src/mesa/drivers/dri/i965/brw_blorp.cpp

   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 #include "intel_fbo.h"
  25
  26 #include "brw_blorp.h"
  27 #include "brw_defines.h"
  28 #include "gen6_blorp.h"
  29 #include "gen7_blorp.h"
  30
  31 brw_blorp_mip_info::brw_blorp_mip_info()
  32    : mt(NULL),
  33      width(0),
  34      height(0),
  35      x_offset(0),
  36      y_offset(0)
  37 {
  38 }
  39
  40 brw_blorp_surface_info::brw_blorp_surface_info()
  41    : map_stencil_as_y_tiled(false),
  42      num_samples(0)
  43 {
  44 }
  45
  46 void
  47 brw_blorp_mip_info::set(struct intel_mipmap_tree *mt,
  48                         unsigned int level, unsigned int layer)
  49 {
  50    intel_miptree_check_level_layer(mt, level, layer);
  51
  52    this->mt = mt;
  53    this->width = mt->level[level].width;
  54    this->height = mt->level[level].height;
  55
  56    /* Construct a dummy renderbuffer just to extract tile offsets. */
  57    struct intel_renderbuffer rb;
  58    rb.mt = mt;
  59    rb.mt_level = level;
  60    rb.mt_layer = layer;
  61    intel_renderbuffer_set_draw_offset(&rb);
  62    x_offset = rb.draw_x;
  63    y_offset = rb.draw_y;
  64 }
  65
  66 void
  67 brw_blorp_surface_info::set(struct brw_context *brw,
  68                             struct intel_mipmap_tree *mt,
  69                             unsigned int level, unsigned int layer)
  70 {
  71    brw_blorp_mip_info::set(mt, level, layer);
  72    this->num_samples = mt->num_samples;
  73    this->array_spacing_lod0 = mt->array_spacing_lod0;
  74    this->map_stencil_as_y_tiled = false;
  75    this->msaa_layout = mt->msaa_layout;
  76
  77    switch (mt->format) {
  78    case MESA_FORMAT_S8:
  79       /* The miptree is a W-tiled stencil buffer.  Surface states can't be set
  80        * up for W tiling, so we'll need to use Y tiling and have the WM
  81        * program swizzle the coordinates.
  82        */
  83       this->map_stencil_as_y_tiled = true;
  84       this->brw_surfaceformat = BRW_SURFACEFORMAT_R8_UNORM;
  85       break;
  86    case MESA_FORMAT_X8_Z24:
  87    case MESA_FORMAT_Z32_FLOAT:
  88       /* The miptree consists of 32 bits per pixel, arranged either as 24-bit
  89        * depth values interleaved with 8 "don't care" bits, or as 32-bit
  90        * floating point depth values.  Since depth values don't require any
  91        * blending, it doesn't matter how we interpret the bit pattern as long
  92        * as we copy the right amount of data, so just map it as 8-bit BGRA.
  93        */
  94       this->brw_surfaceformat = BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
  95       break;
  96    case MESA_FORMAT_Z16:
  97       /* The miptree consists of 16 bits per pixel of depth data.  Since depth
  98        * values don't require any blending, it doesn't matter how we interpret
  99        * the bit pattern as long as we copy the right amount of data, so just
 100        * map is as 8-bit RG.
 101        */
 102       this->brw_surfaceformat = BRW_SURFACEFORMAT_R8G8_UNORM;
 103       break;
 104    default:
 105       /* Blorp blits don't support any sort of format conversion, so we can
 106        * safely assume that the same format is being used for the source and
 107        * destination.  Therefore the format must be supported as a render
 108        * target, even if this is the source image.  So we can convert to a
 109        * surface format using brw->render_target_format.
 110        */
 111       assert(brw->format_supported_as_render_target[mt->format]);
 112       this->brw_surfaceformat = brw->render_target_format[mt->format];
 113       break;
 114    }
 115 }
 116
 117 brw_blorp_params::brw_blorp_params()
 118    : x0(0),
 119      y0(0),
 120      x1(0),
 121      y1(0),
 122      depth_format(0),
 123      hiz_op(GEN6_HIZ_OP_NONE),
 124      num_samples(0),
 125      use_wm_prog(false)
 126 {
 127 }
 128
 129 extern "C" {
 130 void
 131 intel_hiz_exec(struct intel_context *intel, struct intel_mipmap_tree *mt,
 132                unsigned int level, unsigned int layer, gen6_hiz_op op)
 133 {
 134    brw_hiz_op_params params(mt, level, layer, op);
 135    brw_blorp_exec(intel, &params);
 136 }
 137
 138 } /* extern "C" */
 139
 140 void
 141 brw_blorp_exec(struct intel_context *intel, const brw_blorp_params *params)
 142 {
 143    switch (intel->gen) {
 144    case 6:
 145       gen6_blorp_exec(intel, params);
 146       break;
 147    case 7:
 148       gen7_blorp_exec(intel, params);
 149       break;
 150    default:
 151       /* BLORP is not supported before Gen6. */
 152       assert(false);
 153       break;
 154    }
 155 }
 156
 157 brw_hiz_op_params::brw_hiz_op_params(struct intel_mipmap_tree *mt,
 158                                      unsigned int level,
 159                                      unsigned int layer,
 160                                      gen6_hiz_op op)
 161 {
 162    this->hiz_op = op;
 163
 164    depth.set(mt, level, layer);
 165    x1 = depth.width;
 166    y1 = depth.height;
 167
 168    assert(mt->hiz_mt != NULL);
 169
 170    switch (mt->format) {
 171    case MESA_FORMAT_Z16:       depth_format = BRW_DEPTHFORMAT_D16_UNORM; break;
 172    case MESA_FORMAT_Z32_FLOAT: depth_format = BRW_DEPTHFORMAT_D32_FLOAT; break;
 173    case MESA_FORMAT_X8_Z24:    depth_format = BRW_DEPTHFORMAT_D24_UNORM_X8_UINT; break;
 174    default:                    assert(0); break;
 175    }
 176 }
 177
 178 uint32_t
 179 brw_hiz_op_params::get_wm_prog(struct brw_context *brw,
 180                                brw_blorp_prog_data **prog_data) const
 181 {
 182    return 0;
 183 }