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_blend_subtract = true;
 124         ctx->Extensions.EXT_fog_coord = true;
 125         ctx->Extensions.EXT_framebuffer_blit = true;
 126         ctx->Extensions.EXT_framebuffer_object = true;
 127         ctx->Extensions.EXT_packed_depth_stencil = true;
 128         ctx->Extensions.EXT_secondary_color = true;
 129         ctx->Extensions.EXT_stencil_wrap = true;
 130         ctx->Extensions.EXT_texture_env_combine = true;
 131         ctx->Extensions.EXT_texture_filter_anisotropic = true;
 132         ctx->Extensions.EXT_texture_lod_bias = true;
 133         ctx->Extensions.NV_blend_square = true;
 134         ctx->Extensions.NV_texture_env_combine4 = true;
 135
 136         return GL_TRUE;
 137 }
 138
 139 void
 140 nouveau_context_deinit(struct gl_context *ctx)
 141 {
 142         struct nouveau_context *nctx = to_nouveau_context(ctx);
 143
 144         if (TNL_CONTEXT(ctx))
 145                 _tnl_DestroyContext(ctx);
 146
 147         if (vbo_context(ctx))
 148                 _vbo_DestroyContext(ctx);
 149
 150         if (SWRAST_CONTEXT(ctx))
 151                 _swrast_DestroyContext(ctx);
 152
 153         if (ctx->Meta)
 154                 _mesa_meta_free(ctx);
 155
 156         if (nctx->hw.chan)
 157                 nouveau_channel_free(&nctx->hw.chan);
 158
 159         nouveau_scratch_destroy(ctx);
 160         nouveau_bo_state_destroy(ctx);
 161         _mesa_free_context_data(ctx);
 162 }
 163
 164 void
 165 nouveau_context_destroy(__DRIcontext *dri_ctx)
 166 {
 167         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 168         struct gl_context *ctx = &nctx->base;
 169
 170         context_drv(ctx)->context_destroy(ctx);
 171 }
 172
 173 void
 174 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 175 {
 176         struct gl_context *ctx = dri_ctx->driverPrivate;
 177         struct nouveau_context *nctx = to_nouveau_context(ctx);
 178         __DRIscreen *screen = dri_ctx->driScreenPriv;
 179         struct gl_framebuffer *fb = draw->driverPrivate;
 180         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 181         unsigned int attachments[10];
 182         __DRIbuffer *buffers = NULL;
 183         int i = 0, count, ret;
 184
 185         if (draw->lastStamp == *draw->pStamp)
 186                 return;
 187         draw->lastStamp = *draw->pStamp;
 188
 189         if (nfb->need_front)
 190                 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 191         if (fb->Visual.doubleBufferMode)
 192                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 193         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 194                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 195         else if (fb->Visual.haveDepthBuffer)
 196                 attachments[i++] = __DRI_BUFFER_DEPTH;
 197         else if (fb->Visual.haveStencilBuffer)
 198                 attachments[i++] = __DRI_BUFFER_STENCIL;
 199
 200         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 201                                                      attachments, i, &count,
 202                                                      draw->loaderPrivate);
 203         if (buffers == NULL)
 204                 return;
 205
 206         for (i = 0; i < count; i++) {
 207                 struct gl_renderbuffer *rb;
 208                 struct nouveau_surface *s;
 209                 uint32_t old_name;
 210                 int index;
 211
 212                 switch (buffers[i].attachment) {
 213                 case __DRI_BUFFER_FRONT_LEFT:
 214                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 215                         index = BUFFER_FRONT_LEFT;
 216                         break;
 217                 case __DRI_BUFFER_BACK_LEFT:
 218                         index = BUFFER_BACK_LEFT;
 219                         break;
 220                 case __DRI_BUFFER_DEPTH:
 221                 case __DRI_BUFFER_DEPTH_STENCIL:
 222                         index = BUFFER_DEPTH;
 223                         break;
 224                 case __DRI_BUFFER_STENCIL:
 225                         index = BUFFER_STENCIL;
 226                         break;
 227                 default:
 228                         assert(0);
 229                 }
 230
 231                 rb = fb->Attachment[index].Renderbuffer;
 232                 s = &to_nouveau_renderbuffer(rb)->surface;
 233
 234                 s->width = draw->w;
 235                 s->height = draw->h;
 236                 s->pitch = buffers[i].pitch;
 237                 s->cpp = buffers[i].cpp;
 238
 239                 if (index == BUFFER_DEPTH && s->bo) {
 240                         ret = nouveau_bo_handle_get(s->bo, &old_name);
 241                         /*
 242                          * Disable fast Z clears in the next frame, the
 243                          * depth buffer contents are undefined.
 244                          */
 245                         if (!ret && old_name != buffers[i].name)
 246                                 nctx->hierz.clear_seq = 0;
 247                 }
 248
 249                 nouveau_bo_ref(NULL, &s->bo);
 250                 ret = nouveau_bo_handle_ref(context_dev(ctx),
 251                                             buffers[i].name, &s->bo);
 252                 assert(!ret);
 253         }
 254
 255         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 256 }
 257
 258 static void
 259 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 260                    int *stamp)
 261 {
 262         struct gl_context *ctx = dri_ctx->driverPrivate;
 263         struct gl_framebuffer *fb = draw->driverPrivate;
 264
 265         *stamp = *draw->pStamp;
 266
 267         nouveau_update_renderbuffers(dri_ctx, draw);
 268         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 269
 270         /* Clean up references to the old framebuffer objects. */
 271         context_dirty(ctx, FRAMEBUFFER);
 272         context_bctx(ctx, FRAMEBUFFER);
 273         FIRE_RING(context_chan(ctx));
 274 }
 275
 276 GLboolean
 277 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 278                              __DRIdrawable *dri_read)
 279 {
 280         if (dri_ctx) {
 281                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 282                 struct gl_context *ctx = &nctx->base;
 283
 284                 /* Ask the X server for new renderbuffers. */
 285                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 286                         update_framebuffer(dri_ctx, dri_draw,
 287                                            &dri_ctx->dri2.draw_stamp);
 288
 289                 if (dri_draw != dri_read &&
 290                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 291                         update_framebuffer(dri_ctx, dri_read,
 292                                            &dri_ctx->dri2.read_stamp);
 293
 294                 /* Pass it down to mesa. */
 295                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 296                                    dri_read->driverPrivate);
 297                 _mesa_update_state(ctx);
 298
 299         } else {
 300                 _mesa_make_current(NULL, NULL, NULL);
 301         }
 302
 303         return GL_TRUE;
 304 }
 305
 306 GLboolean
 307 nouveau_context_unbind(__DRIcontext *dri_ctx)
 308 {
 309         /* Unset current context and dispatch table */
 310         _mesa_make_current(NULL, NULL, NULL);
 311
 312         return GL_TRUE;
 313 }
 314
 315 void
 316 nouveau_fallback(struct gl_context *ctx, enum nouveau_fallback mode)
 317 {
 318         struct nouveau_context *nctx = to_nouveau_context(ctx);
 319
 320         nctx->fallback = MAX2(HWTNL, mode);
 321
 322         if (mode < SWRAST) {
 323                 nouveau_state_emit(ctx);
 324                 nouveau_bo_state_emit(ctx);
 325         } else {
 326                 FIRE_RING(context_chan(ctx));
 327         }
 328 }
 329
 330 static void
 331 validate_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 332                      int *stamp)
 333 {
 334         struct gl_framebuffer *fb = draw->driverPrivate;
 335         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 336         GLboolean need_front =
 337                 (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT ||
 338                  fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT);
 339
 340         if (nfb->need_front != need_front) {
 341                 nfb->need_front = need_front;
 342                 dri2InvalidateDrawable(draw);
 343         }
 344
 345         if (*draw->pStamp != *stamp)
 346                 update_framebuffer(dri_ctx, draw, stamp);
 347 }
 348
 349 void
 350 nouveau_validate_framebuffer(struct gl_context *ctx)
 351 {
 352         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 353         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 354         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 355
 356         if (ctx->DrawBuffer->Name == 0)
 357                 validate_framebuffer(dri_ctx, dri_draw,
 358                                      &dri_ctx->dri2.draw_stamp);
 359
 360         if (ctx->ReadBuffer->Name == 0)
 361                 validate_framebuffer(dri_ctx, dri_read,
 362                                      &dri_ctx->dri2.read_stamp);
 363
 364         if (ctx->NewState & _NEW_BUFFERS)
 365                 _mesa_update_state(ctx);
 366 }