1 ** 2 ** Copyright 2006, The Android Open Source Project 3 ** 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 7 ** 8 ** http://www.apache.org/licenses/LICENSE-2.0 9 ** 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 14 ** limitations under the License. 15 */ 16 17 // This source file is automatically generated 18 19 #pragma GCC diagnostic ignored "-Wunused-variable" 20 #pragma GCC diagnostic ignored "-Wunused-but-set-variable" 21 #pragma GCC diagnostic ignored "-Wunused-function" 22 23 #include "jni.h" 24 #include "JNIHelp.h" 25 #include <android_runtime/AndroidRuntime.h> 26 #include <utils/misc.h> 27 28 #include <assert.h> 29 #include <GLES/gl.h> 30 #include <GLES/glext.h> 31 32 // Work around differences between the generated name and the actual name. 33 34 #define glBlendEquation glBlendEquationOES 35 #define glBlendEquationSeparate glBlendEquationSeparateOES 36 #define glBlendFuncSeparate glBlendFuncSeparateOES 37 #define glGetTexGenfv glGetTexGenfvOES 38 #define glGetTexGeniv glGetTexGenivOES 39 #define glGetTexGenxv glGetTexGenxvOES 40 #define glTexGenf glTexGenfOES 41 #define glTexGenfv glTexGenfvOES 42 #define glTexGeni glTexGeniOES 43 #define glTexGeniv glTexGenivOES 44 #define glTexGenx glTexGenxOES 45 #define glTexGenxv glTexGenxvOES 46 47 48 49 /* special calls implemented in Android's GLES wrapper used to more 50 * efficiently bound-check passed arrays */ 51 extern "C" { 52 GL_API void GL_APIENTRY glColorPointerBounds(GLint size, GLenum type, GLsizei stride, 53 const GLvoid *ptr, GLsizei count); 54 GL_API void GL_APIENTRY glNormalPointerBounds(GLenum type, GLsizei stride, 55 const GLvoid *pointer, GLsizei count); 56 GL_API void GL_APIENTRY glTexCoordPointerBounds(GLint size, GLenum type, 57 GLsizei stride, const GLvoid *pointer, GLsizei count); 58 GL_API void GL_APIENTRY glVertexPointerBounds(GLint size, GLenum type, 59 GLsizei stride, const GLvoid *pointer, GLsizei count); 60 GL_API void GL_APIENTRY glPointSizePointerOESBounds(GLenum type, 61 GLsizei stride, const GLvoid *pointer, GLsizei count); 62 GL_API void GL_APIENTRY glMatrixIndexPointerOESBounds(GLint size, GLenum type, 63 GLsizei stride, const GLvoid *pointer, GLsizei count); 64 GL_API void GL_APIENTRY glWeightPointerOESBounds(GLint size, GLenum type, 65 GLsizei stride, const GLvoid *pointer, GLsizei count); 66 } 67 68 static int initialized = 0; 69 70 static jclass nioAccessClass; 71 static jclass bufferClass; 72 static jclass G11ImplClass; 73 static jmethodID getBasePointerID; 74 static jmethodID getBaseArrayID; 75 static jmethodID getBaseArrayOffsetID; 76 static jmethodID allowIndirectBuffersID; 77 static jfieldID positionID; 78 static jfieldID limitID; 79 static jfieldID elementSizeShiftID; 80 static jfieldID haveCheckedExtensionsID; 81 static jfieldID have_OES_blend_equation_separateID; 82 static jfieldID have_OES_blend_subtractID; 83 static jfieldID have_OES_framebuffer_objectID; 84 static jfieldID have_OES_texture_cube_mapID; 85 86 /* Cache method IDs each time the class is loaded. */ 87 88 static void 89 nativeClassInit(JNIEnv *_env, jclass glImplClass) 90 { 91 jclass nioAccessClassLocal = _env->FindClass("java/nio/NIOAccess"); 92 nioAccessClass = (jclass) _env->NewGlobalRef(nioAccessClassLocal); 93 94 jclass bufferClassLocal = _env->FindClass("java/nio/Buffer"); 95 bufferClass = (jclass) _env->NewGlobalRef(bufferClassLocal); 96 97 jclass g11impClassLocal = _env->FindClass("com/google/android/gles_jni/GLImpl"); 98 G11ImplClass = (jclass) _env->NewGlobalRef(g11impClassLocal); 99 haveCheckedExtensionsID = _env->GetFieldID(G11ImplClass, "haveCheckedExtensions", "Z"); 100 have_OES_blend_equation_separateID = _env->GetFieldID(G11ImplClass, "have_OES_blend_equation_separate", "Z"); 101 have_OES_blend_subtractID = _env->GetFieldID(G11ImplClass, "have_OES_blend_subtract", "Z"); 102 have_OES_framebuffer_objectID = _env->GetFieldID(G11ImplClass, "have_OES_framebuffer_object", "Z"); 103 have_OES_texture_cube_mapID = _env->GetFieldID(G11ImplClass, "have_OES_texture_cube_map", "Z"); 104 105 getBasePointerID = _env->GetStaticMethodID(nioAccessClass, 106 "getBasePointer", "(Ljava/nio/Buffer;)J"); 107 getBaseArrayID = _env->GetStaticMethodID(nioAccessClass, 108 "getBaseArray", "(Ljava/nio/Buffer;)Ljava/lang/Object;"); 109 getBaseArrayOffsetID = _env->GetStaticMethodID(nioAccessClass, 110 "getBaseArrayOffset", "(Ljava/nio/Buffer;)I"); 111 allowIndirectBuffersID = _env->GetStaticMethodID(g11impClassLocal, 112 "allowIndirectBuffers", "(Ljava/lang/String;)Z"); 113 positionID = _env->GetFieldID(bufferClass, "position", "I"); 114 limitID = _env->GetFieldID(bufferClass, "limit", "I"); 115 elementSizeShiftID = 116 _env->GetFieldID(bufferClass, "_elementSizeShift", "I"); 117 } 118 119 static void * 120 getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining, jint *offset) 121 { 122 jint position; 123 jint limit; 124 jint elementSizeShift; 125 jlong pointer; 126 127 position = _env->GetIntField(buffer, positionID); 128 limit = _env->GetIntField(buffer, limitID); 129 elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID); 130 *remaining = (limit - position) << elementSizeShift; 131 pointer = _env->CallStaticLongMethod(nioAccessClass, 132 getBasePointerID, buffer); 133 if (pointer != 0L) { 134 *array = NULL; 135 return reinterpret_cast<void *>(pointer); 136 } 137 138 *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass, 139 getBaseArrayID, buffer); 140 if (*array == NULL) { 141 return (void*) NULL; 142 } 143 *offset = _env->CallStaticIntMethod(nioAccessClass, 144 getBaseArrayOffsetID, buffer); 145 146 return NULL; 147 } 148 149 static void 150 releasePointer(JNIEnv *_env, jarray array, void *data, jboolean commit) 151 { 152 _env->ReleasePrimitiveArrayCritical(array, data, 153 commit ? 0 : JNI_ABORT); 154 } 155 156 extern "C" { 157 extern char* __progname; 158 } 159 160 static bool 161 allowIndirectBuffers(JNIEnv *_env) { 162 static jint sIndirectBufferCompatability; 163 if (sIndirectBufferCompatability == 0) { 164 jobject appName = _env->NewStringUTF(::__progname); 165 sIndirectBufferCompatability = _env->CallStaticBooleanMethod(G11ImplClass, allowIndirectBuffersID, appName) ? 2 : 1; 166 } 167 return sIndirectBufferCompatability == 2; 168 } 169 170 static void * 171 getDirectBufferPointer(JNIEnv *_env, jobject buffer) { 172 if (!buffer) { 173 return NULL; 174 } 175 void* buf = _env->GetDirectBufferAddress(buffer); 176 if (buf) { 177 jint position = _env->GetIntField(buffer, positionID); 178 jint elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID); 179 buf = ((char*) buf) + (position << elementSizeShift); 180 } else { 181 if (allowIndirectBuffers(_env)) { 182 jarray array = 0; 183 jint remaining; 184 jint offset; 185 buf = getPointer(_env, buffer, &array, &remaining, &offset); 186 if (array) { 187 releasePointer(_env, array, buf, 0); 188 } 189 buf = (char*)buf + offset; 190 } else { 191 jniThrowException(_env, "java/lang/IllegalArgumentException", 192 "Must use a native order direct Buffer"); 193 } 194 } 195 return buf; 196 } 197 198 static int 199 getNumCompressedTextureFormats() { 200 int numCompressedTextureFormats = 0; 201 glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &numCompressedTextureFormats); 202 return numCompressedTextureFormats; 203 } 204 205 // Check if the extension at the head of pExtensions is pExtension. Note that pExtensions is 206 // terminated by either 0 or space, while pExtension is terminated by 0. 207 208 static bool 209 extensionEqual(const GLubyte* pExtensions, const GLubyte* pExtension) { 210 while (true) { 211 char a = *pExtensions++; 212 char b = *pExtension++; 213 bool aEnd = a == '\0' || a == ' '; 214 bool bEnd = b == '\0'; 215 if ( aEnd || bEnd) { 216 return aEnd == bEnd; 217 } 218 if ( a != b ) { 219 return false; 220 } 221 } 222 } 223 224 static const GLubyte* 225 nextExtension(const GLubyte* pExtensions) { 226 while (true) { 227 char a = *pExtensions++; 228 if ( a == '\0') { 229 return pExtensions-1; 230 } else if ( a == ' ') { 231 return pExtensions; 232 } 233 } 234 } 235 236 static bool 237 checkForExtension(const GLubyte* pExtensions, const GLubyte* pExtension) { 238 for (;*pExtensions != '\0'; pExtensions = nextExtension(pExtensions)) { 239 if (extensionEqual(pExtensions, pExtension)) { 240 return true; 241 } 242 } 243 return false; 244 } 245 246 static bool 247 supportsExtension(JNIEnv *_env, jobject impl, jfieldID fieldId) { 248 if (!_env->GetBooleanField(impl, haveCheckedExtensionsID)) { 249 _env->SetBooleanField(impl, haveCheckedExtensionsID, true); 250 const GLubyte* sExtensions = glGetString(GL_EXTENSIONS); 251 _env->SetBooleanField(impl, have_OES_blend_equation_separateID, 252 checkForExtension(sExtensions, (const GLubyte*) "GL_OES_blend_equation_separate")); 253 _env->SetBooleanField(impl, have_OES_blend_subtractID, 254 checkForExtension(sExtensions, (const GLubyte*) "GL_OES_blend_subtract")); 255 _env->SetBooleanField(impl, have_OES_framebuffer_objectID, 256 checkForExtension(sExtensions, (const GLubyte*) "GL_OES_framebuffer_object")); 257 _env->SetBooleanField(impl, have_OES_texture_cube_mapID, 258 checkForExtension(sExtensions, (const GLubyte*) "GL_OES_texture_cube_map")); 259 } 260 return _env->GetBooleanField(impl, fieldId); 261 } 262 263 // -------------------------------------------------------------------------- 264
