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