src/mesa/drivers/dri/nouveau/nouveau_context.c

   1 /*
   2  * Copyright (C) 2009 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 "vbo/vbo.h"
  40 #include "tnl/tnl.h"
  41
  42 #define need_GL_EXT_framebuffer_object
  43 #define need_GL_EXT_fog_coord
  44
  45 #include "main/remap_helper.h"
  46
  47 static const struct dri_extension nouveau_extensions[] = {
  48         { "GL_EXT_framebuffer_object",  GL_EXT_framebuffer_object_functions },
  49         { "GL_ARB_multitexture",        NULL },
  50         { "GL_EXT_texture_lod_bias",    NULL },
  51         { "GL_SGIS_generate_mipmap",    NULL },
  52         { "GL_ARB_texture_env_combine", NULL },
  53         { "GL_ARB_texture_env_dot3",    NULL },
  54         { "GL_ARB_texture_env_add",     NULL },
  55         { "GL_EXT_fog_coord",           GL_EXT_fog_coord_functions },
  56         { NULL,                         NULL }
  57 };
  58
  59 GLboolean
  60 nouveau_context_create(const __GLcontextModes *visual, __DRIcontext *dri_ctx,
  61                        void *share_ctx)
  62 {
  63         __DRIscreen *dri_screen = dri_ctx->driScreenPriv;
  64         struct nouveau_screen *screen = dri_screen->private;
  65         struct nouveau_context *nctx;
  66         GLcontext *ctx;
  67
  68         ctx = screen->driver->context_create(screen, visual, share_ctx);
  69         if (!ctx)
  70                 return GL_FALSE;
  71
  72         nctx = to_nouveau_context(ctx);
  73         nctx->dri_context = dri_ctx;
  74         dri_ctx->driverPrivate = ctx;
  75
  76         return GL_TRUE;
  77 }
  78
  79 GLboolean
  80 nouveau_context_init(GLcontext *ctx, struct nouveau_screen *screen,
  81                      const GLvisual *visual, GLcontext *share_ctx)
  82 {
  83         struct nouveau_context *nctx = to_nouveau_context(ctx);
  84         struct dd_function_table functions;
  85
  86         nctx->screen = screen;
  87         nctx->fallback = HWTNL;
  88
  89         /* Initialize the function pointers */
  90         _mesa_init_driver_functions(&functions);
  91         nouveau_driver_functions_init(&functions);
  92         nouveau_bufferobj_functions_init(&functions);
  93         nouveau_texture_functions_init(&functions);
  94         nouveau_fbo_functions_init(&functions);
  95
  96         /* Initialize the mesa context */
  97         _mesa_initialize_context(ctx, visual, share_ctx, &functions, NULL);
  98
  99         nouveau_state_init(ctx);
 100         nouveau_bo_state_init(ctx);
 101         _mesa_meta_init(ctx);
 102         _swrast_CreateContext(ctx);
 103         _vbo_CreateContext(ctx);
 104         _tnl_CreateContext(ctx);
 105         nouveau_span_functions_init(ctx);
 106         _mesa_allow_light_in_model(ctx, GL_FALSE);
 107
 108         /* Enable any supported extensions */
 109         driInitExtensions(ctx, nouveau_extensions, GL_TRUE);
 110
 111         return GL_TRUE;
 112 }
 113
 114 void
 115 nouveau_context_destroy(__DRIcontext *dri_ctx)
 116 {
 117         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 118         GLcontext *ctx = &nctx->base;
 119
 120         if (nctx->screen->context == nctx)
 121                 nctx->screen->context = NULL;
 122
 123         _tnl_DestroyContext(ctx);
 124         _vbo_DestroyContext(ctx);
 125         _swrast_DestroyContext(ctx);
 126         _mesa_meta_free(ctx);
 127         nouveau_bo_state_destroy(ctx);
 128         context_drv(ctx)->context_destroy(ctx);
 129 }
 130
 131 static void
 132 nouveau_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable,
 133                              unsigned int *stamp)
 134 {
 135         struct nouveau_context *nctx = context->driverPrivate;
 136         GLcontext *ctx = &nctx->base;
 137         __DRIscreen *screen = context->driScreenPriv;
 138         struct gl_framebuffer *fb = drawable->driverPrivate;
 139         unsigned int attachments[10];
 140         __DRIbuffer *buffers = NULL;
 141         int i = 0, count, ret;
 142
 143         attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 144         if (fb->Visual.doubleBufferMode)
 145                 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 146         if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
 147                 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 148         else if (fb->Visual.haveDepthBuffer)
 149                 attachments[i++] = __DRI_BUFFER_DEPTH;
 150         else if (fb->Visual.haveStencilBuffer)
 151                 attachments[i++] = __DRI_BUFFER_STENCIL;
 152
 153         buffers = (*screen->dri2.loader->getBuffers)(drawable,
 154                                                      &drawable->w, &drawable->h,
 155                                                      attachments, i, &count,
 156                                                      drawable->loaderPrivate);
 157         if (buffers == NULL)
 158                 return;
 159
 160         for (i = 0; i < count; i++) {
 161                 struct gl_renderbuffer *rb;
 162                 struct nouveau_surface *s;
 163                 uint32_t old_handle;
 164                 int index;
 165
 166                 switch (buffers[i].attachment) {
 167                 case __DRI_BUFFER_FRONT_LEFT:
 168                 case __DRI_BUFFER_FAKE_FRONT_LEFT:
 169                         index = BUFFER_FRONT_LEFT;
 170                         break;
 171                 case __DRI_BUFFER_BACK_LEFT:
 172                         index = BUFFER_BACK_LEFT;
 173                         break;
 174                 case __DRI_BUFFER_DEPTH:
 175                 case __DRI_BUFFER_DEPTH_STENCIL:
 176                         index = BUFFER_DEPTH;
 177                         break;
 178                 case __DRI_BUFFER_STENCIL:
 179                         index = BUFFER_STENCIL;
 180                         break;
 181                 default:
 182                         assert(0);
 183                 }
 184
 185                 rb = fb->Attachment[index].Renderbuffer;
 186                 s = &to_nouveau_renderbuffer(rb)->surface;
 187
 188                 s->width = drawable->w;
 189                 s->height = drawable->h;
 190                 s->pitch = buffers[i].pitch;
 191                 s->cpp = buffers[i].cpp;
 192
 193                 /* Don't bother to reopen the bo if it happens to be
 194                  * the same. */
 195                 if (s->bo) {
 196                         ret = nouveau_bo_handle_get(s->bo, &old_handle);
 197                         assert(!ret);
 198                 }
 199
 200                 if (!s->bo || old_handle != buffers[i].name) {
 201                         nouveau_bo_ref(NULL, &s->bo);
 202                         ret = nouveau_bo_handle_ref(context_dev(ctx),
 203                                                     buffers[i].name, &s->bo);
 204                         assert(!ret);
 205
 206                         context_dirty(ctx, FRAMEBUFFER);
 207                 }
 208         }
 209
 210         _mesa_resize_framebuffer(ctx, fb, drawable->w, drawable->h);
 211 }
 212
 213 GLboolean
 214 nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
 215                              __DRIdrawable *dri_read)
 216 {
 217         if (dri_ctx) {
 218                 struct nouveau_context *nctx = dri_ctx->driverPrivate;
 219                 GLcontext *ctx = &nctx->base;
 220
 221                 if (nctx->screen->context != nctx) {
 222                         nctx->screen->context = nctx;
 223                         BITSET_ONES(nctx->dirty);
 224                 }
 225
 226                 /* Ask the X server for new renderbuffers. */
 227                 nouveau_update_renderbuffers(dri_ctx, dri_draw,
 228                                              &nctx->drawable.d_stamp);
 229                 if (dri_draw != dri_read)
 230                         nouveau_update_renderbuffers(dri_ctx, dri_read,
 231                                                      &nctx->drawable.r_stamp);
 232
 233                 /* Pass it down to mesa. */
 234                 _mesa_make_current(ctx, dri_draw->driverPrivate,
 235                                    dri_read->driverPrivate);
 236                 _mesa_update_state(ctx);
 237
 238                 FIRE_RING(context_chan(ctx));
 239
 240         } else {
 241                 _mesa_make_current(NULL, NULL, NULL);
 242         }
 243
 244         return GL_TRUE;
 245 }
 246
 247 GLboolean
 248 nouveau_context_unbind(__DRIcontext *dri_ctx)
 249 {
 250         return GL_TRUE;
 251 }
 252
 253 void
 254 nouveau_fallback(GLcontext *ctx, enum nouveau_fallback mode)
 255 {
 256         struct nouveau_context *nctx = to_nouveau_context(ctx);
 257
 258         nctx->fallback = MAX2(HWTNL, mode);
 259
 260         if (mode < SWRAST)
 261                 nouveau_state_emit(ctx);
 262         else
 263                 FIRE_RING(context_chan(ctx));
 264 }
 265
 266 void
 267 nouveau_validate_framebuffer(GLcontext *ctx)
 268 {
 269         struct nouveau_context *nctx = to_nouveau_context(ctx);
 270
 271         /* Someone's planning to draw something really soon. */
 272         nctx->drawable.dirty = GL_TRUE;
 273 }