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src/mesa/tnl/t_vertex.h

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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