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
  52
  53
  54 typedef void (PIPE_CDECL *codegen_function) (float (*inputs)[4][4],
  55                                              float (*outputs)[4][4],
  56                                              float (*temps)[4][4],
  57                                              float (*immeds)[4],
  58                                              float (*consts)[4],
  59                                              const float *builtins);
  60
  61
  62 struct draw_ppc_vertex_shader {
  63    struct draw_vertex_shader base;
  64    struct ppc_function ppc_program;
  65
  66    codegen_function func;
  67 };
  68
  69
  70 static void
  71 vs_ppc_prepare( struct draw_vertex_shader *base,
  72                 struct draw_context *draw )
  73 {
  74    /* nothing */
  75 }
  76
  77
  78 /**
  79  * Simplified vertex shader interface for the pt paths.  Given the
  80  * complexity of code-generating all the above operations together,
  81  * it's time to try doing all the other stuff separately.
  82  */
  83 static void
  84 vs_ppc_run_linear( struct draw_vertex_shader *base,
  85                    const float (*input)[4],
  86                    float (*output)[4],
  87                    const float (*constants)[4],
  88                    unsigned count,
  89                    unsigned input_stride,
  90                    unsigned output_stride )
  91 {
  92    struct draw_ppc_vertex_shader *shader = (struct draw_ppc_vertex_shader *)base;
  93    unsigned int i;
  94
  95 #define MAX_VERTICES 4
  96
  97    /* loop over verts */
  98    for (i = 0; i < count; i += MAX_VERTICES) {
  99       const uint max_vertices = MIN2(MAX_VERTICES, count - i);
 100       float inputs_soa[PIPE_MAX_SHADER_INPUTS][4][4] ALIGN16_ATTRIB;
 101       float outputs_soa[PIPE_MAX_SHADER_OUTPUTS][4][4] ALIGN16_ATTRIB;
 102       float temps_soa[TGSI_EXEC_NUM_TEMPS][4][4] ALIGN16_ATTRIB;
 103       uint attr;
 104
 105       /* convert (up to) four input verts to SoA format */
 106       for (attr = 0; attr < base->info.num_inputs; attr++) {
 107          const float *vIn = (const float *) input;
 108          uint vert;
 109          for (vert = 0; vert < max_vertices; vert++) {
 110 #if 0
 111             if (attr==0)
 112                printf("Input v%d a%d: %f %f %f %f\n",
 113                       vert, attr, vIn[0], vIn[1], vIn[2], vIn[3]);
 114 #endif
 115             inputs_soa[attr][0][vert] = vIn[attr * 4 + 0];
 116             inputs_soa[attr][1][vert] = vIn[attr * 4 + 1];
 117             inputs_soa[attr][2][vert] = vIn[attr * 4 + 2];
 118             inputs_soa[attr][3][vert] = vIn[attr * 4 + 3];
 119             vIn += input_stride / 4;
 120          }
 121       }
 122
 123       /* run compiled shader
 124        */
 125       shader->func(inputs_soa, outputs_soa, temps_soa,
 126                    (float (*)[4]) shader->base.immediates,
 127                    (float (*)[4]) constants,
 128                    ppc_builtin_constants);
 129
 130       /* convert (up to) four output verts from SoA back to AoS format */
 131       for (attr = 0; attr < base->info.num_outputs; attr++) {
 132          float *vOut = (float *) output;
 133          uint vert;
 134          for (vert = 0; vert < max_vertices; vert++) {
 135             vOut[attr * 4 + 0] = outputs_soa[attr][0][vert];
 136             vOut[attr * 4 + 1] = outputs_soa[attr][1][vert];
 137             vOut[attr * 4 + 2] = outputs_soa[attr][2][vert];
 138             vOut[attr * 4 + 3] = outputs_soa[attr][3][vert];
 139 #if 0
 140             if (attr==0)
 141                printf("Output v%d a%d: %f %f %f %f\n",
 142                       vert, attr, vOut[0], vOut[1], vOut[2], vOut[3]);
 143 #endif
 144             vOut += output_stride / 4;
 145          }
 146       }
 147
 148       /* advance to next group of four input/output verts */
 149       input = (const float (*)[4])((const char *)input + input_stride * max_vertices);
 150       output = (float (*)[4])((char *)output + output_stride * max_vertices);
 151    }
 152 }
 153
 154
 155 static void
 156 vs_ppc_delete( struct draw_vertex_shader *base )
 157 {
 158    struct draw_ppc_vertex_shader *shader = (struct draw_ppc_vertex_shader *)base;
 159
 160    ppc_release_func( &shader->ppc_program );
 161
 162    align_free( (void *) shader->base.immediates );
 163
 164    FREE( (void*) shader->base.state.tokens );
 165    FREE( shader );
 166 }
 167
 168
 169 struct draw_vertex_shader *
 170 draw_create_vs_ppc(struct draw_context *draw,
 171                    const struct pipe_shader_state *templ)
 172 {
 173    struct draw_ppc_vertex_shader *vs;
 174
 175    vs = CALLOC_STRUCT( draw_ppc_vertex_shader );
 176    if (vs == NULL)
 177       return NULL;
 178
 179    /* we make a private copy of the tokens */
 180    vs->base.state.tokens = tgsi_dup_tokens(templ->tokens);
 181    if (!vs->base.state.tokens)
 182       goto fail;
 183
 184    tgsi_scan_shader(templ->tokens, &vs->base.info);
 185
 186    vs->base.draw = draw;
 187 #if 0
 188    if (1)
 189       vs->base.create_varient = draw_vs_varient_aos_ppc;
 190    else
 191 #endif
 192       vs->base.create_varient = draw_vs_varient_generic;
 193    vs->base.prepare = vs_ppc_prepare;
 194    vs->base.run_linear = vs_ppc_run_linear;
 195    vs->base.delete = vs_ppc_delete;
 196
 197    vs->base.immediates = align_malloc(TGSI_EXEC_NUM_IMMEDIATES * 4 *
 198                                       sizeof(float), 16);
 199
 200    ppc_init_func( &vs->ppc_program );
 201
 202    if (!tgsi_emit_ppc( (struct tgsi_token *) vs->base.state.tokens,
 203                         &vs->ppc_program,
 204                        (float (*)[4]) vs->base.immediates,
 205                         TRUE ))
 206       goto fail;
 207
 208    vs->func = (codegen_function) ppc_get_func( &vs->ppc_program );
 209    if (!vs->func) {
 210       goto fail;
 211    }
 212
 213    return &vs->base;
 214
 215 fail:
 216    /*
 217    debug_error("tgsi_emit_ppc() failed, falling back to interpreter\n");
 218    */
 219
 220    ppc_release_func( &vs->ppc_program );
 221
 222    FREE(vs);
 223    return NULL;
 224 }
 225
 226
 227
 228 #else /* PIPE_ARCH_PPC */
 229
 230
 231 struct draw_vertex_shader *
 232 draw_create_vs_ppc( struct draw_context *draw,
 233                     const struct pipe_shader_state *templ )
 234 {
 235    return (void *) 0;
 236 }
 237
 238
 239 #endif /* PIPE_ARCH_PPC */