static boolean
swr_texture_layout(struct swr_screen *screen,
struct swr_resource *res,
boolean allocate)
{
struct pipe_resource *pt = &res->base;
pipe_format fmt = pt->format;
const struct util_format_description *desc = util_format_description(fmt);
res->has_depth = util_format_has_depth(desc);
res->has_stencil = util_format_has_stencil(desc);
if (res->has_stencil && !res->has_depth)
fmt = PIPE_FORMAT_R8_UINT;
res->swr.width = pt->width0;
res->swr.height = pt->height0;
res->swr.depth = pt->depth0;
res->swr.type = swr_convert_target_type(pt->target);
res->swr.tileMode = SWR_TILE_NONE;
res->swr.format = mesa_to_swr_format(fmt);
res->swr.numSamples = (1 << pt->nr_samples);
SWR_FORMAT_INFO finfo = GetFormatInfo(res->swr.format);
unsigned total_size = 0;
unsigned width = pt->width0;
unsigned height = pt->height0;
unsigned depth = pt->depth0;
unsigned layers = pt->array_size;
for (int level = 0; level <= pt->last_level; level++) {
unsigned alignedWidth, alignedHeight;
unsigned num_slices;
if (pt->bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_DEPTH_STENCIL)) {
alignedWidth = align(width, KNOB_MACROTILE_X_DIM);
alignedHeight = align(height, KNOB_MACROTILE_Y_DIM);
} else {
alignedWidth = width;
alignedHeight = height;
}
if (level == 0) {
res->alignedWidth = alignedWidth;
res->alignedHeight = alignedHeight;
}
res->row_stride[level] = alignedWidth * finfo.Bpp;
res->img_stride[level] = res->row_stride[level] * alignedHeight;
res->mip_offsets[level] = total_size;
if (pt->target == PIPE_TEXTURE_3D)
num_slices = depth;
else if (pt->target == PIPE_TEXTURE_1D_ARRAY
|| pt->target == PIPE_TEXTURE_2D_ARRAY
|| pt->target == PIPE_TEXTURE_CUBE
|| pt->target == PIPE_TEXTURE_CUBE_ARRAY)
num_slices = layers;
else
num_slices = 1;
total_size += res->img_stride[level] * num_slices;
if (total_size > SWR_MAX_TEXTURE_SIZE)
return FALSE;
width = u_minify(width, 1);
height = u_minify(height, 1);
depth = u_minify(depth, 1);
}
res->swr.halign = res->alignedWidth;
res->swr.valign = res->alignedHeight;
res->swr.pitch = res->row_stride[0];
if (allocate) {
res->swr.pBaseAddress = (uint8_t *)AlignedMalloc(total_size, 64);
if (res->has_depth && res->has_stencil) {
SWR_FORMAT_INFO finfo = GetFormatInfo(res->secondary.format);
res->secondary.width = pt->width0;
res->secondary.height = pt->height0;
res->secondary.depth = pt->depth0;
res->secondary.type = SURFACE_2D;
res->secondary.tileMode = SWR_TILE_NONE;
res->secondary.format = R8_UINT;
res->secondary.numSamples = (1 << pt->nr_samples);
res->secondary.pitch = res->alignedWidth * finfo.Bpp;
res->secondary.pBaseAddress = (uint8_t *)AlignedMalloc(
res->alignedHeight * res->secondary.pitch, 64);
}
}
return TRUE;
}
static bool
swr_texture_layout(struct swr_screen *screen,
struct swr_resource *res,
boolean allocate)
{
struct pipe_resource *pt = &res->base;
pipe_format fmt = pt->format;
const struct util_format_description *desc = util_format_description(fmt);
res->has_depth = util_format_has_depth(desc);
res->has_stencil = util_format_has_stencil(desc);
if (res->has_stencil && !res->has_depth)
fmt = PIPE_FORMAT_R8_UINT;
/* We always use the SWR layout. For 2D and 3D textures this looks like:
*
* |<------- pitch ------->|
* +=======================+-------
* |Array 0 | ^
* | | |
* | Level 0 | |
* | | |
* | | qpitch
* +-----------+-----------+ |
* | | L2L2L2L2 | |
* | Level 1 | L3L3 | |
* | | L4 | v
* +===========+===========+-------
* |Array 1 |
* | |
* | Level 0 |
* | |
* | |
* +-----------+-----------+
* | | L2L2L2L2 |
* | Level 1 | L3L3 |
* | | L4 |
* +===========+===========+
*
* The overall width in bytes is known as the pitch, while the overall
* height in rows is the qpitch. Array slices are laid out logically below
* one another, qpitch rows apart. For 3D surfaces, the "level" values are
* just invalid for the higher array numbers (since depth is also
* minified). 1D and 1D array surfaces are stored effectively the same way,
* except that pitch never plays into it. All the levels are logically
* adjacent to each other on the X axis. The qpitch becomes the number of
* elements between array slices, while the pitch is unused.
*
* Each level's sizes are subject to the valign and halign settings of the
* surface. For compressed formats that swr is unaware of, we will use an
* appropriately-sized uncompressed format, and scale the widths/heights.
*
* This surface is stored inside res->swr. For depth/stencil textures,
* res->secondary will have an identically-laid-out but R8_UINT-formatted
* stencil tree. In the Z32F_S8 case, the primary surface still has 64-bpp
* texels, to simplify map/unmap logic which copies the stencil values
* in/out.
*/
res->swr.width = pt->width0;
res->swr.height = pt->height0;
res->swr.type = swr_convert_target_type(pt->target);
res->swr.tileMode = SWR_TILE_NONE;
res->swr.format = mesa_to_swr_format(fmt);
res->swr.numSamples = std::max(1u, pt->nr_samples);
if (pt->bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_DEPTH_STENCIL)) {
res->swr.halign = KNOB_MACROTILE_X_DIM;
res->swr.valign = KNOB_MACROTILE_Y_DIM;
} else {
res->swr.halign = 1;
res->swr.valign = 1;
}
unsigned halign = res->swr.halign * util_format_get_blockwidth(fmt);
unsigned width = align(pt->width0, halign);
if (pt->target == PIPE_TEXTURE_1D || pt->target == PIPE_TEXTURE_1D_ARRAY) {
for (int level = 1; level <= pt->last_level; level++)
width += align(u_minify(pt->width0, level), halign);
res->swr.pitch = util_format_get_blocksize(fmt);
res->swr.qpitch = util_format_get_nblocksx(fmt, width);
} else {
// The pitch is the overall width of the texture in bytes. Most of the
// time this is the pitch of level 0 since all the other levels fit
// underneath it. However in some degenerate situations, the width of
// level1 + level2 may be larger. In that case, we use those
// widths. This can happen if, e.g. halign is 32, and the width of level
// 0 is 32 or less. In that case, the aligned levels 1 and 2 will also
// be 32 each, adding up to 64.
unsigned valign = res->swr.valign * util_format_get_blockheight(fmt);
if (pt->last_level > 1) {
width = std::max<uint32_t>(
width,
align(u_minify(pt->width0, 1), halign) +
align(u_minify(pt->width0, 2), halign));
}
res->swr.pitch = util_format_get_stride(fmt, width);
// The qpitch is controlled by either the height of the second LOD, or
// the combination of all the later LODs.
unsigned height = align(pt->height0, valign);
if (pt->last_level == 1) {
height += align(u_minify(pt->height0, 1), valign);
} else if (pt->last_level > 1) {
unsigned level1 = align(u_minify(pt->height0, 1), valign);
unsigned level2 = 0;
for (int level = 2; level <= pt->last_level; level++) {
level2 += align(u_minify(pt->height0, level), valign);
}
height += std::max(level1, level2);
}
res->swr.qpitch = util_format_get_nblocksy(fmt, height);
}
if (pt->target == PIPE_TEXTURE_3D)
res->swr.depth = pt->depth0;
else
res->swr.depth = pt->array_size;
// Fix up swr format if necessary so that LOD offset computation works
if (res->swr.format == (SWR_FORMAT)-1) {
switch (util_format_get_blocksize(fmt)) {
default:
unreachable("Unexpected format block size");
case 1: res->swr.format = R8_UINT; break;
case 2: res->swr.format = R16_UINT; break;
case 4: res->swr.format = R32_UINT; break;
case 8:
if (util_format_is_compressed(fmt))
res->swr.format = BC4_UNORM;
else
res->swr.format = R32G32_UINT;
break;
case 16:
if (util_format_is_compressed(fmt))
res->swr.format = BC5_UNORM;
else
res->swr.format = R32G32B32A32_UINT;
break;
}
}
for (int level = 0; level <= pt->last_level; level++) {
res->mip_offsets[level] =
ComputeSurfaceOffset<false>(0, 0, 0, 0, 0, level, &res->swr);
}
size_t total_size =
(size_t)res->swr.depth * res->swr.qpitch * res->swr.pitch;
if (total_size > SWR_MAX_TEXTURE_SIZE)
return false;
if (allocate) {
res->swr.pBaseAddress = (uint8_t *)AlignedMalloc(total_size, 64);
if (res->has_depth && res->has_stencil) {
res->secondary = res->swr;
res->secondary.format = R8_UINT;
res->secondary.pitch = res->swr.pitch / util_format_get_blocksize(fmt);
for (int level = 0; level <= pt->last_level; level++) {
res->secondary_mip_offsets[level] =
ComputeSurfaceOffset<false>(0, 0, 0, 0, 0, level, &res->secondary);
}
res->secondary.pBaseAddress = (uint8_t *)AlignedMalloc(
res->secondary.depth * res->secondary.qpitch *
res->secondary.pitch, 64);
}
}
return true;
}
