src/gallium/auxiliary/translate/translate.h

   1 /*
   2  * Copyright 2008 Tungsten Graphics, inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  19  * TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 /**
  27  * Vertex fetch/store/convert code.  This functionality is used in two places:
  28  * 1. Vertex fetch/convert - to grab vertex data from incoming vertex
  29  *    arrays and convert to format needed by vertex shaders.
  30  * 2. Vertex store/emit - to convert simple float[][4] vertex attributes
  31  *    (which is the organization used throughout the draw/prim pipeline) to
  32  *    hardware-specific formats and emit into hardware vertex buffers.
  33  *
  34  *
  35  * Authors:
  36  *    Keith Whitwell <keithw@tungstengraphics.com>
  37  */
  38
  39 #ifndef _TRANSLATE_H
  40 #define _TRANSLATE_H
  41
  42
  43 #include "pipe/p_compiler.h"
  44 #include "pipe/p_format.h"
  45 #include "pipe/p_state.h"
  46
  47 enum translate_element_type {
  48    TRANSLATE_ELEMENT_NORMAL,
  49    TRANSLATE_ELEMENT_INSTANCE_ID
  50 };
  51
  52 struct translate_element
  53 {
  54    enum translate_element_type type;
  55    enum pipe_format input_format;
  56    enum pipe_format output_format;
  57    unsigned input_buffer:8;
  58    unsigned input_offset:24;
  59    unsigned instance_divisor;
  60    unsigned output_offset;
  61 };
  62
  63
  64 struct translate_key {
  65    unsigned output_stride;
  66    unsigned nr_elements;
  67    struct translate_element element[PIPE_MAX_ATTRIBS + 1];
  68 };
  69
  70
  71 struct translate;
  72
  73
  74 typedef void (PIPE_CDECL *run_elts_func)(struct translate *,
  75                                          const unsigned *elts,
  76                                          unsigned count,
  77                                          unsigned instance_id,
  78                                          void *output_buffer);
  79
  80 typedef void (PIPE_CDECL *run_elts16_func)(struct translate *,
  81                                            const uint16_t *elts,
  82                                            unsigned count,
  83                                            unsigned instance_id,
  84                                            void *output_buffer);
  85
  86 typedef void (PIPE_CDECL *run_elts8_func)(struct translate *,
  87                                           const uint8_t *elts,
  88                                           unsigned count,
  89                                           unsigned instance_id,
  90                                           void *output_buffer);
  91
  92 typedef void (PIPE_CDECL *run_func)(struct translate *,
  93                                     unsigned start,
  94                                     unsigned count,
  95                                     unsigned instance_id,
  96                                     void *output_buffer);
  97
  98 struct translate {
  99    struct translate_key key;
 100
 101    void (*release)( struct translate * );
 102
 103    void (*set_buffer)( struct translate *,
 104                        unsigned i,
 105                        const void *ptr,
 106                        unsigned stride,
 107                        unsigned max_index );
 108
 109    run_elts_func run_elts;
 110    run_elts16_func run_elts16;
 111    run_elts8_func run_elts8;
 112    run_func run;
 113 };
 114
 115
 116
 117 struct translate *translate_create( const struct translate_key *key );
 118
 119 boolean translate_is_output_format_supported(enum pipe_format format);
 120
 121 static INLINE int translate_keysize( const struct translate_key *key )
 122 {
 123    return 2 * sizeof(int) + key->nr_elements * sizeof(struct translate_element);
 124 }
 125
 126 static INLINE int translate_key_compare( const struct translate_key *a,
 127                                          const struct translate_key *b )
 128 {
 129    int keysize_a = translate_keysize(a);
 130    int keysize_b = translate_keysize(b);
 131
 132    if (keysize_a != keysize_b) {
 133       return keysize_a - keysize_b;
 134    }
 135    return memcmp(a, b, keysize_a);
 136 }
 137
 138
 139 static INLINE void translate_key_sanitize( struct translate_key *a )
 140 {
 141    int keysize = translate_keysize(a);
 142    char *ptr = (char *)a;
 143    memset(ptr + keysize, 0, sizeof(*a) - keysize);
 144 }
 145
 146
 147 /*******************************************************************************
 148  *  Private:
 149  */
 150 struct translate *translate_sse2_create( const struct translate_key *key );
 151
 152 struct translate *translate_generic_create( const struct translate_key *key );
 153
 154 boolean translate_generic_is_output_format_supported(enum pipe_format format);
 155
 156 #endif