src/mesa/drivers/dri/i965/brw_sf_state.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
  34 #include "brw_context.h"
  35 #include "brw_state.h"
  36 #include "brw_defines.h"
  37 #include "macros.h"
  38
  39 static void upload_sf_vp(struct brw_context *brw)
  40 {
  41    struct brw_sf_viewport sfv;
  42
  43    memset(&sfv, 0, sizeof(sfv));
  44
  45    if (brw->intel.driDrawable)
  46    {
  47       /* _NEW_VIEWPORT, BRW_NEW_METAOPS */
  48
  49       if (!brw->metaops.active) {
  50          const GLfloat *v = brw->intel.ctx.Viewport._WindowMap.m;
  51
  52          sfv.viewport.m00 =   v[MAT_SX];
  53          sfv.viewport.m11 = - v[MAT_SY];
  54          sfv.viewport.m22 =   v[MAT_SZ] * brw->intel.depth_scale;
  55          sfv.viewport.m30 =   v[MAT_TX];
  56          sfv.viewport.m31 = - v[MAT_TY] + brw->intel.driDrawable->h;
  57          sfv.viewport.m32 =   v[MAT_TZ] * brw->intel.depth_scale;
  58       }
  59       else {
  60          sfv.viewport.m00 =   1;
  61          sfv.viewport.m11 = - 1;
  62          sfv.viewport.m22 =   1;
  63          sfv.viewport.m30 =   0;
  64          sfv.viewport.m31 =   brw->intel.driDrawable->h;
  65          sfv.viewport.m32 =   0;
  66       }
  67    }
  68
  69    /* XXX: what state for this? */
  70    if (brw->intel.driDrawable)
  71    {
  72       intelScreenPrivate *screen = brw->intel.intelScreen;
  73       /* _NEW_SCISSOR */
  74       GLint x = brw->attribs.Scissor->X;
  75       GLint y = brw->attribs.Scissor->Y;
  76       GLuint w = brw->attribs.Scissor->Width;
  77       GLuint h = brw->attribs.Scissor->Height;
  78
  79       GLint x1 = x;
  80       GLint y1 = brw->intel.driDrawable->h - (y + h);
  81       GLint x2 = x + w - 1;
  82       GLint y2 = y1 + h - 1;
  83
  84       if (x1 < 0) x1 = 0;
  85       if (y1 < 0) y1 = 0;
  86       if (x2 < 0) x2 = 0;
  87       if (y2 < 0) y2 = 0;
  88
  89       if (x2 >= screen->width) x2 = screen->width-1;
  90       if (y2 >= screen->height) y2 = screen->height-1;
  91       if (x1 >= screen->width) x1 = screen->width-1;
  92       if (y1 >= screen->height) y1 = screen->height-1;
  93
  94       sfv.scissor.xmin = x1;
  95       sfv.scissor.xmax = x2;
  96       sfv.scissor.ymin = y1;
  97       sfv.scissor.ymax = y2;
  98    }
  99
 100    brw->sf.vp_gs_offset = brw_cache_data( &brw->cache[BRW_SF_VP], &sfv );
 101 }
 102
 103 const struct brw_tracked_state brw_sf_vp = {
 104    .dirty = {
 105       .mesa  = (_NEW_VIEWPORT |
 106                 _NEW_SCISSOR),
 107       .brw   = BRW_NEW_METAOPS,
 108       .cache = 0
 109    },
 110    .update = upload_sf_vp
 111 };
 112
 113
 114
 115 static void upload_sf_unit( struct brw_context *brw )
 116 {
 117    struct brw_sf_unit_state sf;
 118    memset(&sf, 0, sizeof(sf));
 119
 120    /* CACHE_NEW_SF_PROG */
 121    sf.thread0.grf_reg_count = ((brw->sf.prog_data->total_grf-1) & ~15) / 16;
 122    sf.thread0.kernel_start_pointer = brw->sf.prog_gs_offset >> 6;
 123    sf.thread3.urb_entry_read_length = brw->sf.prog_data->urb_read_length;
 124
 125    sf.thread1.floating_point_mode = BRW_FLOATING_POINT_NON_IEEE_754;
 126    sf.thread3.dispatch_grf_start_reg = 3;
 127    sf.thread3.urb_entry_read_offset = 1;
 128
 129    /* BRW_NEW_URB_FENCE */
 130    sf.thread4.nr_urb_entries = brw->urb.nr_sf_entries;
 131    sf.thread4.urb_entry_allocation_size = brw->urb.sfsize - 1;
 132    sf.thread4.max_threads = MIN2(12, brw->urb.nr_sf_entries / 2) - 1;
 133
 134    if (INTEL_DEBUG & DEBUG_SINGLE_THREAD)
 135       sf.thread4.max_threads = 0;
 136
 137    if (INTEL_DEBUG & DEBUG_STATS)
 138       sf.thread4.stats_enable = 1;
 139
 140    /* CACHE_NEW_SF_VP */
 141    sf.sf5.sf_viewport_state_offset = brw->sf.vp_gs_offset >> 5;
 142
 143    sf.sf5.viewport_transform = 1;
 144
 145    /* _NEW_SCISSOR */
 146    if (brw->attribs.Scissor->Enabled)
 147       sf.sf6.scissor = 1;
 148
 149    /* _NEW_POLYGON */
 150    if (brw->attribs.Polygon->FrontFace == GL_CCW)
 151       sf.sf5.front_winding = BRW_FRONTWINDING_CCW;
 152    else
 153       sf.sf5.front_winding = BRW_FRONTWINDING_CW;
 154
 155    if (brw->attribs.Polygon->CullFlag) {
 156       switch (brw->attribs.Polygon->CullFaceMode) {
 157       case GL_FRONT:
 158          sf.sf6.cull_mode = BRW_CULLMODE_FRONT;
 159          break;
 160       case GL_BACK:
 161          sf.sf6.cull_mode = BRW_CULLMODE_BACK;
 162          break;
 163       case GL_FRONT_AND_BACK:
 164          sf.sf6.cull_mode = BRW_CULLMODE_BOTH;
 165          break;
 166       default:
 167          assert(0);
 168          break;
 169       }
 170    }
 171    else
 172       sf.sf6.cull_mode = BRW_CULLMODE_NONE;
 173
 174
 175    /* _NEW_LINE */
 176    sf.sf6.line_width = brw->attribs.Line->_Width * (1<<1);
 177
 178    sf.sf6.line_endcap_aa_region_width = 1;
 179    if (brw->attribs.Line->SmoothFlag)
 180       sf.sf6.aa_enable = 1;
 181    else if (sf.sf6.line_width <= 0x2)
 182        sf.sf6.line_width = 0;
 183
 184    /* _NEW_POINT */
 185    sf.sf6.point_rast_rule = 1;  /* opengl conventions */
 186    sf.sf7.point_size = brw->attribs.Point->_Size * (1<<3);
 187    sf.sf7.use_point_size_state = !brw->attribs.Point->_Attenuated;
 188
 189    /* might be BRW_NEW_PRIMITIVE if we have to adjust pv for polygons:
 190     */
 191    sf.sf7.trifan_pv = 2;
 192    sf.sf7.linestrip_pv = 1;
 193    sf.sf7.tristrip_pv = 2;
 194    sf.sf7.line_last_pixel_enable = 0;
 195
 196    /* Set bias for OpenGL rasterization rules:
 197     */
 198    sf.sf6.dest_org_vbias = 0x8;
 199    sf.sf6.dest_org_hbias = 0x8;
 200
 201    brw->sf.state_gs_offset = brw_cache_data( &brw->cache[BRW_SF_UNIT], &sf );
 202 }
 203
 204
 205 const struct brw_tracked_state brw_sf_unit = {
 206    .dirty = {
 207       .mesa  = (_NEW_POLYGON |
 208                 _NEW_LINE |
 209                 _NEW_POINT |
 210                 _NEW_SCISSOR),
 211       .brw   = (BRW_NEW_URB_FENCE |
 212                 BRW_NEW_METAOPS),
 213       .cache = (CACHE_NEW_SF_VP |
 214                 CACHE_NEW_SF_PROG)
 215    },
 216    .update = upload_sf_unit
 217 };
 218
 219