src/gallium/drivers/svga/svga_swtnl_state.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 "draw/draw_vbuf.h"
  28 #include "util/u_bitmask.h"
  29 #include "util/u_inlines.h"
  30 #include "pipe/p_state.h"
  31
  32 #include "svga_cmd.h"
  33 #include "svga_context.h"
  34 #include "svga_shader.h"
  35 #include "svga_swtnl.h"
  36 #include "svga_state.h"
  37 #include "svga_tgsi.h"
  38 #include "svga_swtnl_private.h"
  39
  40
  41 #define SVGA_POINT_ADJ_X -0.375f
  42 #define SVGA_POINT_ADJ_Y -0.5f
  43
  44 #define SVGA_LINE_ADJ_X -0.5f
  45 #define SVGA_LINE_ADJ_Y -0.5f
  46
  47 #define SVGA_TRIANGLE_ADJ_X -0.375f
  48 #define SVGA_TRIANGLE_ADJ_Y -0.5f
  49
  50
  51 static void set_draw_viewport( struct svga_context *svga )
  52 {
  53    struct pipe_viewport_state vp = svga->curr.viewport;
  54    float adjx = 0.0f;
  55    float adjy = 0.0f;
  56
  57    if (svga_have_vgpu10(svga)) {
  58       if (svga->curr.reduced_prim == PIPE_PRIM_TRIANGLES) {
  59          adjy = 0.25;
  60       }
  61    }
  62    else {
  63       switch (svga->curr.reduced_prim) {
  64       case PIPE_PRIM_POINTS:
  65          adjx = SVGA_POINT_ADJ_X;
  66          adjy = SVGA_POINT_ADJ_Y;
  67          break;
  68       case PIPE_PRIM_LINES:
  69          /* XXX: This is to compensate for the fact that wide lines are
  70           * going to be drawn with triangles, but we're not catching all
  71           * cases where that will happen.
  72           */
  73          if (svga->curr.rast->need_pipeline & SVGA_PIPELINE_FLAG_LINES)
  74          {
  75             adjx = SVGA_LINE_ADJ_X + 0.175f;
  76             adjy = SVGA_LINE_ADJ_Y - 0.175f;
  77          }
  78          else {
  79             adjx = SVGA_LINE_ADJ_X;
  80             adjy = SVGA_LINE_ADJ_Y;
  81          }
  82          break;
  83       case PIPE_PRIM_TRIANGLES:
  84          adjx += SVGA_TRIANGLE_ADJ_X;
  85          adjy += SVGA_TRIANGLE_ADJ_Y;
  86          break;
  87       }
  88    }
  89
  90    vp.translate[0] += adjx;
  91    vp.translate[1] += adjy;
  92
  93    draw_set_viewport_states(svga->swtnl.draw, 0, 1, &vp);
  94 }
  95
  96 static enum pipe_error
  97 update_swtnl_draw( struct svga_context *svga,
  98                    unsigned dirty )
  99 {
 100    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_SWTNLUPDATEDRAW);
 101
 102    draw_flush( svga->swtnl.draw );
 103
 104    if (dirty & SVGA_NEW_VS)
 105       draw_bind_vertex_shader(svga->swtnl.draw,
 106                               svga->curr.vs->draw_shader);
 107
 108    if (dirty & SVGA_NEW_FS)
 109       draw_bind_fragment_shader(svga->swtnl.draw,
 110                                 svga->curr.fs->draw_shader);
 111
 112    if (dirty & SVGA_NEW_VBUFFER)
 113       draw_set_vertex_buffers(svga->swtnl.draw, 0,
 114                               svga->curr.num_vertex_buffers,
 115                               svga->curr.vb);
 116
 117    if (dirty & SVGA_NEW_VELEMENT)
 118       draw_set_vertex_elements(svga->swtnl.draw,
 119                                svga->curr.velems->count,
 120                                svga->curr.velems->velem );
 121
 122    if (dirty & SVGA_NEW_CLIP)
 123       draw_set_clip_state(svga->swtnl.draw,
 124                           &svga->curr.clip);
 125
 126    if (dirty & (SVGA_NEW_VIEWPORT |
 127                 SVGA_NEW_REDUCED_PRIMITIVE |
 128                 SVGA_NEW_RAST))
 129       set_draw_viewport( svga );
 130
 131    if (dirty & SVGA_NEW_RAST)
 132       draw_set_rasterizer_state(svga->swtnl.draw,
 133                                 &svga->curr.rast->templ,
 134                                 (void *) svga->curr.rast);
 135
 136    /* Tell the draw module how deep the Z/depth buffer is.
 137     *
 138     * If no depth buffer is bound, send the utility function the
 139     * format for no bound depth (PIPE_FORMAT_NONE).
 140     */
 141    if (dirty & SVGA_NEW_FRAME_BUFFER)
 142       draw_set_zs_format(svga->swtnl.draw,
 143          (svga->curr.framebuffer.zsbuf) ?
 144              svga->curr.framebuffer.zsbuf->format : PIPE_FORMAT_NONE);
 145
 146    SVGA_STATS_TIME_POP(svga_sws(svga));
 147    return PIPE_OK;
 148 }
 149
 150
 151 struct svga_tracked_state svga_update_swtnl_draw =
 152 {
 153    "update draw module state",
 154    (SVGA_NEW_VS |
 155     SVGA_NEW_VBUFFER |
 156     SVGA_NEW_VELEMENT |
 157     SVGA_NEW_CLIP |
 158     SVGA_NEW_VIEWPORT |
 159     SVGA_NEW_RAST |
 160     SVGA_NEW_FRAME_BUFFER |
 161     SVGA_NEW_REDUCED_PRIMITIVE),
 162    update_swtnl_draw
 163 };
 164
 165
 166 static SVGA3dSurfaceFormat
 167 translate_vertex_format(SVGA3dDeclType format)
 168 {
 169    switch (format) {
 170    case SVGA3D_DECLTYPE_FLOAT1:
 171       return SVGA3D_R32_FLOAT;
 172    case SVGA3D_DECLTYPE_FLOAT2:
 173       return SVGA3D_R32G32_FLOAT;
 174    case SVGA3D_DECLTYPE_FLOAT3:
 175       return SVGA3D_R32G32B32_FLOAT;
 176    case SVGA3D_DECLTYPE_FLOAT4:
 177       return SVGA3D_R32G32B32A32_FLOAT;
 178    default:
 179       assert(!"Unexpected format in translate_vertex_format()");
 180       return SVGA3D_R32G32B32A32_FLOAT;
 181    }
 182 }
 183
 184
 185 static SVGA3dElementLayoutId
 186 svga_vdecl_to_input_element(struct svga_context *svga,
 187                             const SVGA3dVertexDecl *vdecl, unsigned num_decls)
 188 {
 189    SVGA3dElementLayoutId id;
 190    SVGA3dInputElementDesc elements[PIPE_MAX_ATTRIBS];
 191    enum pipe_error ret;
 192    unsigned i;
 193
 194    assert(num_decls <= PIPE_MAX_ATTRIBS);
 195    assert(svga_have_vgpu10(svga));
 196
 197    for (i = 0; i < num_decls; i++) {
 198       elements[i].inputSlot = 0; /* vertex buffer index */
 199       elements[i].alignedByteOffset = vdecl[i].array.offset;
 200       elements[i].format = translate_vertex_format(vdecl[i].identity.type);
 201       elements[i].inputSlotClass = SVGA3D_INPUT_PER_VERTEX_DATA;
 202       elements[i].instanceDataStepRate = 0;
 203       elements[i].inputRegister = i;
 204    }
 205
 206    id = util_bitmask_add(svga->input_element_object_id_bm);
 207
 208    ret = SVGA3D_vgpu10_DefineElementLayout(svga->swc, num_decls, id, elements);
 209    if (ret != PIPE_OK) {
 210       svga_context_flush(svga, NULL);
 211       ret = SVGA3D_vgpu10_DefineElementLayout(svga->swc, num_decls, id, elements);
 212       assert(ret == PIPE_OK);
 213    }
 214
 215    return id;
 216 }
 217
 218
 219 enum pipe_error
 220 svga_swtnl_update_vdecl( struct svga_context *svga )
 221 {
 222    struct svga_vbuf_render *svga_render = svga_vbuf_render(svga->swtnl.backend);
 223    struct draw_context *draw = svga->swtnl.draw;
 224    struct vertex_info *vinfo = &svga_render->vertex_info;
 225    SVGA3dVertexDecl vdecl[PIPE_MAX_ATTRIBS];
 226    struct svga_fragment_shader *fs = svga->curr.fs;
 227    int offset = 0;
 228    int nr_decls = 0;
 229    int src;
 230    unsigned i;
 231    int any_change;
 232
 233    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_SWTNLUPDATEVDECL);
 234
 235    memset(vinfo, 0, sizeof(*vinfo));
 236    memset(vdecl, 0, sizeof(vdecl));
 237
 238    draw_prepare_shader_outputs(draw);
 239
 240    /* always add position */
 241    src = draw_find_shader_output(draw, TGSI_SEMANTIC_POSITION, 0);
 242    draw_emit_vertex_attr(vinfo, EMIT_4F, src);
 243    vinfo->attrib[0].emit = EMIT_4F;
 244    vdecl[0].array.offset = offset;
 245    vdecl[0].identity.method = SVGA3D_DECLMETHOD_DEFAULT;
 246    vdecl[0].identity.type = SVGA3D_DECLTYPE_FLOAT4;
 247    vdecl[0].identity.usage = SVGA3D_DECLUSAGE_POSITIONT;
 248    vdecl[0].identity.usageIndex = 0;
 249    offset += 16;
 250    nr_decls++;
 251
 252    for (i = 0; i < fs->base.info.num_inputs; i++) {
 253       const unsigned sem_name = fs->base.info.input_semantic_name[i];
 254       const unsigned sem_index = fs->base.info.input_semantic_index[i];
 255
 256       src = draw_find_shader_output(draw, sem_name, sem_index);
 257
 258       vdecl[nr_decls].array.offset = offset;
 259       vdecl[nr_decls].identity.usageIndex = sem_index;
 260
 261       switch (sem_name) {
 262       case TGSI_SEMANTIC_COLOR:
 263          draw_emit_vertex_attr(vinfo, EMIT_4F, src);
 264          vdecl[nr_decls].identity.usage = SVGA3D_DECLUSAGE_COLOR;
 265          vdecl[nr_decls].identity.type = SVGA3D_DECLTYPE_FLOAT4;
 266          offset += 16;
 267          nr_decls++;
 268          break;
 269       case TGSI_SEMANTIC_GENERIC:
 270          draw_emit_vertex_attr(vinfo, EMIT_4F, src);
 271          vdecl[nr_decls].identity.usage = SVGA3D_DECLUSAGE_TEXCOORD;
 272          vdecl[nr_decls].identity.type = SVGA3D_DECLTYPE_FLOAT4;
 273          vdecl[nr_decls].identity.usageIndex =
 274             svga_remap_generic_index(fs->generic_remap_table, sem_index);
 275          offset += 16;
 276          nr_decls++;
 277          break;
 278       case TGSI_SEMANTIC_FOG:
 279          draw_emit_vertex_attr(vinfo, EMIT_1F, src);
 280          vdecl[nr_decls].identity.usage = SVGA3D_DECLUSAGE_TEXCOORD;
 281          vdecl[nr_decls].identity.type = SVGA3D_DECLTYPE_FLOAT1;
 282          assert(vdecl[nr_decls].identity.usageIndex == 0);
 283          offset += 4;
 284          nr_decls++;
 285          break;
 286       case TGSI_SEMANTIC_POSITION:
 287          /* generated internally, not a vertex shader output */
 288          break;
 289       default:
 290          assert(0);
 291       }
 292    }
 293
 294    draw_compute_vertex_size(vinfo);
 295
 296    svga_render->vdecl_count = nr_decls;
 297    for (i = 0; i < svga_render->vdecl_count; i++) {
 298       vdecl[i].array.stride = offset;
 299    }
 300
 301    any_change = memcmp(svga_render->vdecl, vdecl, sizeof(vdecl));
 302
 303    if (svga_have_vgpu10(svga)) {
 304       enum pipe_error ret;
 305
 306       if (!any_change && svga_render->layout_id != SVGA3D_INVALID_ID) {
 307          goto done;
 308       }
 309
 310       if (svga_render->layout_id != SVGA3D_INVALID_ID) {
 311          /* destroy old */
 312          ret = SVGA3D_vgpu10_DestroyElementLayout(svga->swc,
 313                                                   svga_render->layout_id);
 314          if (ret != PIPE_OK) {
 315             svga_context_flush(svga, NULL);
 316             ret = SVGA3D_vgpu10_DestroyElementLayout(svga->swc,
 317                                                      svga_render->layout_id);
 318             assert(ret == PIPE_OK);
 319          }
 320
 321          /**
 322           * reset current layout id state after the element layout is
 323           * destroyed, so that if a new layout has the same layout id, we
 324           * will know to re-issue the SetInputLayout command.
 325           */
 326          if (svga->state.hw_draw.layout_id == svga_render->layout_id)
 327             svga->state.hw_draw.layout_id = SVGA3D_INVALID_ID;
 328
 329          util_bitmask_clear(svga->input_element_object_id_bm,
 330                             svga_render->layout_id);
 331       }
 332
 333       svga_render->layout_id =
 334          svga_vdecl_to_input_element(svga, vdecl, nr_decls);
 335
 336       /* bind new */
 337       if (svga->state.hw_draw.layout_id != svga_render->layout_id) {
 338          ret = SVGA3D_vgpu10_SetInputLayout(svga->swc, svga_render->layout_id);
 339          if (ret != PIPE_OK) {
 340             svga_context_flush(svga, NULL);
 341             ret = SVGA3D_vgpu10_SetInputLayout(svga->swc,
 342                                                svga_render->layout_id);
 343             assert(ret == PIPE_OK);
 344          }
 345
 346          svga->state.hw_draw.layout_id = svga_render->layout_id;
 347       }
 348    }
 349    else {
 350       if (!any_change)
 351          goto done;
 352    }
 353
 354    memcpy(svga_render->vdecl, vdecl, sizeof(vdecl));
 355    svga->swtnl.new_vdecl = TRUE;
 356
 357 done:
 358    SVGA_STATS_TIME_POP(svga_sws(svga));
 359    return PIPE_OK;
 360 }
 361
 362
 363 static enum pipe_error
 364 update_swtnl_vdecl( struct svga_context *svga,
 365                     unsigned dirty )
 366 {
 367    return svga_swtnl_update_vdecl( svga );
 368 }
 369
 370
 371 struct svga_tracked_state svga_update_swtnl_vdecl =
 372 {
 373    "update draw module vdecl",
 374    (SVGA_NEW_VS |
 375     SVGA_NEW_FS),
 376    update_swtnl_vdecl
 377 };