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Update stb_rect_pack.h to match dear-imgui (#2870)

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dear-imgui updated the stb_rect_pack which bgfx should match.
Users with the old stb_rect_pack will get an assertion failure with font atlases not being packed properly with latest bgfx.
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Paul Gruenbacher 2022-08-20 20:04:32 -05:00 committed by GitHub
parent f99f972c17
commit e354b14168
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 20 additions and 21 deletions
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41
3rdparty/stb/stb_rect_pack.h vendored
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@ -1,9 +1,19 @@
// stb_rect_pack.h - v1.00 - public domain - rectangle packing
// [DEAR IMGUI]
// This is a slightly modified version of stb_rect_pack.h 1.01.
// Grep for [DEAR IMGUI] to find the changes.
//
// stb_rect_pack.h - v1.01 - public domain - rectangle packing
// Sean Barrett 2014
//
// Useful for e.g. packing rectangular textures into an atlas.
// Does not do rotation.
//
// Before #including,
//
// #define STB_RECT_PACK_IMPLEMENTATION
//
// in the file that you want to have the implementation.
//
// Not necessarily the awesomest packing method, but better than
// the totally naive one in stb_truetype (which is primarily what
// this is meant to replace).
@ -35,6 +45,7 @@
//
// Version history:
//
// 1.01 (2021-07-11) always use large rect mode, expose STBRP__MAXVAL in public section
// 1.00 (2019-02-25) avoid small space waste; gracefully fail too-wide rectangles
// 0.99 (2019-02-07) warning fixes
// 0.11 (2017-03-03) return packing success/fail result
@ -75,11 +86,10 @@ typedef struct stbrp_context stbrp_context;
typedef struct stbrp_node stbrp_node;
typedef struct stbrp_rect stbrp_rect;
#ifdef STBRP_LARGE_RECTS
typedef int stbrp_coord;
#else
typedef unsigned short stbrp_coord;
#endif
#define STBRP__MAXVAL 0x7fffffff
// Mostly for internal use, but this is the maximum supported coordinate value.
STBRP_DEF int stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
// Assign packed locations to rectangles. The rectangles are of type
@ -209,8 +219,10 @@ struct stbrp_context
#ifdef _MSC_VER
#define STBRP__NOTUSED(v) (void)(v)
#define STBRP__CDECL __cdecl
#else
#define STBRP__NOTUSED(v) (void)sizeof(v)
#define STBRP__CDECL
#endif
enum
@ -253,9 +265,6 @@ STBRP_DEF void stbrp_setup_allow_out_of_mem(stbrp_context *context, int allow_ou
STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes)
{
int i;
#ifndef STBRP_LARGE_RECTS
STBRP_ASSERT(width <= 0xffff && height <= 0xffff);
#endif
for (i=0; i < num_nodes-1; ++i)
nodes[i].next = &nodes[i+1];
@ -274,11 +283,7 @@ STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height,
context->extra[0].y = 0;
context->extra[0].next = &context->extra[1];
context->extra[1].x = (stbrp_coord) width;
#ifdef STBRP_LARGE_RECTS
context->extra[1].y = (1<<30);
#else
context->extra[1].y = 65535;
#endif
context->extra[1].next = NULL;
}
@ -424,7 +429,7 @@ static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int widt
if (y <= best_y) {
if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) {
best_x = xpos;
STBRP_ASSERT(y <= best_y);
//STBRP_ASSERT(y <= best_y); [DEAR IMGUI]
best_y = y;
best_waste = waste;
best = prev;
@ -520,7 +525,7 @@ static stbrp__findresult stbrp__skyline_pack_rectangle(stbrp_context *context, i
return res;
}
static int rect_height_compare(const void *a, const void *b)
static int STBRP__CDECL rect_height_compare(const void *a, const void *b)
{
const stbrp_rect *p = (const stbrp_rect *) a;
const stbrp_rect *q = (const stbrp_rect *) b;
@ -531,19 +536,13 @@ static int rect_height_compare(const void *a, const void *b)
return (p->w > q->w) ? -1 : (p->w < q->w);
}
static int rect_original_order(const void *a, const void *b)
static int STBRP__CDECL rect_original_order(const void *a, const void *b)
{
const stbrp_rect *p = (const stbrp_rect *) a;
const stbrp_rect *q = (const stbrp_rect *) b;
return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed);
}
#ifdef STBRP_LARGE_RECTS
#define STBRP__MAXVAL 0xffffffff
#else
#define STBRP__MAXVAL 0xffff
#endif
STBRP_DEF int stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
{
int i, all_rects_packed = 1;