Esempio n. 1
0
/**
 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
 *
 * To determine which DRI buffers to request, examine the renderbuffers
 * attached to the drawable's framebuffer. Then request the buffers with
 * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
 *
 * This is called from intel_update_renderbuffers().
 *
 * \param drawable      Drawable whose buffers are queried.
 * \param buffers       [out] List of buffers returned by DRI2 query.
 * \param buffer_count  [out] Number of buffers returned.
 *
 * \see intel_update_renderbuffers()
 * \see DRI2GetBuffers()
 * \see DRI2GetBuffersWithFormat()
 */
static void
intel_query_dri2_buffers(struct brw_context *brw,
			 __DRIdrawable *drawable,
			 __DRIbuffer **buffers,
			 int *buffer_count)
{
   __DRIscreen *screen = brw->intelScreen->driScrnPriv;
   struct gl_framebuffer *fb = drawable->driverPrivate;
   int i = 0;
   unsigned attachments[8];

   struct intel_renderbuffer *front_rb;
   struct intel_renderbuffer *back_rb;

   front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
   back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);

   memset(attachments, 0, sizeof(attachments));
   if ((brw->is_front_buffer_rendering ||
	brw->is_front_buffer_reading ||
	!back_rb) && front_rb) {
      /* If a fake front buffer is in use, then querying for
       * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
       * the real front buffer to the fake front buffer.  So before doing the
       * query, we need to make sure all the pending drawing has landed in the
       * real front buffer.
       */
      intel_flush(&brw->ctx);
      intel_flush_front(&brw->ctx);

      attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
      attachments[i++] = intel_bits_per_pixel(front_rb);
   } else if (front_rb && brw->front_buffer_dirty) {
      /* We have pending front buffer rendering, but we aren't querying for a
       * front buffer.  If the front buffer we have is a fake front buffer,
       * the X server is going to throw it away when it processes the query.
       * So before doing the query, make sure all the pending drawing has
       * landed in the real front buffer.
       */
      intel_flush(&brw->ctx);
      intel_flush_front(&brw->ctx);
   }

   if (back_rb) {
      attachments[i++] = __DRI_BUFFER_BACK_LEFT;
      attachments[i++] = intel_bits_per_pixel(back_rb);
   }

   assert(i <= ARRAY_SIZE(attachments));

   *buffers = screen->dri2.loader->getBuffersWithFormat(drawable,
							&drawable->w,
							&drawable->h,
							attachments, i / 2,
							buffer_count,
							drawable->loaderPrivate);
}
Esempio n. 2
0
/**
 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
 *
 * To determine which DRI buffers to request, examine the renderbuffers
 * attached to the drawable's framebuffer. Then request the buffers with
 * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
 *
 * This is called from intel_update_renderbuffers().
 *
 * \param drawable      Drawable whose buffers are queried.
 * \param buffers       [out] List of buffers returned by DRI2 query.
 * \param buffer_count  [out] Number of buffers returned.
 *
 * \see intel_update_renderbuffers()
 * \see DRI2GetBuffers()
 * \see DRI2GetBuffersWithFormat()
 */
static void
intel_query_dri2_buffers(struct intel_context *intel,
			 __DRIdrawable *drawable,
			 __DRIbuffer **buffers,
			 int *buffer_count)
{
   __DRIscreen *screen = intel->intelScreen->driScrnPriv;
   struct gl_framebuffer *fb = drawable->driverPrivate;
   int i = 0;
   const int max_attachments = 4;
   unsigned *attachments = calloc(2 * max_attachments, sizeof(unsigned));

   struct intel_renderbuffer *front_rb;
   struct intel_renderbuffer *back_rb;

   front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
   back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);

   if ((intel->is_front_buffer_rendering ||
	intel->is_front_buffer_reading ||
	!back_rb) && front_rb) {
      attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
      attachments[i++] = intel_bits_per_pixel(front_rb);
   }

   if (back_rb) {
      attachments[i++] = __DRI_BUFFER_BACK_LEFT;
      attachments[i++] = intel_bits_per_pixel(back_rb);
   }

   assert(i <= 2 * max_attachments);

   *buffers = screen->dri2.loader->getBuffersWithFormat(drawable,
							&drawable->w,
							&drawable->h,
							attachments, i / 2,
							buffer_count,
							drawable->loaderPrivate);
   free(attachments);
}
Esempio n. 3
0
void
intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
{
   struct gl_framebuffer *fb = drawable->driverPrivate;
   struct intel_renderbuffer *rb;
   struct intel_region *region, *depth_region;
   struct intel_context *intel = context->driverPrivate;
   struct intel_renderbuffer *front_rb, *back_rb, *depth_rb, *stencil_rb;
   __DRIbuffer *buffers = NULL;
   __DRIscreen *screen;
   int i, count;
   unsigned int attachments[10];
   const char *region_name;

   /* If we're rendering to the fake front buffer, make sure all the
    * pending drawing has landed on the real front buffer.  Otherwise
    * when we eventually get to DRI2GetBuffersWithFormat the stale
    * real front buffer contents will get copied to the new fake front
    * buffer.
    */
   if (intel->is_front_buffer_rendering)
      intel_flush(&intel->ctx, GL_FALSE);

   /* Set this up front, so that in case our buffers get invalidated
    * while we're getting new buffers, we don't clobber the stamp and
    * thus ignore the invalidate. */
   drawable->lastStamp = drawable->dri2.stamp;

   if (INTEL_DEBUG & DEBUG_DRI)
      fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);

   screen = intel->intelScreen->driScrnPriv;

   if (screen->dri2.loader
       && (screen->dri2.loader->base.version > 2)
       && (screen->dri2.loader->getBuffersWithFormat != NULL)) {

      front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
      back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
      depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
      stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);

      i = 0;
      if ((intel->is_front_buffer_rendering ||
	   intel->is_front_buffer_reading ||
	   !back_rb) && front_rb) {
	 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
	 attachments[i++] = intel_bits_per_pixel(front_rb);
      }

      if (back_rb) {
	 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
	 attachments[i++] = intel_bits_per_pixel(back_rb);
      }

      if ((depth_rb != NULL) && (stencil_rb != NULL)) {
	 attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
	 attachments[i++] = intel_bits_per_pixel(depth_rb);
      } else if (depth_rb != NULL) {
	 attachments[i++] = __DRI_BUFFER_DEPTH;
	 attachments[i++] = intel_bits_per_pixel(depth_rb);
      } else if (stencil_rb != NULL) {
	 attachments[i++] = __DRI_BUFFER_STENCIL;
	 attachments[i++] = intel_bits_per_pixel(stencil_rb);
      }

      buffers =
	 (*screen->dri2.loader->getBuffersWithFormat)(drawable,
						      &drawable->w,
						      &drawable->h,
						      attachments, i / 2,
						      &count,
						      drawable->loaderPrivate);
   } else if (screen->dri2.loader) {
      i = 0;
      if (intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT))
	 attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
      if (intel_get_renderbuffer(fb, BUFFER_BACK_LEFT))
	 attachments[i++] = __DRI_BUFFER_BACK_LEFT;
      if (intel_get_renderbuffer(fb, BUFFER_DEPTH))
	 attachments[i++] = __DRI_BUFFER_DEPTH;
      if (intel_get_renderbuffer(fb, BUFFER_STENCIL))
	 attachments[i++] = __DRI_BUFFER_STENCIL;

      buffers = (*screen->dri2.loader->getBuffers)(drawable,
						   &drawable->w,
						   &drawable->h,
						   attachments, i,
						   &count,
						   drawable->loaderPrivate);
   }

   if (buffers == NULL)
      return;

   drawable->x = 0;
   drawable->y = 0;
   drawable->backX = 0;
   drawable->backY = 0;
   drawable->numClipRects = 1;
   drawable->pClipRects[0].x1 = 0;
   drawable->pClipRects[0].y1 = 0;
   drawable->pClipRects[0].x2 = drawable->w;
   drawable->pClipRects[0].y2 = drawable->h;
   drawable->numBackClipRects = 1;
   drawable->pBackClipRects[0].x1 = 0;
   drawable->pBackClipRects[0].y1 = 0;
   drawable->pBackClipRects[0].x2 = drawable->w;
   drawable->pBackClipRects[0].y2 = drawable->h;

   depth_region = NULL;
   for (i = 0; i < count; i++) {
       switch (buffers[i].attachment) {
       case __DRI_BUFFER_FRONT_LEFT:
	   rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
	   region_name = "dri2 front buffer";
	   break;

       case __DRI_BUFFER_FAKE_FRONT_LEFT:
	   rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
	   region_name = "dri2 fake front buffer";
	   break;

       case __DRI_BUFFER_BACK_LEFT:
	   rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
	   region_name = "dri2 back buffer";
	   break;

       case __DRI_BUFFER_DEPTH:
	   rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
	   region_name = "dri2 depth buffer";
	   break;

       case __DRI_BUFFER_DEPTH_STENCIL:
	   rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
	   region_name = "dri2 depth / stencil buffer";
	   break;

       case __DRI_BUFFER_STENCIL:
	   rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
	   region_name = "dri2 stencil buffer";
	   break;

       case __DRI_BUFFER_ACCUM:
       default:
	   fprintf(stderr,
		   "unhandled buffer attach event, attacment type %d\n",
		   buffers[i].attachment);
	   return;
       }

       if (rb == NULL)
	  continue;

       if (rb->region && rb->region->name == buffers[i].name)
	     continue;

       if (INTEL_DEBUG & DEBUG_DRI)
	  fprintf(stderr,
		  "attaching buffer %d, at %d, cpp %d, pitch %d\n",
		  buffers[i].name, buffers[i].attachment,
		  buffers[i].cpp, buffers[i].pitch);
       
       if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
	  if (INTEL_DEBUG & DEBUG_DRI)
	     fprintf(stderr, "(reusing depth buffer as stencil)\n");
	  intel_region_reference(&region, depth_region);
       }
       else
          region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
						 drawable->w,
						 drawable->h,
						 buffers[i].pitch / buffers[i].cpp,
						 buffers[i].name,
						 region_name);

       if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
	  depth_region = region;

       intel_renderbuffer_set_region(intel, rb, region);
       intel_region_release(&region);

       if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
	  rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
	  if (rb != NULL) {
	     struct intel_region *stencil_region = NULL;

	     if (rb->region && rb->region->name == buffers[i].name)
		   continue;

	     intel_region_reference(&stencil_region, region);
	     intel_renderbuffer_set_region(intel, rb, stencil_region);
	     intel_region_release(&stencil_region);
	  }
       }
   }

   driUpdateFramebufferSize(&intel->ctx, drawable);
}