/** * \file errors.c * Mesa debugging and error handling functions. */ /* * Mesa 3-D graphics library * * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ #include "errors.h" #include "enums.h" #include "imports.h" #include "context.h" #include "dispatch.h" #include "hash.h" #include "mtypes.h" #include "version.h" #include "hash_table.h" static mtx_t DynamicIDMutex = _MTX_INITIALIZER_NP; static GLuint NextDynamicID = 1; struct gl_debug_severity { struct simple_node link; GLuint ID; }; static char out_of_memory[] = "Debugging error: out of memory"; static const GLenum debug_source_enums[] = { GL_DEBUG_SOURCE_API, GL_DEBUG_SOURCE_WINDOW_SYSTEM, GL_DEBUG_SOURCE_SHADER_COMPILER, GL_DEBUG_SOURCE_THIRD_PARTY, GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_SOURCE_OTHER, }; static const GLenum debug_type_enums[] = { GL_DEBUG_TYPE_ERROR, GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR, GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR, GL_DEBUG_TYPE_PORTABILITY, GL_DEBUG_TYPE_PERFORMANCE, GL_DEBUG_TYPE_OTHER, GL_DEBUG_TYPE_MARKER, GL_DEBUG_TYPE_PUSH_GROUP, GL_DEBUG_TYPE_POP_GROUP, }; static const GLenum debug_severity_enums[] = { GL_DEBUG_SEVERITY_LOW, GL_DEBUG_SEVERITY_MEDIUM, GL_DEBUG_SEVERITY_HIGH, GL_DEBUG_SEVERITY_NOTIFICATION, }; static enum mesa_debug_source gl_enum_to_debug_source(GLenum e) { int i; for (i = 0; i < Elements(debug_source_enums); i++) { if (debug_source_enums[i] == e) break; } return i; } static enum mesa_debug_type gl_enum_to_debug_type(GLenum e) { int i; for (i = 0; i < Elements(debug_type_enums); i++) { if (debug_type_enums[i] == e) break; } return i; } static enum mesa_debug_severity gl_enum_to_debug_severity(GLenum e) { int i; for (i = 0; i < Elements(debug_severity_enums); i++) { if (debug_severity_enums[i] == e) break; } return i; } /** * Handles generating a GL_ARB_debug_output message ID generated by the GL or * GLSL compiler. * * The GL API has this "ID" mechanism, where the intention is to allow a * client to filter in/out messages based on source, type, and ID. Of course, * building a giant enum list of all debug output messages that Mesa might * generate is ridiculous, so instead we have our caller pass us a pointer to * static storage where the ID should get stored. This ID will be shared * across all contexts for that message (which seems like a desirable * property, even if it's not expected by the spec), but note that it won't be * the same between executions if messages aren't generated in the same order. */ static void debug_get_id(GLuint *id) { if (!(*id)) { mtx_lock(&DynamicIDMutex); if (!(*id)) *id = NextDynamicID++; mtx_unlock(&DynamicIDMutex); } } /* * We store a bitfield in the hash table, with five possible values total. * * The ENABLED_BIT's purpose is self-explanatory. * * The FOUND_BIT is needed to differentiate the value of DISABLED from * the value returned by HashTableLookup() when it can't find the given key. * * The KNOWN_SEVERITY bit is a bit complicated: * * A client may call Control() with an array of IDs, then call Control() * on all message IDs of a certain severity, then Insert() one of the * previously specified IDs, giving us a known severity level, then call * Control() on all message IDs of a certain severity level again. * * After the first call, those IDs will have a FOUND_BIT, but will not * exist in any severity-specific list, so the second call will not * impact them. This is undesirable but unavoidable given the API: * The only entrypoint that gives a severity for a client-defined ID * is the Insert() call. * * For the sake of Control(), we want to maintain the invariant * that an ID will either appear in none of the three severity lists, * or appear once, to minimize pointless duplication and potential surprises. * * Because Insert() is the only place that will learn an ID's severity, * it should insert an ID into the appropriate list, but only if the ID * doesn't exist in it or any other list yet. Because searching all three * lists at O(n) is needlessly expensive, we store KNOWN_SEVERITY. */ enum { FOUND_BIT = 1 << 0, ENABLED_BIT = 1 << 1, KNOWN_SEVERITY = 1 << 2, /* HashTable reserves zero as a return value meaning 'not found' */ NOT_FOUND = 0, DISABLED = FOUND_BIT, ENABLED = ENABLED_BIT | FOUND_BIT }; static void debug_message_store(struct gl_debug_msg *msg, enum mesa_debug_source source, enum mesa_debug_type type, GLuint id, enum mesa_debug_severity severity, GLsizei len, const char *buf) { assert(!msg->message && !msg->length); msg->message = malloc(len+1); if (msg->message) { (void) strncpy(msg->message, buf, (size_t)len); msg->message[len] = '\0'; msg->length = len+1; msg->source = source; msg->type = type; msg->id = id; msg->severity = severity; } else { static GLuint oom_msg_id = 0; debug_get_id(&oom_msg_id); /* malloc failed! */ msg->message = out_of_memory; msg->length = strlen(out_of_memory)+1; msg->source = MESA_DEBUG_SOURCE_OTHER; msg->type = MESA_DEBUG_TYPE_ERROR; msg->id = oom_msg_id; msg->severity = MESA_DEBUG_SEVERITY_HIGH; } } /** * Allocate and initialize context debug state. */ static struct gl_debug_state * debug_create(void) { struct gl_debug_state *debug; int s, t, sev; debug = CALLOC_STRUCT(gl_debug_state); if (!debug) return NULL; /* Enable all the messages with severity HIGH or MEDIUM by default. */ memset(debug->Defaults[0][MESA_DEBUG_SEVERITY_HIGH], GL_TRUE, sizeof debug->Defaults[0][MESA_DEBUG_SEVERITY_HIGH]); memset(debug->Defaults[0][MESA_DEBUG_SEVERITY_MEDIUM], GL_TRUE, sizeof debug->Defaults[0][MESA_DEBUG_SEVERITY_MEDIUM]); memset(debug->Defaults[0][MESA_DEBUG_SEVERITY_LOW], GL_FALSE, sizeof debug->Defaults[0][MESA_DEBUG_SEVERITY_LOW]); /* Initialize state for filtering known debug messages. */ for (s = 0; s < MESA_DEBUG_SOURCE_COUNT; s++) { for (t = 0; t < MESA_DEBUG_TYPE_COUNT; t++) { debug->Namespaces[0][s][t].IDs = _mesa_NewHashTable(); assert(debug->Namespaces[0][s][t].IDs); for (sev = 0; sev < MESA_DEBUG_SEVERITY_COUNT; sev++) { make_empty_list(&debug->Namespaces[0][s][t].Severity[sev]); } } } return debug; } /* * Sets the state of the given message source/type/ID tuple. */ static void debug_set_message_enable(struct gl_debug_state *debug, enum mesa_debug_source source, enum mesa_debug_type type, GLuint id, GLboolean enabled) { GLint gstack = debug->GroupStackDepth; struct gl_debug_namespace *nspace = &debug->Namespaces[gstack][source][type]; uintptr_t state; /* In addition to not being able to store zero as a value, HashTable also * can't use zero as a key. */ if (id) state = (uintptr_t)_mesa_HashLookup(nspace->IDs, id); else state = nspace->ZeroID; if (state == NOT_FOUND) state = enabled ? ENABLED : DISABLED; else { if (enabled) state |= ENABLED_BIT; else state &= ~ENABLED_BIT; } if (id) _mesa_HashInsert(nspace->IDs, id, (void*)state); else nspace->ZeroID = state; } /** * Returns if the given message source/type/ID tuple is enabled. */ static bool debug_is_message_enabled(struct gl_debug_state *debug, enum mesa_debug_source source, enum mesa_debug_type type, GLuint id, enum mesa_debug_severity severity) { const GLint gstack = debug->GroupStackDepth; struct gl_debug_namespace *nspace = &debug->Namespaces[gstack][source][type]; uintptr_t state = 0; if (!debug->DebugOutput) return false; /* In addition to not being able to store zero as a value, HashTable also * can't use zero as a key. */ if (id) state = (uintptr_t)_mesa_HashLookup(nspace->IDs, id); else state = nspace->ZeroID; /* Only do this once for each ID. This makes sure the ID exists in, * at most, one list, and does not pointlessly appear multiple times. */ if (!(state & KNOWN_SEVERITY)) { struct gl_debug_severity *entry; if (state == NOT_FOUND) { if (debug->Defaults[gstack][severity][source][type]) state = ENABLED; else state = DISABLED; } entry = malloc(sizeof *entry); if (!entry) goto out; state |= KNOWN_SEVERITY; if (id) _mesa_HashInsert(nspace->IDs, id, (void*)state); else nspace->ZeroID = state; entry->ID = id; insert_at_tail(&nspace->Severity[severity], &entry->link); } out: return (state & ENABLED_BIT); } /** * 'buf' is not necessarily a null-terminated string. When logging, copy * 'len' characters from it, store them in a new, null-terminated string, * and remember the number of bytes used by that string, *including* * the null terminator this time. */ static void debug_log_message(struct gl_debug_state *debug, enum mesa_debug_source source, enum mesa_debug_type type, GLuint id, enum mesa_debug_severity severity, GLsizei len, const char *buf) { GLint nextEmpty; struct gl_debug_msg *emptySlot; assert(len >= 0 && len < MAX_DEBUG_MESSAGE_LENGTH); if (debug->NumMessages == MAX_DEBUG_LOGGED_MESSAGES) return; nextEmpty = (debug->NextMsg + debug->NumMessages) % MAX_DEBUG_LOGGED_MESSAGES; emptySlot = &debug->Log[nextEmpty]; debug_message_store(emptySlot, source, type, id, severity, len, buf); if (debug->NumMessages == 0) debug->NextMsgLength = debug->Log[debug->NextMsg].length; debug->NumMessages++; } /** * Return debug state for the context. The debug state will be allocated * and initialized upon the first call. */ struct gl_debug_state * _mesa_get_debug_state(struct gl_context *ctx) { if (!ctx->Debug) { ctx->Debug = debug_create(); if (!ctx->Debug) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "allocating debug state"); } } return ctx->Debug; } static GLboolean should_log(struct gl_context *ctx, enum mesa_debug_source source, enum mesa_debug_type type, GLuint id, enum mesa_debug_severity severity) { struct gl_debug_state *debug; if (!ctx->Debug) { /* no debug state set so far */ return GL_FALSE; } debug = _mesa_get_debug_state(ctx); if (debug) return debug_is_message_enabled(debug, source, type, id, severity); else return GL_FALSE; } static void set_message_state(struct gl_context *ctx, enum mesa_debug_source source, enum mesa_debug_type type, GLuint id, GLboolean enabled) { struct gl_debug_state *debug = _mesa_get_debug_state(ctx); if (debug) debug_set_message_enable(debug, source, type, id, enabled); } /** * Log a client or driver debug message. */ static void log_msg(struct gl_context *ctx, enum mesa_debug_source source, enum mesa_debug_type type, GLuint id, enum mesa_debug_severity severity, GLint len, const char *buf) { struct gl_debug_state *debug = _mesa_get_debug_state(ctx); if (!debug) return; if (!should_log(ctx, source, type, id, severity)) return; if (debug->Callback) { GLenum gl_type = debug_type_enums[type]; GLenum gl_severity = debug_severity_enums[severity]; debug->Callback(debug_source_enums[source], gl_type, id, gl_severity, len, buf, debug->CallbackData); return; } debug_log_message(debug, source, type, id, severity, len, buf); } /** * Pop the oldest debug message out of the log. * Writes the message string, including the null terminator, into 'buf', * using up to 'bufSize' bytes. If 'bufSize' is too small, or * if 'buf' is NULL, nothing is written. * * Returns the number of bytes written on success, or when 'buf' is NULL, * the number that would have been written. A return value of 0 * indicates failure. */ static GLsizei get_msg(struct gl_context *ctx, GLenum *source, GLenum *type, GLuint *id, GLenum *severity, GLsizei bufSize, char *buf) { struct gl_debug_state *debug = _mesa_get_debug_state(ctx); struct gl_debug_msg *msg; GLsizei length; if (!debug || debug->NumMessages == 0) return 0; msg = &debug->Log[debug->NextMsg]; length = msg->length; assert(length > 0 && length == debug->NextMsgLength); if (bufSize < length && buf != NULL) return 0; if (severity) { *severity = debug_severity_enums[msg->severity]; } if (source) { *source = debug_source_enums[msg->source]; } if (type) { *type = debug_type_enums[msg->type]; } if (id) { *id = msg->id; } if (buf) { assert(msg->message[length-1] == '\0'); (void) strncpy(buf, msg->message, (size_t)length); } if (msg->message != (char*)out_of_memory) free(msg->message); msg->message = NULL; msg->length = 0; debug->NumMessages--; debug->NextMsg++; debug->NextMsg %= MAX_DEBUG_LOGGED_MESSAGES; debug->NextMsgLength = debug->Log[debug->NextMsg].length; return length; } /** * Verify that source, type, and severity are valid enums. * * The 'caller' param is used for handling values available * only in glDebugMessageInsert or glDebugMessageControl */ static GLboolean validate_params(struct gl_context *ctx, unsigned caller, const char *callerstr, GLenum source, GLenum type, GLenum severity) { #define INSERT 1 #define CONTROL 2 switch(source) { case GL_DEBUG_SOURCE_APPLICATION_ARB: case GL_DEBUG_SOURCE_THIRD_PARTY_ARB: break; case GL_DEBUG_SOURCE_API_ARB: case GL_DEBUG_SOURCE_SHADER_COMPILER_ARB: case GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB: case GL_DEBUG_SOURCE_OTHER_ARB: if (caller != INSERT) break; else goto error; case GL_DONT_CARE: if (caller == CONTROL) break; else goto error; default: goto error; } switch(type) { case GL_DEBUG_TYPE_ERROR_ARB: case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB: case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB: case GL_DEBUG_TYPE_PERFORMANCE_ARB: case GL_DEBUG_TYPE_PORTABILITY_ARB: case GL_DEBUG_TYPE_OTHER_ARB: case GL_DEBUG_TYPE_MARKER: break; case GL_DEBUG_TYPE_PUSH_GROUP: case GL_DEBUG_TYPE_POP_GROUP: case GL_DONT_CARE: if (caller == CONTROL) break; else goto error; default: goto error; } switch(severity) { case GL_DEBUG_SEVERITY_HIGH_ARB: case GL_DEBUG_SEVERITY_MEDIUM_ARB: case GL_DEBUG_SEVERITY_LOW_ARB: case GL_DEBUG_SEVERITY_NOTIFICATION: break; case GL_DONT_CARE: if (caller == CONTROL) break; else goto error; default: goto error; } return GL_TRUE; error: _mesa_error(ctx, GL_INVALID_ENUM, "bad values passed to %s" "(source=0x%x, type=0x%x, severity=0x%x)", callerstr, source, type, severity); return GL_FALSE; } /** * Set the state of all message IDs found in the given intersection of * 'source', 'type', and 'severity'. The _COUNT enum can be used for * GL_DONT_CARE (include all messages in the class). * * This requires both setting the state of all previously seen message * IDs in the hash table, and setting the default state for all * applicable combinations of source/type/severity, so that all the * yet-unknown message IDs that may be used in the future will be * impacted as if they were already known. */ static void control_messages(struct gl_context *ctx, enum mesa_debug_source source, enum mesa_debug_type type, enum mesa_debug_severity severity, GLboolean enabled) { struct gl_debug_state *debug = _mesa_get_debug_state(ctx); int s, t, sev, smax, tmax, sevmax; const GLint gstack = debug ? debug->GroupStackDepth : 0; if (!debug) return; if (source == MESA_DEBUG_SOURCE_COUNT) { source = 0; smax = MESA_DEBUG_SOURCE_COUNT; } else { smax = source+1; } if (type == MESA_DEBUG_TYPE_COUNT) { type = 0; tmax = MESA_DEBUG_TYPE_COUNT; } else { tmax = type+1; } if (severity == MESA_DEBUG_SEVERITY_COUNT) { severity = 0; sevmax = MESA_DEBUG_SEVERITY_COUNT; } else { sevmax = severity+1; } for (sev = severity; sev < sevmax; sev++) { for (s = source; s < smax; s++) { for (t = type; t < tmax; t++) { struct simple_node *node; struct gl_debug_severity *entry; /* change the default for IDs we've never seen before. */ debug->Defaults[gstack][sev][s][t] = enabled; /* Now change the state of IDs we *have* seen... */ foreach(node, &debug->Namespaces[gstack][s][t].Severity[sev]) { entry = (struct gl_debug_severity *)node; set_message_state(ctx, s, t, entry->ID, enabled); } } } } } /** * Debugging-message namespaces with the source APPLICATION or THIRD_PARTY * require special handling, since the IDs in them are controlled by clients, * not the OpenGL implementation. * * 'count' is the length of the array 'ids'. If 'count' is nonzero, all * the given IDs in the namespace defined by 'esource' and 'etype' * will be affected. * * If 'count' is zero, this sets the state of all IDs that match * the combination of 'esource', 'etype', and 'eseverity'. */ static void control_app_messages(struct gl_context *ctx, GLenum esource, GLenum etype, GLenum eseverity, GLsizei count, const GLuint *ids, GLboolean enabled) { GLsizei i; enum mesa_debug_source source = gl_enum_to_debug_source(esource); enum mesa_debug_type type = gl_enum_to_debug_type(etype); enum mesa_debug_severity severity = gl_enum_to_debug_severity(eseverity); for (i = 0; i < count; i++) set_message_state(ctx, source, type, ids[i], enabled); if (count) return; control_messages(ctx, source, type, severity, enabled); } /** * This is a generic message insert function. * Validation of source, type and severity parameters should be done * before calling this funtion. */ static void message_insert(GLenum source, GLenum type, GLuint id, GLenum severity, GLint length, const GLchar *buf, const char *callerstr) { GET_CURRENT_CONTEXT(ctx); if (length < 0) length = strlen(buf); if (length >= MAX_DEBUG_MESSAGE_LENGTH) { _mesa_error(ctx, GL_INVALID_VALUE, "%s(length=%d, which is not less than " "GL_MAX_DEBUG_MESSAGE_LENGTH=%d)", callerstr, length, MAX_DEBUG_MESSAGE_LENGTH); return; } log_msg(ctx, gl_enum_to_debug_source(source), gl_enum_to_debug_type(type), id, gl_enum_to_debug_severity(severity), length, buf); } static void do_nothing(GLuint key, void *data, void *userData) { } /** * Free context state pertaining to error/debug state for the given stack * depth. */ static void free_errors_data(struct gl_context *ctx, GLint gstack) { struct gl_debug_state *debug = ctx->Debug; enum mesa_debug_type t; enum mesa_debug_source s; enum mesa_debug_severity sev; assert(debug); /* Tear down state for filtering debug messages. */ for (s = 0; s < MESA_DEBUG_SOURCE_COUNT; s++) { for (t = 0; t < MESA_DEBUG_TYPE_COUNT; t++) { _mesa_HashDeleteAll(debug->Namespaces[gstack][s][t].IDs, do_nothing, NULL); _mesa_DeleteHashTable(debug->Namespaces[gstack][s][t].IDs); for (sev = 0; sev < MESA_DEBUG_SEVERITY_COUNT; sev++) { struct simple_node *node, *tmp; struct gl_debug_severity *entry; foreach_s(node, tmp, &debug->Namespaces[gstack][s][t].Severity[sev]) { entry = (struct gl_debug_severity *)node; free(entry); } } } } } void GLAPIENTRY _mesa_DebugMessageInsert(GLenum source, GLenum type, GLuint id, GLenum severity, GLint length, const GLchar *buf) { const char *callerstr = "glDebugMessageInsert"; GET_CURRENT_CONTEXT(ctx); if (!validate_params(ctx, INSERT, callerstr, source, type, severity)) return; /* GL_INVALID_ENUM */ message_insert(source, type, id, severity, length, buf, callerstr); } GLuint GLAPIENTRY _mesa_GetDebugMessageLog(GLuint count, GLsizei logSize, GLenum *sources, GLenum *types, GLenum *ids, GLenum *severities, GLsizei *lengths, GLchar *messageLog) { GET_CURRENT_CONTEXT(ctx); GLuint ret; if (!messageLog) logSize = 0; if (logSize < 0) { _mesa_error(ctx, GL_INVALID_VALUE, "glGetDebugMessageLog(logSize=%d : logSize must not be" " negative)", logSize); return 0; } for (ret = 0; ret < count; ret++) { GLsizei written = get_msg(ctx, sources, types, ids, severities, logSize, messageLog); if (!written) break; if (messageLog) { messageLog += written; logSize -= written; } if (lengths) { *lengths = written; lengths++; } if (severities) severities++; if (sources) sources++; if (types) types++; if (ids) ids++; } return ret; } void GLAPIENTRY _mesa_DebugMessageControl(GLenum gl_source, GLenum gl_type, GLenum gl_severity, GLsizei count, const GLuint *ids, GLboolean enabled) { const char *callerstr = "glDebugMessageControl"; GET_CURRENT_CONTEXT(ctx); if (count < 0) { _mesa_error(ctx, GL_INVALID_VALUE, "%s(count=%d : count must not be negative)", callerstr, count); return; } if (!validate_params(ctx, CONTROL, callerstr, gl_source, gl_type, gl_severity)) return; /* GL_INVALID_ENUM */ if (count && (gl_severity != GL_DONT_CARE || gl_type == GL_DONT_CARE || gl_source == GL_DONT_CARE)) { _mesa_error(ctx, GL_INVALID_OPERATION, "%s(When passing an array of ids, severity must be" " GL_DONT_CARE, and source and type must not be GL_DONT_CARE.", callerstr); return; } control_app_messages(ctx, gl_source, gl_type, gl_severity, count, ids, enabled); } void GLAPIENTRY _mesa_DebugMessageCallback(GLDEBUGPROC callback, const void *userParam) { GET_CURRENT_CONTEXT(ctx); struct gl_debug_state *debug = _mesa_get_debug_state(ctx); if (debug) { debug->Callback = callback; debug->CallbackData = userParam; } } void GLAPIENTRY _mesa_PushDebugGroup(GLenum source, GLuint id, GLsizei length, const GLchar *message) { GET_CURRENT_CONTEXT(ctx); struct gl_debug_state *debug = _mesa_get_debug_state(ctx); const char *callerstr = "glPushDebugGroup"; int s, t, sev; GLint prevStackDepth; GLint currStackDepth; struct gl_debug_msg *emptySlot; if (!debug) return; if (debug->GroupStackDepth >= MAX_DEBUG_GROUP_STACK_DEPTH-1) { _mesa_error(ctx, GL_STACK_OVERFLOW, "%s", callerstr); return; } switch(source) { case GL_DEBUG_SOURCE_APPLICATION: case GL_DEBUG_SOURCE_THIRD_PARTY: break; default: _mesa_error(ctx, GL_INVALID_ENUM, "bad value passed to %s" "(source=0x%x)", callerstr, source); return; } message_insert(source, GL_DEBUG_TYPE_PUSH_GROUP, id, GL_DEBUG_SEVERITY_NOTIFICATION, length, message, callerstr); prevStackDepth = debug->GroupStackDepth; debug->GroupStackDepth++; currStackDepth = debug->GroupStackDepth; /* pop reuses the message details from push so we store this */ if (length < 0) length = strlen(message); emptySlot = &debug->DebugGroupMsgs[debug->GroupStackDepth]; debug_message_store(emptySlot, gl_enum_to_debug_source(source), gl_enum_to_debug_type(GL_DEBUG_TYPE_PUSH_GROUP), id, gl_enum_to_debug_severity(GL_DEBUG_SEVERITY_NOTIFICATION), length, message); /* inherit the control volume of the debug group previously residing on * the top of the debug group stack */ for (s = 0; s < MESA_DEBUG_SOURCE_COUNT; s++) { for (t = 0; t < MESA_DEBUG_TYPE_COUNT; t++) { /* copy id settings */ debug->Namespaces[currStackDepth][s][t].IDs = _mesa_HashClone(debug->Namespaces[prevStackDepth][s][t].IDs); for (sev = 0; sev < MESA_DEBUG_SEVERITY_COUNT; sev++) { struct gl_debug_severity *entry, *prevEntry; struct simple_node *node; /* copy default settings for unknown ids */ debug->Defaults[currStackDepth][sev][s][t] = debug->Defaults[prevStackDepth][sev][s][t]; /* copy known id severity settings */ make_empty_list(&debug->Namespaces[currStackDepth][s][t].Severity[sev]); foreach(node, &debug->Namespaces[prevStackDepth][s][t].Severity[sev]) { prevEntry = (struct gl_debug_severity *)node; entry = malloc(sizeof *entry); if (!entry) return; entry->ID = prevEntry->ID; insert_at_tail(&debug->Namespaces[currStackDepth][s][t].Severity[sev], &entry->link); } } } } } void GLAPIENTRY _mesa_PopDebugGroup(void) { GET_CURRENT_CONTEXT(ctx); struct gl_debug_state *debug = _mesa_get_debug_state(ctx); const char *callerstr = "glPopDebugGroup"; struct gl_debug_msg *gdmessage; GLint prevStackDepth; if (!debug) return; if (debug->GroupStackDepth <= 0) { _mesa_error(ctx, GL_STACK_UNDERFLOW, "%s", callerstr); return; } prevStackDepth = debug->GroupStackDepth; debug->GroupStackDepth--; gdmessage = &debug->DebugGroupMsgs[prevStackDepth]; /* using log_msg() directly here as verification of parameters * already done in push */ log_msg(ctx, gdmessage->source, gl_enum_to_debug_type(GL_DEBUG_TYPE_POP_GROUP), gdmessage->id, gl_enum_to_debug_severity(GL_DEBUG_SEVERITY_NOTIFICATION), gdmessage->length, gdmessage->message); if (gdmessage->message != (char*)out_of_memory) free(gdmessage->message); gdmessage->message = NULL; gdmessage->length = 0; /* free popped debug group data */ free_errors_data(ctx, prevStackDepth); } void _mesa_init_errors(struct gl_context *ctx) { /* no-op */ } /** * Loop through debug group stack tearing down states for * filtering debug messages. Then free debug output state. */ void _mesa_free_errors_data(struct gl_context *ctx) { if (ctx->Debug) { GLint i; for (i = 0; i <= ctx->Debug->GroupStackDepth; i++) { free_errors_data(ctx, i); } free(ctx->Debug); /* set to NULL just in case it is used before context is completely gone. */ ctx->Debug = NULL; } } /**********************************************************************/ /** \name Diagnostics */ /*@{*/ static void output_if_debug(const char *prefixString, const char *outputString, GLboolean newline) { static int debug = -1; static FILE *fout = NULL; /* Init the local 'debug' var once. * Note: the _mesa_init_debug() function should have been called * by now so MESA_DEBUG_FLAGS will be initialized. */ if (debug == -1) { /* If MESA_LOG_FILE env var is set, log Mesa errors, warnings, * etc to the named file. Otherwise, output to stderr. */ const char *logFile = _mesa_getenv("MESA_LOG_FILE"); if (logFile) fout = fopen(logFile, "w"); if (!fout) fout = stderr; #ifdef DEBUG /* in debug builds, print messages unless MESA_DEBUG="silent" */ if (MESA_DEBUG_FLAGS & DEBUG_SILENT) debug = 0; else debug = 1; #else /* in release builds, be silent unless MESA_DEBUG is set */ debug = _mesa_getenv("MESA_DEBUG") != NULL; #endif } /* Now only print the string if we're required to do so. */ if (debug) { fprintf(fout, "%s: %s", prefixString, outputString); if (newline) fprintf(fout, "\n"); fflush(fout); #if defined(_WIN32) && !defined(_WIN32_WCE) /* stderr from windows applications without console is not usually * visible, so communicate with the debugger instead */ { char buf[4096]; _mesa_snprintf(buf, sizeof(buf), "%s: %s%s", prefixString, outputString, newline ? "\n" : ""); OutputDebugStringA(buf); } #endif } } /** * When a new type of error is recorded, print a message describing * previous errors which were accumulated. */ static void flush_delayed_errors( struct gl_context *ctx ) { char s[MAX_DEBUG_MESSAGE_LENGTH]; if (ctx->ErrorDebugCount) { _mesa_snprintf(s, MAX_DEBUG_MESSAGE_LENGTH, "%d similar %s errors", ctx->ErrorDebugCount, _mesa_lookup_enum_by_nr(ctx->ErrorValue)); output_if_debug("Mesa", s, GL_TRUE); ctx->ErrorDebugCount = 0; } } /** * Report a warning (a recoverable error condition) to stderr if * either DEBUG is defined or the MESA_DEBUG env var is set. * * \param ctx GL context. * \param fmtString printf()-like format string. */ void _mesa_warning( struct gl_context *ctx, const char *fmtString, ... ) { char str[MAX_DEBUG_MESSAGE_LENGTH]; va_list args; va_start( args, fmtString ); (void) _mesa_vsnprintf( str, MAX_DEBUG_MESSAGE_LENGTH, fmtString, args ); va_end( args ); if (ctx) flush_delayed_errors( ctx ); output_if_debug("Mesa warning", str, GL_TRUE); } /** * Report an internal implementation problem. * Prints the message to stderr via fprintf(). * * \param ctx GL context. * \param fmtString problem description string. */ void _mesa_problem( const struct gl_context *ctx, const char *fmtString, ... ) { va_list args; char str[MAX_DEBUG_MESSAGE_LENGTH]; static int numCalls = 0; (void) ctx; if (numCalls < 50) { numCalls++; va_start( args, fmtString ); _mesa_vsnprintf( str, MAX_DEBUG_MESSAGE_LENGTH, fmtString, args ); va_end( args ); fprintf(stderr, "Mesa %s implementation error: %s\n", PACKAGE_VERSION, str); fprintf(stderr, "Please report at " PACKAGE_BUGREPORT "\n"); } } static GLboolean should_output(struct gl_context *ctx, GLenum error, const char *fmtString) { static GLint debug = -1; /* Check debug environment variable only once: */ if (debug == -1) { const char *debugEnv = _mesa_getenv("MESA_DEBUG"); #ifdef DEBUG if (debugEnv && strstr(debugEnv, "silent")) debug = GL_FALSE; else debug = GL_TRUE; #else if (debugEnv) debug = GL_TRUE; else debug = GL_FALSE; #endif } if (debug) { if (ctx->ErrorValue != error || ctx->ErrorDebugFmtString != fmtString) { flush_delayed_errors( ctx ); ctx->ErrorDebugFmtString = fmtString; ctx->ErrorDebugCount = 0; return GL_TRUE; } ctx->ErrorDebugCount++; } return GL_FALSE; } void _mesa_gl_debug(struct gl_context *ctx, GLuint *id, enum mesa_debug_type type, enum mesa_debug_severity severity, const char *fmtString, ...) { char s[MAX_DEBUG_MESSAGE_LENGTH]; int len; va_list args; debug_get_id(id); va_start(args, fmtString); len = _mesa_vsnprintf(s, MAX_DEBUG_MESSAGE_LENGTH, fmtString, args); va_end(args); log_msg(ctx, MESA_DEBUG_SOURCE_API, type, *id, severity, len, s); } /** * Record an OpenGL state error. These usually occur when the user * passes invalid parameters to a GL function. * * If debugging is enabled (either at compile-time via the DEBUG macro, or * run-time via the MESA_DEBUG environment variable), report the error with * _mesa_debug(). * * \param ctx the GL context. * \param error the error value. * \param fmtString printf() style format string, followed by optional args */ void _mesa_error( struct gl_context *ctx, GLenum error, const char *fmtString, ... ) { GLboolean do_output, do_log; /* Ideally this would be set up by the caller, so that we had proper IDs * per different message. */ static GLuint error_msg_id = 0; debug_get_id(&error_msg_id); do_output = should_output(ctx, error, fmtString); do_log = should_log(ctx, MESA_DEBUG_SOURCE_API, MESA_DEBUG_TYPE_ERROR, error_msg_id, MESA_DEBUG_SEVERITY_HIGH); if (do_output || do_log) { char s[MAX_DEBUG_MESSAGE_LENGTH], s2[MAX_DEBUG_MESSAGE_LENGTH]; int len; va_list args; va_start(args, fmtString); len = _mesa_vsnprintf(s, MAX_DEBUG_MESSAGE_LENGTH, fmtString, args); va_end(args); if (len >= MAX_DEBUG_MESSAGE_LENGTH) { /* Too long error message. Whoever calls _mesa_error should use * shorter strings. */ ASSERT(0); return; } len = _mesa_snprintf(s2, MAX_DEBUG_MESSAGE_LENGTH, "%s in %s", _mesa_lookup_enum_by_nr(error), s); if (len >= MAX_DEBUG_MESSAGE_LENGTH) { /* Same as above. */ ASSERT(0); return; } /* Print the error to stderr if needed. */ if (do_output) { output_if_debug("Mesa: User error", s2, GL_TRUE); } /* Log the error via ARB_debug_output if needed.*/ if (do_log) { log_msg(ctx, MESA_DEBUG_SOURCE_API, MESA_DEBUG_TYPE_ERROR, error_msg_id, MESA_DEBUG_SEVERITY_HIGH, len, s2); } } /* Set the GL context error state for glGetError. */ _mesa_record_error(ctx, error); } /** * Report debug information. Print error message to stderr via fprintf(). * No-op if DEBUG mode not enabled. * * \param ctx GL context. * \param fmtString printf()-style format string, followed by optional args. */ void _mesa_debug( const struct gl_context *ctx, const char *fmtString, ... ) { #ifdef DEBUG char s[MAX_DEBUG_MESSAGE_LENGTH]; va_list args; va_start(args, fmtString); _mesa_vsnprintf(s, MAX_DEBUG_MESSAGE_LENGTH, fmtString, args); va_end(args); output_if_debug("Mesa", s, GL_FALSE); #endif /* DEBUG */ (void) ctx; (void) fmtString; } /** * Report debug information from the shader compiler via GL_ARB_debug_output. * * \param ctx GL context. * \param type The namespace to which this message belongs. * \param id The message ID within the given namespace. * \param msg The message to output. Need not be null-terminated. * \param len The length of 'msg'. If negative, 'msg' must be null-terminated. */ void _mesa_shader_debug( struct gl_context *ctx, GLenum type, GLuint *id, const char *msg, int len ) { enum mesa_debug_source source = MESA_DEBUG_SOURCE_SHADER_COMPILER; enum mesa_debug_severity severity = MESA_DEBUG_SEVERITY_HIGH; debug_get_id(id); if (len < 0) len = strlen(msg); /* Truncate the message if necessary. */ if (len >= MAX_DEBUG_MESSAGE_LENGTH) len = MAX_DEBUG_MESSAGE_LENGTH - 1; log_msg(ctx, source, type, *id, severity, len, msg); } /*@}*/