Allow to apply gamma-correction to Palette for performance reason

DrA1ex · Feb 2, 2024 · 2d592c8 · 2d592c8
1 parent 39237f6
commit 2d592c8
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Showing 4 changed files with 23 additions and 3 deletions.
diff --git a/src/application.cpp b/src/application.cpp
@@ -1,6 +1,7 @@
 #include "application.h"
 
 #include "night_mode.h"
+#include "sys_macro.h"
 
 #include "fx/fx.h"
 #include "fx/palette.h"
@@ -33,6 +34,12 @@ void Application::load() {
     } else {
         current_palette = palette->value;
     }
+
+#if GAMMA_CORRECTION_RT == DISABLED
+    if (config.gamma != 0) {
+        napplyGamma_video(current_palette.entries, 16, GAMMA_V(config.gamma));
+    }
+#endif
 }
 
 void Application::update() {

diff --git a/src/constants.h b/src/constants.h
@@ -29,4 +29,8 @@
 #define HEIGHT                                  (16u)
 
 #define CALIBRATION_TIMEOUT                     (5000u)                 // Timeout for calibration mode
-#define POWER_CHANGE_TIMEOUT                    (1000u)                 // Timeout for power change animation
+#define POWER_CHANGE_TIMEOUT                    (1000u)                 // Timeout for power change animation
+
+#define GAMMA_CORRECTION_RT                     DISABLED                // Real-time gamma correction.
+                                                                        // Warning: rt-correction may have significant performance impact
+                                                                        // when disabled - gamma correction will be applied to palette
diff --git a/src/fx/color_efect.cpp b/src/fx/color_efect.cpp
@@ -1,5 +1,7 @@
 #include "color_effect.h"
 
+#include "sys_macro.h"
+
 #include "misc/led.h"
 #include "utils/palette.h"
 
@@ -30,8 +32,13 @@ void ColorEffectManager::call(Led &led, const PaletteT *palette, const PresetCon
     _state.params.scale = config.scale;
     _state.params.palette = palette;
 
+#if GAMMA_CORRECTION_RT == ENABLED
     _state.params.gamma_correction = gamma > 0;
-    _state.params.gamma = 2.2f + (float) (gamma - 128) / 128.f;
+    _state.params.gamma = GAMMA_V(gamma);
+#else
+    _state.params.gamma_correction = false;
+    _state.params.gamma = 0;
+#endif
 
     _config.entries[(int) _fx].value(led, _state);
     _after_call();

diff --git a/src/sys_macro.h b/src/sys_macro.h
@@ -6,4 +6,6 @@
 #define BUTTON_FN(x) (x)
 #else
 #define BUTTON_FN(x)
-#endif
+#endif
+
+#define GAMMA_V(x) (2.2f + (float) (x - 128) / 128.f)