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         /* This effectively disables 3D textures */
 193         ctx->Const.Max3DTextureLevels = 1;
 194
 195         return GL_TRUE;
 196 }
 197
 198 void
 199 nouveau_context_deinit(struct gl_context *ctx)
 200 {
 201         struct nouveau_context *nctx = to_nouveau_context(ctx);
 202
 203         if (TNL_CONTEXT(ctx))
 204                 _tnl_DestroyContext(ctx);
 205
 206         if (vbo_context(ctx))
 207                 _vbo_DestroyContext(ctx);
 208
 209         if (SWRAST_CONTEXT(ctx))
 210                 _swrast_DestroyContext(ctx);
 211
 212         if (ctx->Meta)
 213                 _mesa_meta_free(ctx);
 214
 215         nouveau_bufctx_del(&nctx->hw.bufctx);
 216         nouveau_pushbuf_del(&nctx->hw.pushbuf);
 217         nouveau_client_del(&nctx->hw.client);
 218         nouveau_object_del(&nctx->hw.chan);
 219
 220         nouveau_scratch_destroy(ctx);
 221         _mesa_free_context_data(ctx);
 222 }
 223
 224 void
 225 nouveau_context_destroy(__DRIcontext *dri_ctx)
 226 {
 227         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 228         struct gl_context *ctx = &nctx->base;
 229
 230         nouveau_bo_ref(NULL, &nctx->fence);
 231         context_drv(ctx)->context_destroy(ctx);
 232 }
 233
 234 void
 235 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 236 {
 237         struct gl_context *ctx = dri_ctx->driverPrivate;
 238         struct nouveau_context *nctx = to_nouveau_context(ctx);
 239         __DRIscreen *screen = dri_ctx->driScreenPriv;
 240         struct gl_framebuffer *fb = draw->driverPrivate;
 241         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 242         unsigned int attachments[10];
 243         __DRIbuffer *buffers = NULL;
 244         int i = 0, count, ret;
 245
 246         if (draw->lastStamp == draw->dri2.stamp)
 247                 return;
 248         draw->lastStamp = draw->dri2.stamp;
 249
 250         if (nfb->need_front)
 251                 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 252         if (fb->Visual.doubleBufferMode)
 253                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 254         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 255                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 256         else if (fb->Visual.haveDepthBuffer)
 257                 attachments[i++] = __DRI_BUFFER_DEPTH;
 258         else if (fb->Visual.haveStencilBuffer)
 259                 attachments[i++] = __DRI_BUFFER_STENCIL;
 260
 261         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 262                                                      attachments, i, &count,
 263                                                      draw->loaderPrivate);
 264         if (buffers == NULL)
 265                 return;
 266
 267         for (i = 0; i < count; i++) {
 268                 struct gl_renderbuffer *rb;
 269                 struct nouveau_surface *s;
 270                 uint32_t old_name;
 271                 int index;
 272
 273                 switch (buffers[i].attachment) {
 274                 case __DRI_BUFFER_FRONT_LEFT:
 275                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 276                         index = BUFFER_FRONT_LEFT;
 277                         break;
 278                 case __DRI_BUFFER_BACK_LEFT:
 279                         index = BUFFER_BACK_LEFT;
 280                         break;
 281                 case __DRI_BUFFER_DEPTH:
 282                 case __DRI_BUFFER_DEPTH_STENCIL:
 283                         index = BUFFER_DEPTH;
 284                         break;
 285                 case __DRI_BUFFER_STENCIL:
 286                         index = BUFFER_STENCIL;
 287                         break;
 288                 default:
 289                         assert(0);
 290                 }
 291
 292                 rb = fb->Attachment[index].Renderbuffer;
 293                 s = &to_nouveau_renderbuffer(rb)->surface;
 294
 295                 s->width = draw->w;
 296                 s->height = draw->h;
 297                 s->pitch = buffers[i].pitch;
 298                 s->cpp = buffers[i].cpp;
 299
 300                 if (index == BUFFER_DEPTH && s->bo) {
 301                         ret = nouveau_bo_name_get(s->bo, &old_name);
 302                         /*
 303                          * Disable fast Z clears in the next frame, the
 304                          * depth buffer contents are undefined.
 305                          */
 306                         if (!ret && old_name != buffers[i].name)
 307                                 nctx->hierz.clear_seq = 0;
 308                 }
 309
 310                 nouveau_bo_ref(NULL, &s->bo);
 311                 ret = nouveau_bo_name_ref(context_dev(ctx),
 312                                           buffers[i].name, &s->bo);
 313                 assert(!ret);
 314         }
 315
 316         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 317 }
 318
 319 static void
 320 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 321                    int *stamp)
 322 {
 323         struct gl_context *ctx = dri_ctx->driverPrivate;
 324         struct gl_framebuffer *fb = draw->driverPrivate;
 325
 326         *stamp = draw->dri2.stamp;
 327
 328         nouveau_update_renderbuffers(dri_ctx, draw);
 329         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 330
 331         /* Clean up references to the old framebuffer objects. */
 332         context_dirty(ctx, FRAMEBUFFER);
 333         nouveau_bufctx_reset(to_nouveau_context(ctx)->hw.bufctx, BUFCTX_FB);
 334         PUSH_KICK(context_push(ctx));
 335 }
 336
 337 GLboolean
 338 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 339                              __DRIdrawable *dri_read)
 340 {
 341         if (dri_ctx) {
 342                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 343                 struct gl_context *ctx = &nctx->base;
 344
 345                 /* Ask the X server for new renderbuffers. */
 346                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 347                         update_framebuffer(dri_ctx, dri_draw,
 348                                            &dri_ctx->dri2.draw_stamp);
 349
 350                 if (dri_draw != dri_read &&
 351                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 352                         update_framebuffer(dri_ctx, dri_read,
 353                                            &dri_ctx->dri2.read_stamp);
 354
 355                 /* Pass it down to mesa. */
 356                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 357                                    dri_read->driverPrivate);
 358                 _mesa_update_state(ctx);
 359
 360         } else {
 361                 _mesa_make_current(NULL, NULL, NULL);
 362         }
 363
 364         return GL_TRUE;
 365 }
 366
 367 GLboolean
 368 nouveau_context_unbind(__DRIcontext *dri_ctx)
 369 {
 370         /* Unset current context and dispatch table */
 371         _mesa_make_current(NULL, NULL, NULL);
 372
 373         return GL_TRUE;
 374 }
 375
 376 void
 377 nouveau_fallback(struct gl_context *ctx, enum nouveau_fallback mode)
 378 {
 379         struct nouveau_context *nctx = to_nouveau_context(ctx);
 380
 381         nctx->fallback = MAX2(HWTNL, mode);
 382
 383         if (mode < SWRAST) {
 384                 nouveau_state_emit(ctx);
 385 #if 0
 386                 nouveau_bo_state_emit(ctx);
 387 #endif
 388         } else {
 389                 PUSH_KICK(context_push(ctx));
 390         }
 391 }
 392
 393 static void
 394 validate_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 395                      int *stamp)
 396 {
 397         struct gl_framebuffer *fb = draw->driverPrivate;
 398         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 399         GLboolean need_front =
 400                 (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT ||
 401                  fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT);
 402
 403         if (nfb->need_front != need_front) {
 404                 nfb->need_front = need_front;
 405                 dri2InvalidateDrawable(draw);
 406         }
 407
 408         if (draw->dri2.stamp != *stamp)
 409                 update_framebuffer(dri_ctx, draw, stamp);
 410 }
 411
 412 void
 413 nouveau_validate_framebuffer(struct gl_context *ctx)
 414 {
 415         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 416         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 417         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 418
 419         if (_mesa_is_winsys_fbo(ctx->DrawBuffer))
 420                 validate_framebuffer(dri_ctx, dri_draw,
 421                                      &dri_ctx->dri2.draw_stamp);
 422
 423         if (_mesa_is_winsys_fbo(ctx->ReadBuffer))
 424                 validate_framebuffer(dri_ctx, dri_read,
 425                                      &dri_ctx->dri2.read_stamp);
 426
 427         if (ctx->NewState & _NEW_BUFFERS)
 428                 _mesa_update_state(ctx);
 429 }