2011-04-27 11:58:34 +00:00
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/*
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2013-08-18 14:16:15 +00:00
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* Copyright 2011-2013 Blender Foundation
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2011-04-27 11:58:34 +00:00
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*
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2013-08-18 14:16:15 +00:00
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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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2011-04-27 11:58:34 +00:00
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*
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2013-08-18 14:16:15 +00:00
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* http://www.apache.org/licenses/LICENSE-2.0
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2011-04-27 11:58:34 +00:00
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*
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2013-08-18 14:16:15 +00:00
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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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2014-12-25 01:50:24 +00:00
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* limitations under the License.
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2011-04-27 11:58:34 +00:00
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*/
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#ifndef __SHADER_H__
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#define __SHADER_H__
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2014-10-06 07:39:19 +00:00
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#ifdef WITH_OSL
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2014-12-04 11:48:14 +00:00
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# if defined(_MSC_VER)
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2014-12-08 08:46:21 +00:00
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/* Prevent OSL from polluting the context with weird macros from windows.h.
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2014-12-04 11:48:14 +00:00
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* TODO(sergey): Ideally it's only enough to have class/struct declarations in
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* the header and skip header include here.
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*/
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# define NOGDI
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# define NOMINMAX
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# define WIN32_LEAN_AND_MEAN
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# endif
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2014-10-06 07:39:19 +00:00
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# include <OSL/oslexec.h>
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#endif
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2011-04-27 11:58:34 +00:00
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#include "attribute.h"
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#include "kernel_types.h"
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#include "util_map.h"
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#include "util_param.h"
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#include "util_string.h"
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#include "util_types.h"
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CCL_NAMESPACE_BEGIN
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class Device;
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class DeviceScene;
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class Mesh;
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class Progress;
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class Scene;
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class ShaderGraph;
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2011-05-03 18:29:11 +00:00
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struct float3;
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2011-04-27 11:58:34 +00:00
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2014-05-19 10:49:36 +00:00
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enum ShadingSystem {
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SHADINGSYSTEM_OSL,
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SHADINGSYSTEM_SVM
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};
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2014-10-22 14:17:03 +00:00
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/* Keep those in sync with the python-defined enum. */
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enum VolumeSampling {
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VOLUME_SAMPLING_DISTANCE = 0,
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VOLUME_SAMPLING_EQUIANGULAR = 1,
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VOLUME_SAMPLING_MULTIPLE_IMPORTANCE = 2,
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};
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enum VolumeInterpolation {
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VOLUME_INTERPOLATION_LINEAR = 0,
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VOLUME_INTERPOLATION_CUBIC = 1,
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};
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2011-04-27 11:58:34 +00:00
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/* Shader describing the appearance of a Mesh, Light or Background.
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*
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2011-10-12 23:03:12 +00:00
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* While there is only a single shader graph, it has three outputs: surface,
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* volume and displacement, that the shader manager will compile and execute
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2011-04-27 11:58:34 +00:00
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* separately. */
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class Shader {
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public:
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/* name */
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string name;
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Cycles: Render Passes
Currently supported passes:
* Combined, Z, Normal, Object Index, Material Index, Emission, Environment,
Diffuse/Glossy/Transmission x Direct/Indirect/Color
Not supported yet:
* UV, Vector, Mist
Only enabled for CPU devices at the moment, will do GPU tweaks tommorrow,
also for environment importance sampling.
Documentation:
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Passes
2012-01-25 17:23:52 +00:00
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int pass_id;
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2011-04-27 11:58:34 +00:00
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/* shader graph */
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ShaderGraph *graph;
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/* shader graph with auto bump mapping included, we compile two shaders,
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2012-06-09 17:22:52 +00:00
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* with and without bump, because the displacement method is a mesh
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* level setting, so we need to handle both */
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2011-04-27 11:58:34 +00:00
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ShaderGraph *graph_bump;
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2011-09-27 20:37:24 +00:00
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/* sampling */
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2013-06-18 09:36:00 +00:00
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bool use_mis;
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bool use_transparent_shadow;
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2013-12-29 21:19:38 +00:00
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bool heterogeneous_volume;
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2014-10-22 14:17:03 +00:00
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VolumeSampling volume_sampling_method;
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2014-10-22 13:23:45 +00:00
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int volume_interpolation_method;
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2011-09-27 20:37:24 +00:00
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2011-04-27 11:58:34 +00:00
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/* synchronization */
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bool need_update;
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bool need_update_attributes;
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/* information about shader after compiling */
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2011-10-12 23:03:12 +00:00
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bool has_surface;
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2011-04-27 11:58:34 +00:00
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bool has_surface_emission;
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2011-09-27 20:37:24 +00:00
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bool has_surface_transparent;
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2011-10-12 15:42:35 +00:00
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bool has_volume;
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2011-10-12 23:03:12 +00:00
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bool has_displacement;
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2013-04-01 20:26:52 +00:00
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bool has_surface_bssrdf;
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2013-07-31 20:56:32 +00:00
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bool has_converter_blackbody;
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2013-08-18 14:15:57 +00:00
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bool has_bssrdf_bump;
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2014-04-03 20:04:39 +00:00
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bool has_heterogeneous_volume;
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2015-01-21 17:19:31 +00:00
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bool has_object_dependency;
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2011-04-27 11:58:34 +00:00
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/* requested mesh attributes */
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AttributeRequestSet attributes;
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2012-10-30 11:51:17 +00:00
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/* determined before compiling */
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bool used;
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2012-11-03 14:32:35 +00:00
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#ifdef WITH_OSL
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/* osl shading state references */
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OSL::ShadingAttribStateRef osl_surface_ref;
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OSL::ShadingAttribStateRef osl_surface_bump_ref;
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OSL::ShadingAttribStateRef osl_volume_ref;
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OSL::ShadingAttribStateRef osl_displacement_ref;
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#endif
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2011-04-27 11:58:34 +00:00
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Shader();
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~Shader();
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void set_graph(ShaderGraph *graph);
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void tag_update(Scene *scene);
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2012-10-30 11:51:17 +00:00
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void tag_used(Scene *scene);
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2011-04-27 11:58:34 +00:00
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};
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/* Shader Manager virtual base class
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*
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* From this the SVM and OSL shader managers are derived, that do the actual
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* shader compiling and device updating. */
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class ShaderManager {
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public:
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bool need_update;
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2012-12-04 07:48:09 +00:00
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static ShaderManager *create(Scene *scene, int shadingsystem);
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2011-04-27 11:58:34 +00:00
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virtual ~ShaderManager();
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2013-02-14 16:11:47 +00:00
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virtual void reset(Scene *scene) = 0;
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2012-12-04 07:48:09 +00:00
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virtual bool use_osl() { return false; }
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2011-04-27 11:58:34 +00:00
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/* device update */
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virtual void device_update(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress) = 0;
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2013-04-01 20:26:52 +00:00
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virtual void device_free(Device *device, DeviceScene *dscene, Scene *scene) = 0;
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2011-04-27 11:58:34 +00:00
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2012-10-30 11:51:17 +00:00
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void device_update_shaders_used(Scene *scene);
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2011-09-27 20:37:24 +00:00
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void device_update_common(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress);
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2013-04-01 20:26:52 +00:00
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void device_free_common(Device *device, DeviceScene *dscene, Scene *scene);
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2011-09-27 20:37:24 +00:00
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2011-04-27 11:58:34 +00:00
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/* get globally unique id for a type of attribute */
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uint get_attribute_id(ustring name);
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2012-04-30 12:49:26 +00:00
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uint get_attribute_id(AttributeStandard std);
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2011-04-27 11:58:34 +00:00
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/* get shader id for mesh faces */
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int get_shader_id(uint shader, Mesh *mesh = NULL, bool smooth = false);
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/* add default shaders to scene, to use as default for things that don't
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2012-06-09 17:22:52 +00:00
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* have any shader assigned explicitly */
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2011-04-27 11:58:34 +00:00
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static void add_default(Scene *scene);
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protected:
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ShaderManager();
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typedef unordered_map<ustring, uint, ustringHash> AttributeIDMap;
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AttributeIDMap unique_attribute_id;
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2013-04-01 20:26:52 +00:00
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2015-01-23 09:00:48 +00:00
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vector<float> blackbody_table;
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vector<float> beckmann_table;
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2013-07-31 20:56:32 +00:00
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size_t blackbody_table_offset;
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2014-06-20 19:21:05 +00:00
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size_t beckmann_table_offset;
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2011-04-27 11:58:34 +00:00
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};
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CCL_NAMESPACE_END
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#endif /* __SHADER_H__ */
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