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/*
* Copyright 2018-2019 Alyssa Rosenzweig
*
* 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_context.h"
#include "pan_util.h"
#include "pan_format.h"
#include "util/u_format.h"
/* Mark a surface as written */
static void
panfrost_initialize_surface(struct pipe_surface *surf)
{
unsigned level = surf->u.tex.level;
struct panfrost_resource *rsrc = pan_resource(surf->texture);
rsrc->slices[level].initialized = true;
}
/* Generate a fragment job. This should be called once per frame. (According to
* presentations, this is supposed to correspond to eglSwapBuffers) */
mali_ptr
panfrost_fragment_job(struct panfrost_context *ctx, bool has_draws)
{
mali_ptr framebuffer = ctx->require_sfbd ?
panfrost_sfbd_fragment(ctx, has_draws) :
panfrost_mfbd_fragment(ctx, has_draws);
/* Mark the affected buffers as initialized, since we're writing to it */
struct pipe_framebuffer_state *fb = &ctx->pipe_framebuffer;
for (unsigned i = 0; i < fb->nr_cbufs; ++i) {
panfrost_initialize_surface(fb->cbufs[i]);
}
if (fb->zsbuf)
panfrost_initialize_surface(fb->zsbuf);
struct mali_job_descriptor_header header = {
.job_type = JOB_TYPE_FRAGMENT,
.job_index = 1,
#ifdef __LP64__
.job_descriptor_size = 1
#endif
};
struct panfrost_job *job = panfrost_get_job_for_fbo(ctx);
/* The passed tile coords can be out of range in some cases, so we need
* to clamp them to the framebuffer size to avoid a TILE_RANGE_FAULT.
* Theoretically we also need to clamp the coordinates positive, but we
* avoid that edge case as all four values are unsigned. Also,
* theoretically we could clamp the minima, but if that has to happen
* the asserts would fail anyway (since the maxima would get clamped
* and then be smaller than the minima). An edge case of sorts occurs
* when no scissors are added to draw, so by default min=~0 and max=0.
* But that can't happen if any actual drawing occurs (beyond a
* wallpaper reload), so this is again irrelevant in practice. */
job->maxx = MIN2(job->maxx, fb->width);
job->maxy = MIN2(job->maxy, fb->height);
/* Rendering region must be at least 1x1; otherwise, there is nothing
* to do and the whole job chain should have been discarded. */
assert(job->maxx > job->minx);
assert(job->maxy > job->miny);
struct mali_payload_fragment payload = {
.min_tile_coord = MALI_COORDINATE_TO_TILE_MIN(job->minx, job->miny),
.max_tile_coord = MALI_COORDINATE_TO_TILE_MAX(job->maxx, job->maxy),
.framebuffer = framebuffer,
};
/* Normally, there should be no padding. However, fragment jobs are
* shared with 64-bit Bifrost systems, and accordingly there is 4-bytes
* of zero padding in between. */
struct panfrost_transfer transfer = panfrost_allocate_transient(ctx, sizeof(header) + sizeof(payload));
memcpy(transfer.cpu, &header, sizeof(header));
memcpy(transfer.cpu + sizeof(header), &payload, sizeof(payload));
return transfer.gpu;
}
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