feasible_tile_size; + } + /* Floor round-off max_render_feasible_tile_size. */ + int2 floor_render_feasible_tile_size; + floor_render_feasible_tile_size.x = + (max_render_feasible_tile_size.x / SPLIT_KERNEL_LOCAL_SIZE_X) * + SPLIT_KERNEL_LOCAL_SIZE_X; + floor_render_feasible_tile_size.y = + (max_render_feasible_tile_size.y / SPLIT_KERNEL_LOCAL_SIZE_Y) * + SPLIT_KERNEL_LOCAL_SIZE_Y; + return floor_render_feasible_tile_size; } - void task_add(DeviceTask& task) + /* Try splitting the current tile into multiple smaller + * almost-square-tiles. + */ + int2 get_split_tile_size(RenderTile rtile, + int2 max_render_feasible_tile_size) { - task_pool.push(new OpenCLDeviceTask(this, task)); + int2 split_tile_size; + int num_global_threads = max_render_feasible_tile_size.x * + max_render_feasible_tile_size.y; + int d_w = rtile.w; + int d_h = rtile.h; + /* Ceil round off d_w and d_h */ + d_w = (((d_w - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) * + SPLIT_KERNEL_LOCAL_SIZE_X; + d_h = (((d_h - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) * + SPLIT_KERNEL_LOCAL_SIZE_Y; + while(d_w * d_h > num_global_threads) { + /* Halve the longer dimension. */ + if(d_w >= d_h) { + d_w = d_w / 2; + d_w = (((d_w - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) * + SPLIT_KERNEL_LOCAL_SIZE_X; + } + else { + d_h = d_h / 2; + d_h = (((d_h - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) * + SPLIT_KERNEL_LOCAL_SIZE_Y; + } + } + split_tile_size.x = d_w; + split_tile_size.y = d_h; + return split_tile_size; } - void task_wait() + /* Splits existing tile into multiple tiles of tile size split_tile_size. */ + vector<SplitRenderTile> split_tiles(RenderTile rtile, int2 split_tile_size) { - task_pool.wait(); + vector<SplitRenderTile> to_path_trace_rtile; + int d_w = rtile.w; + int d_h = rtile.h; + int num_tiles_x = (((d_w - 1) / split_tile_size.x) + 1); + int num_tiles_y = (((d_h - 1) / split_tile_size.y) + 1); + /* Buffer and rng_state offset calc. */ + size_t offset_index = rtile.offset + (rtile.x + rtile.y * rtile.stride); + size_t offset_x = offset_index % rtile.stride; + size_t offset_y = offset_index / rtile.stride; + /* Resize to_path_trace_rtile. */ + to_path_trace_rtile.resize(num_tiles_x * num_tiles_y); + for(int tile_iter_y = 0; tile_iter_y < num_tiles_y; tile_iter_y++) { + for(int tile_iter_x = 0; tile_iter_x < num_tiles_x; tile_iter_x++) { + int rtile_index = tile_iter_y * num_tiles_x + tile_iter_x; + to_path_trace_rtile[rtile_index].rng_state_offset_x = offset_x + tile_iter_x * split_tile_size.x; + to_path_trace_rtile[rtile_index].rng_state_offset_y = offset_y + tile_iter_y * split_tile_size.y; + to_path_trace_rtile[rtile_index].buffer_offset_x = offset_x + tile_iter_x * split_tile_size.x; + to_path_trace_rtile[rtile_index].buffer_offset_y = offset_y + tile_iter_y * split_tile_size.y; + to_path_trace_rtile[rtile_index].start_sample = rtile.start_sample; + to_path_trace_rtile[rtile_index].num_samples = rtile.num_samples; + to_path_trace_rtile[rtile_index].sample = rtile.sample; + to_path_trace_rtile[rtile_index].resolution = rtile.resolution; + to_path_trace_rtile[rtile_index].offset = rtile.offset; + to_path_trace_rtile[rtile_index].buffers = rtile.buffers; + to_path_trace_rtile[rtile_index].buffer = rtile.buffer; + to_path_trace_rtile[rtile_index].rng_state = rtile.rng_state; + to_path_trace_rtile[rtile_index].x = rtile.x + (tile_iter_x * split_tile_size.x); + to_path_trace_rtile[rtile_index].y = rtile.y + (tile_iter_y * split_tile_size.y); + to_path_trace_rtile[rtile_index].buffer_rng_state_stride = rtile.stride; + /* Fill width and height of the new render tile. */ + to_path_trace_rtile[rtile_index].w = (tile_iter_x == (num_tiles_x - 1)) ? + (d_w - (tile_iter_x * split_tile_size.x)) /* Border tile */ + : split_tile_size.x; + to_path_trace_rtile[rtile_index].h = (tile_iter_y == (num_tiles_y - 1)) ? + (d_h - (tile_iter_y * split_tile_size.y)) /* Border tile */ + : split_tile_size.y; + to_path_trace_rtile[rtile_index].stride = to_path_trace_rtile[rtile_index].w; + } + } + return to_path_trace_rtile; } - void task_cancel() + void thread_run(DeviceTask *task) { - task_pool.cancel(); + if(task->type == DeviceTask::FILM_CONVERT) { + film_convert(*task, task->buffer, task->rgba_byte, task->rgba_half); + } + else if(task->type == DeviceTask::SHADER) { + shader(*task); + } + else if(task->type == DeviceTask::PATH_TRACE) { + RenderTile tile; + bool initialize_data_and_check_render_feasibility = false; + bool need_to_split_tiles_further = false; + int2 max_render_feasible_tile_size; + size_t feasible_global_work_size; + const int2 tile_size = task->requested_tile_size; + /* Keep rendering tiles until done. */ + while(task->acquire_tile(this, tile)) { + if(!initialize_data_and_check_render_feasibility) { + /* Initialize data. */ + /* Calculate per_thread_output_buffer_size. */ + size_t output_buffer_size = 0; + ciErr = clGetMemObjectInfo((cl_mem)tile.buffer, + CL_MEM_SIZE, + sizeof(output_buffer_size), + &output_buffer_size, + NULL); + assert(ciErr == CL_SUCCESS && "Can't get tile.buffer mem object info"); + /* This value is different when running on AMD and NV. */ + if(background) { + /* In offline render the number of buffer elements + * associated with tile.buffer is the current tile size. + */ + per_thread_output_buffer_size = + output_buffer_size / (tile.w * tile.h); + } + else { + /* interactive rendering, unlike offline render, the number of buffer elements + * associated with tile.buffer is the entire viewport size. + */ + per_thread_output_buffer_size = + output_buffer_size / (tile.buffers->params.width * + tile.buffers->params.height); + } + /* Check render feasibility. */ + feasible_global_work_size = get_feasible_global_work_size( + tile_size, + CL_MEM_PTR(const_mem_map["__data"]->device_pointer)); + max_render_feasible_tile_size = + get_max_render_feasible_tile_size( + feasible_global_work_size); + need_to_split_tiles_further = + need_to_split_tile(tile_size.x, + tile_size.y, + max_render_feasible_tile_size); + initialize_data_and_check_render_feasibility = true; + } + if(need_to_split_tiles_further) { + int2 split_tile_size = + get_split_tile_size(tile, + max_render_feasible_tile_size); + vector<SplitRenderTile> to_path_trace_render_tiles = + split_tiles(tile, split_tile_size); + /* Print message to console */ + if(background && (to_path_trace_render_tiles.size() > 1)) { + fprintf(stderr, "Message : Tiles need to be split " + "further inside path trace (due to insufficient " + "device-global-memory for split kernel to " + "function) \n" + "The current tile of dimensions %dx%d is split " + "into tiles of dimension %dx%d for render \n", + tile.w, tile.h, + split_tile_size.x, + split_tile_size.y); + } + /* Process all split tiles. */ + for(int tile_iter = 0; + tile_iter < to_path_trace_render_tiles.size(); + ++tile_iter) + { + path_trace(to_path_trace_render_tiles[tile_iter], + max_render_feasible_tile_size); + } + } + else { + /* No splitting required; process the entire tile at once. */ + /* Render feasible tile size is user-set-tile-size itself. */ + max_render_feasible_tile_size.x = + (((tile_size.x - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) * + SPLIT_KERNEL_LOCAL_SIZE_X; + max_render_feasible_tile_size.y = + (((tile_size.y - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) * + SPLIT_KERNEL_LOCAL_SIZE_Y; + /* buffer_rng_state_stride is stride itself. */ + SplitRenderTile split_tile(tile); + split_tile.buffer_rng_state_stride = tile.stride; + path_trace(split_tile, max_render_feasible_tile_size); + } + tile.sample = tile.start_sample + tile.num_samples; + + /* Complete kernel execution before release tile. */ + /* This helps in multi-device render; + * The device that reaches the critical-section function + * release_tile waits (stalling other devices from entering + * release_tile) for all kernels to complete. If device1 (a + * slow-render device) reaches release_tile first then it would + * stall device2 (a fast-render device) from proceeding to render + * next tile. + */ + clFinish(cqCommandQueue); + + task->release_tile(tile); + } + } + } + +protected: + cl_mem mem_alloc(size_t bufsize, cl_mem_flags mem_flag = CL_MEM_READ_WRITE) + { + cl_mem ptr; + ptr = clCreateBuffer(cxContext, mem_flag, bufsize, NULL, &ciErr); + if(opencl_error(ciErr)) { + assert(0); + } + return ptr; } }; +/* Returns true in case of successful detection of platform and device type, + * else returns false. + */ +static bool get_platform_and_devicetype(const DeviceInfo info, + string &platform_name, + cl_device_type &device_type) +{ + cl_platform_id platform_id; + cl_device_id device_id; + cl_uint num_platforms; + cl_int ciErr; + + /* TODO(sergey): Use some generic error print helper function/ */ + ciErr = clGetPlatformIDs(0, NULL, &num_platforms); + if(ciErr != CL_SUCCESS) { + fprintf(stderr, "Can't getPlatformIds. file - %s, line - %d\n", __FILE__, __LINE__); + return false; + } + + if(num_platforms == 0) { + fprintf(stderr, "No OpenCL platforms found. file - %s, line - %d\n", __FILE__, __LINE__); + return false; + } + + vector<cl_platform_id> platforms(num_platforms, NULL); + + ciErr = clGetPlatformIDs(num_platforms, &platforms[0], NULL); + if(ciErr != CL_SUCCESS) { + fprintf(stderr, "Can't getPlatformIds. file - %s, line - %d\n", __FILE__, __LINE__); + return false; + } + + int num_base = 0; + int total_devices = 0; + + for(int platform = 0; platform < num_platforms; platform++) { + cl_uint num_devices; + + ciErr = clGetDeviceIDs(platforms[platform], opencl_device_type(), 0, NULL, &num_devices); + if(ciErr != CL_SUCCESS) { + fprintf(stderr, "Can't getDeviceIDs. file - %s, line - %d\n", __FILE__, __LINE__); + return false; + } + + total_devices += num_devices; + + if(info.num - num_base >= num_devices) { + /* num doesn't refer to a device in this platform */ + num_base += num_devices; + continue; + } + + /* device is in this platform */ + platform_id = platforms[platform]; + + /* get devices */ + vector<cl_device_id> device_ids(num_devices, NULL); + + ciErr = clGetDeviceIDs(platform_id, opencl_device_type(), num_devices, &device_ids[0], NULL); + if(ciErr != CL_SUCCESS) { + fprintf(stderr, "Can't getDeviceIDs. file - %s, line - %d\n", __FILE__, __LINE__); + return false; + } + + device_id = device_ids[info.num - num_base]; + + char name[256]; + ciErr = clGetPlatformInfo(platform_id, CL_PLATFORM_NAME, sizeof(name), &name, NULL); + if(ciErr != CL_SUCCESS) { + fprintf(stderr, "Can't getPlatformIDs. file - %s, line - %d \n", __FILE__, __LINE__); + return false; + } + platform_name = name; + + ciErr = clGetDeviceInfo(device_id, CL_DEVICE_TYPE, sizeof(cl_device_type), &device_type, NULL); + if(ciErr != CL_SUCCESS) { + fprintf(stderr, "Can't getDeviceInfo. file - %s, line - %d \n", __FILE__, __LINE__); + return false; + } + + break; + } + + if(total_devices == 0) { + fprintf(stderr, "No devices found. file - %s, line - %d \n", __FILE__, __LINE__); + return false; + } + + return true; +} + Device *device_opencl_create(DeviceInfo& info, Stats &stats, bool background) { - return new OpenCLDevice(info, stats, background); + string platform_name; + cl_device_type device_type; + if(get_platform_and_devicetype(info, platform_name, device_type)) { + const bool force_split_kernel = + getenv("CYCLES_OPENCL_SPLIT_KERNEL_TEST") != NULL; + /* TODO(sergey): Replace string lookups with more enum-like API, + * similar to device/venfdor checks blender's gpu. + */ + if(force_split_kernel || + (platform_name == "AMD Accelerated Parallel Processing" && + device_type == CL_DEVICE_TYPE_GPU)) + { + /* If the device is an AMD GPU, take split kernel path. */ + VLOG(1) << "Using split kernel"; + return new OpenCLDeviceSplitKernel(info, stats, background); + } else { + /* For any other device, take megakernel path. */ + VLOG(1) << "Using megekernel"; + return new OpenCLDeviceMegaKernel(info, stats, background); + } + } else { + /* If we can't retrieve platform and device type information for some + * reason, we default to megakernel path. + */ + VLOG(1) << "Failed to rertieve platform or device, using megakernel"; + return new OpenCLDeviceMegaKernel(info, stats, background); + } } -bool device_opencl_init(void) { +bool device_opencl_init(void) +{ static bool initialized = false; static bool result = false; @@ -1132,13 +3322,7 @@ bool device_opencl_init(void) { initialized = true; - // OpenCL disabled for now, only works with this environment variable set - if(!getenv("CYCLES_OPENCL_TEST")) { - result = false; - } - else { - result = clewInit() == CLEW_SUCCESS; - } + result = clewInit() == CLEW_SUCCESS; return result; } |