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 "main/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                      struct gl_transform_feedback_object *tfb_vertcount,
 104                      unsigned stream,
 105                      struct gl_buffer_object *indirect)
 106 {
 107    struct st_context *st = st_context(ctx);
 108    struct pipe_context *pipe = st->pipe;
 109    struct draw_context *draw = st_get_draw_context(st);
 110    const struct st_vertex_program *vp;
 111    struct st_vp_variant *vp_variant;
 112    struct pipe_vertex_buffer vbuffers[PIPE_MAX_SHADER_INPUTS];
 113    unsigned num_vbuffers = 0;
 114    struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
 115    struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {NULL};
 116    struct pipe_transfer *ib_transfer = NULL;
 117    GLuint i;
 118    const void *mapped_indices = NULL;
 119    struct pipe_draw_info info;
 120
 121    if (!draw)
 122       return;
 123
 124    /* Initialize pipe_draw_info. */
 125    info.primitive_restart = false;
 126    info.vertices_per_patch = ctx->TessCtrlProgram.patch_vertices;
 127    info.indirect = NULL;
 128    info.count_from_stream_output = NULL;
 129    info.restart_index = 0;
 130
 131    st_flush_bitmap_cache(st);
 132    st_invalidate_readpix_cache(st);
 133
 134    st_validate_state(st, ST_PIPELINE_RENDER);
 135
 136    if (!index_bounds_valid)
 137       vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index, nr_prims);
 138
 139    /* must get these after state validation! */
 140    vp = (struct st_vertex_program *)st->vp;
 141    vp_variant = st->vp_variant;
 142
 143    struct pipe_shader_state state = {0};
 144    state.type = PIPE_SHADER_IR_TGSI;
 145    state.tokens = vp_variant->tokens;
 146
 147    if (!vp_variant->draw_shader) {
 148       vp_variant->draw_shader = draw_create_vertex_shader(draw, &state);
 149    }
 150
 151    /*
 152     * Set up the draw module's state.
 153     *
 154     * We'd like to do this less frequently, but the normal state-update
 155     * code sends state updates to the pipe, not to our private draw module.
 156     */
 157    assert(draw);
 158    draw_set_viewport_states(draw, 0, 1, &st->state.viewport[0]);
 159    draw_set_clip_state(draw, &st->state.clip);
 160    draw_set_rasterizer_state(draw, &st->state.rasterizer, NULL);
 161    draw_bind_vertex_shader(draw, vp_variant->draw_shader);
 162    set_feedback_vertex_format(ctx);
 163
 164    /* Must setup these after state validation! */
 165    /* Setup arrays */
 166    st_setup_arrays(st, vp, vp_variant, velements, vbuffers, &num_vbuffers);
 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);
 186
 187    unsigned start = 0;
 188
 189    if (ib) {
 190       struct gl_buffer_object *bufobj = ib->obj;
 191       unsigned index_size = ib->index_size;
 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) / index_size;
 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 = ib->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    /* samplers */
 261    struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
 262    for (unsigned i = 0; i < st->state.num_vert_samplers; i++)
 263       samplers[i] = &st->state.vert_samplers[i];
 264
 265    draw_set_samplers(draw, PIPE_SHADER_VERTEX, samplers,
 266                      st->state.num_vert_samplers);
 267
 268    /* sampler views */
 269    draw_set_sampler_views(draw, PIPE_SHADER_VERTEX,
 270                           st->state.vert_sampler_views,
 271                           st->state.num_sampler_views[PIPE_SHADER_VERTEX]);
 272
 273    struct pipe_transfer *sv_transfer[PIPE_MAX_SAMPLERS][PIPE_MAX_TEXTURE_LEVELS];
 274
 275    for (unsigned i = 0; i < st->state.num_sampler_views[PIPE_SHADER_VERTEX]; i++) {
 276       struct pipe_sampler_view *view = st->state.vert_sampler_views[i];
 277       if (!view)
 278          continue;
 279
 280       struct pipe_resource *res = view->texture;
 281       unsigned width0 = res->width0;
 282       unsigned num_layers = res->depth0;
 283       unsigned first_level = 0;
 284       unsigned last_level = 0;
 285       uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
 286       uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
 287       uint32_t mip_offset[PIPE_MAX_TEXTURE_LEVELS];
 288       uintptr_t mip_addr[PIPE_MAX_TEXTURE_LEVELS];
 289       uintptr_t base_addr;
 290
 291       if (res->target != PIPE_BUFFER) {
 292          first_level = view->u.tex.first_level;
 293          last_level = view->u.tex.last_level;
 294          num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
 295          base_addr = UINTPTR_MAX;
 296
 297          for (unsigned j = first_level; j <= last_level; j++) {
 298             unsigned map_layers = res->target == PIPE_TEXTURE_3D ?
 299                                      util_num_layers(res, j) : num_layers;
 300
 301             sv_transfer[i][j] = NULL;
 302             mip_addr[j] = (uintptr_t)
 303                           pipe_transfer_map_3d(pipe, res, j,
 304                                                PIPE_TRANSFER_READ, 0, 0,
 305                                                view->u.tex.first_layer,
 306                                                u_minify(res->width0, j),
 307                                                u_minify(res->height0, j),
 308                                                map_layers, &sv_transfer[i][j]);
 309             row_stride[j] = sv_transfer[i][j]->stride;
 310             img_stride[j] = sv_transfer[i][j]->layer_stride;
 311
 312             /* Get the minimum address, because the draw module takes only
 313              * 1 address for the whole texture + uint32 offsets for mip levels,
 314              * so we need to convert mapped resource pointers into that scheme.
 315              */
 316             base_addr = MIN2(base_addr, mip_addr[j]);
 317          }
 318          for (unsigned j = first_level; j <= last_level; j++) {
 319             /* TODO: The draw module should accept pointers for mipmap levels
 320              * instead of offsets. This is unlikely to work on 64-bit archs.
 321              */
 322             assert(mip_addr[j] - base_addr <= UINT32_MAX);
 323             mip_offset[j] = mip_addr[j] - base_addr;
 324          }
 325       } else {
 326          width0 = view->u.buf.size / util_format_get_blocksize(view->format);
 327
 328          /* probably don't really need to fill that out */
 329          mip_offset[0] = 0;
 330          row_stride[0] = 0;
 331          img_stride[0] = 0;
 332
 333          sv_transfer[i][0] = NULL;
 334          base_addr = (uintptr_t)
 335                      pipe_buffer_map_range(pipe, res, view->u.buf.offset,
 336                                            view->u.buf.size,
 337                                            PIPE_TRANSFER_READ,
 338                                            &sv_transfer[i][0]);
 339       }
 340
 341       draw_set_mapped_texture(draw, PIPE_SHADER_VERTEX, i, width0,
 342                               res->height0, num_layers, first_level,
 343                               last_level, (void*)base_addr, row_stride,
 344                               img_stride, mip_offset);
 345    }
 346
 347    /* draw here */
 348    for (i = 0; i < nr_prims; i++) {
 349       info.count = prims[i].count;
 350
 351       if (!info.count)
 352          continue;
 353
 354       info.mode = prims[i].mode;
 355       info.start = start + prims[i].start;
 356       info.start_instance = prims[i].base_instance;
 357       info.instance_count = prims[i].num_instances;
 358       info.index_bias = prims[i].basevertex;
 359       info.drawid = prims[i].draw_id;
 360       if (!ib) {
 361          info.min_index = info.start;
 362          info.max_index = info.start + info.count - 1;
 363       }
 364
 365       draw_vbo(draw, &info);
 366    }
 367
 368    /* unmap sampler views */
 369    for (unsigned i = 0; i < st->state.num_sampler_views[PIPE_SHADER_VERTEX]; i++) {
 370       struct pipe_sampler_view *view = st->state.vert_sampler_views[i];
 371
 372       if (view) {
 373          if (view->texture->target != PIPE_BUFFER) {
 374             for (unsigned j = view->u.tex.first_level;
 375                  j <= view->u.tex.last_level; j++) {
 376                pipe_transfer_unmap(pipe, sv_transfer[i][j]);
 377             }
 378          } else {
 379             pipe_transfer_unmap(pipe, sv_transfer[i][0]);
 380          }
 381       }
 382    }
 383
 384    draw_set_samplers(draw, PIPE_SHADER_VERTEX, NULL, 0);
 385    draw_set_sampler_views(draw, PIPE_SHADER_VERTEX, NULL, 0);
 386
 387    for (unsigned i = 0; i < prog->info.num_ubos; i++) {
 388       if (ubo_transfer[i]) {
 389          draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 1 + i,
 390                                          NULL, 0);
 391          pipe_buffer_unmap(pipe, ubo_transfer[i]);
 392       }
 393    }
 394
 395    /*
 396     * unmap vertex/index buffers
 397     */
 398    if (ib) {
 399       draw_set_indexes(draw, NULL, 0, 0);
 400       if (ib_transfer)
 401          pipe_buffer_unmap(pipe, ib_transfer);
 402    }
 403
 404  out_unref_vertex:
 405    for (unsigned buf = 0; buf < num_vbuffers; ++buf) {
 406       if (vb_transfer[buf])
 407          pipe_buffer_unmap(pipe, vb_transfer[buf]);
 408       draw_set_mapped_vertex_buffer(draw, buf, NULL, 0);
 409    }
 410    draw_set_vertex_buffers(draw, 0, num_vbuffers, NULL);
 411 }