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  1. /*
  2.  * Mesa 3-D graphics library
  3.  *
  4.  * Copyright (C) 2012-2013 LunarG, Inc.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the "Software"),
  8.  * to deal in the Software without restriction, including without limitation
  9.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10.  * and/or sell copies of the Software, and to permit persons to whom the
  11.  * Software is furnished to do so, subject to the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice shall be included
  14.  * in all copies or substantial portions of the Software.
  15.  *
  16.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22.  * DEALINGS IN THE SOFTWARE.
  23.  *
  24.  * Authors:
  25.  *    Chia-I Wu <olv@lunarg.com>
  26.  */
  27.  
  28. #include "util/u_upload_mgr.h"
  29. #include "ilo_context.h"
  30. #include "ilo_render.h"
  31. #include "ilo_shader.h"
  32. #include "ilo_gpgpu.h"
  33.  
  34. static void
  35. launch_grid(struct ilo_context *ilo,
  36.             const uint *block_layout, const uint *grid_layout,
  37.             const struct pipe_constant_buffer *input, uint32_t pc)
  38. {
  39.    const unsigned grid_offset[3] = { 0, 0, 0 };
  40.    const unsigned thread_group_size =
  41.       block_layout[0] * block_layout[1] * block_layout[2];
  42.    int max_len, before_space;
  43.  
  44.    ilo_cp_set_owner(ilo->cp, INTEL_RING_RENDER, NULL);
  45.  
  46.    max_len = ilo_render_get_launch_grid_len(ilo->render, &ilo->state_vector);
  47.    max_len += ilo_render_get_flush_len(ilo->render) * 2;
  48.  
  49.    if (max_len > ilo_cp_space(ilo->cp)) {
  50.       ilo_cp_submit(ilo->cp, "out of space");
  51.       assert(max_len <= ilo_cp_space(ilo->cp));
  52.    }
  53.  
  54.    before_space = ilo_cp_space(ilo->cp);
  55.  
  56.    while (true) {
  57.       struct ilo_builder_snapshot snapshot;
  58.  
  59.       ilo_builder_batch_snapshot(&ilo->cp->builder, &snapshot);
  60.  
  61.       ilo_render_emit_launch_grid(ilo->render, &ilo->state_vector,
  62.             grid_offset, grid_layout, thread_group_size, input, pc);
  63.  
  64.       if (!ilo_builder_validate(&ilo->cp->builder, 0, NULL)) {
  65.          ilo_builder_batch_restore(&ilo->cp->builder, &snapshot);
  66.  
  67.          /* flush and try again */
  68.          if (ilo_builder_batch_used(&ilo->cp->builder)) {
  69.             ilo_cp_submit(ilo->cp, "out of aperture");
  70.             continue;
  71.          }
  72.       }
  73.  
  74.       break;
  75.    }
  76.  
  77.    /* sanity check size estimation */
  78.    assert(before_space - ilo_cp_space(ilo->cp) <= max_len);
  79. }
  80.  
  81. static void
  82. ilo_launch_grid(struct pipe_context *pipe,
  83.                 const uint *block_layout, const uint *grid_layout,
  84.                 uint32_t pc, const void *input)
  85. {
  86.    struct ilo_context *ilo = ilo_context(pipe);
  87.    struct ilo_shader_state *cs = ilo->state_vector.cs;
  88.    struct pipe_constant_buffer input_buf;
  89.  
  90.    memset(&input_buf, 0, sizeof(input_buf));
  91.  
  92.    input_buf.buffer_size =
  93.       ilo_shader_get_kernel_param(cs, ILO_KERNEL_CS_INPUT_SIZE);
  94.    if (input_buf.buffer_size) {
  95.       u_upload_data(ilo->uploader, 0, input_buf.buffer_size, input,
  96.             &input_buf.buffer_offset, &input_buf.buffer);
  97.    }
  98.  
  99.    ilo_shader_cache_upload(ilo->shader_cache, &ilo->cp->builder);
  100.  
  101.    launch_grid(ilo, block_layout, grid_layout, &input_buf, pc);
  102.  
  103.    ilo_render_invalidate_hw(ilo->render);
  104.  
  105.    if (ilo_debug & ILO_DEBUG_NOCACHE)
  106.       ilo_render_emit_flush(ilo->render);
  107.  
  108.    if (input_buf.buffer_size)
  109.       pipe_resource_reference(&input_buf.buffer, NULL);
  110. }
  111.  
  112. /**
  113.  * Initialize GPGPU-related functions.
  114.  */
  115. void
  116. ilo_init_gpgpu_functions(struct ilo_context *ilo)
  117. {
  118.    ilo->base.launch_grid = ilo_launch_grid;
  119. }
  120.