1 /************************************************************************** 2 * 3 * Copyright 2008 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 /* 29 * Authors: 30 * Keith Whitwell <keith (at) tungstengraphics.com> 31 * Brian Paul 32 */ 33 34 #include "util/u_math.h" 35 #include "util/u_memory.h" 36 #include "pipe/p_config.h" 37 38 #include "draw_vs.h" 39 40 #if defined(PIPE_ARCH_PPC) 41 42 #include "pipe/p_shader_tokens.h" 43 44 #include "draw_private.h" 45 #include "draw_context.h" 46 47 #include "rtasm/rtasm_cpu.h" 48 #include "rtasm/rtasm_ppc.h" 49 #include "tgsi/tgsi_ppc.h" 50 #include "tgsi/tgsi_parse.h" 51 #include "tgsi/tgsi_exec.h" 52 53 54 55 typedef void (PIPE_CDECL *codegen_function) (float (*inputs)[4][4], 56 float (*outputs)[4][4], 57 float (*temps)[4][4], 58 float (*immeds)[4], 59 float (*consts)[4], 60 const float *builtins); 61 62 63 struct draw_ppc_vertex_shader { 64 struct draw_vertex_shader base; 65 struct ppc_function ppc_program; 66 67 codegen_function func; 68 }; 69 70 71 static void 72 vs_ppc_prepare( struct draw_vertex_shader *base, 73 struct draw_context *draw ) 74 { 75 /* nothing */ 76 } 77 78 79 /** 80 * Simplified vertex shader interface for the pt paths. Given the 81 * complexity of code-generating all the above operations together, 82 * it's time to try doing all the other stuff separately. 83 */ 84 static void 85 vs_ppc_run_linear( struct draw_vertex_shader *base, 86 const float (*input)[4], 87 float (*output)[4], 88 const void *constants[PIPE_MAX_CONSTANT_BUFFERS], 89 unsigned count, 90 unsigned input_stride, 91 unsigned output_stride ) 92 { 93 struct draw_ppc_vertex_shader *shader = (struct draw_ppc_vertex_shader *)base; 94 unsigned int i; 95 96 #define MAX_VERTICES 4 97 98 /* loop over verts */ 99 for (i = 0; i < count; i += MAX_VERTICES) { 100 const uint max_vertices = MIN2(MAX_VERTICES, count - i); 101 PIPE_ALIGN_VAR(16) float inputs_soa[PIPE_MAX_SHADER_INPUTS][4][4]; 102 PIPE_ALIGN_VAR(16) float outputs_soa[PIPE_MAX_SHADER_OUTPUTS][4][4]; 103 PIPE_ALIGN_VAR(16) float temps_soa[TGSI_EXEC_NUM_TEMPS][4][4]; 104 uint attr; 105 106 /* convert (up to) four input verts to SoA format */ 107 for (attr = 0; attr < base->info.num_inputs; attr++) { 108 const float *vIn = (const float *) input; 109 uint vert; 110 for (vert = 0; vert < max_vertices; vert++) { 111 #if 0 112 if (attr==0) 113 printf("Input v%d a%d: %f %f %f %f\n", 114 vert, attr, vIn[0], vIn[1], vIn[2], vIn[3]); 115 #endif 116 inputs_soa[attr][0][vert] = vIn[attr * 4 + 0]; 117 inputs_soa[attr][1][vert] = vIn[attr * 4 + 1]; 118 inputs_soa[attr][2][vert] = vIn[attr * 4 + 2]; 119 inputs_soa[attr][3][vert] = vIn[attr * 4 + 3]; 120 vIn += input_stride / 4; 121 } 122 } 123 124 /* run compiled shader 125 */ 126 shader->func(inputs_soa, outputs_soa, temps_soa, 127 (float (*)[4]) shader->base.immediates, 128 (float (*)[4])constants[0], 129 ppc_builtin_constants); 130 131 /* convert (up to) four output verts from SoA back to AoS format */ 132 for (attr = 0; attr < base->info.num_outputs; attr++) { 133 float *vOut = (float *) output; 134 uint vert; 135 for (vert = 0; vert < max_vertices; vert++) { 136 vOut[attr * 4 + 0] = outputs_soa[attr][0][vert]; 137 vOut[attr * 4 + 1] = outputs_soa[attr][1][vert]; 138 vOut[attr * 4 + 2] = outputs_soa[attr][2][vert]; 139 vOut[attr * 4 + 3] = outputs_soa[attr][3][vert]; 140 #if 0 141 if (attr==0) 142 printf("Output v%d a%d: %f %f %f %f\n", 143 vert, attr, vOut[0], vOut[1], vOut[2], vOut[3]); 144 #endif 145 vOut += output_stride / 4; 146 } 147 } 148 149 /* advance to next group of four input/output verts */ 150 input = (const float (*)[4])((const char *)input + input_stride * max_vertices); 151 output = (float (*)[4])((char *)output + output_stride * max_vertices); 152 } 153 } 154 155 156 static void 157 vs_ppc_delete( struct draw_vertex_shader *base ) 158 { 159 struct draw_ppc_vertex_shader *shader = (struct draw_ppc_vertex_shader *)base; 160 161 ppc_release_func( &shader->ppc_program ); 162 163 align_free( (void *) shader->base.immediates ); 164 165 FREE( (void*) shader->base.state.tokens ); 166 FREE( shader ); 167 } 168 169 170 struct draw_vertex_shader * 171 draw_create_vs_ppc(struct draw_context *draw, 172 const struct pipe_shader_state *templ) 173 { 174 struct draw_ppc_vertex_shader *vs; 175 176 vs = CALLOC_STRUCT( draw_ppc_vertex_shader ); 177 if (vs == NULL) 178 return NULL; 179 180 /* we make a private copy of the tokens */ 181 vs->base.state.tokens = tgsi_dup_tokens(templ->tokens); 182 if (!vs->base.state.tokens) 183 goto fail; 184 185 tgsi_scan_shader(templ->tokens, &vs->base.info); 186 187 vs->base.draw = draw; 188 vs->base.create_variant = draw_vs_create_variant_generic; 189 vs->base.prepare = vs_ppc_prepare; 190 vs->base.run_linear = vs_ppc_run_linear; 191 vs->base.delete = vs_ppc_delete; 192 193 vs->base.immediates = align_malloc(TGSI_EXEC_NUM_IMMEDIATES * 4 * 194 sizeof(float), 16); 195 196 ppc_init_func( &vs->ppc_program ); 197 198 #if 0 199 ppc_print_code(&vs->ppc_program, TRUE); 200 ppc_indent(&vs->ppc_program, 8); 201 #endif 202 203 if (!tgsi_emit_ppc( (struct tgsi_token *) vs->base.state.tokens, 204 &vs->ppc_program, 205 (float (*)[4]) vs->base.immediates, 206 TRUE )) 207 goto fail; 208 209 vs->func = (codegen_function) ppc_get_func( &vs->ppc_program ); 210 if (!vs->func) { 211 goto fail; 212 } 213 214 return &vs->base; 215 216 fail: 217 /* 218 debug_error("tgsi_emit_ppc() failed, falling back to interpreter\n"); 219 */ 220 221 ppc_release_func( &vs->ppc_program ); 222 223 FREE(vs); 224 return NULL; 225 } 226 227 228 229 #else /* PIPE_ARCH_PPC */ 230 231 232 struct draw_vertex_shader * 233 draw_create_vs_ppc( struct draw_context *draw, 234 const struct pipe_shader_state *templ ) 235 { 236 return (void *) 0; 237 } 238 239 240 #endif /* PIPE_ARCH_PPC */ 241
