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/**************************************************************************
*
* 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 "utils.h"
#include "dri_screen.h"
#include "dri_drawable.h"
#include "dri_context.h"
#include "pipe/p_context.h"
#include "state_tracker/st_context.h"
static void
dri_init_extensions(struct dri_context *ctx)
{
struct st_context *st = (struct st_context *) ctx->st;
/* New extensions should be added in mesa/state_tracker/st_extensions.c
* and not in this file. */
driInitExtensions(st->ctx, NULL, GL_FALSE);
}
GLboolean
dri_create_context(gl_api api, const struct gl_config * visual,
__DRIcontext * cPriv, 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;
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;
default:
attribs.profile = ST_PROFILE_DEFAULT;
break;
}
if (sharedContextPrivate) {
st_share = ((struct dri_context *)sharedContextPrivate)->st;
}
ctx = CALLOC_STRUCT(dri_context);
if (ctx == NULL)
goto fail;
cPriv->driverPrivate = ctx;
ctx->cPriv = cPriv;
ctx->sPriv = sPriv;
ctx->lock = screen->drmLock;
driParseConfigFiles(&ctx->optionCache,
&screen->optionCache, sPriv->myNum, "dri");
dri_fill_st_visual(&attribs.visual, screen, visual);
ctx->st = stapi->create_context(stapi, &screen->base, &attribs, st_share);
if (ctx->st == NULL)
goto fail;
ctx->st->st_manager_private = (void *) ctx;
ctx->stapi = stapi;
/*
* libmesagallium.a that this state tracker will be linked to expects
* OpenGL's _glapi_table. That is, it expects libGL.so instead of
* libGLESv1_CM.so or libGLESv2.so. As there is no clean way to know the
* shared library the app links to, use the api as a simple check.
* It might be as well to simply remove this function call though.
*/
if (api == API_OPENGL)
dri_init_extensions(ctx);
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);
/* note: we are freeing values and nothing more because
* driParseConfigFiles allocated values only - the rest
* is owned by screen optionCache.
*/
FREE(ctx->optionCache.values);
/* No particular reason to wait for command completion before
* destroying a context, but it is probably worthwhile flushing it
* to avoid having to add code elsewhere to cope with flushing a
* partially destroyed context.
*/
ctx->st->flush(ctx->st, 0, NULL);
ctx->st->destroy(ctx->st);
FREE(ctx);
}
GLboolean
dri_unbind_context(__DRIcontext * cPriv)
{
/* dri_util.c ensures cPriv is not null */
struct dri_context *ctx = dri_context(cPriv);
if (--ctx->bind_count == 0) {
if (ctx->st == ctx->stapi->get_current(ctx->stapi)) {
ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
ctx->stapi->make_current(ctx->stapi, NULL, NULL, 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);
struct st_context_iface *old_st = ctx->stapi->get_current(ctx->stapi);
if (old_st && old_st != ctx->st)
old_st->flush(old_st, PIPE_FLUSH_RENDER_CACHE, NULL);
++ctx->bind_count;
if (!driDrawPriv && !driReadPriv)
return ctx->stapi->make_current(ctx->stapi, ctx->st, NULL, NULL);
else if (!driDrawPriv || !driReadPriv)
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);
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: */
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