mirror of https://github.com/BOINC/boinc.git
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#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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