PonyMirrors/libsuperderpy
1
0
Fork 0
mirror of https://gitlab.com/dosowisko.net/libsuperderpy.git synced 2025-02-01 11:06:44 +01:00
Code Issues Projects Releases Packages Wiki Activity

add ClearToColor util for clearing whole target bitmap, not just the clipping rectangle

Browse source 
Clearing the clipping rectangle can be very costly, while clearing a whole texture is often free.
This commit is contained in:
Sebastian Krzyszkowiak 2018-11-27 02:50:16 +01:00
parent d20eb28814
commit 9611be3267
No known key found for this signature in database
GPG key ID: E8F235CF3BDBC3FF
2 changed files with 16 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
src/utils.c
View file

@ -128,6 +128,19 @@ SYMBOL_EXPORT void DrawCenteredTintedScaled(ALLEGRO_BITMAP* bitmap, ALLEGRO_COLO
x, y, sx, sy, 0, flags);
}
SYMBOL_EXPORT void ClearToColor(struct Game* game, ALLEGRO_COLOR color) {
ALLEGRO_BITMAP* target = al_get_target_bitmap();
if (GetFramebuffer(game) == target && al_get_parent_bitmap(target) == al_get_backbuffer(game->display)) {
al_set_target_backbuffer(game->display);
}
int x, y, w, h;
al_get_clipping_rectangle(&x, &y, &w, &h);
al_reset_clipping_rectangle();
al_clear_to_color(color);
al_set_clipping_rectangle(x, y, w, h);
al_set_target_bitmap(target);
}
/* linear filtering code written by SiegeLord */
SYMBOL_EXPORT ALLEGRO_COLOR InterpolateColor(ALLEGRO_COLOR c1, ALLEGRO_COLOR c2, float frac) {
return al_map_rgba_f(c1.r + frac * (c2.r - c1.r),

3
src/utils.h
View file

@ -56,6 +56,9 @@ void DrawCentered(ALLEGRO_BITMAP* bitmap, int x, int y, int flags);
void DrawCenteredScaled(ALLEGRO_BITMAP* bitmap, int x, int y, double sx, double sy, int flags);
void DrawCenteredTintedScaled(ALLEGRO_BITMAP* bitmap, ALLEGRO_COLOR tint, int x, int y, double sx, double sy, int flags);
/*! \brief Clears the current target completely, without taking current clipping rectangle into account. */
void ClearToColor(struct Game* game, ALLEGRO_COLOR color);
ALLEGRO_COLOR InterpolateColor(ALLEGRO_COLOR c1, ALLEGRO_COLOR c2, float frac);
void ScaleBitmap(ALLEGRO_BITMAP* source, int width, int height);