src/gallium/auxiliary/draw/draw_vs_sse.c

   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  /*
  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_X86) && defined(PIPE_ARCH_SSE)
  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_x86sse.h"
  49 #include "tgsi/tgsi_sse2.h"
  50 #include "tgsi/tgsi_parse.h"
  51
  52 #define SSE_MAX_VERTICES 4
  53
  54 typedef void (PIPE_CDECL *codegen_function) (
  55    const struct tgsi_exec_vector *input, /* 1 */
  56    struct tgsi_exec_vector *output, /* 2 */
  57    float (*constant)[4],        /* 3 */
  58    struct tgsi_exec_vector *temporary, /* 4 */
  59    float (*immediates)[4],      /* 5 */
  60    const float (*aos_input)[4], /* 6 */
  61    uint num_inputs,             /* 7 */
  62    uint input_stride,           /* 8 */
  63    float (*aos_output)[4],      /* 9 */
  64    uint num_outputs,            /* 10 */
  65    uint output_stride );        /* 11 */
  66
  67 struct draw_sse_vertex_shader {
  68    struct draw_vertex_shader base;
  69    struct x86_function sse2_program;
  70
  71    codegen_function func;
  72
  73    struct tgsi_exec_machine *machine;
  74 };
  75
  76
  77 static void
  78 vs_sse_prepare( struct draw_vertex_shader *base,
  79                 struct draw_context *draw )
  80 {
  81 }
  82
  83
  84
  85 /* Simplified vertex shader interface for the pt paths.  Given the
  86  * complexity of code-generating all the above operations together,
  87  * it's time to try doing all the other stuff separately.
  88  */
  89 static void
  90 vs_sse_run_linear( struct draw_vertex_shader *base,
  91                    const float (*input)[4],
  92                    float (*output)[4],
  93                    const float (*constants)[4],
  94                    unsigned count,
  95                    unsigned input_stride,
  96                    unsigned output_stride )
  97 {
  98    struct draw_sse_vertex_shader *shader = (struct draw_sse_vertex_shader *)base;
  99    struct tgsi_exec_machine *machine = shader->machine;
 100    unsigned int i;
 101
 102    for (i = 0; i < count; i += MAX_TGSI_VERTICES) {
 103       unsigned int max_vertices = MIN2(MAX_TGSI_VERTICES, count - i);
 104
 105       /* run compiled shader
 106        */
 107       shader->func(machine->Inputs,
 108                    machine->Outputs,
 109                    (float (*)[4])constants,
 110                    machine->Temps,
 111                    (float (*)[4])shader->base.immediates,
 112                    input,
 113                    base->info.num_inputs,
 114                    input_stride,
 115                    output,
 116                    base->info.num_outputs,
 117                    output_stride );
 118
 119       input = (const float (*)[4])((const char *)input + input_stride * max_vertices);
 120       output = (float (*)[4])((char *)output + output_stride * max_vertices);
 121    }
 122 }
 123
 124
 125
 126
 127 static void
 128 vs_sse_delete( struct draw_vertex_shader *base )
 129 {
 130    struct draw_sse_vertex_shader *shader = (struct draw_sse_vertex_shader *)base;
 131
 132    x86_release_func( &shader->sse2_program );
 133
 134    align_free( (void *) shader->base.immediates );
 135
 136    FREE( (void*) shader->base.state.tokens );
 137    FREE( shader );
 138 }
 139
 140
 141 struct draw_vertex_shader *
 142 draw_create_vs_sse(struct draw_context *draw,
 143                           const struct pipe_shader_state *templ)
 144 {
 145    struct draw_sse_vertex_shader *vs;
 146
 147    if (!rtasm_cpu_has_sse2())
 148       return NULL;
 149
 150    vs = CALLOC_STRUCT( draw_sse_vertex_shader );
 151    if (vs == NULL)
 152       return NULL;
 153
 154    /* we make a private copy of the tokens */
 155    vs->base.state.tokens = tgsi_dup_tokens(templ->tokens);
 156    if (!vs->base.state.tokens)
 157       goto fail;
 158
 159    tgsi_scan_shader(templ->tokens, &vs->base.info);
 160
 161    vs->base.draw = draw;
 162    if (1)
 163       vs->base.create_varient = draw_vs_varient_aos_sse;
 164    else
 165       vs->base.create_varient = draw_vs_varient_generic;
 166    vs->base.prepare = vs_sse_prepare;
 167    vs->base.run_linear = vs_sse_run_linear;
 168    vs->base.delete = vs_sse_delete;
 169
 170    vs->base.immediates = align_malloc(TGSI_EXEC_NUM_IMMEDIATES * 4 *
 171                                       sizeof(float), 16);
 172
 173    vs->machine = &draw->vs.machine;
 174
 175    x86_init_func( &vs->sse2_program );
 176
 177    if (!tgsi_emit_sse2( (struct tgsi_token *) vs->base.state.tokens,
 178                         &vs->sse2_program,
 179                         (float (*)[4])vs->base.immediates,
 180                         TRUE ))
 181       goto fail;
 182
 183    vs->func = (codegen_function) x86_get_func( &vs->sse2_program );
 184    if (!vs->func) {
 185       goto fail;
 186    }
 187
 188    return &vs->base;
 189
 190 fail:
 191    debug_error("tgsi_emit_sse2() failed, falling back to interpreter\n");
 192
 193    x86_release_func( &vs->sse2_program );
 194
 195    FREE(vs);
 196    return NULL;
 197 }
 198
 199
 200
 201 #else
 202
 203 struct draw_vertex_shader *
 204 draw_create_vs_sse( struct draw_context *draw,
 205                     const struct pipe_shader_state *templ )
 206 {
 207    return (void *) 0;
 208 }
 209
 210
 211 #endif
 212