/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
#include "RendererJNI.h"
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <GLES3/gl3.h>
#include <android/asset_manager_jni.h>
#include <android/log.h>
#define LOG_TAG "ndk-build"
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__)
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__)
GLint g_programObject;
jint g_width;
jint g_height;
AAssetManager* g_pAssetManager = NULL;
char* readShaderSrcFile(char *shaderFile, AAssetManager *pAssetManager)
{
AAsset *pAsset = NULL;
char *pBuffer = NULL;
off_t size = -1;
int numByte = -1;
if (NULL == pAssetManager)
{
LOGE("pAssetManager is null!");
return NULL;
}
pAsset = AAssetManager_open(pAssetManager, shaderFile, AASSET_MODE_UNKNOWN);
//LOGI("after AAssetManager_open");
size = AAsset_getLength(pAsset);
LOGI("after AAssetManager_open");
pBuffer = (char *)malloc(size+1);
pBuffer[size] = '\0';
numByte = AAsset_read(pAsset, pBuffer, size);
LOGI("%s : [%s]", shaderFile, pBuffer);
AAsset_close(pAsset);
return pBuffer;
}
GLuint LoadShader ( GLenum type, const char *shaderSrc )
{
GLuint shader;
GLint compiled;
// Create the shader object
shader = glCreateShader ( type );
if ( shader == 0 )
{
return 0;
}
// Load the shader source
glShaderSource ( shader, 1, &shaderSrc, NULL );
// Compile the shader
glCompileShader ( shader );
// Check the compile status
glGetShaderiv ( shader, GL_COMPILE_STATUS, &compiled );
if ( !compiled )
{
GLint infoLen = 0;
glGetShaderiv ( shader, GL_INFO_LOG_LENGTH, &infoLen );
if ( infoLen > 1 )
{
char *infoLog = (char *)malloc ( sizeof ( char ) * infoLen );
glGetShaderInfoLog ( shader, infoLen, NULL, infoLog );
LOGE("Error compiling shader:[%s]", infoLog );
free ( infoLog );
}
glDeleteShader ( shader );
return 0;
}
return shader;
}
//*********************************************************************************
JNIEXPORT void JNICALL Java_opengl_panjq_com_opengl_1demo_RendererJNI_glesInit
(JNIEnv *pEnv, jobject obj){
char vShaderStr[] =
"#version 300 es \n"
"layout(location = 0) in vec4 vPosition; \n"
"void main() \n"
"{ \n"
" gl_Position = vPosition; \n"
"} \n";
char fShaderStr[] =
"#version 300 es \n"
"precision mediump float; \n"
"out vec4 fragColor; \n"
"void main() \n"
"{ \n"
" fragColor = vec4 ( 1.0, 0.0, 0.0, 1.0 ); \n"
"} \n";
char *pVertexShader = readShaderSrcFile("shader/vs.glsl", g_pAssetManager);
char *pFragmentShader = readShaderSrcFile("shader/fs.glsl", g_pAssetManager);
GLuint vertexShader;
GLuint fragmentShader;
GLuint programObject;
GLint linked;
// Load the vertex/fragment shaders
//vertexShader = LoadShader ( GL_VERTEX_SHADER, vShaderStr );
//fragmentShader = LoadShader ( GL_FRAGMENT_SHADER, fShaderStr );
vertexShader = LoadShader ( GL_VERTEX_SHADER, pVertexShader );
fragmentShader = LoadShader ( GL_FRAGMENT_SHADER, pFragmentShader );
// Create the program object
programObject = glCreateProgram ( );
if ( programObject == 0 )
{
return;
}
glAttachShader ( programObject, vertexShader );
glAttachShader ( programObject, fragmentShader );
// Link the program
glLinkProgram ( programObject );
// Check the link status
glGetProgramiv ( programObject, GL_LINK_STATUS, &linked );
if ( !linked )
{
GLint infoLen = 0;
glGetProgramiv ( programObject, GL_INFO_LOG_LENGTH, &infoLen );
if ( infoLen > 1 )
{
char *infoLog = (char *)malloc ( sizeof ( char ) * infoLen );
glGetProgramInfoLog ( programObject, infoLen, NULL, infoLog );
LOGE("Error linking program:[%s]", infoLog );
free ( infoLog );
}
glDeleteProgram ( programObject );
return;
}
// Store the program object
g_programObject = programObject;
glClearColor ( 1.0f, 1.0f, 1.0f, 0.0f );
}
/*
* Class: opengl_panjq_com_opengl_demo_RendererJNI
* Method: glesRender
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_opengl_panjq_com_opengl_1demo_RendererJNI_glesRender
(JNIEnv *pEnv, jobject obj){
GLfloat vVertices[] = { 0.0f, 0.5f, 0.0f,
-0.5f, -0.5f, 0.0f,
0.5f, -0.5f, 0.0f
};
// Set the viewport
glViewport ( 0, 0, g_width, g_height );
// Clear the color buffer
glClear ( GL_COLOR_BUFFER_BIT );
// Use the program object
glUseProgram ( g_programObject );
// Load the vertex data
glVertexAttribPointer ( 0, 3, GL_FLOAT, GL_FALSE, 0, vVertices );
glEnableVertexAttribArray ( 0 );
glDrawArrays ( GL_TRIANGLES, 0, 3 );
}
/*
* Class: opengl_panjq_com_opengl_demo_RendererJNI
* Method: glesResize
* Signature: (II)V
*/
JNIEXPORT void JNICALL Java_opengl_panjq_com_opengl_1demo_RendererJNI_glesResize
(JNIEnv *pEnv, jobject obj, jint width, jint height){
g_width = width;
g_height = height;
}
JNIEXPORT void JNICALL Java_opengl_panjq_com_opengl_1demo_RendererJNI_readShaderFile
(JNIEnv *env, jobject self, jobject assetManager){
if (assetManager && env)
{
//LOGI("before AAssetManager_fromJava");
g_pAssetManager = AAssetManager_fromJava(env, assetManager);
//LOGI("after AAssetManager_fromJava");
if (NULL == g_pAssetManager)
{
LOGE("AAssetManager_fromJava() return null !");
}
}
else
{
LOGE("assetManager is null !");
}
}
