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/dd.h"
  35 #include "main/framebuffer.h"
  36 #include "main/fbobject.h"
  37 #include "main/light.h"
  38 #include "main/state.h"
  39 #include "main/version.h"
  40 #include "drivers/common/meta.h"
  41 #include "drivers/common/driverfuncs.h"
  42 #include "swrast/swrast.h"
  43 #include "swrast/s_context.h"
  44 #include "vbo/vbo.h"
  45 #include "tnl/tnl.h"
  46 #include "tnl/t_context.h"
  47
  48 GLboolean
  49 nouveau_context_create(gl_api api,
  50                        const struct gl_config *visual, __DRIcontext *dri_ctx,
  51                        unsigned major_version,
  52                        unsigned minor_version,
  53                        uint32_t flags,
  54                        unsigned *error,
  55                        void *share_ctx)
  56 {
  57         __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
  58         struct nouveau_screen *screen = dri_screen->driverPrivate;
  59         struct nouveau_context *nctx;
  60         struct gl_context *ctx;
  61
  62         /* API and flag filtering is handled in dri2CreateContextAttribs.
  63          */
  64         (void) api;
  65         (void) flags;
  66
  67         ctx = screen->driver->context_create(screen, visual, share_ctx);
  68         if (!ctx) {
  69                 *error = __DRI_CTX_ERROR_NO_MEMORY;
  70                 return GL_FALSE;
  71         }
  72
  73         nctx = to_nouveau_context(ctx);
  74         nctx->dri_context = dri_ctx;
  75         dri_ctx->driverPrivate = ctx;
  76
  77         _mesa_compute_version(ctx);
  78         if (ctx->VersionMajor < major_version
  79             || (ctx->VersionMajor == major_version
  80                 && ctx->VersionMinor < minor_version)) {
  81            nouveau_context_destroy(dri_ctx);
  82            *error = __DRI_CTX_ERROR_BAD_VERSION;
  83            return GL_FALSE;
  84         }
  85
  86         *error = __DRI_CTX_ERROR_SUCCESS;
  87         return GL_TRUE;
  88 }
  89
  90 GLboolean
  91 nouveau_context_init(struct gl_context *ctx, struct nouveau_screen *screen,
  92                      const struct gl_config *visual, struct gl_context *share_ctx)
  93 {
  94         struct nouveau_context *nctx = to_nouveau_context(ctx);
  95         struct dd_function_table functions;
  96         int ret;
  97
  98         nctx->screen = screen;
  99         nctx->fallback = HWTNL;
 100
 101         /* Initialize the function pointers. */
 102         _mesa_init_driver_functions(&functions);
 103         nouveau_driver_functions_init(&functions);
 104         nouveau_bufferobj_functions_init(&functions);
 105         nouveau_texture_functions_init(&functions);
 106         nouveau_fbo_functions_init(&functions);
 107
 108         /* Initialize the mesa context. */
 109         _mesa_initialize_context(ctx, API_OPENGL, visual,
 110                                  share_ctx, &functions, NULL);
 111
 112         nouveau_state_init(ctx);
 113         nouveau_scratch_init(ctx);
 114         _mesa_meta_init(ctx);
 115         _swrast_CreateContext(ctx);
 116         _vbo_CreateContext(ctx);
 117         _tnl_CreateContext(ctx);
 118         nouveau_span_functions_init(ctx);
 119         _mesa_allow_light_in_model(ctx, GL_FALSE);
 120
 121         /* Allocate a hardware channel. */
 122         ret = nouveau_object_new(&context_dev(ctx)->object, 0xbeef0000,
 123                                  NOUVEAU_FIFO_CHANNEL_CLASS,
 124                                  &(struct nv04_fifo){
 125                                         .vram = 0xbeef0201,
 126                                         .gart = 0xbeef0202
 127                                  }, sizeof(struct nv04_fifo), &nctx->hw.chan);
 128         if (ret) {
 129                 nouveau_error("Error initializing the FIFO.\n");
 130                 return GL_FALSE;
 131         }
 132
 133         /* Allocate a client (thread data) */
 134         ret = nouveau_client_new(context_dev(ctx), &nctx->hw.client);
 135         if (ret) {
 136                 nouveau_error("Error creating thread data\n");
 137                 return GL_FALSE;
 138         }
 139
 140         /* Allocate a push buffer */
 141         ret = nouveau_pushbuf_new(nctx->hw.client, nctx->hw.chan, 4,
 142                                   512 * 1024, true, &nctx->hw.pushbuf);
 143         if (ret) {
 144                 nouveau_error("Error allocating DMA push buffer\n");
 145                 return GL_FALSE;
 146         }
 147
 148         /* Allocate buffer context */
 149         ret = nouveau_bufctx_new(nctx->hw.client, 16, &nctx->hw.bufctx);
 150         if (ret) {
 151                 nouveau_error("Error allocating buffer context\n");
 152                 return GL_FALSE;
 153         }
 154
 155         nctx->hw.pushbuf->user_priv = nctx->hw.bufctx;
 156
 157         /* Allocate NULL object */
 158         ret = nouveau_object_new(nctx->hw.chan, 0x00000000, NV01_NULL_CLASS,
 159                                  NULL, 0, &nctx->hw.null);
 160         if (ret) {
 161                 nouveau_error("Error allocating NULL object\n");
 162                 return GL_FALSE;
 163         }
 164
 165         /* Enable any supported extensions. */
 166         ctx->Extensions.EXT_blend_color = true;
 167         ctx->Extensions.EXT_blend_minmax = true;
 168         ctx->Extensions.EXT_fog_coord = true;
 169         ctx->Extensions.EXT_framebuffer_blit = true;
 170         ctx->Extensions.EXT_framebuffer_object = true;
 171         ctx->Extensions.EXT_packed_depth_stencil = true;
 172         ctx->Extensions.EXT_secondary_color = true;
 173         ctx->Extensions.EXT_texture_filter_anisotropic = true;
 174         ctx->Extensions.NV_blend_square = true;
 175         ctx->Extensions.NV_texture_env_combine4 = true;
 176
 177         return GL_TRUE;
 178 }
 179
 180 void
 181 nouveau_context_deinit(struct gl_context *ctx)
 182 {
 183         struct nouveau_context *nctx = to_nouveau_context(ctx);
 184
 185         if (TNL_CONTEXT(ctx))
 186                 _tnl_DestroyContext(ctx);
 187
 188         if (vbo_context(ctx))
 189                 _vbo_DestroyContext(ctx);
 190
 191         if (SWRAST_CONTEXT(ctx))
 192                 _swrast_DestroyContext(ctx);
 193
 194         if (ctx->Meta)
 195                 _mesa_meta_free(ctx);
 196
 197         nouveau_bufctx_del(&nctx->hw.bufctx);
 198         nouveau_pushbuf_del(&nctx->hw.pushbuf);
 199         nouveau_client_del(&nctx->hw.client);
 200         nouveau_object_del(&nctx->hw.chan);
 201
 202         nouveau_scratch_destroy(ctx);
 203         _mesa_free_context_data(ctx);
 204 }
 205
 206 void
 207 nouveau_context_destroy(__DRIcontext *dri_ctx)
 208 {
 209         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 210         struct gl_context *ctx = &nctx->base;
 211
 212         context_drv(ctx)->context_destroy(ctx);
 213 }
 214
 215 void
 216 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 217 {
 218         struct gl_context *ctx = dri_ctx->driverPrivate;
 219         struct nouveau_context *nctx = to_nouveau_context(ctx);
 220         __DRIscreen *screen = dri_ctx->driScreenPriv;
 221         struct gl_framebuffer *fb = draw->driverPrivate;
 222         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 223         unsigned int attachments[10];
 224         __DRIbuffer *buffers = NULL;
 225         int i = 0, count, ret;
 226
 227         if (draw->lastStamp == draw->dri2.stamp)
 228                 return;
 229         draw->lastStamp = draw->dri2.stamp;
 230
 231         if (nfb->need_front)
 232                 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 233         if (fb->Visual.doubleBufferMode)
 234                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 235         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 236                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 237         else if (fb->Visual.haveDepthBuffer)
 238                 attachments[i++] = __DRI_BUFFER_DEPTH;
 239         else if (fb->Visual.haveStencilBuffer)
 240                 attachments[i++] = __DRI_BUFFER_STENCIL;
 241
 242         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 243                                                      attachments, i, &count,
 244                                                      draw->loaderPrivate);
 245         if (buffers == NULL)
 246                 return;
 247
 248         for (i = 0; i < count; i++) {
 249                 struct gl_renderbuffer *rb;
 250                 struct nouveau_surface *s;
 251                 uint32_t old_name;
 252                 int index;
 253
 254                 switch (buffers[i].attachment) {
 255                 case __DRI_BUFFER_FRONT_LEFT:
 256                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 257                         index = BUFFER_FRONT_LEFT;
 258                         break;
 259                 case __DRI_BUFFER_BACK_LEFT:
 260                         index = BUFFER_BACK_LEFT;
 261                         break;
 262                 case __DRI_BUFFER_DEPTH:
 263                 case __DRI_BUFFER_DEPTH_STENCIL:
 264                         index = BUFFER_DEPTH;
 265                         break;
 266                 case __DRI_BUFFER_STENCIL:
 267                         index = BUFFER_STENCIL;
 268                         break;
 269                 default:
 270                         assert(0);
 271                 }
 272
 273                 rb = fb->Attachment[index].Renderbuffer;
 274                 s = &to_nouveau_renderbuffer(rb)->surface;
 275
 276                 s->width = draw->w;
 277                 s->height = draw->h;
 278                 s->pitch = buffers[i].pitch;
 279                 s->cpp = buffers[i].cpp;
 280
 281                 if (index == BUFFER_DEPTH && s->bo) {
 282                         ret = nouveau_bo_name_get(s->bo, &old_name);
 283                         /*
 284                          * Disable fast Z clears in the next frame, the
 285                          * depth buffer contents are undefined.
 286                          */
 287                         if (!ret && old_name != buffers[i].name)
 288                                 nctx->hierz.clear_seq = 0;
 289                 }
 290
 291                 nouveau_bo_ref(NULL, &s->bo);
 292                 ret = nouveau_bo_name_ref(context_dev(ctx),
 293                                           buffers[i].name, &s->bo);
 294                 assert(!ret);
 295         }
 296
 297         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 298 }
 299
 300 static void
 301 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 302                    int *stamp)
 303 {
 304         struct gl_context *ctx = dri_ctx->driverPrivate;
 305         struct gl_framebuffer *fb = draw->driverPrivate;
 306
 307         *stamp = draw->dri2.stamp;
 308
 309         nouveau_update_renderbuffers(dri_ctx, draw);
 310         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 311
 312         /* Clean up references to the old framebuffer objects. */
 313         context_dirty(ctx, FRAMEBUFFER);
 314         nouveau_bufctx_reset(to_nouveau_context(ctx)->hw.bufctx, BUFCTX_FB);
 315         PUSH_KICK(context_push(ctx));
 316 }
 317
 318 GLboolean
 319 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 320                              __DRIdrawable *dri_read)
 321 {
 322         if (dri_ctx) {
 323                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 324                 struct gl_context *ctx = &nctx->base;
 325
 326                 /* Ask the X server for new renderbuffers. */
 327                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 328                         update_framebuffer(dri_ctx, dri_draw,
 329                                            &dri_ctx->dri2.draw_stamp);
 330
 331                 if (dri_draw != dri_read &&
 332                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 333                         update_framebuffer(dri_ctx, dri_read,
 334                                            &dri_ctx->dri2.read_stamp);
 335
 336                 /* Pass it down to mesa. */
 337                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 338                                    dri_read->driverPrivate);
 339                 _mesa_update_state(ctx);
 340
 341         } else {
 342                 _mesa_make_current(NULL, NULL, NULL);
 343         }
 344
 345         return GL_TRUE;
 346 }
 347
 348 GLboolean
 349 nouveau_context_unbind(__DRIcontext *dri_ctx)
 350 {
 351         /* Unset current context and dispatch table */
 352         _mesa_make_current(NULL, NULL, NULL);
 353
 354         return GL_TRUE;
 355 }
 356
 357 void
 358 nouveau_fallback(struct gl_context *ctx, enum nouveau_fallback mode)
 359 {
 360         struct nouveau_context *nctx = to_nouveau_context(ctx);
 361
 362         nctx->fallback = MAX2(HWTNL, mode);
 363
 364         if (mode < SWRAST) {
 365                 nouveau_state_emit(ctx);
 366 #if 0
 367                 nouveau_bo_state_emit(ctx);
 368 #endif
 369         } else {
 370                 PUSH_KICK(context_push(ctx));
 371         }
 372 }
 373
 374 static void
 375 validate_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 376                      int *stamp)
 377 {
 378         struct gl_framebuffer *fb = draw->driverPrivate;
 379         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 380         GLboolean need_front =
 381                 (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT ||
 382                  fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT);
 383
 384         if (nfb->need_front != need_front) {
 385                 nfb->need_front = need_front;
 386                 dri2InvalidateDrawable(draw);
 387         }
 388
 389         if (draw->dri2.stamp != *stamp)
 390                 update_framebuffer(dri_ctx, draw, stamp);
 391 }
 392
 393 void
 394 nouveau_validate_framebuffer(struct gl_context *ctx)
 395 {
 396         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 397         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 398         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 399
 400         if (_mesa_is_winsys_fbo(ctx->DrawBuffer))
 401                 validate_framebuffer(dri_ctx, dri_draw,
 402                                      &dri_ctx->dri2.draw_stamp);
 403
 404         if (_mesa_is_winsys_fbo(ctx->ReadBuffer))
 405                 validate_framebuffer(dri_ctx, dri_read,
 406                                      &dri_ctx->dri2.read_stamp);
 407
 408         if (ctx->NewState & _NEW_BUFFERS)
 409                 _mesa_update_state(ctx);
 410 }