forked from bartvdbraak/blender
57cf48e7c6
should be no functional changes yet. UV, tangent and intercept are now stored as attributes, with the intention to add more like multiple uv's, vertex colors, generated coordinates and motion vectors later. Things got a bit messy due to having both triangle and curve data in the same mesh data structure, which also gives us two sets of attributes. This will get cleaned up when we split the mesh class.
149 lines
3.7 KiB
C++
149 lines
3.7 KiB
C++
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __ATTRIBUTE_H__
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#define __ATTRIBUTE_H__
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#include "kernel_types.h"
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#include "util_list.h"
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#include "util_param.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 Attribute;
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class AttributeSet;
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class AttributeRequest;
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class AttributeRequestSet;
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class Mesh;
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/* Attribute
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*
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* Arbitrary data layers on meshes.
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* Supported types: Float, Color, Vector, Normal, Point */
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class Attribute {
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public:
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ustring name;
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AttributeStandard std;
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TypeDesc type;
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vector<char> buffer;
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AttributeElement element;
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Attribute() {}
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void set(ustring name, TypeDesc type, AttributeElement element);
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void reserve(int numverts, int numfaces, int numcurves, int numkeys);
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size_t data_sizeof() const;
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size_t element_size(int numverts, int numfaces, int numcurves, int numkeys) const;
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size_t buffer_size(int numverts, int numfaces, int numcurves, int numkeys) const;
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char *data() { return (buffer.size())? &buffer[0]: NULL; };
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float3 *data_float3() { return (float3*)data(); }
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float *data_float() { return (float*)data(); }
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const char *data() const { return (buffer.size())? &buffer[0]: NULL; }
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const float3 *data_float3() const { return (const float3*)data(); }
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const float *data_float() const { return (const float*)data(); }
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void add(const float& f);
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void add(const float3& f);
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static bool same_storage(TypeDesc a, TypeDesc b);
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static const char *standard_name(AttributeStandard std);
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};
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/* Attribute Set
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*
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* Set of attributes on a mesh. */
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class AttributeSet {
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public:
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Mesh *triangle_mesh;
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Mesh *curve_mesh;
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list<Attribute> attributes;
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AttributeSet();
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~AttributeSet();
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Attribute *add(ustring name, TypeDesc type, AttributeElement element);
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Attribute *find(ustring name) const;
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void remove(ustring name);
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Attribute *add(AttributeStandard std, ustring name = ustring());
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Attribute *find(AttributeStandard std) const;
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void remove(AttributeStandard std);
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Attribute *find(AttributeRequest& req);
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void reserve();
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void clear();
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};
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/* AttributeRequest
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*
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* Request from a shader to use a certain attribute, so we can figure out
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* which ones we need to export from the host app end store for the kernel.
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* The attribute is found either by name or by standard attribute type. */
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class AttributeRequest {
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public:
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ustring name;
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AttributeStandard std;
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/* temporary variables used by MeshManager */
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TypeDesc triangle_type, curve_type;
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AttributeElement triangle_element, curve_element;
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int triangle_offset, curve_offset;
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AttributeRequest(ustring name_);
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AttributeRequest(AttributeStandard std);
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};
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/* AttributeRequestSet
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*
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* Set of attributes requested by a shader. */
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class AttributeRequestSet {
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public:
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vector<AttributeRequest> requests;
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AttributeRequestSet();
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~AttributeRequestSet();
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void add(ustring name);
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void add(AttributeStandard std);
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void add(AttributeRequestSet& reqs);
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bool find(ustring name);
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bool find(AttributeStandard std);
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size_t size();
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void clear();
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bool modified(const AttributeRequestSet& other);
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};
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CCL_NAMESPACE_END
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#endif /* __ATTRIBUTE_H__ */
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