src/gallium/drivers/iris/iris_blit.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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23 #include <stdio.h>
  24 #include "pipe/p_defines.h"
  25 #include "pipe/p_state.h"
  26 #include "pipe/p_context.h"
  27 #include "pipe/p_screen.h"
  28 #include "util/u_format.h"
  29 #include "util/u_inlines.h"
  30 #include "util/ralloc.h"
  31 #include "intel/blorp/blorp.h"
  32 #include "iris_context.h"
  33 #include "iris_resource.h"
  34 #include "iris_screen.h"
  35
  36 void
  37 iris_blorp_surf_for_resource(struct blorp_surf *surf,
  38                              struct pipe_resource *p_res,
  39                              enum isl_aux_usage aux_usage,
  40                              bool is_render_target)
  41 {
  42    struct iris_resource *res = (void *) p_res;
  43
  44    *surf = (struct blorp_surf) {
  45       .surf = &res->surf,
  46       .addr = (struct blorp_address) {
  47          .buffer = res->bo,
  48          .offset = 0, // XXX: ???
  49          .reloc_flags = is_render_target ? EXEC_OBJECT_WRITE : 0,
  50          .mocs = I915_MOCS_CACHED, // XXX: BDW MOCS, PTE MOCS
  51       },
  52       .aux_usage = aux_usage,
  53    };
  54
  55    assert(surf->aux_usage == ISL_AUX_USAGE_NONE);
  56 }
  57
  58 static enum isl_format
  59 iris_get_blorp_format(enum pipe_format pf)
  60 {
  61    switch (pf) {
  62    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
  63       return ISL_FORMAT_R24_UNORM_X8_TYPELESS;
  64    case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
  65       return ISL_FORMAT_R32_FLOAT;
  66    default:
  67       return iris_isl_format_for_pipe_format(pf);
  68    }
  69 }
  70
  71 static void
  72 iris_blit(struct pipe_context *ctx, const struct pipe_blit_info *info)
  73 {
  74    struct iris_context *ice = (void *) ctx;
  75    struct blorp_surf src_surf, dst_surf;
  76    iris_blorp_surf_for_resource(&src_surf, info->src.resource,
  77                                 ISL_AUX_USAGE_NONE, false);
  78    iris_blorp_surf_for_resource(&dst_surf, info->dst.resource,
  79                                 ISL_AUX_USAGE_NONE, true);
  80
  81    enum isl_format src_isl_format = iris_get_blorp_format(info->src.format);
  82    enum isl_format dst_isl_format = iris_get_blorp_format(info->dst.format);
  83
  84    unsigned dst_layer = info->dst.box.z;
  85    unsigned src_layer = info->src.box.z;
  86
  87    struct isl_swizzle src_isl_swizzle = ISL_SWIZZLE_IDENTITY;
  88
  89    int src_x0 = info->src.box.x;
  90    int src_x1 = info->src.box.x + info->src.box.width;
  91    int src_y0 = info->src.box.y;
  92    int src_y1 = info->src.box.y + info->src.box.height;
  93    int dst_x0 = info->dst.box.x;
  94    int dst_x1 = info->dst.box.x + info->dst.box.width;
  95    int dst_y0 = info->dst.box.y;
  96    int dst_y1 = info->dst.box.y + info->dst.box.height;
  97    bool mirror_x = false;
  98    bool mirror_y = false;
  99    enum blorp_filter filter;
 100
 101    if (info->dst.box.width == info->src.box.width &&
 102        info->dst.box.height == info->src.box.height) {
 103       if (src_surf.surf->samples > 1 && dst_surf.surf->samples <= 1) {
 104          /* The OpenGL ES 3.2 specification, section 16.2.1, says:
 105           *
 106           *    "If the read framebuffer is multisampled (its effective
 107           *     value of SAMPLE_BUFFERS is one) and the draw framebuffer
 108           *     is not (its value of SAMPLE_BUFFERS is zero), the samples
 109           *     corresponding to each pixel location in the source are
 110           *     converted to a single sample before being written to the
 111           *     destination.  The filter parameter is ignored.  If the
 112           *     source formats are integer types or stencil values, a
 113           *     single sample’s value is selected for each pixel.  If the
 114           *     source formats are floating-point or normalized types,
 115           *     the sample values for each pixel are resolved in an
 116           *     implementation-dependent manner.  If the source formats
 117           *     are depth values, sample values are resolved in an
 118           *     implementation-dependent manner where the result will be
 119           *     between the minimum and maximum depth values in the pixel."
 120           *
 121           * When selecting a single sample, we always choose sample 0.
 122           */
 123          if (util_format_is_depth_or_stencil(info->src.format) ||
 124              util_format_is_pure_integer(info->src.format)) {
 125             filter = BLORP_FILTER_SAMPLE_0;
 126          } else {
 127             filter = BLORP_FILTER_AVERAGE;
 128          }
 129       } else {
 130          /* The OpenGL 4.6 specification, section 18.3.1, says:
 131           *
 132           *    "If the source and destination dimensions are identical,
 133           *     no filtering is applied."
 134           *
 135           * Using BLORP_FILTER_NONE will also handle the upsample case by
 136           * replicating the one value in the source to all values in the
 137           * destination.
 138           */
 139          filter = BLORP_FILTER_NONE;
 140       }
 141    } else if (info->filter == PIPE_TEX_FILTER_LINEAR) {
 142       filter = BLORP_FILTER_BILINEAR;
 143    } else {
 144       filter = BLORP_FILTER_NEAREST;
 145    }
 146
 147    struct iris_batch *batch = &ice->render_batch;
 148
 149    iris_batch_maybe_flush(batch, 1500);
 150
 151    struct blorp_batch blorp_batch;
 152    blorp_batch_init(&ice->blorp, &blorp_batch, batch, 0);
 153    blorp_blit(&blorp_batch, &src_surf, info->src.level, src_layer,
 154               src_isl_format, src_isl_swizzle,
 155               &dst_surf, info->dst.level, dst_layer,
 156               dst_isl_format, ISL_SWIZZLE_IDENTITY,
 157               src_x0, src_y0, src_x1, src_y1,
 158               dst_x0, dst_y0, dst_x1, dst_y1,
 159               filter, mirror_x, mirror_y);
 160
 161    blorp_batch_finish(&blorp_batch);
 162 }
 163
 164 static void
 165 iris_resource_copy_region(struct pipe_context *ctx,
 166                           struct pipe_resource *dst,
 167                           unsigned dst_level,
 168                           unsigned dstx, unsigned dsty, unsigned dstz,
 169                           struct pipe_resource *src,
 170                           unsigned src_level,
 171                           const struct pipe_box *src_box)
 172 {
 173    struct iris_context *ice = (void *) ctx;
 174    struct blorp_surf src_surf, dst_surf;
 175    iris_blorp_surf_for_resource(&src_surf, src, ISL_AUX_USAGE_NONE, false);
 176    iris_blorp_surf_for_resource(&dst_surf, dst, ISL_AUX_USAGE_NONE, true);
 177
 178    // XXX: ???
 179    unsigned dst_layer = dstz;
 180    unsigned src_layer = src_box->z;
 181
 182    struct iris_batch *batch = &ice->render_batch;
 183
 184    iris_batch_maybe_flush(batch, 1500);
 185
 186    struct blorp_batch blorp_batch;
 187    blorp_batch_init(&ice->blorp, &blorp_batch, batch, 0);
 188    blorp_copy(&blorp_batch, &src_surf, src_level, src_layer,
 189               &dst_surf, dst_level, dst_layer,
 190               src_box->x, src_box->y, dstx, dsty,
 191               src_box->width, src_box->height);
 192    blorp_batch_finish(&blorp_batch);
 193 }
 194
 195 void
 196 iris_init_blit_functions(struct pipe_context *ctx)
 197 {
 198    ctx->blit = iris_blit;
 199    ctx->resource_copy_region = iris_resource_copy_region;
 200 }