src/gallium/drivers/ilo/ilo_blit.c

   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_surface.h"
  29
  30 #include "ilo_blitter.h"
  31 #include "ilo_context.h"
  32 #include "ilo_blit.h"
  33
  34 static void
  35 ilo_resource_copy_region(struct pipe_context *pipe,
  36                          struct pipe_resource *dst,
  37                          unsigned dst_level,
  38                          unsigned dstx, unsigned dsty, unsigned dstz,
  39                          struct pipe_resource *src,
  40                          unsigned src_level,
  41                          const struct pipe_box *src_box)
  42 {
  43    struct ilo_context *ilo = ilo_context(pipe);
  44
  45    if (ilo_blitter_blt_copy_resource(ilo->blitter,
  46             dst, dst_level, dstx, dsty, dstz,
  47             src, src_level, src_box))
  48       return;
  49
  50    if (ilo_blitter_pipe_copy_resource(ilo->blitter,
  51             dst, dst_level, dstx, dsty, dstz,
  52             src, src_level, src_box))
  53       return;
  54
  55    util_resource_copy_region(&ilo->base, dst, dst_level,
  56          dstx, dsty, dstz, src, src_level, src_box);
  57 }
  58
  59 static void
  60 ilo_clear(struct pipe_context *pipe,
  61           unsigned buffers,
  62           const union pipe_color_union *color,
  63           double depth,
  64           unsigned stencil)
  65 {
  66    struct ilo_context *ilo = ilo_context(pipe);
  67
  68    ilo_blitter_pipe_clear_fb(ilo->blitter, buffers, color, depth, stencil);
  69 }
  70
  71 static void
  72 ilo_clear_render_target(struct pipe_context *pipe,
  73                         struct pipe_surface *dst,
  74                         const union pipe_color_union *color,
  75                         unsigned dstx, unsigned dsty,
  76                         unsigned width, unsigned height)
  77 {
  78    struct ilo_context *ilo = ilo_context(pipe);
  79
  80    if (!width || !height || dstx >= dst->width || dsty >= dst->height)
  81       return;
  82
  83    if (dstx + width > dst->width)
  84       width = dst->width - dstx;
  85    if (dsty + height > dst->height)
  86       height = dst->height - dsty;
  87
  88    if (ilo_blitter_blt_clear_rt(ilo->blitter,
  89             dst, color, dstx, dsty, width, height))
  90       return;
  91
  92    ilo_blitter_pipe_clear_rt(ilo->blitter,
  93          dst, color, dstx, dsty, width, height);
  94 }
  95
  96 static void
  97 ilo_clear_depth_stencil(struct pipe_context *pipe,
  98                         struct pipe_surface *dst,
  99                         unsigned clear_flags,
 100                         double depth,
 101                         unsigned stencil,
 102                         unsigned dstx, unsigned dsty,
 103                         unsigned width, unsigned height)
 104 {
 105    struct ilo_context *ilo = ilo_context(pipe);
 106
 107    if (!width || !height || dstx >= dst->width || dsty >= dst->height)
 108       return;
 109
 110    if (dstx + width > dst->width)
 111       width = dst->width - dstx;
 112    if (dsty + height > dst->height)
 113       height = dst->height - dsty;
 114
 115    if (ilo_blitter_blt_clear_zs(ilo->blitter,
 116             dst, clear_flags, depth, stencil, dstx, dsty, width, height))
 117       return;
 118
 119    ilo_blitter_pipe_clear_zs(ilo->blitter,
 120          dst, clear_flags, depth, stencil, dstx, dsty, width, height);
 121 }
 122
 123 static void
 124 ilo_blit(struct pipe_context *pipe, const struct pipe_blit_info *info)
 125 {
 126    struct ilo_context *ilo = ilo_context(pipe);
 127
 128    ilo_blitter_pipe_blit(ilo->blitter, info);
 129 }
 130
 131 static void
 132 ilo_flush_resource(struct pipe_context *pipe, struct pipe_resource *res)
 133 {
 134    struct ilo_context *ilo = ilo_context(pipe);
 135    const unsigned flags = ILO_TEXTURE_CPU_READ |
 136                           ILO_TEXTURE_BLT_READ |
 137                           ILO_TEXTURE_RENDER_READ;
 138
 139    ilo_blit_resolve_resource(ilo, res, flags);
 140 }
 141
 142 void
 143 ilo_blit_resolve_slices_for_hiz(struct ilo_context *ilo,
 144                                 struct pipe_resource *res, unsigned level,
 145                                 unsigned first_slice, unsigned num_slices,
 146                                 unsigned flags)
 147 {
 148    struct ilo_texture *tex = ilo_texture(res);
 149    const unsigned any_reader =
 150       ILO_TEXTURE_RENDER_READ |
 151       ILO_TEXTURE_BLT_READ |
 152       ILO_TEXTURE_CPU_READ;
 153    const unsigned other_writers =
 154       ILO_TEXTURE_BLT_WRITE |
 155       ILO_TEXTURE_CPU_WRITE;
 156    unsigned i;
 157
 158    assert(tex->base.target != PIPE_BUFFER &&
 159           ilo_texture_can_enable_hiz(tex, level, first_slice, num_slices));
 160
 161    if (flags & ILO_TEXTURE_RENDER_WRITE) {
 162       /*
 163        * When ILO_TEXTURE_RENDER_WRITE is set, there can be no reader.  We
 164        * need to perform a HiZ Buffer Resolve in case the resource was
 165        * previously written by another writer, unless this is a clear.
 166        */
 167       assert(!(flags & (other_writers | any_reader)));
 168
 169       if (!(flags & ILO_TEXTURE_CLEAR)) {
 170          for (i = 0; i < num_slices; i++) {
 171             const struct ilo_texture_slice *slice =
 172                ilo_texture_get_slice(tex, level, first_slice + i);
 173
 174             if (slice->flags & other_writers) {
 175                ilo_blitter_rectlist_resolve_hiz(ilo->blitter,
 176                      res, level, first_slice + i);
 177             }
 178          }
 179       }
 180    }
 181    else if ((flags & any_reader) ||
 182          ((flags & other_writers) && !(flags & ILO_TEXTURE_CLEAR))) {
 183       /*
 184        * When there is at least a reader or writer, we need to perform a
 185        * Depth Buffer Resolve in case the resource was previously written
 186        * by ILO_TEXTURE_RENDER_WRITE.
 187        */
 188       for (i = 0; i < num_slices; i++) {
 189          const struct ilo_texture_slice *slice =
 190             ilo_texture_get_slice(tex, level, first_slice + i);
 191
 192          if (slice->flags & ILO_TEXTURE_RENDER_WRITE) {
 193             ilo_blitter_rectlist_resolve_z(ilo->blitter,
 194                   &tex->base, level, first_slice + i);
 195          }
 196       }
 197    }
 198 }
 199
 200 /**
 201  * Initialize blit-related functions.
 202  */
 203 void
 204 ilo_init_blit_functions(struct ilo_context *ilo)
 205 {
 206    ilo->base.resource_copy_region = ilo_resource_copy_region;
 207    ilo->base.blit = ilo_blit;
 208    ilo->base.flush_resource = ilo_flush_resource;
 209
 210    ilo->base.clear = ilo_clear;
 211    ilo->base.clear_render_target = ilo_clear_render_target;
 212    ilo->base.clear_depth_stencil = ilo_clear_depth_stencil;
 213 }