GLES11cHeader.cpp revision 66089a33ea4efda711a3a5180f0b001bdac48dcf 
1**
2** Copyright 2009, 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 <android_runtime/AndroidRuntime.h>
20#include <utils/misc.h>
21
22#include <assert.h>
23#include <GLES/gl.h>
24#include <GLES/glext.h>
25
26/* special calls implemented in Android's GLES wrapper used to more
27 * efficiently bound-check passed arrays */
28extern "C" {
29GL_API void GL_APIENTRY glPointSizePointerOESBounds(GLenum type, GLsizei stride,
30        const GLvoid *ptr, GLsizei count);
31}
32
33static int initialized = 0;
34
35static jclass nioAccessClass;
36static jclass bufferClass;
37static jclass OOMEClass;
38static jclass UOEClass;
39static jclass IAEClass;
40static jclass AIOOBEClass;
41static jmethodID getBasePointerID;
42static jmethodID getBaseArrayID;
43static jmethodID getBaseArrayOffsetID;
44static jfieldID positionID;
45static jfieldID limitID;
46static jfieldID elementSizeShiftID;
47
48/* Cache method IDs each time the class is loaded. */
49
50static void
51nativeClassInitBuffer(JNIEnv *_env)
52{
53    jclass nioAccessClassLocal = _env->FindClass("java/nio/NIOAccess");
54    nioAccessClass = (jclass) _env->NewGlobalRef(nioAccessClassLocal);
55
56    jclass bufferClassLocal = _env->FindClass("java/nio/Buffer");
57    bufferClass = (jclass) _env->NewGlobalRef(bufferClassLocal);
58
59    getBasePointerID = _env->GetStaticMethodID(nioAccessClass,
60            "getBasePointer", "(Ljava/nio/Buffer;)J");
61    getBaseArrayID = _env->GetStaticMethodID(nioAccessClass,
62            "getBaseArray", "(Ljava/nio/Buffer;)Ljava/lang/Object;");
63    getBaseArrayOffsetID = _env->GetStaticMethodID(nioAccessClass,
64            "getBaseArrayOffset", "(Ljava/nio/Buffer;)I");
65
66    positionID = _env->GetFieldID(bufferClass, "position", "I");
67    limitID = _env->GetFieldID(bufferClass, "limit", "I");
68    elementSizeShiftID =
69        _env->GetFieldID(bufferClass, "_elementSizeShift", "I");
70}
71
72
73static void
74nativeClassInit(JNIEnv *_env, jclass glImplClass)
75{
76    nativeClassInitBuffer(_env);
77
78    jclass IAEClassLocal =
79        _env->FindClass("java/lang/IllegalArgumentException");
80    jclass OOMEClassLocal =
81         _env->FindClass("java/lang/OutOfMemoryError");
82    jclass UOEClassLocal =
83         _env->FindClass("java/lang/UnsupportedOperationException");
84    jclass AIOOBEClassLocal =
85         _env->FindClass("java/lang/ArrayIndexOutOfBoundsException");
86
87    IAEClass = (jclass) _env->NewGlobalRef(IAEClassLocal);
88    OOMEClass = (jclass) _env->NewGlobalRef(OOMEClassLocal);
89    UOEClass = (jclass) _env->NewGlobalRef(UOEClassLocal);
90    AIOOBEClass = (jclass) _env->NewGlobalRef(AIOOBEClassLocal);
91}
92
93static void *
94getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining)
95{
96    jint position;
97    jint limit;
98    jint elementSizeShift;
99    jlong pointer;
100    jint offset;
101    void *data;
102
103    position = _env->GetIntField(buffer, positionID);
104    limit = _env->GetIntField(buffer, limitID);
105    elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID);
106    *remaining = (limit - position) << elementSizeShift;
107    pointer = _env->CallStaticLongMethod(nioAccessClass,
108            getBasePointerID, buffer);
109    if (pointer != 0L) {
110        *array = NULL;
111        return (void *) (jint) pointer;
112    }
113
114    *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass,
115            getBaseArrayID, buffer);
116    offset = _env->CallStaticIntMethod(nioAccessClass,
117            getBaseArrayOffsetID, buffer);
118    data = _env->GetPrimitiveArrayCritical(*array, (jboolean *) 0);
119
120    return (void *) ((char *) data + offset);
121}
122
123
124static void
125releasePointer(JNIEnv *_env, jarray array, void *data, jboolean commit)
126{
127    _env->ReleasePrimitiveArrayCritical(array, data,
128					   commit ? 0 : JNI_ABORT);
129}
130
131static void *
132getDirectBufferPointer(JNIEnv *_env, jobject buffer) {
133    char* buf = (char*) _env->GetDirectBufferAddress(buffer);
134    if (buf) {
135        jint position = _env->GetIntField(buffer, positionID);
136        jint elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID);
137        buf += position << elementSizeShift;
138    } else {
139        _env->ThrowNew(IAEClass, "Must use a native order direct Buffer");
140    }
141    return (void*) buf;
142}
143
144// --------------------------------------------------------------------------
145
146