src/gallium/drivers/panfrost/pan_blit.c

   1 /*
   2  * Copyright (C) 2014 Broadcom
   3  * Copyright (C) 2019 Collabora
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * 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 FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  * Authors (Collabora):
  25  *   Tomeu Vizoso <tomeu.vizoso@collabora.com>
  26  *   Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
  27  *
  28  */
  29
  30 #include "pan_context.h"
  31 #include "util/u_format.h"
  32
  33 static void
  34 panfrost_blitter_save(struct panfrost_context *ctx)
  35 {
  36
  37         util_blitter_save_vertex_buffer_slot(ctx->blitter, ctx->vertex_buffers);
  38         util_blitter_save_vertex_elements(ctx->blitter, ctx->vertex);
  39         util_blitter_save_vertex_shader(ctx->blitter, ctx->vs);
  40         util_blitter_save_rasterizer(ctx->blitter, ctx->rasterizer);
  41         util_blitter_save_viewport(ctx->blitter, &ctx->pipe_viewport);
  42         util_blitter_save_scissor(ctx->blitter, &ctx->scissor);
  43         util_blitter_save_fragment_shader(ctx->blitter, ctx->fs);
  44         util_blitter_save_blend(ctx->blitter, ctx->blend);
  45         util_blitter_save_depth_stencil_alpha(ctx->blitter, ctx->depth_stencil);
  46         util_blitter_save_stencil_ref(ctx->blitter, &ctx->stencil_ref);
  47         util_blitter_save_so_targets(ctx->blitter, 0, NULL);
  48
  49         /* For later */
  50 //        util_blitter_save_sample_mask(ctx->blitter, ctx->sample_mask);
  51
  52         util_blitter_save_framebuffer(ctx->blitter, &ctx->pipe_framebuffer);
  53         util_blitter_save_fragment_sampler_states(ctx->blitter,
  54                                                   ctx->sampler_count[PIPE_SHADER_FRAGMENT],
  55                                                   (void **)(&ctx->samplers[PIPE_SHADER_FRAGMENT]));
  56         util_blitter_save_fragment_sampler_views(ctx->blitter,
  57                                                  ctx->sampler_view_count[PIPE_SHADER_FRAGMENT],
  58                                                  (struct pipe_sampler_view **)&ctx->sampler_views[PIPE_SHADER_FRAGMENT]);
  59 }
  60
  61 static bool
  62 panfrost_u_blitter_blit(struct pipe_context *pipe,
  63               const struct pipe_blit_info *info)
  64 {
  65         struct panfrost_context *ctx = pan_context(pipe);
  66
  67         if (!util_blitter_is_blit_supported(ctx->blitter, info)) {
  68                 fprintf(stderr, "blit unsupported %s -> %s\n",
  69                 util_format_short_name(info->src.resource->format),
  70                 util_format_short_name(info->dst.resource->format));
  71                 return false;
  72         }
  73
  74         /* TODO: Scissor */
  75
  76         panfrost_blitter_save(ctx);
  77         util_blitter_blit(ctx->blitter, info);
  78
  79         return true;
  80 }
  81
  82 void
  83 panfrost_blit(struct pipe_context *pipe,
  84               const struct pipe_blit_info *info)
  85 {
  86         /* We don't have a hardware blit, so we just fake it with
  87          * u_blitter. We could do a little better by culling
  88          * vertex jobs, though. */
  89
  90         /* TODO: Implement blitting. Commented out because u_blitter is not
  91          * fully integrated and creates bugs in other places. */
  92 #if 0
  93         if (panfrost_u_blitter_blit(pipe, info))
  94                 return;
  95
  96         fprintf(stderr, "Unhandled blit");
  97 #endif
  98
  99         return;
 100 }
 101
 102 /* Blits a framebuffer to "itself". Mali is a tiler, so the
 103  * framebuffer is implicitly cleared every frame, so if there is
 104  * no actual glClear(), we have to blit it back ourselves.
 105  */
 106
 107 void
 108 panfrost_blit_wallpaper(struct panfrost_context *ctx)
 109 {
 110         struct pipe_blit_info binfo = { };
 111
 112         panfrost_blitter_save(ctx);
 113
 114         binfo.src.resource = binfo.dst.resource = ctx->pipe_framebuffer.cbufs[0]->texture;
 115         binfo.src.level = binfo.dst.level = 0;
 116         binfo.src.box.x = binfo.dst.box.x = 0;
 117         binfo.src.box.y = binfo.dst.box.y = 0;
 118         binfo.src.box.width = binfo.dst.box.width = ctx->pipe_framebuffer.width;
 119         binfo.src.box.height = binfo.dst.box.height = ctx->pipe_framebuffer.height;
 120
 121         /* This avoids an assert due to missing nir_texop_txb support */
 122         //binfo.src.box.depth = binfo.dst.box.depth = 1;
 123
 124         binfo.src.format = binfo.dst.format = ctx->pipe_framebuffer.cbufs[0]->texture->format;
 125
 126         assert(ctx->pipe_framebuffer.nr_cbufs == 1);
 127         binfo.mask = PIPE_MASK_RGBA;
 128         binfo.filter = PIPE_TEX_FILTER_LINEAR;
 129         binfo.scissor_enable = FALSE;
 130
 131         util_blitter_blit(ctx->blitter, &binfo);
 132 }
 133