56ead9d34b
This gives few percent extra memory saving for the CUDA kernel when using regular path tracing. Still more like an experiment, but will be handy in the future.
274 lines
7.4 KiB
C++
274 lines
7.4 KiB
C++
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __DEVICE_H__
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#define __DEVICE_H__
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#include <stdlib.h>
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#include "device_memory.h"
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#include "device_task.h"
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#include "util_list.h"
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#include "util_stats.h"
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#include "util_string.h"
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#include "util_thread.h"
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#include "util_types.h"
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#include "util_vector.h"
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CCL_NAMESPACE_BEGIN
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class Progress;
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class RenderTile;
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/* Device Types */
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enum DeviceType {
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DEVICE_NONE,
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DEVICE_CPU,
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DEVICE_OPENCL,
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DEVICE_CUDA,
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DEVICE_NETWORK,
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DEVICE_MULTI
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};
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class DeviceInfo {
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public:
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DeviceType type;
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string description;
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string id;
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int num;
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bool display_device;
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bool advanced_shading;
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bool pack_images;
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bool extended_images; /* flag for GPU and Multi device */
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bool use_split_kernel; /* Denotes if the device is going to run cycles using split-kernel */
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vector<DeviceInfo> multi_devices;
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DeviceInfo()
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{
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type = DEVICE_CPU;
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id = "CPU";
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num = 0;
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display_device = false;
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advanced_shading = true;
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pack_images = false;
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extended_images = false;
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use_split_kernel = false;
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}
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};
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class DeviceRequestedFeatures {
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public:
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/* Use experimental feature set. */
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bool experimental;
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/* Maximum number of closures in shader trees. */
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int max_closure;
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/* Selective nodes compilation. */
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/* Identifier of a node group up to which all the nodes needs to be
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* compiled in. Nodes from higher group indices will be ignores.
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*/
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int max_nodes_group;
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/* Features bitfield indicating which features from the requested group
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* will be compiled in. Nodes which corresponds to features which are not
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* in this bitfield will be ignored even if they're in the requested group.
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*/
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int nodes_features;
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/* BVH/sampling kernel features. */
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bool use_hair;
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bool use_object_motion;
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bool use_camera_motion;
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/* Denotes whether baking functionality is needed. */
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bool use_baking;
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/* Use subsurface scattering materials. */
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bool use_subsurface;
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/* Use branched integrator. */
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bool use_integrator_branched;
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DeviceRequestedFeatures()
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{
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/* TODO(sergey): Find more meaningful defaults. */
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experimental = false;
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max_closure = 0;
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max_nodes_group = 0;
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nodes_features = 0;
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use_hair = false;
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use_object_motion = false;
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use_camera_motion = false;
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use_baking = false;
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use_subsurface = false;
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use_integrator_branched = false;
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}
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bool modified(const DeviceRequestedFeatures& requested_features)
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{
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return !(experimental == requested_features.experimental &&
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max_closure == requested_features.max_closure &&
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max_nodes_group == requested_features.max_nodes_group &&
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nodes_features == requested_features.nodes_features &&
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use_hair == requested_features.use_hair &&
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use_object_motion == requested_features.use_object_motion &&
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use_camera_motion == requested_features.use_camera_motion &&
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use_baking == requested_features.use_baking &&
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use_subsurface == requested_features.use_subsurface &&
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use_integrator_branched == requested_features.use_integrator_branched);
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}
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/* Convert the requested features structure to a build options,
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* which could then be passed to compilers.
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*/
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string get_build_options(void) const
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{
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string build_options = "";
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if(experimental) {
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build_options += "-D__KERNEL_EXPERIMENTAL__ ";
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}
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build_options += "-D__NODES_MAX_GROUP__=" +
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string_printf("%d", max_nodes_group);
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build_options += " -D__NODES_FEATURES__=" +
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string_printf("%d", nodes_features);
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build_options += string_printf(" -D__MAX_CLOSURE__=%d", max_closure);
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if(!use_hair) {
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build_options += " -D__NO_HAIR__";
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}
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if(!use_object_motion) {
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build_options += " -D__NO_OBJECT_MOTION__";
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}
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if(!use_camera_motion) {
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build_options += " -D__NO_CAMERA_MOTION__";
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}
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if(!use_baking) {
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build_options += " -D__NO_BAKING__";
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}
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if(!use_subsurface) {
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build_options += " -D__NO_SUBSURFACE__";
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}
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if(!use_integrator_branched) {
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build_options += " -D__NO_BRANCHED_PATH__";
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}
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return build_options;
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}
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};
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std::ostream& operator <<(std::ostream &os,
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const DeviceRequestedFeatures& requested_features);
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/* Device */
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struct DeviceDrawParams {
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function<void(void)> bind_display_space_shader_cb;
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function<void(void)> unbind_display_space_shader_cb;
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};
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class Device {
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protected:
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Device(DeviceInfo& info_, Stats &stats_, bool background) : background(background), vertex_buffer(0), info(info_), stats(stats_) {}
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bool background;
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string error_msg;
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/* used for real time display */
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unsigned int vertex_buffer;
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public:
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virtual ~Device();
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/* info */
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DeviceInfo info;
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virtual const string& error_message() { return error_msg; }
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bool have_error() { return !error_message().empty(); }
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/* statistics */
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Stats &stats;
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/* regular memory */
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virtual void mem_alloc(device_memory& mem, MemoryType type) = 0;
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virtual void mem_copy_to(device_memory& mem) = 0;
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virtual void mem_copy_from(device_memory& mem,
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int y, int w, int h, int elem) = 0;
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virtual void mem_zero(device_memory& mem) = 0;
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virtual void mem_free(device_memory& mem) = 0;
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/* constant memory */
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virtual void const_copy_to(const char *name, void *host, size_t size) = 0;
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/* texture memory */
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virtual void tex_alloc(const char * /*name*/,
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device_memory& /*mem*/,
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InterpolationType interpolation = INTERPOLATION_NONE,
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ExtensionType extension = EXTENSION_REPEAT)
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{
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(void)interpolation; /* Ignored. */
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(void)extension; /* Ignored. */
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};
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virtual void tex_free(device_memory& /*mem*/) {};
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/* pixel memory */
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virtual void pixels_alloc(device_memory& mem);
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virtual void pixels_copy_from(device_memory& mem, int y, int w, int h);
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virtual void pixels_free(device_memory& mem);
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/* open shading language, only for CPU device */
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virtual void *osl_memory() { return NULL; }
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/* load/compile kernels, must be called before adding tasks */
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virtual bool load_kernels(
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const DeviceRequestedFeatures& /*requested_features*/)
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{ return true; }
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/* tasks */
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virtual int get_split_task_count(DeviceTask& task) = 0;
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virtual void task_add(DeviceTask& task) = 0;
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virtual void task_wait() = 0;
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virtual void task_cancel() = 0;
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/* opengl drawing */
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virtual void draw_pixels(device_memory& mem, int y, int w, int h,
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int dx, int dy, int width, int height, bool transparent,
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const DeviceDrawParams &draw_params);
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#ifdef WITH_NETWORK
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/* networking */
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void server_run();
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#endif
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/* multi device */
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virtual void map_tile(Device * /*sub_device*/, RenderTile& /*tile*/) {}
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virtual int device_number(Device * /*sub_device*/) { return 0; }
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/* static */
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static Device *create(DeviceInfo& info, Stats &stats, bool background = true);
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static DeviceType type_from_string(const char *name);
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static string string_from_type(DeviceType type);
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static vector<DeviceType>& available_types();
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static vector<DeviceInfo>& available_devices();
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static string device_capabilities();
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};
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CCL_NAMESPACE_END
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#endif /* __DEVICE_H__ */
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