Add two new functions: intel_miptree_{map,unmap}_multisample, to which
intel_miptree_{map,unmap} dispatch. Only mapping flat, renderbuffer-like
miptrees are supported.
CC: Eric Anholt <e...@anholt.net>
CC: Paul Berry <stereotype...@gmail.com>
Signed-off-by: Chad Versace <chad.vers...@linux.intel.com>
---
src/mesa/drivers/dri/intel/intel_mipmap_tree.c | 108 +++++++++++++++++++++++--
src/mesa/drivers/dri/intel/intel_mipmap_tree.h | 6 ++
2 files changed, 108 insertions(+), 6 deletions(-)
diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
index 95dc8aa..22af2fa 100644
--- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
@@ -1487,6 +1487,92 @@ intel_miptree_unmap_singlesample(struct intel_context
*intel,
intel_miptree_release_map(mt, level, slice);
}
+static void
+intel_miptree_map_multisample(struct intel_context *intel,
+ struct intel_mipmap_tree *mt,
+ unsigned int level,
+ unsigned int slice,
+ unsigned int x,
+ unsigned int y,
+ unsigned int w,
+ unsigned int h,
+ GLbitfield mode,
+ void **out_ptr,
+ int *out_stride)
+{
+ struct intel_miptree_map *map;
+
+ assert(mt->num_samples > 0);
+
+ /* Only flat, renderbuffer-like miptrees are supported. */
+ if (mt->target != GL_TEXTURE_2D ||
+ mt->first_level != 0 ||
+ mt->last_level != 0) {
+ _mesa_problem(&intel->ctx, "attempt to map a multisample miptree for "
+ "which (target, first_level, last_level != "
+ "(GL_TEXTURE_2D, 0, 0)");
+ goto fail;
+ }
+
+ map = intel_miptree_attach_map(mt, level, slice, x, y, w, h, mode);
+ if (!map)
+ goto fail;
+
+ if (!mt->singlesample_mt) {
+ map->singlesample_mt_is_tmp = true;
+ mt->singlesample_mt =
+ intel_miptree_create_for_renderbuffer(intel,
+ mt->format,
+ mt->singlesample_width0,
+ mt->singlesample_height0,
+ 0 /*num_samples*/);
+ if (!mt->singlesample_mt)
+ goto fail;
+ }
+
+ if (!(mode & GL_MAP_INVALIDATE_RANGE_BIT)) {
+ mt->need_downsample = true;
+ intel_miptree_downsample(intel, mt);
+ }
+
+ intel_miptree_map_singlesample(intel, mt->singlesample_mt,
+ level, slice,
+ x, y, w, h,
+ mode,
+ out_ptr, out_stride);
+ return;
+
+fail:
+ intel_miptree_release_map(mt, level, slice);
+ *out_ptr = NULL;
+ *out_stride = 0;
+}
+
+static void
+intel_miptree_unmap_multisample(struct intel_context *intel,
+ struct intel_mipmap_tree *mt,
+ unsigned int level,
+ unsigned int slice)
+{
+ struct intel_miptree_map *map = mt->level[level].slice[slice].map;
+
+ assert(mt->num_samples > 0);
+
+ if (!map)
+ return;
+
+ intel_miptree_unmap_singlesample(intel, mt->singlesample_mt, level, slice);
+
+ mt->need_downsample = false;
+ if (map->mode & GL_MAP_WRITE_BIT)
+ intel_miptree_upsample(intel, mt);
+
+ if (map->singlesample_mt_is_tmp)
+ intel_miptree_release(&mt->singlesample_mt);
+
+ intel_miptree_release_map(mt, level, slice);
+}
+
void
intel_miptree_map(struct intel_context *intel,
struct intel_mipmap_tree *mt,
@@ -1500,11 +1586,18 @@ intel_miptree_map(struct intel_context *intel,
void **out_ptr,
int *out_stride)
{
- intel_miptree_map_singlesample(intel, mt,
- level, slice,
- x, y, w, h,
- mode,
- out_ptr, out_stride);
+ if (mt->num_samples == 0)
+ intel_miptree_map_singlesample(intel, mt,
+ level, slice,
+ x, y, w, h,
+ mode,
+ out_ptr, out_stride);
+ else
+ intel_miptree_map_multisample(intel, mt,
+ level, slice,
+ x, y, w, h,
+ mode,
+ out_ptr, out_stride);
}
void
@@ -1513,5 +1606,8 @@ intel_miptree_unmap(struct intel_context *intel,
unsigned int level,
unsigned int slice)
{
- intel_miptree_unmap_singlesample(intel, mt, level, slice);
+ if (mt->num_samples == 0)
+ intel_miptree_unmap_singlesample(intel, mt, level, slice);
+ else
+ intel_miptree_unmap_multisample(intel, mt, level, slice);
}
diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.h
b/src/mesa/drivers/dri/intel/intel_mipmap_tree.h
index 4ee68be..7a0b5c6 100644
--- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.h
+++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.h
@@ -79,6 +79,12 @@ struct intel_miptree_map {
void *ptr;
/** Stride of the mapping. */
int stride;
+
+ /**
+ * intel_mipmap_tree::singlesample_mt is temporary storage that persists
+ * only for the duration of the map.
+ */
+ bool singlesample_mt_is_tmp;
};
/**
--
1.7.11.4
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