diff options
Diffstat (limited to 'src/gallium/state_trackers/dri/common/dri_context.c')
-rw-r--r-- | src/gallium/state_trackers/dri/common/dri_context.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/dri/common/dri_context.c b/src/gallium/state_trackers/dri/common/dri_context.c new file mode 100644 index 0000000000..34d9a932ea --- /dev/null +++ b/src/gallium/state_trackers/dri/common/dri_context.c @@ -0,0 +1,174 @@ +/************************************************************************** + * + * 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 "dri_st_api.h" + +#include "pipe/p_context.h" +#include "util/u_memory.h" + +GLboolean +dri_create_context(const __GLcontextModes * visual, + __DRIcontext * cPriv, void *sharedContextPrivate) +{ + struct st_api *stapi = dri_get_st_api(); + __DRIscreen *sPriv = cPriv->driScreenPriv; + struct dri_screen *screen = dri_screen(sPriv); + struct dri_context *ctx = NULL; + struct st_context_iface *st_share = NULL; + struct st_visual stvis; + + 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(&stvis, screen, visual); + ctx->st = stapi->create_context(stapi, screen->smapi, &stvis, st_share); + if (ctx->st == NULL) + goto fail; + ctx->st->st_manager_private = (void *) ctx; + + dri_init_extensions(ctx); + + return GL_TRUE; + + fail: + if (ctx && ctx->st) + ctx->st->destroy(ctx->st); + + FREE(ctx); + return 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) +{ + struct st_api *stapi = dri_get_st_api(); + + if (cPriv) { + struct dri_context *ctx = dri_context(cPriv); + + if (--ctx->bind_count == 0) { + if (ctx->st == stapi->get_current(stapi)) { + ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL); + stapi->make_current(stapi, NULL, NULL, NULL); + } + } + } + + return GL_TRUE; +} + +GLboolean +dri_make_current(__DRIcontext * cPriv, + __DRIdrawable * driDrawPriv, + __DRIdrawable * driReadPriv) +{ + struct st_api *stapi = dri_get_st_api(); + + if (cPriv) { + 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; + + old_st = stapi->get_current(stapi); + if (old_st && old_st != ctx->st) + ctx->st->flush(old_st, PIPE_FLUSH_RENDER_CACHE, NULL); + + ++ctx->bind_count; + + 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; + } + + stapi->make_current(stapi, ctx->st, draw->stfb, read->stfb); + } + else { + stapi->make_current(stapi, NULL, NULL, NULL); + } + + return GL_TRUE; +} + +struct dri_context * +dri_get_current(void) +{ + struct st_api *stapi = dri_get_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: */ |