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 /**
  72  * The pipe->blit() driver hook.
  73  *
  74  * This performs a blit between two surfaces, which copies data but may
  75  * also perform format conversion, scaling, flipping, and so on.
  76  */
  77 static void
  78 iris_blit(struct pipe_context *ctx, const struct pipe_blit_info *info)
  79 {
  80    struct iris_context *ice = (void *) ctx;
  81    struct blorp_surf src_surf, dst_surf;
  82    iris_blorp_surf_for_resource(&src_surf, info->src.resource,
  83                                 ISL_AUX_USAGE_NONE, false);
  84    iris_blorp_surf_for_resource(&dst_surf, info->dst.resource,
  85                                 ISL_AUX_USAGE_NONE, true);
  86
  87    enum isl_format src_isl_format = iris_get_blorp_format(info->src.format);
  88    enum isl_format dst_isl_format = iris_get_blorp_format(info->dst.format);
  89
  90    unsigned dst_layer = info->dst.box.z;
  91    unsigned src_layer = info->src.box.z;
  92
  93    struct isl_swizzle src_isl_swizzle = ISL_SWIZZLE_IDENTITY;
  94
  95    int src_x0 = info->src.box.x;
  96    int src_x1 = info->src.box.x + info->src.box.width;
  97    int src_y0 = info->src.box.y;
  98    int src_y1 = info->src.box.y + info->src.box.height;
  99    int dst_x0 = info->dst.box.x;
 100    int dst_x1 = info->dst.box.x + info->dst.box.width;
 101    int dst_y0 = info->dst.box.y;
 102    int dst_y1 = info->dst.box.y + info->dst.box.height;
 103    bool mirror_x = false;
 104    bool mirror_y = false;
 105    enum blorp_filter filter;
 106
 107    if (abs(info->dst.box.width) == abs(info->src.box.width) &&
 108        abs(info->dst.box.height) == abs(info->src.box.height)) {
 109       if (src_surf.surf->samples > 1 && dst_surf.surf->samples <= 1) {
 110          /* The OpenGL ES 3.2 specification, section 16.2.1, says:
 111           *
 112           *    "If the read framebuffer is multisampled (its effective
 113           *     value of SAMPLE_BUFFERS is one) and the draw framebuffer
 114           *     is not (its value of SAMPLE_BUFFERS is zero), the samples
 115           *     corresponding to each pixel location in the source are
 116           *     converted to a single sample before being written to the
 117           *     destination.  The filter parameter is ignored.  If the
 118           *     source formats are integer types or stencil values, a
 119           *     single sample’s value is selected for each pixel.  If the
 120           *     source formats are floating-point or normalized types,
 121           *     the sample values for each pixel are resolved in an
 122           *     implementation-dependent manner.  If the source formats
 123           *     are depth values, sample values are resolved in an
 124           *     implementation-dependent manner where the result will be
 125           *     between the minimum and maximum depth values in the pixel."
 126           *
 127           * When selecting a single sample, we always choose sample 0.
 128           */
 129          if (util_format_is_depth_or_stencil(info->src.format) ||
 130              util_format_is_pure_integer(info->src.format)) {
 131             filter = BLORP_FILTER_SAMPLE_0;
 132          } else {
 133             filter = BLORP_FILTER_AVERAGE;
 134          }
 135       } else {
 136          /* The OpenGL 4.6 specification, section 18.3.1, says:
 137           *
 138           *    "If the source and destination dimensions are identical,
 139           *     no filtering is applied."
 140           *
 141           * Using BLORP_FILTER_NONE will also handle the upsample case by
 142           * replicating the one value in the source to all values in the
 143           * destination.
 144           */
 145          filter = BLORP_FILTER_NONE;
 146       }
 147    } else if (info->filter == PIPE_TEX_FILTER_LINEAR) {
 148       filter = BLORP_FILTER_BILINEAR;
 149    } else {
 150       filter = BLORP_FILTER_NEAREST;
 151    }
 152
 153    struct iris_batch *batch = &ice->render_batch;
 154
 155    iris_batch_maybe_flush(batch, 1500);
 156
 157    struct blorp_batch blorp_batch;
 158    blorp_batch_init(&ice->blorp, &blorp_batch, batch, 0);
 159    blorp_blit(&blorp_batch, &src_surf, info->src.level, src_layer,
 160               src_isl_format, src_isl_swizzle,
 161               &dst_surf, info->dst.level, dst_layer,
 162               dst_isl_format, ISL_SWIZZLE_IDENTITY,
 163               src_x0, src_y0, src_x1, src_y1,
 164               dst_x0, dst_y0, dst_x1, dst_y1,
 165               filter, mirror_x, mirror_y);
 166
 167    blorp_batch_finish(&blorp_batch);
 168 }
 169
 170 /**
 171  * The pipe->resource_copy_region() driver hook.
 172  *
 173  * This implements ARB_copy_image semantics - a raw memory copy between
 174  * compatible view classes.
 175  */
 176 static void
 177 iris_resource_copy_region(struct pipe_context *ctx,
 178                           struct pipe_resource *dst,
 179                           unsigned dst_level,
 180                           unsigned dstx, unsigned dsty, unsigned dstz,
 181                           struct pipe_resource *src,
 182                           unsigned src_level,
 183                           const struct pipe_box *src_box)
 184 {
 185    struct iris_context *ice = (void *) ctx;
 186    struct blorp_surf src_surf, dst_surf;
 187    iris_blorp_surf_for_resource(&src_surf, src, ISL_AUX_USAGE_NONE, false);
 188    iris_blorp_surf_for_resource(&dst_surf, dst, ISL_AUX_USAGE_NONE, true);
 189
 190    // XXX: ???
 191    unsigned dst_layer = dstz;
 192    unsigned src_layer = src_box->z;
 193
 194    struct iris_batch *batch = &ice->render_batch;
 195
 196    iris_batch_maybe_flush(batch, 1500);
 197
 198    struct blorp_batch blorp_batch;
 199    blorp_batch_init(&ice->blorp, &blorp_batch, batch, 0);
 200    blorp_copy(&blorp_batch, &src_surf, src_level, src_layer,
 201               &dst_surf, dst_level, dst_layer,
 202               src_box->x, src_box->y, dstx, dsty,
 203               src_box->width, src_box->height);
 204    blorp_batch_finish(&blorp_batch);
 205 }
 206
 207 void
 208 iris_init_blit_functions(struct pipe_context *ctx)
 209 {
 210    ctx->blit = iris_blit;
 211    ctx->resource_copy_region = iris_resource_copy_region;
 212 }