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         int tile_width = 64;
  55         int tile_height = 64;
  56
  57         if (util_format_is_depth_or_stencil(info->dst.resource->format))
  58                 return false;
  59
  60         if (info->scissor_enable)
  61                 return false;
  62
  63         if ((info->mask & PIPE_MASK_RGBA) == 0)
  64                 return false;
  65
  66         if (info->dst.box.x != info->src.box.x ||
  67             info->dst.box.y != info->src.box.y ||
  68             info->dst.box.width != info->src.box.width ||
  69             info->dst.box.height != info->src.box.height) {
  70                 return false;
  71         }
  72
  73         if (is_tile_unaligned(info->dst.box.x, tile_width) ||
  74             is_tile_unaligned(info->dst.box.y, tile_height) ||
  75             is_tile_unaligned(info->dst.box.width, tile_width) ||
  76             is_tile_unaligned(info->dst.box.height, tile_height)) {
  77                 return false;
  78         }
  79
  80         if (info->dst.resource->format != info->src.resource->format)
  81                 return false;
  82
  83         vc4_flush(pctx);
  84
  85         struct pipe_surface *dst_surf =
  86                 vc4_get_blit_surface(pctx, info->dst.resource, info->dst.level);
  87         struct pipe_surface *src_surf =
  88                 vc4_get_blit_surface(pctx, info->src.resource, info->src.level);
  89
  90         pipe_surface_reference(&vc4->color_read, src_surf);
  91         pipe_surface_reference(&vc4->color_write, dst_surf);
  92         pipe_surface_reference(&vc4->zs_read, NULL);
  93         pipe_surface_reference(&vc4->zs_write, NULL);
  94         vc4->draw_min_x = info->dst.box.x;
  95         vc4->draw_min_y = info->dst.box.y;
  96         vc4->draw_max_x = info->dst.box.x + info->dst.box.width;
  97         vc4->draw_max_y = info->dst.box.y + info->dst.box.height;
  98         vc4->draw_width = dst_surf->width;
  99         vc4->draw_height = dst_surf->height;
 100
 101         vc4->needs_flush = true;
 102         vc4_job_submit(vc4);
 103
 104         pipe_surface_reference(&dst_surf, NULL);
 105         pipe_surface_reference(&src_surf, NULL);
 106
 107         return true;
 108 }
 109
 110 static bool
 111 vc4_render_blit(struct pipe_context *ctx, struct pipe_blit_info *info)
 112 {
 113         struct vc4_context *vc4 = vc4_context(ctx);
 114
 115         if (!util_blitter_is_blit_supported(vc4->blitter, info)) {
 116                 fprintf(stderr, "blit unsupported %s -> %s\n",
 117                     util_format_short_name(info->src.resource->format),
 118                     util_format_short_name(info->dst.resource->format));
 119                 return false;
 120         }
 121
 122         util_blitter_save_vertex_buffer_slot(vc4->blitter, vc4->vertexbuf.vb);
 123         util_blitter_save_vertex_elements(vc4->blitter, vc4->vtx);
 124         util_blitter_save_vertex_shader(vc4->blitter, vc4->prog.bind_vs);
 125         util_blitter_save_rasterizer(vc4->blitter, vc4->rasterizer);
 126         util_blitter_save_viewport(vc4->blitter, &vc4->viewport);
 127         util_blitter_save_scissor(vc4->blitter, &vc4->scissor);
 128         util_blitter_save_fragment_shader(vc4->blitter, vc4->prog.bind_fs);
 129         util_blitter_save_blend(vc4->blitter, vc4->blend);
 130         util_blitter_save_depth_stencil_alpha(vc4->blitter, vc4->zsa);
 131         util_blitter_save_stencil_ref(vc4->blitter, &vc4->stencil_ref);
 132         util_blitter_save_sample_mask(vc4->blitter, vc4->sample_mask);
 133         util_blitter_save_framebuffer(vc4->blitter, &vc4->framebuffer);
 134         util_blitter_save_fragment_sampler_states(vc4->blitter,
 135                         vc4->fragtex.num_samplers,
 136                         (void **)vc4->fragtex.samplers);
 137         util_blitter_save_fragment_sampler_views(vc4->blitter,
 138                         vc4->fragtex.num_textures, vc4->fragtex.textures);
 139
 140         util_blitter_blit(vc4->blitter, info);
 141
 142         return true;
 143 }
 144
 145 /* Optimal hardware path for blitting pixels.
 146  * Scaling, format conversion, up- and downsampling (resolve) are allowed.
 147  */
 148 void
 149 vc4_blit(struct pipe_context *pctx, const struct pipe_blit_info *blit_info)
 150 {
 151         struct pipe_blit_info info = *blit_info;
 152
 153         if (info.src.resource->nr_samples > 1 &&
 154             info.dst.resource->nr_samples <= 1 &&
 155             !util_format_is_depth_or_stencil(info.src.resource->format) &&
 156             !util_format_is_pure_integer(info.src.resource->format)) {
 157                 fprintf(stderr, "color resolve unimplemented\n");
 158                 return;
 159         }
 160
 161         if (vc4_tile_blit(pctx, blit_info))
 162                 return;
 163
 164         if (util_try_blit_via_copy_region(pctx, &info)) {
 165                 return; /* done */
 166         }
 167
 168         if (info.mask & PIPE_MASK_S) {
 169                 fprintf(stderr, "cannot blit stencil, skipping\n");
 170                 info.mask &= ~PIPE_MASK_S;
 171         }
 172
 173         vc4_render_blit(pctx, &info);
 174 }