src/gallium/drivers/vc4/vc4_context.c

   1 /*
   2  * Copyright © 2014 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/ralloc.h"
  29 #include "util/u_inlines.h"
  30 #include "util/u_memory.h"
  31 #include "util/u_blitter.h"
  32 #include "util/u_upload_mgr.h"
  33 #include "indices/u_primconvert.h"
  34 #include "pipe/p_screen.h"
  35
  36 #include "vc4_screen.h"
  37 #include "vc4_context.h"
  38 #include "vc4_resource.h"
  39
  40 void
  41 vc4_flush(struct pipe_context *pctx)
  42 {
  43         struct vc4_context *vc4 = vc4_context(pctx);
  44         struct pipe_surface *cbuf = vc4->framebuffer.cbufs[0];
  45         struct pipe_surface *zsbuf = vc4->framebuffer.zsbuf;
  46
  47         if (cbuf && (vc4->resolve & PIPE_CLEAR_COLOR0)) {
  48                 pipe_surface_reference(&vc4->color_write,
  49                                        cbuf->texture->nr_samples > 1 ?
  50                                        NULL : cbuf);
  51                 pipe_surface_reference(&vc4->msaa_color_write,
  52                                        cbuf->texture->nr_samples > 1 ?
  53                                        cbuf : NULL);
  54
  55                 if (!(vc4->cleared & PIPE_CLEAR_COLOR0)) {
  56                         pipe_surface_reference(&vc4->color_read, cbuf);
  57                 } else {
  58                         pipe_surface_reference(&vc4->color_read, NULL);
  59                 }
  60
  61         } else {
  62                 pipe_surface_reference(&vc4->color_write, NULL);
  63                 pipe_surface_reference(&vc4->color_read, NULL);
  64                 pipe_surface_reference(&vc4->msaa_color_write, NULL);
  65         }
  66
  67         if (vc4->framebuffer.zsbuf &&
  68             (vc4->resolve & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL))) {
  69                 pipe_surface_reference(&vc4->zs_write,
  70                                        zsbuf->texture->nr_samples > 1 ?
  71                                        NULL : zsbuf);
  72                 pipe_surface_reference(&vc4->msaa_zs_write,
  73                                        zsbuf->texture->nr_samples > 1 ?
  74                                        zsbuf : NULL);
  75
  76                 if (!(vc4->cleared & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL))) {
  77                         pipe_surface_reference(&vc4->zs_read, zsbuf);
  78                 } else {
  79                         pipe_surface_reference(&vc4->zs_read, NULL);
  80                 }
  81         } else {
  82                 pipe_surface_reference(&vc4->zs_write, NULL);
  83                 pipe_surface_reference(&vc4->zs_read, NULL);
  84                 pipe_surface_reference(&vc4->msaa_zs_write, NULL);
  85         }
  86
  87         vc4_job_submit(vc4);
  88 }
  89
  90 static void
  91 vc4_pipe_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
  92                unsigned flags)
  93 {
  94         struct vc4_context *vc4 = vc4_context(pctx);
  95
  96         vc4_flush(pctx);
  97
  98         if (fence) {
  99                 struct pipe_screen *screen = pctx->screen;
 100                 struct vc4_fence *f = vc4_fence_create(vc4->screen,
 101                                                        vc4->last_emit_seqno);
 102                 screen->fence_reference(screen, fence, NULL);
 103                 *fence = (struct pipe_fence_handle *)f;
 104         }
 105 }
 106
 107 /**
 108  * Flushes the current command lists if they reference the given BO.
 109  *
 110  * This helps avoid flushing the command buffers when unnecessary.
 111  */
 112 bool
 113 vc4_cl_references_bo(struct pipe_context *pctx, struct vc4_bo *bo,
 114                      bool include_reads)
 115 {
 116         struct vc4_context *vc4 = vc4_context(pctx);
 117
 118         if (!vc4->needs_flush)
 119                 return false;
 120
 121         /* Walk all the referenced BOs in the drawing command list to see if
 122          * they match.
 123          */
 124         if (include_reads) {
 125                 struct vc4_bo **referenced_bos = vc4->bo_pointers.base;
 126                 for (int i = 0; i < cl_offset(&vc4->bo_handles) / 4; i++) {
 127                         if (referenced_bos[i] == bo) {
 128                                 return true;
 129                         }
 130                 }
 131         }
 132
 133         /* Also check for the Z/color buffers, since the references to those
 134          * are only added immediately before submit.
 135          */
 136         struct vc4_surface *csurf = vc4_surface(vc4->framebuffer.cbufs[0]);
 137         if (csurf) {
 138                 struct vc4_resource *ctex = vc4_resource(csurf->base.texture);
 139                 if (ctex->bo == bo) {
 140                         return true;
 141                 }
 142         }
 143
 144         struct vc4_surface *zsurf = vc4_surface(vc4->framebuffer.zsbuf);
 145         if (zsurf) {
 146                 struct vc4_resource *ztex =
 147                         vc4_resource(zsurf->base.texture);
 148                 if (ztex->bo == bo) {
 149                         return true;
 150                 }
 151         }
 152
 153         return false;
 154 }
 155
 156 static void
 157 vc4_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
 158 {
 159         struct vc4_context *vc4 = vc4_context(pctx);
 160         struct pipe_surface *zsurf = vc4->framebuffer.zsbuf;
 161
 162         if (zsurf && zsurf->texture == prsc)
 163                 vc4->resolve &= ~(PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL);
 164 }
 165
 166 static void
 167 vc4_context_destroy(struct pipe_context *pctx)
 168 {
 169         struct vc4_context *vc4 = vc4_context(pctx);
 170
 171         if (vc4->blitter)
 172                 util_blitter_destroy(vc4->blitter);
 173
 174         if (vc4->primconvert)
 175                 util_primconvert_destroy(vc4->primconvert);
 176
 177         if (vc4->uploader)
 178                 u_upload_destroy(vc4->uploader);
 179
 180         slab_destroy(&vc4->transfer_pool);
 181
 182         pipe_surface_reference(&vc4->framebuffer.cbufs[0], NULL);
 183         pipe_surface_reference(&vc4->framebuffer.zsbuf, NULL);
 184
 185         pipe_surface_reference(&vc4->color_write, NULL);
 186         pipe_surface_reference(&vc4->color_read, NULL);
 187
 188         vc4_program_fini(pctx);
 189
 190         ralloc_free(vc4);
 191 }
 192
 193 struct pipe_context *
 194 vc4_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
 195 {
 196         struct vc4_screen *screen = vc4_screen(pscreen);
 197         struct vc4_context *vc4;
 198
 199         /* Prevent dumping of the shaders built during context setup. */
 200         uint32_t saved_shaderdb_flag = vc4_debug & VC4_DEBUG_SHADERDB;
 201         vc4_debug &= ~VC4_DEBUG_SHADERDB;
 202
 203         vc4 = rzalloc(NULL, struct vc4_context);
 204         if (!vc4)
 205                 return NULL;
 206         struct pipe_context *pctx = &vc4->base;
 207
 208         vc4->screen = screen;
 209
 210         pctx->screen = pscreen;
 211         pctx->priv = priv;
 212         pctx->destroy = vc4_context_destroy;
 213         pctx->flush = vc4_pipe_flush;
 214         pctx->invalidate_resource = vc4_invalidate_resource;
 215
 216         vc4_draw_init(pctx);
 217         vc4_state_init(pctx);
 218         vc4_program_init(pctx);
 219         vc4_query_init(pctx);
 220         vc4_resource_context_init(pctx);
 221
 222         vc4_job_init(vc4);
 223
 224         vc4->fd = screen->fd;
 225
 226         slab_create(&vc4->transfer_pool, sizeof(struct vc4_transfer),
 227                          16);
 228         vc4->blitter = util_blitter_create(pctx);
 229         if (!vc4->blitter)
 230                 goto fail;
 231
 232         vc4->primconvert = util_primconvert_create(pctx,
 233                                                    (1 << PIPE_PRIM_QUADS) - 1);
 234         if (!vc4->primconvert)
 235                 goto fail;
 236
 237         vc4->uploader = u_upload_create(pctx, 16 * 1024,
 238                                         PIPE_BIND_INDEX_BUFFER,
 239                                         PIPE_USAGE_STREAM);
 240
 241         vc4_debug |= saved_shaderdb_flag;
 242
 243         vc4->sample_mask = (1 << VC4_MAX_SAMPLES) - 1;
 244
 245         return &vc4->base;
 246
 247 fail:
 248         pctx->destroy(pctx);
 249         return NULL;
 250 }