src/gallium/drivers/vc4/vc4_blit.c

   1 /*
   2  * Copyright © 2015 Broadcom
   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
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include "util/u_format.h"
  25 #include "util/u_surface.h"
  26 #include "util/u_blitter.h"
  27 #include "vc4_context.h"
  28
  29 static struct pipe_surface *
  30 vc4_get_blit_surface(struct pipe_context *pctx,
  31                      struct pipe_resource *prsc, unsigned level)
  32 {
  33         struct pipe_surface tmpl;
  34
  35         memset(&tmpl, 0, sizeof(tmpl));
  36         tmpl.format = prsc->format;
  37         tmpl.u.tex.level = level;
  38         tmpl.u.tex.first_layer = 0;
  39         tmpl.u.tex.last_layer = 0;
  40
  41         return pctx->create_surface(pctx, prsc, &tmpl);
  42 }
  43
  44 static bool
  45 is_tile_unaligned(unsigned size, unsigned tile_size)
  46 {
  47         return size & (tile_size - 1);
  48 }
  49
  50 static bool
  51 vc4_tile_blit(struct pipe_context *pctx, const struct pipe_blit_info *info)
  52 {
  53         struct vc4_context *vc4 = vc4_context(pctx);
  54         bool old_msaa = vc4->msaa;
  55         int old_tile_width = vc4->tile_width;
  56         int old_tile_height = vc4->tile_height;
  57         bool msaa = (info->src.resource->nr_samples > 1 ||
  58                      info->dst.resource->nr_samples > 1);
  59         int tile_width = msaa ? 32 : 64;
  60         int tile_height = msaa ? 32 : 64;
  61
  62         if (util_format_is_depth_or_stencil(info->dst.resource->format))
  63                 return false;
  64
  65         if (info->scissor_enable)
  66                 return false;
  67
  68         if ((info->mask & PIPE_MASK_RGBA) == 0)
  69                 return false;
  70
  71         if (info->dst.box.x != info->src.box.x ||
  72             info->dst.box.y != info->src.box.y ||
  73             info->dst.box.width != info->src.box.width ||
  74             info->dst.box.height != info->src.box.height) {
  75                 return false;
  76         }
  77
  78         int dst_surface_width = u_minify(info->dst.resource->width0,
  79                                          info->dst.level);
  80         int dst_surface_height = u_minify(info->dst.resource->height0,
  81                                          info->dst.level);
  82         if (is_tile_unaligned(info->dst.box.x, tile_width) ||
  83             is_tile_unaligned(info->dst.box.y, tile_height) ||
  84             (is_tile_unaligned(info->dst.box.width, tile_width) &&
  85              info->dst.box.x + info->dst.box.width != dst_surface_width) ||
  86             (is_tile_unaligned(info->dst.box.height, tile_height) &&
  87              info->dst.box.y + info->dst.box.height != dst_surface_height)) {
  88                 return false;
  89         }
  90
  91         if (info->dst.resource->format != info->src.resource->format)
  92                 return false;
  93
  94         vc4_flush(pctx);
  95
  96         if (false) {
  97                 fprintf(stderr, "RCL blit from %d,%d to %d,%d (%d,%d)\n",
  98                         info->src.box.x,
  99                         info->src.box.y,
 100                         info->dst.box.x,
 101                         info->dst.box.y,
 102                         info->dst.box.width,
 103                         info->dst.box.height);
 104         }
 105
 106         struct pipe_surface *dst_surf =
 107                 vc4_get_blit_surface(pctx, info->dst.resource, info->dst.level);
 108         struct pipe_surface *src_surf =
 109                 vc4_get_blit_surface(pctx, info->src.resource, info->src.level);
 110
 111         pipe_surface_reference(&vc4->color_read, src_surf);
 112         pipe_surface_reference(&vc4->color_write,
 113                                dst_surf->texture->nr_samples > 1 ?
 114                                NULL : dst_surf);
 115         pipe_surface_reference(&vc4->msaa_color_write,
 116                                dst_surf->texture->nr_samples > 1 ?
 117                                dst_surf : NULL);
 118         pipe_surface_reference(&vc4->zs_read, NULL);
 119         pipe_surface_reference(&vc4->zs_write, NULL);
 120         pipe_surface_reference(&vc4->msaa_zs_write, NULL);
 121
 122         vc4->draw_min_x = info->dst.box.x;
 123         vc4->draw_min_y = info->dst.box.y;
 124         vc4->draw_max_x = info->dst.box.x + info->dst.box.width;
 125         vc4->draw_max_y = info->dst.box.y + info->dst.box.height;
 126         vc4->draw_width = dst_surf->width;
 127         vc4->draw_height = dst_surf->height;
 128
 129         vc4->tile_width = tile_width;
 130         vc4->tile_height = tile_height;
 131         vc4->msaa = msaa;
 132         vc4->needs_flush = true;
 133
 134         vc4_job_submit(vc4);
 135
 136         vc4->msaa = old_msaa;
 137         vc4->tile_width = old_tile_width;
 138         vc4->tile_height = old_tile_height;
 139
 140         pipe_surface_reference(&dst_surf, NULL);
 141         pipe_surface_reference(&src_surf, NULL);
 142
 143         return true;
 144 }
 145
 146 static bool
 147 vc4_render_blit(struct pipe_context *ctx, struct pipe_blit_info *info)
 148 {
 149         struct vc4_context *vc4 = vc4_context(ctx);
 150
 151         if (!util_blitter_is_blit_supported(vc4->blitter, info)) {
 152                 fprintf(stderr, "blit unsupported %s -> %s\n",
 153                     util_format_short_name(info->src.resource->format),
 154                     util_format_short_name(info->dst.resource->format));
 155                 return false;
 156         }
 157
 158         util_blitter_save_vertex_buffer_slot(vc4->blitter, vc4->vertexbuf.vb);
 159         util_blitter_save_vertex_elements(vc4->blitter, vc4->vtx);
 160         util_blitter_save_vertex_shader(vc4->blitter, vc4->prog.bind_vs);
 161         util_blitter_save_rasterizer(vc4->blitter, vc4->rasterizer);
 162         util_blitter_save_viewport(vc4->blitter, &vc4->viewport);
 163         util_blitter_save_scissor(vc4->blitter, &vc4->scissor);
 164         util_blitter_save_fragment_shader(vc4->blitter, vc4->prog.bind_fs);
 165         util_blitter_save_blend(vc4->blitter, vc4->blend);
 166         util_blitter_save_depth_stencil_alpha(vc4->blitter, vc4->zsa);
 167         util_blitter_save_stencil_ref(vc4->blitter, &vc4->stencil_ref);
 168         util_blitter_save_sample_mask(vc4->blitter, vc4->sample_mask);
 169         util_blitter_save_framebuffer(vc4->blitter, &vc4->framebuffer);
 170         util_blitter_save_fragment_sampler_states(vc4->blitter,
 171                         vc4->fragtex.num_samplers,
 172                         (void **)vc4->fragtex.samplers);
 173         util_blitter_save_fragment_sampler_views(vc4->blitter,
 174                         vc4->fragtex.num_textures, vc4->fragtex.textures);
 175
 176         util_blitter_blit(vc4->blitter, info);
 177
 178         return true;
 179 }
 180
 181 /* Optimal hardware path for blitting pixels.
 182  * Scaling, format conversion, up- and downsampling (resolve) are allowed.
 183  */
 184 void
 185 vc4_blit(struct pipe_context *pctx, const struct pipe_blit_info *blit_info)
 186 {
 187         struct pipe_blit_info info = *blit_info;
 188
 189         if (vc4_tile_blit(pctx, blit_info))
 190                 return;
 191
 192         if (util_try_blit_via_copy_region(pctx, &info)) {
 193                 return; /* done */
 194         }
 195
 196         if (info.mask & PIPE_MASK_S) {
 197                 fprintf(stderr, "cannot blit stencil, skipping\n");
 198                 info.mask &= ~PIPE_MASK_S;
 199         }
 200
 201         vc4_render_blit(pctx, &info);
 202 }