src/mesa/drivers/dri/nouveau/nouveau_context.c

   1 /*
   2  * Copyright (C) 2009-2010 Francisco Jerez.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include "nouveau_driver.h"
  28 #include "nouveau_context.h"
  29 #include "nouveau_bufferobj.h"
  30 #include "nouveau_fbo.h"
  31
  32 #include "main/dd.h"
  33 #include "main/framebuffer.h"
  34 #include "main/light.h"
  35 #include "main/state.h"
  36 #include "drivers/common/meta.h"
  37 #include "drivers/common/driverfuncs.h"
  38 #include "swrast/swrast.h"
  39 #include "swrast/s_context.h"
  40 #include "vbo/vbo.h"
  41 #include "tnl/tnl.h"
  42 #include "tnl/t_context.h"
  43
  44 #define need_GL_EXT_framebuffer_object
  45 #define need_GL_EXT_fog_coord
  46 #define need_GL_EXT_secondary_color
  47
  48 #include "main/remap_helper.h"
  49
  50 static const struct dri_extension nouveau_extensions[] = {
  51         { "GL_ARB_multitexture",        NULL },
  52         { "GL_ARB_texture_env_add",     NULL },
  53         { "GL_ARB_texture_mirrored_repeat", NULL },
  54         { "GL_EXT_fog_coord",           GL_EXT_fog_coord_functions },
  55         { "GL_EXT_framebuffer_blit",    NULL },
  56         { "GL_EXT_framebuffer_object",  GL_EXT_framebuffer_object_functions },
  57         { "GL_EXT_packed_depth_stencil", NULL},
  58         { "GL_EXT_secondary_color",     GL_EXT_secondary_color_functions },
  59         { "GL_EXT_stencil_wrap",        NULL },
  60         { "GL_EXT_texture_env_combine", NULL },
  61         { "GL_EXT_texture_filter_anisotropic", NULL },
  62         { "GL_EXT_texture_lod_bias",    NULL },
  63         { "GL_NV_blend_square",         NULL },
  64         { "GL_NV_texture_env_combine4", NULL },
  65         { NULL,                         NULL }
  66 };
  67
  68 static void
  69 nouveau_channel_flush_notify(struct nouveau_channel *chan)
  70 {
  71         struct nouveau_context *nctx = chan->user_private;
  72         struct gl_context *ctx = &nctx->base;
  73
  74         if (nctx->fallback < SWRAST)
  75                 nouveau_bo_state_emit(ctx);
  76 }
  77
  78 GLboolean
  79 nouveau_context_create(gl_api api,
  80                        const struct gl_config *visual, __DRIcontext *dri_ctx,
  81                        void *share_ctx)
  82 {
  83         __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
  84         struct nouveau_screen *screen = dri_screen->private;
  85         struct nouveau_context *nctx;
  86         struct gl_context *ctx;
  87
  88         ctx = screen->driver->context_create(screen, visual, share_ctx);
  89         if (!ctx)
  90                 return GL_FALSE;
  91
  92         nctx = to_nouveau_context(ctx);
  93         nctx->dri_context = dri_ctx;
  94         dri_ctx->driverPrivate = ctx;
  95
  96         return GL_TRUE;
  97 }
  98
  99 GLboolean
 100 nouveau_context_init(struct gl_context *ctx, struct nouveau_screen *screen,
 101                      const struct gl_config *visual, struct gl_context *share_ctx)
 102 {
 103         struct nouveau_context *nctx = to_nouveau_context(ctx);
 104         struct dd_function_table functions;
 105         int ret;
 106
 107         nctx->screen = screen;
 108         nctx->fallback = HWTNL;
 109
 110         /* Initialize the function pointers. */
 111         _mesa_init_driver_functions(&functions);
 112         nouveau_driver_functions_init(&functions);
 113         nouveau_bufferobj_functions_init(&functions);
 114         nouveau_texture_functions_init(&functions);
 115         nouveau_fbo_functions_init(&functions);
 116
 117         /* Initialize the mesa context. */
 118         _mesa_initialize_context(ctx, visual, share_ctx, &functions, NULL);
 119
 120         nouveau_state_init(ctx);
 121         nouveau_bo_state_init(ctx);
 122         nouveau_scratch_init(ctx);
 123         _mesa_meta_init(ctx);
 124         _swrast_CreateContext(ctx);
 125         _vbo_CreateContext(ctx);
 126         _tnl_CreateContext(ctx);
 127         nouveau_span_functions_init(ctx);
 128         _mesa_allow_light_in_model(ctx, GL_FALSE);
 129
 130         /* Allocate a hardware channel. */
 131         ret = nouveau_channel_alloc(context_dev(ctx), 0xbeef0201, 0xbeef0202,
 132                                     512*1024, &nctx->hw.chan);
 133         if (ret) {
 134                 nouveau_error("Error initializing the FIFO.\n");
 135                 return GL_FALSE;
 136         }
 137
 138         nctx->hw.chan->flush_notify = nouveau_channel_flush_notify;
 139         nctx->hw.chan->user_private = nctx;
 140
 141         /* Enable any supported extensions. */
 142         driInitExtensions(ctx, nouveau_extensions, GL_TRUE);
 143
 144         return GL_TRUE;
 145 }
 146
 147 void
 148 nouveau_context_deinit(struct gl_context *ctx)
 149 {
 150         struct nouveau_context *nctx = to_nouveau_context(ctx);
 151
 152         if (TNL_CONTEXT(ctx))
 153                 _tnl_DestroyContext(ctx);
 154
 155         if (vbo_context(ctx))
 156                 _vbo_DestroyContext(ctx);
 157
 158         if (SWRAST_CONTEXT(ctx))
 159                 _swrast_DestroyContext(ctx);
 160
 161         if (ctx->Meta)
 162                 _mesa_meta_free(ctx);
 163
 164         if (nctx->hw.chan)
 165                 nouveau_channel_free(&nctx->hw.chan);
 166
 167         nouveau_scratch_destroy(ctx);
 168         nouveau_bo_state_destroy(ctx);
 169         _mesa_free_context_data(ctx);
 170 }
 171
 172 void
 173 nouveau_context_destroy(__DRIcontext *dri_ctx)
 174 {
 175         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 176         struct gl_context *ctx = &nctx->base;
 177
 178         context_drv(ctx)->context_destroy(ctx);
 179 }
 180
 181 void
 182 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 183 {
 184         struct gl_context *ctx = dri_ctx->driverPrivate;
 185         struct nouveau_context *nctx = to_nouveau_context(ctx);
 186         __DRIscreen *screen = dri_ctx->driScreenPriv;
 187         struct gl_framebuffer *fb = draw->driverPrivate;
 188         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 189         unsigned int attachments[10];
 190         __DRIbuffer *buffers = NULL;
 191         int i = 0, count, ret;
 192
 193         if (draw->lastStamp == *draw->pStamp)
 194                 return;
 195         draw->lastStamp = *draw->pStamp;
 196
 197         if (nfb->need_front)
 198                 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 199         if (fb->Visual.doubleBufferMode)
 200                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 201         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 202                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 203         else if (fb->Visual.haveDepthBuffer)
 204                 attachments[i++] = __DRI_BUFFER_DEPTH;
 205         else if (fb->Visual.haveStencilBuffer)
 206                 attachments[i++] = __DRI_BUFFER_STENCIL;
 207
 208         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 209                                                      attachments, i, &count,
 210                                                      draw->loaderPrivate);
 211         if (buffers == NULL)
 212                 return;
 213
 214         for (i = 0; i < count; i++) {
 215                 struct gl_renderbuffer *rb;
 216                 struct nouveau_surface *s;
 217                 uint32_t old_name;
 218                 int index;
 219
 220                 switch (buffers[i].attachment) {
 221                 case __DRI_BUFFER_FRONT_LEFT:
 222                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 223                         index = BUFFER_FRONT_LEFT;
 224                         break;
 225                 case __DRI_BUFFER_BACK_LEFT:
 226                         index = BUFFER_BACK_LEFT;
 227                         break;
 228                 case __DRI_BUFFER_DEPTH:
 229                 case __DRI_BUFFER_DEPTH_STENCIL:
 230                         index = BUFFER_DEPTH;
 231                         break;
 232                 case __DRI_BUFFER_STENCIL:
 233                         index = BUFFER_STENCIL;
 234                         break;
 235                 default:
 236                         assert(0);
 237                 }
 238
 239                 rb = fb->Attachment[index].Renderbuffer;
 240                 s = &to_nouveau_renderbuffer(rb)->surface;
 241
 242                 s->width = draw->w;
 243                 s->height = draw->h;
 244                 s->pitch = buffers[i].pitch;
 245                 s->cpp = buffers[i].cpp;
 246
 247                 if (index == BUFFER_DEPTH && s->bo) {
 248                         ret = nouveau_bo_handle_get(s->bo, &old_name);
 249                         /*
 250                          * Disable fast Z clears in the next frame, the
 251                          * depth buffer contents are undefined.
 252                          */
 253                         if (!ret && old_name != buffers[i].name)
 254                                 nctx->hierz.clear_seq = 0;
 255                 }
 256
 257                 nouveau_bo_ref(NULL, &s->bo);
 258                 ret = nouveau_bo_handle_ref(context_dev(ctx),
 259                                             buffers[i].name, &s->bo);
 260                 assert(!ret);
 261         }
 262
 263         _mesa_resize_framebuffer(NULL, fb, draw->w, draw->h);
 264 }
 265
 266 static void
 267 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 268                    int *stamp)
 269 {
 270         struct gl_context *ctx = dri_ctx->driverPrivate;
 271         struct gl_framebuffer *fb = draw->driverPrivate;
 272
 273         *stamp = *draw->pStamp;
 274
 275         nouveau_update_renderbuffers(dri_ctx, draw);
 276         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 277
 278         /* Clean up references to the old framebuffer objects. */
 279         context_dirty(ctx, FRAMEBUFFER);
 280         context_bctx(ctx, FRAMEBUFFER);
 281         FIRE_RING(context_chan(ctx));
 282 }
 283
 284 GLboolean
 285 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 286                              __DRIdrawable *dri_read)
 287 {
 288         if (dri_ctx) {
 289                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 290                 struct gl_context *ctx = &nctx->base;
 291
 292                 /* Ask the X server for new renderbuffers. */
 293                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 294                         update_framebuffer(dri_ctx, dri_draw,
 295                                            &dri_ctx->dri2.draw_stamp);
 296
 297                 if (dri_draw != dri_read &&
 298                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 299                         update_framebuffer(dri_ctx, dri_read,
 300                                            &dri_ctx->dri2.read_stamp);
 301
 302                 /* Pass it down to mesa. */
 303                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 304                                    dri_read->driverPrivate);
 305                 _mesa_update_state(ctx);
 306
 307         } else {
 308                 _mesa_make_current(NULL, NULL, NULL);
 309         }
 310
 311         return GL_TRUE;
 312 }
 313
 314 GLboolean
 315 nouveau_context_unbind(__DRIcontext *dri_ctx)
 316 {
 317         /* Unset current context and dispath table */
 318         _mesa_make_current(NULL, NULL, NULL);
 319
 320         return GL_TRUE;
 321 }
 322
 323 void
 324 nouveau_fallback(struct gl_context *ctx, enum nouveau_fallback mode)
 325 {
 326         struct nouveau_context *nctx = to_nouveau_context(ctx);
 327
 328         nctx->fallback = MAX2(HWTNL, mode);
 329
 330         if (mode < SWRAST) {
 331                 nouveau_state_emit(ctx);
 332                 nouveau_bo_state_emit(ctx);
 333         } else {
 334                 FIRE_RING(context_chan(ctx));
 335         }
 336 }
 337
 338 static void
 339 validate_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 340                      int *stamp)
 341 {
 342         struct gl_framebuffer *fb = draw->driverPrivate;
 343         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 344         GLboolean need_front =
 345                 (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT ||
 346                  fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT);
 347
 348         if (nfb->need_front != need_front) {
 349                 nfb->need_front = need_front;
 350                 dri2InvalidateDrawable(draw);
 351         }
 352
 353         if (*draw->pStamp != *stamp)
 354                 update_framebuffer(dri_ctx, draw, stamp);
 355 }
 356
 357 void
 358 nouveau_validate_framebuffer(struct gl_context *ctx)
 359 {
 360         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 361         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 362         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 363
 364         if (ctx->DrawBuffer->Name == 0)
 365                 validate_framebuffer(dri_ctx, dri_draw,
 366                                      &dri_ctx->dri2.draw_stamp);
 367
 368         if (ctx->ReadBuffer->Name == 0)
 369                 validate_framebuffer(dri_ctx, dri_read,
 370                                      &dri_ctx->dri2.read_stamp);
 371
 372         if (ctx->NewState & _NEW_BUFFERS)
 373                 _mesa_update_state(ctx);
 374 }