many optimizations

Makefile

@@ -23,9 +23,9 @@ OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 LINUX_GL_LIBS = -lGLEW -lGL -ldl 
 
-CXXFLAGS = -std=c++17 -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends
+CXXFLAGS = -std=c++17 -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends -DIMGUI_DEFINE_MATH_OPERATORS
 CXXFLAGS += -g -Wall -Wformat -O3
-LIBS = -lraw -ljpeg -lpng -ltiff -lz -lm  -DIMGUI -DIMGUI_DEFINE_MATH_OPERATORS
+LIBS = -lraw -ljpeg -lpng -ltiff -lz -lm  -DIMGUI -DIMGUI_DEFINE_MATH_OPERATORS -DCUSTOM_IN_APP_GPU_PROFILER_CONFIG=iagpConfig.h
 
 
 ##---------------------------------------------------------------------

imgui.ini

@@ -1,24 +1,24 @@
 [Window][Image Exif]
 Pos=0,19
-Size=501,2072
+Size=233,1454
 Collapsed=0
-DockId=0x00000003,0
+DockId=0x00000005,0
 
 [Window][Edit Image]
-Pos=3308,19
+Pos=2086,19
-Size=532,2072
+Size=324,1454
 Collapsed=0
 DockId=0x00000002,0
 
 [Window][Image View]
-Pos=503,19
+Pos=235,19
-Size=2803,2072
+Size=1849,1454
 Collapsed=0
 DockId=0x00000004,0
 
 [Window][DockSpaceWindowHost]
 Pos=0,19
-Size=3840,2072
+Size=2410,1454
 Collapsed=0
 
 [Window][Debug##Default]
@@ -276,10 +276,58 @@ Pos=290,135
 Size=700,450
 Collapsed=0
 
-[Docking][Data]
+[Window][Open Image File##filebrowser_109471027310912]
-DockSpace     ID=0xE098E157 Window=0x9E772337 Pos=0,19 Size=3840,2072 Split=X
+Pos=861,431
-  DockNode    ID=0x00000001 Parent=0xE098E157 SizeRef=3306,720 Split=X
+Size=700,450
-    DockNode  ID=0x00000003 Parent=0x00000001 SizeRef=501,720 Selected=0x5593B2D4
+Collapsed=0
-    DockNode  ID=0x00000004 Parent=0x00000001 SizeRef=2803,720 CentralNode=1 Selected=0x9B39CB70
+
-  DockNode    ID=0x00000002 Parent=0xE098E157 SizeRef=532,720 Selected=0x610DAB84
+[Window][###ProfilerWindow]
+Pos=0,1240
+Size=671,851
+Collapsed=0
+DockId=0x00000006,0
+
+[Window][Open Image File##filebrowser_103987528614208]
+Pos=1000,385
+Size=700,450
+Collapsed=0
+
+[Window][Open Image File##filebrowser_102981197480256]
+Pos=1133,650
+Size=700,450
+Collapsed=0
+
+[Window][Export Image As##filebrowser_102981197479776]
+Pos=1570,820
+Size=700,450
+Collapsed=0
+
+[Window][Open Image File##filebrowser_111150851768640]
+Pos=1570,820
+Size=700,450
+Collapsed=0
+
+[Window][Open Image File##filebrowser_104296741056832]
+Pos=1570,820
+Size=700,450
+Collapsed=0
+
+[Window][Open Image File##filebrowser_111251638272320]
+Pos=290,135
+Size=700,450
+Collapsed=0
+
+[Window][Open Image File##filebrowser_94747345662272]
+Pos=290,135
+Size=700,450
+Collapsed=0
+
+[Docking][Data]
+DockSpace       ID=0xE098E157 Window=0x9E772337 Pos=0,19 Size=2410,1454 Split=X
+  DockNode      ID=0x00000001 Parent=0xE098E157 SizeRef=1594,720 Split=X
+    DockNode    ID=0x00000003 Parent=0x00000001 SizeRef=233,720 Split=Y Selected=0x5593B2D4
+      DockNode  ID=0x00000005 Parent=0x00000003 SizeRef=501,706 Selected=0x5593B2D4
+      DockNode  ID=0x00000006 Parent=0x00000003 SizeRef=501,493 Selected=0x00DB98BF
+    DockNode    ID=0x00000004 Parent=0x00000001 SizeRef=1359,720 CentralNode=1 Selected=0x9B39CB70
+  DockNode      ID=0x00000002 Parent=0xE098E157 SizeRef=324,720 Selected=0x610DAB84
 

shaders/diff.frag

@@ -0,0 +1,46 @@
+#version 330 core
+// Or appropriate GLSL version
+
+out vec4 FragColor;
+
+in vec2 TexCoords; // Comes from passthrough.vert
+
+uniform sampler2D texBefore;
+uniform sampler2D texAfter;
+
+uniform float diffBoost = 5.0; // Uniform to control contrast boost
+
+// Basic Luma calculation (Rec.709)
+float Luma(vec3 color) {
+    return dot(color, vec3(0.2126, 0.7152, 0.0722));
+}
+
+void main() {
+    vec3 colorBefore = texture(texBefore, TexCoords).rgb;
+    vec3 colorAfter = texture(texAfter, TexCoords).rgb;
+
+    // Calculate absolute difference per channel
+    vec3 diff = abs(colorAfter - colorBefore);
+
+    // Calculate average difference or luma difference (luma might be better)
+    // float avgDiff = (diff.r + diff.g + diff.b) / 3.0;
+    float lumaDiff = abs(Luma(colorAfter) - Luma(colorBefore));
+
+    // Boost the difference for visibility and clamp
+    float boostedDiff = clamp(lumaDiff * diffBoost, 0.0, 1.0);
+
+    // Output as grayscale
+    FragColor = vec4(vec3(boostedDiff), 1.0);
+
+    // --- Alternative Visualizations ---
+    // // Simple Red highlight for changes:
+    // if (boostedDiff > 0.05) { // Threshold
+    //     FragColor = vec4(1.0, 0.0, 0.0, 1.0);
+    // } else {
+    //     FragColor = vec4(colorBefore, 1.0); // Show original where no change
+    // }
+
+    // // False color based on difference magnitude (example):
+    // vec3 diffColor = vec3(boostedDiff * 2.0, (1.0 - boostedDiff) * 2.0, 0.0); // Example: Red=High diff, Green=Low diff
+    // FragColor = vec4(clamp(diffColor, 0.0, 1.0), 1.0);
+}