src/gallium/drivers/i965/brw_vs.c

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a 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, sublicense, 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
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32 #include "tgsi/tgsi_dump.h"
  33
  34 #include "brw_context.h"
  35 #include "brw_vs.h"
  36 #include "brw_util.h"
  37 #include "brw_state.h"
  38 #include "brw_pipe_rast.h"
  39
  40
  41
  42 static enum pipe_error do_vs_prog( struct brw_context *brw,
  43                                    struct brw_vertex_shader *vp,
  44                                    struct brw_vs_prog_key *key,
  45                                    struct brw_winsys_buffer **bo_out)
  46 {
  47    enum pipe_error ret;
  48    GLuint program_size;
  49    const GLuint *program;
  50    struct brw_vs_compile c;
  51
  52    memset(&c, 0, sizeof(c));
  53    memcpy(&c.key, key, sizeof(*key));
  54
  55    brw_init_compile(brw, &c.func);
  56    c.vp = vp;
  57
  58    c.prog_data.nr_outputs = vp->info.num_outputs;
  59    c.prog_data.nr_inputs = vp->info.num_inputs;
  60
  61    /* XXX: we want edgeflag handling to be integrated to the vertex
  62     * shader, but are currently faking the edgeflag output:
  63     */
  64    if (c.key.copy_edgeflag) {
  65       c.prog_data.output_edgeflag = c.prog_data.nr_outputs;
  66       c.prog_data.nr_outputs++;
  67    }
  68    else {
  69       c.prog_data.output_edgeflag = ~0;
  70    }
  71
  72
  73    if (1)
  74       tgsi_dump(c.vp->tokens, 0);
  75
  76    /* Emit GEN4 code.
  77     */
  78    brw_vs_emit(&c);
  79
  80    /* get the program
  81     */
  82    ret = brw_get_program(&c.func, &program, &program_size);
  83    if (ret)
  84       return ret;
  85
  86    ret = brw_upload_cache( &brw->cache, BRW_VS_PROG,
  87                            &c.key, sizeof(c.key),
  88                            NULL, 0,
  89                            program, program_size,
  90                            &c.prog_data,
  91                            &brw->vs.prog_data,
  92                            bo_out);
  93    if (ret)
  94       return ret;
  95
  96    return PIPE_OK;
  97 }
  98
  99
 100 static enum pipe_error brw_upload_vs_prog(struct brw_context *brw)
 101 {
 102    struct brw_vs_prog_key key;
 103    struct brw_vertex_shader *vp = brw->curr.vertex_shader;
 104    struct brw_fs_signature *sig = &brw->curr.fragment_shader->signature;
 105    enum pipe_error ret;
 106
 107    memset(&key, 0, sizeof(key));
 108
 109    key.program_string_id = vp->id;
 110    key.nr_userclip = brw->curr.ucp.nr;
 111    key.copy_edgeflag = (brw->curr.rast->templ.fill_ccw != PIPE_POLYGON_MODE_FILL ||
 112                         brw->curr.rast->templ.fill_cw != PIPE_POLYGON_MODE_FILL);
 113
 114    memcpy(&key.fs_signature, sig, brw_fs_signature_size(sig));
 115
 116
 117    /* Make an early check for the key.
 118     */
 119    if (brw_search_cache(&brw->cache, BRW_VS_PROG,
 120                         &key, brw_vs_prog_key_size(&key),
 121                         NULL, 0,
 122                         &brw->vs.prog_data,
 123                         &brw->vs.prog_bo))
 124       return PIPE_OK;
 125
 126    ret = do_vs_prog(brw, vp, &key, &brw->vs.prog_bo);
 127    if (ret)
 128       return ret;
 129
 130    return PIPE_OK;
 131 }
 132
 133
 134 /* See brw_vs.c:
 135  */
 136 const struct brw_tracked_state brw_vs_prog = {
 137    .dirty = {
 138       .mesa  = (PIPE_NEW_CLIP |
 139                 PIPE_NEW_RAST |
 140                 PIPE_NEW_FRAGMENT_SIGNATURE),
 141       .brw   = BRW_NEW_VERTEX_PROGRAM,
 142       .cache = 0
 143    },
 144    .prepare = brw_upload_vs_prog
 145 };