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/*
* Copyright (C) 2018-2019 Alyssa Rosenzweig
* Copyright (C) 2019 Collabora, Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include "pan_bo.h"
#include "pan_context.h"
void
panfrost_emit_vertex_data(struct panfrost_batch *batch)
{
struct panfrost_context *ctx = batch->ctx;
struct panfrost_vertex_state *so = ctx->vertex;
/* Staged mali_attr, and index into them. i =/= k, depending on the
* vertex buffer mask and instancing. Twice as much room is allocated,
* for a worst case of NPOT_DIVIDEs which take up extra slot */
union mali_attr attrs[PIPE_MAX_ATTRIBS * 2];
unsigned k = 0;
for (unsigned i = 0; i < so->num_elements; ++i) {
/* We map a mali_attr to be 1:1 with the mali_attr_meta, which
* means duplicating some vertex buffers (who cares? aside from
* maybe some caching implications but I somehow doubt that
* matters) */
struct pipe_vertex_element *elem = &so->pipe[i];
unsigned vbi = elem->vertex_buffer_index;
/* The exception to 1:1 mapping is that we can have multiple
* entries (NPOT divisors), so we fixup anyways */
so->hw[i].index = k;
if (!(ctx->vb_mask & (1 << vbi))) continue;
struct pipe_vertex_buffer *buf = &ctx->vertex_buffers[vbi];
struct panfrost_resource *rsrc = (struct panfrost_resource *) (buf->buffer.resource);
if (!rsrc) continue;
/* Align to 64 bytes by masking off the lower bits. This
* will be adjusted back when we fixup the src_offset in
* mali_attr_meta */
mali_ptr raw_addr = rsrc->bo->gpu + buf->buffer_offset;
mali_ptr addr = raw_addr & ~63;
unsigned chopped_addr = raw_addr - addr;
/* Add a dependency of the batch on the vertex buffer */
panfrost_batch_add_bo(batch, rsrc->bo,
PAN_BO_ACCESS_SHARED |
PAN_BO_ACCESS_READ |
PAN_BO_ACCESS_VERTEX_TILER);
/* Set common fields */
attrs[k].elements = addr;
attrs[k].stride = buf->stride;
/* Since we advanced the base pointer, we shrink the buffer
* size */
attrs[k].size = rsrc->base.width0 - buf->buffer_offset;
/* We need to add the extra size we masked off (for
* correctness) so the data doesn't get clamped away */
attrs[k].size += chopped_addr;
/* For non-instancing make sure we initialize */
attrs[k].shift = attrs[k].extra_flags = 0;
/* Instancing uses a dramatically different code path than
* linear, so dispatch for the actual emission now that the
* common code is finished */
unsigned divisor = elem->instance_divisor;
if (divisor && ctx->instance_count == 1) {
/* Silly corner case where there's a divisor(=1) but
* there's no legitimate instancing. So we want *every*
* attribute to be the same. So set stride to zero so
* we don't go anywhere. */
attrs[k].size = attrs[k].stride + chopped_addr;
attrs[k].stride = 0;
attrs[k++].elements |= MALI_ATTR_LINEAR;
} else if (ctx->instance_count <= 1) {
/* Normal, non-instanced attributes */
attrs[k++].elements |= MALI_ATTR_LINEAR;
} else {
unsigned instance_shift = batch->ctx->payloads[PIPE_SHADER_FRAGMENT].instance_shift;
unsigned instance_odd = batch->ctx->payloads[PIPE_SHADER_FRAGMENT].instance_odd;
k += panfrost_vertex_instanced(batch->ctx->padded_count,
instance_shift, instance_odd, divisor, &attrs[k]);
}
}
/* Add special gl_VertexID/gl_InstanceID buffers */
panfrost_vertex_id(ctx->padded_count, &attrs[k]);
so->hw[PAN_VERTEX_ID].index = k++;
panfrost_instance_id(ctx->padded_count, &attrs[k]);
so->hw[PAN_INSTANCE_ID].index = k++;
/* Upload whatever we emitted and go */
ctx->payloads[PIPE_SHADER_VERTEX].postfix.attributes =
panfrost_upload_transient(batch, attrs, k * sizeof(union mali_attr));
}
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