NDK OpenGL 未定义对 glVertexPointer 的引用
在终端中使用 ndk-build 编译以下 C 代码时(我正在运行 Ubuntu):
#include <jni.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
#include "org_opengldrawinjni_DrawinJNI.h"
JNIEXPORT void JNICALL Java_org_opengldrawinjni_DrawinJNI_Draw
(JNIEnv *envptr, jobject jobj)
{
GLfloat vertices[] =
{ 1.0, 0.0, 0.0,
1.0, 1.0, 0.0,
0.0, 0.0, 0.0
};
GLubyte indices[] = { 0, 1, 2 };
glVertexPointer(3, GL_FLOAT, 0, vertices);
glDrawElements(GL_TRIANGLES, 3, GL_UNSIGNED_BYTE, indices);
}
使用此 Android.mk 文件:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := OpenGLJNI
LOCAL_SRC_FILES := org_opengldrawinjni_DrawinJNI.c
LOCAL_LDLIBS := -llog -lGLESv1_CM.so
include $(BUILD_SHARED_LIBRARY)
我收到错误,未定义对 glVertexPointer 的引用。我想知道为什么,因为我相信我正确地包含了标头并链接了 Android.mk 中的库,
/home/thomas/Documents/LinuxProgramming/EclipseWorkspace/OpenGLDrawinginJNI/obj/local/armeabi/objs/OpenGLJNI/org_opengldrawinjni_DrawinJNI.o: In function `Java_org_opengldrawinjni_DrawinJNI_Draw':
/home/thomas/Documents/LinuxProgramming/EclipseWorkspace/OpenGLDrawinginJNI/jni/org_opengldrawinjni_DrawinJNI.c:33: undefined reference to `glVertexPointer'
collect2: ld returned 1 exit status
make: *** [/home/thomas/Documents/LinuxProgramming/EclipseWorkspace/OpenGLDrawinginJNI/obj/local/armeabi/libOpenGLJNI.so] Error 1
谢谢!
When compiling the following C code with ndk-build in Terminal (I'm running Ubuntu):
#include <jni.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
#include "org_opengldrawinjni_DrawinJNI.h"
JNIEXPORT void JNICALL Java_org_opengldrawinjni_DrawinJNI_Draw
(JNIEnv *envptr, jobject jobj)
{
GLfloat vertices[] =
{ 1.0, 0.0, 0.0,
1.0, 1.0, 0.0,
0.0, 0.0, 0.0
};
GLubyte indices[] = { 0, 1, 2 };
glVertexPointer(3, GL_FLOAT, 0, vertices);
glDrawElements(GL_TRIANGLES, 3, GL_UNSIGNED_BYTE, indices);
}
with this Android.mk file:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := OpenGLJNI
LOCAL_SRC_FILES := org_opengldrawinjni_DrawinJNI.c
LOCAL_LDLIBS := -llog -lGLESv1_CM.so
include $(BUILD_SHARED_LIBRARY)
I get an error, undefined reference to glVertexPointer. I'm wondering why because I believe I properly included the headers and linked up the libraries in the Android.mk
/home/thomas/Documents/LinuxProgramming/EclipseWorkspace/OpenGLDrawinginJNI/obj/local/armeabi/objs/OpenGLJNI/org_opengldrawinjni_DrawinJNI.o: In function `Java_org_opengldrawinjni_DrawinJNI_Draw':
/home/thomas/Documents/LinuxProgramming/EclipseWorkspace/OpenGLDrawinginJNI/jni/org_opengldrawinjni_DrawinJNI.c:33: undefined reference to `glVertexPointer'
collect2: ld returned 1 exit status
make: *** [/home/thomas/Documents/LinuxProgramming/EclipseWorkspace/OpenGLDrawinginJNI/obj/local/armeabi/libOpenGLJNI.so] Error 1
Thanks!
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我想不出有什么问题,但是当我检查我的 make 文件时,发现有一个区别。
由于我不擅长编译器,我不知道它是否相关:
LOCAL_LDLIBS := -lGLESv1_CM -ldl -llog
希望有帮助
I can't think of anything wrong but when I checked my make file there is one difference.
Since I'm not good with compilers I don't know if it is relevant:
LOCAL_LDLIBS := -lGLESv1_CM -ldl -llog
Hope it helps