本文介绍了纹理映射和光照顶点着色器错误Java OpenGL的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我试图将纹理映射到3D立方体，并尝试编写着色器，使其具有照明和纹理.
I am trying to map texture to a 3D cube and trying to write shaders so that it has lighting and texture.
我尝试仅编写纹理着色器，并且可以正常工作.我还尝试了仅将3D值设置为红色的照明着色器，并且该照明着色器也可以使用.但是，当我尝试将两者结合时，我遇到了问题.我在下面提供了我的代码，但出现了错误
I have tried writing texture shader only and it works.I have also tried lighting shader only with 3D values set to red color, and that light shader works too. But when i try to combine that two, I am having problem.I have provided my code below, but i am getting error that
未编译附加的顶点着色器.无法链接着色器.
顶点着色器
#version 330 core
layout(location = 0) in vec4 vPosition;
layout(location = 1) in vec3 vNormal;
layout(location = 2) in vec2 VTexCoord;
out vec4 color;
out vec2 texCoord;
uniform mat4 ModelView;
uniform mat4 NormalTransform;
uniform mat4 Projection;
uniform vec4 LightPosition;
uniform vec4 AmbientProduct, DiffuseProduct, SpecularProduct;
uniform float Shininess;
void main()
{
// Transform vertex position into eye coordinates
vec3 ecPosition = (ModelView * vPosition).xyz;
// Here light position is defined in eye coordinates
vec3 L = normalize( LightPosition.xyz - ecPosition );
vec3 E = normalize( -ecPosition );
vec3 H = normalize( L + E );
// Transform vertex normal into eye coordinates
vec3 N = normalize((NormalTransform *vec4(vNormal,0)).xyz);
// Compute terms in the illumination equation
vec4 ambient = AmbientProduct;
float Kd = max( dot(L, N), 0.0 );
vec4 diffuse = Kd*DiffuseProduct;
float Ks = pow( max(dot(N, H), 0.0), Shininess );
vec4 specular = Ks * SpecularProduct;
if( dot(L, N) < 0.0 ) {
specular = vec4(0.0, 0.0, 0.0, 1.0);
}
gl_Position = Projection * ModelView * vPosition;
texCoord = vTexCoord;
color = ambient + diffuse + specular;
color.a = 1.0;
}
片段着色器
#version 330 core
in vec4 color;
in vec2 texCoord;
out vec4 fColor;
uniform sampler2D tex;
void main()
{
// fColor = texture( tex, texCoord );
vec4 t = texture( tex, texCoord );
fColor = 0.1*color + 0.9* t;
// fColor = color*(1-t) + vec4(0.8,0.5,0.3,1)* t;
}
编译链接
int vShader = gl.glCreateShader(GL_VERTEX_SHADER);
int fShader = gl.glCreateShader(GL_FRAGMENT_SHADER);
gl.glShaderSource(vShader, 1, vSource, null);
gl.glShaderSource(fShader, 1, fSource, null);
gl.glCompileShader(vShader);
gl.glCompileShader(fShader);
program = gl.glCreateProgram();
gl.glAttachShader(program, fShader);
gl.glAttachShader(program, vShader);
gl.glLinkProgram(program);
我尝试获取日志文件.
I have tried to get log file.
我不确定，但是问题可能是由日志文件中的异常引起的.
I am not certain but the problem may be caused by that exception from log file.
Internal exceptions (10 events):
Event: 0.035 Thread 0x0000000002950800 Exception <a 'java/lang/NoSuchMethodError': Method sun.misc.Unsafe.defineClass(Ljava/lang/String;[BII)Ljava/lang/Class; name or signature does not match> (0x000000076b78cf50) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u66\5298\hotspot\srv„;…їЎ?
Event: 0.035 Thread 0x0000000002950800 Exception <a 'java/lang/NoSuchMethodError': Method sun.misc.Unsafe.prefetchRead(Ljava/lang/Object;J)V name or signature does not match> (0x000000076b78d238) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u66\5298\hotspot\src\share\vm\prims\j‘ћ·¬QЉё?
Event: 0.096 Thread 0x0000000002950800 Exception <a 'java/security/PrivilegedActionException'> (0x000000076b82b230) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u66\5298\hotspot\src\share\vm\prims\jvm.cpp, line 1386]
Event: 0.096 Thread 0x0000000002950800 Exception <a 'java/security/PrivilegedActionException'> (0x000000076b82b440) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u66\5298\hotspot\src\share\vm\prims\jvm.cpp, line 1386]
Event: 0.096 Thread 0x0000000002950800 Exception <a 'java/security/PrivilegedActionException'> (0x000000076b82efe8) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u66\5298\hotspot\src\share\vm\prims\jvm.cpp, line 1386]
Event: 0.096 Thread 0x0000000002950800 Exception <a 'java/security/PrivilegedActionException'> (0x000000076b82f1f8) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u66\5298\hotspot\src\share\vm\prims\jvm.cpp, line 1386]
Event: 0.103 Thread 0x0000000002950800 Exception <a 'java/io/FileNotFoundException'> (0x000000076b833d80) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u66\5298\hotspot\src\share\vm\prims\jni.cpp, line 709]
Event: 0.140 Thread 0x0000000002950800 Exception <a 'java/lang/NoSuchFieldError': method resolution failed> (0x000000076bb8bcd8) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u66\5298\hotspot\src\share\vm\prims\methodHandles.cpp, line 1146]
Event: 0.141 Thread 0x0000000002950800 Exception <a 'java/lang/NoSuchFieldError': method resolution failed> (0x000000076bb990a8) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u66\5298\hotspot\src\share\vm\prims\methodHandles.cpp, line 1146]
Event: 0.175 Thread 0x0000000002950800 Exception <a 'java/io/FileNotFoundException'> (0x000000076bc2dc50) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u66\5298\hotspot\src\share\vm\prims\jni.cpp, line 709]
日志堆栈框架:
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j jogamp.opengl.gl4.GL4bcImpl.dispatch_glGetShaderInfoLog1(IILjava/lang/Object;IZLjava/lang/Object;IZJ)V+0
j jogamp.opengl.gl4.GL4bcImpl.glGetShaderInfoLog(IILjava/nio/IntBuffer;Ljava/nio/ByteBuffer;)V+123
j Basic.ShaderProg.loadShaders(Lcom/jogamp/opengl/GL3;)V+157
j Basic.ShaderProg.<init>(Lcom/jogamp/opengl/GL3;Ljava/lang/String;Ljava/lang/String;)V+16
j VCCW04$Renderer.init(Lcom/jogamp/opengl/GLAutoDrawable;)V+358
j jogamp.opengl.GLDrawableHelper.init(Lcom/jogamp/opengl/GLEventListener;Lcom/jogamp/opengl/GLAutoDrawable;Z)V+2
j jogamp.opengl.GLDrawableHelper.init(Lcom/jogamp/opengl/GLAutoDrawable;Z)V+81
j jogamp.opengl.GLAutoDrawableBase$1.run()V+26
j jogamp.opengl.GLDrawableHelper.invokeGLImpl(Lcom/jogamp/opengl/GLDrawable;Lcom/jogamp/opengl/GLContext;Ljava/lang/Runnable;Ljava/lang/Runnable;)V+197
j jogamp.opengl.GLDrawableHelper.invokeGL(Lcom/jogamp/opengl/GLDrawable;Lcom/jogamp/opengl/GLContext;Ljava/lang/Runnable;Ljava/lang/Runnable;)V+72
j com.jogamp.newt.opengl.GLWindow.display()V+90
j jogamp.opengl.GLAutoDrawableBase.defaultWindowResizedOp(II)V+206
j com.jogamp.newt.opengl.GLWindow.access$200(Lcom/jogamp/newt/opengl/GLWindow;II)V+3
j com.jogamp.newt.opengl.GLWindow$2.windowResized(Lcom/jogamp/newt/event/WindowEvent;)V+18
j jogamp.newt.WindowImpl.consumeWindowEvent(Lcom/jogamp/newt/event/WindowEvent;)V+234
j jogamp.newt.WindowImpl.sendWindowEvent(I)V+14
j jogamp.newt.WindowImpl.setVisibleActionImpl(Z)V+691
j jogamp.newt.WindowImpl$VisibleAction.run()V+8
j com.jogamp.common.util.RunnableTask.run()V+198
j jogamp.newt.DefaultEDTUtil$NEDT.run()V+221
v ~StubRoutines::call_stub
推荐答案
正如我早先发布的那样，在使用is之前，我们必须检查着色器编译链接状态.
As I have post early we must check shader compilation linkage state before using is.
我以这种方式(OpenGL-ES 2.0):
I do this in that way (OpenGL-ES 2.0):
m_nVertexShader = glCreateShader(GL_VERTEX_SHADER);
m_nPixelShader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(m_nVertexShader, 1, &lpszVertexBuffer, NULL);
glShaderSource(m_nPixelShader, 1, &lpszFragmentBuffer, NULL);
glCompileShader(m_nVertexShader);
int iIsOk = 0;
glGetShaderiv(m_nVertexShader, GL_COMPILE_STATUS, &iIsOk);
if(!iIsOk)
{
GLint infoLen = 0;
glGetShaderiv(m_nVertexShader, GL_INFO_LOG_LENGTH, &infoLen);
if(infoLen > 1)
{
char* infoLog = (char*)malloc(sizeof(char) * infoLen);
glGetShaderInfoLog(m_nVertexShader, infoLen, NULL, infoLog);
QMessageBox::warning(this, QString("Error"),
QString(infoLog), QMessageBox::Yes | QMessageBox::Cancel, QMessageBox::Yes);
free(infoLog);
}
glDeleteShader(m_nVertexShader);
return;
}
glCompileShader(m_nPixelShader);
glGetShaderiv(m_nPixelShader, GL_COMPILE_STATUS, &iIsOk);
if(!iIsOk)
{
GLint infoLen = 0;
glGetShaderiv(m_nPixelShader, GL_INFO_LOG_LENGTH, &infoLen);
if(infoLen > 1)
{
char* infoLog = (char*)malloc(sizeof(char) * infoLen);
glGetShaderInfoLog(m_nPixelShader, infoLen, NULL, infoLog);
QMessageBox::warning(this, QString("Error"),
QString(infoLog), QMessageBox::Yes | QMessageBox::Cancel, QMessageBox::Yes);
free(infoLog);
}
glDeleteShader(m_nPixelShader);
return;
}
m_nProgram = glCreateProgram();
glAttachShader(m_nProgram, m_nVertexShader);
glAttachShader(m_nProgram, m_nPixelShader);
glBindAttribLocation(m_nProgram, 0, "rm_Vertex");
glLinkProgram(m_nProgram);
glGetProgramiv(m_nProgram, GL_LINK_STATUS, &iIsOk);
// Fail to pass status validation
if(!iIsOk)
{
GLint infoLen = 0;
glGetProgramiv(m_nProgram, GL_INFO_LOG_LENGTH, &infoLen);
if(infoLen > 1)
{
char* infoLog = (char*)malloc(sizeof(char) * infoLen);
glGetProgramInfoLog(m_nProgram, infoLen, NULL, infoLog);
QMessageBox::warning(this, QString("Error"),
QString(infoLog), QMessageBox::Yes | QMessageBox::Cancel, QMessageBox::Yes);
free(infoLog);
}
glDeleteProgram(m_nProgram);
return;
}
glUseProgram(m_nProgram);
您还可以使用信息量更高的字符串来修饰消息框的显示呼叫，例如:
You can also spesify message box show calls in more informative way strings like:
QMessageBox::warning(this, QString("Vertex shader compilation error."),
QString(infoLog), QMessageBox::Yes | QMessageBox::Cancel, QMessageBox::Yes);
QMessageBox::warning(this, QString("Fragment shader compilation error."),
QString(infoLog), QMessageBox::Yes | QMessageBox::Cancel, QMessageBox::Yes);
QMessageBox::warning(this, QString("Shader linkage error."),
QString(infoLog), QMessageBox::Yes | QMessageBox::Cancel, QMessageBox::Yes);
通过这种方式，我们可以极大地减少错误搜索的范围.
In that way we can significaly redure the area of bug searching.
我突然发现了一些有关该错误的信息，如下所示: JOGL2 + GLCapabilities + Windows .我认为这只是Windows问题.尝试在Linux OS上构建您的应用程序.
I sudernly find some info about the bug wich looks like this JOGL2 + GLCapabilities + Windows. I think it is only the Windows issue. Try to build your application on Linux OS.
首先，必须为链接之前指定rendertarget输出.
And first of all you must specify rendertarget output for before linkage.
glBindFragDataLocation(program, 0, "fColor");
这篇关于纹理映射和光照顶点着色器错误Java OpenGL的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！