void GLSLShader::compileFromSource(const char* vertexShaderSource, const char* fragmentShaderSource)
{
vs_object = createShaderFromSource(GL_VERTEX_SHADER, string(vertexShaderSource));
fs_object = createShaderFromSource(GL_FRAGMENT_SHADER, string(fragmentShaderSource));
prog_object = glCreateProgram();
if (vs_object)
glAttachShader(prog_object, vs_object);
if (fs_object)
glAttachShader(prog_object, fs_object);
glLinkProgram(prog_object);
printProgramLog(prog_object);
}
/**
* \fn loadShader
* @param src
* @return
*/
bool shaderLoader::loadShader(const char *src)
{
if(!ADM_fileExist(src))
{
ADM_warning("Shader file does not exist (%s)\n",src);
return false;
}
int sourceSize=ADM_fileSize(src);
if(sourceSize<5)
{
ADM_warning("Shader file is too short(%s)\n",src);
return false;
}
uint8_t *buffer=(uint8_t *)admAlloca(sourceSize+1);
FILE *f=fopen(params.shaderFile.c_str(),"rt");
if(!f)
{
ADM_warning("Cannot open file %s\n",src);
return false;
}
fread(buffer,sourceSize,1,f);
buffer[sourceSize]=0;
fclose(f);
f=NULL;
if(glProgramY)
{
delete glProgramY;
glProgramY=NULL;
}
glProgramY = createShaderFromSource(QOpenGLShader::Fragment,(char *)buffer);
if(!glProgramY)
{
ADM_error("Shader compiling failed\n");
return false;
}
ADM_info("Shader %s successfully loaded an compiled\n",src);
return true;
}
GLuint createShader(GLuint stype, const std::string& file)
{
string str = readShaderSource(file);
assert(!str.empty());
if(!str.empty())
{
GLuint shader = createShaderFromSource(stype, str);
if(!check(shader))
{
cerr << file << endl;
printShaderLog(shader);
glDeleteShader(shader);
return 0;
}
return shader;
}
return 0;
}
