diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/video/opengl.cpp | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/video/opengl.cpp b/src/video/opengl.cpp index c811be2ef..dbb5ee01a 100644 --- a/src/video/opengl.cpp +++ b/src/video/opengl.cpp @@ -30,6 +30,9 @@ #include "../safeguards.h" +static PFNGLDEBUGMESSAGECONTROLPROC _glDebugMessageControl; +static PFNGLDEBUGMESSAGECALLBACKPROC _glDebugMessageCallback; + /* static */ OpenGLBackend *OpenGLBackend::instance = nullptr; GetOGLProcAddressProc GetOGLProcAddress; @@ -109,6 +112,59 @@ bool IsOpenGLVersionAtLeast(byte major, byte minor) return (_gl_major_ver > major) || (_gl_major_ver == major && _gl_minor_ver >= minor); } +/** Callback to receive OpenGL debug messages. */ +void APIENTRY DebugOutputCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, const void *userParam) +{ + /* Make severity human readable. */ + const char *severity_str = ""; + switch (severity) { + case GL_DEBUG_SEVERITY_HIGH: severity_str = "high"; break; + case GL_DEBUG_SEVERITY_MEDIUM: severity_str = "medium"; break; + case GL_DEBUG_SEVERITY_LOW: severity_str = "low"; break; + } + + /* Make type human readable.*/ + const char *type_str = "Other"; + switch (type) { + case GL_DEBUG_TYPE_ERROR: type_str = "Error"; break; + case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR: type_str = "Deprecated"; break; + case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR: type_str = "Undefined behaviour"; break; + case GL_DEBUG_TYPE_PERFORMANCE: type_str = "Performance"; break; + case GL_DEBUG_TYPE_PORTABILITY: type_str = "Portability"; break; + } + + DEBUG(driver, 6, "OpenGL: %s (%s) - %s", type_str, severity_str, message); +} + +/** Enable OpenGL debug messages if supported. */ +void SetupDebugOutput() +{ +#ifndef NO_DEBUG_MESSAGES + if (_debug_driver_level < 6) return; + + if (IsOpenGLVersionAtLeast(4, 3)) { + _glDebugMessageControl = (PFNGLDEBUGMESSAGECONTROLPROC)GetOGLProcAddress("glDebugMessageControl"); + _glDebugMessageCallback = (PFNGLDEBUGMESSAGECALLBACKPROC)GetOGLProcAddress("glDebugMessageCallback"); + } else if (IsOpenGLExtensionSupported("GL_ARB_debug_output")) { + _glDebugMessageControl = (PFNGLDEBUGMESSAGECONTROLPROC)GetOGLProcAddress("glDebugMessageControlARB"); + _glDebugMessageCallback = (PFNGLDEBUGMESSAGECALLBACKPROC)GetOGLProcAddress("glDebugMessageCallbackARB"); + } + + if (_glDebugMessageControl != nullptr && _glDebugMessageCallback != nullptr) { + /* Enable debug output. As synchronous debug output costs performance, we only enable it with a high debug level. */ + glEnable(GL_DEBUG_OUTPUT); + if (_debug_driver_level >= 8) glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS); + + _glDebugMessageCallback(&DebugOutputCallback, nullptr); + /* Enable all messages on highest debug level.*/ + _glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, nullptr, _debug_driver_level >= 9 ? GL_TRUE : GL_FALSE); + /* Get debug messages for errors and undefined/deprecated behaviour. */ + _glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_ERROR, GL_DONT_CARE, 0, nullptr, GL_TRUE); + _glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR, GL_DONT_CARE, 0, nullptr, GL_TRUE); + _glDebugMessageControl(GL_DONT_CARE, GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR, GL_DONT_CARE, 0, nullptr, GL_TRUE); + } +#endif +} /** * Create and initialize the singleton back-end class. @@ -169,6 +225,8 @@ const char *OpenGLBackend::Init() _gl_major_ver = atoi(ver); _gl_minor_ver = minor != nullptr ? atoi(minor + 1) : 0; + SetupDebugOutput(); + /* OpenGL 1.3 is the absolute minimum. */ if (!IsOpenGLVersionAtLeast(1, 3)) return "OpenGL version >= 1.3 required"; /* Check for non-power-of-two texture support. */ |