Add gl_debug cvar, if enabled the GL context will have GL_ARB_debug_output enabled...

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@12441 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/gl_backend.c b/gl_backend.c
index 73c011029e1f0158c884179fc16c0bdb64d0b767..52e392dcd1c607a596037b48a0978dded7d0022b 100644 (file)
--- a/gl_backend.c
+++ b/gl_backend.c
@@ -75,6 +75,7 @@
 
 #define MAX_RENDERTARGETS 4
 
+cvar_t gl_debug = {0, "gl_debug", "0", "enables OpenGL debug output, 0 = off, 1 = HIGH severity only, 2 = also MEDIUM severity, 3 = also LOW severity messages.  (note: enabling may not take effect until vid_restart on some drivers)"};
 cvar_t gl_paranoid = {0, "gl_paranoid", "0", "enables OpenGL error checking and other tests"};
 cvar_t gl_printcheckerror = {0, "gl_printcheckerror", "0", "prints all OpenGL error checks, useful to identify location of driver crashes"};
 
@@ -151,6 +152,36 @@ void GL_PrintError(int errornumber, const char *filename, int linenumber)
                break;
        }
 }
+
+static void GLAPIENTRY GL_DebugOutputCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const GLvoid* userParam)
+{
+       const char *sev = "ENUM?", *typ = "ENUM?", *src = "ENUM?";
+       switch (severity)
+       {
+       case GL_DEBUG_SEVERITY_LOW_ARB: sev = "LOW"; break;
+       case GL_DEBUG_SEVERITY_MEDIUM_ARB: sev = "MED"; break;
+       case GL_DEBUG_SEVERITY_HIGH_ARB: sev = "HIGH"; break;
+       }
+       switch (type)
+       {
+       case GL_DEBUG_TYPE_ERROR_ARB: typ = "ERROR"; break;
+       case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB: typ = "DEPRECATED"; break;
+       case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB: typ = "UNDEFINED"; break;
+       case GL_DEBUG_TYPE_PORTABILITY_ARB: typ = "PORTABILITY"; break;
+       case GL_DEBUG_TYPE_PERFORMANCE_ARB: typ = "PERFORMANCE"; break;
+       case GL_DEBUG_TYPE_OTHER_ARB: typ = "OTHER"; break;
+       }
+       switch (source)
+       {
+       case GL_DEBUG_SOURCE_API_ARB: src = "API"; break;
+       case GL_DEBUG_SOURCE_SHADER_COMPILER_ARB: src = "SHADER"; break;
+       case GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB: src = "WIN"; break;
+       case GL_DEBUG_SOURCE_THIRD_PARTY_ARB: src = "THIRDPARTY"; break;
+       case GL_DEBUG_SOURCE_APPLICATION_ARB: src = "APP"; break;
+       case GL_DEBUG_SOURCE_OTHER_ARB: src = "OTHER"; break;
+       }
+       Con_Printf("GLDEBUG: %s %s %s: %u: %s\n", sev, typ, src, (unsigned int)id, message);
+}
 #endif
 
 #define BACKENDACTIVECHECK if (!gl_state.active) Sys_Error("GL backend function called when backend is not active");
@@ -414,7 +445,7 @@ void gl_backend_init(void)
        Cvar_RegisterVariable(&r_waterwarp);
        Cvar_RegisterVariable(&gl_polyblend);
        Cvar_RegisterVariable(&v_flipped);
-       Cvar_RegisterVariable(&gl_dither);
+       Cvar_RegisterVariable(&gl_debug);
        Cvar_RegisterVariable(&gl_paranoid);
        Cvar_RegisterVariable(&gl_printcheckerror);
 

diff --git a/glquake.h b/glquake.h
index 4026c29609a25c5cc55940915394622fbb12caa5..8b296f1ebed6fd24b347ae93faab0a56bb4893ce 100644 (file)
--- a/glquake.h
+++ b/glquake.h
@@ -1136,6 +1136,12 @@ void GL_PrintError(int errornumber, const char *filename, int linenumber);
 #define qglGetVertexAttribfv glGetVertexAttribfv
 #define qglGetVertexAttribiv glGetVertexAttribiv
 #define qglGetVertexAttribPointerv glGetVertexAttribPointerv
+
+extern GLuint(GLAPIENTRY *qglGetDebugMessageLogARB)(GLuint count, GLsizei bufSize, GLenum* sources, GLenum* types, GLuint* ids, GLenum* severities, GLsizei* lengths, GLchar* messageLog);
+extern void (GLAPIENTRY *qglDebugMessageCallbackARB)(GLDEBUGPROCARB callback, const GLvoid* userParam);
+extern void (GLAPIENTRY *qglDebugMessageControlARB)(GLenum source, GLenum type, GLenum severity, GLsizei count, const GLuint* ids, GLboolean enabled);
+extern void (GLAPIENTRY *qglDebugMessageInsertARB)(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* buf);
+typedef void (GLAPIENTRY *GLDEBUGPROCARB)(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const GLvoid* userParam);
 #endif
 
 #endif

diff --git a/vid.h b/vid.h
index e1b14ef1b9956438a8c5e56831ee4a3a5199638b..ac3e17f54a9c7e98dcb57edab31f574060683f8e 100644 (file)
--- a/vid.h
+++ b/vid.h
@@ -56,6 +56,7 @@ typedef struct viddef_support_s
        qboolean arb_half_float_pixel;
        qboolean arb_half_float_vertex;
        qboolean arb_multisample;
+       qboolean arb_debug_output;
 }
 viddef_support_t;
 

diff --git a/vid_sdl.c b/vid_sdl.c
index f01a4e85da2caa9ebcc8e239898ccbd6b6fc8906..d47ffdb042d645ac259d1723f80203b9cddca09c 100644 (file)
--- a/vid_sdl.c
+++ b/vid_sdl.c
@@ -2018,6 +2018,8 @@ static qboolean VID_InitModeGL(viddef_mode_t *mode)
        SDL_GL_SetAttribute (SDL_GL_CONTEXT_MAJOR_VERSION, 2);
        SDL_GL_SetAttribute (SDL_GL_CONTEXT_MINOR_VERSION, 0);
        SDL_GL_SetAttribute (SDL_GL_RETAINED_BACKING, 1);
+#else
+       SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, (gl_debug.integer > 0 ? SDL_GL_CONTEXT_DEBUG_FLAG : 0));
 #endif
 
        video_bpp = mode->bitsperpixel;

diff --git a/vid_shared.c b/vid_shared.c
index f29eea2a12bb03ffd6525fbfbfc4712402ee84c1..11709033acbf15d1208c47630d5d92c762514d7b 100644 (file)
--- a/vid_shared.c
+++ b/vid_shared.c
@@ -438,6 +438,11 @@ void (GLAPIENTRY *qglGetIntegeri_v)(GLenum target, GLuint index, GLint* data);
 void (GLAPIENTRY *qglUniformBlockBinding)(GLuint program, GLuint uniformBlockIndex, GLuint uniformBlockBinding);
 
 void (GLAPIENTRY *qglBlendFuncSeparate)(GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
+
+GLuint (GLAPIENTRY *qglGetDebugMessageLogARB)(GLuint count, GLsizei bufSize, GLenum* sources, GLenum* types, GLuint* ids, GLenum* severities, GLsizei* lengths, GLchar* messageLog);
+void (GLAPIENTRY *qglDebugMessageCallbackARB)(GLDEBUGPROCARB callback, const GLvoid* userParam);
+void (GLAPIENTRY *qglDebugMessageControlARB)(GLenum source, GLenum type, GLenum severity, GLsizei count, const GLuint* ids, GLboolean enabled);
+void (GLAPIENTRY *qglDebugMessageInsertARB)(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* buf);
 #endif
 
 #if _MSC_VER >= 1400
@@ -758,6 +763,16 @@ static dllfunction_t blendfuncseparatefuncs[] =
        {NULL, NULL}
 };
 
+static dllfunction_t debugoutputfuncs[] =
+{
+       {"glDebugMessageControlARB", (void **)&qglDebugMessageControlARB},
+       {"glDebugMessageInsertARB", (void **)&qglDebugMessageInsertARB},
+       {"glDebugMessageCallbackARB", (void **)&qglDebugMessageCallbackARB},
+       {"glGetDebugMessageLogARB", (void **)&qglGetDebugMessageLogARB},
+       {"glGetPointerv", (void **)&qglGetPointerv},
+       {NULL, NULL}
+};
+
 #endif
 
 void VID_ClearExtensions(void)
@@ -829,6 +844,7 @@ void VID_CheckExtensions(void)
        vid.support.arb_half_float_pixel = GL_CheckExtension("GL_ARB_half_float_pixel", NULL, "-nohalffloatpixel", false);
        vid.support.arb_half_float_vertex = GL_CheckExtension("GL_ARB_half_float_vertex", NULL, "-nohalffloatvertex", false);
        vid.support.arb_multisample = GL_CheckExtension("GL_ARB_multisample", multisamplefuncs, "-nomultisample", false);
+       vid.support.arb_debug_output = GL_CheckExtension("GL_ARB_debug_output", debugoutputfuncs, "-nogldebugoutput", false);
        vid.allowalphatocoverage = false;
 
 // COMMANDLINEOPTION: GL: -noshaders disables use of OpenGL 2.0 shaders (which allow pixel shader effects, can improve per pixel lighting performance and capabilities)