src/gallium/auxiliary/draw/draw_vs_ppc.c

   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@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 float (*constants)[4],
  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,
 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 #if 0
 189    if (1)
 190       vs->base.create_varient = draw_vs_varient_aos_ppc;
 191    else
 192 #endif
 193       vs->base.create_varient = draw_vs_varient_generic;
 194    vs->base.prepare = vs_ppc_prepare;
 195    vs->base.run_linear = vs_ppc_run_linear;
 196    vs->base.delete = vs_ppc_delete;
 197
 198    vs->base.immediates = align_malloc(TGSI_EXEC_NUM_IMMEDIATES * 4 *
 199                                       sizeof(float), 16);
 200
 201    ppc_init_func( &vs->ppc_program );
 202
 203 #if 0
 204    ppc_print_code(&vs->ppc_program, TRUE);
 205    ppc_indent(&vs->ppc_program, 8);
 206 #endif
 207
 208    if (!tgsi_emit_ppc( (struct tgsi_token *) vs->base.state.tokens,
 209                         &vs->ppc_program,
 210                        (float (*)[4]) vs->base.immediates,
 211                         TRUE ))
 212       goto fail;
 213
 214    vs->func = (codegen_function) ppc_get_func( &vs->ppc_program );
 215    if (!vs->func) {
 216       goto fail;
 217    }
 218
 219    return &vs->base;
 220
 221 fail:
 222    /*
 223    debug_error("tgsi_emit_ppc() failed, falling back to interpreter\n");
 224    */
 225
 226    ppc_release_func( &vs->ppc_program );
 227
 228    FREE(vs);
 229    return NULL;
 230 }
 231
 232
 233
 234 #else /* PIPE_ARCH_PPC */
 235
 236
 237 struct draw_vertex_shader *
 238 draw_create_vs_ppc( struct draw_context *draw,
 239                     const struct pipe_shader_state *templ )
 240 {
 241    return (void *) 0;
 242 }
 243
 244
 245 #endif /* PIPE_ARCH_PPC */