Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

  1. /*
  2.  * Copyright © 2012 Intel Corporation
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person obtaining a
  5.  * copy of this software and associated documentation files (the "Software"),
  6.  * to deal in the Software without restriction, including without limitation
  7.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8.  * and/or sell copies of the Software, and to permit persons to whom the
  9.  * Software is furnished to do so, subject to the following conditions:
  10.  *
  11.  * The above copyright notice and this permission notice (including the next
  12.  * paragraph) shall be included in all copies or substantial portions of the
  13.  * Software.
  14.  *
  15.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21.  * IN THE SOFTWARE.
  22.  */
  23.  
  24. /**
  25.  * @file gen8_sol_state.c
  26.  *
  27.  * Controls the stream output logic (SOL) stage of the gen8 hardware, which is
  28.  * used to implement GL_EXT_transform_feedback.
  29.  */
  30.  
  31. #include "brw_context.h"
  32. #include "brw_state.h"
  33. #include "brw_defines.h"
  34. #include "intel_batchbuffer.h"
  35. #include "intel_buffer_objects.h"
  36. #include "main/transformfeedback.h"
  37.  
  38. static void
  39. gen8_upload_3dstate_so_buffers(struct brw_context *brw)
  40. {
  41.    struct gl_context *ctx = &brw->ctx;
  42.    /* BRW_NEW_TRANSFORM_FEEDBACK */
  43.    struct gl_transform_feedback_object *xfb_obj =
  44.       ctx->TransformFeedback.CurrentObject;
  45.    struct brw_transform_feedback_object *brw_obj =
  46.       (struct brw_transform_feedback_object *) xfb_obj;
  47.    uint32_t mocs_wb = brw->gen >= 9 ? SKL_MOCS_WB : BDW_MOCS_WB;
  48.  
  49.    /* Set up the up to 4 output buffers.  These are the ranges defined in the
  50.     * gl_transform_feedback_object.
  51.     */
  52.    for (int i = 0; i < 4; i++) {
  53.       struct intel_buffer_object *bufferobj =
  54.          intel_buffer_object(xfb_obj->Buffers[i]);
  55.  
  56.       if (!bufferobj) {
  57.          BEGIN_BATCH(8);
  58.          OUT_BATCH(_3DSTATE_SO_BUFFER << 16 | (8 - 2));
  59.          OUT_BATCH((i << SO_BUFFER_INDEX_SHIFT));
  60.          OUT_BATCH(0);
  61.          OUT_BATCH(0);
  62.          OUT_BATCH(0);
  63.          OUT_BATCH(0);
  64.          OUT_BATCH(0);
  65.          OUT_BATCH(0);
  66.          ADVANCE_BATCH();
  67.          continue;
  68.       }
  69.  
  70.       uint32_t start = xfb_obj->Offset[i];
  71.       assert(start % 4 == 0);
  72.       uint32_t end = ALIGN(start + xfb_obj->Size[i], 4);
  73.       drm_intel_bo *bo =
  74.          intel_bufferobj_buffer(brw, bufferobj, start, end - start);
  75.       assert(end <= bo->size);
  76.  
  77.       perf_debug("Missing MOCS setup for 3DSTATE_SO_BUFFER.");
  78.  
  79.       BEGIN_BATCH(8);
  80.       OUT_BATCH(_3DSTATE_SO_BUFFER << 16 | (8 - 2));
  81.       OUT_BATCH(GEN8_SO_BUFFER_ENABLE | (i << SO_BUFFER_INDEX_SHIFT) |
  82.                 GEN8_SO_BUFFER_OFFSET_WRITE_ENABLE |
  83.                 GEN8_SO_BUFFER_OFFSET_ADDRESS_ENABLE |
  84.                 (mocs_wb << 22));
  85.       OUT_RELOC64(bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, start);
  86.       OUT_BATCH(xfb_obj->Size[i] / 4 - 1);
  87.       OUT_RELOC64(brw_obj->offset_bo,
  88.                   I915_GEM_DOMAIN_INSTRUCTION, I915_GEM_DOMAIN_INSTRUCTION,
  89.                   i * sizeof(uint32_t));
  90.       if (brw_obj->zero_offsets)
  91.          OUT_BATCH(0); /* Zero out the offset and write that to offset_bo */
  92.       else
  93.          OUT_BATCH(0xFFFFFFFF); /* Use offset_bo as the "Stream Offset." */
  94.       ADVANCE_BATCH();
  95.    }
  96.    brw_obj->zero_offsets = false;
  97. }
  98.  
  99. static void
  100. gen8_upload_3dstate_streamout(struct brw_context *brw, bool active,
  101.                               struct brw_vue_map *vue_map)
  102. {
  103.    struct gl_context *ctx = &brw->ctx;
  104.  
  105.    /* BRW_NEW_TRANSFORM_FEEDBACK */
  106.    struct gl_transform_feedback_object *xfb_obj =
  107.       ctx->TransformFeedback.CurrentObject;
  108.    const struct gl_transform_feedback_info *linked_xfb_info =
  109.       &xfb_obj->shader_program->LinkedTransformFeedback;
  110.    uint32_t dw1 = 0, dw2 = 0, dw3 = 0, dw4 = 0;
  111.  
  112.    if (active) {
  113.       int urb_entry_read_offset = 0;
  114.       int urb_entry_read_length = (vue_map->num_slots + 1) / 2 -
  115.          urb_entry_read_offset;
  116.  
  117.       dw1 |= SO_FUNCTION_ENABLE;
  118.       dw1 |= SO_STATISTICS_ENABLE;
  119.  
  120.       /* _NEW_LIGHT */
  121.       if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION)
  122.          dw1 |= SO_REORDER_TRAILING;
  123.  
  124.       /* We always read the whole vertex.  This could be reduced at some
  125.        * point by reading less and offsetting the register index in the
  126.        * SO_DECLs.
  127.        */
  128.       dw2 |= SET_FIELD(urb_entry_read_offset, SO_STREAM_0_VERTEX_READ_OFFSET);
  129.       dw2 |= SET_FIELD(urb_entry_read_length - 1, SO_STREAM_0_VERTEX_READ_LENGTH);
  130.  
  131.       dw2 |= SET_FIELD(urb_entry_read_offset, SO_STREAM_1_VERTEX_READ_OFFSET);
  132.       dw2 |= SET_FIELD(urb_entry_read_length - 1, SO_STREAM_1_VERTEX_READ_LENGTH);
  133.  
  134.       dw2 |= SET_FIELD(urb_entry_read_offset, SO_STREAM_2_VERTEX_READ_OFFSET);
  135.       dw2 |= SET_FIELD(urb_entry_read_length - 1, SO_STREAM_2_VERTEX_READ_LENGTH);
  136.  
  137.       dw2 |= SET_FIELD(urb_entry_read_offset, SO_STREAM_3_VERTEX_READ_OFFSET);
  138.       dw2 |= SET_FIELD(urb_entry_read_length - 1, SO_STREAM_3_VERTEX_READ_LENGTH);
  139.  
  140.       /* Set buffer pitches; 0 means unbound. */
  141.       if (xfb_obj->Buffers[0])
  142.          dw3 |= linked_xfb_info->BufferStride[0] * 4;
  143.       if (xfb_obj->Buffers[1])
  144.          dw3 |= (linked_xfb_info->BufferStride[1] * 4) << 16;
  145.       if (xfb_obj->Buffers[2])
  146.          dw4 |= linked_xfb_info->BufferStride[2] * 4;
  147.       if (xfb_obj->Buffers[3])
  148.          dw4 |= (linked_xfb_info->BufferStride[3] * 4) << 16;
  149.    }
  150.  
  151.    BEGIN_BATCH(5);
  152.    OUT_BATCH(_3DSTATE_STREAMOUT << 16 | (5 - 2));
  153.    OUT_BATCH(dw1);
  154.    OUT_BATCH(dw2);
  155.    OUT_BATCH(dw3);
  156.    OUT_BATCH(dw4);
  157.    ADVANCE_BATCH();
  158. }
  159.  
  160. static void
  161. upload_sol_state(struct brw_context *brw)
  162. {
  163.    struct gl_context *ctx = &brw->ctx;
  164.    /* BRW_NEW_TRANSFORM_FEEDBACK */
  165.    bool active = _mesa_is_xfb_active_and_unpaused(ctx);
  166.  
  167.    if (active) {
  168.       gen8_upload_3dstate_so_buffers(brw);
  169.       /* BRW_NEW_VUE_MAP_GEOM_OUT */
  170.       gen7_upload_3dstate_so_decl_list(brw, &brw->vue_map_geom_out);
  171.    }
  172.  
  173.    gen8_upload_3dstate_streamout(brw, active, &brw->vue_map_geom_out);
  174. }
  175.  
  176. const struct brw_tracked_state gen8_sol_state = {
  177.    .dirty = {
  178.       .mesa  = _NEW_LIGHT,
  179.       .brw   = BRW_NEW_BATCH |
  180.                BRW_NEW_TRANSFORM_FEEDBACK |
  181.                BRW_NEW_VUE_MAP_GEOM_OUT,
  182.    },
  183.    .emit = upload_sol_state,
  184. };
  185.