src/gallium/drivers/softpipe/sp_fs_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 #include "sp_context.h"
  30 #include "sp_state.h"
  31 #include "sp_fs.h"
  32 #include "sp_headers.h"
  33
  34
  35 #include "pipe/p_state.h"
  36 #include "pipe/p_defines.h"
  37 #include "pipe/p_util.h"
  38 #include "pipe/p_inlines.h"
  39 #include "tgsi/exec/tgsi_exec.h"
  40 #include "tgsi/exec/tgsi_sse2.h"
  41
  42
  43 #if defined(__i386__) || defined(__386__)
  44
  45 #include "rtasm/rtasm_x86sse.h"
  46
  47 /* Surely this should be defined somewhere in a tgsi header:
  48  */
  49 typedef void (XSTDCALL *codegen_function)(
  50    const struct tgsi_exec_vector *input,
  51    struct tgsi_exec_vector *output,
  52    float (*constant)[4],
  53    struct tgsi_exec_vector *temporary,
  54    const struct tgsi_interp_coef *coef
  55    //, const struct tgsi_exec_vector *quadPos
  56  );
  57
  58
  59 struct sp_sse_fragment_shader {
  60    struct sp_fragment_shader base;
  61    struct x86_function             sse2_program;
  62    codegen_function func;
  63 };
  64
  65
  66
  67 static void
  68 fs_sse_prepare( struct sp_fragment_shader *base,
  69               struct tgsi_exec_machine *machine,
  70               struct tgsi_sampler *samplers )
  71 {
  72 }
  73
  74
  75 /* TODO: codegenerate the whole run function, skip this wrapper.
  76  * TODO: break dependency on tgsi_exec_machine struct
  77  * TODO: push Position calculation into the generated shader
  78  * TODO: process >1 quad at a time
  79  */
  80 static unsigned
  81 fs_sse_run( struct sp_fragment_shader *base,
  82          struct tgsi_exec_machine *machine,
  83          struct quad_header *quad )
  84 {
  85    struct sp_sse_fragment_shader *shader = (struct sp_sse_fragment_shader *) base;
  86
  87    /* Compute X, Y, Z, W vals for this quad -- place in temp[0] for now */
  88    sp_setup_pos_vector(quad->posCoef,
  89                        (float)quad->x0, (float)quad->y0,
  90                        machine->Temps);
  91
  92    /* init kill mask */
  93    machine->Temps[TGSI_EXEC_TEMP_KILMASK_I].xyzw[TGSI_EXEC_TEMP_KILMASK_C].u[0] = 0x0;
  94
  95    shader->func( machine->Inputs,
  96                  machine->Outputs,
  97                  machine->Consts,
  98                  machine->Temps,
  99                  machine->InterpCoefs
 100                  //      , &machine->QuadPos
 101       );
 102
 103    return ~(machine->Temps[TGSI_EXEC_TEMP_KILMASK_I].xyzw[TGSI_EXEC_TEMP_KILMASK_C].u[0]);
 104 }
 105
 106
 107 static void
 108 fs_sse_delete( struct sp_fragment_shader *base )
 109 {
 110    struct sp_sse_fragment_shader *shader = (struct sp_sse_fragment_shader *) base;
 111
 112    x86_release_func( &shader->sse2_program );
 113    FREE(shader);
 114 }
 115
 116
 117 struct sp_fragment_shader *
 118 softpipe_create_fs_sse(struct softpipe_context *softpipe,
 119                        const struct pipe_shader_state *templ)
 120 {
 121    struct sp_sse_fragment_shader *shader;
 122
 123    if (!softpipe->use_sse)
 124       return NULL;
 125
 126    shader = CALLOC_STRUCT(sp_sse_fragment_shader);
 127    if (!shader)
 128       return NULL;
 129
 130    x86_init_func( &shader->sse2_program );
 131
 132    if (!tgsi_emit_sse2_fs( templ->tokens, &shader->sse2_program )) {
 133       FREE(shader);
 134       return NULL;
 135    }
 136
 137    shader->func = (codegen_function) x86_get_func( &shader->sse2_program );
 138    assert(shader->func);
 139
 140    shader->base.shader = *templ;
 141    shader->base.prepare = fs_sse_prepare;
 142    shader->base.run = fs_sse_run;
 143    shader->base.delete = fs_sse_delete;
 144
 145    return &shader->base;
 146 }
 147
 148
 149 #else
 150
 151 /* Maybe put this varient in the header file.
 152  */
 153 struct sp_fragment_shader *
 154 softpipe_create_fs_sse(struct softpipe_context *softpipe,
 155                        const struct pipe_shader_state *templ)
 156 {
 157    return NULL;
 158 }
 159
 160 #endif