commit f9954c7eabfcbcae113a1efb8d3c525a725273b1
author Mathias Agopian <mathias@google.com> Wed Dec 15 16:59:55 2010 -0800
committer Mathias Agopian <mathias@google.com> Wed Dec 15 16:59:55 2010 -0800
tree 37a87450316ce02674e4d0e040540d20f39b0f12
parent b094b0c4a4309f48d9da7253de78ebda20a8a81c

fix [3127755] Launcher is missing anti-aliasing

Enable limited forms of mipmaping when possible.

Change-Id: I39ad90becaa4048844fdbbbcb187333e7d59fc6a

libs/rs/rsContext.cpp

diff --git a/libs/rs/rsContext.cpp b/libs/rs/rsContext.cpp
index 92c6619..90a2c79 100644
--- a/libs/rs/rsContext.cpp
+++ b/libs/rs/rsContext.cpp
@@ -572,6 +572,7 @@
             glGetIntegerv(GL_MAX_FRAGMENT_UNIFORM_VECTORS, &mGL.mMaxFragmentUniformVectors);
 
             mGL.OES_texture_npot = NULL != strstr((const char *)mGL.mExtensions, "GL_OES_texture_npot");
+            mGL.GL_IMG_texture_npot = NULL != strstr((const char *)mGL.mExtensions, "GL_IMG_texture_npot");
         }
 
     }

libs/rs/rsContext.h

diff --git a/libs/rs/rsContext.h b/libs/rs/rsContext.h
index 709730ef..e24fd09 100644
--- a/libs/rs/rsContext.h
+++ b/libs/rs/rsContext.h
@@ -166,6 +166,7 @@
     mutable const ObjectBase * mObjHead;
 
     bool ext_OES_texture_npot() const {return mGL.OES_texture_npot;}
+    bool ext_GL_IMG_texture_npot() const {return mGL.GL_IMG_texture_npot;}
 
 protected:
     Device *mDev;
@@ -202,6 +203,7 @@
         int32_t mMaxVertexTextureUnits;
 
         bool OES_texture_npot;
+        bool GL_IMG_texture_npot;
     } mGL;
 
     uint32_t mWidth;

libs/rs/rsSampler.cpp

diff --git a/libs/rs/rsSampler.cpp b/libs/rs/rsSampler.cpp
index 71f508f..5693c8a 100644
--- a/libs/rs/rsSampler.cpp
+++ b/libs/rs/rsSampler.cpp
@@ -70,7 +70,11 @@
     }
 
     if ((mMinFilter == RS_SAMPLER_LINEAR_MIP_LINEAR) && forceNonMip) {
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        if (rsc->ext_GL_IMG_texture_npot()) {
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
+        } else {
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        }
     } else {
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, trans[mMinFilter]);
     }