Mesa (master): i965/hiz: Start to separate miptree out from hiz buffers
Jordan Justen
jljusten at kemper.freedesktop.org
Tue Mar 10 07:34:10 UTC 2015
Module: Mesa
Branch: master
Commit: aedcd466bb9d899e892f9d47f96fbca5e5647133
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=aedcd466bb9d899e892f9d47f96fbca5e5647133
Author: Jordan Justen <jordan.l.justen at intel.com>
Date: Sun Jun 29 11:55:26 2014 -0700
i965/hiz: Start to separate miptree out from hiz buffers
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>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Ben Widawsky <ben at bwidawsk.net>
---
src/mesa/drivers/dri/i965/brw_misc_state.c | 4 +-
src/mesa/drivers/dri/i965/gen6_blorp.cpp | 2 +-
src/mesa/drivers/dri/i965/gen6_depth_state.c | 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 | 59 ++++++++++++++++++-------
src/mesa/drivers/dri/i965/intel_mipmap_tree.h | 29 ++++++++++--
9 files changed, 79 insertions(+), 31 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_misc_state.c b/src/mesa/drivers/dri/i965/brw_misc_state.c
index 190cdf7..bc81076 100644
--- a/src/mesa/drivers/dri/i965/brw_misc_state.c
+++ b/src/mesa/drivers/dri/i965/brw_misc_state.c
@@ -172,7 +172,7 @@ 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);
@@ -632,7 +632,7 @@ 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 372846b..e45705a 100644
--- a/src/mesa/drivers/dri/i965/gen6_blorp.cpp
+++ b/src/mesa/drivers/dri/i965/gen6_blorp.cpp
@@ -857,7 +857,7 @@ 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 offset = 0;
if (hiz_mt->array_layout == ALL_SLICES_AT_EACH_LOD) {
diff --git a/src/mesa/drivers/dri/i965/gen6_depth_state.c b/src/mesa/drivers/dri/i965/gen6_depth_state.c
index effb9c6..1df0bd4 100644
--- a/src/mesa/drivers/dri/i965/gen6_depth_state.c
+++ b/src/mesa/drivers/dri/i965/gen6_depth_state.c
@@ -156,7 +156,7 @@ gen6_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;
uint32_t offset = 0;
if (hiz_mt->array_layout == ALL_SLICES_AT_EACH_LOD) {
diff --git a/src/mesa/drivers/dri/i965/gen7_blorp.cpp b/src/mesa/drivers/dri/i965/gen7_blorp.cpp
index 206a6ff..6ba65d6 100644
--- a/src/mesa/drivers/dri/i965/gen7_blorp.cpp
+++ b/src/mesa/drivers/dri/i965/gen7_blorp.cpp
@@ -695,7 +695,7 @@ 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 33d4ade..cc74570 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 5c56d51..9af9898 100644
--- a/src/mesa/drivers/dri/i965/gen8_depth_state.c
+++ b/src/mesa/drivers/dri/i965/gen8_depth_state.c
@@ -92,10 +92,10 @@ 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) | mocs_wb << 25);
- OUT_RELOC64(depth_mt->hiz_mt->bo,
+ OUT_BATCH((depth_mt->hiz_buf->mt->pitch - 1) | 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 57cf583..2cf4771 100644
--- a/src/mesa/drivers/dri/i965/intel_fbo.c
+++ b/src/mesa/drivers/dri/i965/intel_fbo.c
@@ -561,9 +561,9 @@ 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 36c3b26..6c4cc7f 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -883,7 +883,10 @@ 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);
@@ -1415,7 +1418,7 @@ 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);
@@ -1439,27 +1442,49 @@ 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);
+ const bool force_all_slices_at_each_lod = brw->gen == 6;
+
+ 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,
+ force_all_slices_at_each_lod);
+ 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);
- const bool force_all_slices_at_each_lod = brw->gen == 6;
- 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,
- force_all_slices_at_each_lod);
+ 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 ee9cf1e..41b6036 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
@@ -307,6 +307,29 @@ enum miptree_array_layout {
ALL_SLICES_AT_EACH_LOD,
};
+/**
+ * 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. */
@@ -411,15 +434,15 @@ 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.
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