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/*
* 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;
}
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