问题描述
我的 linux 系统在编译顶点着色器时遇到问题。
首先，这是我遇到的错误
Vertex Shader compilation failed: 0:1(10): error: GLSL 4.30 is not supported. Supported versions are: 1.10,1.20,1.30,1.00 ES,3.00 ES,3.10 ES,and 3.20 ES
Vertex Shader compilation failed: 0:1(10): error: GLSL 4.30 is not supported. Supported versions are: 1.10,and 3.20 ES
Shader linking failed: error: linking with uncompiled/unspecialized shadererror: linking with uncompiled/unspecialized shader
这是顶点着色器
#version 430 core
layout (location = 0) in vec4 vPosition;
void main(){
gl_Position = vPosition;
gl_PointSize = 50.0;
}
这是片段着色器
#version 430 core
out vec4 fColor;
void main(){
fColor = vec4(1.0,0.0,1.0);
}
这是C代码
#include <GL/glew.h>
#include <GL/freeglut.h>
#include <stdio.h>
#include <stdlib.h>
GLuint vao;
GLuint vbo;
GLuint v,f;
GLfloat vertices[3][2] = { { -0.90,-0.90 },// Triangle 1
{ 0.90,{ -0.90,0.90 },};
char* ReadFile(const char* filename);
GLuint initShaders(char* v_shader,char* f_shader);
void init();
void display(void);
/************************************************/
char* ReadFile(const char* filename) {
FILE* infile;
#ifdef WIN32
fopen_s(&infile,filename,"rb");
#else
infile = fopen(filename,"rb");
#endif
if (!infile) {
printf("Unable to open file %s\n",filename);
return NULL;
}
fseek(infile,SEEK_END);
int len = ftell(infile);
fseek(infile,SEEK_SET);
char* source = (char*)malloc(len + 1);
fread(source,1,len,infile);
fclose(infile);
source[len] = 0;
return (source);
}
/*************************************************************/
GLuint initShaders(const char* v_shader,const char* f_shader) {
GLuint p = glCreateProgram();
v = glCreateShader(GL_VERTEX_SHADER);
f = glCreateShader(GL_FRAGMENT_SHADER);
const char * vs = ReadFile(v_shader);
const char * fs = ReadFile(f_shader);
glShaderSource(v,&vs,NULL);
glShaderSource(f,&fs,NULL);
free((char*)vs);
free((char*)fs);
glCompileShader(v);
GLint compiled;
glGetShaderiv(v,GL_COMPILE_STATUS,&compiled);
if (!compiled) {
GLsizei len;
glGetShaderiv(v,GL_INFO_LOG_LENGTH,&len);
char* log = (char*)malloc(len + 1);
glGetShaderInfoLog(v,&len,log);
printf("Vertex Shader compilation failed: %s\n",log);
free(log);
}
glCompileShader(f);
glGetShaderiv(f,&compiled);
if (!compiled) {
GLsizei len;
glGetShaderiv(f,&len);
char* log = (char*)malloc(len + 1);
glGetShaderInfoLog(f,log);
printf("Vertex Shader compilation failed: %s\n",log);
free(log);
}
glAttachShader(p,v);
glAttachShader(p,f);
glLinkProgram(p);
GLint linked;
glGetProgramiv(p,GL_LINK_STATUS,&linked);
if (!linked) {
GLsizei len;
glGetProgramiv(p,&len);
char* log = (char*)malloc(len + 1);
glGetProgramInfoLog(p,log);
printf("Shader linking failed: %s\n",log);
free(log);
}
glUseProgram(p);
return p;
}
/*******************************************************/
void init() {
glGenVertexArrays(1,&vao);
glBindVertexArray(vao);
glGenBuffers(1,&vbo);
glBindBuffer(GL_ARRAY_BUFFER,vbo);
glBufferData(GL_ARRAY_BUFFER,sizeof(vertices),vertices,GL_STATIC_DRAW);
GLuint program = initShaders("triangle.vs","triangle.fs");
glVertexAttribPointer(0,2,GL_FLOAT,GL_FALSE,0);
glEnableVertexAttribArray(0);
}
/**********************************************************/
void display(void) {
glClear(GL_COLOR_BUFFER_BIT);
glBindVertexArray(vao);
glDrawArrays(GL_TRIANGLES,3);
glFlush();
}
/*******************************************************/
int main(int argc,char** argv) {
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_RGBA);
glutInitWindowSize(512,512);
glutInitWindowPosition(0,0);
glutCreateWindow("Triangle");
if (glewInit()) {
printf("%s\n","Unable to initialize GLEW ...");
}
init();
/* we can now get data for the specific OpenGL instance we created */
const GLubyte *renderer = glGetString(GL_RENDERER);
const GLubyte *vendor = glGetString(GL_VENDOR);
const GLubyte *version = glGetString(GL_VERSION);
const GLubyte *glslVersion = glGetString(GL_SHADING_LANGUAGE_VERSION);
printf("GL Vendor : %s\n",vendor);
printf("GL Renderer : %s\n",renderer);
printf("GL Version (string) : %s\n",version);
printf("GLSL Version : %s\n",glslVersion);
printf("%s\n",glGetString(GL_VERSION));
glutDisplayFunc(display);
glutMainLoop();
return 0;
}
/*******************************************************/
这是我的系统 opengl 信息来自 glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) UHD Graphics 620 (Kabylake GT2)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 18.3.6
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 18.3.6
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 18.3.6
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:
我为 linux 安装了所有我看到需要的 mesa/glut/glew 包，但似乎安装了所有需要的东西。
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
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