REVIEWED: shaders_multi_sample2d

examples/shaders/resources/shaders/glsl100/color_mix.fs

@@ -11,6 +11,8 @@ uniform sampler2D texture0;
 uniform sampler2D texture1;
 uniform vec4 colDiffuse;
 
+uniform float divider;
+
 void main()
 {
     // Texel color fetching from texture sampler
@@ -18,7 +20,7 @@ void main()
     vec4 texelColor1 = texture2D(texture1, fragTexCoord);
     
     float x = fract(fragTexCoord.s);
-    float out = smoothstep(0.4, 0.6, x);
+    float final = smoothstep(divider - 0.1, divider + 0.1, x);
     
-    gl_FragColor = mix(texelColor0, texelColor1, out);
-}
+    gl_FragColor = mix(texelColor0, texelColor1, final);
+}

examples/shaders/resources/shaders/glsl330/color_mix.fs

@@ -10,6 +10,8 @@ uniform sampler2D texture0;
 uniform sampler2D texture1;
 uniform vec4 colDiffuse;
 
+uniform float divider = 0.5;
+
 out vec4 finalColor;
 
 void main()
@@ -19,7 +21,7 @@ void main()
     vec4 texelColor1 = texture(texture1, fragTexCoord);
 
     float x = fract(fragTexCoord.s);
-    float outVal = smoothstep(0.4, 0.6, x);
+    float final = smoothstep(divider - 0.1, divider + 0.1, x);
     
-    finalColor = mix(texelColor0, texelColor1, outVal);
+    finalColor = mix(texelColor0, texelColor1, final);
 }

examples/shaders/shaders_multi_sample2d.c

@@ -45,6 +45,10 @@ int main(void)
     
     // Get an additional sampler2D location to be enabled on drawing
     int texBlueLoc = GetShaderLocation(shader, "texture1");
+    
+    // Get shader uniform for divider
+    int dividerLoc = GetShaderLocation(shader, "divider");
+    float dividerValue = 0.5f;
 
     SetTargetFPS(60);                           // Set our game to run at 60 frames-per-second
     //--------------------------------------------------------------------------------------
@@ -54,7 +58,13 @@ int main(void)
     {
         // Update
         //----------------------------------------------------------------------------------
-        // ...
+        if (IsKeyDown(KEY_RIGHT)) dividerValue += 0.01f;
+        else if (IsKeyDown(KEY_LEFT)) dividerValue -= 0.01f;
+        
+        if (dividerValue < 0.0f) dividerValue = 0.0f;
+        else if (dividerValue > 1.0f) dividerValue = 1.0f;
+        
+        SetShaderValue(shader, dividerLoc, &dividerValue, SHADER_UNIFORM_FLOAT);
         //----------------------------------------------------------------------------------
         
         // Draw
@@ -75,6 +85,8 @@ int main(void)
                 DrawTexture(texRed, 0, 0, WHITE);
                 
             EndShaderMode();
+        
+            DrawText("Use KEY_LEFT/KEY_RIGHT to move texture mixing in shader!", 80, GetScreenHeight() - 40, 20, RAYWHITE);
             
         EndDrawing();
         //----------------------------------------------------------------------------------