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 "pipe/p_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_screen.h"
  35 #include "svga_context.h"
  36 #include "svga_tgsi.h"
  37 #include "svga_hw_reg.h"
  38 #include "svga_cmd.h"
  39 #include "svga_debug.h"
  40
  41
  42 static const struct tgsi_token *substitute_vs(
  43    unsigned shader_id,
  44    const struct tgsi_token *old_tokens )
  45 {
  46 #if 0
  47    if (shader_id == 12) {
  48    static struct tgsi_token tokens[300];
  49
  50    const char *text =
  51       "VERT\n"
  52       "DCL IN[0]\n"
  53       "DCL IN[1]\n"
  54       "DCL IN[2]\n"
  55       "DCL OUT[0], POSITION\n"
  56       "DCL TEMP[0..4]\n"
  57       "IMM FLT32 {     1.0000,     1.0000,     1.0000,     1.0000 }\n"
  58       "IMM FLT32 {     0.45,     1.0000,     1.0000,     1.0000 }\n"
  59       "IMM FLT32 { 1.297863, 0.039245, 0.035993, 0.035976}\n"
  60       "IMM FLT32 { -0.019398, 1.696131, -0.202151, -0.202050  }\n"
  61       "IMM FLT32 { 0.051711, -0.348713, -0.979204, -0.978714  }\n"
  62       "IMM FLT32 { 0.000000, 0.000003, 139.491577, 141.421356 }\n"
  63       "DCL CONST[0..7]\n"
  64       "DCL CONST[9..16]\n"
  65       "  MOV TEMP[2], IMM[0]\n"
  66
  67       "  MOV TEMP[2].xyz, IN[2]\n"
  68       "  MOV TEMP[2].xyz, IN[0]\n"
  69       "  MOV TEMP[2].xyz, IN[1]\n"
  70
  71       "  MUL TEMP[1], IMM[3], TEMP[2].yyyy\n"
  72       "  MAD TEMP[3], IMM[2],  TEMP[2].xxxx, TEMP[1]\n"
  73       "  MAD TEMP[1], IMM[4], TEMP[2].zzzz, TEMP[3]\n"
  74       "  MAD TEMP[4], IMM[5], TEMP[2].wwww, TEMP[1]\n"
  75
  76       "  MOV OUT[0], TEMP[4]\n"
  77       "  END\n";
  78
  79    if (!tgsi_text_translate( text,
  80                              tokens,
  81                              Elements(tokens) ))
  82    {
  83       assert(0);
  84       return NULL;
  85    }
  86
  87    return tokens;
  88    }
  89 #endif
  90
  91    return old_tokens;
  92 }
  93
  94
  95 /***********************************************************************
  96  * Vertex shaders
  97  */
  98
  99 static void *
 100 svga_create_vs_state(struct pipe_context *pipe,
 101                      const struct pipe_shader_state *templ)
 102 {
 103    struct svga_context *svga = svga_context(pipe);
 104    struct svga_screen *svgascreen = svga_screen(pipe->screen);
 105    struct svga_vertex_shader *vs = CALLOC_STRUCT(svga_vertex_shader);
 106    if (!vs)
 107       return NULL;
 108
 109    /* substitute a debug shader?
 110     */
 111    vs->base.tokens = tgsi_dup_tokens(substitute_vs(svga->debug.shader_id,
 112                                                    templ->tokens));
 113
 114
 115    /* Collect basic info that we'll need later:
 116     */
 117    tgsi_scan_shader(vs->base.tokens, &vs->base.info);
 118
 119    {
 120       /* Need to do construct a new template in case we substitued a
 121        * debug shader.
 122        */
 123       struct pipe_shader_state tmp2 = *templ;
 124       tmp2.tokens = vs->base.tokens;
 125       vs->draw_shader = draw_create_vertex_shader(svga->swtnl.draw, &tmp2);
 126    }
 127
 128    vs->base.id = svga->debug.shader_id++;
 129    vs->base.use_sm30 = svgascreen->use_vs30;
 130
 131    if (SVGA_DEBUG & DEBUG_TGSI || 0) {
 132       debug_printf("%s id: %u, inputs: %u, outputs: %u\n",
 133                    __FUNCTION__, vs->base.id,
 134                    vs->base.info.num_inputs, vs->base.info.num_outputs);
 135    }
 136
 137    return vs;
 138 }
 139
 140 static void svga_bind_vs_state(struct pipe_context *pipe, void *shader)
 141 {
 142    struct svga_vertex_shader *vs = (struct svga_vertex_shader *)shader;
 143    struct svga_context *svga = svga_context(pipe);
 144
 145    svga->curr.vs = vs;
 146    svga->dirty |= SVGA_NEW_VS;
 147 }
 148
 149
 150 static void svga_delete_vs_state(struct pipe_context *pipe, void *shader)
 151 {
 152    struct svga_context *svga = svga_context(pipe);
 153    struct svga_vertex_shader *vs = (struct svga_vertex_shader *)shader;
 154    struct svga_shader_result *result, *tmp;
 155    enum pipe_error ret;
 156
 157    svga_hwtnl_flush_retry( svga );
 158
 159    draw_delete_vertex_shader(svga->swtnl.draw, vs->draw_shader);
 160
 161    for (result = vs->base.results; result; result = tmp ) {
 162       tmp = result->next;
 163
 164       ret = SVGA3D_DestroyShader(svga->swc,
 165                                  result->id,
 166                                  SVGA3D_SHADERTYPE_VS );
 167       if(ret != PIPE_OK) {
 168          svga_context_flush(svga, NULL);
 169          ret = SVGA3D_DestroyShader(svga->swc,
 170                                     result->id,
 171                                     SVGA3D_SHADERTYPE_VS );
 172          assert(ret == PIPE_OK);
 173       }
 174
 175       util_bitmask_clear( svga->vs_bm, result->id );
 176
 177       svga_destroy_shader_result( result );
 178
 179       /*
 180        * Remove stale references to this result to ensure a new result on the
 181        * same address will be detected as a change.
 182        */
 183       if(result == svga->state.hw_draw.vs)
 184          svga->state.hw_draw.vs = NULL;
 185    }
 186
 187    FREE((void *)vs->base.tokens);
 188    FREE(vs);
 189 }
 190
 191
 192 void svga_init_vs_functions( struct svga_context *svga )
 193 {
 194    svga->pipe.create_vs_state = svga_create_vs_state;
 195    svga->pipe.bind_vs_state = svga_bind_vs_state;
 196    svga->pipe.delete_vs_state = svga_delete_vs_state;
 197 }
 198