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 | |
| 17 | #include <nativehelper/jni.h> |
| 18 | #include <math.h> |
| 19 | #include <stdio.h> |
| 20 | #include <stdlib.h> |
| 21 | #include <string.h> |
| 22 | #include <assert.h> |
| 23 | #include <dlfcn.h> |
| 24 | |
| 25 | #include <GLES/gl.h> |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 26 | #include <ETC1/etc1.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 27 | |
| 28 | #include <core/SkBitmap.h> |
| 29 | |
| 30 | #include "android_runtime/AndroidRuntime.h" |
| 31 | |
| 32 | #undef LOG_TAG |
| 33 | #define LOG_TAG "OpenGLUtil" |
| 34 | #include <utils/Log.h> |
| 35 | #include "utils/misc.h" |
| 36 | |
| 37 | #include "poly.h" |
| 38 | |
| 39 | namespace android { |
| 40 | |
| 41 | static jclass gIAEClass; |
| 42 | static jclass gUOEClass; |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 43 | static jclass gAIOOBEClass; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 44 | |
| 45 | static inline |
| 46 | void mx4transform(float x, float y, float z, float w, const float* pM, float* pDest) { |
| 47 | pDest[0] = pM[0 + 4 * 0] * x + pM[0 + 4 * 1] * y + pM[0 + 4 * 2] * z + pM[0 + 4 * 3] * w; |
| 48 | pDest[1] = pM[1 + 4 * 0] * x + pM[1 + 4 * 1] * y + pM[1 + 4 * 2] * z + pM[1 + 4 * 3] * w; |
| 49 | pDest[2] = pM[2 + 4 * 0] * x + pM[2 + 4 * 1] * y + pM[2 + 4 * 2] * z + pM[2 + 4 * 3] * w; |
| 50 | pDest[3] = pM[3 + 4 * 0] * x + pM[3 + 4 * 1] * y + pM[3 + 4 * 2] * z + pM[3 + 4 * 3] * w; |
| 51 | } |
| 52 | |
| 53 | class MallocHelper { |
| 54 | public: |
| 55 | MallocHelper() { |
| 56 | mData = 0; |
| 57 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 58 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 59 | ~MallocHelper() { |
| 60 | if (mData != 0) { |
| 61 | free(mData); |
| 62 | } |
| 63 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 64 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 65 | void* alloc(size_t size) { |
| 66 | mData = malloc(size); |
| 67 | return mData; |
| 68 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 69 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 70 | private: |
| 71 | void* mData; |
| 72 | }; |
| 73 | |
| 74 | #if 0 |
| 75 | static |
| 76 | void |
| 77 | print_poly(const char* label, Poly* pPoly) { |
| 78 | LOGI("%s: %d verts", label, pPoly->n); |
| 79 | for(int i = 0; i < pPoly->n; i++) { |
| 80 | Poly_vert* pV = & pPoly->vert[i]; |
| 81 | LOGI("[%d] %g, %g, %g %g", i, pV->sx, pV->sy, pV->sz, pV->sw); |
| 82 | } |
| 83 | } |
| 84 | #endif |
| 85 | |
| 86 | static |
| 87 | int visibilityTest(float* pWS, float* pPositions, int positionsLength, |
| 88 | unsigned short* pIndices, int indexCount) { |
| 89 | MallocHelper mallocHelper; |
| 90 | int result = POLY_CLIP_OUT; |
| 91 | float* pTransformed = 0; |
| 92 | int transformedIndexCount = 0; |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 93 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 94 | if ( indexCount < 3 ) { |
| 95 | return POLY_CLIP_OUT; |
| 96 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 97 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 98 | // Find out how many vertices we need to transform |
| 99 | // We transform every vertex between the min and max indices, inclusive. |
| 100 | // This is OK for the data sets we expect to use with this function, but |
| 101 | // for other loads it might be better to use a more sophisticated vertex |
| 102 | // cache of some sort. |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 103 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 104 | int minIndex = 65536; |
| 105 | int maxIndex = -1; |
| 106 | for(int i = 0; i < indexCount; i++) { |
| 107 | int index = pIndices[i]; |
| 108 | if ( index < minIndex ) { |
| 109 | minIndex = index; |
| 110 | } |
| 111 | if ( index > maxIndex ) { |
| 112 | maxIndex = index; |
| 113 | } |
| 114 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 115 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 116 | if ( maxIndex * 3 > positionsLength) { |
| 117 | return -1; |
| 118 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 119 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 120 | transformedIndexCount = maxIndex - minIndex + 1; |
| 121 | pTransformed = (float*) mallocHelper.alloc(transformedIndexCount * 4 * sizeof(float)); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 122 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 123 | if (pTransformed == 0 ) { |
| 124 | return -2; |
| 125 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 126 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 127 | // Transform the vertices |
| 128 | { |
| 129 | const float* pSrc = pPositions + 3 * minIndex; |
| 130 | float* pDst = pTransformed; |
| 131 | for (int i = 0; i < transformedIndexCount; i++, pSrc += 3, pDst += 4) { |
| 132 | mx4transform(pSrc[0], pSrc[1], pSrc[2], 1.0f, pWS, pDst); |
| 133 | } |
| 134 | } |
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 | // Clip the triangles |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 137 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 138 | Poly poly; |
| 139 | float* pDest = & poly.vert[0].sx; |
| 140 | for (int i = 0; i < indexCount; i += 3) { |
| 141 | poly.n = 3; |
| 142 | memcpy(pDest , pTransformed + 4 * (pIndices[i ] - minIndex), 4 * sizeof(float)); |
| 143 | memcpy(pDest + 4, pTransformed + 4 * (pIndices[i + 1] - minIndex), 4 * sizeof(float)); |
| 144 | memcpy(pDest + 8, pTransformed + 4 * (pIndices[i + 2] - minIndex), 4 * sizeof(float)); |
| 145 | result = poly_clip_to_frustum(&poly); |
| 146 | if ( result != POLY_CLIP_OUT) { |
| 147 | return result; |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | return result; |
| 152 | } |
| 153 | |
| 154 | template<class JArray, class T> |
| 155 | class ArrayHelper { |
| 156 | public: |
| 157 | ArrayHelper(JNIEnv* env, JArray ref, jint offset, jint minSize) { |
| 158 | mEnv = env; |
| 159 | mRef = ref; |
| 160 | mOffset = offset; |
| 161 | mMinSize = minSize; |
| 162 | mBase = 0; |
| 163 | mReleaseParam = JNI_ABORT; |
| 164 | } |
| 165 | |
| 166 | ~ArrayHelper() { |
| 167 | if (mBase) { |
| 168 | mEnv->ReleasePrimitiveArrayCritical(mRef, mBase, mReleaseParam); |
| 169 | } |
| 170 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 171 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 172 | // We seperate the bounds check from the initialization because we want to |
| 173 | // be able to bounds-check multiple arrays, and we can't throw an exception |
| 174 | // after we've called GetPrimitiveArrayCritical. |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 175 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 176 | // Return true if the bounds check succeeded |
| 177 | // Else instruct the runtime to throw an exception |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 178 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 179 | bool check() { |
| 180 | if ( ! mRef) { |
| 181 | mEnv->ThrowNew(gIAEClass, "array == null"); |
| 182 | return false; |
| 183 | } |
| 184 | if ( mOffset < 0) { |
| 185 | mEnv->ThrowNew(gIAEClass, "offset < 0"); |
| 186 | return false; |
| 187 | } |
| 188 | mLength = mEnv->GetArrayLength(mRef) - mOffset; |
| 189 | if (mLength < mMinSize ) { |
| 190 | mEnv->ThrowNew(gIAEClass, "length - offset < n"); |
| 191 | return false; |
| 192 | } |
| 193 | return true; |
| 194 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 195 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 196 | // Bind the array. |
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 | void bind() { |
| 199 | mBase = (T*) mEnv->GetPrimitiveArrayCritical(mRef, (jboolean *) 0); |
| 200 | mData = mBase + mOffset; |
| 201 | } |
| 202 | |
| 203 | void commitChanges() { |
| 204 | mReleaseParam = 0; |
| 205 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 206 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 207 | T* mData; |
| 208 | int mLength; |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 209 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 210 | private: |
| 211 | T* mBase; |
| 212 | JNIEnv* mEnv; |
| 213 | JArray mRef; |
| 214 | jint mOffset; |
| 215 | jint mMinSize; |
| 216 | int mReleaseParam; |
| 217 | }; |
| 218 | |
| 219 | typedef ArrayHelper<jfloatArray, float> FloatArrayHelper; |
| 220 | typedef ArrayHelper<jcharArray, unsigned short> UnsignedShortArrayHelper; |
| 221 | typedef ArrayHelper<jintArray, int> IntArrayHelper; |
| 222 | typedef ArrayHelper<jbyteArray, unsigned char> ByteArrayHelper; |
| 223 | |
| 224 | inline float distance2(float x, float y, float z) { |
| 225 | return x * x + y * y + z * z; |
| 226 | } |
| 227 | |
| 228 | inline float distance(float x, float y, float z) { |
| 229 | return sqrtf(distance2(x, y, z)); |
| 230 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 231 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 232 | static |
| 233 | void util_computeBoundingSphere(JNIEnv *env, jclass clazz, |
| 234 | jfloatArray positions_ref, jint positionsOffset, jint positionsCount, |
| 235 | jfloatArray sphere_ref, jint sphereOffset) { |
| 236 | FloatArrayHelper positions(env, positions_ref, positionsOffset, 0); |
| 237 | FloatArrayHelper sphere(env, sphere_ref, sphereOffset, 4); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 238 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 239 | bool checkOK = positions.check() && sphere.check(); |
| 240 | if (! checkOK) { |
| 241 | return; |
| 242 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 243 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 244 | positions.bind(); |
| 245 | sphere.bind(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 246 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 247 | if ( positionsCount < 1 ) { |
| 248 | env->ThrowNew(gIAEClass, "positionsCount < 1"); |
| 249 | return; |
| 250 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 251 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 252 | const float* pSrc = positions.mData; |
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 | // find bounding box |
| 255 | float x0 = *pSrc++; |
| 256 | float x1 = x0; |
| 257 | float y0 = *pSrc++; |
| 258 | float y1 = y0; |
| 259 | float z0 = *pSrc++; |
| 260 | float z1 = z0; |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 261 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 262 | for(int i = 1; i < positionsCount; i++) { |
| 263 | { |
| 264 | float x = *pSrc++; |
| 265 | if (x < x0) { |
| 266 | x0 = x; |
| 267 | } |
| 268 | else if (x > x1) { |
| 269 | x1 = x; |
| 270 | } |
| 271 | } |
| 272 | { |
| 273 | float y = *pSrc++; |
| 274 | if (y < y0) { |
| 275 | y0 = y; |
| 276 | } |
| 277 | else if (y > y1) { |
| 278 | y1 = y; |
| 279 | } |
| 280 | } |
| 281 | { |
| 282 | float z = *pSrc++; |
| 283 | if (z < z0) { |
| 284 | z0 = z; |
| 285 | } |
| 286 | else if (z > z1) { |
| 287 | z1 = z; |
| 288 | } |
| 289 | } |
| 290 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 291 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 292 | // Because we know our input meshes fit pretty well into bounding boxes, |
| 293 | // just take the diagonal of the box as defining our sphere. |
| 294 | float* pSphere = sphere.mData; |
| 295 | float dx = x1 - x0; |
| 296 | float dy = y1 - y0; |
| 297 | float dz = z1 - z0; |
| 298 | *pSphere++ = x0 + dx * 0.5f; |
| 299 | *pSphere++ = y0 + dy * 0.5f; |
| 300 | *pSphere++ = z0 + dz * 0.5f; |
| 301 | *pSphere++ = distance(dx, dy, dz) * 0.5f; |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 302 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 303 | sphere.commitChanges(); |
| 304 | } |
| 305 | |
| 306 | static void normalizePlane(float* p) { |
| 307 | float rdist = 1.0f / distance(p[0], p[1], p[2]); |
| 308 | for(int i = 0; i < 4; i++) { |
| 309 | p[i] *= rdist; |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | static inline float dot3(float x0, float y0, float z0, float x1, float y1, float z1) { |
| 314 | return x0 * x1 + y0 * y1 + z0 * z1; |
| 315 | } |
| 316 | |
| 317 | static inline float signedDistance(const float* pPlane, float x, float y, float z) { |
| 318 | return dot3(pPlane[0], pPlane[1], pPlane[2], x, y, z) + pPlane[3]; |
| 319 | } |
| 320 | |
| 321 | // Return true if the sphere intersects or is inside the frustum |
| 322 | |
| 323 | static bool sphereHitsFrustum(const float* pFrustum, const float* pSphere) { |
| 324 | float x = pSphere[0]; |
| 325 | float y = pSphere[1]; |
| 326 | float z = pSphere[2]; |
| 327 | float negRadius = -pSphere[3]; |
| 328 | for (int i = 0; i < 6; i++, pFrustum += 4) { |
| 329 | if (signedDistance(pFrustum, x, y, z) <= negRadius) { |
| 330 | return false; |
| 331 | } |
| 332 | } |
| 333 | return true; |
| 334 | } |
| 335 | |
| 336 | static void computeFrustum(const float* m, float* f) { |
| 337 | float m3 = m[3]; |
| 338 | float m7 = m[7]; |
| 339 | float m11 = m[11]; |
| 340 | float m15 = m[15]; |
| 341 | // right |
| 342 | f[0] = m3 - m[0]; |
| 343 | f[1] = m7 - m[4]; |
| 344 | f[2] = m11 - m[8]; |
| 345 | f[3] = m15 - m[12]; |
| 346 | normalizePlane(f); |
| 347 | f+= 4; |
| 348 | |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 349 | // left |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 350 | f[0] = m3 + m[0]; |
| 351 | f[1] = m7 + m[4]; |
| 352 | f[2] = m11 + m[8]; |
| 353 | f[3] = m15 + m[12]; |
| 354 | normalizePlane(f); |
| 355 | f+= 4; |
| 356 | |
| 357 | // top |
| 358 | f[0] = m3 - m[1]; |
| 359 | f[1] = m7 - m[5]; |
| 360 | f[2] = m11 - m[9]; |
| 361 | f[3] = m15 - m[13]; |
| 362 | normalizePlane(f); |
| 363 | f+= 4; |
| 364 | |
| 365 | // bottom |
| 366 | f[0] = m3 + m[1]; |
| 367 | f[1] = m7 + m[5]; |
| 368 | f[2] = m11 + m[9]; |
| 369 | f[3] = m15 + m[13]; |
| 370 | normalizePlane(f); |
| 371 | f+= 4; |
| 372 | |
| 373 | // far |
| 374 | f[0] = m3 - m[2]; |
| 375 | f[1] = m7 - m[6]; |
| 376 | f[2] = m11 - m[10]; |
| 377 | f[3] = m15 - m[14]; |
| 378 | normalizePlane(f); |
| 379 | f+= 4; |
| 380 | |
| 381 | // near |
| 382 | f[0] = m3 + m[2]; |
| 383 | f[1] = m7 + m[6]; |
| 384 | f[2] = m11 + m[10]; |
| 385 | f[3] = m15 + m[14]; |
| 386 | normalizePlane(f); |
| 387 | } |
| 388 | |
| 389 | static |
| 390 | int util_frustumCullSpheres(JNIEnv *env, jclass clazz, |
| 391 | jfloatArray mvp_ref, jint mvpOffset, |
| 392 | jfloatArray spheres_ref, jint spheresOffset, jint spheresCount, |
| 393 | jintArray results_ref, jint resultsOffset, jint resultsCapacity) { |
| 394 | float frustum[6*4]; |
| 395 | int outputCount; |
| 396 | int* pResults; |
| 397 | float* pSphere; |
| 398 | FloatArrayHelper mvp(env, mvp_ref, mvpOffset, 16); |
| 399 | FloatArrayHelper spheres(env, spheres_ref, spheresOffset, spheresCount * 4); |
| 400 | IntArrayHelper results(env, results_ref, resultsOffset, resultsCapacity); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 401 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 402 | bool initializedOK = mvp.check() && spheres.check() && results.check(); |
| 403 | if (! initializedOK) { |
| 404 | return -1; |
| 405 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 406 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 407 | mvp.bind(); |
| 408 | spheres.bind(); |
| 409 | results.bind(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 410 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 411 | computeFrustum(mvp.mData, frustum); |
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 | // Cull the spheres |
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 | pSphere = spheres.mData; |
| 416 | pResults = results.mData; |
| 417 | outputCount = 0; |
| 418 | for(int i = 0; i < spheresCount; i++, pSphere += 4) { |
| 419 | if (sphereHitsFrustum(frustum, pSphere)) { |
| 420 | if (outputCount < resultsCapacity) { |
| 421 | *pResults++ = i; |
| 422 | } |
| 423 | outputCount++; |
| 424 | } |
| 425 | } |
| 426 | results.commitChanges(); |
| 427 | return outputCount; |
| 428 | } |
| 429 | |
| 430 | /* |
| 431 | public native int visibilityTest(float[] ws, int wsOffset, |
| 432 | float[] positions, int positionsOffset, |
| 433 | char[] indices, int indicesOffset, int indexCount); |
| 434 | */ |
| 435 | |
| 436 | static |
| 437 | int util_visibilityTest(JNIEnv *env, jclass clazz, |
| 438 | jfloatArray ws_ref, jint wsOffset, |
| 439 | jfloatArray positions_ref, jint positionsOffset, |
| 440 | jcharArray indices_ref, jint indicesOffset, jint indexCount) { |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 441 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 442 | FloatArrayHelper ws(env, ws_ref, wsOffset, 16); |
| 443 | FloatArrayHelper positions(env, positions_ref, positionsOffset, 0); |
| 444 | UnsignedShortArrayHelper indices(env, indices_ref, indicesOffset, 0); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 445 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 446 | bool checkOK = ws.check() && positions.check() && indices.check(); |
| 447 | if (! checkOK) { |
| 448 | // Return value will be ignored, because an exception has been thrown. |
| 449 | return -1; |
| 450 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 451 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 452 | if (indices.mLength < indexCount) { |
| 453 | env->ThrowNew(gIAEClass, "length < offset + indexCount"); |
| 454 | // Return value will be ignored, because an exception has been thrown. |
| 455 | return -1; |
| 456 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 457 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 458 | ws.bind(); |
| 459 | positions.bind(); |
| 460 | indices.bind(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 461 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 462 | return visibilityTest(ws.mData, |
| 463 | positions.mData, positions.mLength, |
| 464 | indices.mData, indexCount); |
| 465 | } |
| 466 | |
| 467 | #define I(_i, _j) ((_j)+ 4*(_i)) |
| 468 | |
| 469 | static |
| 470 | void multiplyMM(float* r, const float* lhs, const float* rhs) |
| 471 | { |
| 472 | for (int i=0 ; i<4 ; i++) { |
| 473 | register const float rhs_i0 = rhs[ I(i,0) ]; |
| 474 | register float ri0 = lhs[ I(0,0) ] * rhs_i0; |
| 475 | register float ri1 = lhs[ I(0,1) ] * rhs_i0; |
| 476 | register float ri2 = lhs[ I(0,2) ] * rhs_i0; |
| 477 | register float ri3 = lhs[ I(0,3) ] * rhs_i0; |
| 478 | for (int j=1 ; j<4 ; j++) { |
| 479 | register const float rhs_ij = rhs[ I(i,j) ]; |
| 480 | ri0 += lhs[ I(j,0) ] * rhs_ij; |
| 481 | ri1 += lhs[ I(j,1) ] * rhs_ij; |
| 482 | ri2 += lhs[ I(j,2) ] * rhs_ij; |
| 483 | ri3 += lhs[ I(j,3) ] * rhs_ij; |
| 484 | } |
| 485 | r[ I(i,0) ] = ri0; |
| 486 | r[ I(i,1) ] = ri1; |
| 487 | r[ I(i,2) ] = ri2; |
| 488 | r[ I(i,3) ] = ri3; |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | static |
| 493 | void util_multiplyMM(JNIEnv *env, jclass clazz, |
| 494 | jfloatArray result_ref, jint resultOffset, |
| 495 | jfloatArray lhs_ref, jint lhsOffset, |
| 496 | jfloatArray rhs_ref, jint rhsOffset) { |
| 497 | |
| 498 | FloatArrayHelper resultMat(env, result_ref, resultOffset, 16); |
| 499 | FloatArrayHelper lhs(env, lhs_ref, lhsOffset, 16); |
| 500 | FloatArrayHelper rhs(env, rhs_ref, rhsOffset, 16); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 501 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 502 | bool checkOK = resultMat.check() && lhs.check() && rhs.check(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 503 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 504 | if ( !checkOK ) { |
| 505 | return; |
| 506 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 507 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 508 | resultMat.bind(); |
| 509 | lhs.bind(); |
| 510 | rhs.bind(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 511 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 512 | multiplyMM(resultMat.mData, lhs.mData, rhs.mData); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 513 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 514 | resultMat.commitChanges(); |
| 515 | } |
| 516 | |
| 517 | static |
| 518 | void multiplyMV(float* r, const float* lhs, const float* rhs) |
| 519 | { |
| 520 | mx4transform(rhs[0], rhs[1], rhs[2], rhs[3], lhs, r); |
| 521 | } |
| 522 | |
| 523 | static |
| 524 | void util_multiplyMV(JNIEnv *env, jclass clazz, |
| 525 | jfloatArray result_ref, jint resultOffset, |
| 526 | jfloatArray lhs_ref, jint lhsOffset, |
| 527 | jfloatArray rhs_ref, jint rhsOffset) { |
| 528 | |
| 529 | FloatArrayHelper resultV(env, result_ref, resultOffset, 4); |
| 530 | FloatArrayHelper lhs(env, lhs_ref, lhsOffset, 16); |
| 531 | FloatArrayHelper rhs(env, rhs_ref, rhsOffset, 4); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 532 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 533 | bool checkOK = resultV.check() && lhs.check() && rhs.check(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 534 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 535 | if ( !checkOK ) { |
| 536 | return; |
| 537 | } |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 538 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 539 | resultV.bind(); |
| 540 | lhs.bind(); |
| 541 | rhs.bind(); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 542 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 543 | multiplyMV(resultV.mData, lhs.mData, rhs.mData); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 544 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 545 | resultV.commitChanges(); |
| 546 | } |
| 547 | |
| 548 | // --------------------------------------------------------------------------- |
| 549 | |
| 550 | static jfieldID nativeBitmapID = 0; |
| 551 | |
| 552 | void nativeUtilsClassInit(JNIEnv *env, jclass clazz) |
| 553 | { |
| 554 | jclass bitmapClass = env->FindClass("android/graphics/Bitmap"); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 555 | nativeBitmapID = env->GetFieldID(bitmapClass, "mNativeBitmap", "I"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 556 | } |
| 557 | |
| 558 | static int checkFormat(SkBitmap::Config config, int format, int type) |
| 559 | { |
| 560 | switch(config) { |
| 561 | case SkBitmap::kIndex8_Config: |
| 562 | if (format == GL_PALETTE8_RGBA8_OES) |
| 563 | return 0; |
| 564 | case SkBitmap::kARGB_8888_Config: |
| 565 | case SkBitmap::kA8_Config: |
| 566 | if (type == GL_UNSIGNED_BYTE) |
| 567 | return 0; |
| 568 | case SkBitmap::kARGB_4444_Config: |
| 569 | case SkBitmap::kRGB_565_Config: |
| 570 | switch (type) { |
| 571 | case GL_UNSIGNED_SHORT_4_4_4_4: |
| 572 | case GL_UNSIGNED_SHORT_5_6_5: |
| 573 | case GL_UNSIGNED_SHORT_5_5_5_1: |
| 574 | return 0; |
| 575 | case GL_UNSIGNED_BYTE: |
| 576 | if (format == GL_LUMINANCE_ALPHA) |
| 577 | return 0; |
| 578 | } |
| 579 | break; |
| 580 | default: |
| 581 | break; |
| 582 | } |
| 583 | return -1; |
| 584 | } |
| 585 | |
| 586 | static int getInternalFormat(SkBitmap::Config config) |
| 587 | { |
| 588 | switch(config) { |
| 589 | case SkBitmap::kA8_Config: |
| 590 | return GL_ALPHA; |
| 591 | case SkBitmap::kARGB_4444_Config: |
| 592 | return GL_RGBA; |
| 593 | case SkBitmap::kARGB_8888_Config: |
| 594 | return GL_RGBA; |
| 595 | case SkBitmap::kIndex8_Config: |
| 596 | return GL_PALETTE8_RGBA8_OES; |
| 597 | case SkBitmap::kRGB_565_Config: |
| 598 | return GL_RGB; |
| 599 | default: |
| 600 | return -1; |
| 601 | } |
| 602 | } |
| 603 | |
Jack Palevich | 708c17b | 2009-03-24 21:05:22 -0700 | [diff] [blame] | 604 | static int getType(SkBitmap::Config config) |
| 605 | { |
| 606 | switch(config) { |
| 607 | case SkBitmap::kA8_Config: |
| 608 | return GL_UNSIGNED_BYTE; |
| 609 | case SkBitmap::kARGB_4444_Config: |
| 610 | return GL_UNSIGNED_SHORT_4_4_4_4; |
| 611 | case SkBitmap::kARGB_8888_Config: |
| 612 | return GL_UNSIGNED_BYTE; |
| 613 | case SkBitmap::kIndex8_Config: |
| 614 | return -1; // No type for compressed data. |
| 615 | case SkBitmap::kRGB_565_Config: |
| 616 | return GL_UNSIGNED_SHORT_5_6_5; |
| 617 | default: |
| 618 | return -1; |
| 619 | } |
| 620 | } |
| 621 | |
| 622 | static jint util_getInternalFormat(JNIEnv *env, jclass clazz, |
| 623 | jobject jbitmap) |
| 624 | { |
| 625 | SkBitmap const * nativeBitmap = |
| 626 | (SkBitmap const *)env->GetIntField(jbitmap, nativeBitmapID); |
| 627 | const SkBitmap& bitmap(*nativeBitmap); |
| 628 | SkBitmap::Config config = bitmap.getConfig(); |
| 629 | return getInternalFormat(config); |
| 630 | } |
| 631 | |
| 632 | static jint util_getType(JNIEnv *env, jclass clazz, |
| 633 | jobject jbitmap) |
| 634 | { |
| 635 | SkBitmap const * nativeBitmap = |
| 636 | (SkBitmap const *)env->GetIntField(jbitmap, nativeBitmapID); |
| 637 | const SkBitmap& bitmap(*nativeBitmap); |
| 638 | SkBitmap::Config config = bitmap.getConfig(); |
| 639 | return getType(config); |
| 640 | } |
| 641 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 642 | static jint util_texImage2D(JNIEnv *env, jclass clazz, |
| 643 | jint target, jint level, jint internalformat, |
| 644 | jobject jbitmap, jint type, jint border) |
| 645 | { |
| 646 | SkBitmap const * nativeBitmap = |
| 647 | (SkBitmap const *)env->GetIntField(jbitmap, nativeBitmapID); |
| 648 | const SkBitmap& bitmap(*nativeBitmap); |
| 649 | SkBitmap::Config config = bitmap.getConfig(); |
| 650 | if (internalformat < 0) { |
| 651 | internalformat = getInternalFormat(config); |
| 652 | } |
Jack Palevich | 708c17b | 2009-03-24 21:05:22 -0700 | [diff] [blame] | 653 | if (type < 0) { |
| 654 | type = getType(config); |
| 655 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 656 | int err = checkFormat(config, internalformat, type); |
| 657 | if (err) |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 658 | return err; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 659 | bitmap.lockPixels(); |
| 660 | const int w = bitmap.width(); |
| 661 | const int h = bitmap.height(); |
| 662 | const void* p = bitmap.getPixels(); |
| 663 | if (internalformat == GL_PALETTE8_RGBA8_OES) { |
| 664 | if (sizeof(SkPMColor) != sizeof(uint32_t)) { |
| 665 | err = -1; |
| 666 | goto error; |
| 667 | } |
| 668 | const size_t size = bitmap.getSize(); |
| 669 | const size_t palette_size = 256*sizeof(SkPMColor); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 670 | const size_t imageSize = size + palette_size; |
| 671 | void* const data = malloc(imageSize); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 672 | if (data) { |
| 673 | void* const pixels = (char*)data + palette_size; |
| 674 | SkColorTable* ctable = bitmap.getColorTable(); |
| 675 | memcpy(data, ctable->lockColors(), ctable->count() * sizeof(SkPMColor)); |
| 676 | memcpy(pixels, p, size); |
| 677 | ctable->unlockColors(false); |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 678 | glCompressedTexImage2D(target, level, internalformat, w, h, border, imageSize, data); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 679 | free(data); |
| 680 | } else { |
| 681 | err = -1; |
| 682 | } |
| 683 | } else { |
| 684 | glTexImage2D(target, level, internalformat, w, h, border, internalformat, type, p); |
| 685 | } |
| 686 | error: |
| 687 | bitmap.unlockPixels(); |
| 688 | return err; |
| 689 | } |
| 690 | |
| 691 | static jint util_texSubImage2D(JNIEnv *env, jclass clazz, |
| 692 | jint target, jint level, jint xoffset, jint yoffset, |
| 693 | jobject jbitmap, jint format, jint type) |
| 694 | { |
| 695 | SkBitmap const * nativeBitmap = |
| 696 | (SkBitmap const *)env->GetIntField(jbitmap, nativeBitmapID); |
| 697 | const SkBitmap& bitmap(*nativeBitmap); |
| 698 | SkBitmap::Config config = bitmap.getConfig(); |
| 699 | if (format < 0) { |
| 700 | format = getInternalFormat(config); |
| 701 | if (format == GL_PALETTE8_RGBA8_OES) |
| 702 | return -1; // glCompressedTexSubImage2D() not supported |
| 703 | } |
| 704 | int err = checkFormat(config, format, type); |
| 705 | if (err) |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 706 | return err; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 707 | bitmap.lockPixels(); |
| 708 | const int w = bitmap.width(); |
| 709 | const int h = bitmap.height(); |
| 710 | const void* p = bitmap.getPixels(); |
| 711 | glTexSubImage2D(target, level, xoffset, yoffset, w, h, format, type, p); |
| 712 | bitmap.unlockPixels(); |
| 713 | return 0; |
| 714 | } |
| 715 | |
| 716 | /* |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 717 | * ETC1 methods. |
| 718 | */ |
| 719 | |
| 720 | static jclass nioAccessClass; |
| 721 | static jclass bufferClass; |
| 722 | static jmethodID getBasePointerID; |
| 723 | static jmethodID getBaseArrayID; |
| 724 | static jmethodID getBaseArrayOffsetID; |
| 725 | static jfieldID positionID; |
| 726 | static jfieldID limitID; |
| 727 | static jfieldID elementSizeShiftID; |
| 728 | |
| 729 | /* Cache method IDs each time the class is loaded. */ |
| 730 | |
| 731 | static void |
| 732 | nativeClassInitBuffer(JNIEnv *_env) |
| 733 | { |
| 734 | jclass nioAccessClassLocal = _env->FindClass("java/nio/NIOAccess"); |
| 735 | nioAccessClass = (jclass) _env->NewGlobalRef(nioAccessClassLocal); |
| 736 | |
| 737 | jclass bufferClassLocal = _env->FindClass("java/nio/Buffer"); |
| 738 | bufferClass = (jclass) _env->NewGlobalRef(bufferClassLocal); |
| 739 | |
| 740 | getBasePointerID = _env->GetStaticMethodID(nioAccessClass, |
| 741 | "getBasePointer", "(Ljava/nio/Buffer;)J"); |
| 742 | getBaseArrayID = _env->GetStaticMethodID(nioAccessClass, |
| 743 | "getBaseArray", "(Ljava/nio/Buffer;)Ljava/lang/Object;"); |
| 744 | getBaseArrayOffsetID = _env->GetStaticMethodID(nioAccessClass, |
| 745 | "getBaseArrayOffset", "(Ljava/nio/Buffer;)I"); |
| 746 | positionID = _env->GetFieldID(bufferClass, "position", "I"); |
| 747 | limitID = _env->GetFieldID(bufferClass, "limit", "I"); |
| 748 | elementSizeShiftID = |
| 749 | _env->GetFieldID(bufferClass, "_elementSizeShift", "I"); |
| 750 | } |
| 751 | |
| 752 | static void * |
| 753 | getPointer(JNIEnv *_env, jobject buffer, jint *remaining) |
| 754 | { |
| 755 | jint position; |
| 756 | jint limit; |
| 757 | jint elementSizeShift; |
| 758 | jlong pointer; |
| 759 | jint offset; |
| 760 | void *data; |
| 761 | |
| 762 | position = _env->GetIntField(buffer, positionID); |
| 763 | limit = _env->GetIntField(buffer, limitID); |
| 764 | elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID); |
| 765 | *remaining = (limit - position) << elementSizeShift; |
| 766 | pointer = _env->CallStaticLongMethod(nioAccessClass, |
| 767 | getBasePointerID, buffer); |
| 768 | if (pointer != 0L) { |
| 769 | return (void *) (jint) pointer; |
| 770 | } |
| 771 | return NULL; |
| 772 | } |
| 773 | |
| 774 | class BufferHelper { |
| 775 | public: |
| 776 | BufferHelper(JNIEnv *env, jobject buffer) { |
| 777 | mEnv = env; |
| 778 | mBuffer = buffer; |
| 779 | mData = NULL; |
| 780 | mRemaining = 0; |
| 781 | } |
| 782 | |
| 783 | bool checkPointer(const char* errorMessage) { |
| 784 | if (mBuffer) { |
| 785 | mData = getPointer(mEnv, mBuffer, &mRemaining); |
| 786 | if (mData == NULL) { |
| 787 | mEnv->ThrowNew(gIAEClass, errorMessage); |
| 788 | } |
| 789 | return mData != NULL; |
| 790 | } else { |
| 791 | mEnv->ThrowNew(gIAEClass, errorMessage); |
| 792 | return false; |
| 793 | } |
| 794 | } |
| 795 | |
| 796 | inline void* getData() { |
| 797 | return mData; |
| 798 | } |
| 799 | |
| 800 | inline jint remaining() { |
| 801 | return mRemaining; |
| 802 | } |
| 803 | |
| 804 | private: |
| 805 | JNIEnv* mEnv; |
| 806 | jobject mBuffer; |
| 807 | void* mData; |
| 808 | jint mRemaining; |
| 809 | }; |
| 810 | |
| 811 | /** |
| 812 | * Encode a block of pixels. |
| 813 | * |
| 814 | * @param in a pointer to a ETC1_DECODED_BLOCK_SIZE array of bytes that represent a |
| 815 | * 4 x 4 square of 3-byte pixels in form R, G, B. Byte (3 * (x + 4 * y) is the R |
| 816 | * value of pixel (x, y). |
| 817 | * |
| 818 | * @param validPixelMask is a 16-bit mask where bit (1 << (x + y * 4)) indicates whether |
| 819 | * the corresponding (x,y) pixel is valid. Invalid pixel color values are ignored when compressing. |
| 820 | * |
| 821 | * @param out an ETC1 compressed version of the data. |
| 822 | * |
| 823 | */ |
| 824 | static void etc1_encodeBlock(JNIEnv *env, jclass clazz, |
| 825 | jobject in, jint validPixelMask, jobject out) { |
| 826 | if (validPixelMask < 0 || validPixelMask > 15) { |
| 827 | env->ThrowNew(gIAEClass, "validPixelMask"); |
| 828 | return; |
| 829 | } |
| 830 | BufferHelper inB(env, in); |
| 831 | BufferHelper outB(env, out); |
| 832 | if (inB.checkPointer("in") && outB.checkPointer("out")) { |
| 833 | if (inB.remaining() < ETC1_DECODED_BLOCK_SIZE) { |
| 834 | env->ThrowNew(gIAEClass, "in's remaining data < DECODED_BLOCK_SIZE"); |
| 835 | } else if (outB.remaining() < ETC1_ENCODED_BLOCK_SIZE) { |
| 836 | env->ThrowNew(gIAEClass, "out's remaining data < ENCODED_BLOCK_SIZE"); |
| 837 | } else { |
| 838 | etc1_encode_block((etc1_byte*) inB.getData(), validPixelMask, |
| 839 | (etc1_byte*) outB.getData()); |
| 840 | } |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | /** |
| 845 | * Decode a block of pixels. |
| 846 | * |
| 847 | * @param in an ETC1 compressed version of the data. |
| 848 | * |
| 849 | * @param out a pointer to a ETC_DECODED_BLOCK_SIZE array of bytes that represent a |
| 850 | * 4 x 4 square of 3-byte pixels in form R, G, B. Byte (3 * (x + 4 * y) is the R |
| 851 | * value of pixel (x, y). |
| 852 | */ |
| 853 | static void etc1_decodeBlock(JNIEnv *env, jclass clazz, |
| 854 | jobject in, jobject out){ |
| 855 | BufferHelper inB(env, in); |
| 856 | BufferHelper outB(env, out); |
| 857 | if (inB.checkPointer("in") && outB.checkPointer("out")) { |
| 858 | if (inB.remaining() < ETC1_ENCODED_BLOCK_SIZE) { |
| 859 | env->ThrowNew(gIAEClass, "in's remaining data < ENCODED_BLOCK_SIZE"); |
| 860 | } else if (outB.remaining() < ETC1_DECODED_BLOCK_SIZE) { |
| 861 | env->ThrowNew(gIAEClass, "out's remaining data < DECODED_BLOCK_SIZE"); |
| 862 | } else { |
| 863 | etc1_decode_block((etc1_byte*) inB.getData(), |
| 864 | (etc1_byte*) outB.getData()); |
| 865 | } |
| 866 | } |
| 867 | } |
| 868 | |
| 869 | /** |
| 870 | * Return the size of the encoded image data (does not include size of PKM header). |
| 871 | */ |
| 872 | static jint etc1_getEncodedDataSize(JNIEnv *env, jclass clazz, |
| 873 | jint width, jint height) { |
| 874 | return etc1_get_encoded_data_size(width, height); |
| 875 | } |
| 876 | |
| 877 | /** |
| 878 | * Encode an entire image. |
| 879 | * @param in pointer to the image data. Formatted such that |
| 880 | * pixel (x,y) is at pIn + pixelSize * x + stride * y + redOffset; |
| 881 | * @param out pointer to encoded data. Must be large enough to store entire encoded image. |
| 882 | */ |
| 883 | static void etc1_encodeImage(JNIEnv *env, jclass clazz, |
| 884 | jobject in, jint width, jint height, |
| 885 | jint pixelSize, jint stride, jobject out) { |
| 886 | if (pixelSize < 2 || pixelSize > 3) { |
| 887 | env->ThrowNew(gIAEClass, "pixelSize must be 2 or 3"); |
| 888 | return; |
| 889 | } |
| 890 | BufferHelper inB(env, in); |
| 891 | BufferHelper outB(env, out); |
| 892 | if (inB.checkPointer("in") && outB.checkPointer("out")) { |
| 893 | jint imageSize = stride * height; |
| 894 | jint encodedImageSize = etc1_get_encoded_data_size(width, height); |
| 895 | if (inB.remaining() < imageSize) { |
| 896 | env->ThrowNew(gIAEClass, "in's remaining data < image size"); |
| 897 | } else if (outB.remaining() < encodedImageSize) { |
| 898 | env->ThrowNew(gIAEClass, "out's remaining data < encoded image size"); |
| 899 | } else { |
| 900 | int result = etc1_encode_image((etc1_byte*) inB.getData(), |
| 901 | width, height, pixelSize, |
| 902 | stride, |
| 903 | (etc1_byte*) outB.getData()); |
| 904 | } |
| 905 | } |
| 906 | } |
| 907 | |
| 908 | /** |
| 909 | * Decode an entire image. |
| 910 | * @param in the encoded data. |
| 911 | * @param out pointer to the image data. Will be written such that |
| 912 | * pixel (x,y) is at pIn + pixelSize * x + stride * y. Must be |
| 913 | * large enough to store entire image. |
| 914 | */ |
| 915 | static void etc1_decodeImage(JNIEnv *env, jclass clazz, |
| 916 | jobject in, jobject out, |
| 917 | jint width, jint height, |
| 918 | jint pixelSize, jint stride) { |
| 919 | if (pixelSize < 2 || pixelSize > 3) { |
| 920 | env->ThrowNew(gIAEClass, "pixelSize must be 2 or 3"); |
| 921 | return; |
| 922 | } |
| 923 | BufferHelper inB(env, in); |
| 924 | BufferHelper outB(env, out); |
| 925 | if (inB.checkPointer("in") && outB.checkPointer("out")) { |
| 926 | jint imageSize = stride * height; |
| 927 | jint encodedImageSize = etc1_get_encoded_data_size(width, height); |
| 928 | if (inB.remaining() < encodedImageSize) { |
| 929 | env->ThrowNew(gIAEClass, "in's remaining data < encoded image size"); |
| 930 | } else if (outB.remaining() < imageSize) { |
| 931 | env->ThrowNew(gIAEClass, "out's remaining data < image size"); |
| 932 | } else { |
| 933 | int result = etc1_decode_image((etc1_byte*) inB.getData(), |
| 934 | (etc1_byte*) outB.getData(), |
| 935 | width, height, pixelSize, |
| 936 | stride); |
| 937 | } |
| 938 | } |
| 939 | } |
| 940 | |
| 941 | /** |
| 942 | * Format a PKM header |
| 943 | */ |
| 944 | static void etc1_formatHeader(JNIEnv *env, jclass clazz, |
| 945 | jobject header, jint width, jint height) { |
| 946 | BufferHelper headerB(env, header); |
| 947 | if (headerB.checkPointer("header") ){ |
| 948 | if (headerB.remaining() < ETC_PKM_HEADER_SIZE) { |
| 949 | env->ThrowNew(gIAEClass, "header's remaining data < ETC_PKM_HEADER_SIZE"); |
| 950 | } else { |
| 951 | etc1_pkm_format_header((etc1_byte*) headerB.getData(), width, height); |
| 952 | } |
| 953 | } |
| 954 | } |
| 955 | |
| 956 | /** |
| 957 | * Check if a PKM header is correctly formatted. |
| 958 | */ |
| 959 | static jboolean etc1_isValid(JNIEnv *env, jclass clazz, |
| 960 | jobject header) { |
| 961 | jboolean result = false; |
| 962 | BufferHelper headerB(env, header); |
| 963 | if (headerB.checkPointer("header") ){ |
| 964 | if (headerB.remaining() < ETC_PKM_HEADER_SIZE) { |
| 965 | env->ThrowNew(gIAEClass, "header's remaining data < ETC_PKM_HEADER_SIZE"); |
| 966 | } else { |
| 967 | result = etc1_pkm_is_valid((etc1_byte*) headerB.getData()); |
| 968 | } |
| 969 | } |
| 970 | return result; |
| 971 | } |
| 972 | |
| 973 | /** |
| 974 | * Read the image width from a PKM header |
| 975 | */ |
| 976 | static jint etc1_getWidth(JNIEnv *env, jclass clazz, |
| 977 | jobject header) { |
| 978 | jint result = 0; |
| 979 | BufferHelper headerB(env, header); |
| 980 | if (headerB.checkPointer("header") ){ |
| 981 | if (headerB.remaining() < ETC_PKM_HEADER_SIZE) { |
| 982 | env->ThrowNew(gIAEClass, "header's remaining data < ETC_PKM_HEADER_SIZE"); |
| 983 | } else { |
| 984 | result = etc1_pkm_get_width((etc1_byte*) headerB.getData()); |
| 985 | } |
| 986 | } |
| 987 | return result; |
| 988 | } |
| 989 | |
| 990 | /** |
| 991 | * Read the image height from a PKM header |
| 992 | */ |
| 993 | static int etc1_getHeight(JNIEnv *env, jclass clazz, |
| 994 | jobject header) { |
| 995 | jint result = 0; |
| 996 | BufferHelper headerB(env, header); |
| 997 | if (headerB.checkPointer("header") ){ |
| 998 | if (headerB.remaining() < ETC_PKM_HEADER_SIZE) { |
| 999 | env->ThrowNew(gIAEClass, "header's remaining data < ETC_PKM_HEADER_SIZE"); |
| 1000 | } else { |
| 1001 | result = etc1_pkm_get_height((etc1_byte*) headerB.getData()); |
| 1002 | } |
| 1003 | } |
| 1004 | return result; |
| 1005 | } |
| 1006 | |
| 1007 | /* |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1008 | * JNI registration |
| 1009 | */ |
| 1010 | |
| 1011 | static void |
| 1012 | lookupClasses(JNIEnv* env) { |
| 1013 | gIAEClass = (jclass) env->NewGlobalRef( |
| 1014 | env->FindClass("java/lang/IllegalArgumentException")); |
| 1015 | gUOEClass = (jclass) env->NewGlobalRef( |
| 1016 | env->FindClass("java/lang/UnsupportedOperationException")); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 1017 | gAIOOBEClass = (jclass) env->NewGlobalRef( |
| 1018 | env->FindClass("java/lang/ArrayIndexOutOfBoundsException")); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1019 | } |
| 1020 | |
| 1021 | static JNINativeMethod gMatrixMethods[] = { |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 1022 | { "multiplyMM", "([FI[FI[FI)V", (void*)util_multiplyMM }, |
| 1023 | { "multiplyMV", "([FI[FI[FI)V", (void*)util_multiplyMV }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1024 | }; |
| 1025 | |
| 1026 | static JNINativeMethod gVisiblityMethods[] = { |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 1027 | { "computeBoundingSphere", "([FII[FI)V", (void*)util_computeBoundingSphere }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1028 | { "frustumCullSpheres", "([FI[FII[III)I", (void*)util_frustumCullSpheres }, |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 1029 | { "visibilityTest", "([FI[FI[CII)I", (void*)util_visibilityTest }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1030 | }; |
| 1031 | |
| 1032 | static JNINativeMethod gUtilsMethods[] = { |
| 1033 | {"nativeClassInit", "()V", (void*)nativeUtilsClassInit }, |
Jack Palevich | 106006c | 2009-08-31 17:42:50 -0700 | [diff] [blame] | 1034 | { "native_getInternalFormat", "(Landroid/graphics/Bitmap;)I", (void*) util_getInternalFormat }, |
| 1035 | { "native_getType", "(Landroid/graphics/Bitmap;)I", (void*) util_getType }, |
| 1036 | { "native_texImage2D", "(IIILandroid/graphics/Bitmap;II)I", (void*)util_texImage2D }, |
| 1037 | { "native_texSubImage2D", "(IIIILandroid/graphics/Bitmap;II)I", (void*)util_texSubImage2D }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1038 | }; |
| 1039 | |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 1040 | static JNINativeMethod gEtc1Methods[] = { |
| 1041 | { "encodeBlock", "(Ljava/nio/Buffer;ILjava/nio/Buffer;)V", (void*) etc1_encodeBlock }, |
| 1042 | { "decodeBlock", "(Ljava/nio/Buffer;Ljava/nio/Buffer;)V", (void*) etc1_decodeBlock }, |
| 1043 | { "getEncodedDataSize", "(II)I", (void*) etc1_getEncodedDataSize }, |
| 1044 | { "encodeImage", "(Ljava/nio/Buffer;IIIILjava/nio/Buffer;)V", (void*) etc1_encodeImage }, |
| 1045 | { "decodeImage", "(Ljava/nio/Buffer;Ljava/nio/Buffer;IIII)V", (void*) etc1_decodeImage }, |
| 1046 | { "formatHeader", "(Ljava/nio/Buffer;II)V", (void*) etc1_formatHeader }, |
| 1047 | { "isValid", "(Ljava/nio/Buffer;)Z", (void*) etc1_isValid }, |
| 1048 | { "getWidth", "(Ljava/nio/Buffer;)I", (void*) etc1_getWidth }, |
| 1049 | { "getHeight", "(Ljava/nio/Buffer;)I", (void*) etc1_getHeight }, |
| 1050 | }; |
| 1051 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1052 | typedef struct _ClassRegistrationInfo { |
| 1053 | const char* classPath; |
| 1054 | JNINativeMethod* methods; |
| 1055 | size_t methodCount; |
| 1056 | } ClassRegistrationInfo; |
| 1057 | |
| 1058 | static ClassRegistrationInfo gClasses[] = { |
| 1059 | {"android/opengl/Matrix", gMatrixMethods, NELEM(gMatrixMethods)}, |
| 1060 | {"android/opengl/Visibility", gVisiblityMethods, NELEM(gVisiblityMethods)}, |
| 1061 | {"android/opengl/GLUtils", gUtilsMethods, NELEM(gUtilsMethods)}, |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 1062 | {"android/opengl/ETC1", gEtc1Methods, NELEM(gEtc1Methods)}, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1063 | }; |
| 1064 | |
| 1065 | int register_android_opengl_classes(JNIEnv* env) |
| 1066 | { |
| 1067 | lookupClasses(env); |
Jack Palevich | a6276fd | 2009-12-28 19:31:43 +0800 | [diff] [blame] | 1068 | nativeClassInitBuffer(env); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1069 | int result = 0; |
| 1070 | for (int i = 0; i < NELEM(gClasses); i++) { |
| 1071 | ClassRegistrationInfo* cri = &gClasses[i]; |
| 1072 | result = AndroidRuntime::registerNativeMethods(env, |
| 1073 | cri->classPath, cri->methods, cri->methodCount); |
| 1074 | if (result < 0) { |
| 1075 | LOGE("Failed to register %s: %d", cri->classPath, result); |
| 1076 | break; |
| 1077 | } |
| 1078 | } |
| 1079 | return result; |
| 1080 | } |
| 1081 | |
| 1082 | } // namespace android |
| 1083 | |