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Diffstat (limited to 'src/mesa/tnl/t_vertex.h')
-rw-r--r-- | src/mesa/tnl/t_vertex.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/mesa/tnl/t_vertex.h b/src/mesa/tnl/t_vertex.h new file mode 100644 index 00000000000..26f2619c52b --- /dev/null +++ b/src/mesa/tnl/t_vertex.h @@ -0,0 +1,92 @@ +/* + * Copyright 2003 Tungsten Graphics, inc. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: + * Keith Whitwell <[email protected]> + */ + +#ifndef _TNL_VERTEX_H +#define _TNL_VERTEX_H + +/* New mechanism to specify hardware vertices so that tnl can build + * and manipulate them directly. + */ + +enum tnl_attr_format { + EMIT_1F = 1, + EMIT_2F = 2, + EMIT_3F = 3, + EMIT_4F = 4, + EMIT_2F_VIEWPORT, /* do viewport transform and emit */ + EMIT_3F_VIEWPORT, /* do viewport transform and emit */ + EMIT_4F_VIEWPORT, /* do viewport transform and emit */ + EMIT_3F_XYW, /* for projective texture */ + EMIT_1UB_1F, /* for fog coordinate */ + EMIT_3UB_3F_BGR, /* for specular color */ + EMIT_3UB_3F_RGB, /* for specular color */ + EMIT_4UB_4F_BGRA, /* for color */ + EMIT_4UB_4F_RGBA, /* for color */ + EMIT_NOP_1F, + EMIT_NOP_1UB, +}; + +struct tnl_attr_map { + GLuint attr; /* VERT_ATTRIB_ enum */ + enum tnl_attr_format format; +}; + + +/* Emit hardware vertices to a given buffer: + */ +extern void _tnl_emit( GLcontext *ctx, + GLuint start, GLuint end, + void *dest, + GLuint stride ); + +/* Interpolate between two vertices to produce a third: + */ +extern void _tnl_interp( GLcontext *ctx, + GLfloat t, + GLuint edst, GLuint eout, GLuint ein, + GLboolean force_boundary ); + +/* Copy colors from one vertex to another: + */ +extern void _tnl_copy_colors( GLcontext *ctx, GLuint edst, GLuint esrc ); + + +/* Extract a named attribute from a hardware vertex. Will have to + * reverse any viewport transformation, swizzling or other conversions + * which may have been applied: + */ +extern void _tnl_get_attr( GLcontext *ctx, void *vertex, GLenum attrib, + GLfloat *dest ); + +/* Populate a swrast SWvertex from an attrib-style vertex. + */ +extern void _tnl_translate( GLcontext *ctx, const void *vertex, + SWvertex *dest ); + + + +#endif |