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/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
/*
* Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
*
* 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.
*
* Authors:
* Rob Clark <robclark@freedesktop.org>
*/
#include "freedreno_context.h"
#include "freedreno_draw.h"
#include "freedreno_resource.h"
#include "freedreno_texture.h"
#include "freedreno_state.h"
#include "freedreno_gmem.h"
#include "freedreno_util.h"
/* there are two cases where we currently need to wait for render complete:
* 1) pctx->flush() .. since at the moment we have no way for DDX to sync
* the presentation blit with the 3d core
* 2) wrap-around for ringbuffer.. possibly we can do something more
* Intelligent here. Right now we need to ensure there is enough room
* at the end of the drawcmds in the cmdstream buffer for all the per-
* tile cmds. We do this the lamest way possible, by making the ringbuffer
* big, and flushing and resetting back to the beginning if we get too
* close to the end.
*/
static void
fd_context_wait(struct pipe_context *pctx)
{
struct fd_context *ctx = fd_context(pctx);
uint32_t ts = fd_ringbuffer_timestamp(ctx->ring);
DBG("wait: %u", ts);
fd_pipe_wait(ctx->screen->pipe, ts);
fd_ringbuffer_reset(ctx->ring);
fd_ringmarker_mark(ctx->draw_start);
}
/* emit accumulated render cmds, needed for example if render target has
* changed, or for flush()
*/
void
fd_context_render(struct pipe_context *pctx)
{
struct fd_context *ctx = fd_context(pctx);
struct pipe_framebuffer_state *pfb = &ctx->framebuffer;
DBG("needs_flush: %d", ctx->needs_flush);
if (!ctx->needs_flush)
return;
fd_gmem_render_tiles(pctx);
DBG("%p/%p/%p", ctx->ring->start, ctx->ring->cur, ctx->ring->end);
/* if size in dwords is more than half the buffer size, then wait and
* wrap around:
*/
if ((ctx->ring->cur - ctx->ring->start) > ctx->ring->size/8)
fd_context_wait(pctx);
ctx->needs_flush = false;
ctx->cleared = ctx->restore = ctx->resolve = 0;
fd_resource(pfb->cbufs[0]->texture)->dirty = false;
if (pfb->zsbuf)
fd_resource(pfb->zsbuf->texture)->dirty = false;
}
static void
fd_context_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
unsigned flags)
{
DBG("fence=%p", fence);
#if 0
if (fence) {
fd_fence_ref(ctx->screen->fence.current,
(struct fd_fence **)fence);
}
#endif
fd_context_render(pctx);
}
void
fd_context_destroy(struct pipe_context *pctx)
{
struct fd_context *ctx = fd_context(pctx);
DBG("");
if (ctx->blitter)
util_blitter_destroy(ctx->blitter);
fd_ringmarker_del(ctx->draw_start);
fd_ringmarker_del(ctx->draw_end);
fd_ringbuffer_del(ctx->ring);
FREE(ctx);
}
struct pipe_context *
fd_context_init(struct fd_context *ctx,
struct pipe_screen *pscreen, void *priv)
{
struct fd_screen *screen = fd_screen(pscreen);
struct pipe_context *pctx;
ctx->screen = screen;
/* need some sane default in case state tracker doesn't
* set some state:
*/
ctx->sample_mask = 0xffff;
pctx = &ctx->base;
pctx->screen = pscreen;
pctx->priv = priv;
pctx->flush = fd_context_flush;
ctx->ring = fd_ringbuffer_new(screen->pipe, 0x100000);
if (!ctx->ring)
goto fail;
ctx->draw_start = fd_ringmarker_new(ctx->ring);
ctx->draw_end = fd_ringmarker_new(ctx->ring);
util_slab_create(&ctx->transfer_pool, sizeof(struct pipe_transfer),
16, UTIL_SLAB_SINGLETHREADED);
fd_draw_init(pctx);
fd_resource_context_init(pctx);
fd_texture_init(pctx);
fd_state_init(pctx);
ctx->blitter = util_blitter_create(pctx);
if (!ctx->blitter)
goto fail;
return pctx;
fail:
pctx->destroy(pctx);
return NULL;
}
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