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 "nouveau_driver.h"
  28 #include "nouveau_context.h"
  29 #include "nouveau_bufferobj.h"
  30 #include "nouveau_fbo.h"
  31
  32 #include "main/dd.h"
  33 #include "main/framebuffer.h"
  34 #include "main/light.h"
  35 #include "main/state.h"
  36 #include "drivers/common/meta.h"
  37 #include "drivers/common/driverfuncs.h"
  38 #include "swrast/swrast.h"
  39 #include "swrast/s_context.h"
  40 #include "vbo/vbo.h"
  41 #include "tnl/tnl.h"
  42 #include "tnl/t_context.h"
  43
  44 #define need_GL_EXT_framebuffer_object
  45 #define need_GL_EXT_fog_coord
  46 #define need_GL_EXT_secondary_color
  47
  48 #include "main/remap_helper.h"
  49
  50 static const struct dri_extension nouveau_extensions[] = {
  51         { "GL_ARB_multitexture",        NULL },
  52         { "GL_ARB_texture_env_add",     NULL },
  53         { "GL_ARB_texture_mirrored_repeat", NULL },
  54         { "GL_EXT_fog_coord",           GL_EXT_fog_coord_functions },
  55         { "GL_EXT_framebuffer_blit",    NULL },
  56         { "GL_EXT_framebuffer_object",  GL_EXT_framebuffer_object_functions },
  57         { "GL_EXT_packed_depth_stencil", NULL},
  58         { "GL_EXT_secondary_color",     GL_EXT_secondary_color_functions },
  59         { "GL_EXT_stencil_wrap",        NULL },
  60         { "GL_EXT_texture_env_combine", NULL },
  61         { "GL_EXT_texture_filter_anisotropic", NULL },
  62         { "GL_EXT_texture_lod_bias",    NULL },
  63         { "GL_NV_blend_square",         NULL },
  64         { "GL_NV_texture_env_combine4", NULL },
  65         { NULL,                         NULL }
  66 };
  67
  68 static void
  69 nouveau_channel_flush_notify(struct nouveau_channel *chan)
  70 {
  71         struct nouveau_context *nctx = chan->user_private;
  72         struct gl_context *ctx = &nctx->base;
  73
  74         if (nctx->fallback < SWRAST)
  75                 nouveau_bo_state_emit(ctx);
  76 }
  77
  78 GLboolean
  79 nouveau_context_create(gl_api api,
  80                        const struct gl_config *visual, __DRIcontext *dri_ctx,
  81                        void *share_ctx)
  82 {
  83         __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
  84         struct nouveau_screen *screen = dri_screen->private;
  85         struct nouveau_context *nctx;
  86         struct gl_context *ctx;
  87
  88         ctx = screen->driver->context_create(screen, visual, share_ctx);
  89         if (!ctx)
  90                 return GL_FALSE;
  91
  92         nctx = to_nouveau_context(ctx);
  93         nctx->dri_context = dri_ctx;
  94         dri_ctx->driverPrivate = ctx;
  95
  96         return GL_TRUE;
  97 }
  98
  99 GLboolean
 100 nouveau_context_init(struct gl_context *ctx, struct nouveau_screen *screen,
 101                      const struct gl_config *visual, struct gl_context *share_ctx)
 102 {
 103         struct nouveau_context *nctx = to_nouveau_context(ctx);
 104         struct dd_function_table functions;
 105         int ret;
 106
 107         nctx->screen = screen;
 108         nctx->fallback = HWTNL;
 109
 110         /* Initialize the function pointers. */
 111         _mesa_init_driver_functions(&functions);
 112         nouveau_driver_functions_init(&functions);
 113         nouveau_bufferobj_functions_init(&functions);
 114         nouveau_texture_functions_init(&functions);
 115         nouveau_fbo_functions_init(&functions);
 116
 117         /* Initialize the mesa context. */
 118         _mesa_initialize_context(ctx, visual, share_ctx, &functions, NULL);
 119
 120         nouveau_state_init(ctx);
 121         nouveau_bo_state_init(ctx);
 122         _mesa_meta_init(ctx);
 123         _swrast_CreateContext(ctx);
 124         _vbo_CreateContext(ctx);
 125         _tnl_CreateContext(ctx);
 126         nouveau_span_functions_init(ctx);
 127         _mesa_allow_light_in_model(ctx, GL_FALSE);
 128
 129         /* Allocate a hardware channel. */
 130         ret = nouveau_channel_alloc(context_dev(ctx), 0xbeef0201, 0xbeef0202,
 131                                     512*1024, &nctx->hw.chan);
 132         if (ret) {
 133                 nouveau_error("Error initializing the FIFO.\n");
 134                 return GL_FALSE;
 135         }
 136
 137         nctx->hw.chan->flush_notify = nouveau_channel_flush_notify;
 138         nctx->hw.chan->user_private = nctx;
 139
 140         /* Enable any supported extensions. */
 141         driInitExtensions(ctx, nouveau_extensions, GL_TRUE);
 142
 143         return GL_TRUE;
 144 }
 145
 146 void
 147 nouveau_context_deinit(struct gl_context *ctx)
 148 {
 149         struct nouveau_context *nctx = to_nouveau_context(ctx);
 150
 151         if (TNL_CONTEXT(ctx))
 152                 _tnl_DestroyContext(ctx);
 153
 154         if (vbo_context(ctx))
 155                 _vbo_DestroyContext(ctx);
 156
 157         if (SWRAST_CONTEXT(ctx))
 158                 _swrast_DestroyContext(ctx);
 159
 160         if (ctx->Meta)
 161                 _mesa_meta_free(ctx);
 162
 163         if (nctx->hw.chan)
 164                 nouveau_channel_free(&nctx->hw.chan);
 165
 166         nouveau_bo_state_destroy(ctx);
 167         _mesa_free_context_data(ctx);
 168 }
 169
 170 void
 171 nouveau_context_destroy(__DRIcontext *dri_ctx)
 172 {
 173         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 174         struct gl_context *ctx = &nctx->base;
 175
 176         context_drv(ctx)->context_destroy(ctx);
 177 }
 178
 179 void
 180 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 181 {
 182         struct gl_context *ctx = dri_ctx->driverPrivate;
 183         __DRIscreen *screen = dri_ctx->driScreenPriv;
 184         struct gl_framebuffer *fb = draw->driverPrivate;
 185         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 186         unsigned int attachments[10];
 187         __DRIbuffer *buffers = NULL;
 188         int i = 0, count, ret;
 189
 190         if (draw->lastStamp == *draw->pStamp)
 191                 return;
 192         draw->lastStamp = *draw->pStamp;
 193
 194         if (nfb->need_front)
 195                 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 196         if (fb->Visual.doubleBufferMode)
 197                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 198         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 199                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 200         else if (fb->Visual.haveDepthBuffer)
 201                 attachments[i++] = __DRI_BUFFER_DEPTH;
 202         else if (fb->Visual.haveStencilBuffer)
 203                 attachments[i++] = __DRI_BUFFER_STENCIL;
 204
 205         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 206                                                      attachments, i, &count,
 207                                                      draw->loaderPrivate);
 208         if (buffers == NULL)
 209                 return;
 210
 211         for (i = 0; i < count; i++) {
 212                 struct gl_renderbuffer *rb;
 213                 struct nouveau_surface *s;
 214                 int index;
 215
 216                 switch (buffers[i].attachment) {
 217                 case __DRI_BUFFER_FRONT_LEFT:
 218                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 219                         index = BUFFER_FRONT_LEFT;
 220                         break;
 221                 case __DRI_BUFFER_BACK_LEFT:
 222                         index = BUFFER_BACK_LEFT;
 223                         break;
 224                 case __DRI_BUFFER_DEPTH:
 225                 case __DRI_BUFFER_DEPTH_STENCIL:
 226                         index = BUFFER_DEPTH;
 227                         break;
 228                 case __DRI_BUFFER_STENCIL:
 229                         index = BUFFER_STENCIL;
 230                         break;
 231                 default:
 232                         assert(0);
 233                 }
 234
 235                 rb = fb->Attachment[index].Renderbuffer;
 236                 s = &to_nouveau_renderbuffer(rb)->surface;
 237
 238                 s->width = draw->w;
 239                 s->height = draw->h;
 240                 s->pitch = buffers[i].pitch;
 241                 s->cpp = buffers[i].cpp;
 242
 243                 nouveau_bo_ref(NULL, &s->bo);
 244                 ret = nouveau_bo_handle_ref(context_dev(ctx),
 245                                             buffers[i].name, &s->bo);
 246                 assert(!ret);
 247         }
 248
 249         _mesa_resize_framebuffer(NULL, fb, draw->w, draw->h);
 250 }
 251
 252 static void
 253 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 254                    int *stamp)
 255 {
 256         struct gl_context *ctx = dri_ctx->driverPrivate;
 257         struct gl_framebuffer *fb = draw->driverPrivate;
 258
 259         *stamp = *draw->pStamp;
 260
 261         nouveau_update_renderbuffers(dri_ctx, draw);
 262         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 263
 264         /* Clean up references to the old framebuffer objects. */
 265         context_dirty(ctx, FRAMEBUFFER);
 266         context_bctx(ctx, FRAMEBUFFER);
 267         FIRE_RING(context_chan(ctx));
 268 }
 269
 270 GLboolean
 271 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 272                              __DRIdrawable *dri_read)
 273 {
 274         if (dri_ctx) {
 275                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 276                 struct gl_context *ctx = &nctx->base;
 277
 278                 /* Ask the X server for new renderbuffers. */
 279                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 280                         update_framebuffer(dri_ctx, dri_draw,
 281                                            &dri_ctx->dri2.draw_stamp);
 282
 283                 if (dri_draw != dri_read &&
 284                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 285                         update_framebuffer(dri_ctx, dri_read,
 286                                            &dri_ctx->dri2.read_stamp);
 287
 288                 /* Pass it down to mesa. */
 289                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 290                                    dri_read->driverPrivate);
 291                 _mesa_update_state(ctx);
 292
 293         } else {
 294                 _mesa_make_current(NULL, NULL, NULL);
 295         }
 296
 297         return GL_TRUE;
 298 }
 299
 300 GLboolean
 301 nouveau_context_unbind(__DRIcontext *dri_ctx)
 302 {
 303         /* Unset current context and dispath table */
 304         _mesa_make_current(NULL, NULL, NULL);
 305
 306         return GL_TRUE;
 307 }
 308
 309 void
 310 nouveau_fallback(struct gl_context *ctx, enum nouveau_fallback mode)
 311 {
 312         struct nouveau_context *nctx = to_nouveau_context(ctx);
 313
 314         nctx->fallback = MAX2(HWTNL, mode);
 315
 316         if (mode < SWRAST)
 317                 nouveau_state_emit(ctx);
 318         else
 319                 FIRE_RING(context_chan(ctx));
 320 }
 321
 322 static void
 323 validate_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 324                      int *stamp)
 325 {
 326         struct gl_framebuffer *fb = draw->driverPrivate;
 327         struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
 328         GLboolean need_front =
 329                 (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT ||
 330                  fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT);
 331
 332         if (nfb->need_front != need_front) {
 333                 nfb->need_front = need_front;
 334                 dri2InvalidateDrawable(draw);
 335         }
 336
 337         if (*draw->pStamp != *stamp)
 338                 update_framebuffer(dri_ctx, draw, stamp);
 339 }
 340
 341 void
 342 nouveau_validate_framebuffer(struct gl_context *ctx)
 343 {
 344         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 345         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 346         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 347
 348         if (ctx->DrawBuffer->Name == 0)
 349                 validate_framebuffer(dri_ctx, dri_draw,
 350                                      &dri_ctx->dri2.draw_stamp);
 351
 352         if (ctx->ReadBuffer->Name == 0)
 353                 validate_framebuffer(dri_ctx, dri_read,
 354                                      &dri_ctx->dri2.read_stamp);
 355
 356         nouveau_state_emit(ctx);
 357 }