* executing anything. The chances are fairly high that they will use
* blorp at least once per primary command buffer so it shouldn't be
* wasted.
+ *
+ * There is also a workaround on gen8 which requires us to invalidate the
+ * VF cache occasionally. It's easier if we can assume we start with a
+ * fresh cache (See also genX(cmd_buffer_set_binding_for_gen8_vb_flush).)
*/
cmd_buffer->state.pending_pipe_bits |= ANV_PIPE_VF_CACHE_INVALIDATE_BIT;
anv_cmd_buffer_add_secondary(primary, secondary);
}
+ /* The secondary isn't counted in our VF cache tracking so we need to
+ * invalidate the whole thing.
+ */
+ if (GEN_GEN >= 8 && GEN_GEN <= 9) {
+ primary->state.pending_pipe_bits |=
+ ANV_PIPE_CS_STALL_BIT | ANV_PIPE_VF_CACHE_INVALIDATE_BIT;
+ }
+
/* The secondary may have selected a different pipeline (3D or compute) and
* may have changed the current L3$ configuration. Reset our tracking
* variables to invalid values to ensure that we re-emit these in the case
bits |= ANV_PIPE_TILE_CACHE_FLUSH_BIT;
}
+ if ((GEN_GEN >= 8 && GEN_GEN <= 9) &&
+ (bits & ANV_PIPE_CS_STALL_BIT) &&
+ (bits & ANV_PIPE_VF_CACHE_INVALIDATE_BIT)) {
+ /* If we are doing a VF cache invalidate AND a CS stall (it must be
+ * both) then we can reset our vertex cache tracking.
+ */
+ memset(cmd_buffer->state.gfx.vb_dirty_ranges, 0,
+ sizeof(cmd_buffer->state.gfx.vb_dirty_ranges));
+ memset(&cmd_buffer->state.gfx.ib_dirty_range, 0,
+ sizeof(cmd_buffer->state.gfx.ib_dirty_range));
+ }
+
if (bits & (ANV_PIPE_FLUSH_BITS | ANV_PIPE_CS_STALL_BIT)) {
anv_batch_emit(&cmd_buffer->batch, GENX(PIPE_CONTROL), pipe) {
#if GEN_GEN >= 12
#endif
};
+#if GEN_GEN >= 8 && GEN_GEN <= 9
+ genX(cmd_buffer_set_binding_for_gen8_vb_flush)(cmd_buffer, vb,
+ state.BufferStartingAddress,
+ state.BufferSize);
+#endif
+
GENX(VERTEX_BUFFER_STATE_pack)(&cmd_buffer->batch, &p[1 + i * 4], &state);
i++;
}
.EndAddress = anv_address_add(addr, size),
#endif
});
+
+ genX(cmd_buffer_set_binding_for_gen8_vb_flush)(cmd_buffer,
+ index, addr, size);
}
static void
emit_vertex_bo(cmd_buffer, addr, 4, ANV_DRAWID_VB_INDEX);
}
+static void
+update_dirty_vbs_for_gen8_vb_flush(struct anv_cmd_buffer *cmd_buffer,
+ uint32_t access_type)
+{
+ struct anv_pipeline *pipeline = cmd_buffer->state.gfx.base.pipeline;
+ const struct brw_vs_prog_data *vs_prog_data = get_vs_prog_data(pipeline);
+
+ uint64_t vb_used = pipeline->vb_used;
+ if (vs_prog_data->uses_firstvertex ||
+ vs_prog_data->uses_baseinstance)
+ vb_used |= 1ull << ANV_SVGS_VB_INDEX;
+ if (vs_prog_data->uses_drawid)
+ vb_used |= 1ull << ANV_DRAWID_VB_INDEX;
+
+ genX(cmd_buffer_update_dirty_vbs_for_gen8_vb_flush)(cmd_buffer,
+ access_type == RANDOM,
+ vb_used);
+}
+
void genX(CmdDraw)(
VkCommandBuffer commandBuffer,
uint32_t vertexCount,
prim.StartInstanceLocation = firstInstance;
prim.BaseVertexLocation = 0;
}
+
+ update_dirty_vbs_for_gen8_vb_flush(cmd_buffer, SEQUENTIAL);
}
void genX(CmdDrawIndexed)(
prim.StartInstanceLocation = firstInstance;
prim.BaseVertexLocation = vertexOffset;
}
+
+ update_dirty_vbs_for_gen8_vb_flush(cmd_buffer, RANDOM);
}
/* Auto-Draw / Indirect Registers */
prim.VertexAccessType = SEQUENTIAL;
prim.PrimitiveTopologyType = pipeline->topology;
}
+
+ update_dirty_vbs_for_gen8_vb_flush(cmd_buffer, SEQUENTIAL);
#endif /* GEN_IS_HASWELL || GEN_GEN >= 8 */
}
prim.PrimitiveTopologyType = pipeline->topology;
}
+ update_dirty_vbs_for_gen8_vb_flush(cmd_buffer, SEQUENTIAL);
+
offset += stride;
}
}
prim.PrimitiveTopologyType = pipeline->topology;
}
+ update_dirty_vbs_for_gen8_vb_flush(cmd_buffer, RANDOM);
+
offset += stride;
}
}
prim.PrimitiveTopologyType = pipeline->topology;
}
+ update_dirty_vbs_for_gen8_vb_flush(cmd_buffer, SEQUENTIAL);
+
offset += stride;
}
}
prim.PrimitiveTopologyType = pipeline->topology;
}
+ update_dirty_vbs_for_gen8_vb_flush(cmd_buffer, RANDOM);
+
offset += stride;
}
}
}
}
+/* From the Skylake PRM, 3DSTATE_VERTEX_BUFFERS:
+ *
+ * "The VF cache needs to be invalidated before binding and then using
+ * Vertex Buffers that overlap with any previously bound Vertex Buffer
+ * (at a 64B granularity) since the last invalidation. A VF cache
+ * invalidate is performed by setting the "VF Cache Invalidation Enable"
+ * bit in PIPE_CONTROL."
+ *
+ * This is implemented by carefully tracking all vertex and index buffer
+ * bindings and flushing if the cache ever ends up with a range in the cache
+ * that would exceed 4 GiB. This is implemented in three parts:
+ *
+ * 1. genX(cmd_buffer_set_binding_for_gen8_vb_flush)() which must be called
+ * every time a 3DSTATE_VERTEX_BUFFER packet is emitted and informs the
+ * tracking code of the new binding. If this new binding would cause
+ * the cache to have a too-large range on the next draw call, a pipeline
+ * stall and VF cache invalidate are added to pending_pipeline_bits.
+ *
+ * 2. genX(cmd_buffer_apply_pipe_flushes)() resets the cache tracking to
+ * empty whenever we emit a VF invalidate.
+ *
+ * 3. genX(cmd_buffer_update_dirty_vbs_for_gen8_vb_flush)() must be called
+ * after every 3DPRIMITIVE and copies the bound range into the dirty
+ * range for each used buffer. This has to be a separate step because
+ * we don't always re-bind all buffers and so 1. can't know which
+ * buffers are actually bound.
+ */
+void
+genX(cmd_buffer_set_binding_for_gen8_vb_flush)(struct anv_cmd_buffer *cmd_buffer,
+ int vb_index,
+ struct anv_address vb_address,
+ uint32_t vb_size)
+{
+ if (GEN_GEN < 8 || GEN_GEN > 9 ||
+ !cmd_buffer->device->instance->physicalDevice.use_softpin)
+ return;
+
+ struct anv_vb_cache_range *bound, *dirty;
+ if (vb_index == -1) {
+ bound = &cmd_buffer->state.gfx.ib_bound_range;
+ dirty = &cmd_buffer->state.gfx.ib_dirty_range;
+ } else {
+ assert(vb_index >= 0);
+ assert(vb_index < ARRAY_SIZE(cmd_buffer->state.gfx.vb_bound_ranges));
+ assert(vb_index < ARRAY_SIZE(cmd_buffer->state.gfx.vb_dirty_ranges));
+ bound = &cmd_buffer->state.gfx.vb_bound_ranges[vb_index];
+ dirty = &cmd_buffer->state.gfx.vb_dirty_ranges[vb_index];
+ }
+
+ if (vb_size == 0) {
+ bound->start = 0;
+ bound->end = 0;
+ return;
+ }
+
+ assert(vb_address.bo && (vb_address.bo->flags & EXEC_OBJECT_PINNED));
+ bound->start = gen_48b_address(anv_address_physical(vb_address));
+ bound->end = bound->start + vb_size;
+ assert(bound->end > bound->start); /* No overflow */
+
+ /* Align everything to a cache line */
+ bound->start &= ~(64ull - 1ull);
+ bound->end = align_u64(bound->end, 64);
+
+ /* Compute the dirty range */
+ dirty->start = MIN2(dirty->start, bound->start);
+ dirty->end = MAX2(dirty->end, bound->end);
+
+ /* If our range is larger than 32 bits, we have to flush */
+ assert(bound->end - bound->start <= (1ull << 32));
+ if (dirty->end - dirty->start > (1ull << 32)) {
+ cmd_buffer->state.pending_pipe_bits |=
+ ANV_PIPE_CS_STALL_BIT | ANV_PIPE_VF_CACHE_INVALIDATE_BIT;
+ }
+}
+
+void
+genX(cmd_buffer_update_dirty_vbs_for_gen8_vb_flush)(struct anv_cmd_buffer *cmd_buffer,
+ uint32_t access_type,
+ uint64_t vb_used)
+{
+ if (GEN_GEN < 8 || GEN_GEN > 9 ||
+ !cmd_buffer->device->instance->physicalDevice.use_softpin)
+ return;
+
+ if (access_type == RANDOM) {
+ /* We have an index buffer */
+ struct anv_vb_cache_range *bound = &cmd_buffer->state.gfx.ib_bound_range;
+ struct anv_vb_cache_range *dirty = &cmd_buffer->state.gfx.ib_dirty_range;
+
+ if (bound->end > bound->start) {
+ dirty->start = MIN2(dirty->start, bound->start);
+ dirty->end = MAX2(dirty->end, bound->end);
+ }
+ }
+
+ uint64_t mask = vb_used;
+ while (mask) {
+ int i = u_bit_scan64(&mask);
+ assert(i >= 0);
+ assert(i < ARRAY_SIZE(cmd_buffer->state.gfx.vb_bound_ranges));
+ assert(i < ARRAY_SIZE(cmd_buffer->state.gfx.vb_dirty_ranges));
+
+ struct anv_vb_cache_range *bound, *dirty;
+ bound = &cmd_buffer->state.gfx.vb_bound_ranges[i];
+ dirty = &cmd_buffer->state.gfx.vb_dirty_ranges[i];
+
+ if (bound->end > bound->start) {
+ dirty->start = MIN2(dirty->start, bound->start);
+ dirty->end = MAX2(dirty->end, bound->end);
+ }
+ }
+}
+
/**
* Update the pixel hashing modes that determine the balancing of PS threads
* across subslices and slices.
projects / mesa.git / commitdiff