src/mesa/state_tracker/st_draw_feedback.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * 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, sub license, 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 portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "util/imports.h"
  29 #include "main/arrayobj.h"
  30 #include "main/image.h"
  31 #include "main/macros.h"
  32 #include "main/varray.h"
  33
  34 #include "vbo/vbo.h"
  35
  36 #include "st_context.h"
  37 #include "st_atom.h"
  38 #include "st_cb_bitmap.h"
  39 #include "st_cb_bufferobjects.h"
  40 #include "st_draw.h"
  41 #include "st_program.h"
  42 #include "st_util.h"
  43
  44 #include "pipe/p_context.h"
  45 #include "pipe/p_defines.h"
  46 #include "util/u_inlines.h"
  47 #include "util/u_draw.h"
  48 #include "util/format/u_format.h"
  49
  50 #include "draw/draw_private.h"
  51 #include "draw/draw_context.h"
  52
  53
  54 /**
  55  * Set the (private) draw module's post-transformed vertex format when in
  56  * GL_SELECT or GL_FEEDBACK mode or for glRasterPos.
  57  */
  58 static void
  59 set_feedback_vertex_format(struct gl_context *ctx)
  60 {
  61 #if 0
  62    struct st_context *st = st_context(ctx);
  63    struct vertex_info vinfo;
  64    GLuint i;
  65
  66    memset(&vinfo, 0, sizeof(vinfo));
  67
  68    if (ctx->RenderMode == GL_SELECT) {
  69       assert(ctx->RenderMode == GL_SELECT);
  70       vinfo.num_attribs = 1;
  71       vinfo.format[0] = FORMAT_4F;
  72       vinfo.interp_mode[0] = INTERP_LINEAR;
  73    }
  74    else {
  75       /* GL_FEEDBACK, or glRasterPos */
  76       /* emit all attribs (pos, color, texcoord) as GLfloat[4] */
  77       vinfo.num_attribs = st->state.vs->cso->state.num_outputs;
  78       for (i = 0; i < vinfo.num_attribs; i++) {
  79          vinfo.format[i] = FORMAT_4F;
  80          vinfo.interp_mode[i] = INTERP_LINEAR;
  81       }
  82    }
  83
  84    draw_set_vertex_info(st->draw, &vinfo);
  85 #endif
  86 }
  87
  88
  89 /**
  90  * Called by VBO to draw arrays when in selection or feedback mode and
  91  * to implement glRasterPos.
  92  * This function mirrors the normal st_draw_vbo().
  93  * Look at code refactoring some day.
  94  */
  95 void
  96 st_feedback_draw_vbo(struct gl_context *ctx,
  97                      const struct _mesa_prim *prims,
  98                      GLuint nr_prims,
  99                      const struct _mesa_index_buffer *ib,
 100                      GLboolean index_bounds_valid,
 101                      GLuint min_index,
 102                      GLuint max_index,
 103                      GLuint num_instances,
 104                      GLuint base_instance,
 105                      struct gl_transform_feedback_object *tfb_vertcount,
 106                      unsigned stream)
 107 {
 108    struct st_context *st = st_context(ctx);
 109    struct pipe_context *pipe = st->pipe;
 110    struct draw_context *draw = st_get_draw_context(st);
 111    const struct st_vertex_program *vp;
 112    struct st_common_variant *vp_variant;
 113    struct pipe_vertex_buffer vbuffers[PIPE_MAX_SHADER_INPUTS];
 114    unsigned num_vbuffers = 0;
 115    struct cso_velems_state velements;
 116    struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {NULL};
 117    struct pipe_transfer *ib_transfer = NULL;
 118    GLuint i;
 119    const void *mapped_indices = NULL;
 120    struct pipe_draw_info info;
 121
 122    if (!draw)
 123       return;
 124
 125    /* Initialize pipe_draw_info. */
 126    info.primitive_restart = false;
 127    info.vertices_per_patch = ctx->TessCtrlProgram.patch_vertices;
 128    info.indirect = NULL;
 129    info.count_from_stream_output = NULL;
 130    info.restart_index = 0;
 131
 132    st_flush_bitmap_cache(st);
 133    st_invalidate_readpix_cache(st);
 134
 135    st_validate_state(st, ST_PIPELINE_RENDER);
 136
 137    if (ib && !index_bounds_valid)
 138       vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index, nr_prims);
 139
 140    /* must get these after state validation! */
 141    struct st_common_variant_key key;
 142    /* We have to use memcpy to make sure that all bits are copied. */
 143    memcpy(&key, &st->vp_variant->key, sizeof(key));
 144    key.is_draw_shader = true;
 145
 146    vp = (struct st_vertex_program *)st->vp;
 147    vp_variant = st_get_vp_variant(st, st->vp, &key);
 148
 149    /*
 150     * Set up the draw module's state.
 151     *
 152     * We'd like to do this less frequently, but the normal state-update
 153     * code sends state updates to the pipe, not to our private draw module.
 154     */
 155    assert(draw);
 156    draw_set_viewport_states(draw, 0, 1, &st->state.viewport[0]);
 157    draw_set_clip_state(draw, &st->state.clip);
 158    draw_set_rasterizer_state(draw, &st->state.rasterizer, NULL);
 159    draw_bind_vertex_shader(draw, vp_variant->base.driver_shader);
 160    set_feedback_vertex_format(ctx);
 161
 162    /* Must setup these after state validation! */
 163    /* Setup arrays */
 164    bool uses_user_vertex_buffers;
 165    st_setup_arrays(st, vp, vp_variant, &velements, vbuffers, &num_vbuffers,
 166                    &uses_user_vertex_buffers);
 167    /* Setup current values as userspace arrays */
 168    st_setup_current_user(st, vp, vp_variant, &velements, vbuffers, &num_vbuffers);
 169
 170    /* Map all buffers and tell draw about their mapping */
 171    for (unsigned buf = 0; buf < num_vbuffers; ++buf) {
 172       struct pipe_vertex_buffer *vbuffer = &vbuffers[buf];
 173
 174       if (vbuffer->is_user_buffer) {
 175          draw_set_mapped_vertex_buffer(draw, buf, vbuffer->buffer.user, ~0);
 176       } else {
 177          void *map = pipe_buffer_map(pipe, vbuffer->buffer.resource,
 178                                      PIPE_TRANSFER_READ, &vb_transfer[buf]);
 179          draw_set_mapped_vertex_buffer(draw, buf, map,
 180                                        vbuffer->buffer.resource->width0);
 181       }
 182    }
 183
 184    draw_set_vertex_buffers(draw, 0, num_vbuffers, vbuffers);
 185    draw_set_vertex_elements(draw, vp->num_inputs, velements.velems);
 186
 187    unsigned start = 0;
 188
 189    if (ib) {
 190       struct gl_buffer_object *bufobj = ib->obj;
 191       unsigned index_size = 1 << ib->index_size_shift;
 192
 193       if (index_size == 0)
 194          goto out_unref_vertex;
 195
 196       if (bufobj && bufobj->Name) {
 197          struct st_buffer_object *stobj = st_buffer_object(bufobj);
 198
 199          start = pointer_to_offset(ib->ptr) >> ib->index_size_shift;
 200          mapped_indices = pipe_buffer_map(pipe, stobj->buffer,
 201                                           PIPE_TRANSFER_READ, &ib_transfer);
 202       }
 203       else {
 204          mapped_indices = ib->ptr;
 205       }
 206
 207       info.index_size = index_size;
 208       info.min_index = min_index;
 209       info.max_index = max_index;
 210       info.has_user_indices = true;
 211       info.index.user = mapped_indices;
 212
 213       draw_set_indexes(draw,
 214                        (ubyte *) mapped_indices,
 215                        index_size, ~0);
 216
 217       if (ctx->Array._PrimitiveRestart) {
 218          info.primitive_restart = true;
 219          info.restart_index = _mesa_primitive_restart_index(ctx, info.index_size);
 220       }
 221    } else {
 222       info.index_size = 0;
 223       info.has_user_indices = false;
 224    }
 225
 226    /* set constant buffers */
 227    draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
 228                                    st->state.constants[PIPE_SHADER_VERTEX].ptr,
 229                                    st->state.constants[PIPE_SHADER_VERTEX].size);
 230
 231    const struct gl_program *prog = &vp->Base.Base;
 232    struct pipe_transfer *ubo_transfer[PIPE_MAX_CONSTANT_BUFFERS] = {0};
 233    assert(prog->info.num_ubos <= ARRAY_SIZE(ubo_transfer));
 234
 235    for (unsigned i = 0; i < prog->info.num_ubos; i++) {
 236       struct gl_buffer_binding *binding =
 237          &st->ctx->UniformBufferBindings[prog->sh.UniformBlocks[i]->Binding];
 238       struct st_buffer_object *st_obj = st_buffer_object(binding->BufferObject);
 239       struct pipe_resource *buf = st_obj->buffer;
 240
 241       if (!buf)
 242          continue;
 243
 244       unsigned offset = binding->Offset;
 245       unsigned size = buf->width0 - offset;
 246
 247       /* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
 248        * Take the minimum just to be sure.
 249        */
 250       if (!binding->AutomaticSize)
 251          size = MIN2(size, (unsigned) binding->Size);
 252
 253       void *ptr = pipe_buffer_map_range(pipe, buf, offset, size,
 254                                         PIPE_TRANSFER_READ, &ubo_transfer[i]);
 255
 256       draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 1 + i, ptr,
 257                                       size);
 258    }
 259
 260    /* shader buffers */
 261    /* TODO: atomic counter buffers */
 262    struct pipe_transfer *ssbo_transfer[PIPE_MAX_SHADER_BUFFERS] = {0};
 263
 264    for (unsigned i = 0; i < prog->info.num_ssbos; i++) {
 265       struct gl_buffer_binding *binding =
 266          &st->ctx->ShaderStorageBufferBindings[
 267             prog->sh.ShaderStorageBlocks[i]->Binding];
 268       struct st_buffer_object *st_obj = st_buffer_object(binding->BufferObject);
 269       struct pipe_resource *buf = st_obj->buffer;
 270
 271       if (!buf)
 272          continue;
 273
 274       unsigned offset = binding->Offset;
 275       unsigned size = buf->width0 - binding->Offset;
 276
 277       /* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
 278        * Take the minimum just to be sure.
 279        */
 280       if (!binding->AutomaticSize)
 281          size = MIN2(size, (unsigned) binding->Size);
 282
 283       void *ptr = pipe_buffer_map_range(pipe, buf, offset, size,
 284                                         PIPE_TRANSFER_READ, &ssbo_transfer[i]);
 285
 286       draw_set_mapped_shader_buffer(draw, PIPE_SHADER_VERTEX,
 287                                     i, ptr, size);
 288    }
 289
 290    /* samplers */
 291    struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
 292    for (unsigned i = 0; i < st->state.num_vert_samplers; i++)
 293       samplers[i] = &st->state.vert_samplers[i];
 294
 295    draw_set_samplers(draw, PIPE_SHADER_VERTEX, samplers,
 296                      st->state.num_vert_samplers);
 297
 298    /* sampler views */
 299    draw_set_sampler_views(draw, PIPE_SHADER_VERTEX,
 300                           st->state.vert_sampler_views,
 301                           st->state.num_sampler_views[PIPE_SHADER_VERTEX]);
 302
 303    struct pipe_transfer *sv_transfer[PIPE_MAX_SAMPLERS][PIPE_MAX_TEXTURE_LEVELS];
 304
 305    for (unsigned i = 0; i < st->state.num_sampler_views[PIPE_SHADER_VERTEX]; i++) {
 306       struct pipe_sampler_view *view = st->state.vert_sampler_views[i];
 307       if (!view)
 308          continue;
 309
 310       struct pipe_resource *res = view->texture;
 311       unsigned width0 = res->width0;
 312       unsigned num_layers = res->depth0;
 313       unsigned first_level = 0;
 314       unsigned last_level = 0;
 315       uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
 316       uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
 317       uint32_t mip_offset[PIPE_MAX_TEXTURE_LEVELS];
 318       uintptr_t mip_addr[PIPE_MAX_TEXTURE_LEVELS];
 319       uintptr_t base_addr;
 320
 321       if (res->target != PIPE_BUFFER) {
 322          first_level = view->u.tex.first_level;
 323          last_level = view->u.tex.last_level;
 324          num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
 325          base_addr = UINTPTR_MAX;
 326
 327          for (unsigned j = first_level; j <= last_level; j++) {
 328             unsigned map_layers = res->target == PIPE_TEXTURE_3D ?
 329                                      util_num_layers(res, j) : num_layers;
 330
 331             sv_transfer[i][j] = NULL;
 332             mip_addr[j] = (uintptr_t)
 333                           pipe_transfer_map_3d(pipe, res, j,
 334                                                PIPE_TRANSFER_READ, 0, 0,
 335                                                view->u.tex.first_layer,
 336                                                u_minify(res->width0, j),
 337                                                u_minify(res->height0, j),
 338                                                map_layers, &sv_transfer[i][j]);
 339             row_stride[j] = sv_transfer[i][j]->stride;
 340             img_stride[j] = sv_transfer[i][j]->layer_stride;
 341
 342             /* Get the minimum address, because the draw module takes only
 343              * 1 address for the whole texture + uint32 offsets for mip levels,
 344              * so we need to convert mapped resource pointers into that scheme.
 345              */
 346             base_addr = MIN2(base_addr, mip_addr[j]);
 347          }
 348          for (unsigned j = first_level; j <= last_level; j++) {
 349             /* TODO: The draw module should accept pointers for mipmap levels
 350              * instead of offsets. This is unlikely to work on 64-bit archs.
 351              */
 352             assert(mip_addr[j] - base_addr <= UINT32_MAX);
 353             mip_offset[j] = mip_addr[j] - base_addr;
 354          }
 355       } else {
 356          width0 = view->u.buf.size / util_format_get_blocksize(view->format);
 357
 358          /* probably don't really need to fill that out */
 359          mip_offset[0] = 0;
 360          row_stride[0] = 0;
 361          img_stride[0] = 0;
 362
 363          sv_transfer[i][0] = NULL;
 364          base_addr = (uintptr_t)
 365                      pipe_buffer_map_range(pipe, res, view->u.buf.offset,
 366                                            view->u.buf.size,
 367                                            PIPE_TRANSFER_READ,
 368                                            &sv_transfer[i][0]);
 369       }
 370
 371       draw_set_mapped_texture(draw, PIPE_SHADER_VERTEX, i, width0,
 372                               res->height0, num_layers, first_level,
 373                               last_level, (void*)base_addr, row_stride,
 374                               img_stride, mip_offset);
 375    }
 376
 377    /* shader images */
 378    struct pipe_image_view images[PIPE_MAX_SHADER_IMAGES];
 379    struct pipe_transfer *img_transfer[PIPE_MAX_SHADER_IMAGES] = {0};
 380
 381    for (unsigned i = 0; i < prog->info.num_images; i++) {
 382       struct pipe_image_view *img = &images[i];
 383
 384       st_convert_image_from_unit(st, img, prog->sh.ImageUnits[i],
 385                                  prog->sh.ImageAccess[i]);
 386
 387       struct pipe_resource *res = img->resource;
 388       if (!res)
 389          continue;
 390
 391       unsigned width, height, num_layers, row_stride, img_stride;
 392       void *addr;
 393
 394       if (res->target != PIPE_BUFFER) {
 395          width = u_minify(res->width0, img->u.tex.level);
 396          height = u_minify(res->height0, img->u.tex.level);
 397          num_layers = img->u.tex.last_layer - img->u.tex.first_layer + 1;
 398
 399          addr = pipe_transfer_map_3d(pipe, res, img->u.tex.level,
 400                                      PIPE_TRANSFER_READ, 0, 0,
 401                                      img->u.tex.first_layer,
 402                                      width, height, num_layers,
 403                                      &img_transfer[i]);
 404          row_stride = img_transfer[i]->stride;
 405          img_stride = img_transfer[i]->layer_stride;
 406       } else {
 407          width = img->u.buf.size / util_format_get_blocksize(img->format);
 408
 409          /* probably don't really need to fill that out */
 410          row_stride = 0;
 411          img_stride = 0;
 412          height = num_layers = 1;
 413
 414          addr = pipe_buffer_map_range(pipe, res, img->u.buf.offset,
 415                                       img->u.buf.size, PIPE_TRANSFER_READ,
 416                                       &img_transfer[i]);
 417       }
 418
 419       draw_set_mapped_image(draw, PIPE_SHADER_VERTEX, i, width, height,
 420                             num_layers, addr, row_stride, img_stride);
 421    }
 422    draw_set_images(draw, PIPE_SHADER_VERTEX, images, prog->info.num_images);
 423
 424    info.start_instance = base_instance;
 425    info.instance_count = num_instances;
 426
 427    /* draw here */
 428    for (i = 0; i < nr_prims; i++) {
 429       info.count = prims[i].count;
 430
 431       if (!info.count)
 432          continue;
 433
 434       info.mode = prims[i].mode;
 435       info.start = start + prims[i].start;
 436       info.index_bias = prims[i].basevertex;
 437       info.drawid = prims[i].draw_id;
 438       if (!ib) {
 439          info.min_index = info.start;
 440          info.max_index = info.start + info.count - 1;
 441       }
 442
 443       draw_vbo(draw, &info);
 444    }
 445
 446    /* unmap images */
 447    for (unsigned i = 0; i < prog->info.num_images; i++) {
 448       if (img_transfer[i]) {
 449          draw_set_mapped_image(draw, PIPE_SHADER_VERTEX, i, 0, 0, 0, NULL, 0, 0);
 450          pipe_transfer_unmap(pipe, img_transfer[i]);
 451       }
 452    }
 453
 454    /* unmap sampler views */
 455    for (unsigned i = 0; i < st->state.num_sampler_views[PIPE_SHADER_VERTEX]; i++) {
 456       struct pipe_sampler_view *view = st->state.vert_sampler_views[i];
 457
 458       if (view) {
 459          if (view->texture->target != PIPE_BUFFER) {
 460             for (unsigned j = view->u.tex.first_level;
 461                  j <= view->u.tex.last_level; j++) {
 462                pipe_transfer_unmap(pipe, sv_transfer[i][j]);
 463             }
 464          } else {
 465             pipe_transfer_unmap(pipe, sv_transfer[i][0]);
 466          }
 467       }
 468    }
 469
 470    draw_set_samplers(draw, PIPE_SHADER_VERTEX, NULL, 0);
 471    draw_set_sampler_views(draw, PIPE_SHADER_VERTEX, NULL, 0);
 472
 473    for (unsigned i = 0; i < prog->info.num_ssbos; i++) {
 474       if (ssbo_transfer[i]) {
 475          draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 1 + i,
 476                                          NULL, 0);
 477          pipe_buffer_unmap(pipe, ssbo_transfer[i]);
 478       }
 479    }
 480
 481    for (unsigned i = 0; i < prog->info.num_ubos; i++) {
 482       if (ubo_transfer[i]) {
 483          draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 1 + i,
 484                                          NULL, 0);
 485          pipe_buffer_unmap(pipe, ubo_transfer[i]);
 486       }
 487    }
 488
 489    /*
 490     * unmap vertex/index buffers
 491     */
 492    if (ib) {
 493       draw_set_indexes(draw, NULL, 0, 0);
 494       if (ib_transfer)
 495          pipe_buffer_unmap(pipe, ib_transfer);
 496    }
 497
 498  out_unref_vertex:
 499    for (unsigned buf = 0; buf < num_vbuffers; ++buf) {
 500       if (vb_transfer[buf])
 501          pipe_buffer_unmap(pipe, vb_transfer[buf]);
 502       draw_set_mapped_vertex_buffer(draw, buf, NULL, 0);
 503    }
 504    draw_set_vertex_buffers(draw, 0, num_vbuffers, NULL);
 505 }