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 (at) 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 169
