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 (at) 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 157
