src/gallium/drivers/svga/svga_pipe_vs.c

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "draw/draw_context.h"
  27 #include "util/u_inlines.h"
  28 #include "util/u_math.h"
  29 #include "util/u_memory.h"
  30 #include "util/u_bitmask.h"
  31 #include "tgsi/tgsi_parse.h"
  32 #include "tgsi/tgsi_text.h"
  33
  34 #include "svga_context.h"
  35 #include "svga_tgsi.h"
  36 #include "svga_hw_reg.h"
  37 #include "svga_cmd.h"
  38 #include "svga_debug.h"
  39
  40
  41 static const struct tgsi_token *substitute_vs(
  42    unsigned shader_id,
  43    const struct tgsi_token *old_tokens )
  44 {
  45 #if 0
  46    if (shader_id == 12) {
  47    static struct tgsi_token tokens[300];
  48
  49    const char *text =
  50       "VERT\n"
  51       "DCL IN[0]\n"
  52       "DCL IN[1]\n"
  53       "DCL IN[2]\n"
  54       "DCL OUT[0], POSITION\n"
  55       "DCL TEMP[0..4]\n"
  56       "IMM FLT32 {     1.0000,     1.0000,     1.0000,     1.0000 }\n"
  57       "IMM FLT32 {     0.45,     1.0000,     1.0000,     1.0000 }\n"
  58       "IMM FLT32 { 1.297863, 0.039245, 0.035993, 0.035976}\n"
  59       "IMM FLT32 { -0.019398, 1.696131, -0.202151, -0.202050  }\n"
  60       "IMM FLT32 { 0.051711, -0.348713, -0.979204, -0.978714  }\n"
  61       "IMM FLT32 { 0.000000, 0.000003, 139.491577, 141.421356 }\n"
  62       "DCL CONST[0..7]\n"
  63       "DCL CONST[9..16]\n"
  64       "  MOV TEMP[2], IMM[0]\n"
  65
  66       "  MOV TEMP[2].xyz, IN[2]\n"
  67       "  MOV TEMP[2].xyz, IN[0]\n"
  68       "  MOV TEMP[2].xyz, IN[1]\n"
  69
  70       "  MUL TEMP[1], IMM[3], TEMP[2].yyyy\n"
  71       "  MAD TEMP[3], IMM[2],  TEMP[2].xxxx, TEMP[1]\n"
  72       "  MAD TEMP[1], IMM[4], TEMP[2].zzzz, TEMP[3]\n"
  73       "  MAD TEMP[4], IMM[5], TEMP[2].wwww, TEMP[1]\n"
  74
  75       "  MOV OUT[0], TEMP[4]\n"
  76       "  END\n";
  77
  78    if (!tgsi_text_translate( text,
  79                              tokens,
  80                              Elements(tokens) ))
  81    {
  82       assert(0);
  83       return NULL;
  84    }
  85
  86    return tokens;
  87    }
  88 #endif
  89
  90    return old_tokens;
  91 }
  92
  93
  94 /***********************************************************************
  95  * Vertex shaders
  96  */
  97
  98 static void *
  99 svga_create_vs_state(struct pipe_context *pipe,
 100                      const struct pipe_shader_state *templ)
 101 {
 102    struct svga_context *svga = svga_context(pipe);
 103    struct svga_vertex_shader *vs = CALLOC_STRUCT(svga_vertex_shader);
 104    if (!vs)
 105       return NULL;
 106
 107    /* substitute a debug shader?
 108     */
 109    vs->base.tokens = tgsi_dup_tokens(substitute_vs(svga->debug.shader_id,
 110                                                    templ->tokens));
 111
 112
 113    /* Collect basic info that we'll need later:
 114     */
 115    tgsi_scan_shader(vs->base.tokens, &vs->base.info);
 116
 117    {
 118       /* Need to do construct a new template in case we substitued a
 119        * debug shader.
 120        */
 121       struct pipe_shader_state tmp2 = *templ;
 122       tmp2.tokens = vs->base.tokens;
 123       vs->draw_shader = draw_create_vertex_shader(svga->swtnl.draw, &tmp2);
 124    }
 125
 126    vs->base.id = svga->debug.shader_id++;
 127
 128    if (SVGA_DEBUG & DEBUG_TGSI || 0) {
 129       debug_printf("%s id: %u, inputs: %u, outputs: %u\n",
 130                    __FUNCTION__, vs->base.id,
 131                    vs->base.info.num_inputs, vs->base.info.num_outputs);
 132    }
 133
 134    return vs;
 135 }
 136
 137 static void svga_bind_vs_state(struct pipe_context *pipe, void *shader)
 138 {
 139    struct svga_vertex_shader *vs = (struct svga_vertex_shader *)shader;
 140    struct svga_context *svga = svga_context(pipe);
 141
 142    svga->curr.vs = vs;
 143    svga->dirty |= SVGA_NEW_VS;
 144 }
 145
 146
 147 static void svga_delete_vs_state(struct pipe_context *pipe, void *shader)
 148 {
 149    struct svga_context *svga = svga_context(pipe);
 150    struct svga_vertex_shader *vs = (struct svga_vertex_shader *)shader;
 151    struct svga_shader_result *result, *tmp;
 152    enum pipe_error ret;
 153
 154    svga_hwtnl_flush_retry( svga );
 155
 156    draw_delete_vertex_shader(svga->swtnl.draw, vs->draw_shader);
 157
 158    for (result = vs->base.results; result; result = tmp ) {
 159       tmp = result->next;
 160
 161       ret = SVGA3D_DestroyShader(svga->swc,
 162                                  result->id,
 163                                  SVGA3D_SHADERTYPE_VS );
 164       if(ret != PIPE_OK) {
 165          svga_context_flush(svga, NULL);
 166          ret = SVGA3D_DestroyShader(svga->swc,
 167                                     result->id,
 168                                     SVGA3D_SHADERTYPE_VS );
 169          assert(ret == PIPE_OK);
 170       }
 171
 172       util_bitmask_clear( svga->vs_bm, result->id );
 173
 174       svga_destroy_shader_result( result );
 175
 176       /*
 177        * Remove stale references to this result to ensure a new result on the
 178        * same address will be detected as a change.
 179        */
 180       if(result == svga->state.hw_draw.vs)
 181          svga->state.hw_draw.vs = NULL;
 182    }
 183
 184    FREE((void *)vs->base.tokens);
 185    FREE(vs);
 186 }
 187
 188
 189 void svga_init_vs_functions( struct svga_context *svga )
 190 {
 191    svga->pipe.create_vs_state = svga_create_vs_state;
 192    svga->pipe.bind_vs_state = svga_bind_vs_state;
 193    svga->pipe.delete_vs_state = svga_delete_vs_state;
 194 }
 195