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
  47 #include "main/remap_helper.h"
  48
  49 static const struct dri_extension nouveau_extensions[] = {
  50         { "GL_EXT_framebuffer_object",  GL_EXT_framebuffer_object_functions },
  51         { "GL_ARB_multitexture",        NULL },
  52         { "GL_EXT_texture_lod_bias",    NULL },
  53         { "GL_SGIS_generate_mipmap",    NULL },
  54         { "GL_ARB_texture_env_combine", NULL },
  55         { "GL_ARB_texture_env_dot3",    NULL },
  56         { "GL_ARB_texture_env_add",     NULL },
  57         { "GL_EXT_fog_coord",           GL_EXT_fog_coord_functions },
  58         { NULL,                         NULL }
  59 };
  60
  61 static void
  62 nouveau_channel_flush_notify(struct nouveau_channel *chan)
  63 {
  64         struct nouveau_context *nctx = chan->user_private;
  65         GLcontext *ctx = &nctx->base;
  66
  67         if (nctx->fallback < SWRAST && ctx->DrawBuffer)
  68                 nouveau_state_emit(&nctx->base);
  69 }
  70
  71 GLboolean
  72 nouveau_context_create(const __GLcontextModes *visual, __DRIcontext *dri_ctx,
  73                        void *share_ctx)
  74 {
  75         __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
  76         struct nouveau_screen *screen = dri_screen->private;
  77         struct nouveau_context *nctx;
  78         GLcontext *ctx;
  79
  80         ctx = screen->driver->context_create(screen, visual, share_ctx);
  81         if (!ctx)
  82                 return GL_FALSE;
  83
  84         nctx = to_nouveau_context(ctx);
  85         nctx->dri_context = dri_ctx;
  86         dri_ctx->driverPrivate = ctx;
  87
  88         return GL_TRUE;
  89 }
  90
  91 GLboolean
  92 nouveau_context_init(GLcontext *ctx, struct nouveau_screen *screen,
  93                      const GLvisual *visual, GLcontext *share_ctx)
  94 {
  95         struct nouveau_context *nctx = to_nouveau_context(ctx);
  96         struct dd_function_table functions;
  97         int ret;
  98
  99         nctx->screen = screen;
 100         nctx->fallback = HWTNL;
 101
 102         /* Initialize the function pointers. */
 103         _mesa_init_driver_functions(&functions);
 104         nouveau_driver_functions_init(&functions);
 105         nouveau_bufferobj_functions_init(&functions);
 106         nouveau_texture_functions_init(&functions);
 107         nouveau_fbo_functions_init(&functions);
 108
 109         /* Initialize the mesa context. */
 110         _mesa_initialize_context(ctx, visual, share_ctx, &functions, NULL);
 111
 112         nouveau_state_init(ctx);
 113         nouveau_bo_state_init(ctx);
 114         _mesa_meta_init(ctx);
 115         _swrast_CreateContext(ctx);
 116         _vbo_CreateContext(ctx);
 117         _tnl_CreateContext(ctx);
 118         nouveau_span_functions_init(ctx);
 119         _mesa_allow_light_in_model(ctx, GL_FALSE);
 120
 121         /* Allocate a hardware channel. */
 122         ret = nouveau_channel_alloc(context_dev(ctx), 0xbeef0201, 0xbeef0202,
 123                                     &nctx->hw.chan);
 124         if (ret) {
 125                 nouveau_error("Error initializing the FIFO.\n");
 126                 return GL_FALSE;
 127         }
 128
 129         nctx->hw.chan->flush_notify = nouveau_channel_flush_notify;
 130         nctx->hw.chan->user_private = nctx;
 131
 132         /* Enable any supported extensions. */
 133         driInitExtensions(ctx, nouveau_extensions, GL_TRUE);
 134
 135         return GL_TRUE;
 136 }
 137
 138 void
 139 nouveau_context_deinit(GLcontext *ctx)
 140 {
 141         struct nouveau_context *nctx = to_nouveau_context(ctx);
 142
 143         if (TNL_CONTEXT(ctx))
 144                 _tnl_DestroyContext(ctx);
 145
 146         if (vbo_context(ctx))
 147                 _vbo_DestroyContext(ctx);
 148
 149         if (SWRAST_CONTEXT(ctx))
 150                 _swrast_DestroyContext(ctx);
 151
 152         if (ctx->Meta)
 153                 _mesa_meta_free(ctx);
 154
 155         if (nctx->hw.chan)
 156                 nouveau_channel_free(&nctx->hw.chan);
 157
 158         nouveau_bo_state_destroy(ctx);
 159         _mesa_free_context_data(ctx);
 160 }
 161
 162 void
 163 nouveau_context_destroy(__DRIcontext *dri_ctx)
 164 {
 165         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 166         GLcontext *ctx = &nctx->base;
 167
 168         context_drv(ctx)->context_destroy(ctx);
 169 }
 170
 171 void
 172 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 173 {
 174         GLcontext *ctx = dri_ctx->driverPrivate;
 175         __DRIscreen *screen = dri_ctx->driScreenPriv;
 176         struct gl_framebuffer *fb = draw->driverPrivate;
 177         unsigned int attachments[10];
 178         __DRIbuffer *buffers = NULL;
 179         int i = 0, count, ret;
 180
 181         if (draw->lastStamp == *draw->pStamp)
 182                 return;
 183         draw->lastStamp = *draw->pStamp;
 184
 185         attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 186         if (fb->Visual.doubleBufferMode)
 187                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 188         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 189                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 190         else if (fb->Visual.haveDepthBuffer)
 191                 attachments[i++] = __DRI_BUFFER_DEPTH;
 192         else if (fb->Visual.haveStencilBuffer)
 193                 attachments[i++] = __DRI_BUFFER_STENCIL;
 194
 195         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 196                                                      attachments, i, &count,
 197                                                      draw->loaderPrivate);
 198         if (buffers == NULL)
 199                 return;
 200
 201         for (i = 0; i < count; i++) {
 202                 struct gl_renderbuffer *rb;
 203                 struct nouveau_surface *s;
 204                 uint32_t old_handle;
 205                 int index;
 206
 207                 switch (buffers[i].attachment) {
 208                 case __DRI_BUFFER_FRONT_LEFT:
 209                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 210                         index = BUFFER_FRONT_LEFT;
 211                         break;
 212                 case __DRI_BUFFER_BACK_LEFT:
 213                         index = BUFFER_BACK_LEFT;
 214                         break;
 215                 case __DRI_BUFFER_DEPTH:
 216                 case __DRI_BUFFER_DEPTH_STENCIL:
 217                         index = BUFFER_DEPTH;
 218                         break;
 219                 case __DRI_BUFFER_STENCIL:
 220                         index = BUFFER_STENCIL;
 221                         break;
 222                 default:
 223                         assert(0);
 224                 }
 225
 226                 rb = fb->Attachment[index].Renderbuffer;
 227                 s = &to_nouveau_renderbuffer(rb)->surface;
 228
 229                 s->width = draw->w;
 230                 s->height = draw->h;
 231                 s->pitch = buffers[i].pitch;
 232                 s->cpp = buffers[i].cpp;
 233
 234                 /* Don't bother to reopen the bo if it happens to be
 235                  * the same. */
 236                 if (s->bo) {
 237                         ret = nouveau_bo_handle_get(s->bo, &old_handle);
 238                         assert(!ret);
 239                 }
 240
 241                 if (!s->bo || old_handle != buffers[i].name) {
 242                         nouveau_bo_ref(NULL, &s->bo);
 243                         ret = nouveau_bo_handle_ref(context_dev(ctx),
 244                                                     buffers[i].name, &s->bo);
 245                         assert(!ret);
 246                 }
 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         GLcontext *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         context_dirty(ctx, FRAMEBUFFER);
 265 }
 266
 267 GLboolean
 268 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 269                              __DRIdrawable *dri_read)
 270 {
 271         if (dri_ctx) {
 272                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 273                 GLcontext *ctx = &nctx->base;
 274
 275                 /* Ask the X server for new renderbuffers. */
 276                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 277                         update_framebuffer(dri_ctx, dri_draw,
 278                                            &dri_ctx->dri2.draw_stamp);
 279
 280                 if (dri_draw != dri_read &&
 281                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 282                         update_framebuffer(dri_ctx, dri_read,
 283                                            &dri_ctx->dri2.read_stamp);
 284
 285                 /* Pass it down to mesa. */
 286                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 287                                    dri_read->driverPrivate);
 288                 _mesa_update_state(ctx);
 289
 290                 FIRE_RING(context_chan(ctx));
 291
 292         } else {
 293                 _mesa_make_current(NULL, NULL, NULL);
 294         }
 295
 296         return GL_TRUE;
 297 }
 298
 299 GLboolean
 300 nouveau_context_unbind(__DRIcontext *dri_ctx)
 301 {
 302         return GL_TRUE;
 303 }
 304
 305 void
 306 nouveau_fallback(GLcontext *ctx, enum nouveau_fallback mode)
 307 {
 308         struct nouveau_context *nctx = to_nouveau_context(ctx);
 309
 310         nctx->fallback = MAX2(HWTNL, mode);
 311
 312         if (mode < SWRAST)
 313                 nouveau_state_emit(ctx);
 314         else
 315                 FIRE_RING(context_chan(ctx));
 316 }
 317
 318 void
 319 nouveau_validate_framebuffer(GLcontext *ctx)
 320 {
 321         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 322         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 323         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 324
 325         if (ctx->DrawBuffer->Name == 0 &&
 326             dri_ctx->dri2.draw_stamp != *dri_draw->pStamp)
 327                 update_framebuffer(dri_ctx, dri_draw,
 328                                    &dri_ctx->dri2.draw_stamp);
 329
 330         if (ctx->ReadBuffer->Name == 0 && dri_draw != dri_read &&
 331             dri_ctx->dri2.read_stamp != *dri_read->pStamp)
 332                 update_framebuffer(dri_ctx, dri_read,
 333                                    &dri_ctx->dri2.read_stamp);
 334
 335         if (nouveau_next_dirty_state(ctx) >= 0)
 336                 FIRE_RING(context_chan(ctx));
 337 }