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_secondary_color",     GL_EXT_secondary_color_functions },
  58         { "GL_EXT_stencil_wrap",        NULL },
  59         { "GL_EXT_texture_env_combine", NULL },
  60         { "GL_EXT_texture_lod_bias",    NULL },
  61         { "GL_NV_blend_square",         NULL },
  62         { "GL_NV_texture_env_combine4", 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(gl_api api,
  79                        const __GLcontextModes *visual, __DRIcontext *dri_ctx,
  80                        void *share_ctx)
  81 {
  82         __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
  83         struct nouveau_screen *screen = dri_screen->private;
  84         struct nouveau_context *nctx;
  85         GLcontext *ctx;
  86
  87         ctx = screen->driver->context_create(screen, visual, share_ctx);
  88         if (!ctx)
  89                 return GL_FALSE;
  90
  91         nctx = to_nouveau_context(ctx);
  92         nctx->dri_context = dri_ctx;
  93         dri_ctx->driverPrivate = ctx;
  94
  95         return GL_TRUE;
  96 }
  97
  98 GLboolean
  99 nouveau_context_init(GLcontext *ctx, struct nouveau_screen *screen,
 100                      const GLvisual *visual, GLcontext *share_ctx)
 101 {
 102         struct nouveau_context *nctx = to_nouveau_context(ctx);
 103         struct dd_function_table functions;
 104         int ret;
 105
 106         nctx->screen = screen;
 107         nctx->fallback = HWTNL;
 108
 109         /* Initialize the function pointers. */
 110         _mesa_init_driver_functions(&functions);
 111         nouveau_driver_functions_init(&functions);
 112         nouveau_bufferobj_functions_init(&functions);
 113         nouveau_texture_functions_init(&functions);
 114         nouveau_fbo_functions_init(&functions);
 115
 116         /* Initialize the mesa context. */
 117         _mesa_initialize_context(ctx, visual, share_ctx, &functions, NULL);
 118
 119         nouveau_state_init(ctx);
 120         nouveau_bo_state_init(ctx);
 121         _mesa_meta_init(ctx);
 122         _swrast_CreateContext(ctx);
 123         _vbo_CreateContext(ctx);
 124         _tnl_CreateContext(ctx);
 125         nouveau_span_functions_init(ctx);
 126         _mesa_allow_light_in_model(ctx, GL_FALSE);
 127
 128         /* Allocate a hardware channel. */
 129         ret = nouveau_channel_alloc(context_dev(ctx), 0xbeef0201, 0xbeef0202,
 130                                     &nctx->hw.chan);
 131         if (ret) {
 132                 nouveau_error("Error initializing the FIFO.\n");
 133                 return GL_FALSE;
 134         }
 135
 136         nctx->hw.chan->flush_notify = nouveau_channel_flush_notify;
 137         nctx->hw.chan->user_private = nctx;
 138
 139         /* Enable any supported extensions. */
 140         driInitExtensions(ctx, nouveau_extensions, GL_TRUE);
 141
 142         return GL_TRUE;
 143 }
 144
 145 void
 146 nouveau_context_deinit(GLcontext *ctx)
 147 {
 148         struct nouveau_context *nctx = to_nouveau_context(ctx);
 149
 150         if (TNL_CONTEXT(ctx))
 151                 _tnl_DestroyContext(ctx);
 152
 153         if (vbo_context(ctx))
 154                 _vbo_DestroyContext(ctx);
 155
 156         if (SWRAST_CONTEXT(ctx))
 157                 _swrast_DestroyContext(ctx);
 158
 159         if (ctx->Meta)
 160                 _mesa_meta_free(ctx);
 161
 162         if (nctx->hw.chan)
 163                 nouveau_channel_free(&nctx->hw.chan);
 164
 165         nouveau_bo_state_destroy(ctx);
 166         _mesa_free_context_data(ctx);
 167 }
 168
 169 void
 170 nouveau_context_destroy(__DRIcontext *dri_ctx)
 171 {
 172         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 173         GLcontext *ctx = &nctx->base;
 174
 175         context_drv(ctx)->context_destroy(ctx);
 176 }
 177
 178 void
 179 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 180 {
 181         GLcontext *ctx = dri_ctx->driverPrivate;
 182         __DRIscreen *screen = dri_ctx->driScreenPriv;
 183         struct gl_framebuffer *fb = draw->driverPrivate;
 184         unsigned int attachments[10];
 185         __DRIbuffer *buffers = NULL;
 186         int i = 0, count, ret;
 187
 188         if (draw->lastStamp == *draw->pStamp)
 189                 return;
 190         draw->lastStamp = *draw->pStamp;
 191
 192         attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 193         if (fb->Visual.doubleBufferMode)
 194                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 195         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 196                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 197         else if (fb->Visual.haveDepthBuffer)
 198                 attachments[i++] = __DRI_BUFFER_DEPTH;
 199         else if (fb->Visual.haveStencilBuffer)
 200                 attachments[i++] = __DRI_BUFFER_STENCIL;
 201
 202         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 203                                                      attachments, i, &count,
 204                                                      draw->loaderPrivate);
 205         if (buffers == NULL)
 206                 return;
 207
 208         for (i = 0; i < count; i++) {
 209                 struct gl_renderbuffer *rb;
 210                 struct nouveau_surface *s;
 211                 uint32_t old_handle;
 212                 int index;
 213
 214                 switch (buffers[i].attachment) {
 215                 case __DRI_BUFFER_FRONT_LEFT:
 216                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 217                         index = BUFFER_FRONT_LEFT;
 218                         break;
 219                 case __DRI_BUFFER_BACK_LEFT:
 220                         index = BUFFER_BACK_LEFT;
 221                         break;
 222                 case __DRI_BUFFER_DEPTH:
 223                 case __DRI_BUFFER_DEPTH_STENCIL:
 224                         index = BUFFER_DEPTH;
 225                         break;
 226                 case __DRI_BUFFER_STENCIL:
 227                         index = BUFFER_STENCIL;
 228                         break;
 229                 default:
 230                         assert(0);
 231                 }
 232
 233                 rb = fb->Attachment[index].Renderbuffer;
 234                 s = &to_nouveau_renderbuffer(rb)->surface;
 235
 236                 s->width = draw->w;
 237                 s->height = draw->h;
 238                 s->pitch = buffers[i].pitch;
 239                 s->cpp = buffers[i].cpp;
 240
 241                 /* Don't bother to reopen the bo if it happens to be
 242                  * the same. */
 243                 if (s->bo) {
 244                         ret = nouveau_bo_handle_get(s->bo, &old_handle);
 245                         assert(!ret);
 246                 }
 247
 248                 if (!s->bo || old_handle != buffers[i].name) {
 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
 256         _mesa_resize_framebuffer(NULL, fb, draw->w, draw->h);
 257 }
 258
 259 static void
 260 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 261                    int *stamp)
 262 {
 263         GLcontext *ctx = dri_ctx->driverPrivate;
 264         struct gl_framebuffer *fb = draw->driverPrivate;
 265
 266         *stamp = *draw->pStamp;
 267
 268         nouveau_update_renderbuffers(dri_ctx, draw);
 269         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 270
 271         context_dirty(ctx, FRAMEBUFFER);
 272 }
 273
 274 GLboolean
 275 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 276                              __DRIdrawable *dri_read)
 277 {
 278         if (dri_ctx) {
 279                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 280                 GLcontext *ctx = &nctx->base;
 281
 282                 /* Ask the X server for new renderbuffers. */
 283                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 284                         update_framebuffer(dri_ctx, dri_draw,
 285                                            &dri_ctx->dri2.draw_stamp);
 286
 287                 if (dri_draw != dri_read &&
 288                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 289                         update_framebuffer(dri_ctx, dri_read,
 290                                            &dri_ctx->dri2.read_stamp);
 291
 292                 /* Pass it down to mesa. */
 293                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 294                                    dri_read->driverPrivate);
 295                 _mesa_update_state(ctx);
 296
 297                 FIRE_RING(context_chan(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 dispath table */
 310         _mesa_make_current(NULL, NULL, NULL);
 311
 312         return GL_TRUE;
 313 }
 314
 315 void
 316 nouveau_fallback(GLcontext *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         else
 325                 FIRE_RING(context_chan(ctx));
 326 }
 327
 328 void
 329 nouveau_validate_framebuffer(GLcontext *ctx)
 330 {
 331         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 332         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 333         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 334
 335         if (ctx->DrawBuffer->Name == 0 &&
 336             dri_ctx->dri2.draw_stamp != *dri_draw->pStamp)
 337                 update_framebuffer(dri_ctx, dri_draw,
 338                                    &dri_ctx->dri2.draw_stamp);
 339
 340         if (ctx->ReadBuffer->Name == 0 && dri_draw != dri_read &&
 341             dri_ctx->dri2.read_stamp != *dri_read->pStamp)
 342                 update_framebuffer(dri_ctx, dri_read,
 343                                    &dri_ctx->dri2.read_stamp);
 344
 345         if (nouveau_next_dirty_state(ctx) >= 0) {
 346                 nouveau_state_emit(ctx);
 347                 FIRE_RING(context_chan(ctx));
 348         }
 349 }