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c88f3e0374620f18cf38d9fc3c45d14bc53f62b2
third_party_mesa3d/src/gallium/drivers/llvmpipe/lp_texture.c
José Fonseca c88f3e0374 llvmpipe: Make more resilient to out-of-memory situations. 
Most of the code was alright, but we were missing a few paths.

Reviewed-by: Brian Paul <brianp@vmware.com>
2011-11-14 10:06:01 +00:00

1432 lines
43 KiB
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/**************************************************************************
*
* Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
* Michel Dänzer <michel@tungstengraphics.com>
*/
#include <stdio.h>
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "util/u_cpu_detect.h"
#include "util/u_format.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/u_simple_list.h"
#include "util/u_transfer.h"
#include "lp_context.h"
#include "lp_flush.h"
#include "lp_screen.h"
#include "lp_tile_image.h"
#include "lp_texture.h"
#include "lp_setup.h"
#include "lp_state.h"
#include "state_tracker/sw_winsys.h"
#ifdef DEBUG
static struct llvmpipe_resource resource_list;
#endif
static unsigned id_counter = 0;
static INLINE boolean
resource_is_texture(const struct pipe_resource *resource)
{
switch (resource->target) {
case PIPE_BUFFER:
return FALSE;
case PIPE_TEXTURE_1D:
case PIPE_TEXTURE_2D:
case PIPE_TEXTURE_RECT:
case PIPE_TEXTURE_3D:
case PIPE_TEXTURE_CUBE:
return TRUE;
default:
assert(0);
return FALSE;
}
}
/**
* Allocate storage for llvmpipe_texture::layout array.
* The number of elements is width_in_tiles * height_in_tiles.
*/
static enum lp_texture_layout *
alloc_layout_array(unsigned num_slices, unsigned width, unsigned height)
{
const unsigned tx = align(width, TILE_SIZE) / TILE_SIZE;
const unsigned ty = align(height, TILE_SIZE) / TILE_SIZE;
assert(num_slices * tx * ty > 0);
assert(LP_TEX_LAYOUT_NONE == 0); /* calloc'ing LP_TEX_LAYOUT_NONE here */
return (enum lp_texture_layout *)
CALLOC(num_slices * tx * ty, sizeof(enum lp_texture_layout));
}
/**
* Conventional allocation path for non-display textures:
* Just compute row strides here. Storage is allocated on demand later.
*/
static boolean
llvmpipe_texture_layout(struct llvmpipe_screen *screen,
struct llvmpipe_resource *lpr)
{
struct pipe_resource *pt = &lpr->base;
unsigned level;
unsigned width = pt->width0;
unsigned height = pt->height0;
unsigned depth = pt->depth0;
assert(LP_MAX_TEXTURE_2D_LEVELS <= LP_MAX_TEXTURE_LEVELS);
assert(LP_MAX_TEXTURE_3D_LEVELS <= LP_MAX_TEXTURE_LEVELS);
for (level = 0; level <= pt->last_level; level++) {
/* Row stride and image stride (for linear layout) */
{
unsigned alignment, nblocksx, nblocksy, block_size;
/* For non-compressed formats we need to align the texture size
* to the tile size to facilitate render-to-texture.
*/
if (util_format_is_compressed(pt->format))
alignment = 1;
else
alignment = TILE_SIZE;
nblocksx = util_format_get_nblocksx(pt->format,
align(width, alignment));
nblocksy = util_format_get_nblocksy(pt->format,
align(height, alignment));
block_size = util_format_get_blocksize(pt->format);
lpr->row_stride[level] = align(nblocksx * block_size, 16);
lpr->img_stride[level] = lpr->row_stride[level] * nblocksy;
}
/* Size of the image in tiles (for tiled layout) */
{
const unsigned width_t = align(width, TILE_SIZE) / TILE_SIZE;
const unsigned height_t = align(height, TILE_SIZE) / TILE_SIZE;
lpr->tiles_per_row[level] = width_t;
lpr->tiles_per_image[level] = width_t * height_t;
}
/* Number of 3D image slices or cube faces */
{
unsigned num_slices;
if (lpr->base.target == PIPE_TEXTURE_CUBE)
num_slices = 6;
else if (lpr->base.target == PIPE_TEXTURE_3D)
num_slices = depth;
else
num_slices = 1;
lpr->num_slices_faces[level] = num_slices;
lpr->layout[level] = alloc_layout_array(num_slices, width, height);
if (!lpr->layout[level]) {
goto fail;
}
}
/* Compute size of next mipmap level */
width = u_minify(width, 1);
height = u_minify(height, 1);
depth = u_minify(depth, 1);
}
return TRUE;
fail:
for (level = 0; level <= pt->last_level; level++) {
if (lpr->layout[level]) {
FREE(lpr->layout[level]);
}
}
return FALSE;
}
static boolean
llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen,
struct llvmpipe_resource *lpr)
{
struct sw_winsys *winsys = screen->winsys;
/* Round up the surface size to a multiple of the tile size to
* avoid tile clipping.
*/
const unsigned width = align(lpr->base.width0, TILE_SIZE);
const unsigned height = align(lpr->base.height0, TILE_SIZE);
const unsigned width_t = width / TILE_SIZE;
const unsigned height_t = height / TILE_SIZE;
lpr->tiles_per_row[0] = width_t;
lpr->tiles_per_image[0] = width_t * height_t;
lpr->num_slices_faces[0] = 1;
lpr->img_stride[0] = 0;
lpr->layout[0] = alloc_layout_array(1, width, height);
if (!lpr->layout[0]) {
return FALSE;
}
lpr->dt = winsys->displaytarget_create(winsys,
lpr->base.bind,
lpr->base.format,
width, height,
16,
&lpr->row_stride[0] );
return lpr->dt != NULL;
}
static struct pipe_resource *
llvmpipe_resource_create(struct pipe_screen *_screen,
const struct pipe_resource *templat)
{
struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
struct llvmpipe_resource *lpr = CALLOC_STRUCT(llvmpipe_resource);
if (!lpr)
return NULL;
lpr->base = *templat;
pipe_reference_init(&lpr->base.reference, 1);
lpr->base.screen = &screen->base;
/* assert(lpr->base.bind); */
if (resource_is_texture(&lpr->base)) {
if (lpr->base.bind & PIPE_BIND_DISPLAY_TARGET) {
/* displayable surface */
if (!llvmpipe_displaytarget_layout(screen, lpr))
goto fail;
assert(lpr->layout[0][0] == LP_TEX_LAYOUT_NONE);
}
else {
/* texture map */
if (!llvmpipe_texture_layout(screen, lpr))
goto fail;
assert(lpr->layout[0][0] == LP_TEX_LAYOUT_NONE);
}
assert(lpr->layout[0]);
}
else {
/* other data (vertex buffer, const buffer, etc) */
const enum pipe_format format = templat->format;
const uint w = templat->width0 / util_format_get_blockheight(format);
/* XXX buffers should only have one dimension, those values should be 1 */
const uint h = templat->height0 / util_format_get_blockwidth(format);
const uint d = templat->depth0;
const uint bpp = util_format_get_blocksize(format);
const uint bytes = w * h * d * bpp;
lpr->data = align_malloc(bytes, 16);
if (!lpr->data)
goto fail;
}
lpr->id = id_counter++;
#ifdef DEBUG
insert_at_tail(&resource_list, lpr);
#endif
return &lpr->base;
fail:
FREE(lpr);
return NULL;
}
static void
llvmpipe_resource_destroy(struct pipe_screen *pscreen,
struct pipe_resource *pt)
{
struct llvmpipe_screen *screen = llvmpipe_screen(pscreen);
struct llvmpipe_resource *lpr = llvmpipe_resource(pt);
if (lpr->dt) {
/* display target */
struct sw_winsys *winsys = screen->winsys;
winsys->displaytarget_destroy(winsys, lpr->dt);
if (lpr->tiled[0].data) {
align_free(lpr->tiled[0].data);
lpr->tiled[0].data = NULL;
}
FREE(lpr->layout[0]);
}
else if (resource_is_texture(pt)) {
/* regular texture */
uint level;
/* free linear image data */
for (level = 0; level < Elements(lpr->linear); level++) {
if (lpr->linear[level].data) {
align_free(lpr->linear[level].data);
lpr->linear[level].data = NULL;
}
}
/* free tiled image data */
for (level = 0; level < Elements(lpr->tiled); level++) {
if (lpr->tiled[level].data) {
align_free(lpr->tiled[level].data);
lpr->tiled[level].data = NULL;
}
}
/* free layout flag arrays */
for (level = 0; level < Elements(lpr->tiled); level++) {
FREE(lpr->layout[level]);
lpr->layout[level] = NULL;
}
}
else if (!lpr->userBuffer) {
assert(lpr->data);
align_free(lpr->data);
}
#ifdef DEBUG
if (lpr->next)
remove_from_list(lpr);
#endif
FREE(lpr);
}
/**
* Map a resource for read/write.
*/
void *
llvmpipe_resource_map(struct pipe_resource *resource,
unsigned level,
unsigned layer,
enum lp_texture_usage tex_usage,
enum lp_texture_layout layout)
{
struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
uint8_t *map;
assert(level < LP_MAX_TEXTURE_LEVELS);
assert(layer < (u_minify(resource->depth0, level) + resource->array_size - 1));
assert(tex_usage == LP_TEX_USAGE_READ ||
tex_usage == LP_TEX_USAGE_READ_WRITE ||
tex_usage == LP_TEX_USAGE_WRITE_ALL);
assert(layout == LP_TEX_LAYOUT_NONE ||
layout == LP_TEX_LAYOUT_TILED ||
layout == LP_TEX_LAYOUT_LINEAR);
if (lpr->dt) {
/* display target */
struct llvmpipe_screen *screen = llvmpipe_screen(resource->screen);
struct sw_winsys *winsys = screen->winsys;
unsigned dt_usage;
uint8_t *map2;
if (tex_usage == LP_TEX_USAGE_READ) {
dt_usage = PIPE_TRANSFER_READ;
}
else {
dt_usage = PIPE_TRANSFER_READ_WRITE;
}
assert(level == 0);
assert(layer == 0);
/* FIXME: keep map count? */
map = winsys->displaytarget_map(winsys, lpr->dt, dt_usage);
/* install this linear image in texture data structure */
lpr->linear[level].data = map;
/* make sure tiled data gets converted to linear data */
map2 = llvmpipe_get_texture_image(lpr, 0, 0, tex_usage, layout);
if (layout == LP_TEX_LAYOUT_LINEAR)
assert(map == map2);
return map2;
}
else if (resource_is_texture(resource)) {
map = llvmpipe_get_texture_image(lpr, layer, level,
tex_usage, layout);
return map;
}
else {
return lpr->data;
}
}
/**
* Unmap a resource.
*/
void
llvmpipe_resource_unmap(struct pipe_resource *resource,
unsigned level,
unsigned layer)
{
struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
if (lpr->dt) {
/* display target */
struct llvmpipe_screen *lp_screen = llvmpipe_screen(resource->screen);
struct sw_winsys *winsys = lp_screen->winsys;
assert(level == 0);
assert(layer == 0);
/* make sure linear image is up to date */
(void) llvmpipe_get_texture_image(lpr, layer, level,
LP_TEX_USAGE_READ,
LP_TEX_LAYOUT_LINEAR);
winsys->displaytarget_unmap(winsys, lpr->dt);
}
}
void *
llvmpipe_resource_data(struct pipe_resource *resource)
{
struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
assert(!resource_is_texture(resource));
return lpr->data;
}
static struct pipe_resource *
llvmpipe_resource_from_handle(struct pipe_screen *screen,
const struct pipe_resource *template,
struct winsys_handle *whandle)
{
struct sw_winsys *winsys = llvmpipe_screen(screen)->winsys;
struct llvmpipe_resource *lpr;
unsigned width, height, width_t, height_t;
/* XXX Seems like from_handled depth textures doesn't work that well */
lpr = CALLOC_STRUCT(llvmpipe_resource);
if (!lpr) {
goto no_lpr;
}
lpr->base = *template;
pipe_reference_init(&lpr->base.reference, 1);
lpr->base.screen = screen;
width = align(lpr->base.width0, TILE_SIZE);
height = align(lpr->base.height0, TILE_SIZE);
width_t = width / TILE_SIZE;
height_t = height / TILE_SIZE;
/*
* Looks like unaligned displaytargets work just fine,
* at least sampler/render ones.
*/
#if 0
assert(lpr->base.width0 == width);
assert(lpr->base.height0 == height);
#endif
lpr->tiles_per_row[0] = width_t;
lpr->tiles_per_image[0] = width_t * height_t;
lpr->num_slices_faces[0] = 1;
lpr->img_stride[0] = 0;
lpr->dt = winsys->displaytarget_from_handle(winsys,
template,
whandle,
&lpr->row_stride[0]);
if (!lpr->dt) {
goto no_dt;
}
lpr->layout[0] = alloc_layout_array(1, lpr->base.width0, lpr->base.height0);
if (!lpr->layout[0]) {
goto no_layout_0;
}
assert(lpr->layout[0][0] == LP_TEX_LAYOUT_NONE);
lpr->id = id_counter++;
#ifdef DEBUG
insert_at_tail(&resource_list, lpr);
#endif
return &lpr->base;
no_layout_0:
winsys->displaytarget_destroy(winsys, lpr->dt);
no_dt:
FREE(lpr);
no_lpr:
return NULL;
}
static boolean
llvmpipe_resource_get_handle(struct pipe_screen *screen,
struct pipe_resource *pt,
struct winsys_handle *whandle)
{
struct sw_winsys *winsys = llvmpipe_screen(screen)->winsys;
struct llvmpipe_resource *lpr = llvmpipe_resource(pt);
assert(lpr->dt);
if (!lpr->dt)
return FALSE;
return winsys->displaytarget_get_handle(winsys, lpr->dt, whandle);
}
static struct pipe_surface *
llvmpipe_create_surface(struct pipe_context *pipe,
struct pipe_resource *pt,
const struct pipe_surface *surf_tmpl)
{
struct pipe_surface *ps;
assert(surf_tmpl->u.tex.level <= pt->last_level);
ps = CALLOC_STRUCT(pipe_surface);
if (ps) {
pipe_reference_init(&ps->reference, 1);
pipe_resource_reference(&ps->texture, pt);
ps->context = pipe;
ps->format = surf_tmpl->format;
ps->width = u_minify(pt->width0, surf_tmpl->u.tex.level);
ps->height = u_minify(pt->height0, surf_tmpl->u.tex.level);
ps->usage = surf_tmpl->usage;
ps->u.tex.level = surf_tmpl->u.tex.level;
ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
}
return ps;
}
static void
llvmpipe_surface_destroy(struct pipe_context *pipe,
struct pipe_surface *surf)
{
/* Effectively do the texture_update work here - if texture images
* needed post-processing to put them into hardware layout, this is
* where it would happen. For llvmpipe, nothing to do.
*/
assert(surf->texture);
pipe_resource_reference(&surf->texture, NULL);
FREE(surf);
}
static struct pipe_transfer *
llvmpipe_get_transfer(struct pipe_context *pipe,
struct pipe_resource *resource,
unsigned level,
unsigned usage,
const struct pipe_box *box)
{
struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
struct llvmpipe_resource *lprex = llvmpipe_resource(resource);
struct llvmpipe_transfer *lpr;
assert(resource);
assert(level <= resource->last_level);
/*
* Transfers, like other pipe operations, must happen in order, so flush the
* context if necessary.
*/
if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
boolean read_only = !(usage & PIPE_TRANSFER_WRITE);
boolean do_not_block = !!(usage & PIPE_TRANSFER_DONTBLOCK);
if (!llvmpipe_flush_resource(pipe, resource,
level,
box->depth > 1 ? -1 : box->z,
read_only,
TRUE, /* cpu_access */
do_not_block,
__FUNCTION__)) {
/*
* It would have blocked, but state tracker requested no to.
*/
assert(do_not_block);
return NULL;
}
}
if (resource == llvmpipe->constants[PIPE_SHADER_FRAGMENT][0])
llvmpipe->dirty |= LP_NEW_CONSTANTS;
lpr = CALLOC_STRUCT(llvmpipe_transfer);
if (lpr) {
struct pipe_transfer *pt = &lpr->base;
pipe_resource_reference(&pt->resource, resource);
pt->box = *box;
pt->level = level;
pt->stride = lprex->row_stride[level];
pt->layer_stride = lprex->img_stride[level];
pt->usage = usage;
return pt;
}
return NULL;
}
static void
llvmpipe_transfer_destroy(struct pipe_context *pipe,
struct pipe_transfer *transfer)
{
/* Effectively do the texture_update work here - if texture images
* needed post-processing to put them into hardware layout, this is
* where it would happen. For llvmpipe, nothing to do.
*/
assert (transfer->resource);
pipe_resource_reference(&transfer->resource, NULL);
FREE(transfer);
}
static void *
llvmpipe_transfer_map( struct pipe_context *pipe,
struct pipe_transfer *transfer )
{
struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
ubyte *map;
struct llvmpipe_resource *lpr;
enum pipe_format format;
enum lp_texture_usage tex_usage;
const char *mode;
assert(transfer->level < LP_MAX_TEXTURE_LEVELS);
/*
printf("tex_transfer_map(%d, %d %d x %d of %d x %d, usage %d )\n",
transfer->x, transfer->y, transfer->width, transfer->height,
transfer->texture->width0,
transfer->texture->height0,
transfer->usage);
*/
if (transfer->usage == PIPE_TRANSFER_READ) {
tex_usage = LP_TEX_USAGE_READ;
mode = "read";
}
else {
tex_usage = LP_TEX_USAGE_READ_WRITE;
mode = "read/write";
}
if (0) {
struct llvmpipe_resource *lpr = llvmpipe_resource(transfer->resource);
printf("transfer map tex %u mode %s\n", lpr->id, mode);
}
assert(transfer->resource);
lpr = llvmpipe_resource(transfer->resource);
format = lpr->base.format;
map = llvmpipe_resource_map(transfer->resource,
transfer->level,
transfer->box.z,
tex_usage, LP_TEX_LAYOUT_LINEAR);
/* May want to do different things here depending on read/write nature
* of the map:
*/
if (transfer->usage & PIPE_TRANSFER_WRITE) {
/* Do something to notify sharing contexts of a texture change.
*/
screen->timestamp++;
}
map +=
transfer->box.y / util_format_get_blockheight(format) * transfer->stride +
transfer->box.x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
return map;
}
static void
llvmpipe_transfer_unmap(struct pipe_context *pipe,
struct pipe_transfer *transfer)
{
assert(transfer->resource);
llvmpipe_resource_unmap(transfer->resource,
transfer->level,
transfer->box.z);
}
unsigned int
llvmpipe_is_resource_referenced( struct pipe_context *pipe,
struct pipe_resource *presource,
unsigned level, int layer)
{
struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
if (presource->target == PIPE_BUFFER)
return LP_UNREFERENCED;
return lp_setup_is_resource_referenced(llvmpipe->setup, presource);
}
/**
* Create buffer which wraps user-space data.
*/
static struct pipe_resource *
llvmpipe_user_buffer_create(struct pipe_screen *screen,
void *ptr,
unsigned bytes,
unsigned bind_flags)
{
struct llvmpipe_resource *buffer;
buffer = CALLOC_STRUCT(llvmpipe_resource);
if(!buffer)
return NULL;
pipe_reference_init(&buffer->base.reference, 1);
buffer->base.screen = screen;
buffer->base.format = PIPE_FORMAT_R8_UNORM; /* ?? */
buffer->base.bind = bind_flags;
buffer->base.usage = PIPE_USAGE_IMMUTABLE;
buffer->base.flags = 0;
buffer->base.width0 = bytes;
buffer->base.height0 = 1;
buffer->base.depth0 = 1;
buffer->base.array_size = 1;
buffer->userBuffer = TRUE;
buffer->data = ptr;
return &buffer->base;
}
/**
* Compute size (in bytes) need to store a texture image / mipmap level,
* for just one cube face or one 3D texture slice
*/
static unsigned
tex_image_face_size(const struct llvmpipe_resource *lpr, unsigned level,
enum lp_texture_layout layout)
{
const unsigned width = u_minify(lpr->base.width0, level);
const unsigned height = u_minify(lpr->base.height0, level);
assert(layout == LP_TEX_LAYOUT_TILED ||
layout == LP_TEX_LAYOUT_LINEAR);
if (layout == LP_TEX_LAYOUT_TILED) {
/* for tiled layout, force a 32bpp format */
const enum pipe_format format = PIPE_FORMAT_B8G8R8A8_UNORM;
const unsigned block_size = util_format_get_blocksize(format);
const unsigned nblocksy =
util_format_get_nblocksy(format, align(height, TILE_SIZE));
const unsigned nblocksx =
util_format_get_nblocksx(format, align(width, TILE_SIZE));
const unsigned buffer_size = block_size * nblocksy * nblocksx;
return buffer_size;
}
else {
/* we already computed this */
return lpr->img_stride[level];
}
}
/**
* Compute size (in bytes) need to store a texture image / mipmap level,
* including all cube faces or 3D image slices
*/
static unsigned
tex_image_size(const struct llvmpipe_resource *lpr, unsigned level,
enum lp_texture_layout layout)
{
const unsigned buf_size = tex_image_face_size(lpr, level, layout);
return buf_size * lpr->num_slices_faces[level];
}
/**
* This function encapsulates some complicated logic for determining
* how to convert a tile of image data from linear layout to tiled
* layout, or vice versa.
* \param cur_layout the current tile layout
* \param target_layout the desired tile layout
* \param usage how the tile will be accessed (R/W vs. read-only, etc)
* \param new_layout_return returns the new layout mode
* \param convert_return returns TRUE if image conversion is needed
*/
static void
layout_logic(enum lp_texture_layout cur_layout,
enum lp_texture_layout target_layout,
enum lp_texture_usage usage,
enum lp_texture_layout *new_layout_return,
boolean *convert)
{
enum lp_texture_layout other_layout, new_layout;
*convert = FALSE;
new_layout = 99; /* debug check */
if (target_layout == LP_TEX_LAYOUT_LINEAR) {
other_layout = LP_TEX_LAYOUT_TILED;
}
else {
assert(target_layout == LP_TEX_LAYOUT_TILED);
other_layout = LP_TEX_LAYOUT_LINEAR;
}
new_layout = target_layout; /* may get changed below */
if (cur_layout == LP_TEX_LAYOUT_BOTH) {
if (usage == LP_TEX_USAGE_READ) {
new_layout = LP_TEX_LAYOUT_BOTH;
}
}
else if (cur_layout == other_layout) {
if (usage != LP_TEX_USAGE_WRITE_ALL) {
/* need to convert tiled data to linear or vice versa */
*convert = TRUE;
if (usage == LP_TEX_USAGE_READ)
new_layout = LP_TEX_LAYOUT_BOTH;
}
}
else {
assert(cur_layout == LP_TEX_LAYOUT_NONE ||
cur_layout == target_layout);
}
assert(new_layout == LP_TEX_LAYOUT_BOTH ||
new_layout == target_layout);
*new_layout_return = new_layout;
}
/**
* Return pointer to a 2D texture image/face/slice.
* No tiled/linear conversion is done.
*/
ubyte *
llvmpipe_get_texture_image_address(struct llvmpipe_resource *lpr,
unsigned face_slice, unsigned level,
enum lp_texture_layout layout)
{
struct llvmpipe_texture_image *img;
unsigned offset;
if (layout == LP_TEX_LAYOUT_LINEAR) {
img = &lpr->linear[level];
}
else {
assert (layout == LP_TEX_LAYOUT_TILED);
img = &lpr->tiled[level];
}
if (face_slice > 0)
offset = face_slice * tex_image_face_size(lpr, level, layout);
else
offset = 0;
return (ubyte *) img->data + offset;
}
static INLINE enum lp_texture_layout
llvmpipe_get_texture_tile_layout(const struct llvmpipe_resource *lpr,
unsigned face_slice, unsigned level,
unsigned x, unsigned y)
{
uint i;
assert(resource_is_texture(&lpr->base));
assert(x < lpr->tiles_per_row[level]);
i = face_slice * lpr->tiles_per_image[level]
+ y * lpr->tiles_per_row[level] + x;
return lpr->layout[level][i];
}
static INLINE void
llvmpipe_set_texture_tile_layout(struct llvmpipe_resource *lpr,
unsigned face_slice, unsigned level,
unsigned x, unsigned y,
enum lp_texture_layout layout)
{
uint i;
assert(resource_is_texture(&lpr->base));
assert(x < lpr->tiles_per_row[level]);
i = face_slice * lpr->tiles_per_image[level]
+ y * lpr->tiles_per_row[level] + x;
lpr->layout[level][i] = layout;
}
/**
* Set the layout mode for all tiles in a particular image.
*/
static INLINE void
llvmpipe_set_texture_image_layout(struct llvmpipe_resource *lpr,
unsigned face_slice, unsigned level,
unsigned width_t, unsigned height_t,
enum lp_texture_layout layout)
{
const unsigned start = face_slice * lpr->tiles_per_image[level];
unsigned i;
for (i = 0; i < width_t * height_t; i++) {
lpr->layout[level][start + i] = layout;
}
}
/**
* Allocate storage for a linear or tile texture image (all cube
* faces and all 3D slices.
*/
static void
alloc_image_data(struct llvmpipe_resource *lpr, unsigned level,
enum lp_texture_layout layout)
{
uint alignment = MAX2(16, util_cpu_caps.cacheline);
if (lpr->dt)
assert(level == 0);
if (layout == LP_TEX_LAYOUT_TILED) {
/* tiled data is stored in regular memory */
uint buffer_size = tex_image_size(lpr, level, layout);
lpr->tiled[level].data = align_malloc(buffer_size, alignment);
}
else {
assert(layout == LP_TEX_LAYOUT_LINEAR);
if (lpr->dt) {
/* we get the linear memory from the winsys */
struct llvmpipe_screen *screen = llvmpipe_screen(lpr->base.screen);
struct sw_winsys *winsys = screen->winsys;
lpr->linear[0].data =
winsys->displaytarget_map(winsys, lpr->dt,
PIPE_TRANSFER_READ_WRITE);
}
else {
/* not a display target - allocate regular memory */
uint buffer_size = tex_image_size(lpr, level, LP_TEX_LAYOUT_LINEAR);
lpr->linear[level].data = align_malloc(buffer_size, alignment);
}
}
}
/**
* Return pointer to texture image data (either linear or tiled layout)
* for a particular cube face or 3D texture slice.
*
* \param face_slice the cube face or 3D slice of interest
* \param usage one of LP_TEX_USAGE_READ/WRITE_ALL/READ_WRITE
* \param layout either LP_TEX_LAYOUT_LINEAR or _TILED or _NONE
*/
void *
llvmpipe_get_texture_image(struct llvmpipe_resource *lpr,
unsigned face_slice, unsigned level,
enum lp_texture_usage usage,
enum lp_texture_layout layout)
{
/*
* 'target' refers to the image which we're retrieving (either in
* tiled or linear layout).
* 'other' refers to the same image but in the other layout. (it may
* or may not exist.
*/
struct llvmpipe_texture_image *target_img;
struct llvmpipe_texture_image *other_img;
void *target_data;
void *other_data;
const unsigned width = u_minify(lpr->base.width0, level);
const unsigned height = u_minify(lpr->base.height0, level);
const unsigned width_t = align(width, TILE_SIZE) / TILE_SIZE;
const unsigned height_t = align(height, TILE_SIZE) / TILE_SIZE;
enum lp_texture_layout other_layout;
boolean only_allocate;
assert(layout == LP_TEX_LAYOUT_NONE ||
layout == LP_TEX_LAYOUT_TILED ||
layout == LP_TEX_LAYOUT_LINEAR);
assert(usage == LP_TEX_USAGE_READ ||
usage == LP_TEX_USAGE_READ_WRITE ||
usage == LP_TEX_USAGE_WRITE_ALL);
/* check for the special case of layout == LP_TEX_LAYOUT_NONE */
if (layout == LP_TEX_LAYOUT_NONE) {
only_allocate = TRUE;
layout = LP_TEX_LAYOUT_TILED;
}
else {
only_allocate = FALSE;
}
if (lpr->dt) {
assert(lpr->linear[level].data);
}
/* which is target? which is other? */
if (layout == LP_TEX_LAYOUT_LINEAR) {
target_img = &lpr->linear[level];
other_img = &lpr->tiled[level];
other_layout = LP_TEX_LAYOUT_TILED;
}
else {
target_img = &lpr->tiled[level];
other_img = &lpr->linear[level];
other_layout = LP_TEX_LAYOUT_LINEAR;
}
target_data = target_img->data;
other_data = other_img->data;
if (!target_data) {
/* allocate memory for the target image now */
alloc_image_data(lpr, level, layout);
target_data = target_img->data;
}
if (face_slice > 0) {
unsigned target_offset, other_offset;
target_offset = face_slice * tex_image_face_size(lpr, level, layout);
other_offset = face_slice * tex_image_face_size(lpr, level, other_layout);
if (target_data) {
target_data = (uint8_t *) target_data + target_offset;
}
if (other_data) {
other_data = (uint8_t *) other_data + other_offset;
}
}
if (only_allocate) {
/* Just allocating tiled memory. Don't initialize it from the
* linear data if it exists.
*/
return target_data;
}
if (other_data) {
/* may need to convert other data to the requested layout */
enum lp_texture_layout new_layout;
unsigned x, y;
/* loop over all image tiles, doing layout conversion where needed */
for (y = 0; y < height_t; y++) {
for (x = 0; x < width_t; x++) {
enum lp_texture_layout cur_layout =
llvmpipe_get_texture_tile_layout(lpr, face_slice, level, x, y);
boolean convert;
layout_logic(cur_layout, layout, usage, &new_layout, &convert);
if (convert && other_data && target_data) {
if (layout == LP_TEX_LAYOUT_TILED) {
lp_linear_to_tiled(other_data, target_data,
x * TILE_SIZE, y * TILE_SIZE,
TILE_SIZE, TILE_SIZE,
lpr->base.format,
lpr->row_stride[level],
lpr->tiles_per_row[level]);
}
else {
assert(layout == LP_TEX_LAYOUT_LINEAR);
lp_tiled_to_linear(other_data, target_data,
x * TILE_SIZE, y * TILE_SIZE,
TILE_SIZE, TILE_SIZE,
lpr->base.format,
lpr->row_stride[level],
lpr->tiles_per_row[level]);
}
}
if (new_layout != cur_layout)
llvmpipe_set_texture_tile_layout(lpr, face_slice, level, x, y,
new_layout);
}
}
}
else {
/* no other data */
llvmpipe_set_texture_image_layout(lpr, face_slice, level,
width_t, height_t, layout);
}
return target_data;
}
/**
* Return pointer to start of a texture image (1D, 2D, 3D, CUBE).
* All cube faces and 3D slices will be converted to the requested
* layout if needed.
* This is typically used when we're about to sample from a texture.
*/
void *
llvmpipe_get_texture_image_all(struct llvmpipe_resource *lpr,
unsigned level,
enum lp_texture_usage usage,
enum lp_texture_layout layout)
{
const int slices = lpr->num_slices_faces[level];
int slice;
void *map = NULL;
assert(slices > 0);
for (slice = slices - 1; slice >= 0; slice--) {
map = llvmpipe_get_texture_image(lpr, slice, level, usage, layout);
}
return map;
}
/**
* Get pointer to a linear image (not the tile!) where the tile at (x,y)
* is known to be in linear layout.
* Conversion from tiled to linear will be done if necessary.
* \return pointer to start of image/face (not the tile)
*/
ubyte *
llvmpipe_get_texture_tile_linear(struct llvmpipe_resource *lpr,
unsigned face_slice, unsigned level,
enum lp_texture_usage usage,
unsigned x, unsigned y)
{
struct llvmpipe_texture_image *linear_img = &lpr->linear[level];
enum lp_texture_layout cur_layout, new_layout;
const unsigned tx = x / TILE_SIZE, ty = y / TILE_SIZE;
boolean convert;
uint8_t *tiled_image, *linear_image;
assert(resource_is_texture(&lpr->base));
assert(x % TILE_SIZE == 0);
assert(y % TILE_SIZE == 0);
if (!linear_img->data) {
/* allocate memory for the linear image now */
alloc_image_data(lpr, level, LP_TEX_LAYOUT_LINEAR);
}
/* compute address of the slice/face of the image that contains the tile */
tiled_image = llvmpipe_get_texture_image_address(lpr, face_slice, level,
LP_TEX_LAYOUT_TILED);
linear_image = llvmpipe_get_texture_image_address(lpr, face_slice, level,
LP_TEX_LAYOUT_LINEAR);
/* get current tile layout and determine if data conversion is needed */
cur_layout = llvmpipe_get_texture_tile_layout(lpr, face_slice, level, tx, ty);
layout_logic(cur_layout, LP_TEX_LAYOUT_LINEAR, usage,
&new_layout, &convert);
if (convert && tiled_image && linear_image) {
lp_tiled_to_linear(tiled_image, linear_image,
x, y, TILE_SIZE, TILE_SIZE, lpr->base.format,
lpr->row_stride[level],
lpr->tiles_per_row[level]);
}
if (new_layout != cur_layout)
llvmpipe_set_texture_tile_layout(lpr, face_slice, level, tx, ty, new_layout);
return linear_image;
}
/**
* Get pointer to tiled data for rendering.
* \return pointer to the tiled data at the given tile position
*/
ubyte *
llvmpipe_get_texture_tile(struct llvmpipe_resource *lpr,
unsigned face_slice, unsigned level,
enum lp_texture_usage usage,
unsigned x, unsigned y)
{
struct llvmpipe_texture_image *tiled_img = &lpr->tiled[level];
enum lp_texture_layout cur_layout, new_layout;
const unsigned tx = x / TILE_SIZE, ty = y / TILE_SIZE;
boolean convert;
uint8_t *tiled_image, *linear_image;
unsigned tile_offset;
assert(x % TILE_SIZE == 0);
assert(y % TILE_SIZE == 0);
if (!tiled_img->data) {
/* allocate memory for the tiled image now */
alloc_image_data(lpr, level, LP_TEX_LAYOUT_TILED);
}
/* compute address of the slice/face of the image that contains the tile */
tiled_image = llvmpipe_get_texture_image_address(lpr, face_slice, level,
LP_TEX_LAYOUT_TILED);
linear_image = llvmpipe_get_texture_image_address(lpr, face_slice, level,
LP_TEX_LAYOUT_LINEAR);
/* get current tile layout and see if we need to convert the data */
cur_layout = llvmpipe_get_texture_tile_layout(lpr, face_slice, level, tx, ty);
layout_logic(cur_layout, LP_TEX_LAYOUT_TILED, usage, &new_layout, &convert);
if (convert && linear_image && tiled_image) {
lp_linear_to_tiled(linear_image, tiled_image,
x, y, TILE_SIZE, TILE_SIZE, lpr->base.format,
lpr->row_stride[level],
lpr->tiles_per_row[level]);
}
if (!tiled_image)
return NULL;
if (new_layout != cur_layout)
llvmpipe_set_texture_tile_layout(lpr, face_slice, level, tx, ty, new_layout);
/* compute, return address of the 64x64 tile */
tile_offset = (ty * lpr->tiles_per_row[level] + tx)
* TILE_SIZE * TILE_SIZE * 4;
return (ubyte *) tiled_image + tile_offset;
}
/**
* Get pointer to tiled data for rendering.
* \return pointer to the tiled data at the given tile position
*/
void
llvmpipe_unswizzle_cbuf_tile(struct llvmpipe_resource *lpr,
unsigned face_slice, unsigned level,
unsigned x, unsigned y,
uint8_t *tile)
{
struct llvmpipe_texture_image *linear_img = &lpr->linear[level];
const unsigned tx = x / TILE_SIZE, ty = y / TILE_SIZE;
uint8_t *linear_image;
assert(x % TILE_SIZE == 0);
assert(y % TILE_SIZE == 0);
if (!linear_img->data) {
/* allocate memory for the linear image now */
alloc_image_data(lpr, level, LP_TEX_LAYOUT_LINEAR);
}
/* compute address of the slice/face of the image that contains the tile */
linear_image = llvmpipe_get_texture_image_address(lpr, face_slice, level,
LP_TEX_LAYOUT_LINEAR);
{
uint ii = x, jj = y;
uint tile_offset = jj / TILE_SIZE + ii / TILE_SIZE;
uint byte_offset = tile_offset * TILE_SIZE * TILE_SIZE * 4;
/* Note that lp_tiled_to_linear expects the tile parameter to
* point at the first tile in a whole-image sized array. In
* this code, we have only a single tile and have to do some
* pointer arithmetic to figure out where the "image" would have
* started.
*/
lp_tiled_to_linear(tile - byte_offset, linear_image,
x, y, TILE_SIZE, TILE_SIZE,
lpr->base.format,
lpr->row_stride[level],
1); /* tiles per row */
}
llvmpipe_set_texture_tile_layout(lpr, face_slice, level, tx, ty,
LP_TEX_LAYOUT_LINEAR);
}
/**
* Get pointer to tiled data for rendering.
* \return pointer to the tiled data at the given tile position
*/
void
llvmpipe_swizzle_cbuf_tile(struct llvmpipe_resource *lpr,
unsigned face_slice, unsigned level,
unsigned x, unsigned y,
uint8_t *tile)
{
uint8_t *linear_image;
assert(x % TILE_SIZE == 0);
assert(y % TILE_SIZE == 0);
/* compute address of the slice/face of the image that contains the tile */
linear_image = llvmpipe_get_texture_image_address(lpr, face_slice, level,
LP_TEX_LAYOUT_LINEAR);
if (linear_image) {
uint ii = x, jj = y;
uint tile_offset = jj / TILE_SIZE + ii / TILE_SIZE;
uint byte_offset = tile_offset * TILE_SIZE * TILE_SIZE * 4;
/* Note that lp_linear_to_tiled expects the tile parameter to
* point at the first tile in a whole-image sized array. In
* this code, we have only a single tile and have to do some
* pointer arithmetic to figure out where the "image" would have
* started.
*/
lp_linear_to_tiled(linear_image, tile - byte_offset,
x, y, TILE_SIZE, TILE_SIZE,
lpr->base.format,
lpr->row_stride[level],
1); /* tiles per row */
}
}
/**
* Return size of resource in bytes
*/
unsigned
llvmpipe_resource_size(const struct pipe_resource *resource)
{
const struct llvmpipe_resource *lpr = llvmpipe_resource_const(resource);
unsigned lvl, size = 0;
for (lvl = 0; lvl <= lpr->base.last_level; lvl++) {
if (lpr->linear[lvl].data)
size += tex_image_size(lpr, lvl, LP_TEX_LAYOUT_LINEAR);
if (lpr->tiled[lvl].data)
size += tex_image_size(lpr, lvl, LP_TEX_LAYOUT_TILED);
}
return size;
}
#ifdef DEBUG
void
llvmpipe_print_resources(void)
{
struct llvmpipe_resource *lpr;
unsigned n = 0, total = 0;
debug_printf("LLVMPIPE: current resources:\n");
foreach(lpr, &resource_list) {
unsigned size = llvmpipe_resource_size(&lpr->base);
debug_printf("resource %u at %p, size %ux%ux%u: %u bytes, refcount %u\n",
lpr->id, (void *) lpr,
lpr->base.width0, lpr->base.height0, lpr->base.depth0,
size, lpr->base.reference.count);
total += size;
n++;
}
debug_printf("LLVMPIPE: total size of %u resources: %u\n", n, total);
}
#endif
void
llvmpipe_init_screen_resource_funcs(struct pipe_screen *screen)
{
#ifdef DEBUG
/* init linked list for tracking resources */
{
static boolean first_call = TRUE;
if (first_call) {
memset(&resource_list, 0, sizeof(resource_list));
make_empty_list(&resource_list);
first_call = FALSE;
}
}
#endif
screen->resource_create = llvmpipe_resource_create;
screen->resource_destroy = llvmpipe_resource_destroy;
screen->resource_from_handle = llvmpipe_resource_from_handle;
screen->resource_get_handle = llvmpipe_resource_get_handle;
screen->user_buffer_create = llvmpipe_user_buffer_create;
}
void
llvmpipe_init_context_resource_funcs(struct pipe_context *pipe)
{
pipe->get_transfer = llvmpipe_get_transfer;
pipe->transfer_destroy = llvmpipe_transfer_destroy;
pipe->transfer_map = llvmpipe_transfer_map;
pipe->transfer_unmap = llvmpipe_transfer_unmap;
pipe->transfer_flush_region = u_default_transfer_flush_region;
pipe->transfer_inline_write = u_default_transfer_inline_write;
pipe->create_surface = llvmpipe_create_surface;
pipe->surface_destroy = llvmpipe_surface_destroy;
}
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