/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* All Rights Reserved.
*
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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 "util/u_framebuffer.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/u_inlines.h"
#include "util/u_simple_list.h"
#include "util/u_format.h"
#include "lp_scene.h"
#include "lp_fence.h"
#include "lp_debug.h"
#define RESOURCE_REF_SZ 32
/** List of resource references */
struct resource_ref {
struct pipe_resource *resource[RESOURCE_REF_SZ];
int count;
struct resource_ref *next;
};
/**
* Create a new scene object.
* \param queue the queue to put newly rendered/emptied scenes into
*/
struct lp_scene *
lp_scene_create( struct pipe_context *pipe )
{
struct lp_scene *scene = CALLOC_STRUCT(lp_scene);
if (!scene)
return NULL;
scene->pipe = pipe;
scene->data.head =
CALLOC_STRUCT(data_block);
pipe_mutex_init(scene->mutex);
#ifdef DEBUG
/* Do some scene limit sanity checks here */
{
size_t maxBins = TILES_X * TILES_Y;
size_t maxCommandBytes = sizeof(struct cmd_block) * maxBins;
size_t maxCommandPlusData = maxCommandBytes + DATA_BLOCK_SIZE;
/* We'll need at least one command block per bin. Make sure that's
* less than the max allowed scene size.
*/
assert(maxCommandBytes
< LP_SCENE_MAX_SIZE
); /* We'll also need space for at least one other data block */
assert(maxCommandPlusData
<= LP_SCENE_MAX_SIZE
); }
#endif
return scene;
}
/**
* Free all data associated with the given scene, and the scene itself.
*/
void
lp_scene_destroy(struct lp_scene *scene)
{
lp_fence_reference(&scene->fence, NULL);
pipe_mutex_destroy(scene->mutex);
assert(scene
->data.
head->next
== NULL
); FREE(scene->data.head);
FREE(scene);
}
/**
* Check if the scene's bins are all empty.
* For debugging purposes.
*/
boolean
lp_scene_is_empty(struct lp_scene *scene )
{
unsigned x, y;
for (y = 0; y < TILES_Y; y++) {
for (x = 0; x < TILES_X; x++) {
const struct cmd_bin *bin = lp_scene_get_bin(scene, x, y);
if (bin->head) {
return FALSE;
}
}
}
return TRUE;
}
/* Returns true if there has ever been a failed allocation attempt in
* this scene. Used in triangle emit to avoid having to check success
* at each bin.
*/
boolean
lp_scene_is_oom(struct lp_scene *scene)
{
return scene->alloc_failed;
}
/* Remove all commands from a bin. Tries to reuse some of the memory
* allocated to the bin, however.
*/
void
lp_scene_bin_reset(struct lp_scene *scene, unsigned x, unsigned y)
{
struct cmd_bin *bin = lp_scene_get_bin(scene, x, y);
bin->last_state = NULL;
bin->head = bin->tail;
if (bin->tail) {
bin->tail->next = NULL;
bin->tail->count = 0;
}
}
void
lp_scene_begin_rasterization(struct lp_scene *scene)
{
const struct pipe_framebuffer_state *fb = &scene->fb;
int i;
unsigned max_layer = ~0;
//LP_DBG(DEBUG_RAST, "%s\n", __FUNCTION__);
for (i = 0; i < scene->fb.nr_cbufs; i++) {
struct pipe_surface *cbuf = scene->fb.cbufs[i];
if (llvmpipe_resource_is_texture(cbuf->texture)) {
scene->cbufs[i].stride = llvmpipe_resource_stride(cbuf->texture,
cbuf->u.tex.level);
scene->cbufs[i].layer_stride = llvmpipe_layer_stride(cbuf->texture,
cbuf->u.tex.level);
max_layer = MIN2(max_layer, cbuf->u.tex.last_layer - cbuf->u.tex.first_layer);
scene->cbufs[i].map = llvmpipe_resource_map(cbuf->texture,
cbuf->u.tex.level,
cbuf->u.tex.first_layer,
LP_TEX_USAGE_READ_WRITE);
}
else {
struct llvmpipe_resource *lpr = llvmpipe_resource(cbuf->texture);
unsigned pixstride = util_format_get_blocksize(cbuf->format);
scene->cbufs[i].stride = cbuf->texture->width0;
max_layer = 0;
scene->cbufs[i].map = lpr->data;
scene->cbufs[i].map += cbuf->u.buf.first_element * pixstride;
}
}
if (fb->zsbuf) {
struct pipe_surface *zsbuf = scene->fb.zsbuf;
scene->zsbuf.stride = llvmpipe_resource_stride(zsbuf->texture, zsbuf->u.tex.level);
scene->zsbuf.layer_stride = llvmpipe_layer_stride(zsbuf->texture, zsbuf->u.tex.level);
max_layer = MIN2(max_layer, zsbuf->u.tex.last_layer - zsbuf->u.tex.first_layer);
scene->zsbuf.map = llvmpipe_resource_map(zsbuf->texture,
zsbuf->u.tex.level,
zsbuf->u.tex.first_layer,
LP_TEX_USAGE_READ_WRITE);
}
scene->fb_max_layer = max_layer;
}
/**
* Free all the temporary data in a scene.
*/
void
lp_scene_end_rasterization(struct lp_scene *scene )
{
int i, j;
/* Unmap color buffers */
for (i = 0; i < scene->fb.nr_cbufs; i++) {
if (scene->cbufs[i].map) {
struct pipe_surface *cbuf = scene->fb.cbufs[i];
if (llvmpipe_resource_is_texture(cbuf->texture)) {
llvmpipe_resource_unmap(cbuf->texture,
cbuf->u.tex.level,
cbuf->u.tex.first_layer);
}
scene->cbufs[i].map = NULL;
}
}
/* Unmap z/stencil buffer */
if (scene->zsbuf.map) {
struct pipe_surface *zsbuf = scene->fb.zsbuf;
llvmpipe_resource_unmap(zsbuf->texture,
zsbuf->u.tex.level,
zsbuf->u.tex.first_layer);
scene->zsbuf.map = NULL;
}
/* Reset all command lists:
*/
for (i = 0; i < scene->tiles_x; i++) {
for (j = 0; j < scene->tiles_y; j++) {
struct cmd_bin *bin = lp_scene_get_bin(scene, i, j);
bin->head = NULL;
bin->tail = NULL;
bin->last_state = NULL;
}
}
/* If there are any bins which weren't cleared by the loop above,
* they will be caught (on debug builds at least) by this assert:
*/
assert(lp_scene_is_empty
(scene
));
/* Decrement texture ref counts
*/
{
struct resource_ref *ref;
int i, j = 0;
for (ref = scene->resources; ref; ref = ref->next) {
for (i = 0; i < ref->count; i++) {
if (LP_DEBUG & DEBUG_SETUP)
debug_printf("resource %d: %p %dx%d sz %d\n",
j,
(void *) ref->resource[i],
ref->resource[i]->width0,
ref->resource[i]->height0,
llvmpipe_resource_size(ref->resource[i]));
j++;
pipe_resource_reference(&ref->resource[i], NULL);
}
}
if (LP_DEBUG & DEBUG_SETUP)
debug_printf("scene %d resources, sz %d\n",
j, scene->resource_reference_size);
}
/* Free all scene data blocks:
*/
{
struct data_block_list *list = &scene->data;
struct data_block *block, *tmp;
for (block = list->head->next; block; block = tmp) {
tmp = block->next;
FREE(block);
}
list->head->next = NULL;
list->head->used = 0;
}
lp_fence_reference(&scene->fence, NULL);
scene->resources = NULL;
scene->scene_size = 0;
scene->resource_reference_size = 0;
scene->has_depthstencil_clear = FALSE;
scene->alloc_failed = FALSE;
util_unreference_framebuffer_state( &scene->fb );
}
struct cmd_block *
lp_scene_new_cmd_block( struct lp_scene *scene,
struct cmd_bin *bin )
{
struct cmd_block *block = lp_scene_alloc(scene, sizeof(struct cmd_block));
if (block) {
if (bin->tail) {
bin->tail->next = block;
bin->tail = block;
}
else {
bin->head = block;
bin->tail = block;
}
//memset(block, 0, sizeof *block);
block->next = NULL;
block->count = 0;
}
return block;
}
struct data_block *
lp_scene_new_data_block( struct lp_scene *scene )
{
if (scene->scene_size + DATA_BLOCK_SIZE > LP_SCENE_MAX_SIZE) {
if (0) debug_printf("%s: failed\n", __FUNCTION__);
scene->alloc_failed = TRUE;
return NULL;
}
else {
struct data_block *block = MALLOC_STRUCT(data_block);
if (block == NULL)
return NULL;
scene->scene_size += sizeof *block;
block->used = 0;
block->next = scene->data.head;
scene->data.head = block;
return block;
}
}
/**
* Return number of bytes used for all bin data within a scene.
* This does not include resources (textures) referenced by the scene.
*/
static unsigned
lp_scene_data_size( const struct lp_scene *scene )
{
unsigned size = 0;
const struct data_block *block;
for (block = scene->data.head; block; block = block->next) {
size += block->used;
}
return size;
}
/**
* Add a reference to a resource by the scene.
*/
boolean
lp_scene_add_resource_reference(struct lp_scene *scene,
struct pipe_resource *resource,
boolean initializing_scene)
{
struct resource_ref *ref, **last = &scene->resources;
int i;
/* Look at existing resource blocks:
*/
for (ref = scene->resources; ref; ref = ref->next) {
last = &ref->next;
/* Search for this resource:
*/
for (i = 0; i < ref->count; i++)
if (ref->resource[i] == resource)
return TRUE;
if (ref->count < RESOURCE_REF_SZ) {
/* If the block is half-empty, then append the reference here.
*/
break;
}
}
/* Create a new block if no half-empty block was found.
*/
if (!ref) {
*last = lp_scene_alloc(scene, sizeof *ref);
if (*last == NULL)
return FALSE;
ref = *last;
}
/* Append the reference to the reference block.
*/
pipe_resource_reference(&ref->resource[ref->count++], resource);
scene->resource_reference_size += llvmpipe_resource_size(resource);
/* Heuristic to advise scene flushes. This isn't helpful in the
* initial setup of the scene, but after that point flush on the
* next resource added which exceeds 64MB in referenced texture
* data.
*/
if (!initializing_scene &&
scene->resource_reference_size >= LP_SCENE_MAX_RESOURCE_SIZE)
return FALSE;
return TRUE;
}
/**
* Does this scene have a reference to the given resource?
*/
boolean
lp_scene_is_resource_referenced(const struct lp_scene *scene,
const struct pipe_resource *resource)
{
const struct resource_ref *ref;
int i;
for (ref = scene->resources; ref; ref = ref->next) {
for (i = 0; i < ref->count; i++)
if (ref->resource[i] == resource)
return TRUE;
}
return FALSE;
}
/** advance curr_x,y to the next bin */
static boolean
next_bin(struct lp_scene *scene)
{
scene->curr_x++;
if (scene->curr_x >= scene->tiles_x) {
scene->curr_x = 0;
scene->curr_y++;
}
if (scene->curr_y >= scene->tiles_y) {
/* no more bins */
return FALSE;
}
return TRUE;
}
void
lp_scene_bin_iter_begin( struct lp_scene *scene )
{
scene->curr_x = scene->curr_y = -1;
}
/**
* Return pointer to next bin to be rendered.
* The lp_scene::curr_x and ::curr_y fields will be advanced.
* Multiple rendering threads will call this function to get a chunk
* of work (a bin) to work on.
*/
struct cmd_bin *
lp_scene_bin_iter_next( struct lp_scene *scene , int *x, int *y)
{
struct cmd_bin *bin = NULL;
pipe_mutex_lock(scene->mutex);
if (scene->curr_x < 0) {
/* first bin */
scene->curr_x = 0;
scene->curr_y = 0;
}
else if (!next_bin(scene)) {
/* no more bins left */
goto end;
}
bin = lp_scene_get_bin(scene, scene->curr_x, scene->curr_y);
*x = scene->curr_x;
*y = scene->curr_y;
end:
/*printf("return bin %p at %d, %d\n", (void *) bin, *bin_x, *bin_y);*/
pipe_mutex_unlock(scene->mutex);
return bin;
}
void lp_scene_begin_binning( struct lp_scene *scene,
struct pipe_framebuffer_state *fb, boolean discard )
{
assert(lp_scene_is_empty
(scene
));
scene->discard = discard;
util_copy_framebuffer_state(&scene->fb, fb);
scene->tiles_x = align(fb->width, TILE_SIZE) / TILE_SIZE;
scene->tiles_y = align(fb->height, TILE_SIZE) / TILE_SIZE;
assert(scene
->tiles_x
<= TILES_X
); assert(scene
->tiles_y
<= TILES_Y
); }
void lp_scene_end_binning( struct lp_scene *scene )
{
if (LP_DEBUG & DEBUG_SCENE) {
debug_printf("rasterize scene:\n");
debug_printf(" scene_size: %u\n",
scene->scene_size);
debug_printf(" data size: %u\n",
lp_scene_data_size(scene));
if (0)
lp_debug_bins( scene );
}
}