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 vc4_tile_blit(struct pipe_context *pctx, const struct pipe_blit_info *info)
  46 {
  47         struct vc4_context *vc4 = vc4_context(pctx);
  48
  49         if (util_format_is_depth_or_stencil(info->dst.resource->format))
  50                 return false;
  51
  52         if ((info->mask & PIPE_MASK_RGBA) == 0)
  53                 return false;
  54
  55         if (info->dst.box.x != 0 || info->dst.box.y != 0 ||
  56             info->src.box.x != 0 || info->src.box.y != 0 ||
  57             info->dst.box.width != info->src.box.width ||
  58             info->dst.box.height != info->src.box.height) {
  59                 return false;
  60         }
  61
  62         if (info->dst.resource->format != info->src.resource->format)
  63                 return false;
  64
  65         vc4_flush(pctx);
  66
  67         struct pipe_surface *dst_surf =
  68                 vc4_get_blit_surface(pctx, info->dst.resource, info->dst.level);
  69         struct pipe_surface *src_surf =
  70                 vc4_get_blit_surface(pctx, info->src.resource, info->src.level);
  71
  72         pipe_surface_reference(&vc4->color_read, src_surf);
  73         pipe_surface_reference(&vc4->color_write, dst_surf);
  74         pipe_surface_reference(&vc4->zs_read, NULL);
  75         pipe_surface_reference(&vc4->zs_write, NULL);
  76         vc4->draw_min_x = 0;
  77         vc4->draw_min_y = 0;
  78         vc4->draw_max_x = dst_surf->width;
  79         vc4->draw_max_y = dst_surf->height;
  80         vc4->draw_width = dst_surf->width;
  81         vc4->draw_height = dst_surf->height;
  82         vc4->needs_flush = true;
  83         vc4_job_submit(vc4);
  84
  85         pipe_surface_reference(&dst_surf, NULL);
  86         pipe_surface_reference(&src_surf, NULL);
  87
  88         return true;
  89 }
  90
  91 static bool
  92 vc4_render_blit(struct pipe_context *ctx, struct pipe_blit_info *info)
  93 {
  94         struct vc4_context *vc4 = vc4_context(ctx);
  95
  96         if (!util_blitter_is_blit_supported(vc4->blitter, info)) {
  97                 fprintf(stderr, "blit unsupported %s -> %s\n",
  98                     util_format_short_name(info->src.resource->format),
  99                     util_format_short_name(info->dst.resource->format));
 100                 return false;
 101         }
 102
 103         util_blitter_save_vertex_buffer_slot(vc4->blitter, vc4->vertexbuf.vb);
 104         util_blitter_save_vertex_elements(vc4->blitter, vc4->vtx);
 105         util_blitter_save_vertex_shader(vc4->blitter, vc4->prog.bind_vs);
 106         util_blitter_save_rasterizer(vc4->blitter, vc4->rasterizer);
 107         util_blitter_save_viewport(vc4->blitter, &vc4->viewport);
 108         util_blitter_save_scissor(vc4->blitter, &vc4->scissor);
 109         util_blitter_save_fragment_shader(vc4->blitter, vc4->prog.bind_fs);
 110         util_blitter_save_blend(vc4->blitter, vc4->blend);
 111         util_blitter_save_depth_stencil_alpha(vc4->blitter, vc4->zsa);
 112         util_blitter_save_stencil_ref(vc4->blitter, &vc4->stencil_ref);
 113         util_blitter_save_sample_mask(vc4->blitter, vc4->sample_mask);
 114         util_blitter_save_framebuffer(vc4->blitter, &vc4->framebuffer);
 115         util_blitter_save_fragment_sampler_states(vc4->blitter,
 116                         vc4->fragtex.num_samplers,
 117                         (void **)vc4->fragtex.samplers);
 118         util_blitter_save_fragment_sampler_views(vc4->blitter,
 119                         vc4->fragtex.num_textures, vc4->fragtex.textures);
 120
 121         util_blitter_blit(vc4->blitter, info);
 122
 123         return true;
 124 }
 125
 126 /* Optimal hardware path for blitting pixels.
 127  * Scaling, format conversion, up- and downsampling (resolve) are allowed.
 128  */
 129 void
 130 vc4_blit(struct pipe_context *pctx, const struct pipe_blit_info *blit_info)
 131 {
 132         struct pipe_blit_info info = *blit_info;
 133
 134         if (info.src.resource->nr_samples > 1 &&
 135             info.dst.resource->nr_samples <= 1 &&
 136             !util_format_is_depth_or_stencil(info.src.resource->format) &&
 137             !util_format_is_pure_integer(info.src.resource->format)) {
 138                 fprintf(stderr, "color resolve unimplemented\n");
 139                 return;
 140         }
 141
 142         if (vc4_tile_blit(pctx, blit_info))
 143                 return;
 144
 145         if (util_try_blit_via_copy_region(pctx, &info)) {
 146                 return; /* done */
 147         }
 148
 149         if (info.mask & PIPE_MASK_S) {
 150                 fprintf(stderr, "cannot blit stencil, skipping\n");
 151                 info.mask &= ~PIPE_MASK_S;
 152         }
 153
 154         vc4_render_blit(pctx, &info);
 155 }