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authorKeith Whitwell <keith@tungstengraphics.com>2003-12-21 17:54:31 +0000
committerKeith Whitwell <keith@tungstengraphics.com>2003-12-21 17:54:31 +0000
commitfabb9734ddd1a9b43e7835190f2f4828add2db3c (patch)
tree71ae2003e0d1717d0f019c4af7b443c26e917f63 /src/mesa/tnl/t_vertex.h
parent259b880bc77afd5ef288ac9c38a6d4cb31d286f5 (diff)
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+/*
+ * 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 <keithw@tungstengraphics.com>
+ */
+
+#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