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    draw_flush( svga->swtnl.draw );
 101
 102    if (dirty & SVGA_NEW_VS)
 103       draw_bind_vertex_shader(svga->swtnl.draw,
 104                               svga->curr.vs->draw_shader);
 105
 106    if (dirty & SVGA_NEW_FS)
 107       draw_bind_fragment_shader(svga->swtnl.draw,
 108                                 svga->curr.fs->draw_shader);
 109
 110    if (dirty & SVGA_NEW_VBUFFER)
 111       draw_set_vertex_buffers(svga->swtnl.draw, 0,
 112                               svga->curr.num_vertex_buffers,
 113                               svga->curr.vb);
 114
 115    if (dirty & SVGA_NEW_VELEMENT)
 116       draw_set_vertex_elements(svga->swtnl.draw,
 117                                svga->curr.velems->count,
 118                                svga->curr.velems->velem );
 119
 120    if (dirty & SVGA_NEW_CLIP)
 121       draw_set_clip_state(svga->swtnl.draw,
 122                           &svga->curr.clip);
 123
 124    if (dirty & (SVGA_NEW_VIEWPORT |
 125                 SVGA_NEW_REDUCED_PRIMITIVE |
 126                 SVGA_NEW_RAST))
 127       set_draw_viewport( svga );
 128
 129    if (dirty & SVGA_NEW_RAST)
 130       draw_set_rasterizer_state(svga->swtnl.draw,
 131                                 &svga->curr.rast->templ,
 132                                 (void *) svga->curr.rast);
 133
 134    /* Tell the draw module how deep the Z/depth buffer is.
 135     *
 136     * If no depth buffer is bound, send the utility function the
 137     * format for no bound depth (PIPE_FORMAT_NONE).
 138     */
 139    if (dirty & SVGA_NEW_FRAME_BUFFER)
 140       draw_set_zs_format(svga->swtnl.draw,
 141          (svga->curr.framebuffer.zsbuf) ?
 142              svga->curr.framebuffer.zsbuf->format : PIPE_FORMAT_NONE);
 143
 144    return PIPE_OK;
 145 }
 146
 147
 148 struct svga_tracked_state svga_update_swtnl_draw =
 149 {
 150    "update draw module state",
 151    (SVGA_NEW_VS |
 152     SVGA_NEW_VBUFFER |
 153     SVGA_NEW_VELEMENT |
 154     SVGA_NEW_CLIP |
 155     SVGA_NEW_VIEWPORT |
 156     SVGA_NEW_RAST |
 157     SVGA_NEW_FRAME_BUFFER |
 158     SVGA_NEW_REDUCED_PRIMITIVE),
 159    update_swtnl_draw
 160 };
 161
 162
 163 static SVGA3dSurfaceFormat
 164 translate_vertex_format(SVGA3dDeclType format)
 165 {
 166    switch (format) {
 167    case SVGA3D_DECLTYPE_FLOAT1:
 168       return SVGA3D_R32_FLOAT;
 169    case SVGA3D_DECLTYPE_FLOAT2:
 170       return SVGA3D_R32G32_FLOAT;
 171    case SVGA3D_DECLTYPE_FLOAT3:
 172       return SVGA3D_R32G32B32_FLOAT;
 173    case SVGA3D_DECLTYPE_FLOAT4:
 174       return SVGA3D_R32G32B32A32_FLOAT;
 175    default:
 176       assert(!"Unexpected format in translate_vertex_format()");
 177       return SVGA3D_R32G32B32A32_FLOAT;
 178    }
 179 }
 180
 181
 182 static SVGA3dElementLayoutId
 183 svga_vdecl_to_input_element(struct svga_context *svga,
 184                             const SVGA3dVertexDecl *vdecl, unsigned num_decls)
 185 {
 186    SVGA3dElementLayoutId id;
 187    SVGA3dInputElementDesc elements[PIPE_MAX_ATTRIBS];
 188    enum pipe_error ret;
 189    unsigned i;
 190
 191    assert(num_decls <= PIPE_MAX_ATTRIBS);
 192    assert(svga_have_vgpu10(svga));
 193
 194    for (i = 0; i < num_decls; i++) {
 195       elements[i].inputSlot = 0; /* vertex buffer index */
 196       elements[i].alignedByteOffset = vdecl[i].array.offset;
 197       elements[i].format = translate_vertex_format(vdecl[i].identity.type);
 198       elements[i].inputSlotClass = SVGA3D_INPUT_PER_VERTEX_DATA;
 199       elements[i].instanceDataStepRate = 0;
 200       elements[i].inputRegister = i;
 201    }
 202
 203    id = util_bitmask_add(svga->input_element_object_id_bm);
 204
 205    ret = SVGA3D_vgpu10_DefineElementLayout(svga->swc, num_decls, id, elements);
 206    if (ret != PIPE_OK) {
 207       svga_context_flush(svga, NULL);
 208       ret = SVGA3D_vgpu10_DefineElementLayout(svga->swc, num_decls, id, elements);
 209       assert(ret == PIPE_OK);
 210    }
 211
 212    return id;
 213 }
 214
 215
 216 enum pipe_error
 217 svga_swtnl_update_vdecl( struct svga_context *svga )
 218 {
 219    struct svga_vbuf_render *svga_render = svga_vbuf_render(svga->swtnl.backend);
 220    struct draw_context *draw = svga->swtnl.draw;
 221    struct vertex_info *vinfo = &svga_render->vertex_info;
 222    SVGA3dVertexDecl vdecl[PIPE_MAX_ATTRIBS];
 223    const enum interp_mode colorInterp =
 224       svga->curr.rast->templ.flatshade ? INTERP_CONSTANT : INTERP_LINEAR;
 225    struct svga_fragment_shader *fs = svga->curr.fs;
 226    int offset = 0;
 227    int nr_decls = 0;
 228    int src;
 229    unsigned i;
 230    int any_change;
 231
 232    memset(vinfo, 0, sizeof(*vinfo));
 233    memset(vdecl, 0, sizeof(vdecl));
 234
 235    draw_prepare_shader_outputs(draw);
 236
 237    /* always add position */
 238    src = draw_find_shader_output(draw, TGSI_SEMANTIC_POSITION, 0);
 239    draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_LINEAR, src);
 240    vinfo->attrib[0].emit = EMIT_4F;
 241    vdecl[0].array.offset = offset;
 242    vdecl[0].identity.method = SVGA3D_DECLMETHOD_DEFAULT;
 243    vdecl[0].identity.type = SVGA3D_DECLTYPE_FLOAT4;
 244    vdecl[0].identity.usage = SVGA3D_DECLUSAGE_POSITIONT;
 245    vdecl[0].identity.usageIndex = 0;
 246    offset += 16;
 247    nr_decls++;
 248
 249    for (i = 0; i < fs->base.info.num_inputs; i++) {
 250       const unsigned sem_name = fs->base.info.input_semantic_name[i];
 251       const unsigned sem_index = fs->base.info.input_semantic_index[i];
 252
 253       src = draw_find_shader_output(draw, sem_name, sem_index);
 254
 255       vdecl[nr_decls].array.offset = offset;
 256       vdecl[nr_decls].identity.usageIndex = sem_index;
 257
 258       switch (sem_name) {
 259       case TGSI_SEMANTIC_COLOR:
 260          draw_emit_vertex_attr(vinfo, EMIT_4F, colorInterp, src);
 261          vdecl[nr_decls].identity.usage = SVGA3D_DECLUSAGE_COLOR;
 262          vdecl[nr_decls].identity.type = SVGA3D_DECLTYPE_FLOAT4;
 263          offset += 16;
 264          nr_decls++;
 265          break;
 266       case TGSI_SEMANTIC_GENERIC:
 267          draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, src);
 268          vdecl[nr_decls].identity.usage = SVGA3D_DECLUSAGE_TEXCOORD;
 269          vdecl[nr_decls].identity.type = SVGA3D_DECLTYPE_FLOAT4;
 270          vdecl[nr_decls].identity.usageIndex =
 271             svga_remap_generic_index(fs->generic_remap_table, sem_index);
 272          offset += 16;
 273          nr_decls++;
 274          break;
 275       case TGSI_SEMANTIC_FOG:
 276          draw_emit_vertex_attr(vinfo, EMIT_1F, INTERP_PERSPECTIVE, src);
 277          vdecl[nr_decls].identity.usage = SVGA3D_DECLUSAGE_TEXCOORD;
 278          vdecl[nr_decls].identity.type = SVGA3D_DECLTYPE_FLOAT1;
 279          assert(vdecl[nr_decls].identity.usageIndex == 0);
 280          offset += 4;
 281          nr_decls++;
 282          break;
 283       case TGSI_SEMANTIC_POSITION:
 284          /* generated internally, not a vertex shader output */
 285          break;
 286       default:
 287          assert(0);
 288       }
 289    }
 290
 291    draw_compute_vertex_size(vinfo);
 292
 293    svga_render->vdecl_count = nr_decls;
 294    for (i = 0; i < svga_render->vdecl_count; i++) {
 295       vdecl[i].array.stride = offset;
 296    }
 297
 298    any_change = memcmp(svga_render->vdecl, vdecl, sizeof(vdecl));
 299
 300    if (svga_have_vgpu10(svga)) {
 301       enum pipe_error ret;
 302
 303       if (!any_change && svga_render->layout_id != SVGA3D_INVALID_ID) {
 304          return PIPE_OK;
 305       }
 306
 307       if (svga_render->layout_id != SVGA3D_INVALID_ID) {
 308          /* destroy old */
 309          ret = SVGA3D_vgpu10_DestroyElementLayout(svga->swc,
 310                                                   svga_render->layout_id);
 311          if (ret != PIPE_OK) {
 312             svga_context_flush(svga, NULL);
 313             ret = SVGA3D_vgpu10_DestroyElementLayout(svga->swc,
 314                                                      svga_render->layout_id);
 315             assert(ret == PIPE_OK);
 316          }
 317
 318          /**
 319           * reset current layout id state after the element layout is
 320           * destroyed, so that if a new layout has the same layout id, we
 321           * will know to re-issue the SetInputLayout command.
 322           */
 323          if (svga->state.hw_draw.layout_id == svga_render->layout_id)
 324             svga->state.hw_draw.layout_id = SVGA3D_INVALID_ID;
 325
 326          util_bitmask_clear(svga->input_element_object_id_bm,
 327                             svga_render->layout_id);
 328       }
 329
 330       svga_render->layout_id =
 331          svga_vdecl_to_input_element(svga, vdecl, nr_decls);
 332
 333       /* bind new */
 334       if (svga->state.hw_draw.layout_id != svga_render->layout_id) {
 335          ret = SVGA3D_vgpu10_SetInputLayout(svga->swc, svga_render->layout_id);
 336          if (ret != PIPE_OK) {
 337             svga_context_flush(svga, NULL);
 338             ret = SVGA3D_vgpu10_SetInputLayout(svga->swc,
 339                                                svga_render->layout_id);
 340             assert(ret == PIPE_OK);
 341          }
 342
 343          svga->state.hw_draw.layout_id = svga_render->layout_id;
 344       }
 345    }
 346    else {
 347       if (!any_change)
 348          return PIPE_OK;
 349    }
 350
 351    memcpy(svga_render->vdecl, vdecl, sizeof(vdecl));
 352    svga->swtnl.new_vdecl = TRUE;
 353
 354    return 0;
 355 }
 356
 357
 358 static enum pipe_error
 359 update_swtnl_vdecl( struct svga_context *svga,
 360                     unsigned dirty )
 361 {
 362    return svga_swtnl_update_vdecl( svga );
 363 }
 364
 365
 366 struct svga_tracked_state svga_update_swtnl_vdecl =
 367 {
 368    "update draw module vdecl",
 369    (SVGA_NEW_VS |
 370     SVGA_NEW_FS),
 371    update_swtnl_vdecl
 372 };