src/gallium/drivers/v3d/v3d_context.c

   1 /*
   2  * Copyright © 2014-2017 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 <xf86drm.h>
  25 #include <err.h>
  26
  27 #include "pipe/p_defines.h"
  28 #include "util/hash_table.h"
  29 #include "util/ralloc.h"
  30 #include "util/u_inlines.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_blitter.h"
  33 #include "util/u_upload_mgr.h"
  34 #include "indices/u_primconvert.h"
  35 #include "pipe/p_screen.h"
  36
  37 #include "v3d_screen.h"
  38 #include "v3d_context.h"
  39 #include "v3d_resource.h"
  40 #include "broadcom/compiler/v3d_compiler.h"
  41
  42 void
  43 v3d_flush(struct pipe_context *pctx)
  44 {
  45         struct v3d_context *v3d = v3d_context(pctx);
  46
  47         hash_table_foreach(v3d->jobs, entry) {
  48                 struct v3d_job *job = entry->data;
  49                 v3d_job_submit(v3d, job);
  50         }
  51 }
  52
  53 static void
  54 v3d_pipe_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
  55                unsigned flags)
  56 {
  57         struct v3d_context *v3d = v3d_context(pctx);
  58
  59         v3d_flush(pctx);
  60
  61         if (fence) {
  62                 struct pipe_screen *screen = pctx->screen;
  63                 struct v3d_fence *f = v3d_fence_create(v3d);
  64                 screen->fence_reference(screen, fence, NULL);
  65                 *fence = (struct pipe_fence_handle *)f;
  66         }
  67 }
  68
  69 static void
  70 v3d_memory_barrier(struct pipe_context *pctx, unsigned int flags)
  71 {
  72         struct v3d_context *v3d = v3d_context(pctx);
  73
  74         /* We only need to flush jobs writing to SSBOs/images. */
  75         perf_debug("Flushing all jobs for glMemoryBarrier(), could do better");
  76         v3d_flush(pctx);
  77 }
  78
  79 static void
  80 v3d_set_debug_callback(struct pipe_context *pctx,
  81                        const struct pipe_debug_callback *cb)
  82 {
  83         struct v3d_context *v3d = v3d_context(pctx);
  84
  85         if (cb)
  86                 v3d->debug = *cb;
  87         else
  88                 memset(&v3d->debug, 0, sizeof(v3d->debug));
  89 }
  90
  91 static void
  92 v3d_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
  93 {
  94         struct v3d_context *v3d = v3d_context(pctx);
  95         struct v3d_resource *rsc = v3d_resource(prsc);
  96
  97         rsc->initialized_buffers = 0;
  98
  99         struct hash_entry *entry = _mesa_hash_table_search(v3d->write_jobs,
 100                                                            prsc);
 101         if (!entry)
 102                 return;
 103
 104         struct v3d_job *job = entry->data;
 105         if (job->key.zsbuf && job->key.zsbuf->texture == prsc)
 106                 job->store &= ~(PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL);
 107 }
 108
 109 static void
 110 v3d_context_destroy(struct pipe_context *pctx)
 111 {
 112         struct v3d_context *v3d = v3d_context(pctx);
 113
 114         v3d_flush(pctx);
 115
 116         if (v3d->blitter)
 117                 util_blitter_destroy(v3d->blitter);
 118
 119         if (v3d->primconvert)
 120                 util_primconvert_destroy(v3d->primconvert);
 121
 122         if (v3d->uploader)
 123                 u_upload_destroy(v3d->uploader);
 124         if (v3d->state_uploader)
 125                 u_upload_destroy(v3d->state_uploader);
 126
 127         slab_destroy_child(&v3d->transfer_pool);
 128
 129         pipe_surface_reference(&v3d->framebuffer.cbufs[0], NULL);
 130         pipe_surface_reference(&v3d->framebuffer.zsbuf, NULL);
 131
 132         v3d_program_fini(pctx);
 133
 134         ralloc_free(v3d);
 135 }
 136
 137 static void
 138 v3d_get_sample_position(struct pipe_context *pctx,
 139                         unsigned sample_count, unsigned sample_index,
 140                         float *xy)
 141 {
 142         struct v3d_context *v3d = v3d_context(pctx);
 143
 144         if (sample_count <= 1) {
 145                 xy[0] = 0.5;
 146                 xy[1] = 0.5;
 147         } else {
 148                 static const int xoffsets_v33[] = { 1, -3, 3, -1 };
 149                 static const int xoffsets_v42[] = { -1, 3, -3, 1 };
 150                 const int *xoffsets = (v3d->screen->devinfo.ver >= 42 ?
 151                                        xoffsets_v42 : xoffsets_v33);
 152
 153                 xy[0] = 0.5 + xoffsets[sample_index] * .125;
 154                 xy[1] = .125 + sample_index * .25;
 155         }
 156 }
 157
 158 struct pipe_context *
 159 v3d_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
 160 {
 161         struct v3d_screen *screen = v3d_screen(pscreen);
 162         struct v3d_context *v3d;
 163
 164         /* Prevent dumping of the shaders built during context setup. */
 165         uint32_t saved_shaderdb_flag = V3D_DEBUG & V3D_DEBUG_SHADERDB;
 166         V3D_DEBUG &= ~V3D_DEBUG_SHADERDB;
 167
 168         v3d = rzalloc(NULL, struct v3d_context);
 169         if (!v3d)
 170                 return NULL;
 171         struct pipe_context *pctx = &v3d->base;
 172
 173         v3d->screen = screen;
 174
 175         int ret = drmSyncobjCreate(screen->fd, DRM_SYNCOBJ_CREATE_SIGNALED,
 176                                    &v3d->out_sync);
 177         if (ret) {
 178                 ralloc_free(v3d);
 179                 return NULL;
 180         }
 181
 182         pctx->screen = pscreen;
 183         pctx->priv = priv;
 184         pctx->destroy = v3d_context_destroy;
 185         pctx->flush = v3d_pipe_flush;
 186         pctx->memory_barrier = v3d_memory_barrier;
 187         pctx->set_debug_callback = v3d_set_debug_callback;
 188         pctx->invalidate_resource = v3d_invalidate_resource;
 189         pctx->get_sample_position = v3d_get_sample_position;
 190
 191         if (screen->devinfo.ver >= 41) {
 192                 v3d41_draw_init(pctx);
 193                 v3d41_state_init(pctx);
 194         } else {
 195                 v3d33_draw_init(pctx);
 196                 v3d33_state_init(pctx);
 197         }
 198         v3d_program_init(pctx);
 199         v3d_query_init(pctx);
 200         v3d_resource_context_init(pctx);
 201
 202         v3d_job_init(v3d);
 203
 204         v3d->fd = screen->fd;
 205
 206         slab_create_child(&v3d->transfer_pool, &screen->transfer_pool);
 207
 208         v3d->uploader = u_upload_create_default(&v3d->base);
 209         v3d->base.stream_uploader = v3d->uploader;
 210         v3d->base.const_uploader = v3d->uploader;
 211         v3d->state_uploader = u_upload_create(&v3d->base,
 212                                               4096,
 213                                               PIPE_BIND_CONSTANT_BUFFER,
 214                                               PIPE_USAGE_STREAM, 0);
 215
 216         v3d->blitter = util_blitter_create(pctx);
 217         if (!v3d->blitter)
 218                 goto fail;
 219         v3d->blitter->use_index_buffer = true;
 220
 221         v3d->primconvert = util_primconvert_create(pctx,
 222                                                    (1 << PIPE_PRIM_QUADS) - 1);
 223         if (!v3d->primconvert)
 224                 goto fail;
 225
 226         V3D_DEBUG |= saved_shaderdb_flag;
 227
 228         v3d->sample_mask = (1 << V3D_MAX_SAMPLES) - 1;
 229         v3d->active_queries = true;
 230
 231         return &v3d->base;
 232
 233 fail:
 234         pctx->destroy(pctx);
 235         return NULL;
 236 }