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