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intel: Define functions for up/downsampling on miptrees

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Flesh out the stub functions intel_miptree_{up,down}sample.

Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Chad Versace <chad.versace@linux.intel.com>
This commit is contained in:
Chad Versace
2012-07-12 10:49:13 -07:00
parent 6cc9df331b
commit d3746354fb
1 changed files with 72 additions and 2 deletions
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src/mesa/drivers/dri/intel/intel_mipmap_tree.c
+72 -2
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@@ -38,6 +38,10 @@
#include "intel_tex.h"
#include "intel_blit.h"
#ifndef I915
#include "brw_blorp.h"
#endif
#include "main/enums.h"
#include "main/formats.h"
#include "main/glformats.h"
@@ -959,6 +963,48 @@ intel_miptree_all_slices_resolve_depth(struct intel_context *intel,
GEN6_HIZ_OP_DEPTH_RESOLVE);
}
static void
intel_miptree_updownsample(struct intel_context *intel,
struct intel_mipmap_tree *src,
struct intel_mipmap_tree *dst,
unsigned width,
unsigned height)
{
#ifndef I915
int src_x0 = 0;
int src_y0 = 0;
int dst_x0 = 0;
int dst_y0 = 0;
intel_miptree_slice_resolve_depth(intel, src, 0, 0);
intel_miptree_slice_resolve_depth(intel, dst, 0, 0);
brw_blorp_blit_miptrees(intel,
src, dst,
src_x0, src_y0,
dst_x0, dst_y0,
width, height,
false, false /*mirror x, y*/);
if (src->stencil_mt) {
brw_blorp_blit_miptrees(intel,
src->stencil_mt, dst->stencil_mt,
src_x0, src_y0,
dst_x0, dst_y0,
width, height,
false, false /*mirror x, y*/);
}
#endif /* I915 */
}
static void
assert_is_flat(struct intel_mipmap_tree *mt)
{
assert(mt->target == GL_TEXTURE_2D);
assert(mt->first_level == 0);
assert(mt->last_level == 0);
}
/**
* \brief Downsample from mt to mt->singlesample_mt.
*
@@ -968,7 +1014,23 @@ void
intel_miptree_downsample(struct intel_context *intel,
struct intel_mipmap_tree *mt)
{
/* TODO: stub */
/* Only flat, renderbuffer-like miptrees are supported. */
assert_is_flat(mt);
if (!mt->need_downsample)
return;
intel_miptree_updownsample(intel,
mt, mt->singlesample_mt,
mt->singlesample_mt->width0,
mt->singlesample_mt->height0);
mt->need_downsample = false;
/* Strictly speaking, after a downsample on a depth miptree, a hiz
* resolve is needed on the singlesample miptree. However, since the
* singlesample miptree is never rendered to, the hiz resolve will never
* occur. Therefore we do not mark the needed hiz resolve after
* downsampling.
*/
}
/**
@@ -980,7 +1042,15 @@ void
intel_miptree_upsample(struct intel_context *intel,
struct intel_mipmap_tree *mt)
{
/* TODO: stub */
/* Only flat, renderbuffer-like miptrees are supported. */
assert_is_flat(mt);
assert(!mt->need_downsample);
intel_miptree_updownsample(intel,
mt->singlesample_mt, mt,
mt->singlesample_mt->width0,
mt->singlesample_mt->height0);
intel_miptree_slice_set_needs_hiz_resolve(mt, 0, 0);
}
static void