KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
mesa/src/gallium/frontends/dri/dri_context.c

331 lines
10 KiB
C
Raw Blame History

/**************************************************************************
*
* Copyright 2009, VMware, Inc.
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
/*
* Author: Keith Whitwell <keithw@vmware.com>
* Author: Jakob Bornecrantz <wallbraker@gmail.com>
*/
#include "dri_screen.h"
#include "dri_drawable.h"
#include "dri_context.h"
#include "frontend/drm_driver.h"
#include "pipe/p_context.h"
#include "pipe-loader/pipe_loader.h"
#include "state_tracker/st_context.h"
#include "util/u_memory.h"
#include "util/debug.h"
GLboolean
dri_create_context(gl_api api, const struct gl_config * visual,
__DRIcontext * cPriv,
const struct __DriverContextConfig *ctx_config,
unsigned *error,
void *sharedContextPrivate)
{
__DRIscreen *sPriv = cPriv->driScreenPriv;
struct dri_screen *screen = dri_screen(sPriv);
struct st_api *stapi = screen->st_api;
struct dri_context *ctx = NULL;
struct st_context_iface *st_share = NULL;
struct st_context_attribs attribs;
enum st_context_error ctx_err = 0;
unsigned allowed_flags = __DRI_CTX_FLAG_DEBUG |
__DRI_CTX_FLAG_FORWARD_COMPATIBLE;
unsigned allowed_attribs =
__DRIVER_CONTEXT_ATTRIB_PRIORITY |
__DRIVER_CONTEXT_ATTRIB_RELEASE_BEHAVIOR |
__DRIVER_CONTEXT_ATTRIB_NO_ERROR;
const __DRIbackgroundCallableExtension *backgroundCallable =
screen->sPriv->dri2.backgroundCallable;
const struct driOptionCache *optionCache = &screen->dev->option_cache;
if (screen->has_reset_status_query) {
allowed_flags |= __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS;
allowed_attribs |= __DRIVER_CONTEXT_ATTRIB_RESET_STRATEGY;
}
if (ctx_config->flags & ~allowed_flags) {
*error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
goto fail;
}
if (ctx_config->attribute_mask & ~allowed_attribs) {
*error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
goto fail;
}
memset(&attribs, 0, sizeof(attribs));
switch (api) {
case API_OPENGLES:
attribs.profile = ST_PROFILE_OPENGL_ES1;
break;
case API_OPENGLES2:
attribs.profile = ST_PROFILE_OPENGL_ES2;
break;
case API_OPENGL_COMPAT:
case API_OPENGL_CORE:
if (driQueryOptionb(optionCache, "force_compat_profile")) {
attribs.profile = ST_PROFILE_DEFAULT;
} else {
attribs.profile = api == API_OPENGL_COMPAT ? ST_PROFILE_DEFAULT
: ST_PROFILE_OPENGL_CORE;
}
attribs.major = ctx_config->major_version;
attribs.minor = ctx_config->minor_version;
if ((ctx_config->flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0)
attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE;
break;
default:
*error = __DRI_CTX_ERROR_BAD_API;
goto fail;
}
if ((ctx_config->flags & __DRI_CTX_FLAG_DEBUG) != 0)
attribs.flags |= ST_CONTEXT_FLAG_DEBUG;
if (ctx_config->flags & __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS)
attribs.flags |= ST_CONTEXT_FLAG_ROBUST_ACCESS;
if (ctx_config->attribute_mask & __DRIVER_CONTEXT_ATTRIB_RESET_STRATEGY)
if (ctx_config->reset_strategy != __DRI_CTX_RESET_NO_NOTIFICATION)
attribs.flags |= ST_CONTEXT_FLAG_RESET_NOTIFICATION_ENABLED;
if (ctx_config->attribute_mask & __DRIVER_CONTEXT_ATTRIB_NO_ERROR)
attribs.flags |= ctx_config->no_error ? ST_CONTEXT_FLAG_NO_ERROR : 0;
if (ctx_config->attribute_mask & __DRIVER_CONTEXT_ATTRIB_PRIORITY) {
switch (ctx_config->priority) {
case __DRI_CTX_PRIORITY_LOW:
attribs.flags |= ST_CONTEXT_FLAG_LOW_PRIORITY;
break;
case __DRI_CTX_PRIORITY_HIGH:
attribs.flags |= ST_CONTEXT_FLAG_HIGH_PRIORITY;
break;
default:
break;
}
}
if ((ctx_config->attribute_mask & __DRIVER_CONTEXT_ATTRIB_RELEASE_BEHAVIOR)
&& (ctx_config->release_behavior == __DRI_CTX_RELEASE_BEHAVIOR_NONE))
attribs.flags |= ST_CONTEXT_FLAG_RELEASE_NONE;
struct dri_context *share_ctx = NULL;
if (sharedContextPrivate) {
share_ctx = (struct dri_context *)sharedContextPrivate;
st_share = share_ctx->st;
}
ctx = CALLOC_STRUCT(dri_context);
if (ctx == NULL) {
*error = __DRI_CTX_ERROR_NO_MEMORY;
goto fail;
}
cPriv->driverPrivate = ctx;
ctx->cPriv = cPriv;
ctx->sPriv = sPriv;
/* KHR_no_error is likely to crash, overflow memory, etc if an application
* has errors so don't enable it for setuid processes.
*/
if (env_var_as_boolean("MESA_NO_ERROR", false) ||
driQueryOptionb(&screen->dev->option_cache, "mesa_no_error"))
#if !defined(_WIN32)
if (geteuid() == getuid())
#endif
attribs.flags |= ST_CONTEXT_FLAG_NO_ERROR;
attribs.options = screen->options;
dri_fill_st_visual(&attribs.visual, screen, visual);
ctx->st = stapi->create_context(stapi, &screen->base, &attribs, &ctx_err,
st_share);
if (ctx->st == NULL) {
switch (ctx_err) {
case ST_CONTEXT_SUCCESS:
*error = __DRI_CTX_ERROR_SUCCESS;
break;
case ST_CONTEXT_ERROR_NO_MEMORY:
*error = __DRI_CTX_ERROR_NO_MEMORY;
break;
case ST_CONTEXT_ERROR_BAD_API:
*error = __DRI_CTX_ERROR_BAD_API;
break;
case ST_CONTEXT_ERROR_BAD_VERSION:
*error = __DRI_CTX_ERROR_BAD_VERSION;
break;
case ST_CONTEXT_ERROR_BAD_FLAG:
*error = __DRI_CTX_ERROR_BAD_FLAG;
break;
case ST_CONTEXT_ERROR_UNKNOWN_ATTRIBUTE:
*error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
break;
case ST_CONTEXT_ERROR_UNKNOWN_FLAG:
*error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
break;
}
goto fail;
}
ctx->st->st_manager_private = (void *) ctx;
ctx->stapi = stapi;
if (ctx->st->cso_context) {
ctx->pp = pp_init(ctx->st->pipe, screen->pp_enabled, ctx->st->cso_context,
ctx->st);
ctx->hud = hud_create(ctx->st->cso_context, ctx->st,
share_ctx ? share_ctx->hud : NULL);
}
/* Do this last. */
if (ctx->st->start_thread &&
driQueryOptionb(&screen->dev->option_cache, "mesa_glthread")) {
if (backgroundCallable && backgroundCallable->base.version >= 2 &&
backgroundCallable->isThreadSafe) {
if (backgroundCallable->isThreadSafe(cPriv->loaderPrivate))
ctx->st->start_thread(ctx->st);
else
fprintf(stderr, "dri_create_context: glthread isn't thread safe "
"- missing call XInitThreads\n");
} else {
fprintf(stderr, "dri_create_context: requested glthread but driver "
"is missing backgroundCallable V2 extension\n");
}
}
*error = __DRI_CTX_ERROR_SUCCESS;
return GL_TRUE;
fail:
if (ctx && ctx->st)
ctx->st->destroy(ctx->st);
free(ctx);
return GL_FALSE;
}
void
dri_destroy_context(__DRIcontext * cPriv)
{
struct dri_context *ctx = dri_context(cPriv);
if (ctx->hud) {
hud_destroy(ctx->hud, ctx->st->cso_context);
}
if (ctx->pp)
pp_free(ctx->pp);
/* No particular reason to wait for command completion before
* destroying a context, but we flush the context here
* to avoid having to add code elsewhere to cope with flushing a
* partially destroyed context.
*/
ctx->st->flush(ctx->st, 0, NULL, NULL, NULL);
ctx->st->destroy(ctx->st);
free(ctx);
}
/* This is called inside MakeCurrent to unbind the context. */
GLboolean
dri_unbind_context(__DRIcontext * cPriv)
{
/* dri_util.c ensures cPriv is not null */
struct dri_screen *screen = dri_screen(cPriv->driScreenPriv);
struct dri_context *ctx = dri_context(cPriv);
struct st_context_iface *st = ctx->st;
struct st_api *stapi = screen->st_api;
if (st == stapi->get_current(stapi)) {
if (st->thread_finish)
st->thread_finish(st);
/* Record HUD queries for the duration the context was "current". */
if (ctx->hud)
hud_record_only(ctx->hud, st->pipe);
stapi->make_current(stapi, NULL, NULL, NULL);
}
ctx->dPriv = NULL;
ctx->rPriv = NULL;
return GL_TRUE;
}
GLboolean
dri_make_current(__DRIcontext * cPriv,
__DRIdrawable * driDrawPriv,
__DRIdrawable * driReadPriv)
{
/* dri_util.c ensures cPriv is not null */
struct dri_context *ctx = dri_context(cPriv);
struct dri_drawable *draw = dri_drawable(driDrawPriv);
struct dri_drawable *read = dri_drawable(driReadPriv);
if (!draw && !read)
return ctx->stapi->make_current(ctx->stapi, ctx->st, NULL, NULL);
else if (!draw || !read)
return GL_FALSE;
if (ctx->dPriv != driDrawPriv) {
ctx->dPriv = driDrawPriv;
draw->texture_stamp = driDrawPriv->lastStamp - 1;
}
if (ctx->rPriv != driReadPriv) {
ctx->rPriv = driReadPriv;
read->texture_stamp = driReadPriv->lastStamp - 1;
}
ctx->stapi->make_current(ctx->stapi, ctx->st, &draw->base, &read->base);
/* This is ok to call here. If they are already init, it's a no-op. */
if (ctx->pp && draw->textures[ST_ATTACHMENT_BACK_LEFT])
pp_init_fbos(ctx->pp, draw->textures[ST_ATTACHMENT_BACK_LEFT]->width0,
draw->textures[ST_ATTACHMENT_BACK_LEFT]->height0);
return GL_TRUE;
}
struct dri_context *
dri_get_current(__DRIscreen *sPriv)
{
struct dri_screen *screen = dri_screen(sPriv);
struct st_api *stapi = screen->st_api;
struct st_context_iface *st;
st = stapi->get_current(stapi);
return (struct dri_context *) st ? st->st_manager_private : NULL;
}
/* vim: set sw=3 ts=8 sts=3 expandtab: */
Reference in New Issue View Git Blame Copy Permalink