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