| /* |
| * 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->CurrentServerDispatch = ctx->ContextLost; |
| _glapi_set_dispatch(ctx->CurrentServerDispatch); |
| } |
| |
| /** |
| * 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); |
| |
| simple_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; |
| ctx->Shared->DisjointOperation = true; |
| } else if (ctx->Shared->ShareGroupReset && !ctx->ShareGroupReset) { |
| status = GL_INNOCENT_CONTEXT_RESET_ARB; |
| } |
| |
| ctx->ShareGroupReset = ctx->Shared->ShareGroupReset; |
| simple_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; |
| } |