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xserver-multidpi/glamor/glamor_fbo.c

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/*
* Copyright © 2009 Intel Corporation
* Copyright © 1998 Keith Packard
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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:
* Zhigang Gong <zhigang.gong@gmail.com>
*
*/
#include <stdlib.h>
#include "glamor_priv.h"
#define GLAMOR_CACHE_EXPIRE_MAX 100
#define GLAMOR_CACHE_DEFAULT 0
#define GLAMOR_CACHE_EXACT_SIZE 1
//#define NO_FBO_CACHE 1
#define FBO_CACHE_THRESHOLD (256*1024*1024)
/* Loop from the tail to the head. */
#define xorg_list_for_each_entry_reverse(pos, head, member) \
for (pos = __container_of((head)->prev, pos, member); \
&pos->member != (head); \
pos = __container_of(pos->member.prev, pos, member))
#define xorg_list_for_each_entry_safe_reverse(pos, tmp, head, member) \
for (pos = __container_of((head)->prev, pos, member), \
tmp = __container_of(pos->member.prev, pos, member); \
&pos->member != (head); \
pos = tmp, tmp = __container_of(pos->member.prev, tmp, member))
inline static int
cache_wbucket(int size)
{
int order = __fls(size / 32);
if (order >= CACHE_BUCKET_WCOUNT)
order = CACHE_BUCKET_WCOUNT - 1;
return order;
}
inline static int
cache_hbucket(int size)
{
int order = __fls(size / 32);
if (order >= CACHE_BUCKET_HCOUNT)
order = CACHE_BUCKET_HCOUNT - 1;
return order;
}
static glamor_pixmap_fbo *
glamor_pixmap_fbo_cache_get(glamor_screen_private *glamor_priv,
int w, int h, GLenum format, int flag)
{
struct xorg_list *cache;
glamor_pixmap_fbo *fbo_entry, *ret_fbo = NULL;
int n_format;
#ifdef NO_FBO_CACHE
return NULL;
#else
n_format = cache_format(format);
if (n_format == -1)
return NULL;
cache = &glamor_priv->fbo_cache[n_format]
[cache_wbucket(w)]
[cache_hbucket(h)];
if (!(flag & GLAMOR_CACHE_EXACT_SIZE)) {
xorg_list_for_each_entry(fbo_entry, cache, list) {
if (fbo_entry->width >= w && fbo_entry->height >= h) {
DEBUGF("Request w %d h %d format %x \n", w, h, format);
DEBUGF("got cache entry %p w %d h %d fbo %d tex %d format %x\n",
fbo_entry, fbo_entry->width, fbo_entry->height,
fbo_entry->fb, fbo_entry->tex);
xorg_list_del(&fbo_entry->list);
ret_fbo = fbo_entry;
break;
}
}
}
else {
xorg_list_for_each_entry(fbo_entry, cache, list) {
if (fbo_entry->width == w && fbo_entry->height == h) {
DEBUGF("Request w %d h %d format %x \n", w, h, format);
DEBUGF("got cache entry %p w %d h %d fbo %d tex %d format %x\n",
fbo_entry, fbo_entry->width, fbo_entry->height,
fbo_entry->fb, fbo_entry->tex, fbo_entry->format);
assert(format == fbo_entry->format);
xorg_list_del(&fbo_entry->list);
ret_fbo = fbo_entry;
break;
}
}
}
if (ret_fbo)
glamor_priv->fbo_cache_watermark -= ret_fbo->width * ret_fbo->height;
assert(glamor_priv->fbo_cache_watermark >= 0);
return ret_fbo;
#endif
}
void
glamor_purge_fbo(glamor_pixmap_fbo *fbo)
{
glamor_make_current(fbo->glamor_priv);
if (fbo->fb)
glDeleteFramebuffers(1, &fbo->fb);
if (fbo->tex)
glDeleteTextures(1, &fbo->tex);
if (fbo->pbo)
glDeleteBuffers(1, &fbo->pbo);
free(fbo);
}
static void
glamor_pixmap_fbo_cache_put(glamor_pixmap_fbo *fbo)
{
struct xorg_list *cache;
int n_format;
#ifdef NO_FBO_CACHE
glamor_purge_fbo(fbo);
return;
#else
n_format = cache_format(fbo->format);
if (fbo->fb == 0 || n_format == -1
|| fbo->glamor_priv->fbo_cache_watermark >= FBO_CACHE_THRESHOLD) {
fbo->glamor_priv->tick += GLAMOR_CACHE_EXPIRE_MAX;
glamor_fbo_expire(fbo->glamor_priv);
glamor_purge_fbo(fbo);
return;
}
cache = &fbo->glamor_priv->fbo_cache[n_format]
[cache_wbucket(fbo->width)]
[cache_hbucket(fbo->height)];
DEBUGF
("Put cache entry %p to cache %p w %d h %d format %x fbo %d tex %d \n",
fbo, cache, fbo->width, fbo->height, fbo->format, fbo->fb, fbo->tex);
fbo->glamor_priv->fbo_cache_watermark += fbo->width * fbo->height;
xorg_list_add(&fbo->list, cache);
fbo->expire = fbo->glamor_priv->tick + GLAMOR_CACHE_EXPIRE_MAX;
#endif
}
static void
glamor_pixmap_ensure_fb(glamor_pixmap_fbo *fbo)
{
int status;
glamor_make_current(fbo->glamor_priv);
if (fbo->fb == 0)
glGenFramebuffers(1, &fbo->fb);
assert(fbo->tex != 0);
glBindFramebuffer(GL_FRAMEBUFFER, fbo->fb);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, fbo->tex, 0);
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE) {
const char *str;
switch (status) {
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
str = "incomplete attachment";
break;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
str = "incomplete/missing attachment";
break;
case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER:
str = "incomplete draw buffer";
break;
case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER:
str = "incomplete read buffer";
break;
case GL_FRAMEBUFFER_UNSUPPORTED:
str = "unsupported";
break;
case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE:
str = "incomplete multiple";
break;
default:
str = "unknown error";
break;
}
FatalError("destination is framebuffer incomplete: %s [%x]\n",
str, status);
}
}
glamor_pixmap_fbo *
glamor_create_fbo_from_tex(glamor_screen_private *glamor_priv,
int w, int h, GLenum format, GLint tex, int flag)
{
glamor_pixmap_fbo *fbo;
fbo = calloc(1, sizeof(*fbo));
if (fbo == NULL)
return NULL;
xorg_list_init(&fbo->list);
fbo->tex = tex;
fbo->width = w;
fbo->height = h;
fbo->format = format;
fbo->glamor_priv = glamor_priv;
if (flag == GLAMOR_CREATE_PIXMAP_MAP) {
glamor_make_current(glamor_priv);
glGenBuffers(1, &fbo->pbo);
goto done;
}
if (flag != GLAMOR_CREATE_FBO_NO_FBO)
glamor_pixmap_ensure_fb(fbo);
done:
return fbo;
}
void
glamor_fbo_expire(glamor_screen_private *glamor_priv)
{
struct xorg_list *cache;
glamor_pixmap_fbo *fbo_entry, *tmp;
int i, j, k;
for (i = 0; i < CACHE_FORMAT_COUNT; i++)
for (j = 0; j < CACHE_BUCKET_WCOUNT; j++)
for (k = 0; k < CACHE_BUCKET_HCOUNT; k++) {
cache = &glamor_priv->fbo_cache[i][j][k];
xorg_list_for_each_entry_safe_reverse(fbo_entry, tmp, cache,
list) {
if (GLAMOR_TICK_AFTER(fbo_entry->expire, glamor_priv->tick)) {
break;
}
glamor_priv->fbo_cache_watermark -=
fbo_entry->width * fbo_entry->height;
xorg_list_del(&fbo_entry->list);
DEBUGF("cache %p fbo %p expired %d current %d \n", cache,
fbo_entry, fbo_entry->expire, glamor_priv->tick);
glamor_purge_fbo(fbo_entry);
}
}
}
void
glamor_init_pixmap_fbo(ScreenPtr screen)
{
glamor_screen_private *glamor_priv;
int i, j, k;
glamor_priv = glamor_get_screen_private(screen);
for (i = 0; i < CACHE_FORMAT_COUNT; i++)
for (j = 0; j < CACHE_BUCKET_WCOUNT; j++)
for (k = 0; k < CACHE_BUCKET_HCOUNT; k++) {
xorg_list_init(&glamor_priv->fbo_cache[i][j][k]);
}
glamor_priv->fbo_cache_watermark = 0;
}
void
glamor_fini_pixmap_fbo(ScreenPtr screen)
{
struct xorg_list *cache;
glamor_screen_private *glamor_priv;
glamor_pixmap_fbo *fbo_entry, *tmp;
int i, j, k;
glamor_priv = glamor_get_screen_private(screen);
for (i = 0; i < CACHE_FORMAT_COUNT; i++)
for (j = 0; j < CACHE_BUCKET_WCOUNT; j++)
for (k = 0; k < CACHE_BUCKET_HCOUNT; k++) {
cache = &glamor_priv->fbo_cache[i][j][k];
xorg_list_for_each_entry_safe_reverse(fbo_entry, tmp, cache,
list) {
xorg_list_del(&fbo_entry->list);
glamor_purge_fbo(fbo_entry);
}
}
}
void
glamor_destroy_fbo(glamor_pixmap_fbo *fbo)
{
xorg_list_del(&fbo->list);
glamor_pixmap_fbo_cache_put(fbo);
}
static int
_glamor_create_tex(glamor_screen_private *glamor_priv,
int w, int h, GLenum format)
{
unsigned int tex = 0;
/* With dri3, we want to allocate ARGB8888 pixmaps only.
* Depending on the implementation, GL_RGBA might not
* give us ARGB8888. We ask glamor_egl to use get
* an ARGB8888 based texture for us. */
if (glamor_priv->dri3_enabled && format == GL_RGBA) {
tex = glamor_egl_create_argb8888_based_texture(glamor_priv->screen,
w, h);
}
if (!tex) {
glamor_make_current(glamor_priv);
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, format, w, h, 0,
format, GL_UNSIGNED_BYTE, NULL);
}
return tex;
}
glamor_pixmap_fbo *
glamor_create_fbo(glamor_screen_private *glamor_priv,
int w, int h, GLenum format, int flag)
{
glamor_pixmap_fbo *fbo;
GLint tex = 0;
int cache_flag;
if (flag == GLAMOR_CREATE_FBO_NO_FBO)
goto new_fbo;
if (flag == GLAMOR_CREATE_PIXMAP_MAP)
goto no_tex;
/* Tiling from textures requires exact pixmap sizes. As we don't
* know which pixmaps will be used as tiles, just allocate
* everything at the requested size
*/
cache_flag = GLAMOR_CACHE_EXACT_SIZE;
fbo = glamor_pixmap_fbo_cache_get(glamor_priv, w, h, format, cache_flag);
if (fbo)
return fbo;
new_fbo:
tex = _glamor_create_tex(glamor_priv, w, h, format);
no_tex:
fbo = glamor_create_fbo_from_tex(glamor_priv, w, h, format, tex, flag);
return fbo;
}
static glamor_pixmap_fbo *
_glamor_create_fbo_array(glamor_screen_private *glamor_priv,
int w, int h, GLenum format, int flag,
int block_w, int block_h,
glamor_pixmap_private *pixmap_priv, int has_fbo)
{
int block_wcnt;
int block_hcnt;
glamor_pixmap_fbo **fbo_array;
BoxPtr box_array;
int i, j;
glamor_pixmap_private_large_t *priv;
priv = &pixmap_priv->large;
block_wcnt = (w + block_w - 1) / block_w;
block_hcnt = (h + block_h - 1) / block_h;
box_array = calloc(block_wcnt * block_hcnt, sizeof(box_array[0]));
if (box_array == NULL)
return NULL;
fbo_array = calloc(block_wcnt * block_hcnt, sizeof(glamor_pixmap_fbo *));
if (fbo_array == NULL) {
free(box_array);
return FALSE;
}
for (i = 0; i < block_hcnt; i++) {
int block_y1, block_y2;
int fbo_w, fbo_h;
block_y1 = i * block_h;
block_y2 = (block_y1 + block_h) > h ? h : (block_y1 + block_h);
fbo_h = block_y2 - block_y1;
for (j = 0; j < block_wcnt; j++) {
box_array[i * block_wcnt + j].x1 = j * block_w;
box_array[i * block_wcnt + j].y1 = block_y1;
box_array[i * block_wcnt + j].x2 =
(j + 1) * block_w > w ? w : (j + 1) * block_w;
box_array[i * block_wcnt + j].y2 = block_y2;
fbo_w =
box_array[i * block_wcnt + j].x2 - box_array[i * block_wcnt +
j].x1;
if (!has_fbo)
fbo_array[i * block_wcnt + j] = glamor_create_fbo(glamor_priv,
fbo_w, fbo_h,
format,
GLAMOR_CREATE_PIXMAP_FIXUP);
else
fbo_array[i * block_wcnt + j] = priv->base.fbo;
if (fbo_array[i * block_wcnt + j] == NULL)
goto cleanup;
}
}
priv->box = box_array[0];
priv->box_array = box_array;
priv->fbo_array = fbo_array;
priv->block_wcnt = block_wcnt;
priv->block_hcnt = block_hcnt;
return fbo_array[0];
cleanup:
for (i = 0; i < block_wcnt * block_hcnt; i++)
if ((fbo_array)[i])
glamor_destroy_fbo((fbo_array)[i]);
free(box_array);
free(fbo_array);
return NULL;
}
/* Create a fbo array to cover the w*h region, by using block_w*block_h
* block.*/
glamor_pixmap_fbo *
glamor_create_fbo_array(glamor_screen_private *glamor_priv,
int w, int h, GLenum format, int flag,
int block_w, int block_h,
glamor_pixmap_private *pixmap_priv)
{
pixmap_priv->large.block_w = block_w;
pixmap_priv->large.block_h = block_h;
return _glamor_create_fbo_array(glamor_priv, w, h, format, flag,
block_w, block_h, pixmap_priv, 0);
}
glamor_pixmap_fbo *
glamor_pixmap_detach_fbo(glamor_pixmap_private *pixmap_priv)
{
glamor_pixmap_fbo *fbo;
if (pixmap_priv == NULL)
return NULL;
fbo = pixmap_priv->base.fbo;
if (fbo == NULL)
return NULL;
pixmap_priv->base.fbo = NULL;
return fbo;
}
/* The pixmap must not be attached to another fbo. */
void
glamor_pixmap_attach_fbo(PixmapPtr pixmap, glamor_pixmap_fbo *fbo)
{
glamor_pixmap_private *pixmap_priv;
pixmap_priv = glamor_get_pixmap_private(pixmap);
if (pixmap_priv->base.fbo)
return;
pixmap_priv->base.fbo = fbo;
switch (pixmap_priv->type) {
case GLAMOR_TEXTURE_LARGE:
case GLAMOR_TEXTURE_ONLY:
case GLAMOR_TEXTURE_DRM:
pixmap_priv->base.gl_fbo = GLAMOR_FBO_NORMAL;
if (fbo->tex != 0)
pixmap_priv->base.gl_tex = 1;
else {
/* XXX For the Xephyr only, may be broken now. */
pixmap_priv->base.gl_tex = 0;
}
case GLAMOR_MEMORY_MAP:
pixmap->devPrivate.ptr = NULL;
break;
default:
break;
}
}
void
glamor_pixmap_destroy_fbo(glamor_pixmap_private *priv)
{
glamor_pixmap_fbo *fbo;
if (priv->type == GLAMOR_TEXTURE_LARGE) {
int i;
glamor_pixmap_private_large_t *large = &priv->large;
for (i = 0; i < large->block_wcnt * large->block_hcnt; i++)
glamor_destroy_fbo(large->fbo_array[i]);
free(large->fbo_array);
}
else {
fbo = glamor_pixmap_detach_fbo(priv);
if (fbo)
glamor_destroy_fbo(fbo);
}
free(priv);
}
Bool
glamor_pixmap_ensure_fbo(PixmapPtr pixmap, GLenum format, int flag)
{
glamor_screen_private *glamor_priv;
glamor_pixmap_private *pixmap_priv;
glamor_pixmap_fbo *fbo;
glamor_priv = glamor_get_screen_private(pixmap->drawable.pScreen);
pixmap_priv = glamor_get_pixmap_private(pixmap);
if (pixmap_priv->base.fbo == NULL) {
fbo = glamor_create_fbo(glamor_priv, pixmap->drawable.width,
pixmap->drawable.height, format, flag);
if (fbo == NULL)
return FALSE;
glamor_pixmap_attach_fbo(pixmap, fbo);
}
else {
/* We do have a fbo, but it may lack of fb or tex. */
if (!pixmap_priv->base.fbo->tex)
pixmap_priv->base.fbo->tex =
_glamor_create_tex(glamor_priv, pixmap->drawable.width,
pixmap->drawable.height, format);
if (flag != GLAMOR_CREATE_FBO_NO_FBO && pixmap_priv->base.fbo->fb == 0)
glamor_pixmap_ensure_fb(pixmap_priv->base.fbo);
}
return TRUE;
}
_X_EXPORT void
glamor_pixmap_exchange_fbos(PixmapPtr front, PixmapPtr back)
{
glamor_pixmap_private *front_priv, *back_priv;
glamor_pixmap_fbo *temp_fbo;
front_priv = glamor_get_pixmap_private(front);
back_priv = glamor_get_pixmap_private(back);
temp_fbo = front_priv->base.fbo;
front_priv->base.fbo = back_priv->base.fbo;
back_priv->base.fbo = temp_fbo;
}
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