1 files changed, 91 insertions, 0 deletions
diff --git a/tests/RenderScriptTests/ImageProcessing_jb/src/com/android/rs/image/grain.fs b/tests/RenderScriptTests/ImageProcessing_jb/src/com/android/rs/image/grain.fs
new file mode 100644
index 0000000..2e62cd7
--- /dev/null
+++ b/tests/RenderScriptTests/ImageProcessing_jb/src/com/android/rs/image/grain.fs
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+#include "ip.rsh"
+
+uchar __attribute__((kernel)) genRand() {
+    return (uchar)rsRand(0xff);
+}
+
+/*
+ * Convolution matrix of distance 2 with fixed point of 'kShiftBits' bits
+ * shifted. Thus the sum of this matrix should be 'kShiftValue'. Entries of
+ * small values are not calculated to gain efficiency.
+ * The order ot pixels represented in this matrix is:
+ *  1  2  3
+ *  4  0  5
+ *  6  7  8
+ *  and the matrix should be: {230, 56, 114, 56, 114, 114, 56, 114, 56}.
+ *  However, since most of the valus are identical, we only use the first three
+ *  entries and the entries corresponding to the pixels is:
+ *  1  2  1
+ *  2  0  2
+ *  1  2  1
+ */
+
+int32_t gWMask;
+int32_t gHMask;
+
+rs_allocation gBlendSource;
+uchar __attribute__((kernel)) blend9(uint32_t x, uint32_t y) {
+    uint32_t x1 = (x-1) & gWMask;
+    uint32_t x2 = (x+1) & gWMask;
+    uint32_t y1 = (y-1) & gHMask;
+    uint32_t y2 = (y+1) & gHMask;
+
+    uint p00 = 56 *  rsGetElementAt_uchar(gBlendSource, x1, y1);
+    uint p01 = 114 * rsGetElementAt_uchar(gBlendSource, x, y1);
+    uint p02 = 56 *  rsGetElementAt_uchar(gBlendSource, x2, y1);
+    uint p10 = 114 * rsGetElementAt_uchar(gBlendSource, x1, y);
+    uint p11 = 230 * rsGetElementAt_uchar(gBlendSource, x, y);
+    uint p12 = 114 * rsGetElementAt_uchar(gBlendSource, x2, y);
+    uint p20 = 56 *  rsGetElementAt_uchar(gBlendSource, x1, y2);
+    uint p21 = 114 * rsGetElementAt_uchar(gBlendSource, x, y2);
+    uint p22 = 56 *  rsGetElementAt_uchar(gBlendSource, x2, y2);
+
+    p00 += p01;
+    p02 += p10;
+    p11 += p12;
+    p20 += p21;
+
+    p22 += p00;
+    p02 += p11;
+
+    p20 += p22;
+    p20 += p02;
+
+    p20 = min(p20 >> 10, (uint)255);
+    return (uchar)p20;
+}
+
+float gNoiseStrength;
+
+rs_allocation gNoise;
+uchar4 __attribute__((kernel)) root(uchar4 in, uint32_t x, uint32_t y) {
+    float4 ip = convert_float4(in);
+    float pnoise = (float) rsGetElementAt_uchar(gNoise, x & gWMask, y & gHMask);
+
+    float energy_level = ip.r + ip.g + ip.b;
+    float energy_mask = (28.f - sqrt(energy_level)) * 0.03571f;
+    pnoise = (pnoise - 128.f) * energy_mask;
+
+    ip += pnoise * gNoiseStrength;
+    ip = clamp(ip, 0.f, 255.f);
+
+    uchar4 p = convert_uchar4(ip);
+    p.a = 0xff;
+    return p;
+}