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         job->minx = job->miny = ~0;
  43         job->maxx = job->maxy = 0;
  44
  45         return job;
  46 }
  47
  48 void
  49 panfrost_free_job(struct panfrost_context *ctx, struct panfrost_job *job)
  50 {
  51         if (!job)
  52                 return;
  53
  54         set_foreach(job->bos, entry) {
  55                 struct panfrost_bo *bo = (struct panfrost_bo *)entry->key;
  56                 panfrost_bo_unreference(ctx->base.screen, bo);
  57         }
  58
  59         _mesa_hash_table_remove_key(ctx->jobs, &job->key);
  60
  61         if (ctx->job == job)
  62                 ctx->job = NULL;
  63
  64         ralloc_free(job);
  65 }
  66
  67 struct panfrost_job *
  68 panfrost_get_job(struct panfrost_context *ctx,
  69                 struct pipe_surface **cbufs, struct pipe_surface *zsbuf)
  70 {
  71         /* Lookup the job first */
  72
  73         struct panfrost_job_key key = {
  74                 .cbufs = {
  75                         cbufs[0],
  76                         cbufs[1],
  77                         cbufs[2],
  78                         cbufs[3],
  79                 },
  80                 .zsbuf = zsbuf
  81         };
  82
  83         struct hash_entry *entry = _mesa_hash_table_search(ctx->jobs, &key);
  84
  85         if (entry)
  86                 return entry->data;
  87
  88         /* Otherwise, let's create a job */
  89
  90         struct panfrost_job *job = panfrost_create_job(ctx);
  91
  92         /* Save the created job */
  93
  94         memcpy(&job->key, &key, sizeof(key));
  95         _mesa_hash_table_insert(ctx->jobs, &job->key, job);
  96
  97         return job;
  98 }
  99
 100 /* Get the job corresponding to the FBO we're currently rendering into */
 101
 102 struct panfrost_job *
 103 panfrost_get_job_for_fbo(struct panfrost_context *ctx)
 104 {
 105         /* If we already began rendering, use that */
 106
 107         if (ctx->job)
 108                 return ctx->job;
 109
 110         /* If not, look up the job */
 111
 112         struct pipe_surface **cbufs = ctx->pipe_framebuffer.cbufs;
 113         struct pipe_surface *zsbuf = ctx->pipe_framebuffer.zsbuf;
 114         struct panfrost_job *job = panfrost_get_job(ctx, cbufs, zsbuf);
 115
 116         return job;
 117 }
 118
 119 void
 120 panfrost_job_add_bo(struct panfrost_job *job, struct panfrost_bo *bo)
 121 {
 122         if (!bo)
 123                 return;
 124
 125         if (_mesa_set_search(job->bos, bo))
 126                 return;
 127
 128         panfrost_bo_reference(bo);
 129         _mesa_set_add(job->bos, bo);
 130 }
 131
 132 void
 133 panfrost_flush_jobs_writing_resource(struct panfrost_context *panfrost,
 134                                 struct pipe_resource *prsc)
 135 {
 136 #if 0
 137         struct hash_entry *entry = _mesa_hash_table_search(panfrost->write_jobs,
 138                                                            prsc);
 139         if (entry) {
 140                 struct panfrost_job *job = entry->data;
 141                 panfrost_job_submit(panfrost, job);
 142         }
 143 #endif
 144         /* TODO stub */
 145 }
 146
 147 void
 148 panfrost_job_submit(struct panfrost_context *ctx, struct panfrost_job *job)
 149 {
 150         struct pipe_context *gallium = (struct pipe_context *) ctx;
 151         struct panfrost_screen *screen = pan_screen(gallium->screen);
 152         int ret;
 153
 154         bool has_draws = ctx->draw_count > 0;
 155         bool is_scanout = panfrost_is_scanout(ctx);
 156
 157         if (!job)
 158                 return;
 159
 160         ret = screen->driver->submit_vs_fs_job(ctx, has_draws, is_scanout);
 161
 162         if (ret)
 163                 fprintf(stderr, "panfrost_job_submit failed: %d\n", ret);
 164
 165         /* Reset job counters */
 166         ctx->draw_count = 0;
 167         ctx->vertex_job_count = 0;
 168         ctx->tiler_job_count = 0;
 169 }
 170
 171 void
 172 panfrost_job_set_requirements(struct panfrost_context *ctx,
 173                          struct panfrost_job *job)
 174 {
 175         if (ctx->rasterizer && ctx->rasterizer->base.multisample)
 176                 job->requirements |= PAN_REQ_MSAA;
 177
 178         if (ctx->depth_stencil && ctx->depth_stencil->depth.writemask)
 179                 job->requirements |= PAN_REQ_DEPTH_WRITE;
 180 }
 181
 182 static uint32_t
 183 pan_pack_color(const union pipe_color_union *color, enum pipe_format format)
 184 {
 185         /* Alpha magicked to 1.0 if there is no alpha */
 186
 187         bool has_alpha = util_format_has_alpha(format);
 188         float clear_alpha = has_alpha ? color->f[3] : 1.0f;
 189
 190         /* Packed color depends on the framebuffer format */
 191
 192         const struct util_format_description *desc =
 193                 util_format_description(format);
 194
 195         if (util_format_is_rgba8_variant(desc)) {
 196                 return (float_to_ubyte(clear_alpha) << 24) |
 197                        (float_to_ubyte(color->f[2]) << 16) |
 198                        (float_to_ubyte(color->f[1]) <<  8) |
 199                        (float_to_ubyte(color->f[0]) <<  0);
 200         } else if (format == PIPE_FORMAT_B5G6R5_UNORM) {
 201                 /* First, we convert the components to R5, G6, B5 separately */
 202                 unsigned r5 = CLAMP(color->f[0], 0.0, 1.0) * 31.0;
 203                 unsigned g6 = CLAMP(color->f[1], 0.0, 1.0) * 63.0;
 204                 unsigned b5 = CLAMP(color->f[2], 0.0, 1.0) * 31.0;
 205
 206                 /* Then we pack into a sparse u32. TODO: Why these shifts? */
 207                 return (b5 << 25) | (g6 << 14) | (r5 << 5);
 208         } else {
 209                 /* Unknown format */
 210                 assert(0);
 211         }
 212
 213         return 0;
 214 }
 215
 216 void
 217 panfrost_job_clear(struct panfrost_context *ctx,
 218                 struct panfrost_job *job,
 219                 unsigned buffers,
 220                 const union pipe_color_union *color,
 221                 double depth, unsigned stencil)
 222
 223 {
 224         if (buffers & PIPE_CLEAR_COLOR) {
 225                 enum pipe_format format = ctx->pipe_framebuffer.cbufs[0]->format;
 226                 job->clear_color = pan_pack_color(color, format);
 227         }
 228
 229         if (buffers & PIPE_CLEAR_DEPTH) {
 230                 job->clear_depth = depth;
 231         }
 232
 233         if (buffers & PIPE_CLEAR_STENCIL) {
 234                 job->clear_stencil = stencil;
 235         }
 236
 237         job->clear |= buffers;
 238
 239         /* Clearing affects the entire framebuffer (by definition -- this is
 240          * the Gallium clear callback, which clears the whole framebuffer. If
 241          * the scissor test were enabled from the GL side, the state tracker
 242          * would emit a quad instead and we wouldn't go down this code path) */
 243
 244         panfrost_job_union_scissor(job, 0, 0,
 245                         ctx->pipe_framebuffer.width,
 246                         ctx->pipe_framebuffer.height);
 247 }
 248
 249 void
 250 panfrost_flush_jobs_reading_resource(struct panfrost_context *panfrost,
 251                                 struct pipe_resource *prsc)
 252 {
 253         struct panfrost_resource *rsc = pan_resource(prsc);
 254
 255         panfrost_flush_jobs_writing_resource(panfrost, prsc);
 256
 257         hash_table_foreach(panfrost->jobs, entry) {
 258                 struct panfrost_job *job = entry->data;
 259
 260                 if (_mesa_set_search(job->bos, rsc->bo)) {
 261                         printf("TODO: submit job for flush\n");
 262                         //panfrost_job_submit(panfrost, job);
 263                         continue;
 264                 }
 265         }
 266 }
 267
 268 static bool
 269 panfrost_job_compare(const void *a, const void *b)
 270 {
 271         return memcmp(a, b, sizeof(struct panfrost_job_key)) == 0;
 272 }
 273
 274 static uint32_t
 275 panfrost_job_hash(const void *key)
 276 {
 277         return _mesa_hash_data(key, sizeof(struct panfrost_job_key));
 278 }
 279
 280 /* Given a new bounding rectangle (scissor), let the job cover the union of the
 281  * new and old bounding rectangles */
 282
 283 void
 284 panfrost_job_union_scissor(struct panfrost_job *job,
 285                 unsigned minx, unsigned miny,
 286                 unsigned maxx, unsigned maxy)
 287 {
 288         job->minx = MIN2(job->minx, minx);
 289         job->miny = MIN2(job->miny, miny);
 290         job->maxx = MAX2(job->maxx, maxx);
 291         job->maxy = MAX2(job->maxy, maxy);
 292 }
 293
 294 void
 295 panfrost_job_init(struct panfrost_context *ctx)
 296 {
 297         ctx->jobs = _mesa_hash_table_create(ctx,
 298                                             panfrost_job_hash,
 299                                             panfrost_job_compare);
 300
 301         ctx->write_jobs = _mesa_hash_table_create(ctx,
 302                                             _mesa_hash_pointer,
 303                                             _mesa_key_pointer_equal);
 304 }