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_env_combine", NULL },
  62         { "GL_EXT_texture_lod_bias",    NULL },
  63         { "GL_NV_blend_square",         NULL },
  64         { "GL_NV_texture_env_combine4", NULL },
  65         { "GL_SGIS_generate_mipmap",    NULL },
  66         { NULL,                         NULL }
  67 };
  68
  69 static void
  70 nouveau_channel_flush_notify(struct nouveau_channel *chan)
  71 {
  72         struct nouveau_context *nctx = chan->user_private;
  73         GLcontext *ctx = &nctx->base;
  74
  75         if (nctx->fallback < SWRAST)
  76                 nouveau_bo_state_emit(ctx);
  77 }
  78
  79 GLboolean
  80 nouveau_context_create(gl_api api,
  81                        const __GLcontextModes *visual, __DRIcontext *dri_ctx,
  82                        void *share_ctx)
  83 {
  84         __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
  85         struct nouveau_screen *screen = dri_screen->private;
  86         struct nouveau_context *nctx;
  87         GLcontext *ctx;
  88
  89         ctx = screen->driver->context_create(screen, visual, share_ctx);
  90         if (!ctx)
  91                 return GL_FALSE;
  92
  93         nctx = to_nouveau_context(ctx);
  94         nctx->dri_context = dri_ctx;
  95         dri_ctx->driverPrivate = ctx;
  96
  97         return GL_TRUE;
  98 }
  99
 100 GLboolean
 101 nouveau_context_init(GLcontext *ctx, struct nouveau_screen *screen,
 102                      const GLvisual *visual, GLcontext *share_ctx)
 103 {
 104         struct nouveau_context *nctx = to_nouveau_context(ctx);
 105         struct dd_function_table functions;
 106         int ret;
 107
 108         nctx->screen = screen;
 109         nctx->fallback = HWTNL;
 110
 111         /* Initialize the function pointers. */
 112         _mesa_init_driver_functions(&functions);
 113         nouveau_driver_functions_init(&functions);
 114         nouveau_bufferobj_functions_init(&functions);
 115         nouveau_texture_functions_init(&functions);
 116         nouveau_fbo_functions_init(&functions);
 117
 118         /* Initialize the mesa context. */
 119         _mesa_initialize_context(ctx, visual, share_ctx, &functions, NULL);
 120
 121         nouveau_state_init(ctx);
 122         nouveau_bo_state_init(ctx);
 123         _mesa_meta_init(ctx);
 124         _swrast_CreateContext(ctx);
 125         _vbo_CreateContext(ctx);
 126         _tnl_CreateContext(ctx);
 127         nouveau_span_functions_init(ctx);
 128         _mesa_allow_light_in_model(ctx, GL_FALSE);
 129
 130         /* Allocate a hardware channel. */
 131         ret = nouveau_channel_alloc(context_dev(ctx), 0xbeef0201, 0xbeef0202,
 132                                     &nctx->hw.chan);
 133         if (ret) {
 134                 nouveau_error("Error initializing the FIFO.\n");
 135                 return GL_FALSE;
 136         }
 137
 138         nctx->hw.chan->flush_notify = nouveau_channel_flush_notify;
 139         nctx->hw.chan->user_private = nctx;
 140
 141         /* Enable any supported extensions. */
 142         driInitExtensions(ctx, nouveau_extensions, GL_TRUE);
 143
 144         return GL_TRUE;
 145 }
 146
 147 void
 148 nouveau_context_deinit(GLcontext *ctx)
 149 {
 150         struct nouveau_context *nctx = to_nouveau_context(ctx);
 151
 152         if (TNL_CONTEXT(ctx))
 153                 _tnl_DestroyContext(ctx);
 154
 155         if (vbo_context(ctx))
 156                 _vbo_DestroyContext(ctx);
 157
 158         if (SWRAST_CONTEXT(ctx))
 159                 _swrast_DestroyContext(ctx);
 160
 161         if (ctx->Meta)
 162                 _mesa_meta_free(ctx);
 163
 164         if (nctx->hw.chan)
 165                 nouveau_channel_free(&nctx->hw.chan);
 166
 167         nouveau_bo_state_destroy(ctx);
 168         _mesa_free_context_data(ctx);
 169 }
 170
 171 void
 172 nouveau_context_destroy(__DRIcontext *dri_ctx)
 173 {
 174         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 175         GLcontext *ctx = &nctx->base;
 176
 177         context_drv(ctx)->context_destroy(ctx);
 178 }
 179
 180 void
 181 nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
 182 {
 183         GLcontext *ctx = dri_ctx->driverPrivate;
 184         __DRIscreen *screen = dri_ctx->driScreenPriv;
 185         struct gl_framebuffer *fb = draw->driverPrivate;
 186         unsigned int attachments[10];
 187         __DRIbuffer *buffers = NULL;
 188         int i = 0, count, ret;
 189
 190         if (draw->lastStamp == *draw->pStamp)
 191                 return;
 192         draw->lastStamp = *draw->pStamp;
 193
 194         attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 195         if (fb->Visual.doubleBufferMode)
 196                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 197         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 198                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 199         else if (fb->Visual.haveDepthBuffer)
 200                 attachments[i++] = __DRI_BUFFER_DEPTH;
 201         else if (fb->Visual.haveStencilBuffer)
 202                 attachments[i++] = __DRI_BUFFER_STENCIL;
 203
 204         buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
 205                                                      attachments, i, &count,
 206                                                      draw->loaderPrivate);
 207         if (buffers == NULL)
 208                 return;
 209
 210         for (i = 0; i < count; i++) {
 211                 struct gl_renderbuffer *rb;
 212                 struct nouveau_surface *s;
 213                 uint32_t old_handle;
 214                 int index;
 215
 216                 switch (buffers[i].attachment) {
 217                 case __DRI_BUFFER_FRONT_LEFT:
 218                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 219                         index = BUFFER_FRONT_LEFT;
 220                         break;
 221                 case __DRI_BUFFER_BACK_LEFT:
 222                         index = BUFFER_BACK_LEFT;
 223                         break;
 224                 case __DRI_BUFFER_DEPTH:
 225                 case __DRI_BUFFER_DEPTH_STENCIL:
 226                         index = BUFFER_DEPTH;
 227                         break;
 228                 case __DRI_BUFFER_STENCIL:
 229                         index = BUFFER_STENCIL;
 230                         break;
 231                 default:
 232                         assert(0);
 233                 }
 234
 235                 rb = fb->Attachment[index].Renderbuffer;
 236                 s = &to_nouveau_renderbuffer(rb)->surface;
 237
 238                 s->width = draw->w;
 239                 s->height = draw->h;
 240                 s->pitch = buffers[i].pitch;
 241                 s->cpp = buffers[i].cpp;
 242
 243                 /* Don't bother to reopen the bo if it happens to be
 244                  * the same. */
 245                 if (s->bo) {
 246                         ret = nouveau_bo_handle_get(s->bo, &old_handle);
 247                         assert(!ret);
 248                 }
 249
 250                 if (!s->bo || old_handle != buffers[i].name) {
 251                         nouveau_bo_ref(NULL, &s->bo);
 252                         ret = nouveau_bo_handle_ref(context_dev(ctx),
 253                                                     buffers[i].name, &s->bo);
 254                         assert(!ret);
 255                 }
 256         }
 257
 258         _mesa_resize_framebuffer(NULL, fb, draw->w, draw->h);
 259 }
 260
 261 static void
 262 update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
 263                    int *stamp)
 264 {
 265         GLcontext *ctx = dri_ctx->driverPrivate;
 266         struct gl_framebuffer *fb = draw->driverPrivate;
 267
 268         *stamp = *draw->pStamp;
 269
 270         nouveau_update_renderbuffers(dri_ctx, draw);
 271         _mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
 272
 273         context_dirty(ctx, FRAMEBUFFER);
 274 }
 275
 276 GLboolean
 277 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 278                              __DRIdrawable *dri_read)
 279 {
 280         if (dri_ctx) {
 281                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 282                 GLcontext *ctx = &nctx->base;
 283
 284                 /* Ask the X server for new renderbuffers. */
 285                 if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
 286                         update_framebuffer(dri_ctx, dri_draw,
 287                                            &dri_ctx->dri2.draw_stamp);
 288
 289                 if (dri_draw != dri_read &&
 290                     dri_read->driverPrivate != ctx->WinSysReadBuffer)
 291                         update_framebuffer(dri_ctx, dri_read,
 292                                            &dri_ctx->dri2.read_stamp);
 293
 294                 /* Pass it down to mesa. */
 295                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 296                                    dri_read->driverPrivate);
 297                 _mesa_update_state(ctx);
 298
 299                 FIRE_RING(context_chan(ctx));
 300
 301         } else {
 302                 _mesa_make_current(NULL, NULL, NULL);
 303         }
 304
 305         return GL_TRUE;
 306 }
 307
 308 GLboolean
 309 nouveau_context_unbind(__DRIcontext *dri_ctx)
 310 {
 311         /* Unset current context and dispath table */
 312         _mesa_make_current(NULL, NULL, NULL);
 313
 314         return GL_TRUE;
 315 }
 316
 317 void
 318 nouveau_fallback(GLcontext *ctx, enum nouveau_fallback mode)
 319 {
 320         struct nouveau_context *nctx = to_nouveau_context(ctx);
 321
 322         nctx->fallback = MAX2(HWTNL, mode);
 323
 324         if (mode < SWRAST)
 325                 nouveau_state_emit(ctx);
 326         else
 327                 FIRE_RING(context_chan(ctx));
 328 }
 329
 330 void
 331 nouveau_validate_framebuffer(GLcontext *ctx)
 332 {
 333         __DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
 334         __DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
 335         __DRIdrawable *dri_read = dri_ctx->driReadablePriv;
 336
 337         if (ctx->DrawBuffer->Name == 0 &&
 338             dri_ctx->dri2.draw_stamp != *dri_draw->pStamp)
 339                 update_framebuffer(dri_ctx, dri_draw,
 340                                    &dri_ctx->dri2.draw_stamp);
 341
 342         if (ctx->ReadBuffer->Name == 0 && dri_draw != dri_read &&
 343             dri_ctx->dri2.read_stamp != *dri_read->pStamp)
 344                 update_framebuffer(dri_ctx, dri_read,
 345                                    &dri_ctx->dri2.read_stamp);
 346
 347         if (nouveau_next_dirty_state(ctx) >= 0) {
 348                 nouveau_state_emit(ctx);
 349                 FIRE_RING(context_chan(ctx));
 350         }
 351 }