commit 9c0b188e4231bcb967234f3646c178d22d8a9f50
author Romain Guy <romainguy@google.com> Fri Jul 13 12:13:07 2012 -0700
committer Romain Guy <romainguy@google.com> Fri Jul 13 12:13:07 2012 -0700
tree 97da5988fb8cbcdda4242e2a900d7cd8d4a2abe0
parent f877308f77f7c6f3edd91618a092207dd3be9077

Text shadow alpha handling incorrect

External bug: http://code.google.com/p/android/issues/detail?id=34879

This CL also fixes a bug where a View's alpha would be applied twice.

Change-Id: I13a1546228f44d4c169259414b6fa103a6e4a0fa

libs/hwui/OpenGLRenderer.cpp

diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index a755320..933d012 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -1148,7 +1148,6 @@
 
 void OpenGLRenderer::setupDrawColor(int color, int alpha) {
     mColorA = alpha / 255.0f;
-    mColorA *= mSnapshot->alpha;
     // Second divide of a by 255 is an optimization, allowing us to simply multiply
     // the rgb values by a instead of also dividing by 255
     const float a = mColorA / 255.0f;
@@ -1180,15 +1179,6 @@
     mSetShaderColor = mDescription.setColor(r, g, b, a);
 }
 
-void OpenGLRenderer::setupDrawAlpha8Color(float r, float g, float b, float a) {
-    mColorA = a;
-    mColorR = r;
-    mColorG = g;
-    mColorB = b;
-    mColorSet = true;
-    mSetShaderColor = mDescription.setAlpha8Color(r, g, b, a);
-}
-
 void OpenGLRenderer::setupDrawShader() {
     if (mShader) {
         mShader->describe(mDescription, mCaches.extensions);
@@ -1770,7 +1760,7 @@
     setupDraw();
     setupDrawNoTexture();
     setupDrawAALine();
-    setupDrawColor(color);
+    setupDrawColor(color, ((color >> 24) & 0xFF) * mSnapshot->alpha);
     setupDrawColorFilter();
     setupDrawShader();
     setupDrawBlending(true, mode);
@@ -2266,7 +2256,7 @@
 status_t OpenGLRenderer::drawPosText(const char* text, int bytesCount, int count,
         const float* positions, SkPaint* paint) {
     if (text == NULL || count == 0 || mSnapshot->isIgnored() ||
-            (paint->getAlpha() == 0 && paint->getXfermode() == NULL)) {
+            (paint->getAlpha() * mSnapshot->alpha == 0 && paint->getXfermode() == NULL)) {
         return DrawGlInfo::kStatusDone;
     }
 
@@ -2339,7 +2329,7 @@
 status_t OpenGLRenderer::drawText(const char* text, int bytesCount, int count,
         float x, float y, SkPaint* paint, float length) {
     if (text == NULL || count == 0 || mSnapshot->isIgnored() ||
-            (paint->getAlpha() == 0 && paint->getXfermode() == NULL)) {
+            (paint->getAlpha() * mSnapshot->alpha == 0 && paint->getXfermode() == NULL)) {
         return DrawGlInfo::kStatusDone;
     }
 
@@ -2392,7 +2382,7 @@
         const float sx = oldX - shadow->left + mShadowDx;
         const float sy = oldY - shadow->top + mShadowDy;
 
-        const int shadowAlpha = ((mShadowColor >> 24) & 0xFF);
+        const int shadowAlpha = ((mShadowColor >> 24) & 0xFF) * mSnapshot->alpha;
         int shadowColor = mShadowColor;
         if (mShader) {
             shadowColor = 0xffffffff;
@@ -2791,7 +2781,7 @@
 
     setupDraw();
     setupDrawNoTexture();
-    setupDrawColor(color);
+    setupDrawColor(color, ((color >> 24) & 0xFF) * mSnapshot->alpha);
     setupDrawShader();
     setupDrawColorFilter();
     setupDrawBlending(mode);