/**************************************************************************
*
* 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_format.h"
#include "util/u_math.h"
#include "util/u_memory.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_tile_size.h"
#include "state_tracker/sw_winsys.h"
static INLINE boolean
resource_is_texture(const struct pipe_resource *resource)
{
const unsigned tex_binds = (PIPE_BIND_DISPLAY_TARGET |
PIPE_BIND_SCANOUT |
PIPE_BIND_SHARED |
PIPE_BIND_DEPTH_STENCIL |
PIPE_BIND_SAMPLER_VIEW);
const struct llvmpipe_resource *lpt = llvmpipe_resource_const(resource);
return (lpt->base.bind & tex_binds) ? TRUE : 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 width, unsigned height)
{
const unsigned tx = align(width, TILE_SIZE) / TILE_SIZE;
const unsigned ty = align(height, TILE_SIZE) / TILE_SIZE;
assert(tx * ty > 0);
assert(LP_TEX_LAYOUT_NONE == 0); /* calloc'ing LP_TEX_LAYOUT_NONE here */
return (enum lp_texture_layout *)
calloc(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 *lpt)
{
struct pipe_resource *pt = &lpt->base;
unsigned level;
unsigned width = pt->width0;
unsigned height = pt->height0;
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++) {
const unsigned num_faces = lpt->base.target == PIPE_TEXTURE_CUBE ? 6 : 1;
unsigned nblocksx, face;
/* Allocate storage for whole quads. This is particularly important
* for depth surfaces, which are currently stored in a swizzled format.
*/
nblocksx = util_format_get_nblocksx(pt->format, align(width, TILE_SIZE));
lpt->stride[level] =
align(nblocksx * util_format_get_blocksize(pt->format), 16);
lpt->tiles_per_row[level] = align(width, TILE_SIZE) / TILE_SIZE;
for (face = 0; face < num_faces; face++) {
lpt->layout[face][level] = alloc_layout_array(width, height);
}
width = u_minify(width, 1);
height = u_minify(height, 1);
}
return TRUE;
}
static boolean
llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen,
struct llvmpipe_resource *lpt)
{
struct sw_winsys *winsys = screen->winsys;
/* Round up the surface size to a multiple of the tile size to
* avoid tile clipping.
*/
unsigned width = align(lpt->base.width0, TILE_SIZE);
unsigned height = align(lpt->base.height0, TILE_SIZE);
lpt->tiles_per_row[0] = align(width, TILE_SIZE) / TILE_SIZE;
lpt->layout[0][0] = alloc_layout_array(width, height);
lpt->dt = winsys->displaytarget_create(winsys,
lpt->base.bind,
lpt->base.format,
width, height,
16,
&lpt->stride[0] );
return lpt->dt != NULL;
}
static struct pipe_resource *
llvmpipe_resource_create(struct pipe_screen *_screen,
const struct pipe_resource *templat)
{
static unsigned id_counter = 0;
struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
struct llvmpipe_resource *lpt = CALLOC_STRUCT(llvmpipe_resource);
if (!lpt)
return NULL;
lpt->base = *templat;
pipe_reference_init(&lpt->base.reference, 1);
lpt->base.screen = &screen->base;
assert(lpt->base.bind);
if (lpt->base.bind & (PIPE_BIND_DISPLAY_TARGET |
PIPE_BIND_SCANOUT |
PIPE_BIND_SHARED)) {
/* displayable surface */
if (!llvmpipe_displaytarget_layout(screen, lpt))
goto fail;
assert(lpt->layout[0][0][0] == LP_TEX_LAYOUT_NONE);
}
else if (lpt->base.bind & (PIPE_BIND_SAMPLER_VIEW |
PIPE_BIND_DEPTH_STENCIL)) {
/* texture map */
if (!llvmpipe_texture_layout(screen, lpt))
goto fail;
assert(lpt->layout[0][0][0] == LP_TEX_LAYOUT_NONE);
}
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);
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;
lpt->data = align_malloc(bytes, 16);
if (!lpt->data)
goto fail;
}
if (resource_is_texture(&lpt->base)) {
assert(lpt->layout[0][0]);
}
lpt->id = id_counter++;
return &lpt->base;
fail:
FREE(lpt);
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 *lpt = llvmpipe_resource(pt);
if (lpt->dt) {
/* display target */
struct sw_winsys *winsys = screen->winsys;
winsys->displaytarget_destroy(winsys, lpt->dt);
}
else if (resource_is_texture(pt)) {
/* regular texture */
const uint num_faces = pt->target == PIPE_TEXTURE_CUBE ? 6 : 1;
uint level, face;
/* free linear image data */
for (level = 0; level < Elements(lpt->linear); level++) {
if (lpt->linear[level].data) {
align_free(lpt->linear[level].data);
lpt->linear[level].data = NULL;
}
}
/* free tiled image data */
for (level = 0; level < Elements(lpt->tiled); level++) {
if (lpt->tiled[level].data) {
align_free(lpt->tiled[level].data);
lpt->tiled[level].data = NULL;
}
}
/* free layout flag arrays */
for (level = 0; level < Elements(lpt->tiled); level++) {
for (face = 0; face < num_faces; face++) {
free(lpt->layout[face][level]);
lpt->layout[face][level] = NULL;
}
}
}
else if (!lpt->userBuffer) {
assert(lpt->data);
align_free(lpt->data);
}
FREE(lpt);
}
/**
* Map a texture for read/write (rendering). Without any synchronization.
*/
void *
llvmpipe_resource_map(struct pipe_resource *texture,
unsigned face,
unsigned level,
unsigned zslice,
enum lp_texture_usage tex_usage,
enum lp_texture_layout layout)
{
struct llvmpipe_resource *lpt = llvmpipe_resource(texture);
uint8_t *map;
assert(face < 6);
assert(level < LP_MAX_TEXTURE_LEVELS);
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 (lpt->dt) {
/* display target */
struct llvmpipe_screen *screen = llvmpipe_screen(texture->screen);
struct sw_winsys *winsys = screen->winsys;
unsigned dt_usage;
if (tex_usage == LP_TEX_USAGE_READ) {
dt_usage = PIPE_TRANSFER_READ;
}
else {
dt_usage = PIPE_TRANSFER_READ_WRITE;
}
assert(face == 0);
assert(level == 0);
assert(zslice == 0);
/* FIXME: keep map count? */
map = winsys->displaytarget_map(winsys, lpt->dt, dt_usage);
/* install this linear image in texture data structure */
lpt->linear[level].data = map;
map = llvmpipe_get_texture_image(lpt, face, level, tex_usage, layout);
assert(map);
return map;
}
else if (resource_is_texture(texture)) {
/* regular texture */
const unsigned tex_height = u_minify(texture->height0, level);
const unsigned nblocksy =
util_format_get_nblocksy(texture->format, tex_height);
const unsigned stride = lpt->stride[level];
unsigned offset = 0;
if (texture->target == PIPE_TEXTURE_CUBE) {
/* XXX incorrect
offset = face * nblocksy * stride;
*/
}
else if (texture->target == PIPE_TEXTURE_3D) {
offset = zslice * nblocksy * stride;
}
else {
assert(face == 0);
assert(zslice == 0);
offset = 0;
}
map = llvmpipe_get_texture_image(lpt, face, level, tex_usage, layout);
assert(map);
map += offset;
return map;
}
else {
return lpt->data;
}
}
/**
* Unmap a texture. Without any synchronization.
*/
void
llvmpipe_resource_unmap(struct pipe_resource *texture,
unsigned face,
unsigned level,
unsigned zslice)
{
struct llvmpipe_resource *lpt = llvmpipe_resource(texture);
if (lpt->dt) {
/* display target */
struct llvmpipe_screen *lp_screen = llvmpipe_screen(texture->screen);
struct sw_winsys *winsys = lp_screen->winsys;
assert(face == 0);
assert(level == 0);
assert(zslice == 0);
/* make sure linear image is up to date */
(void) llvmpipe_get_texture_image(lpt, 0, 0,
LP_TEX_USAGE_READ,
LP_TEX_LAYOUT_LINEAR);
winsys->displaytarget_unmap(winsys, lpt->dt);
}
}
void *
llvmpipe_resource_data(struct pipe_resource *resource)
{
struct llvmpipe_resource *lpt = llvmpipe_resource(resource);
assert((lpt->base.bind & (PIPE_BIND_DISPLAY_TARGET |
PIPE_BIND_SCANOUT |
PIPE_BIND_SHARED |
PIPE_BIND_SAMPLER_VIEW)) == 0);
return lpt->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 *lpt = CALLOC_STRUCT(llvmpipe_resource);
if (!lpt)
return NULL;
lpt->base = *template;
pipe_reference_init(&lpt->base.reference, 1);
lpt->base.screen = screen;
lpt->dt = winsys->displaytarget_from_handle(winsys,
template,
whandle,
&lpt->stride[0]);
if (!lpt->dt)
goto fail;
return &lpt->base;
fail:
FREE(lpt);
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 *lpt = llvmpipe_resource(pt);
assert(lpt->dt);
if (!lpt->dt)
return FALSE;
return winsys->displaytarget_get_handle(winsys, lpt->dt, whandle);
}
static struct pipe_surface *
llvmpipe_get_tex_surface(struct pipe_screen *screen,
struct pipe_resource *pt,
unsigned face, unsigned level, unsigned zslice,
enum lp_texture_usage usage)
{
struct pipe_surface *ps;
assert(level <= pt->last_level);
ps = CALLOC_STRUCT(pipe_surface);
if (ps) {
pipe_reference_init(&ps->reference, 1);
pipe_resource_reference(&ps->texture, pt);
ps->format = pt->format;
ps->width = u_minify(pt->width0, level);
ps->height = u_minify(pt->height0, level);
ps->usage = usage;
ps->face = face;
ps->level = level;
ps->zslice = zslice;
}
return ps;
}
static void
llvmpipe_tex_surface_destroy(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,
struct pipe_subresource sr,
unsigned usage,
const struct pipe_box *box)
{
struct llvmpipe_resource *lptex = llvmpipe_resource(resource);
struct llvmpipe_transfer *lpt;
assert(resource);
assert(sr.level <= resource->last_level);
lpt = CALLOC_STRUCT(llvmpipe_transfer);
if (lpt) {
struct pipe_transfer *pt = &lpt->base;
pipe_resource_reference(&pt->resource, resource);
pt->box = *box;
pt->sr = sr;
pt->stride = lptex->stride[sr.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 *lpt;
enum pipe_format format;
enum lp_texture_usage tex_usage;
const char *mode;
assert(transfer->sr.face < 6);
assert(transfer->sr.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 *lpt = llvmpipe_resource(transfer->resource);
printf("transfer map tex %u mode %s\n", lpt->id, mode);
}
assert(transfer->resource);
lpt = llvmpipe_resource(transfer->resource);
format = lpt->base.format;
/*
* Transfers, like other pipe operations, must happen in order, so flush the
* context if necessary.
*/
llvmpipe_flush_texture(pipe,
transfer->resource,
transfer->sr.face,
transfer->sr.level,
0, /* flush_flags */
!(transfer->usage & PIPE_TRANSFER_WRITE), /* read_only */
TRUE, /* cpu_access */
FALSE); /* do_not_flush */
map = llvmpipe_resource_map(transfer->resource,
transfer->sr.face,
transfer->sr.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->sr.face,
transfer->sr.level,
transfer->box.z);
}
static unsigned int
llvmpipe_is_resource_referenced( struct pipe_context *pipe,
struct pipe_resource *presource,
unsigned face, unsigned level)
{
struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
if (presource->target == PIPE_BUFFER)
return PIPE_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->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.
*/
static unsigned
tex_image_face_size(const struct llvmpipe_resource *lpt, unsigned level,
enum lp_texture_layout layout)
{
/* for tiled layout, force a 32bpp format */
enum pipe_format format = layout == LP_TEX_LAYOUT_TILED
? PIPE_FORMAT_B8G8R8A8_UNORM : lpt->base.format;
const unsigned height = u_minify(lpt->base.height0, level);
const unsigned depth = u_minify(lpt->base.depth0, level);
const unsigned nblocksy =
util_format_get_nblocksy(format, align(height, TILE_SIZE));
const unsigned buffer_size =
nblocksy * lpt->stride[level] *
(lpt->base.target == PIPE_TEXTURE_3D ? depth : 1);
return buffer_size;
}
/**
* Compute size (in bytes) need to store a texture image / mipmap level,
* including all cube faces.
*/
static unsigned
tex_image_size(const struct llvmpipe_resource *lpt, unsigned level,
enum lp_texture_layout layout)
{
const unsigned buf_size = tex_image_face_size(lpt, level, layout);
const unsigned num_faces = lpt->base.target == PIPE_TEXTURE_CUBE ? 6 : 1;
return buf_size * num_faces;
}
/**
* 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 texture image. No tiled/linear conversion is done.
*/
void *
llvmpipe_get_texture_image_address(struct llvmpipe_resource *lpt,
unsigned face, unsigned level,
enum lp_texture_layout layout)
{
struct llvmpipe_texture_image *img;
unsigned face_offset;
if (layout == LP_TEX_LAYOUT_LINEAR) {
img = &lpt->linear[level];
}
else {
assert (layout == LP_TEX_LAYOUT_TILED);
img = &lpt->tiled[level];
}
if (face > 0)
face_offset = face * tex_image_face_size(lpt, level, layout);
else
face_offset = 0;
return (ubyte *) img->data + face_offset;
}
/**
* Return pointer to texture image data (either linear or tiled layout).
* \param usage one of LP_TEX_USAGE_READ/WRITE_ALL/READ_WRITE
* \param layout either LP_TEX_LAYOUT_LINEAR or LP_TEX_LAYOUT_TILED
*/
void *
llvmpipe_get_texture_image(struct llvmpipe_resource *lpt,
unsigned face, 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(lpt->base.width0, level);
const unsigned height = u_minify(lpt->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;
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);
if (lpt->dt) {
assert(lpt->linear[level].data);
}
/* which is target? which is other? */
if (layout == LP_TEX_LAYOUT_LINEAR) {
target_img = &lpt->linear[level];
other_img = &lpt->tiled[level];
other_layout = LP_TEX_LAYOUT_TILED;
}
else {
target_img = &lpt->tiled[level];
other_img = &lpt->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 */
unsigned buffer_size = tex_image_size(lpt, level, layout);
target_img->data = align_malloc(buffer_size, 16);
target_data = target_img->data;
}
if (face > 0) {
unsigned offset = face * tex_image_face_size(lpt, level, layout);
if (target_data) {
target_data = (uint8_t *) target_data + offset;
}
if (other_data) {
other_data = (uint8_t *) other_data + offset;
}
}
if (layout == LP_TEX_LAYOUT_NONE) {
/* just allocating memory */
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, i = 0;
/* 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 = lpt->layout[face][level][i];
boolean convert;
layout_logic(cur_layout, layout, usage, &new_layout, &convert);
if (convert) {
if (layout == LP_TEX_LAYOUT_TILED) {
lp_linear_to_tiled(other_data, target_data,
x * TILE_SIZE, y * TILE_SIZE,
TILE_SIZE, TILE_SIZE,
lpt->base.format,
lpt->stride[level]);
}
else {
lp_tiled_to_linear(other_data, target_data,
x * TILE_SIZE, y * TILE_SIZE,
TILE_SIZE, TILE_SIZE,
lpt->base.format,
lpt->stride[level]);
}
}
lpt->layout[face][level][i] = new_layout;
i++;
}
}
}
else {
/* no other data */
unsigned i;
for (i = 0; i < width_t * height_t; i++) {
lpt->layout[face][level][i] = layout;
}
}
assert(target_data);
return target_data;
}
static INLINE enum lp_texture_layout
llvmpipe_get_texture_tile_layout(const struct llvmpipe_resource *lpt,
unsigned face, unsigned level,
unsigned x, unsigned y)
{
uint i;
assert(resource_is_texture(&lpt->base));
assert(x < lpt->tiles_per_row[level]);
i = y * lpt->tiles_per_row[level] + x;
return lpt->layout[face][level][i];
}
static INLINE void
llvmpipe_set_texture_tile_layout(struct llvmpipe_resource *lpt,
unsigned face, unsigned level,
unsigned x, unsigned y,
enum lp_texture_layout layout)
{
uint i;
assert(resource_is_texture(&lpt->base));
assert(x < lpt->tiles_per_row[level]);
i = y * lpt->tiles_per_row[level] + x;
lpt->layout[face][level][i] = layout;
}
/**
* Get pointer to a linear image 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 *lpt,
unsigned face, unsigned level,
enum lp_texture_usage usage,
unsigned x, unsigned y)
{
struct llvmpipe_texture_image *tiled_img = &lpt->tiled[level];
struct llvmpipe_texture_image *linear_img = &lpt->linear[level];
enum lp_texture_layout cur_layout, new_layout;
const unsigned tx = x / TILE_SIZE, ty = y / TILE_SIZE;
boolean convert;
assert(resource_is_texture(&lpt->base));
assert(x % TILE_SIZE == 0);
assert(y % TILE_SIZE == 0);
if (!linear_img->data) {
/* allocate memory for the tiled image now */
unsigned buffer_size = tex_image_size(lpt, level, LP_TEX_LAYOUT_LINEAR);
linear_img->data = align_malloc(buffer_size, 16);
}
cur_layout = llvmpipe_get_texture_tile_layout(lpt, face, level, tx, ty);
layout_logic(cur_layout, LP_TEX_LAYOUT_LINEAR, usage,
&new_layout, &convert);
if (convert) {
lp_tiled_to_linear(tiled_img->data, linear_img->data,
x, y, TILE_SIZE, TILE_SIZE, lpt->base.format,
lpt->stride[level]);
}
if (new_layout != cur_layout)
llvmpipe_set_texture_tile_layout(lpt, face, level, tx, ty, new_layout);
if (face > 0) {
unsigned offset
= face * tex_image_face_size(lpt, level, LP_TEX_LAYOUT_LINEAR);
return (ubyte *) linear_img->data + offset;
}
else {
return linear_img->data;
}
}
/**
* 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 *lpt,
unsigned face, unsigned level,
enum lp_texture_usage usage,
unsigned x, unsigned y)
{
const unsigned width = u_minify(lpt->base.width0, level);
struct llvmpipe_texture_image *tiled_img = &lpt->tiled[level];
struct llvmpipe_texture_image *linear_img = &lpt->linear[level];
enum lp_texture_layout cur_layout, new_layout;
const unsigned tx = x / TILE_SIZE, ty = y / TILE_SIZE;
boolean convert;
assert(x % TILE_SIZE == 0);
assert(y % TILE_SIZE == 0);
if (!tiled_img->data) {
/* allocate memory for the tiled image now */
unsigned buffer_size = tex_image_size(lpt, level, LP_TEX_LAYOUT_TILED);
tiled_img->data = align_malloc(buffer_size, 16);
}
cur_layout = llvmpipe_get_texture_tile_layout(lpt, face, level, tx, ty);
layout_logic(cur_layout, LP_TEX_LAYOUT_TILED, usage, &new_layout, &convert);
if (convert) {
lp_linear_to_tiled(linear_img->data, tiled_img->data,
x, y, TILE_SIZE, TILE_SIZE, lpt->base.format,
lpt->stride[level]);
}
if (new_layout != cur_layout)
llvmpipe_set_texture_tile_layout(lpt, face, level, tx, ty, new_layout);
/* compute, return address of the 64x64 tile */
{
unsigned tiles_per_row, tile_offset, face_offset;
tiles_per_row = align(width, TILE_SIZE) / TILE_SIZE;
assert(tiles_per_row == lpt->tiles_per_row[level]);
tile_offset = ty * tiles_per_row + tx;
tile_offset *= TILE_SIZE * TILE_SIZE * 4;
assert(tiled_img->data);
face_offset = (face > 0)
? (face * tex_image_face_size(lpt, level, LP_TEX_LAYOUT_TILED))
: 0;
return (ubyte *) tiled_img->data + face_offset + tile_offset;
}
}
void
llvmpipe_init_screen_resource_funcs(struct pipe_screen *screen)
{
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;
screen->get_tex_surface = llvmpipe_get_tex_surface;
screen->tex_surface_destroy = llvmpipe_tex_surface_destroy;
}
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->is_resource_referenced = llvmpipe_is_resource_referenced;
pipe->transfer_flush_region = u_default_transfer_flush_region;
pipe->transfer_inline_write = u_default_transfer_inline_write;
}