src/gallium/drivers/iris/iris_clear.c

   1 /*
   2  * Copyright © 2017 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 shall be included
  12  * in all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  15  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20  * DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #include <stdio.h>
  24 #include <errno.h>
  25 #include "pipe/p_defines.h"
  26 #include "pipe/p_state.h"
  27 #include "pipe/p_context.h"
  28 #include "pipe/p_screen.h"
  29 #include "util/u_inlines.h"
  30 #include "util/u_format.h"
  31 #include "util/u_upload_mgr.h"
  32 #include "util/ralloc.h"
  33 #include "iris_context.h"
  34 #include "iris_resource.h"
  35 #include "iris_screen.h"
  36 #include "intel/compiler/brw_compiler.h"
  37
  38 static void
  39 clear_color(struct iris_context *ice,
  40             struct pipe_resource *p_res,
  41             unsigned level,
  42             const struct pipe_box *box,
  43             bool render_condition_enabled,
  44             enum isl_format format,
  45             union isl_color_value color)
  46 {
  47    struct iris_resource *res = (void *) p_res;
  48
  49    struct iris_batch *batch = &ice->batches[IRIS_BATCH_RENDER];
  50    const struct gen_device_info *devinfo = &batch->screen->devinfo;
  51    enum blorp_batch_flags blorp_flags = 0;
  52
  53    if (render_condition_enabled) {
  54       if (ice->state.predicate == IRIS_PREDICATE_STATE_DONT_RENDER)
  55          return;
  56
  57       if (ice->state.predicate == IRIS_PREDICATE_STATE_USE_BIT)
  58          blorp_flags |= BLORP_BATCH_PREDICATE_ENABLE;
  59    }
  60
  61    iris_batch_maybe_flush(batch, 1500);
  62
  63    struct blorp_batch blorp_batch;
  64    blorp_batch_init(&ice->blorp, &blorp_batch, batch, blorp_flags);
  65
  66    bool color_write_disable[4] = { false, false, false, false };
  67    struct blorp_surf surf;
  68    iris_blorp_surf_for_resource(&surf, p_res, ISL_AUX_USAGE_NONE, true);
  69
  70    if (!isl_format_supports_rendering(devinfo, format) &&
  71        isl_format_is_rgbx(format))
  72       format = isl_format_rgbx_to_rgba(format);
  73
  74    blorp_clear(&blorp_batch, &surf, format, ISL_SWIZZLE_IDENTITY,
  75                level, box->z, box->depth, box->x, box->y,
  76                box->x + box->width, box->y + box->height,
  77                color, color_write_disable);
  78
  79    blorp_batch_finish(&blorp_batch);
  80    iris_flush_and_dirty_for_history(ice, batch, res);
  81 }
  82
  83
  84 static void
  85 clear_depth_stencil(struct iris_context *ice,
  86                     struct pipe_resource *p_res,
  87                     unsigned level,
  88                     const struct pipe_box *box,
  89                     bool render_condition_enabled,
  90                     bool clear_depth,
  91                     bool clear_stencil,
  92                     float depth,
  93                     uint8_t stencil)
  94 {
  95    struct iris_resource *res = (void *) p_res;
  96
  97    struct iris_batch *batch = &ice->batches[IRIS_BATCH_RENDER];
  98    enum blorp_batch_flags blorp_flags = 0;
  99
 100    if (render_condition_enabled) {
 101       if (ice->state.predicate == IRIS_PREDICATE_STATE_DONT_RENDER)
 102          return;
 103
 104       if (ice->state.predicate == IRIS_PREDICATE_STATE_USE_BIT)
 105          blorp_flags |= BLORP_BATCH_PREDICATE_ENABLE;
 106    }
 107
 108    iris_batch_maybe_flush(batch, 1500);
 109
 110    struct blorp_batch blorp_batch;
 111    blorp_batch_init(&ice->blorp, &blorp_batch, batch, blorp_flags);
 112
 113    struct iris_resource *z_res;
 114    struct iris_resource *stencil_res;
 115    struct blorp_surf z_surf;
 116    struct blorp_surf stencil_surf;
 117
 118    iris_get_depth_stencil_resources(p_res, &z_res, &stencil_res);
 119
 120    if (z_res) {
 121       iris_blorp_surf_for_resource(&z_surf, &z_res->base,
 122                                    ISL_AUX_USAGE_NONE, true);
 123    }
 124
 125    if (stencil_res) {
 126       iris_blorp_surf_for_resource(&stencil_surf, &stencil_res->base,
 127                                    ISL_AUX_USAGE_NONE, true);
 128    }
 129
 130    blorp_clear_depth_stencil(&blorp_batch, &z_surf, &stencil_surf,
 131                              level, box->z, box->depth,
 132                              box->x, box->y,
 133                              box->x + box->width,
 134                              box->y + box->height,
 135                              clear_depth && z_res, depth,
 136                              clear_stencil && stencil_res ? 0xff : 0, stencil);
 137
 138    blorp_batch_finish(&blorp_batch);
 139    iris_flush_and_dirty_for_history(ice, batch, res);
 140 }
 141
 142 /**
 143  * The pipe->clear() driver hook.
 144  *
 145  * This clears buffers attached to the current draw framebuffer.
 146  */
 147 static void
 148 iris_clear(struct pipe_context *ctx,
 149            unsigned buffers,
 150            const union pipe_color_union *p_color,
 151            double depth,
 152            unsigned stencil)
 153 {
 154    struct iris_context *ice = (void *) ctx;
 155    struct pipe_framebuffer_state *cso_fb = &ice->state.framebuffer;
 156
 157    assert(buffers != 0);
 158
 159    if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {
 160       struct pipe_surface *psurf = cso_fb->zsbuf;
 161       struct pipe_box box = {
 162          .width = cso_fb->width,
 163          .height = cso_fb->height,
 164          .depth = psurf->u.tex.last_layer - psurf->u.tex.first_layer + 1,
 165          .z = psurf->u.tex.first_layer,
 166       };
 167
 168       clear_depth_stencil(ice, psurf->texture, psurf->u.tex.level, &box, true,
 169                           buffers & PIPE_CLEAR_DEPTH,
 170                           buffers & PIPE_CLEAR_STENCIL,
 171                           depth, stencil);
 172    }
 173
 174    if (buffers & PIPE_CLEAR_COLOR) {
 175       /* pipe_color_union and isl_color_value are interchangeable */
 176       union isl_color_value *color = (void *) p_color;
 177
 178       for (unsigned i = 0; i < cso_fb->nr_cbufs; i++) {
 179          if (buffers & (PIPE_CLEAR_COLOR0 << i)) {
 180             struct pipe_surface *psurf = cso_fb->cbufs[i];
 181             struct iris_surface *isurf = (void *) psurf;
 182             struct pipe_box box = {
 183                .width = cso_fb->width,
 184                .height = cso_fb->height,
 185                .depth = psurf->u.tex.last_layer - psurf->u.tex.first_layer + 1,
 186                .z = psurf->u.tex.first_layer,
 187             };
 188
 189             clear_color(ice, psurf->texture, psurf->u.tex.level, &box,
 190                         true, isurf->view.format, *color);
 191          }
 192       }
 193    }
 194 }
 195
 196 /**
 197  * The pipe->clear_texture() driver hook.
 198  *
 199  * This clears the given texture resource.
 200  */
 201 static void
 202 iris_clear_texture(struct pipe_context *ctx,
 203                    struct pipe_resource *p_res,
 204                    unsigned level,
 205                    const struct pipe_box *box,
 206                    const void *data)
 207 {
 208    struct iris_context *ice = (void *) ctx;
 209    struct iris_screen *screen = (void *) ctx->screen;
 210    const struct gen_device_info *devinfo = &screen->devinfo;
 211
 212    if (util_format_is_depth_or_stencil(p_res->format)) {
 213       const struct util_format_description *fmt_desc =
 214          util_format_description(p_res->format);
 215
 216       float depth = 0.0;
 217       uint8_t stencil = 0;
 218
 219       if (fmt_desc->unpack_z_float)
 220          fmt_desc->unpack_z_float(&depth, 0, data, 0, 1, 1);
 221
 222       if (fmt_desc->unpack_s_8uint)
 223          fmt_desc->unpack_s_8uint(&stencil, 0, data, 0, 1, 1);
 224
 225       clear_depth_stencil(ice, p_res, level, box, true, true, true,
 226                           depth, stencil);
 227    } else {
 228       union isl_color_value color;
 229       struct iris_resource *res = (void *) p_res;
 230       enum isl_format format = res->surf.format;
 231
 232       if (!isl_format_supports_rendering(devinfo, format)) {
 233          const struct isl_format_layout *fmtl = isl_format_get_layout(format);
 234          // XXX: actually just get_copy_format_for_bpb from BLORP
 235          // XXX: don't cut and paste this
 236          switch (fmtl->bpb) {
 237          case 8:   format = ISL_FORMAT_R8_UINT;           break;
 238          case 16:  format = ISL_FORMAT_R8G8_UINT;         break;
 239          case 24:  format = ISL_FORMAT_R8G8B8_UINT;       break;
 240          case 32:  format = ISL_FORMAT_R8G8B8A8_UINT;     break;
 241          case 48:  format = ISL_FORMAT_R16G16B16_UINT;    break;
 242          case 64:  format = ISL_FORMAT_R16G16B16A16_UINT; break;
 243          case 96:  format = ISL_FORMAT_R32G32B32_UINT;    break;
 244          case 128: format = ISL_FORMAT_R32G32B32A32_UINT; break;
 245          default:
 246             unreachable("Unknown format bpb");
 247          }
 248       }
 249
 250       isl_color_value_unpack(&color, format, data);
 251
 252       clear_color(ice, p_res, level, box, true, format, color);
 253    }
 254 }
 255
 256 /**
 257  * The pipe->clear_render_target() driver hook.
 258  *
 259  * This clears the given render target surface.
 260  */
 261 static void
 262 iris_clear_render_target(struct pipe_context *ctx,
 263                          struct pipe_surface *psurf,
 264                          const union pipe_color_union *p_color,
 265                          unsigned dst_x, unsigned dst_y,
 266                          unsigned width, unsigned height,
 267                          bool render_condition_enabled)
 268 {
 269    struct iris_context *ice = (void *) ctx;
 270    struct iris_surface *isurf = (void *) psurf;
 271    struct pipe_box box = {
 272       .x = dst_x,
 273       .y = dst_y,
 274       .z = psurf->u.tex.first_layer,
 275       .width = width,
 276       .height = height,
 277       .depth = psurf->u.tex.last_layer - psurf->u.tex.first_layer + 1
 278    };
 279
 280    /* pipe_color_union and isl_color_value are interchangeable */
 281    union isl_color_value *color = (void *) p_color;
 282
 283    clear_color(ice, psurf->texture, psurf->u.tex.level, &box, true,
 284                isurf->view.format, *color);
 285 }
 286
 287 /**
 288  * The pipe->clear_depth_stencil() driver hook.
 289  *
 290  * This clears the given depth/stencil surface.
 291  */
 292 static void
 293 iris_clear_depth_stencil(struct pipe_context *ctx,
 294                          struct pipe_surface *psurf,
 295                          unsigned flags,
 296                          double depth,
 297                          unsigned stencil,
 298                          unsigned dst_x, unsigned dst_y,
 299                          unsigned width, unsigned height,
 300                          bool render_condition_enabled)
 301 {
 302    struct iris_context *ice = (void *) ctx;
 303    struct pipe_box box = {
 304       .x = dst_x,
 305       .y = dst_y,
 306       .z = psurf->u.tex.first_layer,
 307       .width = width,
 308       .height = height,
 309       .depth = psurf->u.tex.last_layer - psurf->u.tex.first_layer + 1
 310    };
 311
 312    assert(util_format_is_depth_or_stencil(psurf->texture->format));
 313
 314    clear_depth_stencil(ice, psurf->texture, psurf->u.tex.level, &box, true,
 315                        flags & PIPE_CLEAR_DEPTH, flags & PIPE_CLEAR_STENCIL,
 316                        depth, stencil);
 317 }
 318
 319 void
 320 iris_init_clear_functions(struct pipe_context *ctx)
 321 {
 322    ctx->clear = iris_clear;
 323    ctx->clear_texture = iris_clear_texture;
 324    ctx->clear_render_target = iris_clear_render_target;
 325    ctx->clear_depth_stencil = iris_clear_depth_stencil;
 326 }