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
  41 void
  42 v3d_flush(struct pipe_context *pctx)
  43 {
  44         struct v3d_context *v3d = v3d_context(pctx);
  45
  46         hash_table_foreach(v3d->jobs, entry) {
  47                 struct v3d_job *job = entry->data;
  48                 v3d_job_submit(v3d, job);
  49         }
  50 }
  51
  52 static void
  53 v3d_pipe_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
  54                unsigned flags)
  55 {
  56         struct v3d_context *v3d = v3d_context(pctx);
  57
  58         v3d_flush(pctx);
  59
  60         if (fence) {
  61                 struct pipe_screen *screen = pctx->screen;
  62                 struct v3d_fence *f = v3d_fence_create(v3d);
  63                 screen->fence_reference(screen, fence, NULL);
  64                 *fence = (struct pipe_fence_handle *)f;
  65         }
  66 }
  67
  68 static void
  69 v3d_memory_barrier(struct pipe_context *pctx, unsigned int flags)
  70 {
  71         struct v3d_context *v3d = v3d_context(pctx);
  72
  73         /* We only need to flush jobs writing to SSBOs/images. */
  74         perf_debug("Flushing all jobs for glMemoryBarrier(), could do better");
  75         v3d_flush(pctx);
  76 }
  77
  78 static void
  79 v3d_set_debug_callback(struct pipe_context *pctx,
  80                        const struct pipe_debug_callback *cb)
  81 {
  82         struct v3d_context *v3d = v3d_context(pctx);
  83
  84         if (cb)
  85                 v3d->debug = *cb;
  86         else
  87                 memset(&v3d->debug, 0, sizeof(v3d->debug));
  88 }
  89
  90 static void
  91 v3d_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
  92 {
  93         struct v3d_context *v3d = v3d_context(pctx);
  94         struct v3d_resource *rsc = v3d_resource(prsc);
  95
  96         rsc->initialized_buffers = 0;
  97
  98         struct hash_entry *entry = _mesa_hash_table_search(v3d->write_jobs,
  99                                                            prsc);
 100         if (!entry)
 101                 return;
 102
 103         struct v3d_job *job = entry->data;
 104         if (job->key.zsbuf && job->key.zsbuf->texture == prsc)
 105                 job->store &= ~(PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL);
 106 }
 107
 108 static void
 109 v3d_context_destroy(struct pipe_context *pctx)
 110 {
 111         struct v3d_context *v3d = v3d_context(pctx);
 112
 113         v3d_flush(pctx);
 114
 115         if (v3d->blitter)
 116                 util_blitter_destroy(v3d->blitter);
 117
 118         if (v3d->primconvert)
 119                 util_primconvert_destroy(v3d->primconvert);
 120
 121         if (v3d->uploader)
 122                 u_upload_destroy(v3d->uploader);
 123         if (v3d->state_uploader)
 124                 u_upload_destroy(v3d->state_uploader);
 125
 126         slab_destroy_child(&v3d->transfer_pool);
 127
 128         pipe_surface_reference(&v3d->framebuffer.cbufs[0], NULL);
 129         pipe_surface_reference(&v3d->framebuffer.zsbuf, NULL);
 130
 131         v3d_program_fini(pctx);
 132
 133         ralloc_free(v3d);
 134 }
 135
 136 static void
 137 v3d_get_sample_position(struct pipe_context *pctx,
 138                         unsigned sample_count, unsigned sample_index,
 139                         float *xy)
 140 {
 141         struct v3d_context *v3d = v3d_context(pctx);
 142
 143         if (sample_count <= 1) {
 144                 xy[0] = 0.5;
 145                 xy[1] = 0.5;
 146         } else {
 147                 static const int xoffsets_v33[] = { 1, -3, 3, -1 };
 148                 static const int xoffsets_v42[] = { -1, 3, -3, 1 };
 149                 const int *xoffsets = (v3d->screen->devinfo.ver >= 42 ?
 150                                        xoffsets_v42 : xoffsets_v33);
 151
 152                 xy[0] = 0.5 + xoffsets[sample_index] * .125;
 153                 xy[1] = .125 + sample_index * .25;
 154         }
 155 }
 156
 157 struct pipe_context *
 158 v3d_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
 159 {
 160         struct v3d_screen *screen = v3d_screen(pscreen);
 161         struct v3d_context *v3d;
 162
 163         /* Prevent dumping of the shaders built during context setup. */
 164         uint32_t saved_shaderdb_flag = V3D_DEBUG & V3D_DEBUG_SHADERDB;
 165         V3D_DEBUG &= ~V3D_DEBUG_SHADERDB;
 166
 167         v3d = rzalloc(NULL, struct v3d_context);
 168         if (!v3d)
 169                 return NULL;
 170         struct pipe_context *pctx = &v3d->base;
 171
 172         v3d->screen = screen;
 173
 174         int ret = drmSyncobjCreate(screen->fd, DRM_SYNCOBJ_CREATE_SIGNALED,
 175                                    &v3d->out_sync);
 176         if (ret) {
 177                 ralloc_free(v3d);
 178                 return NULL;
 179         }
 180
 181         pctx->screen = pscreen;
 182         pctx->priv = priv;
 183         pctx->destroy = v3d_context_destroy;
 184         pctx->flush = v3d_pipe_flush;
 185         pctx->memory_barrier = v3d_memory_barrier;
 186         pctx->set_debug_callback = v3d_set_debug_callback;
 187         pctx->invalidate_resource = v3d_invalidate_resource;
 188         pctx->get_sample_position = v3d_get_sample_position;
 189
 190         if (screen->devinfo.ver >= 41) {
 191                 v3d41_draw_init(pctx);
 192                 v3d41_state_init(pctx);
 193         } else {
 194                 v3d33_draw_init(pctx);
 195                 v3d33_state_init(pctx);
 196         }
 197         v3d_program_init(pctx);
 198         v3d_query_init(pctx);
 199         v3d_resource_context_init(pctx);
 200
 201         v3d_job_init(v3d);
 202
 203         v3d->fd = screen->fd;
 204
 205         slab_create_child(&v3d->transfer_pool, &screen->transfer_pool);
 206
 207         v3d->uploader = u_upload_create_default(&v3d->base);
 208         v3d->base.stream_uploader = v3d->uploader;
 209         v3d->base.const_uploader = v3d->uploader;
 210         v3d->state_uploader = u_upload_create(&v3d->base,
 211                                               4096,
 212                                               PIPE_BIND_CONSTANT_BUFFER,
 213                                               PIPE_USAGE_STREAM, 0);
 214
 215         v3d->blitter = util_blitter_create(pctx);
 216         if (!v3d->blitter)
 217                 goto fail;
 218         v3d->blitter->use_index_buffer = true;
 219
 220         v3d->primconvert = util_primconvert_create(pctx,
 221                                                    (1 << PIPE_PRIM_QUADS) - 1);
 222         if (!v3d->primconvert)
 223                 goto fail;
 224
 225         V3D_DEBUG |= saved_shaderdb_flag;
 226
 227         v3d->sample_mask = (1 << VC5_MAX_SAMPLES) - 1;
 228         v3d->active_queries = true;
 229
 230         return &v3d->base;
 231
 232 fail:
 233         pctx->destroy(pctx);
 234         return NULL;
 235 }