070d90937b
A CoglVertexAttribute defines a single attribute contained in a CoglVertexArray. I.e. a CoglVertexArray is simply a buffer of N bytes intended for containing a collection of attributes (position, color, normals etc) and a CoglVertexAttribute defines one such attribute by specifying its start offset in the array, its type, the number of components and the stride etc.
80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2010 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*
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*
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* Authors:
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* Robert Bragg <robert@linux.intel.com>
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*/
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#ifndef __COGL_VERTEX_ATTRIBUTE_PRIVATE_H
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#define __COGL_VERTEX_ATTRIBUTE_PRIVATE_H
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#include "cogl-object-private.h"
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#include "cogl-vertex-attribute.h"
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typedef enum
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{
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COGL_VERTEX_ATTRIBUTE_NAME_ID_POSITION_ARRAY,
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COGL_VERTEX_ATTRIBUTE_NAME_ID_COLOR_ARRAY,
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COGL_VERTEX_ATTRIBUTE_NAME_ID_TEXTURE_COORD_ARRAY,
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COGL_VERTEX_ATTRIBUTE_NAME_ID_NORMAL_ARRAY,
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COGL_VERTEX_ATTRIBUTE_NAME_ID_CUSTOM_ARRAY
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} CoglVertexAttributeNameID;
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struct _CoglVertexAttribute
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{
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CoglObject _parent;
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CoglVertexArray *array;
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char *name;
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CoglVertexAttributeNameID name_id;
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gsize stride;
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gsize offset;
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int n_components;
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CoglVertexAttributeType type;
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gboolean normalized;
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unsigned int texture_unit;
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int immutable_ref;
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};
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CoglVertexAttribute *
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_cogl_vertex_attribute_immutable_ref (CoglVertexAttribute *vertex_attribute);
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void
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_cogl_vertex_attribute_immutable_unref (CoglVertexAttribute *vertex_attribute);
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void
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_cogl_draw_vertex_attributes_array (CoglVerticesMode mode,
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int first_vertex,
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int n_vertices,
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CoglVertexAttribute **attributes);
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void
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_cogl_draw_indexed_vertex_attributes_array (CoglVerticesMode mode,
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int first_vertex,
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int n_vertices,
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CoglIndices *indices,
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CoglVertexAttribute **attributes);
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#endif /* __COGL_VERTEX_ATTRIBUTE_PRIVATE_H */
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