radeon_context.c

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

   ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;

   i = driQueryOptioni( &rmesa->optionCache, "allow_large_textures");

   driCalculateMaxTextureLevels( rmesa->texture_heaps,
				 rmesa->nr_heaps,
				 & ctx->Const,
				 4,
				 11, /* max 2D texture size is 2048x2048 */
				 8,  /* 256^3 */
				 9,  /* \todo: max cube texture size seems to be 512x512(x6) */
				 11, /* max rect texture size is 2048x2048. */
				 12,
				 GL_FALSE,
				 i );


   ctx->Const.MaxTextureMaxAnisotropy = 16.0;

   /* No wide points.
    */
   ctx->Const.MinPointSize = 1.0;
   ctx->Const.MinPointSizeAA = 1.0;
   ctx->Const.MaxPointSize = 1.0;
   ctx->Const.MaxPointSizeAA = 1.0;

   ctx->Const.MinLineWidth = 1.0;
   ctx->Const.MinLineWidthAA = 1.0;
   ctx->Const.MaxLineWidth = 10.0;
   ctx->Const.MaxLineWidthAA = 10.0;
   ctx->Const.LineWidthGranularity = 0.0625;

   /* Set maxlocksize (and hence vb size) small enough to avoid
    * fallbacks in radeon_tcl.c.  ie. guarentee that all vertices can
    * fit in a single dma buffer for indexed rendering of quad strips,
    * etc.
    */
   ctx->Const.MaxArrayLockSize = 
      MIN2( ctx->Const.MaxArrayLockSize, 
 	    RADEON_BUFFER_SIZE / RADEON_MAX_TCL_VERTSIZE ); 

   rmesa->boxes = 0;

   /* Initialize the software rasterizer and helper modules.
    */
   _swrast_CreateContext( ctx );
   _vbo_CreateContext( ctx );
   _tnl_CreateContext( ctx );
   _swsetup_CreateContext( ctx );
   _ae_create_context( ctx );

   /* Install the customized pipeline:
    */
   _tnl_destroy_pipeline( ctx );
   _tnl_install_pipeline( ctx, radeon_pipeline );

   /* Try and keep materials and vertices separate:
    */
/*    _tnl_isolate_materials( ctx, GL_TRUE ); */

   /* Configure swrast and T&L to match hardware characteristics:
    */
   _swrast_allow_pixel_fog( ctx, GL_FALSE );
   _swrast_allow_vertex_fog( ctx, GL_TRUE );
   _tnl_allow_pixel_fog( ctx, GL_FALSE );
   _tnl_allow_vertex_fog( ctx, GL_TRUE );


   for ( i = 0 ; i < RADEON_MAX_TEXTURE_UNITS ; i++ ) {
      _math_matrix_ctr( &rmesa->TexGenMatrix[i] );
      _math_matrix_ctr( &rmesa->tmpmat[i] );
      _math_matrix_set_identity( &rmesa->TexGenMatrix[i] );
      _math_matrix_set_identity( &rmesa->tmpmat[i] );
   }

   driInitExtensions( ctx, card_extensions, GL_TRUE );
   if (rmesa->radeonScreen->drmSupportsCubeMapsR100)
      _mesa_enable_extension( ctx, "GL_ARB_texture_cube_map" );
   if (rmesa->glCtx->Mesa_DXTn) {
      _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
      _mesa_enable_extension( ctx, "GL_S3_s3tc" );
   }
   else if (driQueryOptionb (&rmesa->optionCache, "force_s3tc_enable")) {
      _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
   }

   if (rmesa->dri.drmMinor >= 9)
      _mesa_enable_extension( ctx, "GL_NV_texture_rectangle");

   /* XXX these should really go right after _mesa_init_driver_functions() */
   radeonInitIoctlFuncs( ctx );
   radeonInitStateFuncs( ctx );
   radeonInitSpanFuncs( ctx );
   radeonInitState( rmesa );
   radeonInitSwtcl( ctx );

   _mesa_vector4f_alloc( &rmesa->tcl.ObjClean, 0, 
			 ctx->Const.MaxArrayLockSize, 32 );

   fthrottle_mode = driQueryOptioni(&rmesa->optionCache, "fthrottle_mode");
   rmesa->iw.irq_seq = -1;
   rmesa->irqsEmitted = 0;
   rmesa->do_irqs = (rmesa->radeonScreen->irq != 0 &&
		     fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);

   rmesa->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);

   (*sPriv->systemTime->getUST)( & rmesa->swap_ust );


#if DO_DEBUG
   RADEON_DEBUG = driParseDebugString( getenv( "RADEON_DEBUG" ),
				       debug_control );
#endif

   tcl_mode = driQueryOptioni(&rmesa->optionCache, "tcl_mode");
   if (driQueryOptionb(&rmesa->optionCache, "no_rast")) {
      fprintf(stderr, "disabling 3D acceleration\n");
      FALLBACK(rmesa, RADEON_FALLBACK_DISABLE, 1);
   } else if (tcl_mode == DRI_CONF_TCL_SW ||
	      !(rmesa->radeonScreen->chip_flags & RADEON_CHIPSET_TCL)) {
      if (rmesa->radeonScreen->chip_flags & RADEON_CHIPSET_TCL) {
	 rmesa->radeonScreen->chip_flags &= ~RADEON_CHIPSET_TCL;
	 fprintf(stderr, "Disabling HW TCL support\n");
      }
      TCL_FALLBACK(rmesa->glCtx, RADEON_TCL_FALLBACK_TCL_DISABLE, 1);
   }

   if (rmesa->radeonScreen->chip_flags & RADEON_CHIPSET_TCL) {
/*       _tnl_need_dlist_norm_lengths( ctx, GL_FALSE ); */
   }
   return GL_TRUE;
}


/* Destroy the device specific context.
 */
/* Destroy the Mesa and driver specific context data.
 */
void radeonDestroyContext( __DRIcontextPrivate *driContextPriv )
{
   GET_CURRENT_CONTEXT(ctx);
   radeonContextPtr rmesa = (radeonContextPtr) driContextPriv->driverPrivate;
   radeonContextPtr current = ctx ? RADEON_CONTEXT(ctx) : NULL;

   /* check if we're deleting the currently bound context */
   if (rmesa == current) {
      RADEON_FIREVERTICES( rmesa );
      _mesa_make_current(NULL, NULL, NULL);
   }

   /* Free radeon context resources */
   assert(rmesa); /* should never be null */
   if ( rmesa ) {
      GLboolean   release_texture_heaps;


      release_texture_heaps = (rmesa->glCtx->Shared->RefCount == 1);
      _swsetup_DestroyContext( rmesa->glCtx );
      _tnl_DestroyContext( rmesa->glCtx );
      _vbo_DestroyContext( rmesa->glCtx );
      _swrast_DestroyContext( rmesa->glCtx );

      radeonDestroySwtcl( rmesa->glCtx );
      radeonReleaseArrays( rmesa->glCtx, ~0 );
      if (rmesa->dma.current.buf) {
	 radeonReleaseDmaRegion( rmesa, &rmesa->dma.current, __FUNCTION__ );
	 radeonFlushCmdBuf( rmesa, __FUNCTION__ );
      }

      _mesa_vector4f_free( &rmesa->tcl.ObjClean );

      if (rmesa->state.scissor.pClipRects) {
	 FREE(rmesa->state.scissor.pClipRects);
	 rmesa->state.scissor.pClipRects = NULL;
      }

      if ( release_texture_heaps ) {
         /* This share group is about to go away, free our private
          * texture object data.
          */
         int i;

         for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
	    driDestroyTextureHeap( rmesa->texture_heaps[ i ] );
	    rmesa->texture_heaps[ i ] = NULL;
         }

	 assert( is_empty_list( & rmesa->swapped ) );
      }

      /* free the Mesa context */
      rmesa->glCtx->DriverCtx = NULL;
      _mesa_destroy_context( rmesa->glCtx );

      /* free the option cache */
      driDestroyOptionCache (&rmesa->optionCache);

      FREE( rmesa );
   }
}




void
radeonSwapBuffers( __DRIdrawablePrivate *dPriv )
{

   if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
      radeonContextPtr rmesa;
      GLcontext *ctx;
      rmesa = (radeonContextPtr) dPriv->driContextPriv->driverPrivate;
      ctx = rmesa->glCtx;
      if (ctx->Visual.doubleBufferMode) {
         _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */

         if ( rmesa->doPageFlip ) {
            radeonPageFlip( dPriv );
         }
         else {
	     radeonCopyBuffer( dPriv, NULL );
         }
      }
   }
   else {
      /* XXX this shouldn't be an error but we can't handle it for now */
      _mesa_problem(NULL, "%s: drawable has no context!", __FUNCTION__);
   }
}

void radeonCopySubBuffer(__DRIdrawablePrivate * dPriv,
			 int x, int y, int w, int h )
{
    if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
	radeonContextPtr radeon;
	GLcontext *ctx;

	radeon = (radeonContextPtr) dPriv->driContextPriv->driverPrivate;
	ctx = radeon->glCtx;

	if (ctx->Visual.doubleBufferMode) {
	    drm_clip_rect_t rect;
	    rect.x1 = x + dPriv->x;
	    rect.y1 = (dPriv->h - y - h) + dPriv->y;
	    rect.x2 = rect.x1 + w;
	    rect.y2 = rect.y1 + h;
	    _mesa_notifySwapBuffers(ctx);	/* flush pending rendering comands */
	    radeonCopyBuffer(dPriv, &rect);
	}
    } else {
	/* XXX this shouldn't be an error but we can't handle it for now */
	_mesa_problem(NULL, "%s: drawable has no context!",
		      __FUNCTION__);
    }
}

/* Make context `c' the current context and bind it to the given
 * drawing and reading surfaces.
 */
GLboolean
radeonMakeCurrent( __DRIcontextPrivate *driContextPriv,
                   __DRIdrawablePrivate *driDrawPriv,
                   __DRIdrawablePrivate *driReadPriv )
{
   if ( driContextPriv ) {
      radeonContextPtr newCtx = 
	 (radeonContextPtr) driContextPriv->driverPrivate;

      if (RADEON_DEBUG & DEBUG_DRI)
	 fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *) newCtx->glCtx);

      newCtx->dri.readable = driReadPriv;

      if ( (newCtx->dri.drawable != driDrawPriv) ||
           newCtx->lastStamp != driDrawPriv->lastStamp ) {
	 if (driDrawPriv->swap_interval == (unsigned)-1) {
	    driDrawPriv->vblFlags = (newCtx->radeonScreen->irq != 0)
	       ? driGetDefaultVBlankFlags(&newCtx->optionCache)
	       : VBLANK_FLAG_NO_IRQ;

	    driDrawableInitVBlank( driDrawPriv );
	 }

	 newCtx->dri.drawable = driDrawPriv;

	 radeonSetCliprects(newCtx);
	 radeonUpdateViewportOffset( newCtx->glCtx );
      }

      _mesa_make_current( newCtx->glCtx,
			  (GLframebuffer *) driDrawPriv->driverPrivate,
			  (GLframebuffer *) driReadPriv->driverPrivate );

      _mesa_update_state( newCtx->glCtx );
   } else {
      if (RADEON_DEBUG & DEBUG_DRI)
	 fprintf(stderr, "%s ctx is null\n", __FUNCTION__);
      _mesa_make_current( NULL, NULL, NULL );
   }

   if (RADEON_DEBUG & DEBUG_DRI)
      fprintf(stderr, "End %s\n", __FUNCTION__);
   return GL_TRUE;
}

/* Force the context `c' to be unbound from its buffer.
 */
GLboolean
radeonUnbindContext( __DRIcontextPrivate *driContextPriv )
{
   radeonContextPtr rmesa = (radeonContextPtr) driContextPriv->driverPrivate;

   if (RADEON_DEBUG & DEBUG_DRI)
      fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *) rmesa->glCtx);

   return GL_TRUE;
}