new needs_redraw system

1 files changed, 46 insertions, 4 deletions

diff --git a/src/fshader_post.glsl b/src/fshader_post.glsl
index 2c26d95..c540f0d 100644
--- a/src/fshader_post.glsl
+++ b/src/fshader_post.glsl
@@ -5,20 +5,62 @@ uniform float u_aspect_ratio;
 uniform float u_menu_scale;
 uniform vec2 u_highlight_button;
 IN vec2 uv;
+uniform vec4 u_flash;
+uniform int u_flash_icon;
+
+#define ICON_COPY 1
+#define ICON_PLAY 2
+#define ICON_PAUSE 3
+#define ICON_REWIND 4
+#define ICON_SCREENSHOT 5
+
+bool play_icon(vec2 pos) {
+	vec2 a = abs(pos);
+	if (a.x >= 0.5 || a.y >= 0.5)
+		return false;
+	return a.y < 0.25 + 0.5 * pos.x;
+}
+
+bool get_icon(vec2 pos) {
+	bool icon = false;
+	switch (u_flash_icon) {
+	case 0: break;
+	case ICON_COPY:
+	case ICON_SCREENSHOT:
+		icon = abs(pos.x) > u_aspect_ratio - 0.1 || abs(pos.y) > 0.9;
+		break;
+	case ICON_PLAY:
+		icon = play_icon(pos);
+		break;
+	case ICON_REWIND:
+		icon = play_icon(vec2(-pos.x, pos.y));
+		break;
+	case ICON_PAUSE:
+		vec2 p = abs(pos);
+		icon = p.x >= 0.1 && p.x <= 0.4 && p.y <= 0.5;
+		break;
+	}
+	return icon;
+}
 
 void main() {
+	vec3 color = texture(u_main_texture, uv).xyz;
+	
+	if (get_icon((uv * 2.0 - 1.0) * vec2(u_aspect_ratio, 1.0)))
+		color = mix(color, u_flash.xyz, u_flash.w);
+	
 	// amount to darken screen by when paused
 	float pause_darkening = 0.5;
-	vec4 color = texture(u_main_texture, uv) * (1.0 - pause_darkening * u_paused);
+	color *= 1.0 - pause_darkening * u_paused;
 	vec2 menu_uv = (uv * 2.0 - 1.0) * vec2(1.0, -1.0);
 	menu_uv *= 1.0 / u_menu_scale;
 	menu_uv = menu_uv * vec2(u_aspect_ratio, 1.0);
 	menu_uv = 0.5 * menu_uv + 0.5;
 	float menu_pixel = u_paused * texture(u_menu_texture, menu_uv).x;
-	vec4 menu_color = vec4(1.0);
+	vec3 menu_color = vec3(1.0);
 	if (uv.y >= u_highlight_button.x && uv.y <= u_highlight_button.y) {
-		menu_color = vec4(1.0, 0.5, 0.0, 1.0); // highlight button
+		menu_color = vec3(1.0, 0.5, 0.0); // highlight button
 	}
 	color = mix(color, menu_color, menu_pixel);
-	gl_FragColor = clamp(color, 0.0, 1.0);
+	gl_FragColor = vec4(clamp(color, 0.0, 1.0), 1.0);
 }