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Implement EFFECT_ZOOM_LR and EFFECT_ZOOM_RL

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Used in Sengoku Rance.

These are implemented using DrawGraph primitives since it's simpler than
writing a shader in this case.
This commit is contained in:
Nunuhara Cabbage
2022-05-01 11:43:24 -07:00
parent 8d381dbf49
commit 237fbebcf5
2 changed files with 44 additions and 11 deletions
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include/effect.h
+1 -1
View File
@@ -61,7 +61,7 @@ enum effect {
EFFECT_VERTICAL_BAR_BLUR_HD = 41,
EFFECT_AMAP_CROSSFADE2 = 42,
EFFECT_ZOOM_LR = 43,
EFFECT_ZOOR_RL = 44,
EFFECT_ZOOM_RL = 44,
EFFECT_CROSSFADE_LR = 45,
EFFECT_CROSSFADE_RL = 46,
EFFECT_PIXEL_EXPLOSION = 47,
src/effect.c
+43 -10
View File
@@ -14,6 +14,7 @@
* along with this program; if not, see <http://gnu.org/licenses/>.
*/
#include <math.h>
#include <SDL.h>
#include "effect.h"
#include "gfx/gfx.h"
@@ -65,7 +66,7 @@ const char *effect_names[NR_EFFECTS] = {
[EFFECT_VERTICAL_BAR_BLUR_HD] = "EFFECT_VERTICAL_BAR_BLUR_HD",
[EFFECT_AMAP_CROSSFADE2] = "EFFECT_AMAP_CROSSFADE2",
[EFFECT_ZOOM_LR] = "EFFECT_ZOOM_LR",
[EFFECT_ZOOR_RL] = "EFFECT_ZOOR_RL",
[EFFECT_ZOOM_RL] = "EFFECT_ZOOM_RL",
[EFFECT_CROSSFADE_LR] = "EFFECT_CROSSFADE_LR",
[EFFECT_CROSSFADE_RL] = "EFFECT_CROSSFADE_RL",
[EFFECT_PIXEL_EXPLOSION] = "EFFECT_PIXEL_EXPLOSION",
@@ -161,21 +162,49 @@ static struct {
Texture new;
} effect = {0};
static void effect_zoom_lr(float rate)
{
Texture *dst = gfx_main_surface();
unsigned x_pos = roundf(dst->w * rate);
gfx_copy_stretch(dst, x_pos, 0, dst->w-x_pos, dst->h, &effect.old, 0, 0, effect.old.w, effect.old.h);
gfx_copy_stretch(dst, 0, 0, x_pos, dst->h, &effect.new, 0, 0, effect.new.w, effect.new.h);
}
static void effect_zoom_rl(float rate)
{
Texture *dst = gfx_main_surface();
unsigned x_pos = dst->w - roundf(dst->w * rate);
gfx_copy_stretch(dst, x_pos, 0, dst->w-x_pos, dst->h, &effect.new, 0, 0, effect.new.w, effect.new.h);
gfx_copy_stretch(dst, 0, 0, x_pos, dst->h, &effect.old, 0, 0, effect.old.w, effect.old.h);
}
typedef void (*effect_fun)(float rate);
static effect_fun effect_functions[NR_EFFECTS] = {
[EFFECT_ZOOM_LR] = effect_zoom_lr,
[EFFECT_ZOOM_RL] = effect_zoom_rl,
};
int sact_TRANS_Begin(int type)
{
if (type <= 0 || type >= NR_EFFECTS) {
WARNING("Invalid or unknown effect: %d", type);
return 0;
}
struct effect_shader *s = effect_shaders[type];
if (!s) {
WARNING("Unimplemented effect: %s", effect_names[type]);
type = EFFECT_BLUR_CROSSFADE;
s = effect_shaders[type];
if (effect_functions[type]) {
// nothing to do
}
// load shader lazily
if (!s->s.program) {
load_effect_shader(s);
else {
struct effect_shader *s = effect_shaders[type];
if (!s) {
WARNING("Unimplemented effect: %s", effect_names[type]);
type = EFFECT_BLUR_CROSSFADE;
s = effect_shaders[type];
}
// load shader lazily
if (!s->s.program) {
load_effect_shader(s);
}
}
effect.on = true;
@@ -192,7 +221,11 @@ int sact_TRANS_Update(float rate)
return 0;
}
gfx_clear();
render_effect_shader(effect_shaders[effect.type], &effect.old, &effect.new, rate);
if (effect_functions[effect.type]) {
effect_functions[effect.type](rate);
} else {
render_effect_shader(effect_shaders[effect.type], &effect.old, &effect.new, rate);
}
gfx_swap();
return 1;
}