1 /************************************************************************** 2 * 3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 /* Authors: Keith Whitwell <keith (at) tungstengraphics.com> 29 */ 30 31 #ifndef DRAW_VS_H 32 #define DRAW_VS_H 33 34 #include "draw_context.h" 35 #include "draw_private.h" 36 #include "draw_vertex.h" 37 38 39 struct draw_context; 40 struct pipe_shader_state; 41 42 struct draw_variant_input 43 { 44 enum pipe_format format; 45 unsigned buffer; 46 unsigned offset; 47 unsigned instance_divisor; 48 }; 49 50 struct draw_variant_output 51 { 52 enum attrib_emit format; /* output format */ 53 unsigned vs_output:8; /* which vertex shader output is this? */ 54 unsigned offset:24; /* offset into output vertex */ 55 }; 56 57 struct draw_variant_element { 58 struct draw_variant_input in; 59 struct draw_variant_output out; 60 }; 61 62 struct draw_vs_variant_key { 63 unsigned output_stride; 64 unsigned nr_elements:8; /* max2(nr_inputs, nr_outputs) */ 65 unsigned nr_inputs:8; 66 unsigned nr_outputs:8; 67 unsigned viewport:1; 68 unsigned clip:1; 69 unsigned const_vbuffers:5; 70 struct draw_variant_element element[PIPE_MAX_ATTRIBS]; 71 }; 72 73 struct draw_vs_variant; 74 75 76 struct draw_vs_variant { 77 struct draw_vs_variant_key key; 78 79 struct draw_vertex_shader *vs; 80 81 void (*set_buffer)( struct draw_vs_variant *, 82 unsigned i, 83 const void *ptr, 84 unsigned stride, 85 unsigned max_stride ); 86 87 void (PIPE_CDECL *run_linear)( struct draw_vs_variant *shader, 88 unsigned start, 89 unsigned count, 90 void *output_buffer ); 91 92 void (PIPE_CDECL *run_elts)( struct draw_vs_variant *shader, 93 const unsigned *elts, 94 unsigned count, 95 void *output_buffer ); 96 97 void (*destroy)( struct draw_vs_variant * ); 98 }; 99 100 101 /** 102 * Private version of the compiled vertex_shader 103 */ 104 struct draw_vertex_shader { 105 struct draw_context *draw; 106 107 /* This member will disappear shortly: 108 */ 109 struct pipe_shader_state state; 110 111 struct tgsi_shader_info info; 112 unsigned position_output; 113 unsigned edgeflag_output; 114 unsigned clipvertex_output; 115 unsigned clipdistance_output[2]; 116 /* Extracted from shader: 117 */ 118 const float (*immediates)[4]; 119 120 /* 121 */ 122 struct draw_vs_variant *variant[16]; 123 unsigned nr_variants; 124 unsigned last_variant; 125 struct draw_vs_variant *(*create_variant)( struct draw_vertex_shader *shader, 126 const struct draw_vs_variant_key *key ); 127 128 129 void (*prepare)( struct draw_vertex_shader *shader, 130 struct draw_context *draw ); 131 132 /* Run the shader - this interface will get cleaned up in the 133 * future: 134 */ 135 void (*run_linear)( struct draw_vertex_shader *shader, 136 const float (*input)[4], 137 float (*output)[4], 138 const void *constants[PIPE_MAX_CONSTANT_BUFFERS], 139 const unsigned const_size[PIPE_MAX_CONSTANT_BUFFERS], 140 unsigned count, 141 unsigned input_stride, 142 unsigned output_stride ); 143 144 145 void (*delete)( struct draw_vertex_shader * ); 146 }; 147 148 149 struct draw_vs_variant * 150 draw_vs_lookup_variant( struct draw_vertex_shader *base, 151 const struct draw_vs_variant_key *key ); 152 153 154 /******************************************************************************** 155 * Internal functions: 156 */ 157 158 struct draw_vertex_shader * 159 draw_create_vs_exec(struct draw_context *draw, 160 const struct pipe_shader_state *templ); 161 162 struct draw_vertex_shader * 163 draw_create_vs_ppc(struct draw_context *draw, 164 const struct pipe_shader_state *templ); 165 166 167 struct draw_vs_variant_key; 168 struct draw_vertex_shader; 169 170 #if HAVE_LLVM 171 struct draw_vertex_shader * 172 draw_create_vs_llvm(struct draw_context *draw, 173 const struct pipe_shader_state *state); 174 #endif 175 176 177 /******************************************************************************** 178 * Helpers for vs implementations that don't do their own fetch/emit variants. 179 * Means these can be shared between shaders. 180 */ 181 struct translate; 182 struct translate_key; 183 184 struct translate *draw_vs_get_fetch( struct draw_context *draw, 185 struct translate_key *key ); 186 187 188 struct translate *draw_vs_get_emit( struct draw_context *draw, 189 struct translate_key *key ); 190 191 struct draw_vs_variant * 192 draw_vs_create_variant_generic( struct draw_vertex_shader *vs, 193 const struct draw_vs_variant_key *key ); 194 195 196 197 static INLINE int draw_vs_variant_keysize( const struct draw_vs_variant_key *key ) 198 { 199 return 2 * sizeof(int) + key->nr_elements * sizeof(struct draw_variant_element); 200 } 201 202 static INLINE int draw_vs_variant_key_compare( const struct draw_vs_variant_key *a, 203 const struct draw_vs_variant_key *b ) 204 { 205 int keysize = draw_vs_variant_keysize(a); 206 return memcmp(a, b, keysize); 207 } 208 209 210 #define MAX_TGSI_VERTICES 4 211 212 213 214 #endif 215
