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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>
* Brian Paul
*/
#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 "cell_context.h"
#include "cell_screen.h"
#include "cell_state.h"
#include "cell_resource.h"
#include "state_tracker/sw_winsys.h"
static boolean
cell_resource_layout(struct pipe_screen *screen,
struct cell_resource *ct)
{
struct pipe_resource *pt = &ct->base;
unsigned level;
unsigned width = pt->width0;
unsigned height = pt->height0;
unsigned depth = pt->depth0;
ct->buffer_size = 0;
for (level = 0; level <= pt->last_level; level++) {
unsigned size;
unsigned w_tile, h_tile;
assert(level < CELL_MAX_TEXTURE_LEVELS);
/* width, height, rounded up to tile size */
w_tile = align(width, TILE_SIZE);
h_tile = align(height, TILE_SIZE);
ct->stride[level] = util_format_get_stride(pt->format, w_tile);
ct->level_offset[level] = ct->buffer_size;
size = ct->stride[level] * util_format_get_nblocksy(pt->format, h_tile);
if (pt->target == PIPE_TEXTURE_CUBE)
size *= 6;
else
size *= depth;
ct->buffer_size += size;
width = u_minify(width, 1);
height = u_minify(height, 1);
depth = u_minify(depth, 1);
}
ct->data = align_malloc(ct->buffer_size, 16);
return ct->data != NULL;
}
/**
* Texture layout for simple color buffers.
*/
static boolean
cell_displaytarget_layout(struct pipe_screen *screen,
struct cell_resource * ct)
{
struct sw_winsys *winsys = cell_screen(screen)->winsys;
/* Round up the surface size to a multiple of the tile size?
*/
ct->dt = winsys->displaytarget_create(winsys,
ct->base.bind,
ct->base.format,
ct->base.width0,
ct->base.height0,
16,
&ct->dt_stride );
return ct->dt != NULL;
}
static struct pipe_resource *
cell_resource_create(struct pipe_screen *screen,
const struct pipe_resource *templat)
{
struct cell_resource *ct = CALLOC_STRUCT(cell_resource);
if (!ct)
return NULL;
ct->base = *templat;
pipe_reference_init(&ct->base.reference, 1);
ct->base.screen = screen;
/* Create both a displaytarget (linear) and regular texture
* (twiddled). Convert twiddled->linear at flush_frontbuffer time.
*/
if (ct->base.bind & (PIPE_BIND_DISPLAY_TARGET |
PIPE_BIND_SCANOUT |
PIPE_BIND_SHARED)) {
if (!cell_displaytarget_layout(screen, ct))
goto fail;
}
if (!cell_resource_layout(screen, ct))
goto fail;
return &ct->base;
fail:
if (ct->dt) {
struct sw_winsys *winsys = cell_screen(screen)->winsys;
winsys->displaytarget_destroy(winsys, ct->dt);
}
FREE(ct);
return NULL;
}
static void
cell_resource_destroy(struct pipe_resource *pt)
{
struct cell_screen *screen = cell_screen(pt->screen);
struct sw_winsys *winsys = screen->winsys;
struct cell_resource *ct = cell_resource(pt);
if (ct->dt) {
/* display target */
winsys->displaytarget_destroy(winsys, ct->dt);
}
else if (!ct->userBuffer) {
align_free(ct->data);
}
FREE(ct);
}
/**
* Convert image from linear layout to tiled layout. 4-byte pixels.
*/
static void
twiddle_image_uint(uint w, uint h, uint tile_size, uint *dst,
uint src_stride, const uint *src)
{
const uint tile_size2 = tile_size * tile_size;
const uint h_t = (h + tile_size - 1) / tile_size;
const uint w_t = (w + tile_size - 1) / tile_size;
uint it, jt; /* tile counters */
uint i, j; /* intra-tile counters */
src_stride /= 4; /* convert from bytes to pixels */
/* loop over dest tiles */
for (it = 0; it < h_t; it++) {
for (jt = 0; jt < w_t; jt++) {
/* start of dest tile: */
uint *tdst = dst + (it * w_t + jt) * tile_size2;
/* compute size of this tile (may be smaller than tile_size) */
/* XXX note: a compiler bug was found here. That's why the code
* looks as it does.
*/
uint tile_width = w - jt * tile_size;
tile_width = MIN2(tile_width, tile_size);
uint tile_height = h - it * tile_size;
tile_height = MIN2(tile_height, tile_size);
/* loop over texels in the tile */
for (i = 0; i < tile_height; i++) {
for (j = 0; j < tile_width; j++) {
const uint srci = it * tile_size + i;
const uint srcj = jt * tile_size + j;
ASSERT(srci < h);
ASSERT(srcj < w);
tdst[i * tile_size + j] = src[srci * src_stride + srcj];
}
}
}
}
}
/**
* For Cell. Basically, rearrange the pixels/quads from this layout:
* +--+--+--+--+
* |p0|p1|p2|p3|....
* +--+--+--+--+
*
* to this layout:
* +--+--+
* |p0|p1|....
* +--+--+
* |p2|p3|
* +--+--+
*/
static void
twiddle_tile(const uint *tileIn, uint *tileOut)
{
int y, x;
for (y = 0; y < TILE_SIZE; y+=2) {
for (x = 0; x < TILE_SIZE; x+=2) {
int k = 4 * (y/2 * TILE_SIZE/2 + x/2);
tileOut[y * TILE_SIZE + (x + 0)] = tileIn[k];
tileOut[y * TILE_SIZE + (x + 1)] = tileIn[k+1];
tileOut[(y + 1) * TILE_SIZE + (x + 0)] = tileIn[k+2];
tileOut[(y + 1) * TILE_SIZE + (x + 1)] = tileIn[k+3];
}
}
}
/**
* Convert image from tiled layout to linear layout. 4-byte pixels.
*/
static void
untwiddle_image_uint(uint w, uint h, uint tile_size, uint *dst,
uint dst_stride, const uint *src)
{
const uint tile_size2 = tile_size * tile_size;
const uint h_t = (h + tile_size - 1) / tile_size;
const uint w_t = (w + tile_size - 1) / tile_size;
uint *tile_buf;
uint it, jt; /* tile counters */
uint i, j; /* intra-tile counters */
dst_stride /= 4; /* convert from bytes to pixels */
tile_buf = align_malloc(tile_size * tile_size * 4, 16);
/* loop over src tiles */
for (it = 0; it < h_t; it++) {
for (jt = 0; jt < w_t; jt++) {
/* start of src tile: */
const uint *tsrc = src + (it * w_t + jt) * tile_size2;
twiddle_tile(tsrc, tile_buf);
tsrc = tile_buf;
/* compute size of this tile (may be smaller than tile_size) */
/* XXX note: a compiler bug was found here. That's why the code
* looks as it does.
*/
uint tile_width = w - jt * tile_size;
tile_width = MIN2(tile_width, tile_size);
uint tile_height = h - it * tile_size;
tile_height = MIN2(tile_height, tile_size);
/* loop over texels in the tile */
for (i = 0; i < tile_height; i++) {
for (j = 0; j < tile_width; j++) {
uint dsti = it * tile_size + i;
uint dstj = jt * tile_size + j;
ASSERT(dsti < h);
ASSERT(dstj < w);
dst[dsti * dst_stride + dstj] = tsrc[i * tile_size + j];
}
}
}
}
align_free(tile_buf);
}
static struct pipe_surface *
cell_get_tex_surface(struct pipe_screen *screen,
struct pipe_resource *pt,
unsigned face, unsigned level, unsigned zslice,
unsigned usage)
{
struct cell_resource *ct = cell_resource(pt);
struct pipe_surface *ps;
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->offset = ct->level_offset[level];
/* XXX may need to override usage flags (see sp_texture.c) */
ps->usage = usage;
ps->face = face;
ps->level = level;
ps->zslice = zslice;
if (pt->target == PIPE_TEXTURE_CUBE) {
unsigned h_tile = align(ps->height, TILE_SIZE);
ps->offset += face * util_format_get_nblocksy(ps->format, h_tile) * ct->stride[level];
}
else if (pt->target == PIPE_TEXTURE_3D) {
unsigned h_tile = align(ps->height, TILE_SIZE);
ps->offset += zslice * util_format_get_nblocksy(ps->format, h_tile) * ct->stride[level];
}
else {
assert(face == 0);
assert(zslice == 0);
}
}
return ps;
}
static void
cell_tex_surface_destroy(struct pipe_surface *surf)
{
pipe_resource_reference(&surf->texture, NULL);
FREE(surf);
}
/**
* Create new pipe_transfer object.
* This is used by the user to put tex data into a texture (and get it
* back out for glGetTexImage).
*/
static struct pipe_transfer *
cell_get_transfer(struct pipe_context *ctx,
struct pipe_resource *resource,
struct pipe_subresource sr,
unsigned usage,
const struct pipe_box *box)
{
struct cell_resource *ct = cell_resource(resource);
struct cell_transfer *ctrans;
enum pipe_format *format = resource->format;
assert(resource);
assert(level <= resource->last_level);
/* make sure the requested region is in the image bounds */
assert(box->x + box->width <= u_minify(resource->width0, sr.level));
assert(box->y + box->height <= u_minify(resource->height0, sr.level));
assert(box->z + box->depth <= u_minify(resource->depth0, sr.level));
ctrans = CALLOC_STRUCT(cell_transfer);
if (ctrans) {
struct pipe_transfer *pt = &ctrans->base;
pipe_resource_reference(&pt->resource, resource);
pt->sr = sr;
pt->usage = usage;
pt->box = *box;
pt->stride = ct->stride[sr.level];
ctrans->offset = ct->level_offset[sr.level];
if (resource->target == PIPE_TEXTURE_CUBE) {
unsigned h_tile = align(u_minify(resource->height0, sr.level), TILE_SIZE);
ctrans->offset += sr.face * util_format_get_nblocksy(format, h_tile) * pt->stride;
}
else if (resource->target == PIPE_TEXTURE_3D) {
unsigned h_tile = align(u_minify(resource->height0, sr.level), TILE_SIZE);
ctrans->offset += box->z * util_format_get_nblocksy(format, h_tile) * pt->stride;
}
else {
assert(sr.face == 0);
assert(box->z == 0);
}
return pt;
}
return NULL;
}
static void
cell_transfer_destroy(struct pipe_context *ctx, struct pipe_transfer *t)
{
struct cell_transfer *transfer = cell_transfer(t);
/* 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 cell, nothing to do.
*/
assert (transfer->base.resource);
pipe_resource_reference(&transfer->base.resource, NULL);
FREE(transfer);
}
/**
* Return pointer to texture image data in linear layout.
*/
static void *
cell_transfer_map(struct pipe_context *ctx, struct pipe_transfer *transfer)
{
struct cell_transfer *ctrans = cell_transfer(transfer);
struct pipe_resource *pt = transfer->resource;
struct cell_resource *ct = cell_resource(pt);
assert(transfer->resource);
if (ct->mapped == NULL) {
ct->mapped = ct->data;
}
/* Better test would be resource->is_linear
*/
if (transfer->resource->target != PIPE_BUFFER) {
const uint level = ctrans->base.sr.level;
const uint texWidth = u_minify(pt->width0, level);
const uint texHeight = u_minify(pt->height0, level);
unsigned size;
/*
* Create a buffer of ordinary memory for the linear texture.
* This is the memory that the user will read/write.
*/
size = (util_format_get_stride(pt->format, align(texWidth, TILE_SIZE)) *
util_format_get_nblocksy(pt->format, align(texHeight, TILE_SIZE)));
ctrans->map = align_malloc(size, 16);
if (!ctrans->map)
return NULL; /* out of memory */
if (transfer->usage & PIPE_TRANSFER_READ) {
/* Textures always stored twiddled, need to untwiddle the
* texture to make a linear version.
*/
const uint bpp = util_format_get_blocksize(ct->base.format);
if (bpp == 4) {
const uint *src = (uint *) (ct->mapped + ctrans->offset);
uint *dst = ctrans->map;
untwiddle_image_uint(texWidth, texHeight, TILE_SIZE,
dst, transfer->stride, src);
}
else {
// xxx fix
}
}
}
else {
unsigned stride = transfer->stride;
enum pipe_format format = pt->format;
unsigned blocksize = util_format_get_blocksize(format);
ctrans->map = (ct->mapped +
ctrans->offset +
ctrans->base.box.y / util_format_get_blockheight(format) * stride +
ctrans->base.box.x / util_format_get_blockwidth(format) * blocksize);
}
return ctrans->map;
}
/**
* Called when user is done reading/writing texture data.
* If new data was written, this is where we convert the linear data
* to tiled data.
*/
static void
cell_transfer_unmap(struct pipe_context *ctx,
struct pipe_transfer *transfer)
{
struct cell_transfer *ctrans = cell_transfer(transfer);
struct pipe_resource *pt = transfer->resource;
struct cell_resource *ct = cell_resource(pt);
const uint level = ctrans->base.sr.level;
const uint texWidth = u_minify(pt->width0, level);
const uint texHeight = u_minify(pt->height0, level);
const uint stride = ct->stride[level];
if (!ct->mapped) {
assert(0);
return;
}
if (pt->target != PIPE_BUFFER) {
if (transfer->usage & PIPE_TRANSFER_WRITE) {
/* The user wrote new texture data into the mapped buffer.
* We need to convert the new linear data into the twiddled/tiled format.
*/
const uint bpp = util_format_get_blocksize(ct->base.format);
if (bpp == 4) {
const uint *src = ctrans->map;
uint *dst = (uint *) (ct->mapped + ctrans->offset);
twiddle_image_uint(texWidth, texHeight, TILE_SIZE, dst, stride, src);
}
else {
// xxx fix
}
}
align_free(ctrans->map);
}
else {
/* nothing to do */
}
ctrans->map = NULL;
}
/* This used to be overriden by the co-state tracker, but really needs
* to be active with sw_winsys.
*
* Contrasting with llvmpipe and softpipe, this is the only place
* where we use the ct->dt display target in any real sense.
*
* Basically just untwiddle our local data into the linear
* displaytarget.
*/
static void
cell_flush_frontbuffer(struct pipe_screen *_screen,
struct pipe_surface *surface,
void *context_private)
{
struct cell_screen *screen = cell_screen(_screen);
struct sw_winsys *winsys = screen->winsys;
struct cell_resource *ct = cell_resource(surface->texture);
if (!ct->dt)
return;
/* Need to untwiddle from our internal representation here:
*/
{
unsigned *map = winsys->displaytarget_map(winsys, ct->dt,
(PIPE_TRANSFER_READ |
PIPE_TRANSFER_WRITE));
unsigned *src = (unsigned *)(ct->data + ct->level_offset[surface->level]);
untwiddle_image_uint(surface->width,
surface->height,
TILE_SIZE,
map,
ct->dt_stride,
src);
winsys->displaytarget_unmap(winsys, ct->dt);
}
winsys->displaytarget_display(winsys, ct->dt, context_private);
}
/**
* Create buffer which wraps user-space data.
*/
static struct pipe_resource *
cell_user_buffer_create(struct pipe_screen *screen,
void *ptr,
unsigned bytes,
unsigned bind_flags)
{
struct cell_resource *buffer;
buffer = CALLOC_STRUCT(cell_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 = PIPE_BIND_TRANSFER_READ | 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;
}
void
cell_init_screen_texture_funcs(struct pipe_screen *screen)
{
screen->resource_create = cell_resource_create;
screen->resource_destroy = cell_resource_destroy;
screen->resource_from_handle = cell_resource_from_handle;
screen->resource_get_handle = cell_resource_get_handle;
screen->user_buffer_create = cell_user_buffer_create;
screen->get_tex_surface = cell_get_tex_surface;
screen->tex_surface_destroy = cell_tex_surface_destroy;
screen->flush_frontbuffer = cell_flush_frontbuffer;
}
void
cell_init_transfer_funcs(struct cell_context *cell)
{
cell->pipe.get_transfer = cell_get_transfer;
cell->pipe.transfer_destroy = cell_transfer_destroy;
cell->pipe.transfer_map = cell_transfer_map;
cell->pipe.transfer_unmap = cell_transfer_unmap;
cell->pipe.transfer_flush_region = u_default_transfer_flush_region;
cell->pipe.transfer_inline_write = u_default_transfer_inline_write;
}
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