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/*
* Copyright © 2014 Broadcom
*
* 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 <xf86drm.h>
#include <err.h>
#include "pipe/p_defines.h"
#include "util/ralloc.h"
#include "util/u_inlines.h"
#include "util/u_memory.h"
#include "util/u_blitter.h"
#include "util/u_upload_mgr.h"
#include "indices/u_primconvert.h"
#include "pipe/p_screen.h"
#include "vc4_screen.h"
#include "vc4_context.h"
#include "vc4_resource.h"
void
vc4_flush(struct pipe_context *pctx)
{
struct vc4_context *vc4 = vc4_context(pctx);
struct pipe_surface *cbuf = vc4->framebuffer.cbufs[0];
struct pipe_surface *zsbuf = vc4->framebuffer.zsbuf;
if (!vc4->needs_flush)
return;
/* The RCL setup would choke if the draw bounds cause no drawing, so
* just drop the drawing if that's the case.
*/
if (vc4->draw_max_x <= vc4->draw_min_x ||
vc4->draw_max_y <= vc4->draw_min_y) {
vc4_job_reset(vc4);
return;
}
/* Increment the semaphore indicating that binning is done and
* unblocking the render thread. Note that this doesn't act until the
* FLUSH completes.
*/
cl_ensure_space(&vc4->bcl, 8);
struct vc4_cl_out *bcl = cl_start(&vc4->bcl);
cl_u8(&bcl, VC4_PACKET_INCREMENT_SEMAPHORE);
/* The FLUSH caps all of our bin lists with a VC4_PACKET_RETURN. */
cl_u8(&bcl, VC4_PACKET_FLUSH);
cl_end(&vc4->bcl, bcl);
if (cbuf && (vc4->resolve & PIPE_CLEAR_COLOR0)) {
pipe_surface_reference(&vc4->color_write, cbuf);
if (!(vc4->cleared & PIPE_CLEAR_COLOR0)) {
pipe_surface_reference(&vc4->color_read, cbuf);
} else {
pipe_surface_reference(&vc4->color_read, NULL);
}
} else {
pipe_surface_reference(&vc4->color_write, NULL);
pipe_surface_reference(&vc4->color_read, NULL);
}
if (vc4->framebuffer.zsbuf &&
(vc4->resolve & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL))) {
pipe_surface_reference(&vc4->zs_write, zsbuf);
if (!(vc4->cleared & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL))) {
pipe_surface_reference(&vc4->zs_read, zsbuf);
} else {
pipe_surface_reference(&vc4->zs_read, NULL);
}
} else {
pipe_surface_reference(&vc4->zs_write, NULL);
pipe_surface_reference(&vc4->zs_read, NULL);
}
vc4_job_submit(vc4);
}
static void
vc4_pipe_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
unsigned flags)
{
struct vc4_context *vc4 = vc4_context(pctx);
vc4_flush(pctx);
if (fence) {
struct pipe_screen *screen = pctx->screen;
struct vc4_fence *f = vc4_fence_create(vc4->screen,
vc4->last_emit_seqno);
screen->fence_reference(screen, fence, NULL);
*fence = (struct pipe_fence_handle *)f;
}
}
/**
* Flushes the current command lists if they reference the given BO.
*
* This helps avoid flushing the command buffers when unnecessary.
*/
bool
vc4_cl_references_bo(struct pipe_context *pctx, struct vc4_bo *bo)
{
struct vc4_context *vc4 = vc4_context(pctx);
if (!vc4->needs_flush)
return false;
/* Walk all the referenced BOs in the drawing command list to see if
* they match.
*/
struct vc4_bo **referenced_bos = vc4->bo_pointers.base;
for (int i = 0; i < cl_offset(&vc4->bo_handles) / 4; i++) {
if (referenced_bos[i] == bo) {
return true;
}
}
/* Also check for the Z/color buffers, since the references to those
* are only added immediately before submit.
*/
struct vc4_surface *csurf = vc4_surface(vc4->framebuffer.cbufs[0]);
if (csurf) {
struct vc4_resource *ctex = vc4_resource(csurf->base.texture);
if (ctex->bo == bo) {
return true;
}
}
struct vc4_surface *zsurf = vc4_surface(vc4->framebuffer.zsbuf);
if (zsurf) {
struct vc4_resource *ztex =
vc4_resource(zsurf->base.texture);
if (ztex->bo == bo) {
return true;
}
}
return false;
}
static void
vc4_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
{
struct vc4_context *vc4 = vc4_context(pctx);
struct pipe_surface *zsurf = vc4->framebuffer.zsbuf;
if (zsurf && zsurf->texture == prsc)
vc4->resolve &= ~(PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL);
}
static void
vc4_context_destroy(struct pipe_context *pctx)
{
struct vc4_context *vc4 = vc4_context(pctx);
if (vc4->blitter)
util_blitter_destroy(vc4->blitter);
if (vc4->primconvert)
util_primconvert_destroy(vc4->primconvert);
if (vc4->uploader)
u_upload_destroy(vc4->uploader);
util_slab_destroy(&vc4->transfer_pool);
pipe_surface_reference(&vc4->framebuffer.cbufs[0], NULL);
pipe_surface_reference(&vc4->framebuffer.zsbuf, NULL);
vc4_program_fini(pctx);
ralloc_free(vc4);
}
struct pipe_context *
vc4_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
{
struct vc4_screen *screen = vc4_screen(pscreen);
struct vc4_context *vc4;
/* Prevent dumping of the shaders built during context setup. */
uint32_t saved_shaderdb_flag = vc4_debug & VC4_DEBUG_SHADERDB;
vc4_debug &= ~VC4_DEBUG_SHADERDB;
vc4 = rzalloc(NULL, struct vc4_context);
if (vc4 == NULL)
return NULL;
struct pipe_context *pctx = &vc4->base;
vc4->screen = screen;
pctx->screen = pscreen;
pctx->priv = priv;
pctx->destroy = vc4_context_destroy;
pctx->flush = vc4_pipe_flush;
pctx->invalidate_resource = vc4_invalidate_resource;
vc4_draw_init(pctx);
vc4_state_init(pctx);
vc4_program_init(pctx);
vc4_query_init(pctx);
vc4_resource_context_init(pctx);
vc4_job_init(vc4);
vc4->fd = screen->fd;
util_slab_create(&vc4->transfer_pool, sizeof(struct vc4_transfer),
16, UTIL_SLAB_SINGLETHREADED);
vc4->blitter = util_blitter_create(pctx);
if (!vc4->blitter)
goto fail;
vc4->primconvert = util_primconvert_create(pctx,
(1 << PIPE_PRIM_QUADS) - 1);
if (!vc4->primconvert)
goto fail;
vc4->uploader = u_upload_create(pctx, 16 * 1024, 4,
PIPE_BIND_INDEX_BUFFER);
vc4_debug |= saved_shaderdb_flag;
return &vc4->base;
fail:
pctx->destroy(pctx);
return NULL;
}
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