Question

我想在Android的native-c应用程序中使用VAO。

问题是，支持GL_OES_vertex_array_object，我甚至可以获得glBindVertexArrayOES和glDeleteVertexArraysOES的地址，但找不到glGenVertexArraysOES。

GL_OES_vertex_array_object的存在是否意味着可以访问所有这些功能？

我的VAO初始化代码：

std::string vao = "GL_OES_vertex_array_object";

if ( isExtensionSupported ( vao.c_str () ) != 0 )
{
    LOG ( vao << " supported" );
    glBindVertexArrayOES = (PFNGLBINDVERTEXARRAYOESPROC)eglGetProcAddress ( "glBindVertexArrayOES" );
    if ( !glBindVertexArrayOES )
        LOG ( "Can't get proc address: glBindVertexArrayOES" );

    glDeleteVertexArraysOES = (PFNGLDELETEVERTEXARRAYSOESPROC)eglGetProcAddress ( "glDeleteVertexArraysOES" );
    if ( !glDeleteVertexArraysOES )
        LOG ( "Can't get proc address: glDeleteVertexArraysOES" );

    glGenVertexArraysOES = (PFNGLGENVERTEXARRAYSOESPROC)eglGetProcAddress ( "glGenVertexArraysOES" );
    if ( glGenVertexArraysOES )
        LOG ( "Can't get proc address: glGenVertexArraysOES" );
}
else
{
    LOG ( vao << " not supported" );
}

当然我收到了日志消息

Can't get proc address: glGenVertexArraysOES

我的Android.mk（缩短了一点）：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE    := smart
LOCAL_SRC_FILES := Base/Node.cpp
...

LOCAL_LDLIBS    := -llog -landroid -lGLESv2 -lEGL
LOCAL_STATIC_LIBRARIES := nv_and_util

include $(BUILD_SHARED_LIBRARY)

$(call import-add-path, C:/NVPACK/TDK_Samples/tegra_android_native_samples_v10p00/libs/jni)
$(call import-module,nv_and_util)

设备型号三星i9003与Android 2.3.5

Answer 1

如果这真的是你的代码，那么错误是你错过了'！'。比较：

if ( !glDeleteVertexArraysOES )

到

if ( glGenVertexArraysOES )

Answer 2

我刚试过这个......

替换：

 int main(int argc, char * argv[])

有了这个：

#include <GLES2/gl2ext.h>

在包含gl2ext.h之前，必须定义宏GL_GLEXT_PROTOTYPES。没有必要明确定义函数。

没找到android-ndk，glGenVertexArraysOES

2 个答案: