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         struct vc4_job *job = vc4->job;
  47
  48         if (cbuf && (job->resolve & PIPE_CLEAR_COLOR0)) {
  49                 if (cbuf->texture->nr_samples > 1) {
  50                         pipe_surface_reference(&job->msaa_color_write, cbuf);
  51                 } else {
  52                         pipe_surface_reference(&job->color_write, cbuf);
  53                 }
  54
  55                 if (!(job->cleared & PIPE_CLEAR_COLOR0)) {
  56                         pipe_surface_reference(&job->color_read, cbuf);
  57                 }
  58
  59         }
  60
  61         if (zsbuf && (job->resolve & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL))) {
  62                 if (zsbuf->texture->nr_samples > 1) {
  63                         pipe_surface_reference(&job->msaa_zs_write, zsbuf);
  64                 } else {
  65                         pipe_surface_reference(&job->zs_write, zsbuf);
  66                 }
  67
  68                 if (!(job->cleared & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL))) {
  69                         pipe_surface_reference(&job->zs_read, zsbuf);
  70                 }
  71         }
  72
  73         vc4_job_submit(vc4, job);
  74
  75         /* We have no hardware context saved between our draw calls, so we
  76          * need to flag the next draw as needing all state emitted.  Emitting
  77          * all state at the start of our draws is also what ensures that we
  78          * return to the state we need after a previous tile has finished.
  79          */
  80         vc4->dirty = ~0;
  81 }
  82
  83 static void
  84 vc4_pipe_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
  85                unsigned flags)
  86 {
  87         struct vc4_context *vc4 = vc4_context(pctx);
  88
  89         vc4_flush(pctx);
  90
  91         if (fence) {
  92                 struct pipe_screen *screen = pctx->screen;
  93                 struct vc4_fence *f = vc4_fence_create(vc4->screen,
  94                                                        vc4->last_emit_seqno);
  95                 screen->fence_reference(screen, fence, NULL);
  96                 *fence = (struct pipe_fence_handle *)f;
  97         }
  98 }
  99
 100 /**
 101  * Flushes the current command lists if they reference the given BO.
 102  *
 103  * This helps avoid flushing the command buffers when unnecessary.
 104  */
 105 bool
 106 vc4_cl_references_bo(struct pipe_context *pctx, struct vc4_bo *bo,
 107                      bool include_reads)
 108 {
 109         struct vc4_context *vc4 = vc4_context(pctx);
 110         struct vc4_job *job = vc4->job;
 111
 112         if (!job->needs_flush)
 113                 return false;
 114
 115         /* Walk all the referenced BOs in the drawing command list to see if
 116          * they match.
 117          */
 118         if (include_reads) {
 119                 struct vc4_bo **referenced_bos = job->bo_pointers.base;
 120                 for (int i = 0; i < cl_offset(&job->bo_handles) / 4; i++) {
 121                         if (referenced_bos[i] == bo) {
 122                                 return true;
 123                         }
 124                 }
 125         }
 126
 127         /* Also check for the Z/color buffers, since the references to those
 128          * are only added immediately before submit.
 129          */
 130         struct vc4_surface *csurf = vc4_surface(vc4->framebuffer.cbufs[0]);
 131         if (csurf) {
 132                 struct vc4_resource *ctex = vc4_resource(csurf->base.texture);
 133                 if (ctex->bo == bo) {
 134                         return true;
 135                 }
 136         }
 137
 138         struct vc4_surface *zsurf = vc4_surface(vc4->framebuffer.zsbuf);
 139         if (zsurf) {
 140                 struct vc4_resource *ztex =
 141                         vc4_resource(zsurf->base.texture);
 142                 if (ztex->bo == bo) {
 143                         return true;
 144                 }
 145         }
 146
 147         return false;
 148 }
 149
 150 static void
 151 vc4_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
 152 {
 153         struct vc4_context *vc4 = vc4_context(pctx);
 154         struct pipe_surface *zsurf = vc4->framebuffer.zsbuf;
 155
 156         if (zsurf && zsurf->texture == prsc)
 157                 vc4->job->resolve &= ~(PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL);
 158 }
 159
 160 static void
 161 vc4_context_destroy(struct pipe_context *pctx)
 162 {
 163         struct vc4_context *vc4 = vc4_context(pctx);
 164
 165         if (vc4->blitter)
 166                 util_blitter_destroy(vc4->blitter);
 167
 168         if (vc4->primconvert)
 169                 util_primconvert_destroy(vc4->primconvert);
 170
 171         if (vc4->uploader)
 172                 u_upload_destroy(vc4->uploader);
 173
 174         slab_destroy(&vc4->transfer_pool);
 175
 176         pipe_surface_reference(&vc4->framebuffer.cbufs[0], NULL);
 177         pipe_surface_reference(&vc4->framebuffer.zsbuf, NULL);
 178
 179         vc4_program_fini(pctx);
 180
 181         ralloc_free(vc4);
 182 }
 183
 184 struct pipe_context *
 185 vc4_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
 186 {
 187         struct vc4_screen *screen = vc4_screen(pscreen);
 188         struct vc4_context *vc4;
 189
 190         /* Prevent dumping of the shaders built during context setup. */
 191         uint32_t saved_shaderdb_flag = vc4_debug & VC4_DEBUG_SHADERDB;
 192         vc4_debug &= ~VC4_DEBUG_SHADERDB;
 193
 194         vc4 = rzalloc(NULL, struct vc4_context);
 195         if (!vc4)
 196                 return NULL;
 197         struct pipe_context *pctx = &vc4->base;
 198
 199         vc4->screen = screen;
 200
 201         pctx->screen = pscreen;
 202         pctx->priv = priv;
 203         pctx->destroy = vc4_context_destroy;
 204         pctx->flush = vc4_pipe_flush;
 205         pctx->invalidate_resource = vc4_invalidate_resource;
 206
 207         vc4_draw_init(pctx);
 208         vc4_state_init(pctx);
 209         vc4_program_init(pctx);
 210         vc4_query_init(pctx);
 211         vc4_resource_context_init(pctx);
 212
 213         vc4->job = rzalloc(vc4, struct vc4_job);
 214         vc4_job_init(vc4->job);
 215
 216         vc4->fd = screen->fd;
 217
 218         slab_create(&vc4->transfer_pool, sizeof(struct vc4_transfer),
 219                          16);
 220         vc4->blitter = util_blitter_create(pctx);
 221         if (!vc4->blitter)
 222                 goto fail;
 223
 224         vc4->primconvert = util_primconvert_create(pctx,
 225                                                    (1 << PIPE_PRIM_QUADS) - 1);
 226         if (!vc4->primconvert)
 227                 goto fail;
 228
 229         vc4->uploader = u_upload_create(pctx, 16 * 1024,
 230                                         PIPE_BIND_INDEX_BUFFER,
 231                                         PIPE_USAGE_STREAM);
 232
 233         vc4_debug |= saved_shaderdb_flag;
 234
 235         vc4->sample_mask = (1 << VC4_MAX_SAMPLES) - 1;
 236
 237         return &vc4->base;
 238
 239 fail:
 240         pctx->destroy(pctx);
 241         return NULL;
 242 }