src/mesa/drivers/dri/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
  33 #include "brw_context.h"
  34 #include "brw_vs.h"
  35 #include "brw_util.h"
  36 #include "brw_state.h"
  37 #include "shader/prog_print.h"
  38
  39
  40
  41 static void do_vs_prog( struct brw_context *brw,
  42                         struct brw_vertex_program *vp,
  43                         struct brw_vs_prog_key *key )
  44 {
  45    GLuint program_size;
  46    const GLuint *program;
  47    struct brw_vs_compile c;
  48
  49    memset(&c, 0, sizeof(c));
  50    memcpy(&c.key, key, sizeof(*key));
  51
  52    brw_init_compile(&c.func);
  53    c.vp = vp;
  54
  55    c.prog_data.outputs_written = vp->program.Base.OutputsWritten;
  56    c.prog_data.inputs_read = vp->program.Base.InputsRead;
  57
  58    if (c.key.copy_edgeflag) {
  59       c.prog_data.outputs_written |= 1<<VERT_RESULT_EDGE;
  60       c.prog_data.inputs_read |= 1<<VERT_ATTRIB_EDGEFLAG;
  61    }
  62
  63    if (0)
  64       _mesa_print_program(&c.vp->program.Base);
  65
  66
  67
  68    /* Emit GEN4 code.
  69     */
  70    brw_vs_emit(&c);
  71
  72    /* get the program
  73     */
  74    program = brw_get_program(&c.func, &program_size);
  75
  76    /*
  77     */
  78    brw->vs.prog_gs_offset = brw_upload_cache( &brw->cache[BRW_VS_PROG],
  79                                               &c.key,
  80                                               sizeof(c.key),
  81                                               program,
  82                                               program_size,
  83                                               &c.prog_data,
  84                                               &brw->vs.prog_data);
  85 }
  86
  87
  88 static void brw_upload_vs_prog( struct brw_context *brw )
  89 {
  90    struct brw_vs_prog_key key;
  91    struct brw_vertex_program *vp =
  92       (struct brw_vertex_program *)brw->vertex_program;
  93    struct brw_vs_prog_data *prog_data;
  94    uint32_t offset;
  95
  96    assert (vp && !vp->program.IsNVProgram);
  97
  98    memset(&key, 0, sizeof(key));
  99
 100    /* Just upload the program verbatim for now.  Always send it all
 101     * the inputs it asks for, whether they are varying or not.
 102     */
 103    key.program_string_id = vp->id;
 104    key.nr_userclip = brw_count_bits(brw->attribs.Transform->ClipPlanesEnabled);
 105    key.copy_edgeflag = (brw->attribs.Polygon->FrontMode != GL_FILL ||
 106                         brw->attribs.Polygon->BackMode != GL_FILL);
 107
 108    /* BRW_NEW_METAOPS
 109     */
 110    if (brw->metaops.active)
 111       key.know_w_is_one = 1;
 112
 113    /* Make an early check for the key.
 114     */
 115    if (brw_search_cache(&brw->cache[BRW_VS_PROG],
 116                         &key, sizeof(key),
 117                         &prog_data,
 118                         &offset)) {
 119       if (offset != brw->vs.prog_gs_offset ||
 120           !brw->vs.prog_data ||
 121           memcmp(prog_data, &brw->vs.prog_data,
 122                  sizeof(*brw->vs.prog_data)) != 0)
 123       {
 124          brw->vs.prog_gs_offset = offset;
 125          brw->vs.prog_data = prog_data;
 126          brw->state.dirty.cache |= CACHE_NEW_VS_PROG;
 127       }
 128    } else {
 129       do_vs_prog(brw, vp, &key);
 130       brw->state.dirty.cache |= CACHE_NEW_VS_PROG;
 131    }
 132 }
 133
 134
 135 /* See brw_vs.c:
 136  */
 137 const struct brw_tracked_state brw_vs_prog = {
 138    .dirty = {
 139       .mesa  = _NEW_TRANSFORM | _NEW_POLYGON,
 140       .brw   = BRW_NEW_VERTEX_PROGRAM | BRW_NEW_METAOPS,
 141       .cache = 0
 142    },
 143    .update = brw_upload_vs_prog
 144 };