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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 DRAW_VF_H
#define DRAW_VF_H
#include "math/m_vector.h"
#include "pipe/p_compiler.h"
#include "draw_vertex.h"
enum {
DRAW_VF_ATTRIB_POS = 0,
DRAW_VF_ATTRIB_WEIGHT = 1,
DRAW_VF_ATTRIB_NORMAL = 2,
DRAW_VF_ATTRIB_COLOR0 = 3,
DRAW_VF_ATTRIB_COLOR1 = 4,
DRAW_VF_ATTRIB_FOG = 5,
DRAW_VF_ATTRIB_COLOR_INDEX = 6,
DRAW_VF_ATTRIB_EDGEFLAG = 7,
DRAW_VF_ATTRIB_TEX0 = 8,
DRAW_VF_ATTRIB_TEX1 = 9,
DRAW_VF_ATTRIB_TEX2 = 10,
DRAW_VF_ATTRIB_TEX3 = 11,
DRAW_VF_ATTRIB_TEX4 = 12,
DRAW_VF_ATTRIB_TEX5 = 13,
DRAW_VF_ATTRIB_TEX6 = 14,
DRAW_VF_ATTRIB_TEX7 = 15,
DRAW_VF_ATTRIB_VAR0 = 16,
DRAW_VF_ATTRIB_VAR1 = 17,
DRAW_VF_ATTRIB_VAR2 = 18,
DRAW_VF_ATTRIB_VAR3 = 19,
DRAW_VF_ATTRIB_VAR4 = 20,
DRAW_VF_ATTRIB_VAR5 = 21,
DRAW_VF_ATTRIB_VAR6 = 22,
DRAW_VF_ATTRIB_VAR7 = 23,
DRAW_VF_ATTRIB_POINTSIZE = 24,
DRAW_VF_ATTRIB_BFC0 = 25,
DRAW_VF_ATTRIB_BFC1 = 26,
DRAW_VF_ATTRIB_CLIP_POS = 27,
DRAW_VF_ATTRIB_VERTEX_HEADER = 28,
DRAW_VF_ATTRIB_MAX = 29
};
enum draw_vf_attr_format {
DRAW_EMIT_1F,
DRAW_EMIT_2F,
DRAW_EMIT_3F,
DRAW_EMIT_4F,
DRAW_EMIT_3F_XYW, /**< for projective texture */
DRAW_EMIT_1UB_1F, /**< for fog coordinate */
DRAW_EMIT_3UB_3F_RGB, /**< for specular color */
DRAW_EMIT_3UB_3F_BGR, /**< for specular color */
DRAW_EMIT_4UB_4F_RGBA, /**< for color */
DRAW_EMIT_4UB_4F_BGRA, /**< for color */
DRAW_EMIT_4UB_4F_ARGB, /**< for color */
DRAW_EMIT_4UB_4F_ABGR, /**< for color */
DRAW_EMIT_PAD, /**< leave a hole of 'offset' bytes */
DRAW_EMIT_MAX
};
struct draw_vf_attr_map {
unsigned attrib;
enum draw_vf_attr_format format;
unsigned offset;
};
struct draw_vertex_fetch;
unsigned
draw_vf_set_vertex_attributes( struct draw_vertex_fetch *vf,
const struct draw_vf_attr_map *map,
unsigned nr,
unsigned vertex_stride );
void
draw_vf_set_sources( struct draw_vertex_fetch *vf,
GLvector4f * const attrib[],
unsigned start );
void
draw_vf_set_data( struct draw_vertex_fetch *vf,
float data[][4]);
void
draw_vf_emit_vertices( struct draw_vertex_fetch *vf,
unsigned count,
void *dest );
void
draw_vf_get_attr( struct draw_vertex_fetch *vf,
const void *vertex,
GLenum attr,
const float *dflt,
float *dest );
struct draw_vertex_fetch *
draw_vf_create( void );
void
draw_vf_destroy( struct draw_vertex_fetch *vf );
/***********************************************************************
* Internal functions and structs:
*/
struct draw_vf_attr;
typedef void (*draw_vf_extract_func)( const struct draw_vf_attr *a,
float *out,
const uint8_t *v );
typedef void (*draw_vf_insert_func)( const struct draw_vf_attr *a,
uint8_t *v,
const float *in );
typedef void (*draw_vf_emit_func)( struct draw_vertex_fetch *vf,
unsigned count,
uint8_t *dest );
/**
* Describes how to convert/move a vertex attribute from a vertex
* array to a vertex structure.
*/
struct draw_vf_attr
{
struct draw_vertex_fetch *vf;
unsigned format;
unsigned inputsize;
unsigned inputstride;
unsigned vertoffset; /**< position of the attrib in the vertex struct */
unsigned attrib; /**< which vertex attrib (0=position, etc) */
unsigned vertattrsize; /**< size of the attribute in bytes */
uint8_t *inputptr;
const draw_vf_insert_func *insert;
draw_vf_insert_func do_insert;
draw_vf_extract_func extract;
};
struct draw_vertex_fetch
{
struct draw_vf_attr attr[DRAW_VF_ATTRIB_MAX];
unsigned attr_count;
unsigned vertex_stride;
struct draw_vf_attr *lookup[DRAW_VF_ATTRIB_MAX];
draw_vf_emit_func emit;
/* Parameters and constants for codegen:
*/
float identity[4];
struct draw_vf_fastpath *fastpath;
void (*codegen_emit)( struct draw_vertex_fetch *vf );
};
struct draw_vf_attr_type {
unsigned format;
unsigned size;
unsigned stride;
unsigned offset;
};
struct draw_vf_fastpath {
unsigned vertex_stride;
unsigned attr_count;
boolean match_strides;
struct draw_vf_attr_type *attr;
draw_vf_emit_func func;
struct draw_vf_fastpath *next;
};
void
draw_vf_register_fastpath( struct draw_vertex_fetch *vtx,
boolean match_strides );
void
draw_vf_generic_emit( struct draw_vertex_fetch *vf,
unsigned count,
uint8_t *v );
void
draw_vf_generate_hardwired_emit( struct draw_vertex_fetch *vf );
void
draw_vf_generate_sse_emit( struct draw_vertex_fetch *vf );
struct draw_vf_format_info {
const char *name;
draw_vf_insert_func insert[4];
const unsigned attrsize;
};
const struct draw_vf_format_info draw_vf_format_info[DRAW_EMIT_MAX];
#endif
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