The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /** |
| 2 | ** Copyright 2007, The Android Open Source Project |
| 3 | ** |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 4 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | ** you may not use this file except in compliance with the License. |
| 6 | ** You may obtain a copy of the License at |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 7 | ** |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 8 | ** http://www.apache.org/licenses/LICENSE-2.0 |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 9 | ** |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 10 | ** Unless required by applicable law or agreed to in writing, software |
| 11 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | ** See the License for the specific language governing permissions and |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 14 | ** limitations under the License. |
| 15 | */ |
| 16 | |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 17 | #include "jni.h" |
| 18 | #include "JNIHelp.h" |
| 19 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 20 | #include <math.h> |
| 21 | #include <stdio.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <string.h> |
| 24 | #include <assert.h> |
| 25 | #include <dlfcn.h> |
| 26 | |
| 27 | #include <GLES/gl.h> |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 28 | #include <ETC1/etc1.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 29 | |
| 30 | #include <core/SkBitmap.h> |
| 31 | |
| 32 | #include "android_runtime/AndroidRuntime.h" |
| 33 | |
| 34 | #undef LOG_TAG |
| 35 | #define LOG_TAG "OpenGLUtil" |
| 36 | #include <utils/Log.h> |
| 37 | #include "utils/misc.h" |
| 38 | |
| 39 | #include "poly.h" |
| 40 | |
| 41 | namespace android { |
| 42 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 43 | static inline |
| 44 | void mx4transform(float x, float y, float z, float w, const float* pM, float* pDest) { |
| 45 | pDest[0] = pM[0 + 4 * 0] * x + pM[0 + 4 * 1] * y + pM[0 + 4 * 2] * z + pM[0 + 4 * 3] * w; |
| 46 | pDest[1] = pM[1 + 4 * 0] * x + pM[1 + 4 * 1] * y + pM[1 + 4 * 2] * z + pM[1 + 4 * 3] * w; |
| 47 | pDest[2] = pM[2 + 4 * 0] * x + pM[2 + 4 * 1] * y + pM[2 + 4 * 2] * z + pM[2 + 4 * 3] * w; |
| 48 | pDest[3] = pM[3 + 4 * 0] * x + pM[3 + 4 * 1] * y + pM[3 + 4 * 2] * z + pM[3 + 4 * 3] * w; |
| 49 | } |
| 50 | |
| 51 | class MallocHelper { |
| 52 | public: |
| 53 | MallocHelper() { |
| 54 | mData = 0; |
| 55 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 56 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 57 | ~MallocHelper() { |
| 58 | if (mData != 0) { |
| 59 | free(mData); |
| 60 | } |
| 61 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 62 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 63 | void* alloc(size_t size) { |
| 64 | mData = malloc(size); |
| 65 | return mData; |
| 66 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 67 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 68 | private: |
| 69 | void* mData; |
| 70 | }; |
| 71 | |
| 72 | #if 0 |
| 73 | static |
| 74 | void |
| 75 | print_poly(const char* label, Poly* pPoly) { |
Steve Block | 6215d3f | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 76 | ALOGI("%s: %d verts", label, pPoly->n); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 77 | for(int i = 0; i < pPoly->n; i++) { |
| 78 | Poly_vert* pV = & pPoly->vert[i]; |
Steve Block | 6215d3f | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 79 | ALOGI("[%d] %g, %g, %g %g", i, pV->sx, pV->sy, pV->sz, pV->sw); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 80 | } |
| 81 | } |
| 82 | #endif |
| 83 | |
| 84 | static |
| 85 | int visibilityTest(float* pWS, float* pPositions, int positionsLength, |
| 86 | unsigned short* pIndices, int indexCount) { |
| 87 | MallocHelper mallocHelper; |
| 88 | int result = POLY_CLIP_OUT; |
| 89 | float* pTransformed = 0; |
| 90 | int transformedIndexCount = 0; |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 91 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 92 | if ( indexCount < 3 ) { |
| 93 | return POLY_CLIP_OUT; |
| 94 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 95 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 96 | // Find out how many vertices we need to transform |
| 97 | // We transform every vertex between the min and max indices, inclusive. |
| 98 | // This is OK for the data sets we expect to use with this function, but |
| 99 | // for other loads it might be better to use a more sophisticated vertex |
| 100 | // cache of some sort. |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 101 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 102 | int minIndex = 65536; |
| 103 | int maxIndex = -1; |
| 104 | for(int i = 0; i < indexCount; i++) { |
| 105 | int index = pIndices[i]; |
| 106 | if ( index < minIndex ) { |
| 107 | minIndex = index; |
| 108 | } |
| 109 | if ( index > maxIndex ) { |
| 110 | maxIndex = index; |
| 111 | } |
| 112 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 113 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 114 | if ( maxIndex * 3 > positionsLength) { |
| 115 | return -1; |
| 116 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 117 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 118 | transformedIndexCount = maxIndex - minIndex + 1; |
| 119 | pTransformed = (float*) mallocHelper.alloc(transformedIndexCount * 4 * sizeof(float)); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 120 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 121 | if (pTransformed == 0 ) { |
| 122 | return -2; |
| 123 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 124 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 125 | // Transform the vertices |
| 126 | { |
| 127 | const float* pSrc = pPositions + 3 * minIndex; |
| 128 | float* pDst = pTransformed; |
| 129 | for (int i = 0; i < transformedIndexCount; i++, pSrc += 3, pDst += 4) { |
| 130 | mx4transform(pSrc[0], pSrc[1], pSrc[2], 1.0f, pWS, pDst); |
| 131 | } |
| 132 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 133 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 134 | // Clip the triangles |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 135 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 136 | Poly poly; |
| 137 | float* pDest = & poly.vert[0].sx; |
| 138 | for (int i = 0; i < indexCount; i += 3) { |
| 139 | poly.n = 3; |
| 140 | memcpy(pDest , pTransformed + 4 * (pIndices[i ] - minIndex), 4 * sizeof(float)); |
| 141 | memcpy(pDest + 4, pTransformed + 4 * (pIndices[i + 1] - minIndex), 4 * sizeof(float)); |
| 142 | memcpy(pDest + 8, pTransformed + 4 * (pIndices[i + 2] - minIndex), 4 * sizeof(float)); |
| 143 | result = poly_clip_to_frustum(&poly); |
| 144 | if ( result != POLY_CLIP_OUT) { |
| 145 | return result; |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | return result; |
| 150 | } |
| 151 | |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 152 | static void doThrowIAE(JNIEnv* env, const char* msg) { |
| 153 | jniThrowException(env, "java/lang/IllegalArgumentException", msg); |
| 154 | } |
| 155 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 156 | template<class JArray, class T> |
| 157 | class ArrayHelper { |
| 158 | public: |
| 159 | ArrayHelper(JNIEnv* env, JArray ref, jint offset, jint minSize) { |
| 160 | mEnv = env; |
| 161 | mRef = ref; |
| 162 | mOffset = offset; |
| 163 | mMinSize = minSize; |
| 164 | mBase = 0; |
| 165 | mReleaseParam = JNI_ABORT; |
| 166 | } |
| 167 | |
| 168 | ~ArrayHelper() { |
| 169 | if (mBase) { |
| 170 | mEnv->ReleasePrimitiveArrayCritical(mRef, mBase, mReleaseParam); |
| 171 | } |
| 172 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 173 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 174 | // We seperate the bounds check from the initialization because we want to |
| 175 | // be able to bounds-check multiple arrays, and we can't throw an exception |
| 176 | // after we've called GetPrimitiveArrayCritical. |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 177 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 178 | // Return true if the bounds check succeeded |
| 179 | // Else instruct the runtime to throw an exception |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 180 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 181 | bool check() { |
| 182 | if ( ! mRef) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 183 | doThrowIAE(mEnv, "array == null"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 184 | return false; |
| 185 | } |
| 186 | if ( mOffset < 0) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 187 | doThrowIAE(mEnv, "offset < 0"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 188 | return false; |
| 189 | } |
| 190 | mLength = mEnv->GetArrayLength(mRef) - mOffset; |
| 191 | if (mLength < mMinSize ) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 192 | doThrowIAE(mEnv, "length - offset < n"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 193 | return false; |
| 194 | } |
| 195 | return true; |
| 196 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 197 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 198 | // Bind the array. |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 199 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 200 | void bind() { |
| 201 | mBase = (T*) mEnv->GetPrimitiveArrayCritical(mRef, (jboolean *) 0); |
| 202 | mData = mBase + mOffset; |
| 203 | } |
| 204 | |
| 205 | void commitChanges() { |
| 206 | mReleaseParam = 0; |
| 207 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 208 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 209 | T* mData; |
| 210 | int mLength; |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 211 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 212 | private: |
| 213 | T* mBase; |
| 214 | JNIEnv* mEnv; |
| 215 | JArray mRef; |
| 216 | jint mOffset; |
| 217 | jint mMinSize; |
| 218 | int mReleaseParam; |
| 219 | }; |
| 220 | |
| 221 | typedef ArrayHelper<jfloatArray, float> FloatArrayHelper; |
| 222 | typedef ArrayHelper<jcharArray, unsigned short> UnsignedShortArrayHelper; |
| 223 | typedef ArrayHelper<jintArray, int> IntArrayHelper; |
| 224 | typedef ArrayHelper<jbyteArray, unsigned char> ByteArrayHelper; |
| 225 | |
| 226 | inline float distance2(float x, float y, float z) { |
| 227 | return x * x + y * y + z * z; |
| 228 | } |
| 229 | |
| 230 | inline float distance(float x, float y, float z) { |
| 231 | return sqrtf(distance2(x, y, z)); |
| 232 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 233 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 234 | static |
| 235 | void util_computeBoundingSphere(JNIEnv *env, jclass clazz, |
| 236 | jfloatArray positions_ref, jint positionsOffset, jint positionsCount, |
| 237 | jfloatArray sphere_ref, jint sphereOffset) { |
| 238 | FloatArrayHelper positions(env, positions_ref, positionsOffset, 0); |
| 239 | FloatArrayHelper sphere(env, sphere_ref, sphereOffset, 4); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 240 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 241 | bool checkOK = positions.check() && sphere.check(); |
| 242 | if (! checkOK) { |
| 243 | return; |
| 244 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 245 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 246 | positions.bind(); |
| 247 | sphere.bind(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 248 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 249 | if ( positionsCount < 1 ) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 250 | doThrowIAE(env, "positionsCount < 1"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 251 | return; |
| 252 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 253 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 254 | const float* pSrc = positions.mData; |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 255 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 256 | // find bounding box |
| 257 | float x0 = *pSrc++; |
| 258 | float x1 = x0; |
| 259 | float y0 = *pSrc++; |
| 260 | float y1 = y0; |
| 261 | float z0 = *pSrc++; |
| 262 | float z1 = z0; |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 263 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 264 | for(int i = 1; i < positionsCount; i++) { |
| 265 | { |
| 266 | float x = *pSrc++; |
| 267 | if (x < x0) { |
| 268 | x0 = x; |
| 269 | } |
| 270 | else if (x > x1) { |
| 271 | x1 = x; |
| 272 | } |
| 273 | } |
| 274 | { |
| 275 | float y = *pSrc++; |
| 276 | if (y < y0) { |
| 277 | y0 = y; |
| 278 | } |
| 279 | else if (y > y1) { |
| 280 | y1 = y; |
| 281 | } |
| 282 | } |
| 283 | { |
| 284 | float z = *pSrc++; |
| 285 | if (z < z0) { |
| 286 | z0 = z; |
| 287 | } |
| 288 | else if (z > z1) { |
| 289 | z1 = z; |
| 290 | } |
| 291 | } |
| 292 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 293 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 294 | // Because we know our input meshes fit pretty well into bounding boxes, |
| 295 | // just take the diagonal of the box as defining our sphere. |
| 296 | float* pSphere = sphere.mData; |
| 297 | float dx = x1 - x0; |
| 298 | float dy = y1 - y0; |
| 299 | float dz = z1 - z0; |
| 300 | *pSphere++ = x0 + dx * 0.5f; |
| 301 | *pSphere++ = y0 + dy * 0.5f; |
| 302 | *pSphere++ = z0 + dz * 0.5f; |
| 303 | *pSphere++ = distance(dx, dy, dz) * 0.5f; |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 304 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 305 | sphere.commitChanges(); |
| 306 | } |
| 307 | |
| 308 | static void normalizePlane(float* p) { |
| 309 | float rdist = 1.0f / distance(p[0], p[1], p[2]); |
| 310 | for(int i = 0; i < 4; i++) { |
| 311 | p[i] *= rdist; |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | static inline float dot3(float x0, float y0, float z0, float x1, float y1, float z1) { |
| 316 | return x0 * x1 + y0 * y1 + z0 * z1; |
| 317 | } |
| 318 | |
| 319 | static inline float signedDistance(const float* pPlane, float x, float y, float z) { |
| 320 | return dot3(pPlane[0], pPlane[1], pPlane[2], x, y, z) + pPlane[3]; |
| 321 | } |
| 322 | |
| 323 | // Return true if the sphere intersects or is inside the frustum |
| 324 | |
| 325 | static bool sphereHitsFrustum(const float* pFrustum, const float* pSphere) { |
| 326 | float x = pSphere[0]; |
| 327 | float y = pSphere[1]; |
| 328 | float z = pSphere[2]; |
| 329 | float negRadius = -pSphere[3]; |
| 330 | for (int i = 0; i < 6; i++, pFrustum += 4) { |
| 331 | if (signedDistance(pFrustum, x, y, z) <= negRadius) { |
| 332 | return false; |
| 333 | } |
| 334 | } |
| 335 | return true; |
| 336 | } |
| 337 | |
| 338 | static void computeFrustum(const float* m, float* f) { |
| 339 | float m3 = m[3]; |
| 340 | float m7 = m[7]; |
| 341 | float m11 = m[11]; |
| 342 | float m15 = m[15]; |
| 343 | // right |
| 344 | f[0] = m3 - m[0]; |
| 345 | f[1] = m7 - m[4]; |
| 346 | f[2] = m11 - m[8]; |
| 347 | f[3] = m15 - m[12]; |
| 348 | normalizePlane(f); |
| 349 | f+= 4; |
| 350 | |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 351 | // left |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 352 | f[0] = m3 + m[0]; |
| 353 | f[1] = m7 + m[4]; |
| 354 | f[2] = m11 + m[8]; |
| 355 | f[3] = m15 + m[12]; |
| 356 | normalizePlane(f); |
| 357 | f+= 4; |
| 358 | |
| 359 | // top |
| 360 | f[0] = m3 - m[1]; |
| 361 | f[1] = m7 - m[5]; |
| 362 | f[2] = m11 - m[9]; |
| 363 | f[3] = m15 - m[13]; |
| 364 | normalizePlane(f); |
| 365 | f+= 4; |
| 366 | |
| 367 | // bottom |
| 368 | f[0] = m3 + m[1]; |
| 369 | f[1] = m7 + m[5]; |
| 370 | f[2] = m11 + m[9]; |
| 371 | f[3] = m15 + m[13]; |
| 372 | normalizePlane(f); |
| 373 | f+= 4; |
| 374 | |
| 375 | // far |
| 376 | f[0] = m3 - m[2]; |
| 377 | f[1] = m7 - m[6]; |
| 378 | f[2] = m11 - m[10]; |
| 379 | f[3] = m15 - m[14]; |
| 380 | normalizePlane(f); |
| 381 | f+= 4; |
| 382 | |
| 383 | // near |
| 384 | f[0] = m3 + m[2]; |
| 385 | f[1] = m7 + m[6]; |
| 386 | f[2] = m11 + m[10]; |
| 387 | f[3] = m15 + m[14]; |
| 388 | normalizePlane(f); |
| 389 | } |
| 390 | |
| 391 | static |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 392 | jint util_frustumCullSpheres(JNIEnv *env, jclass clazz, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 393 | jfloatArray mvp_ref, jint mvpOffset, |
| 394 | jfloatArray spheres_ref, jint spheresOffset, jint spheresCount, |
| 395 | jintArray results_ref, jint resultsOffset, jint resultsCapacity) { |
| 396 | float frustum[6*4]; |
| 397 | int outputCount; |
| 398 | int* pResults; |
| 399 | float* pSphere; |
| 400 | FloatArrayHelper mvp(env, mvp_ref, mvpOffset, 16); |
| 401 | FloatArrayHelper spheres(env, spheres_ref, spheresOffset, spheresCount * 4); |
| 402 | IntArrayHelper results(env, results_ref, resultsOffset, resultsCapacity); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 403 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 404 | bool initializedOK = mvp.check() && spheres.check() && results.check(); |
| 405 | if (! initializedOK) { |
| 406 | return -1; |
| 407 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 408 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 409 | mvp.bind(); |
| 410 | spheres.bind(); |
| 411 | results.bind(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 412 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 413 | computeFrustum(mvp.mData, frustum); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 414 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 415 | // Cull the spheres |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 416 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 417 | pSphere = spheres.mData; |
| 418 | pResults = results.mData; |
| 419 | outputCount = 0; |
| 420 | for(int i = 0; i < spheresCount; i++, pSphere += 4) { |
| 421 | if (sphereHitsFrustum(frustum, pSphere)) { |
| 422 | if (outputCount < resultsCapacity) { |
| 423 | *pResults++ = i; |
| 424 | } |
| 425 | outputCount++; |
| 426 | } |
| 427 | } |
| 428 | results.commitChanges(); |
| 429 | return outputCount; |
| 430 | } |
| 431 | |
| 432 | /* |
| 433 | public native int visibilityTest(float[] ws, int wsOffset, |
| 434 | float[] positions, int positionsOffset, |
| 435 | char[] indices, int indicesOffset, int indexCount); |
| 436 | */ |
| 437 | |
| 438 | static |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 439 | jint util_visibilityTest(JNIEnv *env, jclass clazz, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 440 | jfloatArray ws_ref, jint wsOffset, |
| 441 | jfloatArray positions_ref, jint positionsOffset, |
| 442 | jcharArray indices_ref, jint indicesOffset, jint indexCount) { |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 443 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 444 | FloatArrayHelper ws(env, ws_ref, wsOffset, 16); |
| 445 | FloatArrayHelper positions(env, positions_ref, positionsOffset, 0); |
| 446 | UnsignedShortArrayHelper indices(env, indices_ref, indicesOffset, 0); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 447 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 448 | bool checkOK = ws.check() && positions.check() && indices.check(); |
| 449 | if (! checkOK) { |
| 450 | // Return value will be ignored, because an exception has been thrown. |
| 451 | return -1; |
| 452 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 453 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 454 | if (indices.mLength < indexCount) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 455 | doThrowIAE(env, "length < offset + indexCount"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 456 | return -1; |
| 457 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 458 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 459 | ws.bind(); |
| 460 | positions.bind(); |
| 461 | indices.bind(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 462 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 463 | return visibilityTest(ws.mData, |
| 464 | positions.mData, positions.mLength, |
| 465 | indices.mData, indexCount); |
| 466 | } |
| 467 | |
| 468 | #define I(_i, _j) ((_j)+ 4*(_i)) |
| 469 | |
| 470 | static |
| 471 | void multiplyMM(float* r, const float* lhs, const float* rhs) |
| 472 | { |
| 473 | for (int i=0 ; i<4 ; i++) { |
| 474 | register const float rhs_i0 = rhs[ I(i,0) ]; |
| 475 | register float ri0 = lhs[ I(0,0) ] * rhs_i0; |
| 476 | register float ri1 = lhs[ I(0,1) ] * rhs_i0; |
| 477 | register float ri2 = lhs[ I(0,2) ] * rhs_i0; |
| 478 | register float ri3 = lhs[ I(0,3) ] * rhs_i0; |
| 479 | for (int j=1 ; j<4 ; j++) { |
| 480 | register const float rhs_ij = rhs[ I(i,j) ]; |
| 481 | ri0 += lhs[ I(j,0) ] * rhs_ij; |
| 482 | ri1 += lhs[ I(j,1) ] * rhs_ij; |
| 483 | ri2 += lhs[ I(j,2) ] * rhs_ij; |
| 484 | ri3 += lhs[ I(j,3) ] * rhs_ij; |
| 485 | } |
| 486 | r[ I(i,0) ] = ri0; |
| 487 | r[ I(i,1) ] = ri1; |
| 488 | r[ I(i,2) ] = ri2; |
| 489 | r[ I(i,3) ] = ri3; |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | static |
| 494 | void util_multiplyMM(JNIEnv *env, jclass clazz, |
| 495 | jfloatArray result_ref, jint resultOffset, |
| 496 | jfloatArray lhs_ref, jint lhsOffset, |
| 497 | jfloatArray rhs_ref, jint rhsOffset) { |
| 498 | |
| 499 | FloatArrayHelper resultMat(env, result_ref, resultOffset, 16); |
| 500 | FloatArrayHelper lhs(env, lhs_ref, lhsOffset, 16); |
| 501 | FloatArrayHelper rhs(env, rhs_ref, rhsOffset, 16); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 502 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 503 | bool checkOK = resultMat.check() && lhs.check() && rhs.check(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 504 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 505 | if ( !checkOK ) { |
| 506 | return; |
| 507 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 508 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 509 | resultMat.bind(); |
| 510 | lhs.bind(); |
| 511 | rhs.bind(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 512 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 513 | multiplyMM(resultMat.mData, lhs.mData, rhs.mData); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 514 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 515 | resultMat.commitChanges(); |
| 516 | } |
| 517 | |
| 518 | static |
| 519 | void multiplyMV(float* r, const float* lhs, const float* rhs) |
| 520 | { |
| 521 | mx4transform(rhs[0], rhs[1], rhs[2], rhs[3], lhs, r); |
| 522 | } |
| 523 | |
| 524 | static |
| 525 | void util_multiplyMV(JNIEnv *env, jclass clazz, |
| 526 | jfloatArray result_ref, jint resultOffset, |
| 527 | jfloatArray lhs_ref, jint lhsOffset, |
| 528 | jfloatArray rhs_ref, jint rhsOffset) { |
| 529 | |
| 530 | FloatArrayHelper resultV(env, result_ref, resultOffset, 4); |
| 531 | FloatArrayHelper lhs(env, lhs_ref, lhsOffset, 16); |
| 532 | FloatArrayHelper rhs(env, rhs_ref, rhsOffset, 4); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 533 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 534 | bool checkOK = resultV.check() && lhs.check() && rhs.check(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 535 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 536 | if ( !checkOK ) { |
| 537 | return; |
| 538 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 539 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 540 | resultV.bind(); |
| 541 | lhs.bind(); |
| 542 | rhs.bind(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 543 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 544 | multiplyMV(resultV.mData, lhs.mData, rhs.mData); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 545 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 546 | resultV.commitChanges(); |
| 547 | } |
| 548 | |
| 549 | // --------------------------------------------------------------------------- |
| 550 | |
| 551 | static jfieldID nativeBitmapID = 0; |
| 552 | |
| 553 | void nativeUtilsClassInit(JNIEnv *env, jclass clazz) |
| 554 | { |
| 555 | jclass bitmapClass = env->FindClass("android/graphics/Bitmap"); |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 556 | nativeBitmapID = env->GetFieldID(bitmapClass, "mNativeBitmap", "J"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 557 | } |
| 558 | |
Siva Velusamy | 64d10a1 | 2012-03-09 14:21:28 -0800 | [diff] [blame] | 559 | extern void setGLDebugLevel(int level); |
Siva Velusamy | 0c1761b | 2012-12-14 17:09:06 -0800 | [diff] [blame] | 560 | void setTracingLevel(JNIEnv *env, jclass clazz, jint level) |
Siva Velusamy | 64d10a1 | 2012-03-09 14:21:28 -0800 | [diff] [blame] | 561 | { |
Siva Velusamy | 0c1761b | 2012-12-14 17:09:06 -0800 | [diff] [blame] | 562 | setGLDebugLevel(level); |
Siva Velusamy | 64d10a1 | 2012-03-09 14:21:28 -0800 | [diff] [blame] | 563 | } |
| 564 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 565 | static int checkFormat(SkBitmap::Config config, int format, int type) |
| 566 | { |
| 567 | switch(config) { |
| 568 | case SkBitmap::kIndex8_Config: |
| 569 | if (format == GL_PALETTE8_RGBA8_OES) |
| 570 | return 0; |
| 571 | case SkBitmap::kARGB_8888_Config: |
| 572 | case SkBitmap::kA8_Config: |
| 573 | if (type == GL_UNSIGNED_BYTE) |
| 574 | return 0; |
| 575 | case SkBitmap::kARGB_4444_Config: |
| 576 | case SkBitmap::kRGB_565_Config: |
| 577 | switch (type) { |
| 578 | case GL_UNSIGNED_SHORT_4_4_4_4: |
| 579 | case GL_UNSIGNED_SHORT_5_6_5: |
| 580 | case GL_UNSIGNED_SHORT_5_5_5_1: |
| 581 | return 0; |
| 582 | case GL_UNSIGNED_BYTE: |
| 583 | if (format == GL_LUMINANCE_ALPHA) |
| 584 | return 0; |
| 585 | } |
| 586 | break; |
| 587 | default: |
| 588 | break; |
| 589 | } |
| 590 | return -1; |
| 591 | } |
| 592 | |
| 593 | static int getInternalFormat(SkBitmap::Config config) |
| 594 | { |
| 595 | switch(config) { |
| 596 | case SkBitmap::kA8_Config: |
| 597 | return GL_ALPHA; |
| 598 | case SkBitmap::kARGB_4444_Config: |
| 599 | return GL_RGBA; |
| 600 | case SkBitmap::kARGB_8888_Config: |
| 601 | return GL_RGBA; |
| 602 | case SkBitmap::kIndex8_Config: |
| 603 | return GL_PALETTE8_RGBA8_OES; |
| 604 | case SkBitmap::kRGB_565_Config: |
| 605 | return GL_RGB; |
| 606 | default: |
| 607 | return -1; |
| 608 | } |
| 609 | } |
| 610 | |
Jack Palevich | 708c17b | 2009-03-24 21:05:22 -0700 | [diff] [blame] | 611 | static int getType(SkBitmap::Config config) |
| 612 | { |
| 613 | switch(config) { |
| 614 | case SkBitmap::kA8_Config: |
| 615 | return GL_UNSIGNED_BYTE; |
| 616 | case SkBitmap::kARGB_4444_Config: |
| 617 | return GL_UNSIGNED_SHORT_4_4_4_4; |
| 618 | case SkBitmap::kARGB_8888_Config: |
| 619 | return GL_UNSIGNED_BYTE; |
| 620 | case SkBitmap::kIndex8_Config: |
| 621 | return -1; // No type for compressed data. |
| 622 | case SkBitmap::kRGB_565_Config: |
| 623 | return GL_UNSIGNED_SHORT_5_6_5; |
| 624 | default: |
| 625 | return -1; |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | static jint util_getInternalFormat(JNIEnv *env, jclass clazz, |
| 630 | jobject jbitmap) |
| 631 | { |
| 632 | SkBitmap const * nativeBitmap = |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 633 | (SkBitmap const *)env->GetLongField(jbitmap, nativeBitmapID); |
Jack Palevich | 708c17b | 2009-03-24 21:05:22 -0700 | [diff] [blame] | 634 | const SkBitmap& bitmap(*nativeBitmap); |
| 635 | SkBitmap::Config config = bitmap.getConfig(); |
| 636 | return getInternalFormat(config); |
| 637 | } |
| 638 | |
| 639 | static jint util_getType(JNIEnv *env, jclass clazz, |
| 640 | jobject jbitmap) |
| 641 | { |
| 642 | SkBitmap const * nativeBitmap = |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 643 | (SkBitmap const *)env->GetLongField(jbitmap, nativeBitmapID); |
Jack Palevich | 708c17b | 2009-03-24 21:05:22 -0700 | [diff] [blame] | 644 | const SkBitmap& bitmap(*nativeBitmap); |
| 645 | SkBitmap::Config config = bitmap.getConfig(); |
| 646 | return getType(config); |
| 647 | } |
| 648 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 649 | static jint util_texImage2D(JNIEnv *env, jclass clazz, |
| 650 | jint target, jint level, jint internalformat, |
| 651 | jobject jbitmap, jint type, jint border) |
| 652 | { |
| 653 | SkBitmap const * nativeBitmap = |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 654 | (SkBitmap const *)env->GetLongField(jbitmap, nativeBitmapID); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 655 | const SkBitmap& bitmap(*nativeBitmap); |
| 656 | SkBitmap::Config config = bitmap.getConfig(); |
| 657 | if (internalformat < 0) { |
| 658 | internalformat = getInternalFormat(config); |
| 659 | } |
Jack Palevich | 708c17b | 2009-03-24 21:05:22 -0700 | [diff] [blame] | 660 | if (type < 0) { |
| 661 | type = getType(config); |
| 662 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 663 | int err = checkFormat(config, internalformat, type); |
| 664 | if (err) |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 665 | return err; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 666 | bitmap.lockPixels(); |
| 667 | const int w = bitmap.width(); |
| 668 | const int h = bitmap.height(); |
| 669 | const void* p = bitmap.getPixels(); |
| 670 | if (internalformat == GL_PALETTE8_RGBA8_OES) { |
| 671 | if (sizeof(SkPMColor) != sizeof(uint32_t)) { |
| 672 | err = -1; |
| 673 | goto error; |
| 674 | } |
| 675 | const size_t size = bitmap.getSize(); |
| 676 | const size_t palette_size = 256*sizeof(SkPMColor); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 677 | const size_t imageSize = size + palette_size; |
| 678 | void* const data = malloc(imageSize); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 679 | if (data) { |
| 680 | void* const pixels = (char*)data + palette_size; |
| 681 | SkColorTable* ctable = bitmap.getColorTable(); |
| 682 | memcpy(data, ctable->lockColors(), ctable->count() * sizeof(SkPMColor)); |
| 683 | memcpy(pixels, p, size); |
| 684 | ctable->unlockColors(false); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 685 | glCompressedTexImage2D(target, level, internalformat, w, h, border, imageSize, data); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 686 | free(data); |
| 687 | } else { |
| 688 | err = -1; |
| 689 | } |
| 690 | } else { |
| 691 | glTexImage2D(target, level, internalformat, w, h, border, internalformat, type, p); |
| 692 | } |
| 693 | error: |
| 694 | bitmap.unlockPixels(); |
| 695 | return err; |
| 696 | } |
| 697 | |
| 698 | static jint util_texSubImage2D(JNIEnv *env, jclass clazz, |
| 699 | jint target, jint level, jint xoffset, jint yoffset, |
| 700 | jobject jbitmap, jint format, jint type) |
| 701 | { |
| 702 | SkBitmap const * nativeBitmap = |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 703 | (SkBitmap const *)env->GetLongField(jbitmap, nativeBitmapID); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 704 | const SkBitmap& bitmap(*nativeBitmap); |
| 705 | SkBitmap::Config config = bitmap.getConfig(); |
| 706 | if (format < 0) { |
| 707 | format = getInternalFormat(config); |
| 708 | if (format == GL_PALETTE8_RGBA8_OES) |
| 709 | return -1; // glCompressedTexSubImage2D() not supported |
| 710 | } |
| 711 | int err = checkFormat(config, format, type); |
| 712 | if (err) |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 713 | return err; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 714 | bitmap.lockPixels(); |
| 715 | const int w = bitmap.width(); |
| 716 | const int h = bitmap.height(); |
| 717 | const void* p = bitmap.getPixels(); |
| 718 | glTexSubImage2D(target, level, xoffset, yoffset, w, h, format, type, p); |
| 719 | bitmap.unlockPixels(); |
| 720 | return 0; |
| 721 | } |
| 722 | |
| 723 | /* |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 724 | * ETC1 methods. |
| 725 | */ |
| 726 | |
| 727 | static jclass nioAccessClass; |
| 728 | static jclass bufferClass; |
| 729 | static jmethodID getBasePointerID; |
| 730 | static jmethodID getBaseArrayID; |
| 731 | static jmethodID getBaseArrayOffsetID; |
| 732 | static jfieldID positionID; |
| 733 | static jfieldID limitID; |
| 734 | static jfieldID elementSizeShiftID; |
| 735 | |
| 736 | /* Cache method IDs each time the class is loaded. */ |
| 737 | |
| 738 | static void |
| 739 | nativeClassInitBuffer(JNIEnv *_env) |
| 740 | { |
| 741 | jclass nioAccessClassLocal = _env->FindClass("java/nio/NIOAccess"); |
| 742 | nioAccessClass = (jclass) _env->NewGlobalRef(nioAccessClassLocal); |
| 743 | |
| 744 | jclass bufferClassLocal = _env->FindClass("java/nio/Buffer"); |
| 745 | bufferClass = (jclass) _env->NewGlobalRef(bufferClassLocal); |
| 746 | |
| 747 | getBasePointerID = _env->GetStaticMethodID(nioAccessClass, |
| 748 | "getBasePointer", "(Ljava/nio/Buffer;)J"); |
| 749 | getBaseArrayID = _env->GetStaticMethodID(nioAccessClass, |
| 750 | "getBaseArray", "(Ljava/nio/Buffer;)Ljava/lang/Object;"); |
| 751 | getBaseArrayOffsetID = _env->GetStaticMethodID(nioAccessClass, |
| 752 | "getBaseArrayOffset", "(Ljava/nio/Buffer;)I"); |
| 753 | positionID = _env->GetFieldID(bufferClass, "position", "I"); |
| 754 | limitID = _env->GetFieldID(bufferClass, "limit", "I"); |
| 755 | elementSizeShiftID = |
| 756 | _env->GetFieldID(bufferClass, "_elementSizeShift", "I"); |
| 757 | } |
| 758 | |
| 759 | static void * |
| 760 | getPointer(JNIEnv *_env, jobject buffer, jint *remaining) |
| 761 | { |
| 762 | jint position; |
| 763 | jint limit; |
| 764 | jint elementSizeShift; |
| 765 | jlong pointer; |
| 766 | jint offset; |
| 767 | void *data; |
| 768 | |
| 769 | position = _env->GetIntField(buffer, positionID); |
| 770 | limit = _env->GetIntField(buffer, limitID); |
| 771 | elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID); |
| 772 | *remaining = (limit - position) << elementSizeShift; |
| 773 | pointer = _env->CallStaticLongMethod(nioAccessClass, |
| 774 | getBasePointerID, buffer); |
| 775 | if (pointer != 0L) { |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 776 | return reinterpret_cast<void *>(pointer); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 777 | } |
| 778 | return NULL; |
| 779 | } |
| 780 | |
| 781 | class BufferHelper { |
| 782 | public: |
| 783 | BufferHelper(JNIEnv *env, jobject buffer) { |
| 784 | mEnv = env; |
| 785 | mBuffer = buffer; |
| 786 | mData = NULL; |
| 787 | mRemaining = 0; |
| 788 | } |
| 789 | |
| 790 | bool checkPointer(const char* errorMessage) { |
| 791 | if (mBuffer) { |
| 792 | mData = getPointer(mEnv, mBuffer, &mRemaining); |
| 793 | if (mData == NULL) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 794 | doThrowIAE(mEnv, errorMessage); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 795 | } |
| 796 | return mData != NULL; |
| 797 | } else { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 798 | doThrowIAE(mEnv, errorMessage); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 799 | return false; |
| 800 | } |
| 801 | } |
| 802 | |
| 803 | inline void* getData() { |
| 804 | return mData; |
| 805 | } |
| 806 | |
| 807 | inline jint remaining() { |
| 808 | return mRemaining; |
| 809 | } |
| 810 | |
| 811 | private: |
| 812 | JNIEnv* mEnv; |
| 813 | jobject mBuffer; |
| 814 | void* mData; |
| 815 | jint mRemaining; |
| 816 | }; |
| 817 | |
| 818 | /** |
| 819 | * Encode a block of pixels. |
| 820 | * |
| 821 | * @param in a pointer to a ETC1_DECODED_BLOCK_SIZE array of bytes that represent a |
| 822 | * 4 x 4 square of 3-byte pixels in form R, G, B. Byte (3 * (x + 4 * y) is the R |
| 823 | * value of pixel (x, y). |
| 824 | * |
| 825 | * @param validPixelMask is a 16-bit mask where bit (1 << (x + y * 4)) indicates whether |
| 826 | * the corresponding (x,y) pixel is valid. Invalid pixel color values are ignored when compressing. |
| 827 | * |
| 828 | * @param out an ETC1 compressed version of the data. |
| 829 | * |
| 830 | */ |
| 831 | static void etc1_encodeBlock(JNIEnv *env, jclass clazz, |
| 832 | jobject in, jint validPixelMask, jobject out) { |
| 833 | if (validPixelMask < 0 || validPixelMask > 15) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 834 | doThrowIAE(env, "validPixelMask"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 835 | return; |
| 836 | } |
| 837 | BufferHelper inB(env, in); |
| 838 | BufferHelper outB(env, out); |
| 839 | if (inB.checkPointer("in") && outB.checkPointer("out")) { |
| 840 | if (inB.remaining() < ETC1_DECODED_BLOCK_SIZE) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 841 | doThrowIAE(env, "in's remaining data < DECODED_BLOCK_SIZE"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 842 | } else if (outB.remaining() < ETC1_ENCODED_BLOCK_SIZE) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 843 | doThrowIAE(env, "out's remaining data < ENCODED_BLOCK_SIZE"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 844 | } else { |
| 845 | etc1_encode_block((etc1_byte*) inB.getData(), validPixelMask, |
| 846 | (etc1_byte*) outB.getData()); |
| 847 | } |
| 848 | } |
| 849 | } |
| 850 | |
| 851 | /** |
| 852 | * Decode a block of pixels. |
| 853 | * |
| 854 | * @param in an ETC1 compressed version of the data. |
| 855 | * |
| 856 | * @param out a pointer to a ETC_DECODED_BLOCK_SIZE array of bytes that represent a |
| 857 | * 4 x 4 square of 3-byte pixels in form R, G, B. Byte (3 * (x + 4 * y) is the R |
| 858 | * value of pixel (x, y). |
| 859 | */ |
| 860 | static void etc1_decodeBlock(JNIEnv *env, jclass clazz, |
| 861 | jobject in, jobject out){ |
| 862 | BufferHelper inB(env, in); |
| 863 | BufferHelper outB(env, out); |
| 864 | if (inB.checkPointer("in") && outB.checkPointer("out")) { |
| 865 | if (inB.remaining() < ETC1_ENCODED_BLOCK_SIZE) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 866 | doThrowIAE(env, "in's remaining data < ENCODED_BLOCK_SIZE"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 867 | } else if (outB.remaining() < ETC1_DECODED_BLOCK_SIZE) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 868 | doThrowIAE(env, "out's remaining data < DECODED_BLOCK_SIZE"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 869 | } else { |
| 870 | etc1_decode_block((etc1_byte*) inB.getData(), |
| 871 | (etc1_byte*) outB.getData()); |
| 872 | } |
| 873 | } |
| 874 | } |
| 875 | |
| 876 | /** |
| 877 | * Return the size of the encoded image data (does not include size of PKM header). |
| 878 | */ |
| 879 | static jint etc1_getEncodedDataSize(JNIEnv *env, jclass clazz, |
| 880 | jint width, jint height) { |
| 881 | return etc1_get_encoded_data_size(width, height); |
| 882 | } |
| 883 | |
| 884 | /** |
| 885 | * Encode an entire image. |
| 886 | * @param in pointer to the image data. Formatted such that |
| 887 | * pixel (x,y) is at pIn + pixelSize * x + stride * y + redOffset; |
| 888 | * @param out pointer to encoded data. Must be large enough to store entire encoded image. |
| 889 | */ |
| 890 | static void etc1_encodeImage(JNIEnv *env, jclass clazz, |
| 891 | jobject in, jint width, jint height, |
| 892 | jint pixelSize, jint stride, jobject out) { |
| 893 | if (pixelSize < 2 || pixelSize > 3) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 894 | doThrowIAE(env, "pixelSize must be 2 or 3"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 895 | return; |
| 896 | } |
| 897 | BufferHelper inB(env, in); |
| 898 | BufferHelper outB(env, out); |
| 899 | if (inB.checkPointer("in") && outB.checkPointer("out")) { |
| 900 | jint imageSize = stride * height; |
| 901 | jint encodedImageSize = etc1_get_encoded_data_size(width, height); |
| 902 | if (inB.remaining() < imageSize) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 903 | doThrowIAE(env, "in's remaining data < image size"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 904 | } else if (outB.remaining() < encodedImageSize) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 905 | doThrowIAE(env, "out's remaining data < encoded image size"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 906 | } else { |
| 907 | int result = etc1_encode_image((etc1_byte*) inB.getData(), |
| 908 | width, height, pixelSize, |
| 909 | stride, |
| 910 | (etc1_byte*) outB.getData()); |
| 911 | } |
| 912 | } |
| 913 | } |
| 914 | |
| 915 | /** |
| 916 | * Decode an entire image. |
| 917 | * @param in the encoded data. |
| 918 | * @param out pointer to the image data. Will be written such that |
| 919 | * pixel (x,y) is at pIn + pixelSize * x + stride * y. Must be |
| 920 | * large enough to store entire image. |
| 921 | */ |
| 922 | static void etc1_decodeImage(JNIEnv *env, jclass clazz, |
| 923 | jobject in, jobject out, |
| 924 | jint width, jint height, |
| 925 | jint pixelSize, jint stride) { |
| 926 | if (pixelSize < 2 || pixelSize > 3) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 927 | doThrowIAE(env, "pixelSize must be 2 or 3"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 928 | return; |
| 929 | } |
| 930 | BufferHelper inB(env, in); |
| 931 | BufferHelper outB(env, out); |
| 932 | if (inB.checkPointer("in") && outB.checkPointer("out")) { |
| 933 | jint imageSize = stride * height; |
| 934 | jint encodedImageSize = etc1_get_encoded_data_size(width, height); |
| 935 | if (inB.remaining() < encodedImageSize) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 936 | doThrowIAE(env, "in's remaining data < encoded image size"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 937 | } else if (outB.remaining() < imageSize) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 938 | doThrowIAE(env, "out's remaining data < image size"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 939 | } else { |
| 940 | int result = etc1_decode_image((etc1_byte*) inB.getData(), |
| 941 | (etc1_byte*) outB.getData(), |
| 942 | width, height, pixelSize, |
| 943 | stride); |
| 944 | } |
| 945 | } |
| 946 | } |
| 947 | |
| 948 | /** |
| 949 | * Format a PKM header |
| 950 | */ |
| 951 | static void etc1_formatHeader(JNIEnv *env, jclass clazz, |
| 952 | jobject header, jint width, jint height) { |
| 953 | BufferHelper headerB(env, header); |
| 954 | if (headerB.checkPointer("header") ){ |
| 955 | if (headerB.remaining() < ETC_PKM_HEADER_SIZE) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 956 | doThrowIAE(env, "header's remaining data < ETC_PKM_HEADER_SIZE"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 957 | } else { |
| 958 | etc1_pkm_format_header((etc1_byte*) headerB.getData(), width, height); |
| 959 | } |
| 960 | } |
| 961 | } |
| 962 | |
| 963 | /** |
| 964 | * Check if a PKM header is correctly formatted. |
| 965 | */ |
| 966 | static jboolean etc1_isValid(JNIEnv *env, jclass clazz, |
| 967 | jobject header) { |
| 968 | jboolean result = false; |
| 969 | BufferHelper headerB(env, header); |
| 970 | if (headerB.checkPointer("header") ){ |
| 971 | if (headerB.remaining() < ETC_PKM_HEADER_SIZE) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 972 | doThrowIAE(env, "header's remaining data < ETC_PKM_HEADER_SIZE"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 973 | } else { |
| 974 | result = etc1_pkm_is_valid((etc1_byte*) headerB.getData()); |
| 975 | } |
| 976 | } |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 977 | return result ? JNI_TRUE : JNI_FALSE; |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 978 | } |
| 979 | |
| 980 | /** |
| 981 | * Read the image width from a PKM header |
| 982 | */ |
| 983 | static jint etc1_getWidth(JNIEnv *env, jclass clazz, |
| 984 | jobject header) { |
| 985 | jint result = 0; |
| 986 | BufferHelper headerB(env, header); |
| 987 | if (headerB.checkPointer("header") ){ |
| 988 | if (headerB.remaining() < ETC_PKM_HEADER_SIZE) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 989 | doThrowIAE(env, "header's remaining data < ETC_PKM_HEADER_SIZE"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 990 | } else { |
| 991 | result = etc1_pkm_get_width((etc1_byte*) headerB.getData()); |
| 992 | } |
| 993 | } |
| 994 | return result; |
| 995 | } |
| 996 | |
| 997 | /** |
| 998 | * Read the image height from a PKM header |
| 999 | */ |
Ashok Bhat | a039843 | 2014-01-20 20:08:01 +0000 | [diff] [blame] | 1000 | static jint etc1_getHeight(JNIEnv *env, jclass clazz, |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 1001 | jobject header) { |
| 1002 | jint result = 0; |
| 1003 | BufferHelper headerB(env, header); |
| 1004 | if (headerB.checkPointer("header") ){ |
| 1005 | if (headerB.remaining() < ETC_PKM_HEADER_SIZE) { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 1006 | doThrowIAE(env, "header's remaining data < ETC_PKM_HEADER_SIZE"); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 1007 | } else { |
| 1008 | result = etc1_pkm_get_height((etc1_byte*) headerB.getData()); |
| 1009 | } |
| 1010 | } |
| 1011 | return result; |
| 1012 | } |
| 1013 | |
| 1014 | /* |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1015 | * JNI registration |
| 1016 | */ |
| 1017 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1018 | static JNINativeMethod gMatrixMethods[] = { |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 1019 | { "multiplyMM", "([FI[FI[FI)V", (void*)util_multiplyMM }, |
| 1020 | { "multiplyMV", "([FI[FI[FI)V", (void*)util_multiplyMV }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1021 | }; |
| 1022 | |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 1023 | static JNINativeMethod gVisibilityMethods[] = { |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 1024 | { "computeBoundingSphere", "([FII[FI)V", (void*)util_computeBoundingSphere }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1025 | { "frustumCullSpheres", "([FI[FII[III)I", (void*)util_frustumCullSpheres }, |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 1026 | { "visibilityTest", "([FI[FI[CII)I", (void*)util_visibilityTest }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1027 | }; |
| 1028 | |
| 1029 | static JNINativeMethod gUtilsMethods[] = { |
| 1030 | {"nativeClassInit", "()V", (void*)nativeUtilsClassInit }, |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 1031 | { "native_getInternalFormat", "(Landroid/graphics/Bitmap;)I", (void*) util_getInternalFormat }, |
| 1032 | { "native_getType", "(Landroid/graphics/Bitmap;)I", (void*) util_getType }, |
| 1033 | { "native_texImage2D", "(IIILandroid/graphics/Bitmap;II)I", (void*)util_texImage2D }, |
| 1034 | { "native_texSubImage2D", "(IIIILandroid/graphics/Bitmap;II)I", (void*)util_texSubImage2D }, |
Siva Velusamy | 0c1761b | 2012-12-14 17:09:06 -0800 | [diff] [blame] | 1035 | { "setTracingLevel", "(I)V", (void*)setTracingLevel }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1036 | }; |
| 1037 | |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 1038 | static JNINativeMethod gEtc1Methods[] = { |
| 1039 | { "encodeBlock", "(Ljava/nio/Buffer;ILjava/nio/Buffer;)V", (void*) etc1_encodeBlock }, |
| 1040 | { "decodeBlock", "(Ljava/nio/Buffer;Ljava/nio/Buffer;)V", (void*) etc1_decodeBlock }, |
| 1041 | { "getEncodedDataSize", "(II)I", (void*) etc1_getEncodedDataSize }, |
| 1042 | { "encodeImage", "(Ljava/nio/Buffer;IIIILjava/nio/Buffer;)V", (void*) etc1_encodeImage }, |
| 1043 | { "decodeImage", "(Ljava/nio/Buffer;Ljava/nio/Buffer;IIII)V", (void*) etc1_decodeImage }, |
| 1044 | { "formatHeader", "(Ljava/nio/Buffer;II)V", (void*) etc1_formatHeader }, |
| 1045 | { "isValid", "(Ljava/nio/Buffer;)Z", (void*) etc1_isValid }, |
| 1046 | { "getWidth", "(Ljava/nio/Buffer;)I", (void*) etc1_getWidth }, |
| 1047 | { "getHeight", "(Ljava/nio/Buffer;)I", (void*) etc1_getHeight }, |
| 1048 | }; |
| 1049 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1050 | typedef struct _ClassRegistrationInfo { |
| 1051 | const char* classPath; |
| 1052 | JNINativeMethod* methods; |
| 1053 | size_t methodCount; |
| 1054 | } ClassRegistrationInfo; |
| 1055 | |
| 1056 | static ClassRegistrationInfo gClasses[] = { |
Elliott Hughes | 8451b25 | 2011-04-07 19:17:57 -0700 | [diff] [blame] | 1057 | {"android/opengl/Matrix", gMatrixMethods, NELEM(gMatrixMethods)}, |
| 1058 | {"android/opengl/Visibility", gVisibilityMethods, NELEM(gVisibilityMethods)}, |
| 1059 | {"android/opengl/GLUtils", gUtilsMethods, NELEM(gUtilsMethods)}, |
| 1060 | {"android/opengl/ETC1", gEtc1Methods, NELEM(gEtc1Methods)}, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1061 | }; |
| 1062 | |
| 1063 | int register_android_opengl_classes(JNIEnv* env) |
| 1064 | { |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 1065 | nativeClassInitBuffer(env); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1066 | int result = 0; |
| 1067 | for (int i = 0; i < NELEM(gClasses); i++) { |
| 1068 | ClassRegistrationInfo* cri = &gClasses[i]; |
| 1069 | result = AndroidRuntime::registerNativeMethods(env, |
| 1070 | cri->classPath, cri->methods, cri->methodCount); |
| 1071 | if (result < 0) { |
Steve Block | 3762c31 | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 1072 | ALOGE("Failed to register %s: %d", cri->classPath, result); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1073 | break; |
| 1074 | } |
| 1075 | } |
| 1076 | return result; |
| 1077 | } |
| 1078 | |
| 1079 | } // namespace android |