struct intel_renderbuffer
{
struct swrast_renderbuffer Base;
- struct intel_mipmap_tree *mt; /**< The renderbuffer storage. */
+ /**
+ * The real renderbuffer storage.
+ *
+ * This is multisampled if NumSamples is > 1.
+ */
+ struct intel_mipmap_tree *mt;
+
+ /**
+ * Downsampled contents for window-system MSAA renderbuffers.
+ *
+ * For window system MSAA color buffers, the singlesample_mt is shared with
+ * other processes in DRI2 (and in DRI3, it's the image buffer managed by
+ * glx_dri3.c), while mt is private to our process. To do a swapbuffers,
+ * we have to downsample out of mt into singlesample_mt. For depth and
+ * stencil buffers, the singlesample_mt is also private, and since we don't
+ * expect to need to do resolves (except if someone does a glReadPixels()
+ * or glCopyTexImage()), we just temporarily allocate singlesample_mt when
+ * asked to map the renderbuffer.
+ */
+ struct intel_mipmap_tree *singlesample_mt;
/**
* \name Miptree view
*/
unsigned int mt_level;
unsigned int mt_layer;
+
+ /* The number of attached logical layers. */
+ unsigned int layer_count;
/** \} */
GLuint draw_x, draw_y; /**< Offset of drawing within the region */
+
+ /**
+ * Set to true at every draw call, to indicate if a window-system
+ * renderbuffer needs to be downsampled before using singlesample_mt.
+ */
+ bool need_downsample;
+
+ /**
+ * Set to true when doing an intel_renderbuffer_map()/unmap() that requires
+ * an upsample at the end.
+ */
+ bool need_map_upsample;
+
+ /**
+ * Set to true if singlesample_mt is temporary storage that persists only
+ * for the duration of a mapping.
+ */
+ bool singlesample_mt_is_tmp;
};
tile_x, tile_y);
}
-void
-intel_renderbuffer_set_needs_downsample(struct intel_renderbuffer *irb);
-
bool
intel_renderbuffer_has_hiz(struct intel_renderbuffer *irb);
struct intel_renderbuffer *irb,
bool invalidate);
+void
+intel_renderbuffer_downsample(struct brw_context *brw,
+ struct intel_renderbuffer *irb);
+
+void
+intel_renderbuffer_upsample(struct brw_context *brw,
+ struct intel_renderbuffer *irb);
+
+void brw_render_cache_set_clear(struct brw_context *brw);
+void brw_render_cache_set_add_bo(struct brw_context *brw, drm_intel_bo *bo);
+void brw_render_cache_set_check_flush(struct brw_context *brw, drm_intel_bo *bo);
+
unsigned
intel_quantize_num_samples(struct intel_screen *intel, unsigned num_samples);