Merge "Add RenderScript fragment shader test"

#

# Copyright (C) 2011 The Android Open Source Project

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#      http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

#

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional

LOCAL_SRC_FILES := $(call all-java-files-under, src) $(call all-renderscript-files-under, src)

LOCAL_PACKAGE_NAME := ShadersTest

include $(BUILD_PACKAGE)

<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (C) 2011 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");

     you may not use this file except in compliance with the License.

     You may obtain a copy of the License at

          http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software

     distributed under the License is distributed on an "AS IS" BASIS,

     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

     See the License for the specific language governing permissions and

     limitations under the License.

-->

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.android.shaderstest">

    <uses-permission android:name="android.permission.INTERNET" />

    <application android:label="_ShadersTest">

        <activity android:name="ShadersTest"

                  android:label="_ShadersTest"

                  android:theme="@android:style/Theme.Black.NoTitleBar">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

void main() {

    // Non-linear depth value

    float z = gl_FragCoord.z;

    // Near and far planes from the projection

    // In practice, these values can be used to tweak

    // the focus range

    float n = UNI_near;

    float f = UNI_far;

    // Linear depth value

    z = (2.0 * n) / (f + n - z * (f - n));

    gl_FragColor = vec4(z, z, z, 1.0);

}