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[client] util: add function for merging overlapping rectangles

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This will be used to merge overlapping rectangles in order to avoid copying
the same rectangles multiple times.
This commit is contained in:
Quantum
2021-07-13 02:45:15 -04:00
committed by Geoffrey McRae
parent 92706caddc
commit 12cb3e512f
2 changed files with 47 additions and 0 deletions
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4
client/include/util.h
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@@ -25,6 +25,9 @@
#include <stdbool.h>
#include "common/types.h"
#define min(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _a < _b ? _a : _b; })
#define max(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _a > _b ? _a : _b; })
// reads the specified file into a new buffer
// the callee must free the buffer
bool util_fileGetContents(const char * filename, char ** buffer, size_t * length);
@@ -34,6 +37,7 @@ bool util_guestCurToLocal(struct DoublePoint *local);
void util_localCurToGuest(struct DoublePoint *guest);
void util_rotatePoint(struct DoublePoint *point);
bool util_hasGLExt(const char * exts, const char * ext);
int util_mergeOverlappingRects(FrameDamageRect * out, const FrameDamageRect * rects, int count);
static inline double util_clamp(double x, double min, double max)
{