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_blit",    NULL },
  58         { "GL_EXT_framebuffer_object",  GL_EXT_framebuffer_object_functions },
  59         { "GL_EXT_secondary_color",     GL_EXT_secondary_color_functions },
  60         { "GL_EXT_stencil_wrap",        NULL },
  61         { "GL_EXT_texture_lod_bias",    NULL },
  62         { "GL_NV_blend_square",         NULL },
  63         { "GL_SGIS_generate_mipmap",    NULL },
  64         { NULL,                         NULL }
  65 };
  66
  67 static void
  68 nouveau_channel_flush_notify(struct nouveau_channel *chan)
  69 {
  70         struct nouveau_context *nctx = chan->user_private;
  71         GLcontext *ctx = &nctx->base;
  72
  73         if (nctx->fallback < SWRAST)
  74                 nouveau_bo_state_emit(ctx);
  75 }
  76
  77 GLboolean
  78 nouveau_context_create(const __GLcontextModes *visual, __DRIcontext *dri_ctx,
  79                        void *share_ctx)
  80 {
  81         __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
  82         struct nouveau_screen *screen = dri_screen->private;
  83         struct nouveau_context *nctx;
  84         GLcontext *ctx;
  85
  86         ctx = screen->driver->context_create(screen, visual, share_ctx);
  87         if (!ctx)
  88                 return GL_FALSE;
  89
  90         nctx = to_nouveau_context(ctx);
  91         nctx->dri_context = dri_ctx;
  92         dri_ctx->driverPrivate = ctx;
  93
  94         return GL_TRUE;
  95 }
  96
  97 GLboolean
  98 nouveau_context_init(GLcontext *ctx, struct nouveau_screen *screen,
  99                      const GLvisual *visual, GLcontext *share_ctx)
 100 {
 101         struct nouveau_context *nctx = to_nouveau_context(ctx);
 102         struct dd_function_table functions;
 103         int ret;
 104
 105         nctx->screen = screen;
 106         nctx->fallback = HWTNL;
 107
 108         /* Initialize the function pointers. */
 109         _mesa_init_driver_functions(&functions);
 110         nouveau_driver_functions_init(&functions);
 111         nouveau_bufferobj_functions_init(&functions);
 112         nouveau_texture_functions_init(&functions);
 113         nouveau_fbo_functions_init(&functions);
 114
 115         /* Initialize the mesa context. */
 116         _mesa_initialize_context(ctx, visual, share_ctx, &functions, NULL);
 117
 118         nouveau_state_init(ctx);
 119         nouveau_bo_state_init(ctx);
 120         _mesa_meta_init(ctx);
 121         _swrast_CreateContext(ctx);
 122         _vbo_CreateContext(ctx);
 123         _tnl_CreateContext(ctx);
 124         nouveau_span_functions_init(ctx);
 125         _mesa_allow_light_in_model(ctx, GL_FALSE);
 126
 127         /* Allocate a hardware channel. */
 128         ret = nouveau_channel_alloc(context_dev(ctx), 0xbeef0201, 0xbeef0202,
 129                                     &nctx->hw.chan);
 130         if (ret) {
 131                 nouveau_error("Error initializing the FIFO.\n");
 132                 return GL_FALSE;
 133         }
 134
 135         nctx->hw.chan->flush_notify = nouveau_channel_flush_notify;
 136         nctx->hw.chan->user_private = nctx;
 137
 138         /* Enable any supported extensions. */
 139         driInitExtensions(ctx, nouveau_extensions, GL_TRUE);
 140
 141         return GL_TRUE;
 142 }
 143
 144 void
 145 nouveau_context_deinit(GLcontext *ctx)
 146 {
 147         struct nouveau_context *nctx = to_nouveau_context(ctx);
 148
 149         if (TNL_CONTEXT(ctx))
 150                 _tnl_DestroyContext(ctx);
 151
 152         if (vbo_context(ctx))
 153                 _vbo_DestroyContext(ctx);
 154
 155         if (SWRAST_CONTEXT(ctx))
 156                 _swrast_DestroyContext(ctx);
 157
 158         if (ctx->Meta)
 159                 _mesa_meta_free(ctx);
 160
 161         if (nctx->hw.chan)
 162                 nouveau_channel_free(&nctx->hw.chan);
 163
 164         nouveau_bo_state_destroy(ctx);
 165         _mesa_free_context_data(ctx);
 166 }
 167
 168 void
 169 nouveau_context_destroy(__DRIcontext *dri_ctx)
 170 {
 171         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 172         GLcontext *ctx = &nctx->base;
 173
 174         context_drv(ctx)->context_destroy(ctx);
 175 }
 176
 177 void
 178 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 179 {
 180         GLcontext *ctx = dri_ctx->driverPrivate;
 181         __DRIscreen *screen = dri_ctx->driScreenPriv;
 182         struct gl_framebuffer *fb = draw->driverPrivate;
 183         unsigned int attachments[10];
 184         __DRIbuffer *buffers = NULL;
 185         int i = 0, count, ret;
 186
 187         if (draw->lastStamp == *draw->pStamp)
 188                 return;
 189         draw->lastStamp = *draw->pStamp;
 190
 191         attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 192         if (fb->Visual.doubleBufferMode)
 193                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 194         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 195                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 196         else if (fb->Visual.haveDepthBuffer)
 197                 attachments[i++] = __DRI_BUFFER_DEPTH;
 198         else if (fb->Visual.haveStencilBuffer)
 199                 attachments[i++] = __DRI_BUFFER_STENCIL;
 200
 201         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 202                                                      attachments, i, &count,
 203                                                      draw->loaderPrivate);
 204         if (buffers == NULL)
 205                 return;
 206
 207         for (i = 0; i < count; i++) {
 208                 struct gl_renderbuffer *rb;
 209                 struct nouveau_surface *s;
 210                 uint32_t old_handle;
 211                 int index;
 212
 213                 switch (buffers[i].attachment) {
 214                 case __DRI_BUFFER_FRONT_LEFT:
 215                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 216                         index = BUFFER_FRONT_LEFT;
 217                         break;
 218                 case __DRI_BUFFER_BACK_LEFT:
 219                         index = BUFFER_BACK_LEFT;
 220                         break;
 221                 case __DRI_BUFFER_DEPTH:
 222                 case __DRI_BUFFER_DEPTH_STENCIL:
 223                         index = BUFFER_DEPTH;
 224                         break;
 225                 case __DRI_BUFFER_STENCIL:
 226                         index = BUFFER_STENCIL;
 227                         break;
 228                 default:
 229                         assert(0);
 230                 }
 231
 232                 rb = fb->Attachment[index].Renderbuffer;
 233                 s = &to_nouveau_renderbuffer(rb)->surface;
 234
 235                 s->width = draw->w;
 236                 s->height = draw->h;
 237                 s->pitch = buffers[i].pitch;
 238                 s->cpp = buffers[i].cpp;
 239
 240                 /* Don't bother to reopen the bo if it happens to be
 241                  * the same. */
 242                 if (s->bo) {
 243                         ret = nouveau_bo_handle_get(s->bo, &old_handle);
 244                         assert(!ret);
 245                 }
 246
 247                 if (!s->bo || old_handle != buffers[i].name) {
 248                         nouveau_bo_ref(NULL, &s->bo);
 249                         ret = nouveau_bo_handle_ref(context_dev(ctx),
 250                                                     buffers[i].name, &s->bo);
 251                         assert(!ret);
 252                 }
 253         }
 254
 255         _mesa_resize_framebuffer(NULL, fb, draw->w, draw->h);
 256 }
 257
 258 static void
 259 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 260                    int *stamp)
 261 {
 262         GLcontext *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         context_dirty(ctx, FRAMEBUFFER);
 271 }
 272
 273 GLboolean
 274 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 275                              __DRIdrawable *dri_read)
 276 {
 277         if (dri_ctx) {
 278                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 279                 GLcontext *ctx = &nctx->base;
 280
 281                 /* Ask the X server for new renderbuffers. */
 282                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 283                         update_framebuffer(dri_ctx, dri_draw,
 284                                            &dri_ctx->dri2.draw_stamp);
 285
 286                 if (dri_draw != dri_read &&
 287                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 288                         update_framebuffer(dri_ctx, dri_read,
 289                                            &dri_ctx->dri2.read_stamp);
 290
 291                 /* Pass it down to mesa. */
 292                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 293                                    dri_read->driverPrivate);
 294                 _mesa_update_state(ctx);
 295
 296                 FIRE_RING(context_chan(ctx));
 297
 298         } else {
 299                 _mesa_make_current(NULL, NULL, NULL);
 300         }
 301
 302         return GL_TRUE;
 303 }
 304
 305 GLboolean
 306 nouveau_context_unbind(__DRIcontext *dri_ctx)
 307 {
 308         return GL_TRUE;
 309 }
 310
 311 void
 312 nouveau_fallback(GLcontext *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         else
 321                 FIRE_RING(context_chan(ctx));
 322 }
 323
 324 void
 325 nouveau_validate_framebuffer(GLcontext *ctx)
 326 {
 327         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 328         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 329         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 330
 331         if (ctx->DrawBuffer->Name == 0 &&
 332             dri_ctx->dri2.draw_stamp != *dri_draw->pStamp)
 333                 update_framebuffer(dri_ctx, dri_draw,
 334                                    &dri_ctx->dri2.draw_stamp);
 335
 336         if (ctx->ReadBuffer->Name == 0 && dri_draw != dri_read &&
 337             dri_ctx->dri2.read_stamp != *dri_read->pStamp)
 338                 update_framebuffer(dri_ctx, dri_read,
 339                                    &dri_ctx->dri2.read_stamp);
 340
 341         if (nouveau_next_dirty_state(ctx) >= 0) {
 342                 nouveau_state_emit(ctx);
 343                 FIRE_RING(context_chan(ctx));
 344         }
 345 }