/* $XFree86: xc/lib/GL/mesa/src/drv/r128/r128_vb.h,v 1.4 2001/01/08 01:07:24 martin Exp $ */
/**************************************************************************

Copyright 1999, 2000 ATI Technologies Inc. and Precision Insight, Inc.,
                                               Cedar Park, Texas.
All Rights Reserved.

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**************************************************************************/

/*
 * Authors:
 *   Gareth Hughes <gareth@valinux.com>
 *   Kevin E. Martin <martin@valinux.com>
 *
 */

#ifndef __R128_VB_H__
#define __R128_VB_H__

#ifdef GLX_DIRECT_RENDERING

/* FIXME: This is endian-specific */
typedef struct {
   GLubyte	blue;
   GLubyte	green;
   GLubyte	red;
   GLubyte	alpha;
} r128_color_t;

/* The vertex structure.  The final tu1/tv1 values are only used in
 * multitexture modes, and the rhw2 value is currently never used.
 */
typedef struct {
   GLfloat x, y, z;			/* Coordinates in screen space */
   GLfloat rhw;				/* Reciprocal homogeneous w */
   r128_color_t color;			/* Diffuse color */
   r128_color_t specular;		/* Specular color (alpha is fog) */
   GLfloat tu0, tv0;			/* Texture 0 coordinates */
   GLfloat tu1, tv1;			/* Texture 1 coordinates */
   GLfloat rhw2;			/* Reciprocal homogeneous w2 */
} r128_vertex;

/* Format of vertices in r128_vertex struct:
 */
#define R128_TEX0_VERTEX_FORMAT		(R128_CCE_VC_FRMT_RHW |		\
					 R128_CCE_VC_FRMT_DIFFUSE_ARGB |\
					 R128_CCE_VC_FRMT_SPEC_FRGB |	\
					 R128_CCE_VC_FRMT_S_T)

#define R128_TEX1_VERTEX_FORMAT		(R128_CCE_VC_FRMT_RHW |		\
					 R128_CCE_VC_FRMT_DIFFUSE_ARGB |\
					 R128_CCE_VC_FRMT_SPEC_FRGB |	\
					 R128_CCE_VC_FRMT_S_T |		\
					 R128_CCE_VC_FRMT_S2_T2)

#define R128_PROJ_TEX1_VERTEX_FORMAT	(R128_CCE_VC_FRMT_RHW |		\
					 R128_CCE_VC_FRMT_DIFFUSE_ARGB |\
					 R128_CCE_VC_FRMT_SPEC_FRGB |	\
					 R128_CCE_VC_FRMT_S_T |		\
					 R128_CCE_VC_FRMT_S2_T2 |	\
					 R128_CCE_VC_FRMT_RHW2)


/* The fastpath code still expects a 16-float stride vertex.
 */
union r128_vertex_t {
   r128_vertex v;
   GLfloat f[16];
   GLuint ui[16];
};

typedef union r128_vertex_t r128Vertex;
typedef union r128_vertex_t *r128VertexPtr;

typedef struct {
   r128VertexPtr verts;
   GLvector1ui clipped_elements;
   GLint last_vert;
   void *vert_store;
   GLuint size;
} *r128VertexBufferPtr;

#define R128_DRIVER_DATA(vb)	((r128VertexBufferPtr)((vb)->driver_data))

#define R128_WIN_BIT		0x01
#define R128_RGBA_BIT		0x02
#define R128_FOG_BIT		0x04
#define R128_SPEC_BIT		0x08
#define R128_TEX0_BIT		0x10
#define R128_TEX1_BIT		0x20
#define R128_MAX_SETUPFUNC	0x40

extern void r128DDChooseRasterSetupFunc( GLcontext *ctx );
extern void r128PrintSetupFlags( char *msg, GLuint flags );

extern void r128DDCheckPartialRasterSetup( GLcontext *ctx,
					   struct gl_pipeline_stage *s );
extern void r128DDPartialRasterSetup( struct vertex_buffer *VB );
extern void r128DDDoRasterSetup( struct vertex_buffer *VB );

extern void r128DDResizeVB( struct vertex_buffer *VB, GLuint size );
extern void r128DDRegisterVB( struct vertex_buffer *VB );
extern void r128DDUnregisterVB( struct vertex_buffer *VB );

extern void r128DDSetupInit( void );

#endif
#endif /* __R128_VB_H__ */