mirror of https://github.com/BOINC/boinc.git
78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
// The contents of this file are subject to the BOINC Public License
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// Version 1.0 (the "License"); you may not use this file except in
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// compliance with the License. You may obtain a copy of the License at
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// http://boinc.berkeley.edu/license_1.0.txt
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//
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// Software distributed under the License is distributed on an "AS IS"
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// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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// License for the specific language governing rights and limitations
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// under the License.
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//
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// The Original Code is the Berkeley Open Infrastructure for Network Computing.
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//
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// The Initial Developer of the Original Code is the SETI@home project.
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// Portions created by the SETI@home project are Copyright (C) 2002
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// University of California at Berkeley. All Rights Reserved.
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//
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// Contributor(s):
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//
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#include "graphics_data.h"
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void GRAPHICS_BUFFER::clear() {
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}
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void GRAPHICS_DOUBLE_BUFFER::init(GRAPHICS_BUFFER* _b1, GRAPHICS_BUFFER* _b2) {
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b1 = _b1;
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b2 = _b2;
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}
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GRAPHICS_BUFFER* GRAPHICS_DOUBLE_BUFFER::get_buffer(int state) {
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if (b1->state == state) return b1;
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if (b2->state == state) return b2;
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return 0;
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}
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GRAPHICS_BUFFER* GRAPHICS_DOUBLE_BUFFER::get_render_buffer() {
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GRAPHICS_BUFFER* b, *other;
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b = get_buffer(GB_STATE_RENDERING);
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if (!b) b = get_buffer(GB_STATE_RENDERED);
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if (!b) b = get_buffer(GB_STATE_GENERATED);
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if (b) {
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if (b->state == GB_STATE_RENDERED) {
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other = get_buffer(GB_STATE_GENERATED);
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if (other) {
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b->clear();
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b->state = GB_STATE_IDLE;
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b = other;
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b->state = GB_STATE_RENDERING;
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}
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} else {
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b->state = GB_STATE_RENDERING;
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}
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}
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return b;
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}
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void GRAPHICS_DOUBLE_BUFFER::render_done(GRAPHICS_BUFFER* b) {
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b->state = GB_STATE_RENDERED;
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}
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GRAPHICS_BUFFER* GRAPHICS_DOUBLE_BUFFER::get_generate_buffer(bool first) {
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GRAPHICS_BUFFER* b;
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b = get_buffer(GB_STATE_GENERATING);
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if (!b && first) {
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b = get_buffer(GB_STATE_IDLE);
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if (b) {
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b->state = GB_STATE_GENERATING;
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}
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}
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return b;
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}
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void GRAPHICS_DOUBLE_BUFFER::generate_done(GRAPHICS_BUFFER* b) {
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b->state = GB_STATE_GENERATED;
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}
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