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