dri_context.c revision 4b722bf9fde668dff1c2b55b34eb3f86c78f43fb
1/************************************************************************** 2 * 3 * Copyright 2009, VMware, Inc. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27/* 28 * Author: Keith Whitwell <keithw@vmware.com> 29 * Author: Jakob Bornecrantz <wallbraker@gmail.com> 30 */ 31 32#include "utils.h" 33 34#include "dri_screen.h" 35#include "dri_drawable.h" 36#include "dri_context.h" 37#include "dri_st_api.h" 38 39#include "pipe/p_context.h" 40#include "state_tracker/st_context.h" 41 42static void 43dri_init_extensions(struct dri_context *ctx) 44{ 45 struct st_context *st = (struct st_context *) ctx->st; 46 47 /* New extensions should be added in mesa/state_tracker/st_extensions.c 48 * and not in this file. */ 49 driInitExtensions(st->ctx, NULL, GL_FALSE); 50} 51 52GLboolean 53dri_create_context(const __GLcontextModes * visual, 54 __DRIcontext * cPriv, void *sharedContextPrivate) 55{ 56 struct st_api *stapi = dri_get_st_api(); 57 __DRIscreen *sPriv = cPriv->driScreenPriv; 58 struct dri_screen *screen = dri_screen(sPriv); 59 struct dri_context *ctx = NULL; 60 struct st_context_iface *st_share = NULL; 61 struct st_visual stvis; 62 63 if (sharedContextPrivate) { 64 st_share = ((struct dri_context *)sharedContextPrivate)->st; 65 } 66 67 ctx = CALLOC_STRUCT(dri_context); 68 if (ctx == NULL) 69 goto fail; 70 71 cPriv->driverPrivate = ctx; 72 ctx->cPriv = cPriv; 73 ctx->sPriv = sPriv; 74 ctx->lock = screen->drmLock; 75 76 driParseConfigFiles(&ctx->optionCache, 77 &screen->optionCache, sPriv->myNum, "dri"); 78 79 dri_fill_st_visual(&stvis, screen, visual); 80 ctx->st = stapi->create_context(stapi, screen->smapi, &stvis, st_share); 81 if (ctx->st == NULL) 82 goto fail; 83 ctx->st->st_manager_private = (void *) ctx; 84 85 dri_init_extensions(ctx); 86 87 return GL_TRUE; 88 89 fail: 90 if (ctx && ctx->st) 91 ctx->st->destroy(ctx->st); 92 93 FREE(ctx); 94 return FALSE; 95} 96 97void 98dri_destroy_context(__DRIcontext * cPriv) 99{ 100 struct dri_context *ctx = dri_context(cPriv); 101 102 /* note: we are freeing values and nothing more because 103 * driParseConfigFiles allocated values only - the rest 104 * is owned by screen optionCache. 105 */ 106 FREE(ctx->optionCache.values); 107 108 /* No particular reason to wait for command completion before 109 * destroying a context, but it is probably worthwhile flushing it 110 * to avoid having to add code elsewhere to cope with flushing a 111 * partially destroyed context. 112 */ 113 ctx->st->flush(ctx->st, 0, NULL); 114 ctx->st->destroy(ctx->st); 115 116 FREE(ctx); 117} 118 119GLboolean 120dri_unbind_context(__DRIcontext * cPriv) 121{ 122 struct st_api *stapi = dri_get_st_api(); 123 124 if (cPriv) { 125 struct dri_context *ctx = dri_context(cPriv); 126 127 if (--ctx->bind_count == 0) { 128 if (ctx->st == stapi->get_current(stapi)) { 129 ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL); 130 stapi->make_current(stapi, NULL, NULL, NULL); 131 } 132 } 133 } 134 135 return GL_TRUE; 136} 137 138GLboolean 139dri_make_current(__DRIcontext * cPriv, 140 __DRIdrawable * driDrawPriv, 141 __DRIdrawable * driReadPriv) 142{ 143 struct st_api *stapi = dri_get_st_api(); 144 145 if (cPriv) { 146 struct dri_context *ctx = dri_context(cPriv); 147 struct dri_drawable *draw = dri_drawable(driDrawPriv); 148 struct dri_drawable *read = dri_drawable(driReadPriv); 149 struct st_context_iface *old_st; 150 151 old_st = stapi->get_current(stapi); 152 if (old_st && old_st != ctx->st) 153 ctx->st->flush(old_st, PIPE_FLUSH_RENDER_CACHE, NULL); 154 155 ++ctx->bind_count; 156 157 if (ctx->dPriv != driDrawPriv) { 158 ctx->dPriv = driDrawPriv; 159 draw->texture_stamp = driDrawPriv->lastStamp - 1; 160 } 161 if (ctx->rPriv != driReadPriv) { 162 ctx->rPriv = driReadPriv; 163 read->texture_stamp = driReadPriv->lastStamp - 1; 164 } 165 166 stapi->make_current(stapi, ctx->st, draw->stfb, read->stfb); 167 } 168 else { 169 stapi->make_current(stapi, NULL, NULL, NULL); 170 } 171 172 return GL_TRUE; 173} 174 175struct dri_context * 176dri_get_current(void) 177{ 178 struct st_api *stapi = dri_get_st_api(); 179 struct st_context_iface *st; 180 181 st = stapi->get_current(stapi); 182 183 return (struct dri_context *) (st) ? st->st_manager_private : NULL; 184} 185 186/* vim: set sw=3 ts=8 sts=3 expandtab: */ 187