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 <stdio.h>
  29 #include "nouveau_driver.h"
  30 #include "nouveau_context.h"
  31 #include "nouveau_bufferobj.h"
  32 #include "nouveau_fbo.h"
  33 #include "nv_object.xml.h"
  34
  35 #include "main/api_exec.h"
  36 #include "main/dd.h"
  37 #include "main/framebuffer.h"
  38 #include "main/fbobject.h"
  39 #include "main/light.h"
  40 #include "main/state.h"
  41 #include "main/version.h"
  42 #include "main/vtxfmt.h"
  43 #include "drivers/common/meta.h"
  44 #include "drivers/common/driverfuncs.h"
  45 #include "swrast/swrast.h"
  46 #include "swrast/s_context.h"
  47 #include "vbo/vbo.h"
  48 #include "tnl/tnl.h"
  49 #include "tnl/t_context.h"
  50
  51 GLboolean
  52 nouveau_context_create(gl_api api,
  53                        const struct gl_config *visual, __DRIcontext *dri_ctx,
  54                        unsigned major_version,
  55                        unsigned minor_version,
  56                        uint32_t flags,
  57                        bool notify_reset,
  58                        unsigned *error,
  59                        void *share_ctx)
  60 {
  61         __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
  62         struct nouveau_screen *screen = dri_screen->driverPrivate;
  63         struct nouveau_context *nctx;
  64         struct gl_context *ctx;
  65
  66         if (flags & ~__DRI_CTX_FLAG_DEBUG) {
  67                 *error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
  68                 return false;
  69         }
  70
  71         if (notify_reset) {
  72                 *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
  73                 return false;
  74         }
  75
  76         ctx = screen->driver->context_create(screen, api, visual, share_ctx);
  77         if (!ctx) {
  78                 *error = __DRI_CTX_ERROR_NO_MEMORY;
  79                 return GL_FALSE;
  80         }
  81
  82         driContextSetFlags(ctx, flags);
  83
  84         nctx = to_nouveau_context(ctx);
  85         nctx->dri_context = dri_ctx;
  86         dri_ctx->driverPrivate = ctx;
  87
  88         _mesa_compute_version(ctx);
  89         if (ctx->Version < major_version * 10 + minor_version) {
  90            nouveau_context_destroy(dri_ctx);
  91            *error = __DRI_CTX_ERROR_BAD_VERSION;
  92            return GL_FALSE;
  93         }
  94
  95         /* Exec table initialization requires the version to be computed */
  96         _mesa_initialize_dispatch_tables(ctx);
  97         _mesa_initialize_vbo_vtxfmt(ctx);
  98
  99         if (nouveau_bo_new(context_dev(ctx), NOUVEAU_BO_VRAM, 0, 4096,
 100                            NULL, &nctx->fence)) {
 101                 nouveau_context_destroy(dri_ctx);
 102                 *error = __DRI_CTX_ERROR_NO_MEMORY;
 103                 return GL_FALSE;
 104         }
 105
 106         *error = __DRI_CTX_ERROR_SUCCESS;
 107         return GL_TRUE;
 108 }
 109
 110 GLboolean
 111 nouveau_context_init(struct gl_context *ctx, gl_api api,
 112                      struct nouveau_screen *screen,
 113                      const struct gl_config *visual, struct gl_context *share_ctx)
 114 {
 115         struct nouveau_context *nctx = to_nouveau_context(ctx);
 116         struct dd_function_table functions;
 117         int ret;
 118
 119         nctx->screen = screen;
 120         nctx->fallback = HWTNL;
 121
 122         /* Initialize the function pointers. */
 123         _mesa_init_driver_functions(&functions);
 124         nouveau_driver_functions_init(&functions);
 125         nouveau_bufferobj_functions_init(&functions);
 126         nouveau_texture_functions_init(&functions);
 127         nouveau_fbo_functions_init(&functions);
 128
 129         /* Initialize the mesa context. */
 130         if (!_mesa_initialize_context(ctx, api, visual, share_ctx, &functions))
 131                 return GL_FALSE;
 132
 133         nouveau_state_init(ctx);
 134         nouveau_scratch_init(ctx);
 135         _mesa_meta_init(ctx);
 136         _swrast_CreateContext(ctx);
 137         _vbo_CreateContext(ctx);
 138         _tnl_CreateContext(ctx);
 139         nouveau_span_functions_init(ctx);
 140         _mesa_allow_light_in_model(ctx, GL_FALSE);
 141
 142         /* Allocate a hardware channel. */
 143         ret = nouveau_object_new(&context_dev(ctx)->object, 0xbeef0000,
 144                                  NOUVEAU_FIFO_CHANNEL_CLASS,
 145                                  &(struct nv04_fifo){
 146                                         .vram = 0xbeef0201,
 147                                         .gart = 0xbeef0202
 148                                  }, sizeof(struct nv04_fifo), &nctx->hw.chan);
 149         if (ret) {
 150                 nouveau_error("Error initializing the FIFO.\n");
 151                 return GL_FALSE;
 152         }
 153
 154         /* Allocate a client (thread data) */
 155         ret = nouveau_client_new(context_dev(ctx), &nctx->hw.client);
 156         if (ret) {
 157                 nouveau_error("Error creating thread data\n");
 158                 return GL_FALSE;
 159         }
 160
 161         /* Allocate a push buffer */
 162         ret = nouveau_pushbuf_new(nctx->hw.client, nctx->hw.chan, 4,
 163                                   512 * 1024, true, &nctx->hw.pushbuf);
 164         if (ret) {
 165                 nouveau_error("Error allocating DMA push buffer\n");
 166                 return GL_FALSE;
 167         }
 168
 169         /* Allocate buffer context */
 170         ret = nouveau_bufctx_new(nctx->hw.client, 16, &nctx->hw.bufctx);
 171         if (ret) {
 172                 nouveau_error("Error allocating buffer context\n");
 173                 return GL_FALSE;
 174         }
 175
 176         nctx->hw.pushbuf->user_priv = nctx->hw.bufctx;
 177
 178         /* Allocate NULL object */
 179         ret = nouveau_object_new(nctx->hw.chan, 0x00000000, NV01_NULL_CLASS,
 180                                  NULL, 0, &nctx->hw.null);
 181         if (ret) {
 182                 nouveau_error("Error allocating NULL object\n");
 183                 return GL_FALSE;
 184         }
 185
 186         /* Enable any supported extensions. */
 187         ctx->Extensions.EXT_blend_color = true;
 188         ctx->Extensions.EXT_blend_minmax = true;
 189         ctx->Extensions.EXT_texture_filter_anisotropic = true;
 190         ctx->Extensions.NV_texture_env_combine4 = true;
 191         ctx->Const.MaxColorAttachments = 1;
 192
 193         /* This effectively disables 3D textures */
 194         ctx->Const.Max3DTextureLevels = 1;
 195
 196         return GL_TRUE;
 197 }
 198
 199 void
 200 nouveau_context_deinit(struct gl_context *ctx)
 201 {
 202         struct nouveau_context *nctx = to_nouveau_context(ctx);
 203
 204         if (TNL_CONTEXT(ctx))
 205                 _tnl_DestroyContext(ctx);
 206
 207         if (vbo_context(ctx))
 208                 _vbo_DestroyContext(ctx);
 209
 210         if (SWRAST_CONTEXT(ctx))
 211                 _swrast_DestroyContext(ctx);
 212
 213         if (ctx->Meta)
 214                 _mesa_meta_free(ctx);
 215
 216         nouveau_bufctx_del(&nctx->hw.bufctx);
 217         nouveau_pushbuf_del(&nctx->hw.pushbuf);
 218         nouveau_client_del(&nctx->hw.client);
 219         nouveau_object_del(&nctx->hw.chan);
 220
 221         nouveau_scratch_destroy(ctx);
 222         _mesa_free_context_data(ctx);
 223 }
 224
 225 void
 226 nouveau_context_destroy(__DRIcontext *dri_ctx)
 227 {
 228         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 229         struct gl_context *ctx = &nctx->base;
 230
 231         nouveau_bo_ref(NULL, &nctx->fence);
 232         context_drv(ctx)->context_destroy(ctx);
 233 }
 234
 235 void
 236 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 237 {
 238         struct gl_context *ctx = dri_ctx->driverPrivate;
 239         struct nouveau_context *nctx = to_nouveau_context(ctx);
 240         __DRIscreen *screen = dri_ctx->driScreenPriv;
 241         struct gl_framebuffer *fb = draw->driverPrivate;
 242         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 243         unsigned int attachments[10];
 244         __DRIbuffer *buffers = NULL;
 245         int i = 0, count, ret;
 246
 247         if (draw->lastStamp == draw->dri2.stamp)
 248                 return;
 249         draw->lastStamp = draw->dri2.stamp;
 250
 251         if (nfb->need_front)
 252                 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 253         if (fb->Visual.doubleBufferMode)
 254                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 255         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 256                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 257         else if (fb->Visual.haveDepthBuffer)
 258                 attachments[i++] = __DRI_BUFFER_DEPTH;
 259         else if (fb->Visual.haveStencilBuffer)
 260                 attachments[i++] = __DRI_BUFFER_STENCIL;
 261
 262         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 263                                                      attachments, i, &count,
 264                                                      draw->loaderPrivate);
 265         if (buffers == NULL)
 266                 return;
 267
 268         for (i = 0; i < count; i++) {
 269                 struct gl_renderbuffer *rb;
 270                 struct nouveau_surface *s;
 271                 uint32_t old_name;
 272                 int index;
 273
 274                 switch (buffers[i].attachment) {
 275                 case __DRI_BUFFER_FRONT_LEFT:
 276                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 277                         index = BUFFER_FRONT_LEFT;
 278                         break;
 279                 case __DRI_BUFFER_BACK_LEFT:
 280                         index = BUFFER_BACK_LEFT;
 281                         break;
 282                 case __DRI_BUFFER_DEPTH:
 283                 case __DRI_BUFFER_DEPTH_STENCIL:
 284                         index = BUFFER_DEPTH;
 285                         break;
 286                 case __DRI_BUFFER_STENCIL:
 287                         index = BUFFER_STENCIL;
 288                         break;
 289                 default:
 290                         assert(0);
 291                 }
 292
 293                 rb = fb->Attachment[index].Renderbuffer;
 294                 s = &to_nouveau_renderbuffer(rb)->surface;
 295
 296                 s->width = draw->w;
 297                 s->height = draw->h;
 298                 s->pitch = buffers[i].pitch;
 299                 s->cpp = buffers[i].cpp;
 300
 301                 if (index == BUFFER_DEPTH && s->bo) {
 302                         ret = nouveau_bo_name_get(s->bo, &old_name);
 303                         /*
 304                          * Disable fast Z clears in the next frame, the
 305                          * depth buffer contents are undefined.
 306                          */
 307                         if (!ret && old_name != buffers[i].name)
 308                                 nctx->hierz.clear_seq = 0;
 309                 }
 310
 311                 nouveau_bo_ref(NULL, &s->bo);
 312                 ret = nouveau_bo_name_ref(context_dev(ctx),
 313                                           buffers[i].name, &s->bo);
 314                 assert(!ret);
 315         }
 316
 317         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 318 }
 319
 320 static void
 321 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 322                    int *stamp)
 323 {
 324         struct gl_context *ctx = dri_ctx->driverPrivate;
 325         struct gl_framebuffer *fb = draw->driverPrivate;
 326
 327         *stamp = draw->dri2.stamp;
 328
 329         nouveau_update_renderbuffers(dri_ctx, draw);
 330         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 331
 332         /* Clean up references to the old framebuffer objects. */
 333         context_dirty(ctx, FRAMEBUFFER);
 334         nouveau_bufctx_reset(to_nouveau_context(ctx)->hw.bufctx, BUFCTX_FB);
 335         PUSH_KICK(context_push(ctx));
 336 }
 337
 338 GLboolean
 339 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 340                              __DRIdrawable *dri_read)
 341 {
 342         if (dri_ctx) {
 343                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 344                 struct gl_context *ctx = &nctx->base;
 345
 346                 /* Ask the X server for new renderbuffers. */
 347                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 348                         update_framebuffer(dri_ctx, dri_draw,
 349                                            &dri_ctx->dri2.draw_stamp);
 350
 351                 if (dri_draw != dri_read &&
 352                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 353                         update_framebuffer(dri_ctx, dri_read,
 354                                            &dri_ctx->dri2.read_stamp);
 355
 356                 /* Pass it down to mesa. */
 357                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 358                                    dri_read->driverPrivate);
 359                 _mesa_update_state(ctx);
 360
 361         } else {
 362                 _mesa_make_current(NULL, NULL, NULL);
 363         }
 364
 365         return GL_TRUE;
 366 }
 367
 368 GLboolean
 369 nouveau_context_unbind(__DRIcontext *dri_ctx)
 370 {
 371         /* Unset current context and dispatch table */
 372         _mesa_make_current(NULL, NULL, NULL);
 373
 374         return GL_TRUE;
 375 }
 376
 377 void
 378 nouveau_fallback(struct gl_context *ctx, enum nouveau_fallback mode)
 379 {
 380         struct nouveau_context *nctx = to_nouveau_context(ctx);
 381
 382         nctx->fallback = MAX2(HWTNL, mode);
 383
 384         if (mode < SWRAST) {
 385                 nouveau_state_emit(ctx);
 386 #if 0
 387                 nouveau_bo_state_emit(ctx);
 388 #endif
 389         } else {
 390                 PUSH_KICK(context_push(ctx));
 391         }
 392 }
 393
 394 static void
 395 validate_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 396                      int *stamp)
 397 {
 398         struct gl_framebuffer *fb = draw->driverPrivate;
 399         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 400         GLboolean need_front =
 401                 (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT ||
 402                  fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT);
 403
 404         if (nfb->need_front != need_front) {
 405                 nfb->need_front = need_front;
 406                 dri2InvalidateDrawable(draw);
 407         }
 408
 409         if (draw->dri2.stamp != *stamp)
 410                 update_framebuffer(dri_ctx, draw, stamp);
 411 }
 412
 413 void
 414 nouveau_validate_framebuffer(struct gl_context *ctx)
 415 {
 416         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 417         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 418         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 419
 420         if (_mesa_is_winsys_fbo(ctx->DrawBuffer))
 421                 validate_framebuffer(dri_ctx, dri_draw,
 422                                      &dri_ctx->dri2.draw_stamp);
 423
 424         if (_mesa_is_winsys_fbo(ctx->ReadBuffer))
 425                 validate_framebuffer(dri_ctx, dri_read,
 426                                      &dri_ctx->dri2.read_stamp);
 427
 428         if (ctx->NewState & _NEW_BUFFERS)
 429                 _mesa_update_state(ctx);
 430 }