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/*

 * Copyright 2003 VMware, 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

 * VMWARE 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 

 */

#ifndef _TNL_VERTEX_H

#define _TNL_VERTEX_H

#include "main/glheader.h"

#include "t_context.h"

struct gl_context;

struct tnl_clipspace;

/* New mechanism to specify hardware vertices so that tnl can build

 * and manipulate them directly.

 */

/* It will probably be necessary to allow drivers to specify new

 * emit-styles to cover all the weird and wacky things out there.

 */

enum tnl_attr_format {

   EMIT_1F,

   EMIT_2F,

   EMIT_3F,

   EMIT_4F,

   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_RGB,		/* for specular color */

   EMIT_3UB_3F_BGR,		/* for specular color */

   EMIT_4UB_4F_RGBA,		/* for color */

   EMIT_4UB_4F_BGRA,		/* for color */

   EMIT_4UB_4F_ARGB,		/* for color */

   EMIT_4UB_4F_ABGR,		/* for color */

   EMIT_4CHAN_4F_RGBA,		/* for swrast color */

   EMIT_PAD,			/* leave a hole of 'offset' bytes */

   EMIT_MAX

};

struct tnl_attr_map {

   GLuint attrib;			/* _TNL_ATTRIB_ enum */

   enum tnl_attr_format format;

   GLuint offset;

};

struct tnl_format_info {

   const char *name;

   tnl_extract_func extract;

   tnl_insert_func insert[4];

   const GLuint attrsize;

};

extern const struct tnl_format_info _tnl_format_info[EMIT_MAX];

/* Interpolate between two vertices to produce a third:

 */

extern void _tnl_interp( struct gl_context *ctx,

			 GLfloat t,

			 GLuint edst, GLuint eout, GLuint ein,

			 GLboolean force_boundary );

/* Copy colors from one vertex to another:

 */

extern void _tnl_copy_pv(  struct gl_context *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( struct gl_context *ctx, const void *vertex, GLenum attrib,

			   GLfloat *dest );

/* Complementary to the above.

 */

extern void _tnl_set_attr( struct gl_context *ctx, void *vout, GLenum attrib,

			   const GLfloat *src );

extern void *_tnl_get_vertex( struct gl_context *ctx, GLuint nr );

extern GLuint _tnl_install_attrs( struct gl_context *ctx,

				  const struct tnl_attr_map *map,

				  GLuint nr, const GLfloat *vp,

				  GLuint unpacked_size );

extern void _tnl_free_vertices( struct gl_context *ctx );

extern void _tnl_init_vertices( struct gl_context *ctx,

				GLuint vb_size,

				GLuint max_vertex_size );

extern void *_tnl_emit_vertices_to_buffer( struct gl_context *ctx,

					   GLuint start,

					   GLuint end,

					   void *dest );

/* This function isn't optimal. Check out

 * gallium/auxilary/translate for a more comprehensive implementation of

 * the same functionality.

 */

extern void *_tnl_emit_indexed_vertices_to_buffer( struct gl_context *ctx,

						   const GLuint *elts,

						   GLuint start,

						   GLuint end,

						   void *dest );

extern void _tnl_build_vertices( struct gl_context *ctx,

				 GLuint start,

				 GLuint end,

				 GLuint newinputs );

extern void _tnl_invalidate_vertices( struct gl_context *ctx, GLuint newinputs );

extern void _tnl_invalidate_vertex_state( struct gl_context *ctx, GLuint new_state );

extern void _tnl_notify_pipeline_output_change( struct gl_context *ctx );

#define GET_VERTEX_STATE(ctx)  &(TNL_CONTEXT(ctx)->clipspace)

/* Internal function:

 */

void _tnl_register_fastpath( struct tnl_clipspace *vtx,

			     GLboolean match_strides );

/* t_vertex_generic.c -- Internal functions for t_vertex.c

 */

void _tnl_generic_copy_pv_extras( struct gl_context *ctx,

				  GLuint dst, GLuint src );

void _tnl_generic_interp_extras( struct gl_context *ctx,

				 GLfloat t,

				 GLuint dst, GLuint out, GLuint in,

				 GLboolean force_boundary );

void _tnl_generic_copy_pv( struct gl_context *ctx, GLuint edst, GLuint esrc );

void _tnl_generic_interp( struct gl_context *ctx,

			  GLfloat t,

			  GLuint edst, GLuint eout, GLuint ein,

			  GLboolean force_boundary );

void _tnl_generic_emit( struct gl_context *ctx,

			GLuint count,

			GLubyte *v );

void _tnl_generate_hardwired_emit( struct gl_context *ctx );

/* t_vertex_sse.c -- Internal functions for t_vertex.c

 */

void _tnl_generate_sse_emit( struct gl_context *ctx );

#endif