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mesa/src/gallium/drivers/llvmpipe/lp_texture.c

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/**************************************************************************
*
* Copyright 2006 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.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keithw@vmware.com>
* Michel Dänzer <daenzer@vmware.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/format/u_format.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/simple_list.h"
#include "util/u_transfer.h"
#include "lp_context.h"
#include "lp_flush.h"
#include "lp_screen.h"
#include "lp_texture.h"
#include "lp_setup.h"
#include "lp_state.h"
#include "lp_rast.h"
#include "frontend/sw_winsys.h"
#ifdef DEBUG
static struct llvmpipe_resource resource_list;
#endif
static unsigned id_counter = 0;
/**
* Conventional allocation path for non-display textures:
* Compute strides and allocate data (unless asked not to).
*/
static boolean
llvmpipe_texture_layout(struct llvmpipe_screen *screen,
struct llvmpipe_resource *lpr,
boolean allocate)
{
struct pipe_resource *pt = &lpr->base;
unsigned level;
unsigned width = pt->width0;
unsigned height = pt->height0;
unsigned depth = pt->depth0;
uint64_t total_size = 0;
unsigned layers = pt->array_size;
unsigned num_samples = util_res_sample_count(pt);
/* XXX:
* This alignment here (same for displaytarget) was added for the purpose of
* ARB_map_buffer_alignment. I am not convinced it's needed for non-buffer
* resources. Otherwise we'd want the max of cacheline size and 16 (max size
* of a block for all formats) though this should not be strictly necessary
* neither. In any case it can only affect compressed or 1d textures.
*/
unsigned mip_align = MAX2(64, util_cpu_caps.cacheline);
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++) {
uint64_t mipsize;
unsigned align_x, align_y, nblocksx, nblocksy, block_size, num_slices;
/* Row stride and image stride */
/* For non-compressed formats we need 4x4 pixel alignment
* so we can read/write LP_RASTER_BLOCK_SIZE when rendering to them.
* We also want cache line size in x direction,
* otherwise same cache line could end up in multiple threads.
* For explicit 1d resources however we reduce this to 4x1 and
* handle specially in render output code (as we need to do special
* handling there for buffers in any case).
*/
if (util_format_is_compressed(pt->format))
align_x = align_y = 1;
else {
align_x = LP_RASTER_BLOCK_SIZE;
if (llvmpipe_resource_is_1d(&lpr->base))
align_y = 1;
else
align_y = LP_RASTER_BLOCK_SIZE;
}
nblocksx = util_format_get_nblocksx(pt->format,
align(width, align_x));
nblocksy = util_format_get_nblocksy(pt->format,
align(height, align_y));
block_size = util_format_get_blocksize(pt->format);
if (util_format_is_compressed(pt->format))
lpr->row_stride[level] = nblocksx * block_size;
else
lpr->row_stride[level] = align(nblocksx * block_size, util_cpu_caps.cacheline);
/* if row_stride * height > LP_MAX_TEXTURE_SIZE */
if ((uint64_t)lpr->row_stride[level] * nblocksy > LP_MAX_TEXTURE_SIZE) {
/* image too large */
goto fail;
}
lpr->img_stride[level] = lpr->row_stride[level] * nblocksy;
/* Number of 3D image slices, cube faces or texture array layers */
if (lpr->base.target == PIPE_TEXTURE_CUBE) {
assert(layers == 6);
}
if (lpr->base.target == PIPE_TEXTURE_3D)
num_slices = depth;
else if (lpr->base.target == PIPE_TEXTURE_1D_ARRAY ||
lpr->base.target == PIPE_TEXTURE_2D_ARRAY ||
lpr->base.target == PIPE_TEXTURE_CUBE ||
lpr->base.target == PIPE_TEXTURE_CUBE_ARRAY)
num_slices = layers;
else
num_slices = 1;
/* if img_stride * num_slices_faces > LP_MAX_TEXTURE_SIZE */
mipsize = (uint64_t)lpr->img_stride[level] * num_slices;
if (mipsize > LP_MAX_TEXTURE_SIZE) {
/* volume too large */
goto fail;
}
lpr->mip_offsets[level] = total_size;
total_size += align((unsigned)mipsize, mip_align);
if (total_size > LP_MAX_TEXTURE_SIZE) {
goto fail;
}
/* Compute size of next mipmap level */
width = u_minify(width, 1);
height = u_minify(height, 1);
depth = u_minify(depth, 1);
}
lpr->sample_stride = total_size;
total_size *= num_samples;
if (allocate) {
lpr->tex_data = align_malloc(total_size, mip_align);
if (!lpr->tex_data) {
return FALSE;
}
else {
memset(lpr->tex_data, 0, total_size);
}
}
return TRUE;
fail:
return FALSE;
}
/**
* Check the size of the texture specified by 'res'.
* \return TRUE if OK, FALSE if too large.
*/
static bool
llvmpipe_can_create_resource(struct pipe_screen *screen,
const struct pipe_resource *res)
{
struct llvmpipe_resource lpr;
memset(&lpr, 0, sizeof(lpr));
lpr.base = *res;
return llvmpipe_texture_layout(llvmpipe_screen(screen), &lpr, false);
}
static boolean
llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen,
struct llvmpipe_resource *lpr,
const void *map_front_private)
{
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 = MAX2(1, align(lpr->base.width0, TILE_SIZE));
const unsigned height = MAX2(1, align(lpr->base.height0, TILE_SIZE));
lpr->dt = winsys->displaytarget_create(winsys,
lpr->base.bind,
lpr->base.format,
width, height,
64,
map_front_private,
&lpr->row_stride[0] );
if (lpr->dt == NULL)
return FALSE;
if (!map_front_private) {
void *map = winsys->displaytarget_map(winsys, lpr->dt,
PIPE_TRANSFER_WRITE);
if (map)
memset(map, 0, height * lpr->row_stride[0]);
winsys->displaytarget_unmap(winsys, lpr->dt);
}
return TRUE;
}
static struct pipe_resource *
llvmpipe_resource_create_front(struct pipe_screen *_screen,
const struct pipe_resource *templat,
const void *map_front_private)
{
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 (llvmpipe_resource_is_texture(&lpr->base)) {
if (lpr->base.bind & (PIPE_BIND_DISPLAY_TARGET |
PIPE_BIND_SCANOUT |
PIPE_BIND_SHARED)) {
/* displayable surface */
if (!llvmpipe_displaytarget_layout(screen, lpr, map_front_private))
goto fail;
}
else {
/* texture map */
if (!llvmpipe_texture_layout(screen, lpr, true))
goto fail;
}
}
else {
/* other data (vertex buffer, const buffer, etc) */
const uint bytes = templat->width0;
assert(util_format_get_blocksize(templat->format) == 1);
assert(templat->height0 == 1);
assert(templat->depth0 == 1);
assert(templat->last_level == 0);
/*
* Reserve some extra storage since if we'd render to a buffer we
* read/write always LP_RASTER_BLOCK_SIZE pixels, but the element
* offset doesn't need to be aligned to LP_RASTER_BLOCK_SIZE.
*/
lpr->data = align_malloc(bytes + (LP_RASTER_BLOCK_SIZE - 1) * 4 * sizeof(float), 64);
/*
* buffers don't really have stride but it's probably safer
* (for code doing same calculations for buffers and textures)
* to put something sane in there.
*/
lpr->row_stride[0] = bytes;
if (!lpr->data)
goto fail;
memset(lpr->data, 0, bytes);
}
lpr->id = id_counter++;
#ifdef DEBUG
insert_at_tail(&resource_list, lpr);
#endif
return &lpr->base;
fail:
FREE(lpr);
return NULL;
}
static struct pipe_resource *
llvmpipe_resource_create(struct pipe_screen *_screen,
const struct pipe_resource *templat)
{
return llvmpipe_resource_create_front(_screen, templat, 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);
}
else if (llvmpipe_resource_is_texture(pt)) {
/* free linear image data */
if (lpr->tex_data) {
align_free(lpr->tex_data);
lpr->tex_data = 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)
{
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);
if (lpr->dt) {
/* display target */
struct llvmpipe_screen *screen = llvmpipe_screen(resource->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(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->tex_data = map;
return map;
}
else if (llvmpipe_resource_is_texture(resource)) {
map = llvmpipe_get_texture_image_address(lpr, layer, level);
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);
winsys->displaytarget_unmap(winsys, lpr->dt);
}
}
void *
llvmpipe_resource_data(struct pipe_resource *resource)
{
struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
assert(!llvmpipe_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,
unsigned usage)
{
struct sw_winsys *winsys = llvmpipe_screen(screen)->winsys;
struct llvmpipe_resource *lpr;
/* 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;
/*
* 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->dt = winsys->displaytarget_from_handle(winsys,
template,
whandle,
&lpr->row_stride[0]);
if (!lpr->dt) {
goto no_dt;
}
lpr->id = id_counter++;
#ifdef DEBUG
insert_at_tail(&resource_list, lpr);
#endif
return &lpr->base;
no_dt:
FREE(lpr);
no_lpr:
return NULL;
}
static bool
llvmpipe_resource_get_handle(struct pipe_screen *screen,
struct pipe_context *ctx,
struct pipe_resource *pt,
struct winsys_handle *whandle,
unsigned usage)
{
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);
}
void *
llvmpipe_transfer_map_ms( struct pipe_context *pipe,
struct pipe_resource *resource,
unsigned level,
unsigned usage,
unsigned sample,
const struct pipe_box *box,
struct pipe_transfer **transfer )
{
struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
struct llvmpipe_transfer *lpt;
struct pipe_transfer *pt;
ubyte *map;
enum pipe_format format;
enum lp_texture_usage tex_usage;
const char *mode;
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,
read_only,
TRUE, /* cpu_access */
do_not_block,
__FUNCTION__)) {
/*
* It would have blocked, but gallium frontend requested no to.
*/
assert(do_not_block);
return NULL;
}
}
/* Check if we're mapping a current constant buffer */
if ((usage & PIPE_TRANSFER_WRITE) &&
(resource->bind & PIPE_BIND_CONSTANT_BUFFER)) {
unsigned i;
for (i = 0; i < ARRAY_SIZE(llvmpipe->constants[PIPE_SHADER_FRAGMENT]); ++i) {
if (resource == llvmpipe->constants[PIPE_SHADER_FRAGMENT][i].buffer) {
/* constants may have changed */
llvmpipe->dirty |= LP_NEW_FS_CONSTANTS;
break;
}
}
}
lpt = CALLOC_STRUCT(llvmpipe_transfer);
if (!lpt)
return NULL;
pt = &lpt->base;
pipe_resource_reference(&pt->resource, resource);
pt->box = *box;
pt->level = level;
pt->stride = lpr->row_stride[level];
pt->layer_stride = lpr->img_stride[level];
pt->usage = usage;
*transfer = pt;
assert(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 (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) {
printf("transfer map tex %u mode %s\n", lpr->id, mode);
}
format = lpr->base.format;
map = llvmpipe_resource_map(resource,
level,
box->z,
tex_usage);
/* May want to do different things here depending on read/write nature
* of the map:
*/
if (usage & PIPE_TRANSFER_WRITE) {
/* Do something to notify sharing contexts of a texture change.
*/
screen->timestamp++;
}
map +=
box->y / util_format_get_blockheight(format) * pt->stride +
box->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
map += sample * lpr->sample_stride;
return map;
}
static void *
llvmpipe_transfer_map( struct pipe_context *pipe,
struct pipe_resource *resource,
unsigned level,
unsigned usage,
const struct pipe_box *box,
struct pipe_transfer **transfer )
{
return llvmpipe_transfer_map_ms(pipe, resource, level, usage, 0, box, transfer);
}
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);
/* 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);
}
unsigned int
llvmpipe_is_resource_referenced( struct pipe_context *pipe,
struct pipe_resource *presource,
unsigned level)
{
struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
if (!(presource->bind & (PIPE_BIND_DEPTH_STENCIL |
PIPE_BIND_RENDER_TARGET |
PIPE_BIND_SAMPLER_VIEW |
PIPE_BIND_SHADER_BUFFER |
PIPE_BIND_SHADER_IMAGE)))
return LP_UNREFERENCED;
return lp_setup_is_resource_referenced(llvmpipe->setup, presource);
}
/**
* Returns the largest possible alignment for a format in llvmpipe
*/
unsigned
llvmpipe_get_format_alignment( enum pipe_format format )
{
const struct util_format_description *desc = util_format_description(format);
unsigned size = 0;
unsigned bytes;
unsigned i;
for (i = 0; i < desc->nr_channels; ++i) {
size += desc->channel[i].size;
}
bytes = size / 8;
if (!util_is_power_of_two_or_zero(bytes)) {
bytes /= desc->nr_channels;
}
if (bytes % 2 || bytes < 1) {
return 1;
} else {
return bytes;
}
}
/**
* Create buffer which wraps user-space data.
* XXX unreachable.
*/
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, one array layer or one 3D texture slice
*/
static unsigned
tex_image_face_size(const struct llvmpipe_resource *lpr, unsigned level)
{
return lpr->img_stride[level];
}
/**
* 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)
{
unsigned offset;
assert(llvmpipe_resource_is_texture(&lpr->base));
offset = lpr->mip_offsets[level];
if (face_slice > 0)
offset += face_slice * tex_image_face_size(lpr, level);
return (ubyte *) lpr->tex_data + offset;
}
/**
* 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 size = 0;
if (llvmpipe_resource_is_texture(resource)) {
/* Note this will always return 0 for displaytarget resources */
size = lpr->total_alloc_size;
}
else {
size = resource->width0;
}
return size;
}
static void
llvmpipe_memory_barrier(struct pipe_context *pipe,
unsigned flags)
{
/* this may be an overly large hammer for this nut. */
llvmpipe_finish(pipe, "barrier");
}
#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_create_front = llvmpipe_resource_create_front; */
screen->resource_destroy = llvmpipe_resource_destroy;
screen->resource_from_handle = llvmpipe_resource_from_handle;
screen->resource_get_handle = llvmpipe_resource_get_handle;
screen->can_create_resource = llvmpipe_can_create_resource;
}
void
llvmpipe_init_context_resource_funcs(struct pipe_context *pipe)
{
pipe->transfer_map = llvmpipe_transfer_map;
pipe->transfer_unmap = llvmpipe_transfer_unmap;
pipe->transfer_flush_region = u_default_transfer_flush_region;
pipe->buffer_subdata = u_default_buffer_subdata;
pipe->texture_subdata = u_default_texture_subdata;
pipe->memory_barrier = llvmpipe_memory_barrier;
}
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