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Diffstat (limited to 'src/gallium/aux/draw/draw_vf.h')
| -rw-r--r-- | src/gallium/aux/draw/draw_vf.h | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/src/gallium/aux/draw/draw_vf.h b/src/gallium/aux/draw/draw_vf.h new file mode 100644 index 00000000000..011c8f0ff1c --- /dev/null +++ b/src/gallium/aux/draw/draw_vf.h @@ -0,0 +1,236 @@ +/* + * Copyright 2008 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. + */ + + +/** + * Vertex fetch/store/convert code. This functionality is used in two places: + * 1. Vertex fetch/convert - to grab vertex data from incoming vertex + * arrays and convert to format needed by vertex shaders. + * 2. Vertex store/emit - to convert simple float[][4] vertex attributes + * (which is the organization used throughout the draw/prim pipeline) to + * hardware-specific formats and emit into hardware vertex buffers. + * + * + * Authors: + * Keith Whitwell <[email protected]> + */ + +#ifndef DRAW_VF_H +#define DRAW_VF_H + + +#include "pipe/p_compiler.h" +#include "pipe/p_state.h" + +#include "draw_vertex.h" +#include "draw_private.h" /* for vertex_header */ + + +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_1F_CONST, + DRAW_EMIT_2F_CONST, + DRAW_EMIT_3F_CONST, + DRAW_EMIT_4F_CONST, + DRAW_EMIT_PAD, /**< leave a hole of 'offset' bytes */ + DRAW_EMIT_MAX +}; + +struct draw_vf_attr_map +{ + /** Input attribute number */ + unsigned attrib; + + enum draw_vf_attr_format format; + + unsigned offset; + + /** + * Constant data for DRAW_EMIT_*_CONST + */ + union { + uint8_t ub[4]; + float f[4]; + } data; +}; + +struct draw_vertex_fetch; + + + +#if 0 +unsigned +draw_vf_set_vertex_attributes( struct draw_vertex_fetch *vf, + const struct draw_vf_attr_map *map, + unsigned nr, + unsigned vertex_stride ); +#endif + +void draw_vf_set_vertex_info( struct draw_vertex_fetch *vf, + const struct vertex_info *vinfo, + float point_size ); + +#if 0 +void +draw_vf_set_sources( struct draw_vertex_fetch *vf, + GLvector4f * const attrib[], + unsigned start ); +#endif + +void +draw_vf_emit_vertex( struct draw_vertex_fetch *vf, + struct vertex_header *vertex, + void *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 */ + + boolean isconst; /**< read from const data below */ + uint8_t data[16]; + + 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[PIPE_ATTRIB_MAX]; + unsigned attr_count; + unsigned vertex_stride; + + 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; +}; + +/** XXX this could be moved into draw_vf.c */ +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 ); + + +/** XXX this type and function could probably be moved into draw_vf.c */ +struct draw_vf_format_info { + const char *name; + draw_vf_insert_func insert[4]; + const unsigned attrsize; + const boolean isconst; +}; + +extern const struct draw_vf_format_info +draw_vf_format_info[DRAW_EMIT_MAX]; + + +#endif |