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Member "mesa-20.1.8/src/gallium/auxiliary/translate/translate.h" (16 Sep 2020, 5569 Bytes) of package /linux/misc/mesa-20.1.8.tar.xz:


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    1 /*
    2  * Copyright 2008 VMware, 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  * VMWARE 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@vmware.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 /**
   48  * Translate has to work on one more attribute because
   49  * the draw module has to be able to pass the vertex
   50  * position even if the fragment shader already consumes
   51  * PIPE_MAX_ATTRIBS inputs.
   52  */
   53 #define TRANSLATE_MAX_ATTRIBS (PIPE_MAX_ATTRIBS + 1)
   54 
   55 enum translate_element_type {
   56    TRANSLATE_ELEMENT_NORMAL,
   57    TRANSLATE_ELEMENT_INSTANCE_ID
   58 };
   59 
   60 struct translate_element 
   61 {
   62    enum translate_element_type type;
   63    enum pipe_format input_format;
   64    enum pipe_format output_format;
   65    unsigned input_buffer:8;
   66    unsigned input_offset:24;
   67    unsigned instance_divisor;
   68    unsigned output_offset;
   69 };
   70 
   71 
   72 struct translate_key {
   73    unsigned output_stride;
   74    unsigned nr_elements;
   75    struct translate_element element[TRANSLATE_MAX_ATTRIBS];
   76 };
   77 
   78 
   79 struct translate;
   80 
   81 
   82 typedef void (PIPE_CDECL *run_elts_func)(struct translate *,
   83                                          const unsigned *elts,
   84                                          unsigned count,
   85                                          unsigned start_instance,
   86                                          unsigned instance_id,
   87                                          void *output_buffer);
   88 
   89 typedef void (PIPE_CDECL *run_elts16_func)(struct translate *,
   90                                            const uint16_t *elts,
   91                                            unsigned count,
   92                                            unsigned start_instance,
   93                                            unsigned instance_id,
   94                                            void *output_buffer);
   95 
   96 typedef void (PIPE_CDECL *run_elts8_func)(struct translate *,
   97                                           const uint8_t *elts,
   98                                           unsigned count,
   99                                           unsigned start_instance,
  100                                           unsigned instance_id,
  101                                           void *output_buffer);
  102 
  103 typedef void (PIPE_CDECL *run_func)(struct translate *,
  104                                     unsigned start,
  105                                     unsigned count,
  106                                     unsigned start_instance,
  107                                     unsigned instance_id,
  108                                     void *output_buffer);
  109 
  110 struct translate {
  111    struct translate_key key;
  112 
  113    void (*release)( struct translate * );
  114 
  115    void (*set_buffer)( struct translate *,
  116                unsigned i,
  117                const void *ptr,
  118                unsigned stride,
  119                unsigned max_index );
  120 
  121    run_elts_func run_elts;
  122    run_elts16_func run_elts16;
  123    run_elts8_func run_elts8;
  124    run_func run;
  125 };
  126 
  127 
  128 
  129 struct translate *translate_create( const struct translate_key *key );
  130 
  131 boolean translate_is_output_format_supported(enum pipe_format format);
  132 
  133 static inline int translate_keysize( const struct translate_key *key )
  134 {
  135    return 2 * sizeof(int) + key->nr_elements * sizeof(struct translate_element);
  136 }
  137 
  138 static inline int translate_key_compare( const struct translate_key *a,
  139                                          const struct translate_key *b )
  140 {
  141    int keysize_a = translate_keysize(a);
  142    int keysize_b = translate_keysize(b);
  143 
  144    if (keysize_a != keysize_b) {
  145       return keysize_a - keysize_b;
  146    }
  147    return memcmp(a, b, keysize_a);
  148 }
  149 
  150 
  151 static inline void translate_key_sanitize( struct translate_key *a )
  152 {
  153    int keysize = translate_keysize(a);
  154    char *ptr = (char *)a;
  155    memset(ptr + keysize, 0, sizeof(*a) - keysize);
  156 }
  157 
  158 
  159 /*******************************************************************************
  160  *  Private:
  161  */
  162 struct translate *translate_sse2_create( const struct translate_key *key );
  163 
  164 struct translate *translate_generic_create( const struct translate_key *key );
  165 
  166 boolean translate_generic_is_output_format_supported(enum pipe_format format);
  167 
  168 #endif