X-Git-Url: http://review.tizen.org/git/?p=platform%2Fcore%2Fuifw%2Fdali-toolkit.git;a=blobdiff_plain;f=dali-toolkit%2Finternal%2Fgraphics%2Fshaders%2Fimage-visual-shader.frag;h=3694280107145e052daf48d4d658915f86861221;hp=0bba311d8012508804f457bc1a441a74a4e03310;hb=aeddb4e028e43d5c25729f1b0e947c1138a8779d;hpb=646440beeb663fc5efcccadeba73dd46016ed1b3

diff --git a/dali-toolkit/internal/graphics/shaders/image-visual-shader.frag b/dali-toolkit/internal/graphics/shaders/image-visual-shader.frag
index 0bba311..3694280 100644
--- a/dali-toolkit/internal/graphics/shaders/image-visual-shader.frag
+++ b/dali-toolkit/internal/graphics/shaders/image-visual-shader.frag
@@ -1,30 +1,23 @@
-#ifndef IS_REQUIRED_ROUNDED_CORNER
-#define IS_REQUIRED_ROUNDED_CORNER 0
-#endif
-#ifndef IS_REQUIRED_BORDERLINE
-#define IS_REQUIRED_BORDERLINE 0
-#endif
-#ifndef ATLAS_DEFAULT_WARP
-#define ATLAS_DEFAULT_WARP 0
-#endif
-#ifndef ATLAS_CUSTOM_WARP
-#define ATLAS_CUSTOM_WARP 0
-#endif
-
 INPUT mediump vec2 vTexCoord;
-#if IS_REQUIRED_ROUNDED_CORNER || IS_REQUIRED_BORDERLINE
+#if defined(IS_REQUIRED_ROUNDED_CORNER) || defined(IS_REQUIRED_BORDERLINE)
 INPUT mediump vec2 vPosition;
 INPUT mediump vec2 vRectSize;
 INPUT mediump vec2 vOptRectSize;
-#if IS_REQUIRED_ROUNDED_CORNER
+#ifdef IS_REQUIRED_ROUNDED_CORNER
 INPUT mediump vec4 vCornerRadius;
 #endif
 #endif
 
 uniform sampler2D sTexture;
-#if ATLAS_DEFAULT_WARP
+
+#ifdef IS_REQUIRED_ALPHA_MASKING
+uniform sampler2D sMaskTexture;
+INPUT mediump vec2 vMaskTexCoord;
+#endif
+
+#ifdef ATLAS_DEFAULT_WARP
 uniform mediump vec4 uAtlasRect;
-#elif ATLAS_CUSTOM_WARP
+#elif defined(ATLAS_CUSTOM_WARP)
 // WrapMode -- 0: CLAMP; 1: REPEAT; 2: REFLECT;
 uniform lowp vec2 wrapMode;
 #endif
@@ -32,13 +25,14 @@ uniform lowp vec2 wrapMode;
 uniform lowp vec4 uColor;
 uniform lowp vec3 mixColor;
 uniform lowp float preMultipliedAlpha;
-#if IS_REQUIRED_BORDERLINE
+#ifdef IS_REQUIRED_BORDERLINE
 uniform mediump float borderlineWidth;
 uniform mediump float borderlineOffset;
 uniform lowp vec4 borderlineColor;
+uniform lowp vec4 uActorColor;
 #endif
 
-#if ATLAS_CUSTOM_WARP
+#ifdef ATLAS_CUSTOM_WARP
 mediump float wrapCoordinate( mediump vec2 range, mediump float coordinate, lowp float wrap )
 {
   mediump float coord;
@@ -50,7 +44,7 @@ mediump float wrapCoordinate( mediump vec2 range, mediump float coordinate, lowp
 }
 #endif
 
-#if IS_REQUIRED_ROUNDED_CORNER || IS_REQUIRED_BORDERLINE
+#if defined(IS_REQUIRED_ROUNDED_CORNER) || defined(IS_REQUIRED_BORDERLINE)
 // Global values both rounded corner and borderline use
 
 // radius of rounded corner on this quadrant
@@ -74,7 +68,7 @@ mediump float gMinInlinePotential = 0.0;
 
 void calculateCornerRadius()
 {
-#if IS_REQUIRED_ROUNDED_CORNER
+#ifdef IS_REQUIRED_ROUNDED_CORNER
   gRadius =
   mix(
     mix(vCornerRadius.x, vCornerRadius.y, sign(vPosition.x) * 0.5 + 0.5),
@@ -88,7 +82,7 @@ void calculatePosition()
 {
   gFragmentPosition = abs(vPosition) - vRectSize;
   gCenterPosition = -gRadius;
-#if IS_REQUIRED_BORDERLINE
+#ifdef IS_REQUIRED_BORDERLINE
   gCenterPosition += borderlineWidth * (clamp(borderlineOffset, -1.0, 1.0) + 1.0) * 0.5;
 #endif
   gDiff = gFragmentPosition - gCenterPosition;
@@ -106,7 +100,7 @@ void setupMinMaxPotential()
   gMaxOutlinePotential = gRadius + gPotentialRange;
   gMinOutlinePotential = gRadius - gPotentialRange;
 
-#if IS_REQUIRED_BORDERLINE
+#ifdef IS_REQUIRED_BORDERLINE
   gMaxInlinePotential = gMaxOutlinePotential - borderlineWidth;
   gMinInlinePotential = gMinOutlinePotential - borderlineWidth;
 #else
@@ -129,7 +123,7 @@ void PreprocessPotential()
 }
 #endif
 
-#if IS_REQUIRED_BORDERLINE
+#ifdef IS_REQUIRED_BORDERLINE
 lowp vec4 convertBorderlineColor(lowp vec4 textureColor)
 {
   mediump float potential = gPotential;
@@ -142,34 +136,57 @@ lowp vec4 convertBorderlineColor(lowp vec4 textureColor)
   {
     // potential is inside borderline range.
     borderlineOpacity = smoothstep(gMinInlinePotential, gMaxInlinePotential, potential);
+
+    // Muliply borderlineWidth to resolve very thin borderline
+    borderlineOpacity *= min(1.0, borderlineWidth);
   }
 
-  //calculate inside of borderline when outilneColor.a < 1.0
-  if(borderlineColor.a < 1.0)
+  lowp vec3  borderlineColorRGB   = borderlineColor.rgb * uActorColor.rgb;
+  lowp float borderlineColorAlpha = borderlineColor.a * uActorColor.a;
+  borderlineColorRGB *= mix(1.0, borderlineColorAlpha, preMultipliedAlpha);
+
+  // Calculate inside of borderline when alpha is between (0.0  1.0). So we need to apply texture color.
+  // If borderlineOpacity is exactly 0.0, we always use whole texture color. In this case, we don't need to run below code.
+  // But if borderlineOpacity > 0.0 and borderlineColor.a == 0.0, we need to apply tCornerRadius.
+  if(borderlineOpacity > 0.0 && borderlineColor.a * borderlineOpacity < 1.0)
   {
     mediump float tCornerRadius = -gCenterPosition;
     mediump float MaxTexturelinePotential = tCornerRadius + gPotentialRange;
     mediump float MinTexturelinePotential = tCornerRadius - gPotentialRange;
-    lowp vec3 BorderlineColorRGB = borderlineColor.xyz;
-    BorderlineColorRGB *= mix(1.0, borderlineColor.a, preMultipliedAlpha);
     if(potential > MaxTexturelinePotential)
     {
-      // potential is out of texture range. use borderline color instead of texture
-      textureColor = vec4(BorderlineColorRGB, 0.0);
+      // potential is out of texture range.
+      textureColor = vec4(0.0);
     }
-    else if(potential > MinTexturelinePotential)
+    else
     {
-      // potential is in texture range
-      textureColor = mix(textureColor, vec4(BorderlineColorRGB, 0.0), smoothstep(MinTexturelinePotential, MaxTexturelinePotential, potential));
+      // potential is in texture range.
+      lowp float textureAlphaScale = mix(1.0, 0.0, smoothstep(MinTexturelinePotential, MaxTexturelinePotential, potential));
+      textureColor.a *= textureAlphaScale;
+      textureColor.rgb *= mix(textureColor.a, textureAlphaScale, preMultipliedAlpha);
     }
-    borderlineOpacity *= borderlineColor.a;
-    return mix(textureColor, vec4(BorderlineColorRGB, 1.0), borderlineOpacity);
+
+    borderlineColorAlpha *= borderlineOpacity;
+    borderlineColorRGB *= mix(borderlineColorAlpha, borderlineOpacity, preMultipliedAlpha);
+    // We use pre-multiplied color to reduce operations.
+    // In here, textureColor and borderlineColorRGB is pre-multiplied color now.
+
+    // Manual blend operation with premultiplied colors.
+    // Final alpha = borderlineColorAlpha + (1.0 - borderlineColorAlpha) * textureColor.a.
+    // (Final rgb * alpha) =  borderlineColorRGB + (1.0 - borderlineColorAlpha) * textureColor.rgb
+    // If preMultipliedAlpha == 1.0, just return vec4(rgb*alpha, alpha)
+    // Else, return vec4((rgb*alpha) / alpha, alpha)
+
+    lowp float finalAlpha = mix(textureColor.a, 1.0, borderlineColorAlpha);
+    lowp vec3  finalMultipliedRGB = borderlineColorRGB + (1.0 - borderlineColorAlpha) * textureColor.rgb;
+    // TODO : Need to find some way without division
+    return vec4(finalMultipliedRGB * mix(1.0 / finalAlpha, 1.0, preMultipliedAlpha), finalAlpha);
   }
-  return mix(textureColor, borderlineColor, borderlineOpacity);
+  return mix(textureColor, vec4(borderlineColorRGB, borderlineColorAlpha), borderlineOpacity);
 }
 #endif
 
-#if IS_REQUIRED_ROUNDED_CORNER
+#ifdef IS_REQUIRED_ROUNDED_CORNER
 mediump float calculateCornerOpacity()
 {
   mediump float potential = gPotential;
@@ -193,35 +210,46 @@ mediump float calculateCornerOpacity()
 
 void main()
 {
-#if ATLAS_DEFAULT_WARP
+#ifdef ATLAS_DEFAULT_WARP
   mediump vec2 texCoord = clamp( mix( uAtlasRect.xy, uAtlasRect.zw, vTexCoord ), uAtlasRect.xy, uAtlasRect.zw );
-#elif ATLAS_CUSTOM_WARP
+#elif defined(ATLAS_CUSTOM_WARP)
   mediump vec2 texCoord = vec2( wrapCoordinate( uAtlasRect.xz, vTexCoord.x, wrapMode.x ),
                                 wrapCoordinate( uAtlasRect.yw, vTexCoord.y, wrapMode.y ) );
 #else
   mediump vec2 texCoord = vTexCoord;
 #endif
 
-  lowp vec4 textureColor = TEXTURE( sTexture, texCoord ) * vec4( mixColor, 1.0 );
+  lowp vec4 textureColor = TEXTURE( sTexture, texCoord ) * vec4( mixColor, 1.0 ) * uColor;
+
+#ifdef IS_REQUIRED_ALPHA_MASKING
+  mediump float maskAlpha = TEXTURE(sMaskTexture, vMaskTexCoord).a;
+  textureColor.a *= maskAlpha;
+  textureColor.rgb *= mix(1.0, maskAlpha, preMultipliedAlpha);
+#endif
 
-#if IS_REQUIRED_ROUNDED_CORNER || IS_REQUIRED_BORDERLINE
+#if defined(IS_REQUIRED_ROUNDED_CORNER) || defined(IS_REQUIRED_BORDERLINE)
   // skip most potential calculate for performance
   if(abs(vPosition.x) < vOptRectSize.x && abs(vPosition.y) < vOptRectSize.y)
   {
-    OUT_COLOR = textureColor * uColor;
-    return;
+    OUT_COLOR = textureColor;
   }
-  PreprocessPotential();
+  else
+  {
+    PreprocessPotential();
+#endif
+
+#ifdef IS_REQUIRED_BORDERLINE
+    textureColor = convertBorderlineColor(textureColor);
 #endif
+    OUT_COLOR = textureColor;
 
-#if IS_REQUIRED_BORDERLINE
-  textureColor = convertBorderlineColor(textureColor);
+#ifdef IS_REQUIRED_ROUNDED_CORNER
+    mediump float opacity = calculateCornerOpacity();
+    OUT_COLOR.a *= opacity;
+    OUT_COLOR.rgb *= mix(1.0, opacity, preMultipliedAlpha);
 #endif
-  OUT_COLOR = textureColor * uColor;
 
-#if IS_REQUIRED_ROUNDED_CORNER
-  mediump float opacity = calculateCornerOpacity();
-  OUT_COLOR.a *= opacity;
-  OUT_COLOR.rgb *= mix(1.0, opacity, preMultipliedAlpha);
+#if defined(IS_REQUIRED_ROUNDED_CORNER) || defined(IS_REQUIRED_BORDERLINE)
+  }
 #endif
 }