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virtio-gpu: replace PIXMAN for region/rect test
Use a simpler implementation for rectangle geometry & intersect, drop the need for (more complex) PIXMAN functions. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com>
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Original file line number | Diff line number | Diff line change |
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/* | ||
* SPDX-License-Identifier: GPL-2.0-or-later | ||
*/ | ||
#ifndef QEMU_RECT_H | ||
#define QEMU_RECT_H | ||
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#include <stdint.h> | ||
#include <stdbool.h> | ||
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typedef struct QemuRect { | ||
int16_t x; | ||
int16_t y; | ||
uint16_t width; | ||
uint16_t height; | ||
} QemuRect; | ||
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static inline void qemu_rect_init(QemuRect *rect, | ||
int16_t x, int16_t y, | ||
uint16_t width, uint16_t height) | ||
{ | ||
rect->x = x; | ||
rect->y = x; | ||
rect->width = width; | ||
rect->height = height; | ||
} | ||
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static inline void qemu_rect_translate(QemuRect *rect, | ||
int16_t dx, int16_t dy) | ||
{ | ||
rect->x += dx; | ||
rect->y += dy; | ||
} | ||
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static inline bool qemu_rect_intersect(const QemuRect *a, const QemuRect *b, | ||
QemuRect *res) | ||
{ | ||
int16_t x1, x2, y1, y2; | ||
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x1 = MAX(a->x, b->x); | ||
y1 = MAX(a->y, b->y); | ||
x2 = MIN(a->x + a->width, b->x + b->width); | ||
y2 = MIN(a->y + a->height, b->y + b->height); | ||
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if (x1 >= x2 || y1 >= y2) { | ||
if (res) { | ||
qemu_rect_init(res, 0, 0, 0, 0); | ||
} | ||
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return false; | ||
} | ||
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if (res) { | ||
qemu_rect_init(res, x1, y1, x2 - x1, y2 - y1); | ||
} | ||
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return true; | ||
} | ||
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#endif |