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_env_combine", NULL },
  54         { "GL_ARB_texture_env_dot3",    NULL },
  55         { "GL_ARB_texture_mirrored_repeat", NULL },
  56         { "GL_EXT_fog_coord",           GL_EXT_fog_coord_functions },
  57         { "GL_EXT_framebuffer_object",  GL_EXT_framebuffer_object_functions },
  58         { "GL_EXT_secondary_color",     GL_EXT_secondary_color_functions },
  59         { "GL_EXT_stencil_wrap",        NULL },
  60         { "GL_EXT_texture_lod_bias",    NULL },
  61         { "GL_NV_blend_square",         NULL },
  62         { "GL_SGIS_generate_mipmap",    NULL },
  63         { NULL,                         NULL }
  64 };
  65
  66 static void
  67 nouveau_channel_flush_notify(struct nouveau_channel *chan)
  68 {
  69         struct nouveau_context *nctx = chan->user_private;
  70         GLcontext *ctx = &nctx->base;
  71
  72         if (nctx->fallback < SWRAST)
  73                 nouveau_bo_state_emit(ctx);
  74 }
  75
  76 GLboolean
  77 nouveau_context_create(const __GLcontextModes *visual, __DRIcontext *dri_ctx,
  78                        void *share_ctx)
  79 {
  80         __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
  81         struct nouveau_screen *screen = dri_screen->private;
  82         struct nouveau_context *nctx;
  83         GLcontext *ctx;
  84
  85         ctx = screen->driver->context_create(screen, visual, share_ctx);
  86         if (!ctx)
  87                 return GL_FALSE;
  88
  89         nctx = to_nouveau_context(ctx);
  90         nctx->dri_context = dri_ctx;
  91         dri_ctx->driverPrivate = ctx;
  92
  93         return GL_TRUE;
  94 }
  95
  96 GLboolean
  97 nouveau_context_init(GLcontext *ctx, struct nouveau_screen *screen,
  98                      const GLvisual *visual, GLcontext *share_ctx)
  99 {
 100         struct nouveau_context *nctx = to_nouveau_context(ctx);
 101         struct dd_function_table functions;
 102         int ret;
 103
 104         nctx->screen = screen;
 105         nctx->fallback = HWTNL;
 106
 107         /* Initialize the function pointers. */
 108         _mesa_init_driver_functions(&functions);
 109         nouveau_driver_functions_init(&functions);
 110         nouveau_bufferobj_functions_init(&functions);
 111         nouveau_texture_functions_init(&functions);
 112         nouveau_fbo_functions_init(&functions);
 113
 114         /* Initialize the mesa context. */
 115         _mesa_initialize_context(ctx, visual, share_ctx, &functions, NULL);
 116
 117         nouveau_state_init(ctx);
 118         nouveau_bo_state_init(ctx);
 119         _mesa_meta_init(ctx);
 120         _swrast_CreateContext(ctx);
 121         _vbo_CreateContext(ctx);
 122         _tnl_CreateContext(ctx);
 123         nouveau_span_functions_init(ctx);
 124         _mesa_allow_light_in_model(ctx, GL_FALSE);
 125
 126         /* Allocate a hardware channel. */
 127         ret = nouveau_channel_alloc(context_dev(ctx), 0xbeef0201, 0xbeef0202,
 128                                     &nctx->hw.chan);
 129         if (ret) {
 130                 nouveau_error("Error initializing the FIFO.\n");
 131                 return GL_FALSE;
 132         }
 133
 134         nctx->hw.chan->flush_notify = nouveau_channel_flush_notify;
 135         nctx->hw.chan->user_private = nctx;
 136
 137         /* Enable any supported extensions. */
 138         driInitExtensions(ctx, nouveau_extensions, GL_TRUE);
 139
 140         return GL_TRUE;
 141 }
 142
 143 void
 144 nouveau_context_deinit(GLcontext *ctx)
 145 {
 146         struct nouveau_context *nctx = to_nouveau_context(ctx);
 147
 148         if (TNL_CONTEXT(ctx))
 149                 _tnl_DestroyContext(ctx);
 150
 151         if (vbo_context(ctx))
 152                 _vbo_DestroyContext(ctx);
 153
 154         if (SWRAST_CONTEXT(ctx))
 155                 _swrast_DestroyContext(ctx);
 156
 157         if (ctx->Meta)
 158                 _mesa_meta_free(ctx);
 159
 160         if (nctx->hw.chan)
 161                 nouveau_channel_free(&nctx->hw.chan);
 162
 163         nouveau_bo_state_destroy(ctx);
 164         _mesa_free_context_data(ctx);
 165 }
 166
 167 void
 168 nouveau_context_destroy(__DRIcontext *dri_ctx)
 169 {
 170         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 171         GLcontext *ctx = &nctx->base;
 172
 173         context_drv(ctx)->context_destroy(ctx);
 174 }
 175
 176 void
 177 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 178 {
 179         GLcontext *ctx = dri_ctx->driverPrivate;
 180         __DRIscreen *screen = dri_ctx->driScreenPriv;
 181         struct gl_framebuffer *fb = draw->driverPrivate;
 182         unsigned int attachments[10];
 183         __DRIbuffer *buffers = NULL;
 184         int i = 0, count, ret;
 185
 186         if (draw->lastStamp == *draw->pStamp)
 187                 return;
 188         draw->lastStamp = *draw->pStamp;
 189
 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_handle;
 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                 /* Don't bother to reopen the bo if it happens to be
 240                  * the same. */
 241                 if (s->bo) {
 242                         ret = nouveau_bo_handle_get(s->bo, &old_handle);
 243                         assert(!ret);
 244                 }
 245
 246                 if (!s->bo || old_handle != buffers[i].name) {
 247                         nouveau_bo_ref(NULL, &s->bo);
 248                         ret = nouveau_bo_handle_ref(context_dev(ctx),
 249                                                     buffers[i].name, &s->bo);
 250                         assert(!ret);
 251                 }
 252         }
 253
 254         _mesa_resize_framebuffer(NULL, fb, draw->w, draw->h);
 255 }
 256
 257 static void
 258 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 259                    int *stamp)
 260 {
 261         GLcontext *ctx = dri_ctx->driverPrivate;
 262         struct gl_framebuffer *fb = draw->driverPrivate;
 263
 264         *stamp = *draw->pStamp;
 265
 266         nouveau_update_renderbuffers(dri_ctx, draw);
 267         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 268
 269         context_dirty(ctx, FRAMEBUFFER);
 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                 GLcontext *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                 FIRE_RING(context_chan(ctx));
 296
 297         } else {
 298                 _mesa_make_current(NULL, NULL, NULL);
 299         }
 300
 301         return GL_TRUE;
 302 }
 303
 304 GLboolean
 305 nouveau_context_unbind(__DRIcontext *dri_ctx)
 306 {
 307         return GL_TRUE;
 308 }
 309
 310 void
 311 nouveau_fallback(GLcontext *ctx, enum nouveau_fallback mode)
 312 {
 313         struct nouveau_context *nctx = to_nouveau_context(ctx);
 314
 315         nctx->fallback = MAX2(HWTNL, mode);
 316
 317         if (mode < SWRAST)
 318                 nouveau_state_emit(ctx);
 319         else
 320                 FIRE_RING(context_chan(ctx));
 321 }
 322
 323 void
 324 nouveau_validate_framebuffer(GLcontext *ctx)
 325 {
 326         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 327         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 328         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 329
 330         if (ctx->DrawBuffer->Name == 0 &&
 331             dri_ctx->dri2.draw_stamp != *dri_draw->pStamp)
 332                 update_framebuffer(dri_ctx, dri_draw,
 333                                    &dri_ctx->dri2.draw_stamp);
 334
 335         if (ctx->ReadBuffer->Name == 0 && dri_draw != dri_read &&
 336             dri_ctx->dri2.read_stamp != *dri_read->pStamp)
 337                 update_framebuffer(dri_ctx, dri_read,
 338                                    &dri_ctx->dri2.read_stamp);
 339
 340         if (nouveau_next_dirty_state(ctx) >= 0)
 341                 FIRE_RING(context_chan(ctx));
 342 }