commit 35237d135807af84bf9b0e5b8d7f8633e58db6f5
author The Android Open Source Project <initial-contribution@android.com> Wed Dec 17 18:08:08 2008 -0800
committer The Android Open Source Project <initial-contribution@android.com> Wed Dec 17 18:08:08 2008 -0800
tree d8bcf3ada2182d248604728285dd80abb466f22a
parent 4f6e8d7a00cbeda1e70cc15be9c4af1018bdad53

Code drop from //branches/cupcake/...@124589

libpixelflinger/codeflinger/blending.cpp

diff --git a/libpixelflinger/codeflinger/blending.cpp b/libpixelflinger/codeflinger/blending.cpp
index 6d3b282..f10217b 100644
--- a/libpixelflinger/codeflinger/blending.cpp
+++ b/libpixelflinger/codeflinger/blending.cpp
@@ -50,6 +50,12 @@
         integer_t factor(scratches.obtain(), 16, CORRUPTIBLE);
         CONTEXT_LOAD(factor.reg, generated_vars.f);
 
+        // clamp fog factor (TODO: see if there is a way to guarantee
+        // we won't overflow, when setting the iterators)
+        BIC(AL, 0, factor.reg, factor.reg, reg_imm(factor.reg, ASR, 31));
+        CMP(AL, factor.reg, imm( 0x10000 ));
+        MOV(HS, 0, factor.reg, imm( 0x10000 ));
+
         build_blendFOneMinusF(temp, factor, fragment, fogColor);
     }
 }