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android / platform / external / mesa3d / ef961309bfa2c968710994b1bff87e6a13def150 / . / src / intel / isl / isl.c
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/*
* Copyright 2015 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include "genxml/genX_bits.h"
#include "isl.h"
#include "isl_gen4.h"
#include "isl_gen6.h"
#include "isl_gen7.h"
#include "isl_gen8.h"
#include "isl_gen9.h"
#include "isl_priv.h"
void
isl_memcpy_linear_to_tiled(uint32_t xt1, uint32_t xt2,
uint32_t yt1, uint32_t yt2,
char *dst, const char *src,
uint32_t dst_pitch, int32_t src_pitch,
bool has_swizzling,
enum isl_tiling tiling,
isl_memcpy_type copy_type)
{
#ifdef USE_SSE41
if (copy_type == ISL_MEMCPY_STREAMING_LOAD) {
_isl_memcpy_linear_to_tiled_sse41(
xt1, xt2, yt1, yt2, dst, src, dst_pitch, src_pitch, has_swizzling,
tiling, copy_type);
return;
}
#endif
_isl_memcpy_linear_to_tiled(
xt1, xt2, yt1, yt2, dst, src, dst_pitch, src_pitch, has_swizzling,
tiling, copy_type);
}
void
isl_memcpy_tiled_to_linear(uint32_t xt1, uint32_t xt2,
uint32_t yt1, uint32_t yt2,
char *dst, const char *src,
int32_t dst_pitch, uint32_t src_pitch,
bool has_swizzling,
enum isl_tiling tiling,
isl_memcpy_type copy_type)
{
#ifdef USE_SSE41
if (copy_type == ISL_MEMCPY_STREAMING_LOAD) {
_isl_memcpy_tiled_to_linear_sse41(
xt1, xt2, yt1, yt2, dst, src, dst_pitch, src_pitch, has_swizzling,
tiling, copy_type);
return;
}
#endif
_isl_memcpy_tiled_to_linear(
xt1, xt2, yt1, yt2, dst, src, dst_pitch, src_pitch, has_swizzling,
tiling, copy_type);
}
void PRINTFLIKE(3, 4) UNUSED
__isl_finishme(const char *file, int line, const char *fmt, ...)
{
va_list ap;
char buf[512];
va_start(ap, fmt);
vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
fprintf(stderr, "%s:%d: FINISHME: %s\n", file, line, buf);
}
void
isl_device_init(struct isl_device *dev,
const struct gen_device_info *info,
bool has_bit6_swizzling)
{
dev->info = info;
dev->use_separate_stencil = ISL_DEV_GEN(dev) >= 6;
dev->has_bit6_swizzling = has_bit6_swizzling;
/* The ISL_DEV macros may be defined in the CFLAGS, thus hardcoding some
* device properties at buildtime. Verify that the macros with the device
* properties chosen during runtime.
*/
ISL_DEV_GEN_SANITIZE(dev);
ISL_DEV_USE_SEPARATE_STENCIL_SANITIZE(dev);
/* Did we break hiz or stencil? */
if (ISL_DEV_USE_SEPARATE_STENCIL(dev))
assert(info->has_hiz_and_separate_stencil);
if (info->must_use_separate_stencil)
assert(ISL_DEV_USE_SEPARATE_STENCIL(dev));
dev->ss.size = RENDER_SURFACE_STATE_length(info) * 4;
dev->ss.align = isl_align(dev->ss.size, 32);
dev->ss.clear_color_state_size = CLEAR_COLOR_length(info) * 4;
dev->ss.clear_color_state_offset =
RENDER_SURFACE_STATE_ClearValueAddress_start(info) / 32 * 4;
dev->ss.clear_value_size =
isl_align(RENDER_SURFACE_STATE_RedClearColor_bits(info) +
RENDER_SURFACE_STATE_GreenClearColor_bits(info) +
RENDER_SURFACE_STATE_BlueClearColor_bits(info) +
RENDER_SURFACE_STATE_AlphaClearColor_bits(info), 32) / 8;
dev->ss.clear_value_offset =
RENDER_SURFACE_STATE_RedClearColor_start(info) / 32 * 4;
assert(RENDER_SURFACE_STATE_SurfaceBaseAddress_start(info) % 8 == 0);
dev->ss.addr_offset =
RENDER_SURFACE_STATE_SurfaceBaseAddress_start(info) / 8;
/* The "Auxiliary Surface Base Address" field starts a bit higher up
* because the bottom 12 bits are used for other things. Round down to
* the nearest dword before.
*/
dev->ss.aux_addr_offset =
(RENDER_SURFACE_STATE_AuxiliarySurfaceBaseAddress_start(info) & ~31) / 8;
dev->ds.size = _3DSTATE_DEPTH_BUFFER_length(info) * 4;
assert(_3DSTATE_DEPTH_BUFFER_SurfaceBaseAddress_start(info) % 8 == 0);
dev->ds.depth_offset =
_3DSTATE_DEPTH_BUFFER_SurfaceBaseAddress_start(info) / 8;
if (dev->use_separate_stencil) {
dev->ds.size += _3DSTATE_STENCIL_BUFFER_length(info) * 4 +
_3DSTATE_HIER_DEPTH_BUFFER_length(info) * 4 +
_3DSTATE_CLEAR_PARAMS_length(info) * 4;
assert(_3DSTATE_STENCIL_BUFFER_SurfaceBaseAddress_start(info) % 8 == 0);
dev->ds.stencil_offset =
_3DSTATE_DEPTH_BUFFER_length(info) * 4 +
_3DSTATE_STENCIL_BUFFER_SurfaceBaseAddress_start(info) / 8;
assert(_3DSTATE_HIER_DEPTH_BUFFER_SurfaceBaseAddress_start(info) % 8 == 0);
dev->ds.hiz_offset =
_3DSTATE_DEPTH_BUFFER_length(info) * 4 +
_3DSTATE_STENCIL_BUFFER_length(info) * 4 +
_3DSTATE_HIER_DEPTH_BUFFER_SurfaceBaseAddress_start(info) / 8;
} else {
dev->ds.stencil_offset = 0;
dev->ds.hiz_offset = 0;
}
}
/**
* @brief Query the set of multisamples supported by the device.
*
* This function always returns non-zero, as ISL_SAMPLE_COUNT_1_BIT is always
* supported.
*/
isl_sample_count_mask_t ATTRIBUTE_CONST
isl_device_get_sample_counts(struct isl_device *dev)
{
if (ISL_DEV_GEN(dev) >= 9) {
return ISL_SAMPLE_COUNT_1_BIT |
ISL_SAMPLE_COUNT_2_BIT |
ISL_SAMPLE_COUNT_4_BIT |
ISL_SAMPLE_COUNT_8_BIT |
ISL_SAMPLE_COUNT_16_BIT;
} else if (ISL_DEV_GEN(dev) >= 8) {
return ISL_SAMPLE_COUNT_1_BIT |
ISL_SAMPLE_COUNT_2_BIT |
ISL_SAMPLE_COUNT_4_BIT |
ISL_SAMPLE_COUNT_8_BIT;
} else if (ISL_DEV_GEN(dev) >= 7) {
return ISL_SAMPLE_COUNT_1_BIT |
ISL_SAMPLE_COUNT_4_BIT |
ISL_SAMPLE_COUNT_8_BIT;
} else if (ISL_DEV_GEN(dev) >= 6) {
return ISL_SAMPLE_COUNT_1_BIT |
ISL_SAMPLE_COUNT_4_BIT;
} else {
return ISL_SAMPLE_COUNT_1_BIT;
}
}
/**
* @param[out] info is written only on success
*/
static void
isl_tiling_get_info(enum isl_tiling tiling,
uint32_t format_bpb,
struct isl_tile_info *tile_info)
{
const uint32_t bs = format_bpb / 8;
struct isl_extent2d logical_el, phys_B;
if (tiling != ISL_TILING_LINEAR && !isl_is_pow2(format_bpb)) {
/* It is possible to have non-power-of-two formats in a tiled buffer.
* The easiest way to handle this is to treat the tile as if it is three
* times as wide. This way no pixel will ever cross a tile boundary.
* This really only works on legacy X and Y tiling formats.
*/
assert(tiling == ISL_TILING_X || tiling == ISL_TILING_Y0);
assert(bs % 3 == 0 && isl_is_pow2(format_bpb / 3));
isl_tiling_get_info(tiling, format_bpb / 3, tile_info);
return;
}
switch (tiling) {
case ISL_TILING_LINEAR:
assert(bs > 0);
logical_el = isl_extent2d(1, 1);
phys_B = isl_extent2d(bs, 1);
break;
case ISL_TILING_X:
assert(bs > 0);
logical_el = isl_extent2d(512 / bs, 8);
phys_B = isl_extent2d(512, 8);
break;
case ISL_TILING_Y0:
assert(bs > 0);
logical_el = isl_extent2d(128 / bs, 32);
phys_B = isl_extent2d(128, 32);
break;
case ISL_TILING_W:
assert(bs == 1);
logical_el = isl_extent2d(64, 64);
/* From the Broadwell PRM Vol 2d, RENDER_SURFACE_STATE::SurfacePitch:
*
* "If the surface is a stencil buffer (and thus has Tile Mode set
* to TILEMODE_WMAJOR), the pitch must be set to 2x the value
* computed based on width, as the stencil buffer is stored with two
* rows interleaved."
*
* This, together with the fact that stencil buffers are referred to as
* being Y-tiled in the PRMs for older hardware implies that the
* physical size of a W-tile is actually the same as for a Y-tile.
*/
phys_B = isl_extent2d(128, 32);
break;
case ISL_TILING_Yf:
case ISL_TILING_Ys: {
bool is_Ys = tiling == ISL_TILING_Ys;
assert(bs > 0);
unsigned width = 1 << (6 + (ffs(bs) / 2) + (2 * is_Ys));
unsigned height = 1 << (6 - (ffs(bs) / 2) + (2 * is_Ys));
logical_el = isl_extent2d(width / bs, height);
phys_B = isl_extent2d(width, height);
break;
}
case ISL_TILING_HIZ:
/* HiZ buffers are required to have ISL_FORMAT_HIZ which is an 8x4
* 128bpb format. The tiling has the same physical dimensions as
* Y-tiling but actually has two HiZ columns per Y-tiled column.
*/
assert(bs == 16);
logical_el = isl_extent2d(16, 16);
phys_B = isl_extent2d(128, 32);
break;
case ISL_TILING_CCS:
/* CCS surfaces are required to have one of the GENX_CCS_* formats which
* have a block size of 1 or 2 bits per block and each CCS element
* corresponds to one cache-line pair in the main surface. From the Sky
* Lake PRM Vol. 12 in the section on planes:
*
* "The Color Control Surface (CCS) contains the compression status
* of the cache-line pairs. The compression state of the cache-line
* pair is specified by 2 bits in the CCS. Each CCS cache-line
* represents an area on the main surface of 16x16 sets of 128 byte
* Y-tiled cache-line-pairs. CCS is always Y tiled."
*
* The CCS being Y-tiled implies that it's an 8x8 grid of cache-lines.
* Since each cache line corresponds to a 16x16 set of cache-line pairs,
* that yields total tile area of 128x128 cache-line pairs or CCS
* elements. On older hardware, each CCS element is 1 bit and the tile
* is 128x256 elements.
*/
assert(format_bpb == 1 || format_bpb == 2);
logical_el = isl_extent2d(128, 256 / format_bpb);
phys_B = isl_extent2d(128, 32);
break;
default:
unreachable("not reached");
} /* end switch */
*tile_info = (struct isl_tile_info) {
.tiling = tiling,
.format_bpb = format_bpb,
.logical_extent_el = logical_el,
.phys_extent_B = phys_B,
};
}
bool
isl_color_value_is_zero(union isl_color_value value,
enum isl_format format)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(format);
#define RETURN_FALSE_IF_NOT_0(c, i) \
if (fmtl->channels.c.bits && value.u32[i] != 0) \
return false
RETURN_FALSE_IF_NOT_0(r, 0);
RETURN_FALSE_IF_NOT_0(g, 1);
RETURN_FALSE_IF_NOT_0(b, 2);
RETURN_FALSE_IF_NOT_0(a, 3);
#undef RETURN_FALSE_IF_NOT_0
return true;
}
bool
isl_color_value_is_zero_one(union isl_color_value value,
enum isl_format format)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(format);
#define RETURN_FALSE_IF_NOT_0_1(c, i, field) \
if (fmtl->channels.c.bits && value.field[i] != 0 && value.field[i] != 1) \
return false
if (isl_format_has_int_channel(format)) {
RETURN_FALSE_IF_NOT_0_1(r, 0, u32);
RETURN_FALSE_IF_NOT_0_1(g, 1, u32);
RETURN_FALSE_IF_NOT_0_1(b, 2, u32);
RETURN_FALSE_IF_NOT_0_1(a, 3, u32);
} else {
RETURN_FALSE_IF_NOT_0_1(r, 0, f32);
RETURN_FALSE_IF_NOT_0_1(g, 1, f32);
RETURN_FALSE_IF_NOT_0_1(b, 2, f32);
RETURN_FALSE_IF_NOT_0_1(a, 3, f32);
}
#undef RETURN_FALSE_IF_NOT_0_1
return true;
}
/**
* @param[out] tiling is set only on success
*/
static bool
isl_surf_choose_tiling(const struct isl_device *dev,
const struct isl_surf_init_info *restrict info,
enum isl_tiling *tiling)
{
isl_tiling_flags_t tiling_flags = info->tiling_flags;
/* HiZ surfaces always use the HiZ tiling */
if (info->usage & ISL_SURF_USAGE_HIZ_BIT) {
assert(info->format == ISL_FORMAT_HIZ);
assert(tiling_flags == ISL_TILING_HIZ_BIT);
*tiling = ISL_TILING_HIZ;
return true;
}
/* CCS surfaces always use the CCS tiling */
if (info->usage & ISL_SURF_USAGE_CCS_BIT) {
assert(isl_format_get_layout(info->format)->txc == ISL_TXC_CCS);
assert(tiling_flags == ISL_TILING_CCS_BIT);
*tiling = ISL_TILING_CCS;
return true;
}
if (ISL_DEV_GEN(dev) >= 6) {
isl_gen6_filter_tiling(dev, info, &tiling_flags);
} else {
isl_gen4_filter_tiling(dev, info, &tiling_flags);
}
#define CHOOSE(__tiling) \
do { \
if (tiling_flags & (1u << (__tiling))) { \
*tiling = (__tiling); \
return true; \
} \
} while (0)
/* Of the tiling modes remaining, choose the one that offers the best
* performance.
*/
if (info->dim == ISL_SURF_DIM_1D) {
/* Prefer linear for 1D surfaces because they do not benefit from
* tiling. To the contrary, tiling leads to wasted memory and poor
* memory locality due to the swizzling and alignment restrictions
* required in tiled surfaces.
*/
CHOOSE(ISL_TILING_LINEAR);
}
CHOOSE(ISL_TILING_Ys);
CHOOSE(ISL_TILING_Yf);
CHOOSE(ISL_TILING_Y0);
CHOOSE(ISL_TILING_X);
CHOOSE(ISL_TILING_W);
CHOOSE(ISL_TILING_LINEAR);
#undef CHOOSE
/* No tiling mode accomodates the inputs. */
return false;
}
static bool
isl_choose_msaa_layout(const struct isl_device *dev,
const struct isl_surf_init_info *info,
enum isl_tiling tiling,
enum isl_msaa_layout *msaa_layout)
{
if (ISL_DEV_GEN(dev) >= 8) {
return isl_gen8_choose_msaa_layout(dev, info, tiling, msaa_layout);
} else if (ISL_DEV_GEN(dev) >= 7) {
return isl_gen7_choose_msaa_layout(dev, info, tiling, msaa_layout);
} else if (ISL_DEV_GEN(dev) >= 6) {
return isl_gen6_choose_msaa_layout(dev, info, tiling, msaa_layout);
} else {
return isl_gen4_choose_msaa_layout(dev, info, tiling, msaa_layout);
}
}
struct isl_extent2d
isl_get_interleaved_msaa_px_size_sa(uint32_t samples)
{
assert(isl_is_pow2(samples));
/* From the Broadwell PRM >> Volume 5: Memory Views >> Computing Mip Level
* Sizes (p133):
*
* If the surface is multisampled and it is a depth or stencil surface
* or Multisampled Surface StorageFormat in SURFACE_STATE is
* MSFMT_DEPTH_STENCIL, W_L and H_L must be adjusted as follows before
* proceeding: [...]
*/
return (struct isl_extent2d) {
.width = 1 << ((ffs(samples) - 0) / 2),
.height = 1 << ((ffs(samples) - 1) / 2),
};
}
static void
isl_msaa_interleaved_scale_px_to_sa(uint32_t samples,
uint32_t *width, uint32_t *height)
{
const struct isl_extent2d px_size_sa =
isl_get_interleaved_msaa_px_size_sa(samples);
if (width)
*width = isl_align(*width, 2) * px_size_sa.width;
if (height)
*height = isl_align(*height, 2) * px_size_sa.height;
}
static enum isl_array_pitch_span
isl_choose_array_pitch_span(const struct isl_device *dev,
const struct isl_surf_init_info *restrict info,
enum isl_dim_layout dim_layout,
const struct isl_extent4d *phys_level0_sa)
{
switch (dim_layout) {
case ISL_DIM_LAYOUT_GEN9_1D:
case ISL_DIM_LAYOUT_GEN4_2D:
if (ISL_DEV_GEN(dev) >= 8) {
/* QPitch becomes programmable in Broadwell. So choose the
* most compact QPitch possible in order to conserve memory.
*
* From the Broadwell PRM >> Volume 2d: Command Reference: Structures
* >> RENDER_SURFACE_STATE Surface QPitch (p325):
*
* - Software must ensure that this field is set to a value
* sufficiently large such that the array slices in the surface
* do not overlap. Refer to the Memory Data Formats section for
* information on how surfaces are stored in memory.
*
* - This field specifies the distance in rows between array
* slices. It is used only in the following cases:
*
* - Surface Array is enabled OR
* - Number of Mulitsamples is not NUMSAMPLES_1 and
* Multisampled Surface Storage Format set to MSFMT_MSS OR
* - Surface Type is SURFTYPE_CUBE
*/
return ISL_ARRAY_PITCH_SPAN_COMPACT;
} else if (ISL_DEV_GEN(dev) >= 7) {
/* Note that Ivybridge introduces
* RENDER_SURFACE_STATE.SurfaceArraySpacing, which provides the
* driver more control over the QPitch.
*/
if (phys_level0_sa->array_len == 1) {
/* The hardware will never use the QPitch. So choose the most
* compact QPitch possible in order to conserve memory.
*/
return ISL_ARRAY_PITCH_SPAN_COMPACT;
}
if (isl_surf_usage_is_depth_or_stencil(info->usage) ||
(info->usage & ISL_SURF_USAGE_HIZ_BIT)) {
/* From the Ivybridge PRM >> Volume 1 Part 1: Graphics Core >>
* Section 6.18.4.7: Surface Arrays (p112):
*
* If Surface Array Spacing is set to ARYSPC_FULL (note that
* the depth buffer and stencil buffer have an implied value of
* ARYSPC_FULL):
*/
return ISL_ARRAY_PITCH_SPAN_FULL;
}
if (info->levels == 1) {
/* We are able to set RENDER_SURFACE_STATE.SurfaceArraySpacing
* to ARYSPC_LOD0.
*/
return ISL_ARRAY_PITCH_SPAN_COMPACT;
}
return ISL_ARRAY_PITCH_SPAN_FULL;
} else if ((ISL_DEV_GEN(dev) == 5 || ISL_DEV_GEN(dev) == 6) &&
ISL_DEV_USE_SEPARATE_STENCIL(dev) &&
isl_surf_usage_is_stencil(info->usage)) {
/* [ILK-SNB] Errata from the Sandy Bridge PRM >> Volume 4 Part 1:
* Graphics Core >> Section 7.18.3.7: Surface Arrays:
*
* The separate stencil buffer does not support mip mapping, thus
* the storage for LODs other than LOD 0 is not needed.
*/
assert(info->levels == 1);
return ISL_ARRAY_PITCH_SPAN_COMPACT;
} else {
if ((ISL_DEV_GEN(dev) == 5 || ISL_DEV_GEN(dev) == 6) &&
ISL_DEV_USE_SEPARATE_STENCIL(dev) &&
isl_surf_usage_is_stencil(info->usage)) {
/* [ILK-SNB] Errata from the Sandy Bridge PRM >> Volume 4 Part 1:
* Graphics Core >> Section 7.18.3.7: Surface Arrays:
*
* The separate stencil buffer does not support mip mapping,
* thus the storage for LODs other than LOD 0 is not needed.
*/
assert(info->levels == 1);
assert(phys_level0_sa->array_len == 1);
return ISL_ARRAY_PITCH_SPAN_COMPACT;
}
if (phys_level0_sa->array_len == 1) {
/* The hardware will never use the QPitch. So choose the most
* compact QPitch possible in order to conserve memory.
*/
return ISL_ARRAY_PITCH_SPAN_COMPACT;
}
return ISL_ARRAY_PITCH_SPAN_FULL;
}
case ISL_DIM_LAYOUT_GEN4_3D:
/* The hardware will never use the QPitch. So choose the most
* compact QPitch possible in order to conserve memory.
*/
return ISL_ARRAY_PITCH_SPAN_COMPACT;
case ISL_DIM_LAYOUT_GEN6_STENCIL_HIZ:
/* Each array image in the gen6 stencil of HiZ surface is compact in the
* sense that every LOD is a compact array of the same size as LOD0.
*/
return ISL_ARRAY_PITCH_SPAN_COMPACT;
}
unreachable("bad isl_dim_layout");
return ISL_ARRAY_PITCH_SPAN_FULL;
}
static void
isl_choose_image_alignment_el(const struct isl_device *dev,
const struct isl_surf_init_info *restrict info,
enum isl_tiling tiling,
enum isl_dim_layout dim_layout,
enum isl_msaa_layout msaa_layout,
struct isl_extent3d *image_align_el)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(info->format);
if (fmtl->txc == ISL_TXC_MCS) {
assert(tiling == ISL_TILING_Y0);
/*
* IvyBrigde PRM Vol 2, Part 1, "11.7 MCS Buffer for Render Target(s)":
*
* Height, width, and layout of MCS buffer in this case must match with
* Render Target height, width, and layout. MCS buffer is tiledY.
*
* To avoid wasting memory, choose the smallest alignment possible:
* HALIGN_4 and VALIGN_4.
*/
*image_align_el = isl_extent3d(4, 4, 1);
return;
} else if (info->format == ISL_FORMAT_HIZ) {
assert(ISL_DEV_GEN(dev) >= 6);
if (ISL_DEV_GEN(dev) == 6) {
/* HiZ surfaces on Sandy Bridge are packed tightly. */
*image_align_el = isl_extent3d(1, 1, 1);
} else {
/* On gen7+, HiZ surfaces are always aligned to 16x8 pixels in the
* primary surface which works out to 2x2 HiZ elments.
*/
*image_align_el = isl_extent3d(2, 2, 1);
}
return;
}
if (ISL_DEV_GEN(dev) >= 9) {
isl_gen9_choose_image_alignment_el(dev, info, tiling, dim_layout,
msaa_layout, image_align_el);
} else if (ISL_DEV_GEN(dev) >= 8) {
isl_gen8_choose_image_alignment_el(dev, info, tiling, dim_layout,
msaa_layout, image_align_el);
} else if (ISL_DEV_GEN(dev) >= 7) {
isl_gen7_choose_image_alignment_el(dev, info, tiling, dim_layout,
msaa_layout, image_align_el);
} else if (ISL_DEV_GEN(dev) >= 6) {
isl_gen6_choose_image_alignment_el(dev, info, tiling, dim_layout,
msaa_layout, image_align_el);
} else {
isl_gen4_choose_image_alignment_el(dev, info, tiling, dim_layout,
msaa_layout, image_align_el);
}
}
static enum isl_dim_layout
isl_surf_choose_dim_layout(const struct isl_device *dev,
enum isl_surf_dim logical_dim,
enum isl_tiling tiling,
isl_surf_usage_flags_t usage)
{
/* Sandy bridge needs a special layout for HiZ and stencil. */
if (ISL_DEV_GEN(dev) == 6 &&
(tiling == ISL_TILING_W || tiling == ISL_TILING_HIZ))
return ISL_DIM_LAYOUT_GEN6_STENCIL_HIZ;
if (ISL_DEV_GEN(dev) >= 9) {
switch (logical_dim) {
case ISL_SURF_DIM_1D:
/* From the Sky Lake PRM Vol. 5, "1D Surfaces":
*
* One-dimensional surfaces use a tiling mode of linear.
* Technically, they are not tiled resources, but the Tiled
* Resource Mode field in RENDER_SURFACE_STATE is still used to
* indicate the alignment requirements for this linear surface
* (See 1D Alignment requirements for how 4K and 64KB Tiled
* Resource Modes impact alignment). Alternatively, a 1D surface
* can be defined as a 2D tiled surface (e.g. TileY or TileX) with
* a height of 0.
*
* In other words, ISL_DIM_LAYOUT_GEN9_1D is only used for linear
* surfaces and, for tiled surfaces, ISL_DIM_LAYOUT_GEN4_2D is used.
*/
if (tiling == ISL_TILING_LINEAR)
return ISL_DIM_LAYOUT_GEN9_1D;
else
return ISL_DIM_LAYOUT_GEN4_2D;
case ISL_SURF_DIM_2D:
case ISL_SURF_DIM_3D:
return ISL_DIM_LAYOUT_GEN4_2D;
}
} else {
switch (logical_dim) {
case ISL_SURF_DIM_1D:
case ISL_SURF_DIM_2D:
/* From the G45 PRM Vol. 1a, "6.17.4.1 Hardware Cube Map Layout":
*
* The cube face textures are stored in the same way as 3D surfaces
* are stored (see section 6.17.5 for details). For cube surfaces,
* however, the depth is equal to the number of faces (always 6) and
* is not reduced for each MIP.
*/
if (ISL_DEV_GEN(dev) == 4 && (usage & ISL_SURF_USAGE_CUBE_BIT))
return ISL_DIM_LAYOUT_GEN4_3D;
return ISL_DIM_LAYOUT_GEN4_2D;
case ISL_SURF_DIM_3D:
return ISL_DIM_LAYOUT_GEN4_3D;
}
}
unreachable("bad isl_surf_dim");
return ISL_DIM_LAYOUT_GEN4_2D;
}
/**
* Calculate the physical extent of the surface's first level, in units of
* surface samples. The result is aligned to the format's compression block.
*/
static void
isl_calc_phys_level0_extent_sa(const struct isl_device *dev,
const struct isl_surf_init_info *restrict info,
enum isl_dim_layout dim_layout,
enum isl_tiling tiling,
enum isl_msaa_layout msaa_layout,
struct isl_extent4d *phys_level0_sa)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(info->format);
if (isl_format_is_yuv(info->format))
isl_finishme("%s:%s: YUV format", __FILE__, __func__);
switch (info->dim) {
case ISL_SURF_DIM_1D:
assert(info->height == 1);
assert(info->depth == 1);
assert(info->samples == 1);
switch (dim_layout) {
case ISL_DIM_LAYOUT_GEN4_3D:
unreachable("bad isl_dim_layout");
case ISL_DIM_LAYOUT_GEN9_1D:
case ISL_DIM_LAYOUT_GEN4_2D:
case ISL_DIM_LAYOUT_GEN6_STENCIL_HIZ:
*phys_level0_sa = (struct isl_extent4d) {
.w = isl_align_npot(info->width, fmtl->bw),
.h = fmtl->bh,
.d = 1,
.a = info->array_len,
};
break;
}
break;
case ISL_SURF_DIM_2D:
if (ISL_DEV_GEN(dev) == 4 && (info->usage & ISL_SURF_USAGE_CUBE_BIT))
assert(dim_layout == ISL_DIM_LAYOUT_GEN4_3D);
else
assert(dim_layout == ISL_DIM_LAYOUT_GEN4_2D ||
dim_layout == ISL_DIM_LAYOUT_GEN6_STENCIL_HIZ);
if (tiling == ISL_TILING_Ys && info->samples > 1)
isl_finishme("%s:%s: multisample TileYs layout", __FILE__, __func__);
switch (msaa_layout) {
case ISL_MSAA_LAYOUT_NONE:
assert(info->depth == 1);
assert(info->samples == 1);
*phys_level0_sa = (struct isl_extent4d) {
.w = isl_align_npot(info->width, fmtl->bw),
.h = isl_align_npot(info->height, fmtl->bh),
.d = 1,
.a = info->array_len,
};
break;
case ISL_MSAA_LAYOUT_ARRAY:
assert(info->depth == 1);
assert(info->levels == 1);
assert(isl_format_supports_multisampling(dev->info, info->format));
assert(fmtl->bw == 1 && fmtl->bh == 1);
*phys_level0_sa = (struct isl_extent4d) {
.w = info->width,
.h = info->height,
.d = 1,
.a = info->array_len * info->samples,
};
break;
case ISL_MSAA_LAYOUT_INTERLEAVED:
assert(info->depth == 1);
assert(info->levels == 1);
assert(isl_format_supports_multisampling(dev->info, info->format));
*phys_level0_sa = (struct isl_extent4d) {
.w = info->width,
.h = info->height,
.d = 1,
.a = info->array_len,
};
isl_msaa_interleaved_scale_px_to_sa(info->samples,
&phys_level0_sa->w,
&phys_level0_sa->h);
phys_level0_sa->w = isl_align(phys_level0_sa->w, fmtl->bw);
phys_level0_sa->h = isl_align(phys_level0_sa->h, fmtl->bh);
break;
}
break;
case ISL_SURF_DIM_3D:
assert(info->array_len == 1);
assert(info->samples == 1);
if (fmtl->bd > 1) {
isl_finishme("%s:%s: compression block with depth > 1",
__FILE__, __func__);
}
switch (dim_layout) {
case ISL_DIM_LAYOUT_GEN9_1D:
case ISL_DIM_LAYOUT_GEN6_STENCIL_HIZ:
unreachable("bad isl_dim_layout");
case ISL_DIM_LAYOUT_GEN4_2D:
assert(ISL_DEV_GEN(dev) >= 9);
*phys_level0_sa = (struct isl_extent4d) {
.w = isl_align_npot(info->width, fmtl->bw),
.h = isl_align_npot(info->height, fmtl->bh),
.d = 1,
.a = info->depth,
};
break;
case ISL_DIM_LAYOUT_GEN4_3D:
assert(ISL_DEV_GEN(dev) < 9);
*phys_level0_sa = (struct isl_extent4d) {
.w = isl_align(info->width, fmtl->bw),
.h = isl_align(info->height, fmtl->bh),
.d = info->depth,
.a = 1,
};
break;
}
break;
}
}
/**
* Calculate the pitch between physical array slices, in units of rows of
* surface elements.
*/
static uint32_t
isl_calc_array_pitch_el_rows_gen4_2d(
const struct isl_device *dev,
const struct isl_surf_init_info *restrict info,
const struct isl_tile_info *tile_info,
const struct isl_extent3d *image_align_sa,
const struct isl_extent4d *phys_level0_sa,
enum isl_array_pitch_span array_pitch_span,
const struct isl_extent2d *phys_slice0_sa)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(info->format);
uint32_t pitch_sa_rows = 0;
switch (array_pitch_span) {
case ISL_ARRAY_PITCH_SPAN_COMPACT:
pitch_sa_rows = isl_align_npot(phys_slice0_sa->h, image_align_sa->h);
break;
case ISL_ARRAY_PITCH_SPAN_FULL: {
/* The QPitch equation is found in the Broadwell PRM >> Volume 5:
* Memory Views >> Common Surface Formats >> Surface Layout >> 2D
* Surfaces >> Surface Arrays.
*/
uint32_t H0_sa = phys_level0_sa->h;
uint32_t H1_sa = isl_minify(H0_sa, 1);
uint32_t h0_sa = isl_align_npot(H0_sa, image_align_sa->h);
uint32_t h1_sa = isl_align_npot(H1_sa, image_align_sa->h);
uint32_t m;
if (ISL_DEV_GEN(dev) >= 7) {
/* The QPitch equation changed slightly in Ivybridge. */
m = 12;
} else {
m = 11;
}
pitch_sa_rows = h0_sa + h1_sa + (m * image_align_sa->h);
if (ISL_DEV_GEN(dev) == 6 && info->samples > 1 &&
(info->height % 4 == 1)) {
/* [SNB] Errata from the Sandy Bridge PRM >> Volume 4 Part 1:
* Graphics Core >> Section 7.18.3.7: Surface Arrays:
*
* [SNB] Errata: Sampler MSAA Qpitch will be 4 greater than
* the value calculated in the equation above , for every
* other odd Surface Height starting from 1 i.e. 1,5,9,13.
*
* XXX(chadv): Is the errata natural corollary of the physical
* layout of interleaved samples?
*/
pitch_sa_rows += 4;
}
pitch_sa_rows = isl_align_npot(pitch_sa_rows, fmtl->bh);
} /* end case */
break;
}
assert(pitch_sa_rows % fmtl->bh == 0);
uint32_t pitch_el_rows = pitch_sa_rows / fmtl->bh;
if (ISL_DEV_GEN(dev) >= 9 && fmtl->txc == ISL_TXC_CCS) {
/*
* From the Sky Lake PRM Vol 7, "MCS Buffer for Render Target(s)" (p. 632):
*
* "Mip-mapped and arrayed surfaces are supported with MCS buffer
* layout with these alignments in the RT space: Horizontal
* Alignment = 128 and Vertical Alignment = 64."
*
* From the Sky Lake PRM Vol. 2d, "RENDER_SURFACE_STATE" (p. 435):
*
* "For non-multisampled render target's CCS auxiliary surface,
* QPitch must be computed with Horizontal Alignment = 128 and
* Surface Vertical Alignment = 256. These alignments are only for
* CCS buffer and not for associated render target."
*
* The first restriction is already handled by isl_choose_image_alignment_el
* but the second restriction, which is an extension of the first, only
* applies to qpitch and must be applied here.
*/
assert(fmtl->bh == 4);
pitch_el_rows = isl_align(pitch_el_rows, 256 / 4);
}
if (ISL_DEV_GEN(dev) >= 9 &&
info->dim == ISL_SURF_DIM_3D &&
tile_info->tiling != ISL_TILING_LINEAR) {
/* From the Skylake BSpec >> RENDER_SURFACE_STATE >> Surface QPitch:
*
* Tile Mode != Linear: This field must be set to an integer multiple
* of the tile height
*/
pitch_el_rows = isl_align(pitch_el_rows, tile_info->logical_extent_el.height);
}
return pitch_el_rows;
}
/**
* A variant of isl_calc_phys_slice0_extent_sa() specific to
* ISL_DIM_LAYOUT_GEN4_2D.
*/
static void
isl_calc_phys_slice0_extent_sa_gen4_2d(
const struct isl_device *dev,
const struct isl_surf_init_info *restrict info,
enum isl_msaa_layout msaa_layout,
const struct isl_extent3d *image_align_sa,
const struct isl_extent4d *phys_level0_sa,
struct isl_extent2d *phys_slice0_sa)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(info->format);
assert(phys_level0_sa->depth == 1);
if (info->levels == 1) {
/* Do not pad the surface to the image alignment. Instead, pad it only
* to the pixel format's block alignment.
*
* For tiled surfaces, using a reduced alignment here avoids wasting CPU
* cycles on the below mipmap layout caluclations. Reducing the
* alignment here is safe because we later align the row pitch and array
* pitch to the tile boundary. It is safe even for
* ISL_MSAA_LAYOUT_INTERLEAVED, because phys_level0_sa is already scaled
* to accomodate the interleaved samples.
*
* For linear surfaces, reducing the alignment here permits us to later
* choose an arbitrary, non-aligned row pitch. If the surface backs
* a VkBuffer, then an arbitrary pitch may be needed to accomodate
* VkBufferImageCopy::bufferRowLength.
*/
*phys_slice0_sa = (struct isl_extent2d) {
.w = isl_align_npot(phys_level0_sa->w, fmtl->bw),
.h = isl_align_npot(phys_level0_sa->h, fmtl->bh),
};
return;
}
uint32_t slice_top_w = 0;
uint32_t slice_bottom_w = 0;
uint32_t slice_left_h = 0;
uint32_t slice_right_h = 0;
uint32_t W0 = phys_level0_sa->w;
uint32_t H0 = phys_level0_sa->h;
for (uint32_t l = 0; l < info->levels; ++l) {
uint32_t W = isl_minify(W0, l);
uint32_t H = isl_minify(H0, l);
uint32_t w = isl_align_npot(W, image_align_sa->w);
uint32_t h = isl_align_npot(H, image_align_sa->h);
if (l == 0) {
slice_top_w = w;
slice_left_h = h;
slice_right_h = h;
} else if (l == 1) {
slice_bottom_w = w;
slice_left_h += h;
} else if (l == 2) {
slice_bottom_w += w;
slice_right_h += h;
} else {
slice_right_h += h;
}
}
*phys_slice0_sa = (struct isl_extent2d) {
.w = MAX(slice_top_w, slice_bottom_w),
.h = MAX(slice_left_h, slice_right_h),
};
}
static void
isl_calc_phys_total_extent_el_gen4_2d(
const struct isl_device *dev,
const struct isl_surf_init_info *restrict info,
const struct isl_tile_info *tile_info,
enum isl_msaa_layout msaa_layout,
const struct isl_extent3d *image_align_sa,
const struct isl_extent4d *phys_level0_sa,
enum isl_array_pitch_span array_pitch_span,
uint32_t *array_pitch_el_rows,
struct isl_extent2d *total_extent_el)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(info->format);
struct isl_extent2d phys_slice0_sa;
isl_calc_phys_slice0_extent_sa_gen4_2d(dev, info, msaa_layout,
image_align_sa, phys_level0_sa,
&phys_slice0_sa);
*array_pitch_el_rows =
isl_calc_array_pitch_el_rows_gen4_2d(dev, info, tile_info,
image_align_sa, phys_level0_sa,
array_pitch_span,
&phys_slice0_sa);
*total_extent_el = (struct isl_extent2d) {
.w = isl_assert_div(phys_slice0_sa.w, fmtl->bw),
.h = *array_pitch_el_rows * (phys_level0_sa->array_len - 1) +
isl_assert_div(phys_slice0_sa.h, fmtl->bh),
};
}
/**
* A variant of isl_calc_phys_slice0_extent_sa() specific to
* ISL_DIM_LAYOUT_GEN4_3D.
*/
static void
isl_calc_phys_total_extent_el_gen4_3d(
const struct isl_device *dev,
const struct isl_surf_init_info *restrict info,
const struct isl_extent3d *image_align_sa,
const struct isl_extent4d *phys_level0_sa,
uint32_t *array_pitch_el_rows,
struct isl_extent2d *phys_total_el)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(info->format);
assert(info->samples == 1);
if (info->dim != ISL_SURF_DIM_3D) {
/* From the G45 PRM Vol. 1a, "6.17.4.1 Hardware Cube Map Layout":
*
* The cube face textures are stored in the same way as 3D surfaces
* are stored (see section 6.17.5 for details). For cube surfaces,
* however, the depth is equal to the number of faces (always 6) and
* is not reduced for each MIP.
*/
assert(ISL_DEV_GEN(dev) == 4);
assert(info->usage & ISL_SURF_USAGE_CUBE_BIT);
assert(phys_level0_sa->array_len == 6);
} else {
assert(phys_level0_sa->array_len == 1);
}
uint32_t total_w = 0;
uint32_t total_h = 0;
uint32_t W0 = phys_level0_sa->w;
uint32_t H0 = phys_level0_sa->h;
uint32_t D0 = phys_level0_sa->d;
uint32_t A0 = phys_level0_sa->a;
for (uint32_t l = 0; l < info->levels; ++l) {
uint32_t level_w = isl_align_npot(isl_minify(W0, l), image_align_sa->w);
uint32_t level_h = isl_align_npot(isl_minify(H0, l), image_align_sa->h);
uint32_t level_d = info->dim == ISL_SURF_DIM_3D ? isl_minify(D0, l) : A0;
uint32_t max_layers_horiz = MIN(level_d, 1u << l);
uint32_t max_layers_vert = isl_align(level_d, 1u << l) / (1u << l);
total_w = MAX(total_w, level_w * max_layers_horiz);
total_h += level_h * max_layers_vert;
}
/* GEN4_3D layouts don't really have an array pitch since each LOD has a
* different number of horizontal and vertical layers. We have to set it
* to something, so at least make it true for LOD0.
*/
*array_pitch_el_rows =
isl_align_npot(phys_level0_sa->h, image_align_sa->h) / fmtl->bw;
*phys_total_el = (struct isl_extent2d) {
.w = isl_assert_div(total_w, fmtl->bw),
.h = isl_assert_div(total_h, fmtl->bh),
};
}
/**
* A variant of isl_calc_phys_slice0_extent_sa() specific to
* ISL_DIM_LAYOUT_GEN6_STENCIL_HIZ.
*/
static void
isl_calc_phys_total_extent_el_gen6_stencil_hiz(
const struct isl_device *dev,
const struct isl_surf_init_info *restrict info,
const struct isl_tile_info *tile_info,
const struct isl_extent3d *image_align_sa,
const struct isl_extent4d *phys_level0_sa,
uint32_t *array_pitch_el_rows,
struct isl_extent2d *phys_total_el)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(info->format);
const struct isl_extent2d tile_extent_sa = {
.w = tile_info->logical_extent_el.w * fmtl->bw,
.h = tile_info->logical_extent_el.h * fmtl->bh,
};
/* Tile size is a multiple of image alignment */
assert(tile_extent_sa.w % image_align_sa->w == 0);
assert(tile_extent_sa.h % image_align_sa->h == 0);
const uint32_t W0 = phys_level0_sa->w;
const uint32_t H0 = phys_level0_sa->h;
/* Each image has the same height as LOD0 because the hardware thinks
* everything is LOD0
*/
const uint32_t H = isl_align(H0, image_align_sa->h) * phys_level0_sa->a;
uint32_t total_top_w = 0;
uint32_t total_bottom_w = 0;
uint32_t total_h = 0;
for (uint32_t l = 0; l < info->levels; ++l) {
const uint32_t W = isl_minify(W0, l);
const uint32_t w = isl_align(W, tile_extent_sa.w);
const uint32_t h = isl_align(H, tile_extent_sa.h);
if (l == 0) {
total_top_w = w;
total_h = h;
} else if (l == 1) {
total_bottom_w = w;
total_h += h;
} else {
total_bottom_w += w;
}
}
*array_pitch_el_rows =
isl_assert_div(isl_align(H0, image_align_sa->h), fmtl->bh);
*phys_total_el = (struct isl_extent2d) {
.w = isl_assert_div(MAX(total_top_w, total_bottom_w), fmtl->bw),
.h = isl_assert_div(total_h, fmtl->bh),
};
}
/**
* A variant of isl_calc_phys_slice0_extent_sa() specific to
* ISL_DIM_LAYOUT_GEN9_1D.
*/
static void
isl_calc_phys_total_extent_el_gen9_1d(
const struct isl_device *dev,
const struct isl_surf_init_info *restrict info,
const struct isl_extent3d *image_align_sa,
const struct isl_extent4d *phys_level0_sa,
uint32_t *array_pitch_el_rows,
struct isl_extent2d *phys_total_el)
{
MAYBE_UNUSED const struct isl_format_layout *fmtl = isl_format_get_layout(info->format);
assert(phys_level0_sa->height / fmtl->bh == 1);
assert(phys_level0_sa->depth == 1);
assert(info->samples == 1);
assert(image_align_sa->w >= fmtl->bw);
uint32_t slice_w = 0;
const uint32_t W0 = phys_level0_sa->w;
for (uint32_t l = 0; l < info->levels; ++l) {
uint32_t W = isl_minify(W0, l);
uint32_t w = isl_align_npot(W, image_align_sa->w);
slice_w += w;
}
*array_pitch_el_rows = 1;
*phys_total_el = (struct isl_extent2d) {
.w = isl_assert_div(slice_w, fmtl->bw),
.h = phys_level0_sa->array_len,
};
}
/**
* Calculate the two-dimensional total physical extent of the surface, in
* units of surface elements.
*/
static void
isl_calc_phys_total_extent_el(const struct isl_device *dev,
const struct isl_surf_init_info *restrict info,
const struct isl_tile_info *tile_info,
enum isl_dim_layout dim_layout,
enum isl_msaa_layout msaa_layout,
const struct isl_extent3d *image_align_sa,
const struct isl_extent4d *phys_level0_sa,
enum isl_array_pitch_span array_pitch_span,
uint32_t *array_pitch_el_rows,
struct isl_extent2d *total_extent_el)
{
switch (dim_layout) {
case ISL_DIM_LAYOUT_GEN9_1D:
assert(array_pitch_span == ISL_ARRAY_PITCH_SPAN_COMPACT);
isl_calc_phys_total_extent_el_gen9_1d(dev, info,
image_align_sa, phys_level0_sa,
array_pitch_el_rows,
total_extent_el);
return;
case ISL_DIM_LAYOUT_GEN4_2D:
isl_calc_phys_total_extent_el_gen4_2d(dev, info, tile_info, msaa_layout,
image_align_sa, phys_level0_sa,
array_pitch_span,
array_pitch_el_rows,
total_extent_el);
return;
case ISL_DIM_LAYOUT_GEN6_STENCIL_HIZ:
assert(array_pitch_span == ISL_ARRAY_PITCH_SPAN_COMPACT);
isl_calc_phys_total_extent_el_gen6_stencil_hiz(dev, info, tile_info,
image_align_sa,
phys_level0_sa,
array_pitch_el_rows,
total_extent_el);
return;
case ISL_DIM_LAYOUT_GEN4_3D:
assert(array_pitch_span == ISL_ARRAY_PITCH_SPAN_COMPACT);
isl_calc_phys_total_extent_el_gen4_3d(dev, info,
image_align_sa, phys_level0_sa,
array_pitch_el_rows,
total_extent_el);
return;
}
}
static uint32_t
isl_calc_row_pitch_alignment(const struct isl_surf_init_info *surf_info,
const struct isl_tile_info *tile_info)
{
if (tile_info->tiling != ISL_TILING_LINEAR)
return tile_info->phys_extent_B.width;
/* From the Broadwel PRM >> Volume 2d: Command Reference: Structures >>
* RENDER_SURFACE_STATE Surface Pitch (p349):
*
* - For linear render target surfaces and surfaces accessed with the
* typed data port messages, the pitch must be a multiple of the
* element size for non-YUV surface formats. Pitch must be
* a multiple of 2 * element size for YUV surface formats.
*
* - [Requirements for SURFTYPE_BUFFER and SURFTYPE_STRBUF, which we
* ignore because isl doesn't do buffers.]
*
* - For other linear surfaces, the pitch can be any multiple of
* bytes.
*/
const struct isl_format_layout *fmtl = isl_format_get_layout(surf_info->format);
const uint32_t bs = fmtl->bpb / 8;
if (surf_info->usage & ISL_SURF_USAGE_RENDER_TARGET_BIT) {
if (isl_format_is_yuv(surf_info->format)) {
return 2 * bs;
} else {
return bs;
}
}
return 1;
}
static uint32_t
isl_calc_linear_min_row_pitch(const struct isl_device *dev,
const struct isl_surf_init_info *info,
const struct isl_extent2d *phys_total_el,
uint32_t alignment_B)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(info->format);
const uint32_t bs = fmtl->bpb / 8;
return isl_align_npot(bs * phys_total_el->w, alignment_B);
}
static uint32_t
isl_calc_tiled_min_row_pitch(const struct isl_device *dev,
const struct isl_surf_init_info *surf_info,
const struct isl_tile_info *tile_info,
const struct isl_extent2d *phys_total_el,
uint32_t alignment_B)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(surf_info->format);
assert(fmtl->bpb % tile_info->format_bpb == 0);
const uint32_t tile_el_scale = fmtl->bpb / tile_info->format_bpb;
const uint32_t total_w_tl =
isl_align_div(phys_total_el->w * tile_el_scale,
tile_info->logical_extent_el.width);
assert(alignment_B == tile_info->phys_extent_B.width);
return total_w_tl * tile_info->phys_extent_B.width;
}
static uint32_t
isl_calc_min_row_pitch(const struct isl_device *dev,
const struct isl_surf_init_info *surf_info,
const struct isl_tile_info *tile_info,
const struct isl_extent2d *phys_total_el,
uint32_t alignment_B)
{
if (tile_info->tiling == ISL_TILING_LINEAR) {
return isl_calc_linear_min_row_pitch(dev, surf_info, phys_total_el,
alignment_B);
} else {
return isl_calc_tiled_min_row_pitch(dev, surf_info, tile_info,
phys_total_el, alignment_B);
}
}
/**
* Is `pitch` in the valid range for a hardware bitfield, if the bitfield's
* size is `bits` bits?
*
* Hardware pitch fields are offset by 1. For example, if the size of
* RENDER_SURFACE_STATE::SurfacePitch is B bits, then the range of valid
* pitches is [1, 2^b] inclusive. If the surface pitch is N, then
* RENDER_SURFACE_STATE::SurfacePitch must be set to N-1.
*/
static bool
pitch_in_range(uint32_t n, uint32_t bits)
{
assert(n != 0);
return likely(bits != 0 && 1 <= n && n <= (1 << bits));
}
static bool
isl_calc_row_pitch(const struct isl_device *dev,
const struct isl_surf_init_info *surf_info,
const struct isl_tile_info *tile_info,
enum isl_dim_layout dim_layout,
const struct isl_extent2d *phys_total_el,
uint32_t *out_row_pitch_B)
{
uint32_t alignment_B =
isl_calc_row_pitch_alignment(surf_info, tile_info);
/* If pitch isn't given and it can be chosen freely, align it by cache line
* allowing one to use blit engine on the surface.
*/
if (surf_info->row_pitch_B == 0 && tile_info->tiling == ISL_TILING_LINEAR) {
/* From the Broadwell PRM docs for XY_SRC_COPY_BLT::SourceBaseAddress:
*
* "Base address of the destination surface: X=0, Y=0. Lower 32bits
* of the 48bit addressing. When Src Tiling is enabled (Bit_15
* enabled), this address must be 4KB-aligned. When Tiling is not
* enabled, this address should be CL (64byte) aligned."
*/
alignment_B = MAX2(alignment_B, 64);
}
const uint32_t min_row_pitch_B =
isl_calc_min_row_pitch(dev, surf_info, tile_info, phys_total_el,
alignment_B);
uint32_t row_pitch_B = min_row_pitch_B;
if (surf_info->row_pitch_B != 0) {
row_pitch_B = surf_info->row_pitch_B;
if (row_pitch_B < min_row_pitch_B)
return false;
if (row_pitch_B % alignment_B != 0)
return false;
}
const uint32_t row_pitch_tl = row_pitch_B / tile_info->phys_extent_B.width;
if (row_pitch_B == 0)
return false;
if (dim_layout == ISL_DIM_LAYOUT_GEN9_1D) {
/* SurfacePitch is ignored for this layout. */
goto done;
}
if ((surf_info->usage & (ISL_SURF_USAGE_RENDER_TARGET_BIT |
ISL_SURF_USAGE_TEXTURE_BIT |
ISL_SURF_USAGE_STORAGE_BIT)) &&
!pitch_in_range(row_pitch_B, RENDER_SURFACE_STATE_SurfacePitch_bits(dev->info)))
return false;
if ((surf_info->usage & (ISL_SURF_USAGE_CCS_BIT |
ISL_SURF_USAGE_MCS_BIT)) &&
!pitch_in_range(row_pitch_tl, RENDER_SURFACE_STATE_AuxiliarySurfacePitch_bits(dev->info)))
return false;
if ((surf_info->usage & ISL_SURF_USAGE_DEPTH_BIT) &&
!pitch_in_range(row_pitch_B, _3DSTATE_DEPTH_BUFFER_SurfacePitch_bits(dev->info)))
return false;
if ((surf_info->usage & ISL_SURF_USAGE_HIZ_BIT) &&
!pitch_in_range(row_pitch_B, _3DSTATE_HIER_DEPTH_BUFFER_SurfacePitch_bits(dev->info)))
return false;
const uint32_t stencil_pitch_bits = dev->use_separate_stencil ?
_3DSTATE_STENCIL_BUFFER_SurfacePitch_bits(dev->info) :
_3DSTATE_DEPTH_BUFFER_SurfacePitch_bits(dev->info);
if ((surf_info->usage & ISL_SURF_USAGE_STENCIL_BIT) &&
!pitch_in_range(row_pitch_B, stencil_pitch_bits))
return false;
done:
*out_row_pitch_B = row_pitch_B;
return true;
}
bool
isl_surf_init_s(const struct isl_device *dev,
struct isl_surf *surf,
const struct isl_surf_init_info *restrict info)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(info->format);
const struct isl_extent4d logical_level0_px = {
.w = info->width,
.h = info->height,
.d = info->depth,
.a = info->array_len,
};
enum isl_tiling tiling;
if (!isl_surf_choose_tiling(dev, info, &tiling))
return false;
struct isl_tile_info tile_info;
isl_tiling_get_info(tiling, fmtl->bpb, &tile_info);
const enum isl_dim_layout dim_layout =
isl_surf_choose_dim_layout(dev, info->dim, tiling, info->usage);
enum isl_msaa_layout msaa_layout;
if (!isl_choose_msaa_layout(dev, info, tiling, &msaa_layout))
return false;
struct isl_extent3d image_align_el;
isl_choose_image_alignment_el(dev, info, tiling, dim_layout, msaa_layout,
&image_align_el);
struct isl_extent3d image_align_sa =
isl_extent3d_el_to_sa(info->format, image_align_el);
struct isl_extent4d phys_level0_sa;
isl_calc_phys_level0_extent_sa(dev, info, dim_layout, tiling, msaa_layout,
&phys_level0_sa);
assert(phys_level0_sa.w % fmtl->bw == 0);
assert(phys_level0_sa.h % fmtl->bh == 0);
enum isl_array_pitch_span array_pitch_span =
isl_choose_array_pitch_span(dev, info, dim_layout, &phys_level0_sa);
uint32_t array_pitch_el_rows;
struct isl_extent2d phys_total_el;
isl_calc_phys_total_extent_el(dev, info, &tile_info,
dim_layout, msaa_layout,
&image_align_sa, &phys_level0_sa,
array_pitch_span, &array_pitch_el_rows,
&phys_total_el);
uint32_t row_pitch_B;
if (!isl_calc_row_pitch(dev, info, &tile_info, dim_layout,
&phys_total_el, &row_pitch_B))
return false;
uint32_t base_alignment_B;
uint64_t size_B;
if (tiling == ISL_TILING_LINEAR) {
size_B = (uint64_t) row_pitch_B * phys_total_el.h;
/* From the Broadwell PRM Vol 2d, RENDER_SURFACE_STATE::SurfaceBaseAddress:
*
* "The Base Address for linear render target surfaces and surfaces
* accessed with the typed surface read/write data port messages must
* be element-size aligned, for non-YUV surface formats, or a
* multiple of 2 element-sizes for YUV surface formats. Other linear
* surfaces have no alignment requirements (byte alignment is
* sufficient.)"
*/
base_alignment_B = MAX(1, info->min_alignment_B);
if (info->usage & ISL_SURF_USAGE_RENDER_TARGET_BIT) {
if (isl_format_is_yuv(info->format)) {
base_alignment_B = MAX(base_alignment_B, fmtl->bpb / 4);
} else {
base_alignment_B = MAX(base_alignment_B, fmtl->bpb / 8);
}
}
base_alignment_B = isl_round_up_to_power_of_two(base_alignment_B);
} else {
const uint32_t total_h_tl =
isl_align_div(phys_total_el.h, tile_info.logical_extent_el.height);
size_B = (uint64_t) total_h_tl * tile_info.phys_extent_B.height * row_pitch_B;
const uint32_t tile_size_B = tile_info.phys_extent_B.width *
tile_info.phys_extent_B.height;
assert(isl_is_pow2(info->min_alignment_B) && isl_is_pow2(tile_size_B));
base_alignment_B = MAX(info->min_alignment_B, tile_size_B);
}
if (ISL_DEV_GEN(dev) < 9) {
/* From the Broadwell PRM Vol 5, Surface Layout:
*
* "In addition to restrictions on maximum height, width, and depth,
* surfaces are also restricted to a maximum size in bytes. This
* maximum is 2 GB for all products and all surface types."
*
* This comment is applicable to all Pre-gen9 platforms.
*/
if (size_B > (uint64_t) 1 << 31)
return false;
} else if (ISL_DEV_GEN(dev) < 11) {
/* From the Skylake PRM Vol 5, Maximum Surface Size in Bytes:
* "In addition to restrictions on maximum height, width, and depth,
* surfaces are also restricted to a maximum size of 2^38 bytes.
* All pixels within the surface must be contained within 2^38 bytes
* of the base address."
*/
if (size_B > (uint64_t) 1 << 38)
return false;
} else {
/* gen11+ platforms raised this limit to 2^44 bytes. */
if (size_B > (uint64_t) 1 << 44)
return false;
}
*surf = (struct isl_surf) {
.dim = info->dim,
.dim_layout = dim_layout,
.msaa_layout = msaa_layout,
.tiling = tiling,
.format = info->format,
.levels = info->levels,
.samples = info->samples,
.image_alignment_el = image_align_el,
.logical_level0_px = logical_level0_px,
.phys_level0_sa = phys_level0_sa,
.size_B = size_B,
.alignment_B = base_alignment_B,
.row_pitch_B = row_pitch_B,
.array_pitch_el_rows = array_pitch_el_rows,
.array_pitch_span = array_pitch_span,
.usage = info->usage,
};
return true;
}
void
isl_surf_get_tile_info(const struct isl_surf *surf,
struct isl_tile_info *tile_info)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(surf->format);
isl_tiling_get_info(surf->tiling, fmtl->bpb, tile_info);
}
bool
isl_surf_get_hiz_surf(const struct isl_device *dev,
const struct isl_surf *surf,
struct isl_surf *hiz_surf)
{
assert(ISL_DEV_GEN(dev) >= 5 && ISL_DEV_USE_SEPARATE_STENCIL(dev));
/* Multisampled depth is always interleaved */
assert(surf->msaa_layout == ISL_MSAA_LAYOUT_NONE ||
surf->msaa_layout == ISL_MSAA_LAYOUT_INTERLEAVED);
/* From the Broadwell PRM Vol. 7, "Hierarchical Depth Buffer":
*
* "The Surface Type, Height, Width, Depth, Minimum Array Element, Render
* Target View Extent, and Depth Coordinate Offset X/Y of the
* hierarchical depth buffer are inherited from the depth buffer. The
* height and width of the hierarchical depth buffer that must be
* allocated are computed by the following formulas, where HZ is the
* hierarchical depth buffer and Z is the depth buffer. The Z_Height,
* Z_Width, and Z_Depth values given in these formulas are those present
* in 3DSTATE_DEPTH_BUFFER incremented by one.
*
* "The value of Z_Height and Z_Width must each be multiplied by 2 before
* being applied to the table below if Number of Multisamples is set to
* NUMSAMPLES_4. The value of Z_Height must be multiplied by 2 and
* Z_Width must be multiplied by 4 before being applied to the table
* below if Number of Multisamples is set to NUMSAMPLES_8."
*
* In the Sky Lake PRM, the second paragraph is replaced with this:
*
* "The Z_Height and Z_Width values must equal those present in
* 3DSTATE_DEPTH_BUFFER incremented by one."
*
* In other words, on Sandy Bridge through Broadwell, each 128-bit HiZ
* block corresponds to a region of 8x4 samples in the primary depth
* surface. On Sky Lake, on the other hand, each HiZ block corresponds to
* a region of 8x4 pixels in the primary depth surface regardless of the
* number of samples. The dimensions of a HiZ block in both pixels and
* samples are given in the table below:
*
* | SNB - BDW | SKL+
* ------+-----------+-------------
* 1x | 8 x 4 sa | 8 x 4 sa
* MSAA | 8 x 4 px | 8 x 4 px
* ------+-----------+-------------
* 2x | 8 x 4 sa | 16 x 4 sa
* MSAA | 4 x 4 px | 8 x 4 px
* ------+-----------+-------------
* 4x | 8 x 4 sa | 16 x 8 sa
* MSAA | 4 x 2 px | 8 x 4 px
* ------+-----------+-------------
* 8x | 8 x 4 sa | 32 x 8 sa
* MSAA | 2 x 2 px | 8 x 4 px
* ------+-----------+-------------
* 16x | N/A | 32 x 16 sa
* MSAA | N/A | 8 x 4 px
* ------+-----------+-------------
*
* There are a number of different ways that this discrepency could be
* handled. The way we have chosen is to simply make MSAA HiZ have the
* same number of samples as the parent surface pre-Sky Lake and always be
* single-sampled on Sky Lake and above. Since the block sizes of
* compressed formats are given in samples, this neatly handles everything
* without the need for additional HiZ formats with different block sizes
* on SKL+.
*/
const unsigned samples = ISL_DEV_GEN(dev) >= 9 ? 1 : surf->samples;
return isl_surf_init(dev, hiz_surf,
.dim = surf->dim,
.format = ISL_FORMAT_HIZ,
.width = surf->logical_level0_px.width,
.height = surf->logical_level0_px.height,
.depth = surf->logical_level0_px.depth,
.levels = surf->levels,
.array_len = surf->logical_level0_px.array_len,
.samples = samples,
.usage = ISL_SURF_USAGE_HIZ_BIT,
.tiling_flags = ISL_TILING_HIZ_BIT);
}
bool
isl_surf_get_mcs_surf(const struct isl_device *dev,
const struct isl_surf *surf,
struct isl_surf *mcs_surf)
{
assert(ISL_DEV_GEN(dev) >= 7);
/* It must be multisampled with an array layout */
assert(surf->samples > 1 && surf->msaa_layout == ISL_MSAA_LAYOUT_ARRAY);
/* The following are true of all multisampled surfaces */
assert(surf->dim == ISL_SURF_DIM_2D);
assert(surf->levels == 1);
assert(surf->logical_level0_px.depth == 1);
/* The "Auxiliary Surface Pitch" field in RENDER_SURFACE_STATE is only 9
* bits which means the maximum pitch of a compression surface is 512
* tiles or 64KB (since MCS is always Y-tiled). Since a 16x MCS buffer is
* 64bpp, this gives us a maximum width of 8192 pixels. We can create
* larger multisampled surfaces, we just can't compress them. For 2x, 4x,
* and 8x, we have enough room for the full 16k supported by the hardware.
*/
if (surf->samples == 16 && surf->logical_level0_px.width > 8192)
return false;
enum isl_format mcs_format;
switch (surf->samples) {
case 2: mcs_format = ISL_FORMAT_MCS_2X; break;
case 4: mcs_format = ISL_FORMAT_MCS_4X; break;
case 8: mcs_format = ISL_FORMAT_MCS_8X; break;
case 16: mcs_format = ISL_FORMAT_MCS_16X; break;
default:
unreachable("Invalid sample count");
}
return isl_surf_init(dev, mcs_surf,
.dim = ISL_SURF_DIM_2D,
.format = mcs_format,
.width = surf->logical_level0_px.width,
.height = surf->logical_level0_px.height,
.depth = 1,
.levels = 1,
.array_len = surf->logical_level0_px.array_len,
.samples = 1, /* MCS surfaces are really single-sampled */
.usage = ISL_SURF_USAGE_MCS_BIT,
.tiling_flags = ISL_TILING_Y0_BIT);
}
bool
isl_surf_get_ccs_surf(const struct isl_device *dev,
const struct isl_surf *surf,
struct isl_surf *ccs_surf,
uint32_t row_pitch_B)
{
assert(surf->samples == 1 && surf->msaa_layout == ISL_MSAA_LAYOUT_NONE);
assert(ISL_DEV_GEN(dev) >= 7);
if (surf->usage & ISL_SURF_USAGE_DISABLE_AUX_BIT)
return false;
/* The PRM doesn't say this explicitly, but fast-clears don't appear to
* work for 3D textures until gen9 where the layout of 3D textures changes
* to match 2D array textures.
*/
if (ISL_DEV_GEN(dev) <= 8 && surf->dim != ISL_SURF_DIM_2D)
return false;
/* From the HSW PRM Volume 7: 3D-Media-GPGPU, page 652 (Color Clear of
* Non-MultiSampler Render Target Restrictions):
*
* "Support is for non-mip-mapped and non-array surface types only."
*
* This restriction is lifted on gen8+. Technically, it may be possible to
* create a CCS for an arrayed or mipmapped image and only enable CCS_D
* when rendering to the base slice. However, there is no documentation
* tell us what the hardware would do in that case or what it does if you
* walk off the bases slice. (Does it ignore CCS or does it start
* scribbling over random memory?) We play it safe and just follow the
* docs and don't allow CCS_D for arrayed or mip-mapped surfaces.
*/
if (ISL_DEV_GEN(dev) <= 7 &&
(surf->levels > 1 || surf->logical_level0_px.array_len > 1))
return false;
if (isl_format_is_compressed(surf->format))
return false;
/* TODO: More conditions where it can fail. */
enum isl_format ccs_format;
if (ISL_DEV_GEN(dev) >= 9) {
if (!isl_tiling_is_any_y(surf->tiling))
return false;
switch (isl_format_get_layout(surf->format)->bpb) {
case 32: ccs_format = ISL_FORMAT_GEN9_CCS_32BPP; break;
case 64: ccs_format = ISL_FORMAT_GEN9_CCS_64BPP; break;
case 128: ccs_format = ISL_FORMAT_GEN9_CCS_128BPP; break;
default:
return false;
}
} else if (surf->tiling == ISL_TILING_Y0) {
switch (isl_format_get_layout(surf->format)->bpb) {
case 32: ccs_format = ISL_FORMAT_GEN7_CCS_32BPP_Y; break;
case 64: ccs_format = ISL_FORMAT_GEN7_CCS_64BPP_Y; break;
case 128: ccs_format = ISL_FORMAT_GEN7_CCS_128BPP_Y; break;
default:
return false;
}
} else if (surf->tiling == ISL_TILING_X) {
switch (isl_format_get_layout(surf->format)->bpb) {
case 32: ccs_format = ISL_FORMAT_GEN7_CCS_32BPP_X; break;
case 64: ccs_format = ISL_FORMAT_GEN7_CCS_64BPP_X; break;
case 128: ccs_format = ISL_FORMAT_GEN7_CCS_128BPP_X; break;
default:
return false;
}
} else {
return false;
}
return isl_surf_init(dev, ccs_surf,
.dim = surf->dim,
.format = ccs_format,
.width = surf->logical_level0_px.width,
.height = surf->logical_level0_px.height,
.depth = surf->logical_level0_px.depth,
.levels = surf->levels,
.array_len = surf->logical_level0_px.array_len,
.samples = 1,
.row_pitch_B = row_pitch_B,
.usage = ISL_SURF_USAGE_CCS_BIT,
.tiling_flags = ISL_TILING_CCS_BIT);
}
#define isl_genX_call(dev, func, ...) \
switch (ISL_DEV_GEN(dev)) { \
case 4: \
/* G45 surface state is the same as gen5 */ \
if (ISL_DEV_IS_G4X(dev)) { \
isl_gen5_##func(__VA_ARGS__); \
} else { \
isl_gen4_##func(__VA_ARGS__); \
} \
break; \
case 5: \
isl_gen5_##func(__VA_ARGS__); \
break; \
case 6: \
isl_gen6_##func(__VA_ARGS__); \
break; \
case 7: \
if (ISL_DEV_IS_HASWELL(dev)) { \
isl_gen75_##func(__VA_ARGS__); \
} else { \
isl_gen7_##func(__VA_ARGS__); \
} \
break; \
case 8: \
isl_gen8_##func(__VA_ARGS__); \
break; \
case 9: \
isl_gen9_##func(__VA_ARGS__); \
break; \
case 10: \
isl_gen10_##func(__VA_ARGS__); \
break; \
case 11: \
isl_gen11_##func(__VA_ARGS__); \
break; \
default: \
assert(!"Unknown hardware generation"); \
}
void
isl_surf_fill_state_s(const struct isl_device *dev, void *state,
const struct isl_surf_fill_state_info *restrict info)
{
#ifndef NDEBUG
isl_surf_usage_flags_t _base_usage =
info->view->usage & (ISL_SURF_USAGE_RENDER_TARGET_BIT |
ISL_SURF_USAGE_TEXTURE_BIT |
ISL_SURF_USAGE_STORAGE_BIT);
/* They may only specify one of the above bits at a time */
assert(__builtin_popcount(_base_usage) == 1);
/* The only other allowed bit is ISL_SURF_USAGE_CUBE_BIT */
assert((info->view->usage & ~ISL_SURF_USAGE_CUBE_BIT) == _base_usage);
#endif
if (info->surf->dim == ISL_SURF_DIM_3D) {
assert(info->view->base_array_layer + info->view->array_len <=
info->surf->logical_level0_px.depth);
} else {
assert(info->view->base_array_layer + info->view->array_len <=
info->surf->logical_level0_px.array_len);
}
isl_genX_call(dev, surf_fill_state_s, dev, state, info);
}
void
isl_buffer_fill_state_s(const struct isl_device *dev, void *state,
const struct isl_buffer_fill_state_info *restrict info)
{
isl_genX_call(dev, buffer_fill_state_s, state, info);
}
void
isl_null_fill_state(const struct isl_device *dev, void *state,
struct isl_extent3d size)
{
isl_genX_call(dev, null_fill_state, state, size);
}
void
isl_emit_depth_stencil_hiz_s(const struct isl_device *dev, void *batch,
const struct isl_depth_stencil_hiz_emit_info *restrict info)
{
if (info->depth_surf && info->stencil_surf) {
if (!dev->info->has_hiz_and_separate_stencil) {
assert(info->depth_surf == info->stencil_surf);
assert(info->depth_address == info->stencil_address);
}
assert(info->depth_surf->dim == info->stencil_surf->dim);
}
if (info->depth_surf) {
assert((info->depth_surf->usage & ISL_SURF_USAGE_DEPTH_BIT));
if (info->depth_surf->dim == ISL_SURF_DIM_3D) {
assert(info->view->base_array_layer + info->view->array_len <=
info->depth_surf->logical_level0_px.depth);
} else {
assert(info->view->base_array_layer + info->view->array_len <=
info->depth_surf->logical_level0_px.array_len);
}
}
if (info->stencil_surf) {
assert((info->stencil_surf->usage & ISL_SURF_USAGE_STENCIL_BIT));
if (info->stencil_surf->dim == ISL_SURF_DIM_3D) {
assert(info->view->base_array_layer + info->view->array_len <=
info->stencil_surf->logical_level0_px.depth);
} else {
assert(info->view->base_array_layer + info->view->array_len <=
info->stencil_surf->logical_level0_px.array_len);
}
}
isl_genX_call(dev, emit_depth_stencil_hiz_s, dev, batch, info);
}
/**
* A variant of isl_surf_get_image_offset_sa() specific to
* ISL_DIM_LAYOUT_GEN4_2D.
*/
static void
get_image_offset_sa_gen4_2d(const struct isl_surf *surf,
uint32_t level, uint32_t logical_array_layer,
uint32_t *x_offset_sa,
uint32_t *y_offset_sa)
{
assert(level < surf->levels);
if (surf->dim == ISL_SURF_DIM_3D)
assert(logical_array_layer < surf->logical_level0_px.depth);
else
assert(logical_array_layer < surf->logical_level0_px.array_len);
const struct isl_extent3d image_align_sa =
isl_surf_get_image_alignment_sa(surf);
const uint32_t W0 = surf->phys_level0_sa.width;
const uint32_t H0 = surf->phys_level0_sa.height;
const uint32_t phys_layer = logical_array_layer *
(surf->msaa_layout == ISL_MSAA_LAYOUT_ARRAY ? surf->samples : 1);
uint32_t x = 0;
uint32_t y = phys_layer * isl_surf_get_array_pitch_sa_rows(surf);
for (uint32_t l = 0; l < level; ++l) {
if (l == 1) {
uint32_t W = isl_minify(W0, l);
x += isl_align_npot(W, image_align_sa.w);
} else {
uint32_t H = isl_minify(H0, l);
y += isl_align_npot(H, image_align_sa.h);
}
}
*x_offset_sa = x;
*y_offset_sa = y;
}
/**
* A variant of isl_surf_get_image_offset_sa() specific to
* ISL_DIM_LAYOUT_GEN4_3D.
*/
static void
get_image_offset_sa_gen4_3d(const struct isl_surf *surf,
uint32_t level, uint32_t logical_z_offset_px,
uint32_t *x_offset_sa,
uint32_t *y_offset_sa)
{
assert(level < surf->levels);
if (surf->dim == ISL_SURF_DIM_3D) {
assert(surf->phys_level0_sa.array_len == 1);
assert(logical_z_offset_px < isl_minify(surf->phys_level0_sa.depth, level));
} else {
assert(surf->dim == ISL_SURF_DIM_2D);
assert(surf->usage & ISL_SURF_USAGE_CUBE_BIT);
assert(surf->phys_level0_sa.array_len == 6);
assert(logical_z_offset_px < surf->phys_level0_sa.array_len);
}
const struct isl_extent3d image_align_sa =
isl_surf_get_image_alignment_sa(surf);
const uint32_t W0 = surf->phys_level0_sa.width;
const uint32_t H0 = surf->phys_level0_sa.height;
const uint32_t D0 = surf->phys_level0_sa.depth;
const uint32_t AL = surf->phys_level0_sa.array_len;
uint32_t x = 0;
uint32_t y = 0;
for (uint32_t l = 0; l < level; ++l) {
const uint32_t level_h = isl_align_npot(isl_minify(H0, l), image_align_sa.h);
const uint32_t level_d =
isl_align_npot(surf->dim == ISL_SURF_DIM_3D ? isl_minify(D0, l) : AL,
image_align_sa.d);
const uint32_t max_layers_vert = isl_align(level_d, 1u << l) / (1u << l);
y += level_h * max_layers_vert;
}
const uint32_t level_w = isl_align_npot(isl_minify(W0, level), image_align_sa.w);
const uint32_t level_h = isl_align_npot(isl_minify(H0, level), image_align_sa.h);
const uint32_t level_d =
isl_align_npot(surf->dim == ISL_SURF_DIM_3D ? isl_minify(D0, level) : AL,
image_align_sa.d);
const uint32_t max_layers_horiz = MIN(level_d, 1u << level);
x += level_w * (logical_z_offset_px % max_layers_horiz);
y += level_h * (logical_z_offset_px / max_layers_horiz);
*x_offset_sa = x;
*y_offset_sa = y;
}
static void
get_image_offset_sa_gen6_stencil_hiz(const struct isl_surf *surf,
uint32_t level,
uint32_t logical_array_layer,
uint32_t *x_offset_sa,
uint32_t *y_offset_sa)
{
assert(level < surf->levels);
assert(surf->logical_level0_px.depth == 1);
assert(logical_array_layer < surf->logical_level0_px.array_len);
const struct isl_format_layout *fmtl = isl_format_get_layout(surf->format);
const struct isl_extent3d image_align_sa =
isl_surf_get_image_alignment_sa(surf);
struct isl_tile_info tile_info;
isl_tiling_get_info(surf->tiling, fmtl->bpb, &tile_info);
const struct isl_extent2d tile_extent_sa = {
.w = tile_info.logical_extent_el.w * fmtl->bw,
.h = tile_info.logical_extent_el.h * fmtl->bh,
};
/* Tile size is a multiple of image alignment */
assert(tile_extent_sa.w % image_align_sa.w == 0);
assert(tile_extent_sa.h % image_align_sa.h == 0);
const uint32_t W0 = surf->phys_level0_sa.w;
const uint32_t H0 = surf->phys_level0_sa.h;
/* Each image has the same height as LOD0 because the hardware thinks
* everything is LOD0
*/
const uint32_t H = isl_align(H0, image_align_sa.h);
/* Quick sanity check for consistency */
if (surf->phys_level0_sa.array_len > 1)
assert(surf->array_pitch_el_rows == isl_assert_div(H, fmtl->bh));
uint32_t x = 0, y = 0;
for (uint32_t l = 0; l < level; ++l) {
const uint32_t W = isl_minify(W0, l);
const uint32_t w = isl_align(W, tile_extent_sa.w);
const uint32_t h = isl_align(H * surf->phys_level0_sa.a,
tile_extent_sa.h);
if (l == 0) {
y += h;
} else {
x += w;
}
}
y += H * logical_array_layer;
*x_offset_sa = x;
*y_offset_sa = y;
}
/**
* A variant of isl_surf_get_image_offset_sa() specific to
* ISL_DIM_LAYOUT_GEN9_1D.
*/
static void
get_image_offset_sa_gen9_1d(const struct isl_surf *surf,
uint32_t level, uint32_t layer,
uint32_t *x_offset_sa,
uint32_t *y_offset_sa)
{
assert(level < surf->levels);
assert(layer < surf->phys_level0_sa.array_len);
assert(surf->phys_level0_sa.height == 1);
assert(surf->phys_level0_sa.depth == 1);
assert(surf->samples == 1);
const uint32_t W0 = surf->phys_level0_sa.width;
const struct isl_extent3d image_align_sa =
isl_surf_get_image_alignment_sa(surf);
uint32_t x = 0;
for (uint32_t l = 0; l < level; ++l) {
uint32_t W = isl_minify(W0, l);
uint32_t w = isl_align_npot(W, image_align_sa.w);
x += w;
}
*x_offset_sa = x;
*y_offset_sa = layer * isl_surf_get_array_pitch_sa_rows(surf);
}
/**
* Calculate the offset, in units of surface samples, to a subimage in the
* surface.
*
* @invariant level < surface levels
* @invariant logical_array_layer < logical array length of surface
* @invariant logical_z_offset_px < logical depth of surface at level
*/
void
isl_surf_get_image_offset_sa(const struct isl_surf *surf,
uint32_t level,
uint32_t logical_array_layer,
uint32_t logical_z_offset_px,
uint32_t *x_offset_sa,
uint32_t *y_offset_sa)
{
assert(level < surf->levels);
assert(logical_array_layer < surf->logical_level0_px.array_len);
assert(logical_z_offset_px
< isl_minify(surf->logical_level0_px.depth, level));
switch (surf->dim_layout) {
case ISL_DIM_LAYOUT_GEN9_1D:
get_image_offset_sa_gen9_1d(surf, level, logical_array_layer,
x_offset_sa, y_offset_sa);
break;
case ISL_DIM_LAYOUT_GEN4_2D:
get_image_offset_sa_gen4_2d(surf, level, logical_array_layer
+ logical_z_offset_px,
x_offset_sa, y_offset_sa);
break;
case ISL_DIM_LAYOUT_GEN4_3D:
get_image_offset_sa_gen4_3d(surf, level, logical_array_layer +
logical_z_offset_px,
x_offset_sa, y_offset_sa);
break;
case ISL_DIM_LAYOUT_GEN6_STENCIL_HIZ:
get_image_offset_sa_gen6_stencil_hiz(surf, level, logical_array_layer +
logical_z_offset_px,
x_offset_sa, y_offset_sa);
break;
default:
unreachable("not reached");
}
}
void
isl_surf_get_image_offset_el(const struct isl_surf *surf,
uint32_t level,
uint32_t logical_array_layer,
uint32_t logical_z_offset_px,
uint32_t *x_offset_el,
uint32_t *y_offset_el)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(surf->format);
assert(level < surf->levels);
assert(logical_array_layer < surf->logical_level0_px.array_len);
assert(logical_z_offset_px
< isl_minify(surf->logical_level0_px.depth, level));
uint32_t x_offset_sa, y_offset_sa;
isl_surf_get_image_offset_sa(surf, level,
logical_array_layer,
logical_z_offset_px,
&x_offset_sa,
&y_offset_sa);
*x_offset_el = x_offset_sa / fmtl->bw;
*y_offset_el = y_offset_sa / fmtl->bh;
}
void
isl_surf_get_image_offset_B_tile_sa(const struct isl_surf *surf,
uint32_t level,
uint32_t logical_array_layer,
uint32_t logical_z_offset_px,
uint32_t *offset_B,
uint32_t *x_offset_sa,
uint32_t *y_offset_sa)
{
const struct isl_format_layout *fmtl = isl_format_get_layout(surf->format);
uint32_t total_x_offset_el, total_y_offset_el;
isl_surf_get_image_offset_el(surf, level, logical_array_layer,
logical_z_offset_px,
&total_x_offset_el,
&total_y_offset_el);
uint32_t x_offset_el, y_offset_el;
isl_tiling_get_intratile_offset_el(surf->tiling, fmtl->bpb,
surf->row_pitch_B,
total_x_offset_el,
total_y_offset_el,
offset_B,
&x_offset_el,
&y_offset_el);
if (x_offset_sa) {
*x_offset_sa = x_offset_el * fmtl->bw;
} else {
assert(x_offset_el == 0);
}
if (y_offset_sa) {
*y_offset_sa = y_offset_el * fmtl->bh;
} else {
assert(y_offset_el == 0);
}
}
void
isl_surf_get_image_surf(const struct isl_device *dev,
const struct isl_surf *surf,
uint32_t level,
uint32_t logical_array_layer,
uint32_t logical_z_offset_px,
struct isl_surf *image_surf,
uint32_t *offset_B,
uint32_t *x_offset_sa,
uint32_t *y_offset_sa)
{
isl_surf_get_image_offset_B_tile_sa(surf,
level,
logical_array_layer,
logical_z_offset_px,
offset_B,
x_offset_sa,
y_offset_sa);
/* Even for cube maps there will be only single face, therefore drop the
* corresponding flag if present.
*/
const isl_surf_usage_flags_t usage =
surf->usage & (~ISL_SURF_USAGE_CUBE_BIT);
bool ok UNUSED;
ok = isl_surf_init(dev, image_surf,
.dim = ISL_SURF_DIM_2D,
.format = surf->format,
.width = isl_minify(surf->logical_level0_px.w, level),
.height = isl_minify(surf->logical_level0_px.h, level),
.depth = 1,
.levels = 1,
.array_len = 1,
.samples = surf->samples,
.row_pitch_B = surf->row_pitch_B,
.usage = usage,
.tiling_flags = (1 << surf->tiling));
assert(ok);
}
void
isl_tiling_get_intratile_offset_el(enum isl_tiling tiling,
uint32_t bpb,
uint32_t row_pitch_B,
uint32_t total_x_offset_el,
uint32_t total_y_offset_el,
uint32_t *base_address_offset,
uint32_t *x_offset_el,
uint32_t *y_offset_el)
{
if (tiling == ISL_TILING_LINEAR) {
assert(bpb % 8 == 0);
*base_address_offset = total_y_offset_el * row_pitch_B +
total_x_offset_el * (bpb / 8);
*x_offset_el = 0;
*y_offset_el = 0;
return;
}
struct isl_tile_info tile_info;
isl_tiling_get_info(tiling, bpb, &tile_info);
assert(row_pitch_B % tile_info.phys_extent_B.width == 0);
/* For non-power-of-two formats, we need the address to be both tile and
* element-aligned. The easiest way to achieve this is to work with a tile
* that is three times as wide as the regular tile.
*
* The tile info returned by get_tile_info has a logical size that is an
* integer number of tile_info.format_bpb size elements. To scale the
* tile, we scale up the physical width and then treat the logical tile
* size as if it has bpb size elements.
*/
const uint32_t tile_el_scale = bpb / tile_info.format_bpb;
tile_info.phys_extent_B.width *= tile_el_scale;
/* Compute the offset into the tile */
*x_offset_el = total_x_offset_el % tile_info.logical_extent_el.w;
*y_offset_el = total_y_offset_el % tile_info.logical_extent_el.h;
/* Compute the offset of the tile in units of whole tiles */
uint32_t x_offset_tl = total_x_offset_el / tile_info.logical_extent_el.w;
uint32_t y_offset_tl = total_y_offset_el / tile_info.logical_extent_el.h;
*base_address_offset =
y_offset_tl * tile_info.phys_extent_B.h * row_pitch_B +
x_offset_tl * tile_info.phys_extent_B.h * tile_info.phys_extent_B.w;
}
uint32_t
isl_surf_get_depth_format(const struct isl_device *dev,
const struct isl_surf *surf)
{
/* Support for separate stencil buffers began in gen5. Support for
* interleaved depthstencil buffers ceased in gen7. The intermediate gens,
* those that supported separate and interleaved stencil, were gen5 and
* gen6.
*
* For a list of all available formats, see the Sandybridge PRM >> Volume
* 2 Part 1: 3D/Media - 3D Pipeline >> 3DSTATE_DEPTH_BUFFER >> Surface
* Format (p321).
*/
bool has_stencil = surf->usage & ISL_SURF_USAGE_STENCIL_BIT;
assert(surf->usage & ISL_SURF_USAGE_DEPTH_BIT);
if (has_stencil)
assert(ISL_DEV_GEN(dev) < 7);
switch (surf->format) {
default:
unreachable("bad isl depth format");
case ISL_FORMAT_R32_FLOAT_X8X24_TYPELESS:
assert(ISL_DEV_GEN(dev) < 7);
return 0; /* D32_FLOAT_S8X24_UINT */
case ISL_FORMAT_R32_FLOAT:
assert(!has_stencil);
return 1; /* D32_FLOAT */
case ISL_FORMAT_R24_UNORM_X8_TYPELESS:
if (has_stencil) {
assert(ISL_DEV_GEN(dev) < 7);
return 2; /* D24_UNORM_S8_UINT */
} else {
assert(ISL_DEV_GEN(dev) >= 5);
return 3; /* D24_UNORM_X8_UINT */
}
case ISL_FORMAT_R16_UNORM:
assert(!has_stencil);
return 5; /* D16_UNORM */
}
}
bool
isl_swizzle_supports_rendering(const struct gen_device_info *devinfo,
struct isl_swizzle swizzle)
{
if (devinfo->is_haswell) {
/* From the Haswell PRM,
* RENDER_SURFACE_STATE::Shader Channel Select Red
*
* "The Shader channel selects also define which shader channels are
* written to which surface channel. If the Shader channel select is
* SCS_ZERO or SCS_ONE then it is not written to the surface. If the
* shader channel select is SCS_RED it is written to the surface red
* channel and so on. If more than one shader channel select is set
* to the same surface channel only the first shader channel in RGBA
* order will be written."
*/
return true;
} else if (devinfo->gen <= 7) {
/* Ivy Bridge and early doesn't have any swizzling */
return isl_swizzle_is_identity(swizzle);
} else {
/* From the Sky Lake PRM Vol. 2d,
* RENDER_SURFACE_STATE::Shader Channel Select Red
*
* "For Render Target, Red, Green and Blue Shader Channel Selects
* MUST be such that only valid components can be swapped i.e. only
* change the order of components in the pixel. Any other values for
* these Shader Channel Select fields are not valid for Render
* Targets. This also means that there MUST not be multiple shader
* channels mapped to the same RT channel."
*
* From the Sky Lake PRM Vol. 2d,
* RENDER_SURFACE_STATE::Shader Channel Select Alpha
*
* "For Render Target, this field MUST be programmed to
* value = SCS_ALPHA."
*/
return (swizzle.r == ISL_CHANNEL_SELECT_RED ||
swizzle.r == ISL_CHANNEL_SELECT_GREEN ||
swizzle.r == ISL_CHANNEL_SELECT_BLUE) &&
(swizzle.g == ISL_CHANNEL_SELECT_RED ||
swizzle.g == ISL_CHANNEL_SELECT_GREEN ||
swizzle.g == ISL_CHANNEL_SELECT_BLUE) &&
(swizzle.b == ISL_CHANNEL_SELECT_RED ||
swizzle.b == ISL_CHANNEL_SELECT_GREEN ||
swizzle.b == ISL_CHANNEL_SELECT_BLUE) &&
swizzle.r != swizzle.g &&
swizzle.r != swizzle.b &&
swizzle.g != swizzle.b &&
swizzle.a == ISL_CHANNEL_SELECT_ALPHA;
}
}
static enum isl_channel_select
swizzle_select(enum isl_channel_select chan, struct isl_swizzle swizzle)
{
switch (chan) {
case ISL_CHANNEL_SELECT_ZERO:
case ISL_CHANNEL_SELECT_ONE:
return chan;
case ISL_CHANNEL_SELECT_RED:
return swizzle.r;
case ISL_CHANNEL_SELECT_GREEN:
return swizzle.g;
case ISL_CHANNEL_SELECT_BLUE:
return swizzle.b;
case ISL_CHANNEL_SELECT_ALPHA:
return swizzle.a;
default:
unreachable("Invalid swizzle component");
}
}
/**
* Returns the single swizzle that is equivalent to applying the two given
* swizzles in sequence.
*/
struct isl_swizzle
isl_swizzle_compose(struct isl_swizzle first, struct isl_swizzle second)
{
return (struct isl_swizzle) {
.r = swizzle_select(first.r, second),
.g = swizzle_select(first.g, second),
.b = swizzle_select(first.b, second),
.a = swizzle_select(first.a, second),
};
}
/**
* Returns a swizzle that is the pseudo-inverse of this swizzle.
*/
struct isl_swizzle
isl_swizzle_invert(struct isl_swizzle swizzle)
{
/* Default to zero for channels which do not show up in the swizzle */
enum isl_channel_select chans[4] = {
ISL_CHANNEL_SELECT_ZERO,
ISL_CHANNEL_SELECT_ZERO,
ISL_CHANNEL_SELECT_ZERO,
ISL_CHANNEL_SELECT_ZERO,
};
/* We go in ABGR order so that, if there are any duplicates, the first one
* is taken if you look at it in RGBA order. This is what Haswell hardware
* does for render target swizzles.
*/
if ((unsigned)(swizzle.a - ISL_CHANNEL_SELECT_RED) < 4)
chans[swizzle.a - ISL_CHANNEL_SELECT_RED] = ISL_CHANNEL_SELECT_ALPHA;
if ((unsigned)(swizzle.b - ISL_CHANNEL_SELECT_RED) < 4)
chans[swizzle.b - ISL_CHANNEL_SELECT_RED] = ISL_CHANNEL_SELECT_BLUE;
if ((unsigned)(swizzle.g - ISL_CHANNEL_SELECT_RED) < 4)
chans[swizzle.g - ISL_CHANNEL_SELECT_RED] = ISL_CHANNEL_SELECT_GREEN;
if ((unsigned)(swizzle.r - ISL_CHANNEL_SELECT_RED) < 4)
chans[swizzle.r - ISL_CHANNEL_SELECT_RED] = ISL_CHANNEL_SELECT_RED;
return (struct isl_swizzle) { chans[0], chans[1], chans[2], chans[3] };
}