src/gallium/drivers/panfrost/pan_job.c

   1 /*
   2  * Copyright (C) 2019 Alyssa Rosenzweig
   3  * Copyright (C) 2014-2017 Broadcom
   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  */
  25
  26 #include "pan_context.h"
  27 #include "util/hash_table.h"
  28 #include "util/ralloc.h"
  29 #include "util/u_format.h"
  30
  31 struct panfrost_job *
  32 panfrost_create_job(struct panfrost_context *ctx)
  33 {
  34         struct panfrost_job *job = rzalloc(ctx, struct panfrost_job);
  35
  36         job->ctx = ctx;
  37
  38         job->bos = _mesa_set_create(job,
  39                                     _mesa_hash_pointer,
  40                                     _mesa_key_pointer_equal);
  41
  42         return job;
  43 }
  44
  45 void
  46 panfrost_free_job(struct panfrost_context *ctx, struct panfrost_job *job)
  47 {
  48         if (!job)
  49                 return;
  50
  51         set_foreach(job->bos, entry) {
  52                 struct panfrost_bo *bo = (struct panfrost_bo *)entry->key;
  53                 panfrost_bo_unreference(ctx->base.screen, bo);
  54         }
  55
  56         _mesa_hash_table_remove_key(ctx->jobs, &job->key);
  57
  58         if (ctx->job == job)
  59                 ctx->job = NULL;
  60
  61         ralloc_free(job);
  62 }
  63
  64 struct panfrost_job *
  65 panfrost_get_job(struct panfrost_context *ctx,
  66                 struct pipe_surface **cbufs, struct pipe_surface *zsbuf)
  67 {
  68         /* Lookup the job first */
  69
  70         struct panfrost_job_key key = {
  71                 .cbufs = {
  72                         cbufs[0],
  73                         cbufs[1],
  74                         cbufs[2],
  75                         cbufs[3],
  76                 },
  77                 .zsbuf = zsbuf
  78         };
  79
  80         struct hash_entry *entry = _mesa_hash_table_search(ctx->jobs, &key);
  81
  82         if (entry)
  83                 return entry->data;
  84
  85         /* Otherwise, let's create a job */
  86
  87         struct panfrost_job *job = panfrost_create_job(ctx);
  88
  89         /* Save the created job */
  90
  91         memcpy(&job->key, &key, sizeof(key));
  92         _mesa_hash_table_insert(ctx->jobs, &job->key, job);
  93
  94         return job;
  95 }
  96
  97 /* Get the job corresponding to the FBO we're currently rendering into */
  98
  99 struct panfrost_job *
 100 panfrost_get_job_for_fbo(struct panfrost_context *ctx)
 101 {
 102         /* If we already began rendering, use that */
 103
 104         if (ctx->job)
 105                 return ctx->job;
 106
 107         /* If not, look up the job */
 108
 109         struct pipe_surface **cbufs = ctx->pipe_framebuffer.cbufs;
 110         struct pipe_surface *zsbuf = ctx->pipe_framebuffer.zsbuf;
 111         struct panfrost_job *job = panfrost_get_job(ctx, cbufs, zsbuf);
 112
 113         return job;
 114 }
 115
 116 void
 117 panfrost_job_add_bo(struct panfrost_job *job, struct panfrost_bo *bo)
 118 {
 119         if (!bo)
 120                 return;
 121
 122         if (_mesa_set_search(job->bos, bo))
 123                 return;
 124
 125         panfrost_bo_reference(bo);
 126         _mesa_set_add(job->bos, bo);
 127 }
 128
 129 void
 130 panfrost_flush_jobs_writing_resource(struct panfrost_context *panfrost,
 131                                 struct pipe_resource *prsc)
 132 {
 133 #if 0
 134         struct hash_entry *entry = _mesa_hash_table_search(panfrost->write_jobs,
 135                                                            prsc);
 136         if (entry) {
 137                 struct panfrost_job *job = entry->data;
 138                 panfrost_job_submit(panfrost, job);
 139         }
 140 #endif
 141         /* TODO stub */
 142 }
 143
 144 void
 145 panfrost_job_submit(struct panfrost_context *ctx, struct panfrost_job *job)
 146 {
 147         struct pipe_context *gallium = (struct pipe_context *) ctx;
 148         struct panfrost_screen *screen = pan_screen(gallium->screen);
 149         int ret;
 150
 151         bool has_draws = ctx->draw_count > 0;
 152         bool is_scanout = panfrost_is_scanout(ctx);
 153
 154         if (!job)
 155                 return;
 156
 157         ret = screen->driver->submit_vs_fs_job(ctx, has_draws, is_scanout);
 158
 159         if (ret)
 160                 fprintf(stderr, "panfrost_job_submit failed: %d\n", ret);
 161
 162         /* Reset job counters */
 163         ctx->draw_count = 0;
 164         ctx->vertex_job_count = 0;
 165         ctx->tiler_job_count = 0;
 166 }
 167
 168 void
 169 panfrost_job_set_requirements(struct panfrost_context *ctx,
 170                          struct panfrost_job *job)
 171 {
 172         if (ctx->rasterizer && ctx->rasterizer->base.multisample)
 173                 job->requirements |= PAN_REQ_MSAA;
 174
 175         if (ctx->depth_stencil && ctx->depth_stencil->depth.writemask)
 176                 job->requirements |= PAN_REQ_DEPTH_WRITE;
 177 }
 178
 179 static uint32_t
 180 pan_pack_color(const union pipe_color_union *color, enum pipe_format format)
 181 {
 182         /* Alpha magicked to 1.0 if there is no alpha */
 183
 184         bool has_alpha = util_format_has_alpha(format);
 185         float clear_alpha = has_alpha ? color->f[3] : 1.0f;
 186
 187         /* Packed color depends on the framebuffer format */
 188
 189         const struct util_format_description *desc =
 190                 util_format_description(format);
 191
 192         if (util_format_is_rgba8_variant(desc)) {
 193                 return (float_to_ubyte(clear_alpha) << 24) |
 194                        (float_to_ubyte(color->f[2]) << 16) |
 195                        (float_to_ubyte(color->f[1]) <<  8) |
 196                        (float_to_ubyte(color->f[0]) <<  0);
 197         } else if (format == PIPE_FORMAT_B5G6R5_UNORM) {
 198                 /* First, we convert the components to R5, G6, B5 separately */
 199                 unsigned r5 = CLAMP(color->f[0], 0.0, 1.0) * 31.0;
 200                 unsigned g6 = CLAMP(color->f[1], 0.0, 1.0) * 63.0;
 201                 unsigned b5 = CLAMP(color->f[2], 0.0, 1.0) * 31.0;
 202
 203                 /* Then we pack into a sparse u32. TODO: Why these shifts? */
 204                 return (b5 << 25) | (g6 << 14) | (r5 << 5);
 205         } else {
 206                 /* Unknown format */
 207                 assert(0);
 208         }
 209
 210         return 0;
 211 }
 212
 213 void
 214 panfrost_job_clear(struct panfrost_context *ctx,
 215                 struct panfrost_job *job,
 216                 unsigned buffers,
 217                 const union pipe_color_union *color,
 218                 double depth, unsigned stencil)
 219
 220 {
 221         if (buffers & PIPE_CLEAR_COLOR) {
 222                 enum pipe_format format = ctx->pipe_framebuffer.cbufs[0]->format;
 223                 job->clear_color = pan_pack_color(color, format);
 224         }
 225
 226         if (buffers & PIPE_CLEAR_DEPTH) {
 227                 job->clear_depth = depth;
 228         }
 229
 230         if (buffers & PIPE_CLEAR_STENCIL) {
 231                 job->clear_stencil = stencil;
 232         }
 233
 234         job->clear |= buffers;
 235 }
 236
 237 void
 238 panfrost_flush_jobs_reading_resource(struct panfrost_context *panfrost,
 239                                 struct pipe_resource *prsc)
 240 {
 241         struct panfrost_resource *rsc = pan_resource(prsc);
 242
 243         panfrost_flush_jobs_writing_resource(panfrost, prsc);
 244
 245         hash_table_foreach(panfrost->jobs, entry) {
 246                 struct panfrost_job *job = entry->data;
 247
 248                 if (_mesa_set_search(job->bos, rsc->bo)) {
 249                         printf("TODO: submit job for flush\n");
 250                         //panfrost_job_submit(panfrost, job);
 251                         continue;
 252                 }
 253         }
 254 }
 255
 256 static bool
 257 panfrost_job_compare(const void *a, const void *b)
 258 {
 259         return memcmp(a, b, sizeof(struct panfrost_job_key)) == 0;
 260 }
 261
 262 static uint32_t
 263 panfrost_job_hash(const void *key)
 264 {
 265         return _mesa_hash_data(key, sizeof(struct panfrost_job_key));
 266 }
 267
 268 void
 269 panfrost_job_init(struct panfrost_context *ctx)
 270 {
 271         ctx->jobs = _mesa_hash_table_create(ctx,
 272                                             panfrost_job_hash,
 273                                             panfrost_job_compare);
 274
 275         ctx->write_jobs = _mesa_hash_table_create(ctx,
 276                                             _mesa_hash_pointer,
 277                                             _mesa_key_pointer_equal);
 278 }