纹理映射和照明顶点着色器ErrorJava OpenGL

Question

我想将纹理映射到3D立方体，并尝试着色着色器，使其具有照明和纹理。

我已经试过只写纹理着色器，它的工作原理。 我也尝试过使用3D值设置为红色的光照着色器，并且该着色器也起作用。但是，当我尝试将这两个结合起来时，我遇到了问题。 我已经提供了我的代码如下，但我得到的错误

附加的顶点着色器没有编译。着色器无法链接。

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; 
    } 

编译联动

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); 

我试图获取日志文件。

我不确定，但问题可能是由日志文件中的异常引起的。

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] 

日志栈帧：

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 

Answer 1

正如我早后，我们必须用的就是前检查着色器编译联动状态。

我以这种方式做到这一点（的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spesify消息框显示调用更多的信息方式的字符串，如：

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); 

这样，我们可以显着地纠正错误搜索的区域。

我简单地找到一些关于这个bug的信息，看起来像这样JOGL2 + GLCapabilities + Windows。我认为这只是Windows的问题。尝试在Linux操作系统上构建您的应用程序。

首先，您必须指定rendertarget输出用于连接之前。

glBindFragDataLocation(program, 0, "fColor");