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