[Mesa-dev] [PATCH v2 01/14] i965/hiz: Start to separate miptree out from hiz buffers
Jordan Justen
jordan.l.justen at intel.com
Mon Jul 21 23:00:50 PDT 2014
Today we allocate a miptree's for the hiz buffer. We needed this in
the past because we would point the hardware at offsets of the hiz
buffer. Since the hiz format is not documented, this is not a good
idea.
Since moving to support layered rendering on Gen7+, we no longer point
at an offset into the buffer on Gen7+.
Therefore, to support hiz on Gen7+, we don't need a full miptree
structure allocated.
This patch starts to create a new auxiliary buffer structure
(intel_miptree_aux_buffer) that can be a more simplistic miptree
side-band buffer associated with a miptree. (For example, to serve the
needs of the hiz buffer.)
Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen at intel.com>
---
src/mesa/drivers/dri/i965/brw_misc_state.c | 4 +-
src/mesa/drivers/dri/i965/gen6_blorp.cpp | 2 +-
src/mesa/drivers/dri/i965/gen7_blorp.cpp | 2 +-
src/mesa/drivers/dri/i965/gen7_misc_state.c | 2 +-
src/mesa/drivers/dri/i965/gen8_depth_state.c | 6 +--
src/mesa/drivers/dri/i965/intel_fbo.c | 4 +-
src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 55 +++++++++++++++++++--------
src/mesa/drivers/dri/i965/intel_mipmap_tree.h | 29 ++++++++++++--
8 files changed, 76 insertions(+), 28 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_misc_state.c b/src/mesa/drivers/dri/i965/brw_misc_state.c
index 76e22bd..af900cd 100644
--- a/src/mesa/drivers/dri/i965/brw_misc_state.c
+++ b/src/mesa/drivers/dri/i965/brw_misc_state.c
@@ -182,7 +182,7 @@ brw_get_depthstencil_tile_masks(struct intel_mipmap_tree *depth_mt,
if (intel_miptree_level_has_hiz(depth_mt, depth_level)) {
uint32_t hiz_tile_mask_x, hiz_tile_mask_y;
- intel_miptree_get_tile_masks(depth_mt->hiz_mt,
+ intel_miptree_get_tile_masks(depth_mt->hiz_buf->mt,
&hiz_tile_mask_x, &hiz_tile_mask_y,
false);
@@ -643,7 +643,7 @@ brw_emit_depth_stencil_hiz(struct brw_context *brw,
/* Emit hiz buffer. */
if (hiz) {
- struct intel_mipmap_tree *hiz_mt = depth_mt->hiz_mt;
+ struct intel_mipmap_tree *hiz_mt = depth_mt->hiz_buf->mt;
BEGIN_BATCH(3);
OUT_BATCH((_3DSTATE_HIER_DEPTH_BUFFER << 16) | (3 - 2));
OUT_BATCH(hiz_mt->pitch - 1);
diff --git a/src/mesa/drivers/dri/i965/gen6_blorp.cpp b/src/mesa/drivers/dri/i965/gen6_blorp.cpp
index eb865b9..282c7b2 100644
--- a/src/mesa/drivers/dri/i965/gen6_blorp.cpp
+++ b/src/mesa/drivers/dri/i965/gen6_blorp.cpp
@@ -855,7 +855,7 @@ gen6_blorp_emit_depth_stencil_config(struct brw_context *brw,
/* 3DSTATE_HIER_DEPTH_BUFFER */
{
- struct intel_mipmap_tree *hiz_mt = params->depth.mt->hiz_mt;
+ struct intel_mipmap_tree *hiz_mt = params->depth.mt->hiz_buf->mt;
uint32_t hiz_offset =
intel_miptree_get_aligned_offset(hiz_mt,
draw_x & ~tile_mask_x,
diff --git a/src/mesa/drivers/dri/i965/gen7_blorp.cpp b/src/mesa/drivers/dri/i965/gen7_blorp.cpp
index 0ad570b..d0d623d 100644
--- a/src/mesa/drivers/dri/i965/gen7_blorp.cpp
+++ b/src/mesa/drivers/dri/i965/gen7_blorp.cpp
@@ -752,7 +752,7 @@ gen7_blorp_emit_depth_stencil_config(struct brw_context *brw,
/* 3DSTATE_HIER_DEPTH_BUFFER */
{
- struct intel_mipmap_tree *hiz_mt = params->depth.mt->hiz_mt;
+ struct intel_mipmap_tree *hiz_mt = params->depth.mt->hiz_buf->mt;
BEGIN_BATCH(3);
OUT_BATCH((GEN7_3DSTATE_HIER_DEPTH_BUFFER << 16) | (3 - 2));
diff --git a/src/mesa/drivers/dri/i965/gen7_misc_state.c b/src/mesa/drivers/dri/i965/gen7_misc_state.c
index 22911bf..6c6a79b 100644
--- a/src/mesa/drivers/dri/i965/gen7_misc_state.c
+++ b/src/mesa/drivers/dri/i965/gen7_misc_state.c
@@ -145,7 +145,7 @@ gen7_emit_depth_stencil_hiz(struct brw_context *brw,
OUT_BATCH(0);
ADVANCE_BATCH();
} else {
- struct intel_mipmap_tree *hiz_mt = depth_mt->hiz_mt;
+ struct intel_mipmap_tree *hiz_mt = depth_mt->hiz_buf->mt;
BEGIN_BATCH(3);
OUT_BATCH(GEN7_3DSTATE_HIER_DEPTH_BUFFER << 16 | (3 - 2));
OUT_BATCH((mocs << 25) |
diff --git a/src/mesa/drivers/dri/i965/gen8_depth_state.c b/src/mesa/drivers/dri/i965/gen8_depth_state.c
index 7c3bfe0..b6f373d 100644
--- a/src/mesa/drivers/dri/i965/gen8_depth_state.c
+++ b/src/mesa/drivers/dri/i965/gen8_depth_state.c
@@ -89,10 +89,10 @@ emit_depth_packets(struct brw_context *brw,
} else {
BEGIN_BATCH(5);
OUT_BATCH(GEN7_3DSTATE_HIER_DEPTH_BUFFER << 16 | (5 - 2));
- OUT_BATCH((depth_mt->hiz_mt->pitch - 1) | BDW_MOCS_WB << 25);
- OUT_RELOC64(depth_mt->hiz_mt->bo,
+ OUT_BATCH((depth_mt->hiz_buf->mt->pitch - 1) | BDW_MOCS_WB << 25);
+ OUT_RELOC64(depth_mt->hiz_buf->mt->bo,
I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0);
- OUT_BATCH(depth_mt->hiz_mt->qpitch >> 2);
+ OUT_BATCH(depth_mt->hiz_buf->mt->qpitch >> 2);
ADVANCE_BATCH();
}
diff --git a/src/mesa/drivers/dri/i965/intel_fbo.c b/src/mesa/drivers/dri/i965/intel_fbo.c
index e43e18b..7f9964c 100644
--- a/src/mesa/drivers/dri/i965/intel_fbo.c
+++ b/src/mesa/drivers/dri/i965/intel_fbo.c
@@ -560,9 +560,9 @@ intel_renderbuffer_update_wrapper(struct brw_context *brw,
intel_renderbuffer_set_draw_offset(irb);
- if (mt->hiz_mt == NULL && brw_is_hiz_depth_format(brw, rb->Format)) {
+ if (mt->hiz_buf == NULL && brw_is_hiz_depth_format(brw, rb->Format)) {
intel_miptree_alloc_hiz(brw, mt);
- if (!mt->hiz_mt)
+ if (!mt->hiz_buf)
return false;
}
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index b36ffc7..d5a2227 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -822,7 +822,10 @@ intel_miptree_release(struct intel_mipmap_tree **mt)
drm_intel_bo_unreference((*mt)->bo);
intel_miptree_release(&(*mt)->stencil_mt);
- intel_miptree_release(&(*mt)->hiz_mt);
+ if ((*mt)->hiz_buf) {
+ intel_miptree_release(&(*mt)->hiz_buf->mt);
+ free((*mt)->hiz_buf);
+ }
intel_miptree_release(&(*mt)->mcs_mt);
intel_resolve_map_clear(&(*mt)->hiz_map);
@@ -1347,7 +1350,7 @@ intel_miptree_level_enable_hiz(struct brw_context *brw,
struct intel_mipmap_tree *mt,
uint32_t level)
{
- assert(mt->hiz_mt);
+ assert(mt->hiz_buf);
if (brw->gen >= 8 || brw->is_haswell) {
uint32_t width = minify(mt->physical_width0, level);
@@ -1371,25 +1374,47 @@ intel_miptree_level_enable_hiz(struct brw_context *brw,
}
+static struct intel_miptree_aux_buffer *
+intel_hiz_miptree_buf_create(struct brw_context *brw,
+ struct intel_mipmap_tree *mt)
+{
+ struct intel_miptree_aux_buffer *buf = calloc(sizeof(*buf), 1);
+
+ if (!buf)
+ return NULL;
+
+ buf->mt = intel_miptree_create(brw,
+ mt->target,
+ mt->format,
+ mt->first_level,
+ mt->last_level,
+ mt->logical_width0,
+ mt->logical_height0,
+ mt->logical_depth0,
+ true,
+ mt->num_samples,
+ INTEL_MIPTREE_TILING_ANY);
+ if (!buf->mt) {
+ free(buf);
+ return NULL;
+ }
+
+ buf->bo = buf->mt->bo;
+ buf->pitch = buf->mt->pitch;
+ buf->qpitch = buf->mt->qpitch;
+
+ return buf;
+}
+
bool
intel_miptree_alloc_hiz(struct brw_context *brw,
struct intel_mipmap_tree *mt)
{
- assert(mt->hiz_mt == NULL);
- mt->hiz_mt = intel_miptree_create(brw,
- mt->target,
- mt->format,
- mt->first_level,
- mt->last_level,
- mt->logical_width0,
- mt->logical_height0,
- mt->logical_depth0,
- true,
- mt->num_samples,
- INTEL_MIPTREE_TILING_ANY);
+ assert(mt->hiz_buf == NULL);
+ mt->hiz_buf = intel_hiz_miptree_buf_create(brw, mt);
- if (!mt->hiz_mt)
+ if (!mt->hiz_buf)
return false;
/* Mark that all slices need a HiZ resolve. */
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.h b/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
index bb04084..2a421a1 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
@@ -255,6 +255,29 @@ enum intel_fast_clear_state
INTEL_FAST_CLEAR_STATE_CLEAR,
};
+/**
+ * Miptree aux buffer. These buffers are associated with a miptree, but the
+ * format is managed by the hardware.
+ *
+ * For Gen7+, we always give the hardware the start of the buffer, and let it
+ * handle all accesses to the buffer. Therefore we don't need the full miptree
+ * layout structure for this buffer.
+ *
+ * For Gen6, we need a hiz miptree structure for this buffer so we can program
+ * offsets to slices & miplevels.
+ */
+struct intel_miptree_aux_buffer
+{
+ /** Buffer object containing the pixel data. */
+ drm_intel_bo *bo;
+
+ uint32_t pitch; /**< pitch in bytes. */
+
+ uint32_t qpitch; /**< The distance in rows between array slices. */
+
+ struct intel_mipmap_tree *mt; /**< hiz miptree used with Gen6 */
+};
+
struct intel_mipmap_tree
{
/** Buffer object containing the pixel data. */
@@ -362,15 +385,15 @@ struct intel_mipmap_tree
uint32_t offset;
/**
- * \brief HiZ miptree
+ * \brief HiZ aux buffer
*
* The hiz miptree contains the miptree's hiz buffer. To allocate the hiz
- * miptree, use intel_miptree_alloc_hiz().
+ * buffer, use intel_miptree_alloc_hiz().
*
* To determine if hiz is enabled, do not check this pointer. Instead, use
* intel_miptree_slice_has_hiz().
*/
- struct intel_mipmap_tree *hiz_mt;
+ struct intel_miptree_aux_buffer *hiz_buf;
/**
* \brief Map of miptree slices to needed resolves.
--
2.0.1
More information about the mesa-dev
mailing list