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some steps for better mt support

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This commit is contained in:
vurtun 2015-12-08 23:27:47 +01:00
parent 330a77f27e
commit ef1be011d7
2 changed files with 28 additions and 15 deletions
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33
zahnrad.c
View File

@ -2203,6 +2203,22 @@ zr_command_queue_next(struct zr_command_queue *queue, const struct zr_command *c
*
* ===============================================================*/
#if ZR_COMPILE_WITH_VERTEX_BUFFER
static struct zr_vec2 zr_circle_vtx[12];
static int zr_circle_vtx_builds = zr_false;
static const int zr_circle_vtx_count = ZR_LEN(zr_circle_vtx);
void
zr_draw_list_setup(zr_sin_f sine, zr_cos_f cosine)
{
int i = 0;
for (i = 0; i < zr_circle_vtx_count; ++i) {
const float a = ((float)i / (float)zr_circle_vtx_count) * 2 * ZR_PI;
zr_circle_vtx[i].x = cosine(a);
zr_circle_vtx[i].y = sine(a);
}
zr_circle_vtx_builds = zr_true;
}
void
zr_draw_list_init(struct zr_draw_list *list, struct zr_buffer *cmds,
struct zr_buffer *vertexes, struct zr_buffer *elements,
@ -3068,26 +3084,15 @@ static void
zr_draw_list_path_arc_to_fast(struct zr_draw_list *list, struct zr_vec2 center,
float radius, int a_min, int a_max)
{
static struct zr_vec2 circle_vtx[12];
static int circle_vtx_builds = zr_false;
static const int circle_vtx_count = ZR_LEN(circle_vtx);
ZR_ASSERT(list);
if (!list) return;
if (!circle_vtx_builds) {
int i = 0;
for (i = 0; i < circle_vtx_count; ++i) {
const float a = ((float)i / (float)circle_vtx_count) * 2 * ZR_PI;
circle_vtx[i].x = list->cos(a);
circle_vtx[i].y = list->sin(a);
}
circle_vtx_builds = zr_true;
}
if (!zr_circle_vtx_builds)
zr_draw_list_setup(list->sin, list->cos);
if (a_min <= a_max) {
int a = 0;
for (a = a_min; a <= a_max; a++) {
const struct zr_vec2 c = circle_vtx[a % circle_vtx_count];
const struct zr_vec2 c = zr_circle_vtx[a % zr_circle_vtx_count];
const float x = center.x + c.x * radius;
const float y = center.y + c.y * radius;
zr_draw_list_path_line_to(list, zr_vec2(x, y));

10
zahnrad.h
View File

@ -1145,6 +1145,13 @@ struct zr_draw_list {
/* ---------------------------------------------------------------
* MAIN
* ---------------------------------------------------------------*/
void zr_draw_list_setup(zr_sin_f sine, zr_cos_f cosine);
/* this function setups global lookup tables.
* IMPORTANT: only needs to be called if you call the draw list API in a multithreaded fashion
Input:
- sine function callback since this library does not use clib (default: just use sinf)
- cosine function callback since this library does not use clib (default: just use cosf)
*/
void zr_draw_list_init(struct zr_draw_list*, struct zr_buffer *cmds,
struct zr_buffer *vertexes, struct zr_buffer *elements,
zr_sin_f, zr_cos_f, struct zr_draw_null_texture,
@ -1485,7 +1492,8 @@ const zr_rune *zr_font_chinese_glyph_ranges(void);
const zr_rune *zr_font_cyrillic_glyph_ranges(void);
const zr_rune *zr_font_korean_glyph_ranges(void);
const zr_rune* zr_font_japanese_glyph_range(void);
/* if you want to call zr_font_japanese_glyph_range with multithreading
* please call it once without to initialize the internal lookup table */
/* ---------------------------------------------------------------
* BAKING
* ---------------------------------------------------------------*/