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 "program/prog_print.h"
  38 #include "program/prog_parameter.h"
  39
  40 #include "../glsl/ralloc.h"
  41
  42 static void do_vs_prog( struct brw_context *brw,
  43                         struct brw_vertex_program *vp,
  44                         struct brw_vs_prog_key *key )
  45 {
  46    struct gl_context *ctx = &brw->intel.ctx;
  47    GLuint program_size;
  48    const GLuint *program;
  49    struct brw_vs_compile c;
  50    void *mem_ctx;
  51    int aux_size;
  52    int i;
  53
  54    memset(&c, 0, sizeof(c));
  55    memcpy(&c.key, key, sizeof(*key));
  56
  57    mem_ctx = ralloc_context(NULL);
  58
  59    brw_init_compile(brw, &c.func, mem_ctx);
  60    c.vp = vp;
  61
  62    c.prog_data.outputs_written = vp->program.Base.OutputsWritten;
  63    c.prog_data.inputs_read = vp->program.Base.InputsRead;
  64
  65    if (c.key.copy_edgeflag) {
  66       c.prog_data.outputs_written |= BITFIELD64_BIT(VERT_RESULT_EDGE);
  67       c.prog_data.inputs_read |= 1<<VERT_ATTRIB_EDGEFLAG;
  68    }
  69
  70    /* Put dummy slots into the VUE for the SF to put the replaced
  71     * point sprite coords in.  We shouldn't need these dummy slots,
  72     * which take up precious URB space, but it would mean that the SF
  73     * doesn't get nice aligned pairs of input coords into output
  74     * coords, which would be a pain to handle.
  75     */
  76    for (i = 0; i < 8; i++) {
  77       if (c.key.point_coord_replace & (1 << i))
  78          c.prog_data.outputs_written |= BITFIELD64_BIT(VERT_RESULT_TEX0 + i);
  79    }
  80
  81    if (0) {
  82       _mesa_fprint_program_opt(stdout, &c.vp->program.Base, PROG_PRINT_DEBUG,
  83                                GL_TRUE);
  84    }
  85
  86    /* Emit GEN4 code.
  87     */
  88    brw_vs_emit(&c);
  89
  90    /* get the program
  91     */
  92    program = brw_get_program(&c.func, &program_size);
  93
  94    /* We upload from &c.prog_data including the constant_map assuming
  95     * they're packed together.  It would be nice to have a
  96     * compile-time assert macro here.
  97     */
  98    assert(c.constant_map == (int8_t *)&c.prog_data +
  99           sizeof(c.prog_data));
 100    assert(ctx->Const.VertexProgram.MaxNativeParameters ==
 101           ARRAY_SIZE(c.constant_map));
 102    (void) ctx;
 103
 104    aux_size = sizeof(c.prog_data);
 105    /* constant_map */
 106    aux_size += c.vp->program.Base.Parameters->NumParameters;
 107
 108    brw_upload_cache(&brw->cache, BRW_VS_PROG,
 109                     &c.key, sizeof(c.key),
 110                     program, program_size,
 111                     &c.prog_data, aux_size,
 112                     &brw->vs.prog_offset, &brw->vs.prog_data);
 113    ralloc_free(mem_ctx);
 114 }
 115
 116
 117 static void brw_upload_vs_prog(struct brw_context *brw)
 118 {
 119    struct gl_context *ctx = &brw->intel.ctx;
 120    struct brw_vs_prog_key key;
 121    struct brw_vertex_program *vp =
 122       (struct brw_vertex_program *)brw->vertex_program;
 123    int i;
 124
 125    memset(&key, 0, sizeof(key));
 126
 127    /* Just upload the program verbatim for now.  Always send it all
 128     * the inputs it asks for, whether they are varying or not.
 129     */
 130    key.program_string_id = vp->id;
 131    key.nr_userclip = brw_count_bits(ctx->Transform.ClipPlanesEnabled);
 132    key.copy_edgeflag = (ctx->Polygon.FrontMode != GL_FILL ||
 133                         ctx->Polygon.BackMode != GL_FILL);
 134    key.two_side_color = (ctx->Light.Enabled && ctx->Light.Model.TwoSide);
 135
 136    /* _NEW_LIGHT | _NEW_BUFFERS */
 137    key.clamp_vertex_color = ctx->Light._ClampVertexColor;
 138
 139    /* _NEW_POINT */
 140    if (ctx->Point.PointSprite) {
 141       for (i = 0; i < 8; i++) {
 142          if (ctx->Point.CoordReplace[i])
 143             key.point_coord_replace |= (1 << i);
 144       }
 145    }
 146
 147    /* BRW_NEW_VERTICES */
 148    for (i = 0; i < VERT_ATTRIB_MAX; i++) {
 149       if (vp->program.Base.InputsRead & (1 << i) &&
 150           brw->vb.inputs[i].glarray->Type == GL_FIXED) {
 151          key.gl_fixed_input_size[i] = brw->vb.inputs[i].glarray->Size;
 152       }
 153    }
 154
 155    if (!brw_search_cache(&brw->cache, BRW_VS_PROG,
 156                          &key, sizeof(key),
 157                          &brw->vs.prog_offset, &brw->vs.prog_data)) {
 158       do_vs_prog(brw, vp, &key);
 159    }
 160    brw->vs.constant_map = ((int8_t *)brw->vs.prog_data +
 161                            sizeof(*brw->vs.prog_data));
 162 }
 163
 164
 165 /* See brw_vs.c:
 166  */
 167 const struct brw_tracked_state brw_vs_prog = {
 168    .dirty = {
 169       .mesa  = (_NEW_TRANSFORM | _NEW_POLYGON | _NEW_POINT | _NEW_LIGHT |
 170                 _NEW_BUFFERS),
 171       .brw   = (BRW_NEW_VERTEX_PROGRAM |
 172                 BRW_NEW_VERTICES),
 173       .cache = 0
 174    },
 175    .prepare = brw_upload_vs_prog
 176 };