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_NV_texture_env_combine4", NULL },
  64         { "GL_SGIS_generate_mipmap",    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         GLcontext *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 __GLcontextModes *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         GLcontext *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(GLcontext *ctx, struct nouveau_screen *screen,
 101                      const GLvisual *visual, GLcontext *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                                     &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(GLcontext *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         GLcontext *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         GLcontext *ctx = dri_ctx->driverPrivate;
 183         __DRIscreen *screen = dri_ctx->driScreenPriv;
 184         struct gl_framebuffer *fb = draw->driverPrivate;
 185         unsigned int attachments[10];
 186         __DRIbuffer *buffers = NULL;
 187         int i = 0, count, ret;
 188
 189         if (draw->lastStamp == *draw->pStamp)
 190                 return;
 191         draw->lastStamp = *draw->pStamp;
 192
 193         attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 194         if (fb->Visual.doubleBufferMode)
 195                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 196         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 197                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 198         else if (fb->Visual.haveDepthBuffer)
 199                 attachments[i++] = __DRI_BUFFER_DEPTH;
 200         else if (fb->Visual.haveStencilBuffer)
 201                 attachments[i++] = __DRI_BUFFER_STENCIL;
 202
 203         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 204                                                      attachments, i, &count,
 205                                                      draw->loaderPrivate);
 206         if (buffers == NULL)
 207                 return;
 208
 209         for (i = 0; i < count; i++) {
 210                 struct gl_renderbuffer *rb;
 211                 struct nouveau_surface *s;
 212                 uint32_t old_handle;
 213                 int index;
 214
 215                 switch (buffers[i].attachment) {
 216                 case __DRI_BUFFER_FRONT_LEFT:
 217                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 218                         index = BUFFER_FRONT_LEFT;
 219                         break;
 220                 case __DRI_BUFFER_BACK_LEFT:
 221                         index = BUFFER_BACK_LEFT;
 222                         break;
 223                 case __DRI_BUFFER_DEPTH:
 224                 case __DRI_BUFFER_DEPTH_STENCIL:
 225                         index = BUFFER_DEPTH;
 226                         break;
 227                 case __DRI_BUFFER_STENCIL:
 228                         index = BUFFER_STENCIL;
 229                         break;
 230                 default:
 231                         assert(0);
 232                 }
 233
 234                 rb = fb->Attachment[index].Renderbuffer;
 235                 s = &to_nouveau_renderbuffer(rb)->surface;
 236
 237                 s->width = draw->w;
 238                 s->height = draw->h;
 239                 s->pitch = buffers[i].pitch;
 240                 s->cpp = buffers[i].cpp;
 241
 242                 /* Don't bother to reopen the bo if it happens to be
 243                  * the same. */
 244                 if (s->bo) {
 245                         ret = nouveau_bo_handle_get(s->bo, &old_handle);
 246                         assert(!ret);
 247                 }
 248
 249                 if (!s->bo || old_handle != buffers[i].name) {
 250                         nouveau_bo_ref(NULL, &s->bo);
 251                         ret = nouveau_bo_handle_ref(context_dev(ctx),
 252                                                     buffers[i].name, &s->bo);
 253                         assert(!ret);
 254                 }
 255         }
 256
 257         _mesa_resize_framebuffer(NULL, fb, draw->w, draw->h);
 258 }
 259
 260 static void
 261 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 262                    int *stamp)
 263 {
 264         GLcontext *ctx = dri_ctx->driverPrivate;
 265         struct gl_framebuffer *fb = draw->driverPrivate;
 266
 267         *stamp = *draw->pStamp;
 268
 269         nouveau_update_renderbuffers(dri_ctx, draw);
 270         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 271
 272         context_dirty(ctx, FRAMEBUFFER);
 273 }
 274
 275 GLboolean
 276 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 277                              __DRIdrawable *dri_read)
 278 {
 279         if (dri_ctx) {
 280                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 281                 GLcontext *ctx = &nctx->base;
 282
 283                 /* Ask the X server for new renderbuffers. */
 284                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 285                         update_framebuffer(dri_ctx, dri_draw,
 286                                            &dri_ctx->dri2.draw_stamp);
 287
 288                 if (dri_draw != dri_read &&
 289                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 290                         update_framebuffer(dri_ctx, dri_read,
 291                                            &dri_ctx->dri2.read_stamp);
 292
 293                 /* Pass it down to mesa. */
 294                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 295                                    dri_read->driverPrivate);
 296                 _mesa_update_state(ctx);
 297
 298                 FIRE_RING(context_chan(ctx));
 299
 300         } else {
 301                 _mesa_make_current(NULL, NULL, NULL);
 302         }
 303
 304         return GL_TRUE;
 305 }
 306
 307 GLboolean
 308 nouveau_context_unbind(__DRIcontext *dri_ctx)
 309 {
 310         /* Unset current context and dispath table */
 311         _mesa_make_current(NULL, NULL, NULL);
 312
 313         return GL_TRUE;
 314 }
 315
 316 void
 317 nouveau_fallback(GLcontext *ctx, enum nouveau_fallback mode)
 318 {
 319         struct nouveau_context *nctx = to_nouveau_context(ctx);
 320
 321         nctx->fallback = MAX2(HWTNL, mode);
 322
 323         if (mode < SWRAST)
 324                 nouveau_state_emit(ctx);
 325         else
 326                 FIRE_RING(context_chan(ctx));
 327 }
 328
 329 void
 330 nouveau_validate_framebuffer(GLcontext *ctx)
 331 {
 332         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 333         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 334         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 335
 336         if (ctx->DrawBuffer->Name == 0 &&
 337             dri_ctx->dri2.draw_stamp != *dri_draw->pStamp)
 338                 update_framebuffer(dri_ctx, dri_draw,
 339                                    &dri_ctx->dri2.draw_stamp);
 340
 341         if (ctx->ReadBuffer->Name == 0 && dri_draw != dri_read &&
 342             dri_ctx->dri2.read_stamp != *dri_read->pStamp)
 343                 update_framebuffer(dri_ctx, dri_read,
 344                                    &dri_ctx->dri2.read_stamp);
 345
 346         if (nouveau_next_dirty_state(ctx) >= 0) {
 347                 nouveau_state_emit(ctx);
 348                 FIRE_RING(context_chan(ctx));
 349         }
 350 }