219 lines
7.5 KiB
C
219 lines
7.5 KiB
C
/*
|
|
* Copyright © 2014 Keith Packard
|
|
*
|
|
* Permission to use, copy, modify, distribute, and sell this software and its
|
|
* documentation for any purpose is hereby granted without fee, provided that
|
|
* the above copyright notice appear in all copies and that both that copyright
|
|
* notice and this permission notice appear in supporting documentation, and
|
|
* that the name of the copyright holders not be used in advertising or
|
|
* publicity pertaining to distribution of the software without specific,
|
|
* written prior permission. The copyright holders make no representations
|
|
* about the suitability of this software for any purpose. It is provided "as
|
|
* is" without express or implied warranty.
|
|
*
|
|
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
|
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
|
|
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
|
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
|
|
* OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include "glamor_priv.h"
|
|
#include "glamor_transfer.h"
|
|
|
|
/*
|
|
* Write a region of bits into a pixmap
|
|
*/
|
|
void
|
|
glamor_upload_boxes(PixmapPtr pixmap, BoxPtr in_boxes, int in_nbox,
|
|
int dx_src, int dy_src,
|
|
int dx_dst, int dy_dst,
|
|
uint8_t *bits, uint32_t byte_stride)
|
|
{
|
|
ScreenPtr screen = pixmap->drawable.pScreen;
|
|
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
|
|
glamor_pixmap_private *priv = glamor_get_pixmap_private(pixmap);
|
|
int box_index;
|
|
int bytes_per_pixel = pixmap->drawable.bitsPerPixel >> 3;
|
|
const struct glamor_format *f = glamor_format_for_pixmap(pixmap);
|
|
|
|
glamor_make_current(glamor_priv);
|
|
|
|
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
|
|
|
|
if (glamor_priv->has_unpack_subimage)
|
|
glPixelStorei(GL_UNPACK_ROW_LENGTH, byte_stride / bytes_per_pixel);
|
|
|
|
glamor_pixmap_loop(priv, box_index) {
|
|
BoxPtr box = glamor_pixmap_box_at(priv, box_index);
|
|
glamor_pixmap_fbo *fbo = glamor_pixmap_fbo_at(priv, box_index);
|
|
BoxPtr boxes = in_boxes;
|
|
int nbox = in_nbox;
|
|
|
|
glamor_bind_texture(glamor_priv, GL_TEXTURE0, fbo, TRUE);
|
|
|
|
while (nbox--) {
|
|
|
|
/* compute drawable coordinates */
|
|
int x1 = MAX(boxes->x1 + dx_dst, box->x1);
|
|
int x2 = MIN(boxes->x2 + dx_dst, box->x2);
|
|
int y1 = MAX(boxes->y1 + dy_dst, box->y1);
|
|
int y2 = MIN(boxes->y2 + dy_dst, box->y2);
|
|
|
|
size_t ofs = (y1 - dy_dst + dy_src) * byte_stride;
|
|
ofs += (x1 - dx_dst + dx_src) * bytes_per_pixel;
|
|
|
|
boxes++;
|
|
|
|
if (x2 <= x1 || y2 <= y1)
|
|
continue;
|
|
|
|
if (glamor_priv->has_unpack_subimage ||
|
|
x2 - x1 == byte_stride / bytes_per_pixel) {
|
|
glTexSubImage2D(GL_TEXTURE_2D, 0,
|
|
x1 - box->x1, y1 - box->y1,
|
|
x2 - x1, y2 - y1,
|
|
f->format, f->type,
|
|
bits + ofs);
|
|
} else {
|
|
for (; y1 < y2; y1++, ofs += byte_stride)
|
|
glTexSubImage2D(GL_TEXTURE_2D, 0,
|
|
x1 - box->x1, y1 - box->y1,
|
|
x2 - x1, 1,
|
|
f->format, f->type,
|
|
bits + ofs);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (glamor_priv->has_unpack_subimage)
|
|
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
|
|
}
|
|
|
|
/*
|
|
* Upload a region of data
|
|
*/
|
|
|
|
void
|
|
glamor_upload_region(PixmapPtr pixmap, RegionPtr region,
|
|
int region_x, int region_y,
|
|
uint8_t *bits, uint32_t byte_stride)
|
|
{
|
|
glamor_upload_boxes(pixmap, RegionRects(region), RegionNumRects(region),
|
|
-region_x, -region_y,
|
|
0, 0,
|
|
bits, byte_stride);
|
|
}
|
|
|
|
/*
|
|
* Take the data in the pixmap and stuff it back into the FBO
|
|
*/
|
|
void
|
|
glamor_upload_pixmap(PixmapPtr pixmap)
|
|
{
|
|
BoxRec box;
|
|
|
|
box.x1 = 0;
|
|
box.x2 = pixmap->drawable.width;
|
|
box.y1 = 0;
|
|
box.y2 = pixmap->drawable.height;
|
|
glamor_upload_boxes(pixmap, &box, 1, 0, 0, 0, 0,
|
|
pixmap->devPrivate.ptr, pixmap->devKind);
|
|
}
|
|
|
|
/*
|
|
* Read stuff from the pixmap FBOs and write to memory
|
|
*/
|
|
void
|
|
glamor_download_boxes(PixmapPtr pixmap, BoxPtr in_boxes, int in_nbox,
|
|
int dx_src, int dy_src,
|
|
int dx_dst, int dy_dst,
|
|
uint8_t *bits, uint32_t byte_stride)
|
|
{
|
|
ScreenPtr screen = pixmap->drawable.pScreen;
|
|
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
|
|
glamor_pixmap_private *priv = glamor_get_pixmap_private(pixmap);
|
|
int box_index;
|
|
int bytes_per_pixel = pixmap->drawable.bitsPerPixel >> 3;
|
|
const struct glamor_format *f = glamor_format_for_pixmap(pixmap);
|
|
|
|
glamor_make_current(glamor_priv);
|
|
|
|
glPixelStorei(GL_PACK_ALIGNMENT, 4);
|
|
if (glamor_priv->has_pack_subimage)
|
|
glPixelStorei(GL_PACK_ROW_LENGTH, byte_stride / bytes_per_pixel);
|
|
|
|
glamor_pixmap_loop(priv, box_index) {
|
|
BoxPtr box = glamor_pixmap_box_at(priv, box_index);
|
|
glamor_pixmap_fbo *fbo = glamor_pixmap_fbo_at(priv, box_index);
|
|
BoxPtr boxes = in_boxes;
|
|
int nbox = in_nbox;
|
|
|
|
/* This should not be called on GLAMOR_FBO_NO_FBO-allocated pixmaps. */
|
|
assert(fbo->fb);
|
|
glBindFramebuffer(GL_FRAMEBUFFER, fbo->fb);
|
|
|
|
while (nbox--) {
|
|
|
|
/* compute drawable coordinates */
|
|
int x1 = MAX(boxes->x1 + dx_src, box->x1);
|
|
int x2 = MIN(boxes->x2 + dx_src, box->x2);
|
|
int y1 = MAX(boxes->y1 + dy_src, box->y1);
|
|
int y2 = MIN(boxes->y2 + dy_src, box->y2);
|
|
size_t ofs = (y1 - dy_src + dy_dst) * byte_stride;
|
|
ofs += (x1 - dx_src + dx_dst) * bytes_per_pixel;
|
|
|
|
boxes++;
|
|
|
|
if (x2 <= x1 || y2 <= y1)
|
|
continue;
|
|
|
|
if (glamor_priv->has_pack_subimage ||
|
|
x2 - x1 == byte_stride / bytes_per_pixel) {
|
|
glReadPixels(x1 - box->x1, y1 - box->y1, x2 - x1, y2 - y1, f->format, f->type, bits + ofs);
|
|
} else {
|
|
for (; y1 < y2; y1++, ofs += byte_stride)
|
|
glReadPixels(x1 - box->x1, y1 - box->y1, x2 - x1, 1, f->format, f->type, bits + ofs);
|
|
}
|
|
}
|
|
}
|
|
if (glamor_priv->has_pack_subimage)
|
|
glPixelStorei(GL_PACK_ROW_LENGTH, 0);
|
|
}
|
|
|
|
/*
|
|
* Read data from the pixmap FBO
|
|
*/
|
|
void
|
|
glamor_download_rect(PixmapPtr pixmap, int x, int y, int w, int h, uint8_t *bits)
|
|
{
|
|
BoxRec box;
|
|
|
|
box.x1 = x;
|
|
box.x2 = x + w;
|
|
box.y1 = y;
|
|
box.y2 = y + h;
|
|
|
|
glamor_download_boxes(pixmap, &box, 1, 0, 0, -x, -y,
|
|
bits, PixmapBytePad(w, pixmap->drawable.depth));
|
|
}
|
|
|
|
/*
|
|
* Pull the data from the FBO down to the pixmap
|
|
*/
|
|
void
|
|
glamor_download_pixmap(PixmapPtr pixmap)
|
|
{
|
|
BoxRec box;
|
|
|
|
box.x1 = 0;
|
|
box.x2 = pixmap->drawable.width;
|
|
box.y1 = 0;
|
|
box.y2 = pixmap->drawable.height;
|
|
|
|
glamor_download_boxes(pixmap, &box, 1, 0, 0, 0, 0,
|
|
pixmap->devPrivate.ptr, pixmap->devKind);
|
|
}
|