diff options
| author | Chris Craik <ccraik@google.com> | 2014-08-11 16:00:44 -0700 |
|---|---|---|
| committer | Chris Craik <ccraik@google.com> | 2014-08-12 12:44:59 -0700 |
| commit | bf75945e7a1ae7c1000682716643c942c1e19ba6 (patch) | |
| tree | 5be8c8acfb85bb0a6077691e2c0255232cace2ae /libs/hwui/ProgramCache.cpp | |
| parent | c28aceb11e736382bc7ee749483ea5f23299ad78 (diff) | |
Rework shadow interpolation
bug:16852257
Use pow(alpha, 1.5) to avoid harsh edges on shadow alpha ramps.
Also adjusts shadow constants to compensate.
Change-Id: I5869956d7d292db2a8e496bc320084b6d64c3fb7
Diffstat (limited to 'libs/hwui/ProgramCache.cpp')
| -rw-r--r-- | libs/hwui/ProgramCache.cpp | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/libs/hwui/ProgramCache.cpp b/libs/hwui/ProgramCache.cpp index 3ef2a716905d..2dd89b857107 100644 --- a/libs/hwui/ProgramCache.cpp +++ b/libs/hwui/ProgramCache.cpp @@ -121,8 +121,12 @@ const char* gVS_Main_OutBitmapTexCoords = const char* gVS_Main_Position = " vec4 transformedPosition = projection * transform * position;\n" " gl_Position = transformedPosition;\n"; + +const char* gVS_Main_ShadowAAVertexShape = + " alpha = pow(vtxAlpha, 0.667);\n"; const char* gVS_Main_AAVertexShape = " alpha = vtxAlpha;\n"; + const char* gVS_Main_HasRoundRectClip = " roundRectPos = (roundRectInvTransform * transformedPosition).xy;\n"; const char* gVS_Footer = @@ -237,6 +241,8 @@ const char* gFS_Main_ModulateColor = " fragColor *= color.a;\n"; const char* gFS_Main_AccountForAAVertexShape = " fragColor *= alpha;\n"; +const char* gFS_Main_AccountForShadowAAVertexShape = + " fragColor *= pow(alpha, 1.5);\n"; const char* gFS_Main_FetchTexture[2] = { // Don't modulate @@ -515,7 +521,11 @@ String8 ProgramCache::generateVertexShader(const ProgramDescription& description shader.append(gVS_Main_OutTexCoords); } if (description.isAA) { - shader.append(gVS_Main_AAVertexShape); + if (description.isShadowAA) { + shader.append(gVS_Main_ShadowAAVertexShape); + } else { + shader.append(gVS_Main_AAVertexShape); + } } if (description.hasColors) { shader.append(gVS_Main_OutColors); @@ -750,7 +760,11 @@ String8 ProgramCache::generateFragmentShader(const ProgramDescription& descripti shader.append(gFS_Main_ApplyColorOp[description.colorOp]); if (description.isAA) { - shader.append(gFS_Main_AccountForAAVertexShape); + if (description.isShadowAA) { + shader.append(gFS_Main_AccountForShadowAAVertexShape); + } else { + shader.append(gFS_Main_AccountForAAVertexShape); + } } // Output the fragment |