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 <stdbool.h>
  28 #include "nouveau_driver.h"
  29 #include "nouveau_context.h"
  30 #include "nouveau_bufferobj.h"
  31 #include "nouveau_fbo.h"
  32 #include "nv_object.xml.h"
  33
  34 #include "main/api_exec.h"
  35 #include "main/dd.h"
  36 #include "main/framebuffer.h"
  37 #include "main/fbobject.h"
  38 #include "main/light.h"
  39 #include "main/state.h"
  40 #include "main/version.h"
  41 #include "main/vtxfmt.h"
  42 #include "drivers/common/meta.h"
  43 #include "drivers/common/driverfuncs.h"
  44 #include "swrast/swrast.h"
  45 #include "swrast/s_context.h"
  46 #include "vbo/vbo.h"
  47 #include "tnl/tnl.h"
  48 #include "tnl/t_context.h"
  49
  50 GLboolean
  51 nouveau_context_create(gl_api api,
  52                        const struct gl_config *visual, __DRIcontext *dri_ctx,
  53                        unsigned major_version,
  54                        unsigned minor_version,
  55                        uint32_t flags,
  56                        bool notify_reset,
  57                        unsigned *error,
  58                        void *share_ctx)
  59 {
  60         __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
  61         struct nouveau_screen *screen = dri_screen->driverPrivate;
  62         struct nouveau_context *nctx;
  63         struct gl_context *ctx;
  64
  65         if (flags & ~__DRI_CTX_FLAG_DEBUG) {
  66                 *error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
  67                 return false;
  68         }
  69
  70         if (notify_reset) {
  71                 *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
  72                 return false;
  73         }
  74
  75         ctx = screen->driver->context_create(screen, api, visual, share_ctx);
  76         if (!ctx) {
  77                 *error = __DRI_CTX_ERROR_NO_MEMORY;
  78                 return GL_FALSE;
  79         }
  80
  81         driContextSetFlags(ctx, flags);
  82
  83         nctx = to_nouveau_context(ctx);
  84         nctx->dri_context = dri_ctx;
  85         dri_ctx->driverPrivate = ctx;
  86
  87         _mesa_compute_version(ctx);
  88         if (ctx->Version < major_version * 10 + minor_version) {
  89            nouveau_context_destroy(dri_ctx);
  90            *error = __DRI_CTX_ERROR_BAD_VERSION;
  91            return GL_FALSE;
  92         }
  93
  94         /* Exec table initialization requires the version to be computed */
  95         _mesa_initialize_dispatch_tables(ctx);
  96         _mesa_initialize_vbo_vtxfmt(ctx);
  97
  98         if (nouveau_bo_new(context_dev(ctx), NOUVEAU_BO_VRAM, 0, 4096,
  99                            NULL, &nctx->fence)) {
 100                 nouveau_context_destroy(dri_ctx);
 101                 *error = __DRI_CTX_ERROR_NO_MEMORY;
 102                 return GL_FALSE;
 103         }
 104
 105         *error = __DRI_CTX_ERROR_SUCCESS;
 106         return GL_TRUE;
 107 }
 108
 109 GLboolean
 110 nouveau_context_init(struct gl_context *ctx, gl_api api,
 111                      struct nouveau_screen *screen,
 112                      const struct gl_config *visual, struct gl_context *share_ctx)
 113 {
 114         struct nouveau_context *nctx = to_nouveau_context(ctx);
 115         struct dd_function_table functions;
 116         int ret;
 117
 118         nctx->screen = screen;
 119         nctx->fallback = HWTNL;
 120
 121         /* Initialize the function pointers. */
 122         _mesa_init_driver_functions(&functions);
 123         nouveau_driver_functions_init(&functions);
 124         nouveau_bufferobj_functions_init(&functions);
 125         nouveau_texture_functions_init(&functions);
 126         nouveau_fbo_functions_init(&functions);
 127
 128         /* Initialize the mesa context. */
 129         if (!_mesa_initialize_context(ctx, api, visual, share_ctx, &functions))
 130                 return GL_FALSE;
 131
 132         nouveau_state_init(ctx);
 133         nouveau_scratch_init(ctx);
 134         _mesa_meta_init(ctx);
 135         _swrast_CreateContext(ctx);
 136         _vbo_CreateContext(ctx);
 137         _tnl_CreateContext(ctx);
 138         nouveau_span_functions_init(ctx);
 139         _mesa_allow_light_in_model(ctx, GL_FALSE);
 140
 141         /* Allocate a hardware channel. */
 142         ret = nouveau_object_new(&context_dev(ctx)->object, 0xbeef0000,
 143                                  NOUVEAU_FIFO_CHANNEL_CLASS,
 144                                  &(struct nv04_fifo){
 145                                         .vram = 0xbeef0201,
 146                                         .gart = 0xbeef0202
 147                                  }, sizeof(struct nv04_fifo), &nctx->hw.chan);
 148         if (ret) {
 149                 nouveau_error("Error initializing the FIFO.\n");
 150                 return GL_FALSE;
 151         }
 152
 153         /* Allocate a client (thread data) */
 154         ret = nouveau_client_new(context_dev(ctx), &nctx->hw.client);
 155         if (ret) {
 156                 nouveau_error("Error creating thread data\n");
 157                 return GL_FALSE;
 158         }
 159
 160         /* Allocate a push buffer */
 161         ret = nouveau_pushbuf_new(nctx->hw.client, nctx->hw.chan, 4,
 162                                   512 * 1024, true, &nctx->hw.pushbuf);
 163         if (ret) {
 164                 nouveau_error("Error allocating DMA push buffer\n");
 165                 return GL_FALSE;
 166         }
 167
 168         /* Allocate buffer context */
 169         ret = nouveau_bufctx_new(nctx->hw.client, 16, &nctx->hw.bufctx);
 170         if (ret) {
 171                 nouveau_error("Error allocating buffer context\n");
 172                 return GL_FALSE;
 173         }
 174
 175         nctx->hw.pushbuf->user_priv = nctx->hw.bufctx;
 176
 177         /* Allocate NULL object */
 178         ret = nouveau_object_new(nctx->hw.chan, 0x00000000, NV01_NULL_CLASS,
 179                                  NULL, 0, &nctx->hw.null);
 180         if (ret) {
 181                 nouveau_error("Error allocating NULL object\n");
 182                 return GL_FALSE;
 183         }
 184
 185         /* Enable any supported extensions. */
 186         ctx->Extensions.EXT_blend_color = true;
 187         ctx->Extensions.EXT_blend_minmax = true;
 188         ctx->Extensions.EXT_texture_filter_anisotropic = true;
 189         ctx->Extensions.NV_texture_env_combine4 = true;
 190         ctx->Const.MaxColorAttachments = 1;
 191
 192         return GL_TRUE;
 193 }
 194
 195 void
 196 nouveau_context_deinit(struct gl_context *ctx)
 197 {
 198         struct nouveau_context *nctx = to_nouveau_context(ctx);
 199
 200         if (TNL_CONTEXT(ctx))
 201                 _tnl_DestroyContext(ctx);
 202
 203         if (vbo_context(ctx))
 204                 _vbo_DestroyContext(ctx);
 205
 206         if (SWRAST_CONTEXT(ctx))
 207                 _swrast_DestroyContext(ctx);
 208
 209         if (ctx->Meta)
 210                 _mesa_meta_free(ctx);
 211
 212         nouveau_bufctx_del(&nctx->hw.bufctx);
 213         nouveau_pushbuf_del(&nctx->hw.pushbuf);
 214         nouveau_client_del(&nctx->hw.client);
 215         nouveau_object_del(&nctx->hw.chan);
 216
 217         nouveau_scratch_destroy(ctx);
 218         _mesa_free_context_data(ctx);
 219 }
 220
 221 void
 222 nouveau_context_destroy(__DRIcontext *dri_ctx)
 223 {
 224         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 225         struct gl_context *ctx = &nctx->base;
 226
 227         nouveau_bo_ref(NULL, &nctx->fence);
 228         context_drv(ctx)->context_destroy(ctx);
 229 }
 230
 231 void
 232 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 233 {
 234         struct gl_context *ctx = dri_ctx->driverPrivate;
 235         struct nouveau_context *nctx = to_nouveau_context(ctx);
 236         __DRIscreen *screen = dri_ctx->driScreenPriv;
 237         struct gl_framebuffer *fb = draw->driverPrivate;
 238         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 239         unsigned int attachments[10];
 240         __DRIbuffer *buffers = NULL;
 241         int i = 0, count, ret;
 242
 243         if (draw->lastStamp == draw->dri2.stamp)
 244                 return;
 245         draw->lastStamp = draw->dri2.stamp;
 246
 247         if (nfb->need_front)
 248                 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 249         if (fb->Visual.doubleBufferMode)
 250                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 251         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 252                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 253         else if (fb->Visual.haveDepthBuffer)
 254                 attachments[i++] = __DRI_BUFFER_DEPTH;
 255         else if (fb->Visual.haveStencilBuffer)
 256                 attachments[i++] = __DRI_BUFFER_STENCIL;
 257
 258         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 259                                                      attachments, i, &count,
 260                                                      draw->loaderPrivate);
 261         if (buffers == NULL)
 262                 return;
 263
 264         for (i = 0; i < count; i++) {
 265                 struct gl_renderbuffer *rb;
 266                 struct nouveau_surface *s;
 267                 uint32_t old_name;
 268                 int index;
 269
 270                 switch (buffers[i].attachment) {
 271                 case __DRI_BUFFER_FRONT_LEFT:
 272                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 273                         index = BUFFER_FRONT_LEFT;
 274                         break;
 275                 case __DRI_BUFFER_BACK_LEFT:
 276                         index = BUFFER_BACK_LEFT;
 277                         break;
 278                 case __DRI_BUFFER_DEPTH:
 279                 case __DRI_BUFFER_DEPTH_STENCIL:
 280                         index = BUFFER_DEPTH;
 281                         break;
 282                 case __DRI_BUFFER_STENCIL:
 283                         index = BUFFER_STENCIL;
 284                         break;
 285                 default:
 286                         assert(0);
 287                 }
 288
 289                 rb = fb->Attachment[index].Renderbuffer;
 290                 s = &to_nouveau_renderbuffer(rb)->surface;
 291
 292                 s->width = draw->w;
 293                 s->height = draw->h;
 294                 s->pitch = buffers[i].pitch;
 295                 s->cpp = buffers[i].cpp;
 296
 297                 if (index == BUFFER_DEPTH && s->bo) {
 298                         ret = nouveau_bo_name_get(s->bo, &old_name);
 299                         /*
 300                          * Disable fast Z clears in the next frame, the
 301                          * depth buffer contents are undefined.
 302                          */
 303                         if (!ret && old_name != buffers[i].name)
 304                                 nctx->hierz.clear_seq = 0;
 305                 }
 306
 307                 nouveau_bo_ref(NULL, &s->bo);
 308                 ret = nouveau_bo_name_ref(context_dev(ctx),
 309                                           buffers[i].name, &s->bo);
 310                 assert(!ret);
 311         }
 312
 313         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 314 }
 315
 316 static void
 317 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 318                    int *stamp)
 319 {
 320         struct gl_context *ctx = dri_ctx->driverPrivate;
 321         struct gl_framebuffer *fb = draw->driverPrivate;
 322
 323         *stamp = draw->dri2.stamp;
 324
 325         nouveau_update_renderbuffers(dri_ctx, draw);
 326         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 327
 328         /* Clean up references to the old framebuffer objects. */
 329         context_dirty(ctx, FRAMEBUFFER);
 330         nouveau_bufctx_reset(to_nouveau_context(ctx)->hw.bufctx, BUFCTX_FB);
 331         PUSH_KICK(context_push(ctx));
 332 }
 333
 334 GLboolean
 335 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 336                              __DRIdrawable *dri_read)
 337 {
 338         if (dri_ctx) {
 339                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 340                 struct gl_context *ctx = &nctx->base;
 341
 342                 /* Ask the X server for new renderbuffers. */
 343                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 344                         update_framebuffer(dri_ctx, dri_draw,
 345                                            &dri_ctx->dri2.draw_stamp);
 346
 347                 if (dri_draw != dri_read &&
 348                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 349                         update_framebuffer(dri_ctx, dri_read,
 350                                            &dri_ctx->dri2.read_stamp);
 351
 352                 /* Pass it down to mesa. */
 353                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 354                                    dri_read->driverPrivate);
 355                 _mesa_update_state(ctx);
 356
 357         } else {
 358                 _mesa_make_current(NULL, NULL, NULL);
 359         }
 360
 361         return GL_TRUE;
 362 }
 363
 364 GLboolean
 365 nouveau_context_unbind(__DRIcontext *dri_ctx)
 366 {
 367         /* Unset current context and dispatch table */
 368         _mesa_make_current(NULL, NULL, NULL);
 369
 370         return GL_TRUE;
 371 }
 372
 373 void
 374 nouveau_fallback(struct gl_context *ctx, enum nouveau_fallback mode)
 375 {
 376         struct nouveau_context *nctx = to_nouveau_context(ctx);
 377
 378         nctx->fallback = MAX2(HWTNL, mode);
 379
 380         if (mode < SWRAST) {
 381                 nouveau_state_emit(ctx);
 382 #if 0
 383                 nouveau_bo_state_emit(ctx);
 384 #endif
 385         } else {
 386                 PUSH_KICK(context_push(ctx));
 387         }
 388 }
 389
 390 static void
 391 validate_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 392                      int *stamp)
 393 {
 394         struct gl_framebuffer *fb = draw->driverPrivate;
 395         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 396         GLboolean need_front =
 397                 (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT ||
 398                  fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT);
 399
 400         if (nfb->need_front != need_front) {
 401                 nfb->need_front = need_front;
 402                 dri2InvalidateDrawable(draw);
 403         }
 404
 405         if (draw->dri2.stamp != *stamp)
 406                 update_framebuffer(dri_ctx, draw, stamp);
 407 }
 408
 409 void
 410 nouveau_validate_framebuffer(struct gl_context *ctx)
 411 {
 412         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 413         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 414         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 415
 416         if (_mesa_is_winsys_fbo(ctx->DrawBuffer))
 417                 validate_framebuffer(dri_ctx, dri_draw,
 418                                      &dri_ctx->dri2.draw_stamp);
 419
 420         if (_mesa_is_winsys_fbo(ctx->ReadBuffer))
 421                 validate_framebuffer(dri_ctx, dri_read,
 422                                      &dri_ctx->dri2.read_stamp);
 423
 424         if (ctx->NewState & _NEW_BUFFERS)
 425                 _mesa_update_state(ctx);
 426 }