136 lines
4.0 KiB
C
136 lines
4.0 KiB
C
/*
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* Copyright © 2009 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "glamor_priv.h"
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static Bool
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_glamor_get_spans(DrawablePtr drawable,
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int wmax,
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DDXPointPtr points, int *widths, int count, char *dst,
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Bool fallback)
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{
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PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
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GLenum format, type;
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int no_alpha, no_revert;
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glamor_screen_private *glamor_priv =
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glamor_get_screen_private(drawable->pScreen);
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glamor_pixmap_private *pixmap_priv =
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glamor_get_pixmap_private(pixmap);
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glamor_gl_dispatch *dispatch = &glamor_priv->dispatch;
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PixmapPtr temp_pixmap = NULL;
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int i;
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uint8_t *readpixels_dst = (uint8_t *) dst;
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int x_off, y_off;
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if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv)) {
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glamor_fallback("pixmap has no fbo.\n");
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goto fail;
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}
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if (glamor_get_tex_format_type_from_pixmap(pixmap,
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&format,
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&type, &no_alpha,
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&no_revert)) {
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glamor_fallback("unknown depth. %d \n", drawable->depth);
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goto fail;
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}
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glamor_set_destination_pixmap_priv_nc(pixmap_priv);
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glamor_validate_pixmap(pixmap);
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if (glamor_priv->gl_flavor == GLAMOR_GL_ES2
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&& (!glamor_tex_format_is_readable(format) || !no_revert)) {
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/* XXX prepare whole pixmap is not efficient. */
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temp_pixmap =
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glamor_es2_pixmap_read_prepare(pixmap, &format,
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&type, no_alpha,
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no_revert);
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pixmap_priv = glamor_get_pixmap_private(temp_pixmap);
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glamor_set_destination_pixmap_priv_nc(pixmap_priv);
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}
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glamor_get_drawable_deltas(drawable, pixmap, &x_off, &y_off);
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for (i = 0; i < count; i++) {
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if (glamor_priv->yInverted) {
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dispatch->glReadPixels(points[i].x + x_off,
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(points[i].y + y_off),
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widths[i], 1, format,
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type, readpixels_dst);
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} else {
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dispatch->glReadPixels(points[i].x + x_off,
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pixmap->drawable.height -
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1 - (points[i].y + y_off),
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widths[i], 1, format,
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type, readpixels_dst);
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}
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readpixels_dst +=
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PixmapBytePad(widths[i], drawable->depth);
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}
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if (temp_pixmap)
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glamor_destroy_pixmap(temp_pixmap);
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return TRUE;
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fail:
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if (!fallback
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&& glamor_ddx_fallback_check_pixmap(drawable))
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return FALSE;
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glamor_fallback("from %p (%c)\n", drawable,
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glamor_get_drawable_location(drawable));
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if (glamor_prepare_access(drawable, GLAMOR_ACCESS_RO)) {
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fbGetSpans(drawable, wmax, points, widths, count, dst);
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glamor_finish_access(drawable, GLAMOR_ACCESS_RO);
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}
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return TRUE;
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}
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void
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glamor_get_spans(DrawablePtr drawable,
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int wmax,
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DDXPointPtr points, int *widths, int count, char *dst)
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{
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_glamor_get_spans(drawable, wmax, points,
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widths, count, dst, TRUE);
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}
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Bool
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glamor_get_spans_nf(DrawablePtr drawable,
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int wmax,
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DDXPointPtr points, int *widths, int count, char *dst)
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{
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return _glamor_get_spans(drawable, wmax, points,
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widths, count, dst, FALSE);
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}
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