HWUI: set correct sampler for external texture in shaders

Test: hwuimacro hwbitmapcompositeshader
bug:30999911
Change-Id: Ic63f7109a4a7069b62c0b21efae2d4ba7e6d64be

1 files changed, 6 insertions, 0 deletions

diff --git a/libs/hwui/Program.h b/libs/hwui/Program.h
index 9c4cb098b4c3..e70982f5444a 100644
--- a/libs/hwui/Program.h
+++ b/libs/hwui/Program.h
@@ -54,6 +54,7 @@ namespace uirenderer {
 #define PROGRAM_KEY_COLOR_MATRIX        0x20
 #define PROGRAM_KEY_COLOR_BLEND         0x40
 #define PROGRAM_KEY_BITMAP_NPOT         0x80
+#define PROGRAM_KEY_BITMAP_EXTERNAL    0x100
 
 #define PROGRAM_KEY_SWAP_SRC_DST      0x2000
 
@@ -133,6 +134,7 @@ struct ProgramDescription {
 
     // Shaders
     bool hasBitmap;
+    bool isShaderBitmapExternal;
     bool useShaderBasedWrap;
 
     bool hasVertexAlpha;
@@ -180,6 +182,7 @@ struct ProgramDescription {
         modulate = false;
 
         hasBitmap = false;
+        isShaderBitmapExternal = false;
         useShaderBasedWrap = false;
 
         hasGradient = false;
@@ -239,6 +242,9 @@ struct ProgramDescription {
                 key |= getEnumForWrap(bitmapWrapS) << PROGRAM_BITMAP_WRAPS_SHIFT;
                 key |= getEnumForWrap(bitmapWrapT) << PROGRAM_BITMAP_WRAPT_SHIFT;
             }
+            if (isShaderBitmapExternal) {
+                key |= PROGRAM_KEY_BITMAP_EXTERNAL;
+            }
         }
         if (hasGradient) key |= PROGRAM_KEY_GRADIENT;
         key |= programid(gradientType) << PROGRAM_GRADIENT_TYPE_SHIFT;