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                        unsigned *error,
  57                        void *share_ctx)
  58 {
  59         __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
  60         struct nouveau_screen *screen = dri_screen->driverPrivate;
  61         struct nouveau_context *nctx;
  62         struct gl_context *ctx;
  63
  64         switch (api) {
  65         case API_OPENGL_COMPAT:
  66                 /* Do after-the-fact version checking (below).
  67                  */
  68                 break;
  69         case API_OPENGLES:
  70                 /* NV10 and NV20 can support OpenGL ES 1.0 only.  Older chips
  71                  * cannot do even that.
  72                  */
  73                 if ((screen->device->chipset & 0xf0) == 0x00) {
  74                         *error = __DRI_CTX_ERROR_BAD_API;
  75                         return GL_FALSE;
  76                 } else if (minor_version != 0) {
  77                         *error = __DRI_CTX_ERROR_BAD_VERSION;
  78                         return GL_FALSE;
  79                 }
  80                 break;
  81         case API_OPENGLES2:
  82         case API_OPENGL_CORE:
  83                 *error = __DRI_CTX_ERROR_BAD_API;
  84                 return GL_FALSE;
  85         }
  86
  87         /* API and flag filtering is handled in dri2CreateContextAttribs.
  88          */
  89         (void) flags;
  90
  91         ctx = screen->driver->context_create(screen, visual, share_ctx);
  92         if (!ctx) {
  93                 *error = __DRI_CTX_ERROR_NO_MEMORY;
  94                 return GL_FALSE;
  95         }
  96
  97         nctx = to_nouveau_context(ctx);
  98         nctx->dri_context = dri_ctx;
  99         dri_ctx->driverPrivate = ctx;
 100
 101         _mesa_compute_version(ctx);
 102         if (ctx->Version < major_version * 10 + minor_version) {
 103            nouveau_context_destroy(dri_ctx);
 104            *error = __DRI_CTX_ERROR_BAD_VERSION;
 105            return GL_FALSE;
 106         }
 107
 108         /* Exec table initialization requires the version to be computed */
 109         _mesa_initialize_dispatch_tables(ctx);
 110         _mesa_initialize_vbo_vtxfmt(ctx);
 111
 112         if (nouveau_bo_new(context_dev(ctx), NOUVEAU_BO_VRAM, 0, 4096,
 113                            NULL, &nctx->fence)) {
 114                 nouveau_context_destroy(dri_ctx);
 115                 *error = __DRI_CTX_ERROR_NO_MEMORY;
 116                 return GL_FALSE;
 117         }
 118
 119         *error = __DRI_CTX_ERROR_SUCCESS;
 120         return GL_TRUE;
 121 }
 122
 123 GLboolean
 124 nouveau_context_init(struct gl_context *ctx, struct nouveau_screen *screen,
 125                      const struct gl_config *visual, struct gl_context *share_ctx)
 126 {
 127         struct nouveau_context *nctx = to_nouveau_context(ctx);
 128         struct dd_function_table functions;
 129         int ret;
 130
 131         nctx->screen = screen;
 132         nctx->fallback = HWTNL;
 133
 134         /* Initialize the function pointers. */
 135         _mesa_init_driver_functions(&functions);
 136         nouveau_driver_functions_init(&functions);
 137         nouveau_bufferobj_functions_init(&functions);
 138         nouveau_texture_functions_init(&functions);
 139         nouveau_fbo_functions_init(&functions);
 140
 141         /* Initialize the mesa context. */
 142         _mesa_initialize_context(ctx, API_OPENGL_COMPAT, visual,
 143                                  share_ctx, &functions);
 144
 145         nouveau_state_init(ctx);
 146         nouveau_scratch_init(ctx);
 147         _mesa_meta_init(ctx);
 148         _swrast_CreateContext(ctx);
 149         _vbo_CreateContext(ctx);
 150         _tnl_CreateContext(ctx);
 151         nouveau_span_functions_init(ctx);
 152         _mesa_allow_light_in_model(ctx, GL_FALSE);
 153
 154         /* Allocate a hardware channel. */
 155         ret = nouveau_object_new(&context_dev(ctx)->object, 0xbeef0000,
 156                                  NOUVEAU_FIFO_CHANNEL_CLASS,
 157                                  &(struct nv04_fifo){
 158                                         .vram = 0xbeef0201,
 159                                         .gart = 0xbeef0202
 160                                  }, sizeof(struct nv04_fifo), &nctx->hw.chan);
 161         if (ret) {
 162                 nouveau_error("Error initializing the FIFO.\n");
 163                 return GL_FALSE;
 164         }
 165
 166         /* Allocate a client (thread data) */
 167         ret = nouveau_client_new(context_dev(ctx), &nctx->hw.client);
 168         if (ret) {
 169                 nouveau_error("Error creating thread data\n");
 170                 return GL_FALSE;
 171         }
 172
 173         /* Allocate a push buffer */
 174         ret = nouveau_pushbuf_new(nctx->hw.client, nctx->hw.chan, 4,
 175                                   512 * 1024, true, &nctx->hw.pushbuf);
 176         if (ret) {
 177                 nouveau_error("Error allocating DMA push buffer\n");
 178                 return GL_FALSE;
 179         }
 180
 181         /* Allocate buffer context */
 182         ret = nouveau_bufctx_new(nctx->hw.client, 16, &nctx->hw.bufctx);
 183         if (ret) {
 184                 nouveau_error("Error allocating buffer context\n");
 185                 return GL_FALSE;
 186         }
 187
 188         nctx->hw.pushbuf->user_priv = nctx->hw.bufctx;
 189
 190         /* Allocate NULL object */
 191         ret = nouveau_object_new(nctx->hw.chan, 0x00000000, NV01_NULL_CLASS,
 192                                  NULL, 0, &nctx->hw.null);
 193         if (ret) {
 194                 nouveau_error("Error allocating NULL object\n");
 195                 return GL_FALSE;
 196         }
 197
 198         /* Enable any supported extensions. */
 199         ctx->Extensions.EXT_blend_color = true;
 200         ctx->Extensions.EXT_blend_minmax = true;
 201         ctx->Extensions.EXT_fog_coord = true;
 202         ctx->Extensions.EXT_framebuffer_blit = true;
 203         ctx->Extensions.EXT_framebuffer_object = true;
 204         ctx->Extensions.EXT_packed_depth_stencil = true;
 205         ctx->Extensions.EXT_secondary_color = true;
 206         ctx->Extensions.EXT_texture_filter_anisotropic = true;
 207         ctx->Extensions.NV_blend_square = true;
 208         ctx->Extensions.NV_texture_env_combine4 = true;
 209
 210         return GL_TRUE;
 211 }
 212
 213 void
 214 nouveau_context_deinit(struct gl_context *ctx)
 215 {
 216         struct nouveau_context *nctx = to_nouveau_context(ctx);
 217
 218         if (TNL_CONTEXT(ctx))
 219                 _tnl_DestroyContext(ctx);
 220
 221         if (vbo_context(ctx))
 222                 _vbo_DestroyContext(ctx);
 223
 224         if (SWRAST_CONTEXT(ctx))
 225                 _swrast_DestroyContext(ctx);
 226
 227         if (ctx->Meta)
 228                 _mesa_meta_free(ctx);
 229
 230         nouveau_bufctx_del(&nctx->hw.bufctx);
 231         nouveau_pushbuf_del(&nctx->hw.pushbuf);
 232         nouveau_client_del(&nctx->hw.client);
 233         nouveau_object_del(&nctx->hw.chan);
 234
 235         nouveau_scratch_destroy(ctx);
 236         _mesa_free_context_data(ctx);
 237 }
 238
 239 void
 240 nouveau_context_destroy(__DRIcontext *dri_ctx)
 241 {
 242         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 243         struct gl_context *ctx = &nctx->base;
 244
 245         nouveau_bo_ref(NULL, &nctx->fence);
 246         context_drv(ctx)->context_destroy(ctx);
 247 }
 248
 249 void
 250 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 251 {
 252         struct gl_context *ctx = dri_ctx->driverPrivate;
 253         struct nouveau_context *nctx = to_nouveau_context(ctx);
 254         __DRIscreen *screen = dri_ctx->driScreenPriv;
 255         struct gl_framebuffer *fb = draw->driverPrivate;
 256         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 257         unsigned int attachments[10];
 258         __DRIbuffer *buffers = NULL;
 259         int i = 0, count, ret;
 260
 261         if (draw->lastStamp == draw->dri2.stamp)
 262                 return;
 263         draw->lastStamp = draw->dri2.stamp;
 264
 265         if (nfb->need_front)
 266                 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 267         if (fb->Visual.doubleBufferMode)
 268                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 269         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 270                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 271         else if (fb->Visual.haveDepthBuffer)
 272                 attachments[i++] = __DRI_BUFFER_DEPTH;
 273         else if (fb->Visual.haveStencilBuffer)
 274                 attachments[i++] = __DRI_BUFFER_STENCIL;
 275
 276         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 277                                                      attachments, i, &count,
 278                                                      draw->loaderPrivate);
 279         if (buffers == NULL)
 280                 return;
 281
 282         for (i = 0; i < count; i++) {
 283                 struct gl_renderbuffer *rb;
 284                 struct nouveau_surface *s;
 285                 uint32_t old_name;
 286                 int index;
 287
 288                 switch (buffers[i].attachment) {
 289                 case __DRI_BUFFER_FRONT_LEFT:
 290                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 291                         index = BUFFER_FRONT_LEFT;
 292                         break;
 293                 case __DRI_BUFFER_BACK_LEFT:
 294                         index = BUFFER_BACK_LEFT;
 295                         break;
 296                 case __DRI_BUFFER_DEPTH:
 297                 case __DRI_BUFFER_DEPTH_STENCIL:
 298                         index = BUFFER_DEPTH;
 299                         break;
 300                 case __DRI_BUFFER_STENCIL:
 301                         index = BUFFER_STENCIL;
 302                         break;
 303                 default:
 304                         assert(0);
 305                 }
 306
 307                 rb = fb->Attachment[index].Renderbuffer;
 308                 s = &to_nouveau_renderbuffer(rb)->surface;
 309
 310                 s->width = draw->w;
 311                 s->height = draw->h;
 312                 s->pitch = buffers[i].pitch;
 313                 s->cpp = buffers[i].cpp;
 314
 315                 if (index == BUFFER_DEPTH && s->bo) {
 316                         ret = nouveau_bo_name_get(s->bo, &old_name);
 317                         /*
 318                          * Disable fast Z clears in the next frame, the
 319                          * depth buffer contents are undefined.
 320                          */
 321                         if (!ret && old_name != buffers[i].name)
 322                                 nctx->hierz.clear_seq = 0;
 323                 }
 324
 325                 nouveau_bo_ref(NULL, &s->bo);
 326                 ret = nouveau_bo_name_ref(context_dev(ctx),
 327                                           buffers[i].name, &s->bo);
 328                 assert(!ret);
 329         }
 330
 331         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 332 }
 333
 334 static void
 335 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 336                    int *stamp)
 337 {
 338         struct gl_context *ctx = dri_ctx->driverPrivate;
 339         struct gl_framebuffer *fb = draw->driverPrivate;
 340
 341         *stamp = draw->dri2.stamp;
 342
 343         nouveau_update_renderbuffers(dri_ctx, draw);
 344         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 345
 346         /* Clean up references to the old framebuffer objects. */
 347         context_dirty(ctx, FRAMEBUFFER);
 348         nouveau_bufctx_reset(to_nouveau_context(ctx)->hw.bufctx, BUFCTX_FB);
 349         PUSH_KICK(context_push(ctx));
 350 }
 351
 352 GLboolean
 353 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 354                              __DRIdrawable *dri_read)
 355 {
 356         if (dri_ctx) {
 357                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 358                 struct gl_context *ctx = &nctx->base;
 359
 360                 /* Ask the X server for new renderbuffers. */
 361                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 362                         update_framebuffer(dri_ctx, dri_draw,
 363                                            &dri_ctx->dri2.draw_stamp);
 364
 365                 if (dri_draw != dri_read &&
 366                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 367                         update_framebuffer(dri_ctx, dri_read,
 368                                            &dri_ctx->dri2.read_stamp);
 369
 370                 /* Pass it down to mesa. */
 371                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 372                                    dri_read->driverPrivate);
 373                 _mesa_update_state(ctx);
 374
 375         } else {
 376                 _mesa_make_current(NULL, NULL, NULL);
 377         }
 378
 379         return GL_TRUE;
 380 }
 381
 382 GLboolean
 383 nouveau_context_unbind(__DRIcontext *dri_ctx)
 384 {
 385         /* Unset current context and dispatch table */
 386         _mesa_make_current(NULL, NULL, NULL);
 387
 388         return GL_TRUE;
 389 }
 390
 391 void
 392 nouveau_fallback(struct gl_context *ctx, enum nouveau_fallback mode)
 393 {
 394         struct nouveau_context *nctx = to_nouveau_context(ctx);
 395
 396         nctx->fallback = MAX2(HWTNL, mode);
 397
 398         if (mode < SWRAST) {
 399                 nouveau_state_emit(ctx);
 400 #if 0
 401                 nouveau_bo_state_emit(ctx);
 402 #endif
 403         } else {
 404                 PUSH_KICK(context_push(ctx));
 405         }
 406 }
 407
 408 static void
 409 validate_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 410                      int *stamp)
 411 {
 412         struct gl_framebuffer *fb = draw->driverPrivate;
 413         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 414         GLboolean need_front =
 415                 (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT ||
 416                  fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT);
 417
 418         if (nfb->need_front != need_front) {
 419                 nfb->need_front = need_front;
 420                 dri2InvalidateDrawable(draw);
 421         }
 422
 423         if (draw->dri2.stamp != *stamp)
 424                 update_framebuffer(dri_ctx, draw, stamp);
 425 }
 426
 427 void
 428 nouveau_validate_framebuffer(struct gl_context *ctx)
 429 {
 430         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 431         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 432         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 433
 434         if (_mesa_is_winsys_fbo(ctx->DrawBuffer))
 435                 validate_framebuffer(dri_ctx, dri_draw,
 436                                      &dri_ctx->dri2.draw_stamp);
 437
 438         if (_mesa_is_winsys_fbo(ctx->ReadBuffer))
 439                 validate_framebuffer(dri_ctx, dri_read,
 440                                      &dri_ctx->dri2.read_stamp);
 441
 442         if (ctx->NewState & _NEW_BUFFERS)
 443                 _mesa_update_state(ctx);
 444 }