src/gallium/drivers/freedreno/freedreno_blitter.c

   1 /*
   2  * Copyright (C) 2017 Rob Clark <robclark@freedesktop.org>
   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 FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Rob Clark <robclark@freedesktop.org>
  25  */
  26
  27 #include "util/u_blitter.h"
  28 #include "util/u_surface.h"
  29
  30 #include "freedreno_blitter.h"
  31 #include "freedreno_context.h"
  32 #include "freedreno_resource.h"
  33
  34 /* generic blit using u_blitter.. slightly modified version of util_blitter_blit
  35  * which also handles PIPE_BUFFER:
  36  */
  37
  38 static void
  39 default_dst_texture(struct pipe_surface *dst_templ, struct pipe_resource *dst,
  40                 unsigned dstlevel, unsigned dstz)
  41 {
  42         memset(dst_templ, 0, sizeof(*dst_templ));
  43         if (dst->target == PIPE_BUFFER)
  44                 dst_templ->format = PIPE_FORMAT_R8_UINT;
  45         else
  46                 dst_templ->format = util_format_linear(dst->format);
  47         dst_templ->u.tex.level = dstlevel;
  48         dst_templ->u.tex.first_layer = dstz;
  49         dst_templ->u.tex.last_layer = dstz;
  50 }
  51
  52 static void
  53 default_src_texture(struct pipe_sampler_view *src_templ,
  54                 struct pipe_resource *src, unsigned srclevel)
  55 {
  56         bool cube_as_2darray = src->screen->get_param(src->screen,
  57                         PIPE_CAP_SAMPLER_VIEW_TARGET);
  58
  59         memset(src_templ, 0, sizeof(*src_templ));
  60
  61         if (cube_as_2darray && (src->target == PIPE_TEXTURE_CUBE ||
  62                         src->target == PIPE_TEXTURE_CUBE_ARRAY))
  63                 src_templ->target = PIPE_TEXTURE_2D_ARRAY;
  64         else
  65                 src_templ->target = src->target;
  66
  67         if (src->target  == PIPE_BUFFER) {
  68                 src_templ->target = PIPE_TEXTURE_1D;
  69                 src_templ->format = PIPE_FORMAT_R8_UINT;
  70         } else {
  71                 src_templ->format = util_format_linear(src->format);
  72         }
  73         src_templ->u.tex.first_level = srclevel;
  74         src_templ->u.tex.last_level = srclevel;
  75         src_templ->u.tex.first_layer = 0;
  76         src_templ->u.tex.last_layer =
  77                         src->target == PIPE_TEXTURE_3D ? u_minify(src->depth0, srclevel) - 1
  78                                         : (unsigned)(src->array_size - 1);
  79         src_templ->swizzle_r = PIPE_SWIZZLE_X;
  80         src_templ->swizzle_g = PIPE_SWIZZLE_Y;
  81         src_templ->swizzle_b = PIPE_SWIZZLE_Z;
  82         src_templ->swizzle_a = PIPE_SWIZZLE_W;
  83 }
  84
  85 bool
  86 fd_blitter_blit(struct fd_context *ctx, const struct pipe_blit_info *info)
  87 {
  88         struct pipe_resource *dst = info->dst.resource;
  89         struct pipe_resource *src = info->src.resource;
  90         struct pipe_context *pipe = &ctx->base;
  91         struct pipe_surface *dst_view, dst_templ;
  92         struct pipe_sampler_view src_templ, *src_view;
  93         bool discard = false;
  94
  95         if (!info->scissor_enable && !info->alpha_blend) {
  96                 discard = util_texrange_covers_whole_level(info->dst.resource,
  97                                 info->dst.level, info->dst.box.x, info->dst.box.y,
  98                                 info->dst.box.z, info->dst.box.width,
  99                                 info->dst.box.height, info->dst.box.depth);
 100         }
 101
 102         fd_blitter_pipe_begin(ctx, info->render_condition_enable, discard, FD_STAGE_BLIT);
 103
 104         /* Initialize the surface. */
 105         default_dst_texture(&dst_templ, dst, info->dst.level,
 106                         info->dst.box.z);
 107         dst_templ.format = info->dst.format;
 108         dst_view = pipe->create_surface(pipe, dst, &dst_templ);
 109
 110         /* Initialize the sampler view. */
 111         default_src_texture(&src_templ, src, info->src.level);
 112         src_templ.format = info->src.format;
 113         src_view = pipe->create_sampler_view(pipe, src, &src_templ);
 114
 115         /* Copy. */
 116         util_blitter_blit_generic(ctx->blitter, dst_view, &info->dst.box,
 117                         src_view, &info->src.box, src->width0, src->height0,
 118                         info->mask, info->filter,
 119                         info->scissor_enable ? &info->scissor : NULL,
 120                         info->alpha_blend);
 121
 122         pipe_surface_reference(&dst_view, NULL);
 123         pipe_sampler_view_reference(&src_view, NULL);
 124
 125         fd_blitter_pipe_end(ctx);
 126
 127         /* The fallback blitter must never fail: */
 128         return true;
 129 }
 130
 131 /**
 132  * _copy_region using pipe (3d engine)
 133  */
 134 static bool
 135 fd_blitter_pipe_copy_region(struct fd_context *ctx,
 136                 struct pipe_resource *dst,
 137                 unsigned dst_level,
 138                 unsigned dstx, unsigned dsty, unsigned dstz,
 139                 struct pipe_resource *src,
 140                 unsigned src_level,
 141                 const struct pipe_box *src_box)
 142 {
 143         /* not until we allow rendertargets to be buffers */
 144         if (dst->target == PIPE_BUFFER || src->target == PIPE_BUFFER)
 145                 return false;
 146
 147         if (!util_blitter_is_copy_supported(ctx->blitter, dst, src))
 148                 return false;
 149
 150         /* TODO we could discard if dst box covers dst level fully.. */
 151         fd_blitter_pipe_begin(ctx, false, false, FD_STAGE_BLIT);
 152         util_blitter_copy_texture(ctx->blitter,
 153                         dst, dst_level, dstx, dsty, dstz,
 154                         src, src_level, src_box);
 155         fd_blitter_pipe_end(ctx);
 156
 157         return true;
 158 }
 159
 160 /**
 161  * Copy a block of pixels from one resource to another.
 162  * The resource must be of the same format.
 163  */
 164 void
 165 fd_resource_copy_region(struct pipe_context *pctx,
 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 fd_context *ctx = fd_context(pctx);
 174
 175         if (ctx->blit) {
 176                 struct pipe_blit_info info;
 177
 178                 memset(&info, 0, sizeof info);
 179                 info.dst.resource = dst;
 180                 info.dst.level = dst_level;
 181                 info.dst.box.x = dstx;
 182                 info.dst.box.y = dsty;
 183                 info.dst.box.z = dstz;
 184                 info.dst.box.width = src_box->width;
 185                 info.dst.box.height = src_box->height;
 186                 assert(info.dst.box.width >= 0);
 187                 assert(info.dst.box.height >= 0);
 188                 info.dst.box.depth = 1;
 189                 info.dst.format = dst->format;
 190                 info.src.resource = src;
 191                 info.src.level = src_level;
 192                 info.src.box = *src_box;
 193                 info.src.format = src->format;
 194                 info.mask = util_format_get_mask(src->format);
 195                 info.filter = PIPE_TEX_FILTER_NEAREST;
 196                 info.scissor_enable = 0;
 197
 198                 if (ctx->blit(ctx, &info))
 199                         return;
 200         }
 201
 202         /* TODO if we have 2d core, or other DMA engine that could be used
 203          * for simple copies and reasonably easily synchronized with the 3d
 204          * core, this is where we'd plug it in..
 205          */
 206
 207         /* try blit on 3d pipe: */
 208         if (fd_blitter_pipe_copy_region(ctx,
 209                         dst, dst_level, dstx, dsty, dstz,
 210                         src, src_level, src_box))
 211                 return;
 212
 213         /* else fallback to pure sw: */
 214         util_resource_copy_region(pctx,
 215                         dst, dst_level, dstx, dsty, dstz,
 216                         src, src_level, src_box);
 217 }