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