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copied!<p><code>glShaderSource</code> doesn't have to be quite that complex (it's not dependent on pointer-per-line and I'm not sure it will your code if you give it a line split on the 255th character). Put all your text into one string or buffer, take a pointer to it and call glShaderSource with a pointer to that pointer.</p> <pre><code>bool GLShader::LoadShader(string sFile, int a_iType) { std::ifstream isSrc(sFile.c_str(), std::ifstream::in); if(!isSrc.good()) return false; std::string sLines = ""; std::string sLine; while (isSrc.good()) { std::getline(isSrc, sLine); sLines.append(sLine); } isSrc.close(); uiShader = glCreateShader(a_iType); const char* szSrc = sLines.c_str(); glShaderSource(uiShader, 1, &szSrc, NULL); </code></pre> <p>For fun and giggles, a version using memory-mapped file io.</p> <pre><code>bool GLShader::LoadShader(const std::string& sFile, int a_iType) { bool success = false; // Windows implementation. HANDLE fileHandle = INVALID_HANDLE_VALUE, mappingHandle = INVALID_HANDLE_VALUE; do { // not actually a loop fileHandle = CreateFile(sFile.c_str(), FILE_GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, 0, nullptr); if (fileHandle == INVALID_HANDLE_VALUE) break; mappingHandle = CreateFileMapping(fileHandle, nullptr, PAGE_READONLY, 0, 0, nullptr); if (mappingHandle == INVALID_HANDLE_VALUE) break; LPVOID const lpvData = MapViewOfFileEx(mappingHandle, FILE_MAP_READ, 0, 0, 0, nullptr); if (!lpvData) break; /* ... other stuff */ const char* pszSrc = static_cast<const char*>(lpvData); glShaderSource(uiShader, 1, &pszSrc, nullptr); /* ... the rest of your code */ success = true; } while (false); // never repeat // cleanup if (mappingHandle != INVALID_HANDLE_VALUE) CloseHandle(mappingHandle); if (fileHandle != INVALID_HANDLE_VALUE) CloseHandle(fileHandle); return success; } </code></pre>

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