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Diffstat (limited to 'src/mesa/main/robustness.c')
| -rw-r--r-- | src/mesa/main/robustness.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/mesa/main/robustness.c b/src/mesa/main/robustness.c new file mode 100644 index 00000000000..f54d9f3eb1e --- /dev/null +++ b/src/mesa/main/robustness.c @@ -0,0 +1,165 @@ +/* + * Copyright © 2016 Intel Corporation + * + * 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 (including the next + * paragraph) 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 <stdbool.h> +#include "context.h" +#include "debug_output.h" +#include "get.h" +#include "mtypes.h" +#include "macros.h" +#include "main/dispatch.h" /* for _gloffset_COUNT */ + +static void GLAPIENTRY +_context_lost_GetSynciv(GLsync sync, GLenum pname, GLsizei bufSize, + GLsizei *length, GLint *values) +{ + GET_CURRENT_CONTEXT(ctx); + if (ctx) + _mesa_error(ctx, GL_CONTEXT_LOST, "GetSynciv(invalid call)"); + + if (pname == GL_SYNC_STATUS && bufSize >= 1) + *values = GL_SIGNALED; +} + +static void GLAPIENTRY +_context_lost_GetQueryObjectuiv(GLuint id, GLenum pname, GLuint *params) +{ + GET_CURRENT_CONTEXT(ctx); + if (ctx) + _mesa_error(ctx, GL_CONTEXT_LOST, "GetQueryObjectuiv(context lost)"); + + if (pname == GL_QUERY_RESULT_AVAILABLE) + *params = GL_TRUE; +} + +static int +context_lost_nop_handler(void) +{ + GET_CURRENT_CONTEXT(ctx); + if (ctx) + _mesa_error(ctx, GL_CONTEXT_LOST, "context lost"); + + return 0; +} + +void +_mesa_set_context_lost_dispatch(struct gl_context *ctx) +{ + if (ctx->ContextLost == NULL) { + int numEntries = MAX2(_glapi_get_dispatch_table_size(), _gloffset_COUNT); + + ctx->ContextLost = malloc(numEntries * sizeof(_glapi_proc)); + if (!ctx->ContextLost) + return; + + _glapi_proc *entry = (_glapi_proc *) ctx->ContextLost; + unsigned i; + for (i = 0; i < numEntries; i++) + entry[i] = (_glapi_proc) context_lost_nop_handler; + + /* The ARB_robustness specification says: + * + * "* GetError and GetGraphicsResetStatus behave normally following a + * graphics reset, so that the application can determine a reset + * has occurred, and when it is safe to destroy and recreate the + * context. + * + * * Any commands which might cause a polling application to block + * indefinitely will generate a CONTEXT_LOST error, but will also + * return a value indicating completion to the application. Such + * commands include: + * + * + GetSynciv with <pname> SYNC_STATUS ignores the other + * parameters and returns SIGNALED in <values>. + * + * + GetQueryObjectuiv with <pname> QUERY_RESULT_AVAILABLE + * ignores the other parameters and returns TRUE in <params>." + */ + SET_GetError(ctx->ContextLost, _mesa_GetError); + SET_GetGraphicsResetStatusARB(ctx->ContextLost, _mesa_GetGraphicsResetStatusARB); + SET_GetSynciv(ctx->ContextLost, _context_lost_GetSynciv); + SET_GetQueryObjectuiv(ctx->ContextLost, _context_lost_GetQueryObjectuiv); + } + + ctx->CurrentDispatch = ctx->ContextLost; + _glapi_set_dispatch(ctx->CurrentDispatch); +} + +/** + * Returns an error code specified by GL_ARB_robustness, or GL_NO_ERROR. + * \return current context status + */ +GLenum GLAPIENTRY +_mesa_GetGraphicsResetStatusARB( void ) +{ + GET_CURRENT_CONTEXT(ctx); + GLenum status = GL_NO_ERROR; + + /* The ARB_robustness specification says: + * + * "If the reset notification behavior is NO_RESET_NOTIFICATION_ARB, + * then the implementation will never deliver notification of reset + * events, and GetGraphicsResetStatusARB will always return NO_ERROR." + */ + if (ctx->Const.ResetStrategy == GL_NO_RESET_NOTIFICATION_ARB) { + if (MESA_VERBOSE & VERBOSE_API) + _mesa_debug(ctx, + "glGetGraphicsResetStatusARB always returns GL_NO_ERROR " + "because reset notifictation was not requested at context " + "creation.\n"); + + return GL_NO_ERROR; + } + + if (ctx->Driver.GetGraphicsResetStatus) { + /* Query the reset status of this context from the driver core. + */ + status = ctx->Driver.GetGraphicsResetStatus(ctx); + + mtx_lock(&ctx->Shared->Mutex); + + /* If this context has not been affected by a GPU reset, check to see if + * some other context in the share group has been affected by a reset. + * If another context saw a reset but this context did not, assume that + * this context was not guilty. + */ + if (status != GL_NO_ERROR) { + ctx->Shared->ShareGroupReset = true; + } else if (ctx->Shared->ShareGroupReset && !ctx->ShareGroupReset) { + status = GL_INNOCENT_CONTEXT_RESET_ARB; + } + + ctx->ShareGroupReset = ctx->Shared->ShareGroupReset; + mtx_unlock(&ctx->Shared->Mutex); + } + + if (status != GL_NO_ERROR) + _mesa_set_context_lost_dispatch(ctx); + + if (!ctx->Driver.GetGraphicsResetStatus && (MESA_VERBOSE & VERBOSE_API)) + _mesa_debug(ctx, + "glGetGraphicsResetStatusARB always returns GL_NO_ERROR " + "because the driver doesn't track reset status.\n"); + + return status; +} |