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util: Move util_is_power_of_two to bitscan.h and rename to util_is_power_of_two_or_zero

Browse Source 
The new name make the zero-input behavior more obvious.  The next
patch adds a new function with different zero-input behavior.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Suggested-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
This commit is contained in:
Ian Romanick
2017-11-13 11:17:41 -08:00
parent a3a16d4aa7
commit d76c204d05
37 changed files with 79 additions and 73 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/amd/common/ac_gpu_info.c
View File

@@ -333,8 +333,8 @@ bool ac_query_gpu_info(int fd, amdgpu_device_handle dev,
}
info->has_virtual_memory = true;
assert(util_is_power_of_two(dma.available_rings + 1));
assert(util_is_power_of_two(compute.available_rings + 1));
assert(util_is_power_of_two_or_zero(dma.available_rings + 1));
assert(util_is_power_of_two_or_zero(compute.available_rings + 1));
info->num_sdma_rings = util_bitcount(dma.available_rings);
info->num_compute_rings = util_bitcount(compute.available_rings);

2
src/amd/common/ac_surface.c
View File

@@ -275,7 +275,7 @@ static int gfx6_compute_level(ADDR_HANDLE addrlib,
AddrSurfInfoIn->bpp) {
unsigned alignment = 256 / (AddrSurfInfoIn->bpp / 8);
assert(util_is_power_of_two(AddrSurfInfoIn->bpp));
assert(util_is_power_of_two_or_zero(AddrSurfInfoIn->bpp));
AddrSurfInfoIn->width = align(AddrSurfInfoIn->width, alignment);
}

4
src/amd/vulkan/radv_formats.c
View File

@@ -638,13 +638,13 @@ radv_physical_device_get_format_properties(struct radv_physical_device *physical
tiled |= VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BLEND_BIT;
}
}
if (tiled && util_is_power_of_two(vk_format_get_blocksize(format)) && !scaled) {
if (tiled && util_is_power_of_two_or_zero(vk_format_get_blocksize(format)) && !scaled) {
tiled |= VK_FORMAT_FEATURE_TRANSFER_SRC_BIT_KHR |
VK_FORMAT_FEATURE_TRANSFER_DST_BIT_KHR;
}
}
if (linear && util_is_power_of_two(vk_format_get_blocksize(format)) && !scaled) {
if (linear && util_is_power_of_two_or_zero(vk_format_get_blocksize(format)) && !scaled) {
linear |= VK_FORMAT_FEATURE_TRANSFER_SRC_BIT_KHR |
VK_FORMAT_FEATURE_TRANSFER_DST_BIT_KHR;
}

4
src/broadcom/compiler/nir_to_vir.c
View File

@@ -233,7 +233,7 @@ static struct qreg
ntq_get_alu_src(struct v3d_compile *c, nir_alu_instr *instr,
unsigned src)
{
assert(util_is_power_of_two(instr->dest.write_mask));
assert(util_is_power_of_two_or_zero(instr->dest.write_mask));
unsigned chan = ffs(instr->dest.write_mask) - 1;
struct qreg r = ntq_get_src(c, instr->src[src].src,
instr->src[src].swizzle[chan]);
@@ -862,7 +862,7 @@ ntq_emit_alu(struct v3d_compile *c, nir_alu_instr *instr)
/* We have a scalar result, so the instruction should only have a
* single channel written to.
*/
assert(util_is_power_of_two(instr->dest.write_mask));
assert(util_is_power_of_two_or_zero(instr->dest.write_mask));
ntq_store_dest(c, &instr->dest.dest,
ffs(instr->dest.write_mask) - 1, result);
}

2
src/gallium/auxiliary/gallivm/lp_bld_arit.c
View File

@@ -1307,7 +1307,7 @@ lp_build_mul_imm(struct lp_build_context *bld,
if(b == 2 && bld->type.floating)
return lp_build_add(bld, a, a);
if(util_is_power_of_two(b)) {
if(util_is_power_of_two_or_zero(b)) {
unsigned shift = ffs(b) - 1;
if(bld->type.floating) {

2
src/gallium/auxiliary/gallivm/lp_bld_debug.cpp
View File

@@ -60,7 +60,7 @@
extern "C" boolean
lp_check_alignment(const void *ptr, unsigned alignment)
{
assert(util_is_power_of_two(alignment));
assert(util_is_power_of_two_or_zero(alignment));
return ((uintptr_t)ptr & (alignment - 1)) == 0;
}

4
src/gallium/auxiliary/gallivm/lp_bld_format_aos.c
View File

@@ -496,7 +496,7 @@ lp_build_fetch_rgba_aos(struct gallivm_state *gallivm,
if (format_matches_type(format_desc, type) &&
format_desc->block.bits <= type.width * 4 &&
/* XXX this shouldn't be needed */
util_is_power_of_two(format_desc->block.bits)) {
util_is_power_of_two_or_zero(format_desc->block.bits)) {
LLVMValueRef packed;
LLVMTypeRef dst_vec_type = lp_build_vec_type(gallivm, type);
struct lp_type fetch_type;
@@ -609,7 +609,7 @@ lp_build_fetch_rgba_aos(struct gallivm_state *gallivm,
format_desc->block.width == 1 &&
format_desc->block.height == 1 &&
/* XXX this shouldn't be needed */
util_is_power_of_two(format_desc->block.bits) &&
util_is_power_of_two_or_zero(format_desc->block.bits) &&
format_desc->block.bits <= 32 &&
format_desc->is_bitmask &&
!format_desc->is_mixed &&

8
src/gallium/auxiliary/gallivm/lp_bld_gather.c
View File

@@ -118,7 +118,7 @@ lp_build_gather_elem(struct gallivm_state *gallivm,
*/
if (!aligned) {
LLVMSetAlignment(res, 1);
} else if (!util_is_power_of_two(src_width)) {
} else if (!util_is_power_of_two_or_zero(src_width)) {
/*
* Full alignment is impossible, assume the caller really meant
* the individual elements were aligned (e.g. 3x32bit format).
@@ -130,7 +130,7 @@ lp_build_gather_elem(struct gallivm_state *gallivm,
* this should cover all the 3-channel formats.
*/
if (((src_width / 24) * 24 == src_width) &&
util_is_power_of_two(src_width / 24)) {
util_is_power_of_two_or_zero(src_width / 24)) {
LLVMSetAlignment(res, src_width / 24);
} else {
LLVMSetAlignment(res, 1);
@@ -199,7 +199,7 @@ lp_build_gather_elem_vec(struct gallivm_state *gallivm,
*/
if (!aligned) {
LLVMSetAlignment(res, 1);
} else if (!util_is_power_of_two(src_width)) {
} else if (!util_is_power_of_two_or_zero(src_width)) {
/*
* Full alignment is impossible, assume the caller really meant
* the individual elements were aligned (e.g. 3x32bit format).
@@ -211,7 +211,7 @@ lp_build_gather_elem_vec(struct gallivm_state *gallivm,
* this should cover all the 3-channel formats.
*/
if (((src_width / 24) * 24 == src_width) &&
util_is_power_of_two(src_width / 24)) {
util_is_power_of_two_or_zero(src_width / 24)) {
LLVMSetAlignment(res, src_width / 24);
} else {
LLVMSetAlignment(res, 1);

2
src/gallium/auxiliary/gallivm/lp_bld_pack.c
View File

@@ -219,7 +219,7 @@ lp_build_concat(struct gallivm_state *gallivm,
LLVMValueRef shuffles[LP_MAX_VECTOR_LENGTH];
assert(src_type.length * num_vectors <= ARRAY_SIZE(shuffles));
assert(util_is_power_of_two(num_vectors));
assert(util_is_power_of_two_or_zero(num_vectors));
new_length = src_type.length;

6
src/gallium/auxiliary/gallivm/lp_bld_sample.c
View File

@@ -114,9 +114,9 @@ lp_sampler_static_texture_state(struct lp_static_texture_state *state,
state->swizzle_a = view->swizzle_a;
state->target = view->target;
state->pot_width = util_is_power_of_two(texture->width0);
state->pot_height = util_is_power_of_two(texture->height0);
state->pot_depth = util_is_power_of_two(texture->depth0);
state->pot_width = util_is_power_of_two_or_zero(texture->width0);
state->pot_height = util_is_power_of_two_or_zero(texture->height0);
state->pot_depth = util_is_power_of_two_or_zero(texture->depth0);
state->level_zero_only = !view->u.tex.last_level;
/*

10
src/gallium/auxiliary/util/u_math.h
View File

@@ -179,14 +179,6 @@ util_fast_pow(float x, float y)
return util_fast_exp2(util_fast_log2(x) * y);
}
/* Note that this counts zero as a power of two.
*/
static inline boolean
util_is_power_of_two( unsigned v )
{
return (v & (v-1)) == 0;
}
/**
* Floor(x), returned as int.
@@ -459,7 +451,7 @@ util_next_power_of_two(unsigned x)
if (x <= 1)
return 1;
if (util_is_power_of_two(x))
if (util_is_power_of_two_or_zero(x))
return x;
val--;

2
src/gallium/auxiliary/util/u_ringbuffer.c
View File

@@ -27,7 +27,7 @@ struct util_ringbuffer *util_ringbuffer_create( unsigned dwords )
if (!ring)
return NULL;
assert(util_is_power_of_two(dwords));
assert(util_is_power_of_two_or_zero(dwords));
ring->buf = MALLOC( dwords * sizeof(unsigned) );
if (ring->buf == NULL)

2
src/gallium/drivers/etnaviv/etnaviv_blt.c
View File

@@ -178,7 +178,7 @@ emit_blt_copyimage(struct etna_cmd_stream *stream, const struct blt_imgcopy_op *
static void
emit_blt_inplace(struct etna_cmd_stream *stream, const struct blt_inplace_op *op)
{
assert(op->bpp > 0 && util_is_power_of_two(op->bpp));
assert(op->bpp > 0 && util_is_power_of_two_or_zero(op->bpp));
etna_cmd_stream_reserve(stream, 64*2); /* Never allow BLT sequences to be broken up */
etna_set_state(stream, VIVS_BLT_ENABLE, 0x00000001);
etna_set_state(stream, VIVS_BLT_CONFIG,

3
src/gallium/drivers/etnaviv/etnaviv_texture_state.c
View File

@@ -158,7 +158,8 @@ etna_create_sampler_view_state(struct pipe_context *pctx, struct pipe_resource *
/* Workaround for npot textures -- it appears that only CLAMP_TO_EDGE is
* supported when the appropriate capability is not set. */
if (!ctx->specs.npot_tex_any_wrap &&
(!util_is_power_of_two(res->base.width0) || !util_is_power_of_two(res->base.height0))) {
(!util_is_power_of_two_or_zero(res->base.width0) ||
!util_is_power_of_two_or_zero(res->base.height0))) {
sv->TE_SAMPLER_CONFIG0_MASK = ~(VIVS_TE_SAMPLER_CONFIG0_UWRAP__MASK |
VIVS_TE_SAMPLER_CONFIG0_VWRAP__MASK);
sv->TE_SAMPLER_CONFIG0 |=

2
src/gallium/drivers/freedreno/freedreno_query_hw.c
View File

@@ -301,7 +301,7 @@ fd_hw_sample_init(struct fd_batch *batch, uint32_t size)
struct fd_hw_sample *samp = slab_alloc_st(&batch->ctx->sample_pool);
pipe_reference_init(&samp->reference, 1);
samp->size = size;
debug_assert(util_is_power_of_two(size));
debug_assert(util_is_power_of_two_or_zero(size));
batch->next_sample_offset = align(batch->next_sample_offset, size);
samp->offset = batch->next_sample_offset;
/* NOTE: slab_alloc_st() does not zero out the buffer: */

3
src/gallium/drivers/i915/i915_state_sampler.c
View File

@@ -307,7 +307,8 @@ static void update_map(struct i915_context *i915,
int first_level = view->u.tex.first_level;
const uint num_levels = pt->last_level - first_level;
unsigned max_lod = num_levels * 4;
bool is_npot = (!util_is_power_of_two(pt->width0) || !util_is_power_of_two(pt->height0));
bool is_npot = (!util_is_power_of_two_or_zero(pt->width0) ||
!util_is_power_of_two_or_zero(pt->height0));
uint format, pitch;
/*

2
src/gallium/drivers/llvmpipe/lp_state_fs.c
View File

@@ -2240,7 +2240,7 @@ generate_unswizzled_blend(struct gallivm_state *gallivm,
if (dst_count > src_count) {
if ((dst_type.width == 8 || dst_type.width == 16) &&
util_is_power_of_two(dst_type.length) &&
util_is_power_of_two_or_zero(dst_type.length) &&
dst_type.length * dst_type.width < 128) {
/*
* Never try to load values as 4xi8 which we will then

2
src/gallium/drivers/llvmpipe/lp_texture.c
View File

@@ -670,7 +670,7 @@ llvmpipe_get_format_alignment( enum pipe_format format )
bytes = size / 8;
if (!util_is_power_of_two(bytes)) {
if (!util_is_power_of_two_or_zero(bytes)) {
bytes /= desc->nr_channels;
}

2
src/gallium/drivers/nouveau/codegen/nv50_ir.cpp
View File

@@ -423,7 +423,7 @@ ImmediateValue::isNegative() const
bool
ImmediateValue::isPow2() const
{
return util_is_power_of_two(reg.data.u32);
return util_is_power_of_two_or_zero(reg.data.u32);
}
void

4
src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
View File

@@ -1305,7 +1305,7 @@ ConstantFolding::opnd(Instruction *i, ImmediateValue &imm0, int s)
src->op == OP_SHR &&
src->src(1).getImmediate(imm1) &&
i->src(t).mod == Modifier(0) &&
util_is_power_of_two(imm0.reg.data.u32 + 1)) {
util_is_power_of_two_or_zero(imm0.reg.data.u32 + 1)) {
// low byte = offset, high byte = width
uint32_t ext = (util_last_bit(imm0.reg.data.u32) << 8) | imm1.reg.data.u32;
i->op = OP_EXTBF;
@@ -1314,7 +1314,7 @@ ConstantFolding::opnd(Instruction *i, ImmediateValue &imm0, int s)
} else if (src->op == OP_SHL &&
src->src(1).getImmediate(imm1) &&
i->src(t).mod == Modifier(0) &&
util_is_power_of_two(~imm0.reg.data.u32 + 1) &&
util_is_power_of_two_or_zero(~imm0.reg.data.u32 + 1) &&
util_last_bit(~imm0.reg.data.u32) <= imm1.reg.data.u32) {
i->op = OP_MOV;
i->setSrc(s, NULL);

6
src/gallium/drivers/nouveau/nv30/nv30_miptree.c
View File

@@ -401,9 +401,9 @@ nv30_miptree_create(struct pipe_screen *pscreen,
if ((pt->target == PIPE_TEXTURE_RECT) ||
(pt->bind & PIPE_BIND_SCANOUT) ||
!util_is_power_of_two(pt->width0) ||
!util_is_power_of_two(pt->height0) ||
!util_is_power_of_two(pt->depth0) ||
!util_is_power_of_two_or_zero(pt->width0) ||
!util_is_power_of_two_or_zero(pt->height0) ||
!util_is_power_of_two_or_zero(pt->depth0) ||
util_format_is_compressed(pt->format) ||
util_format_is_float(pt->format) || mt->ms_mode) {
mt->uniform_pitch = util_format_get_nblocksx(pt->format, w) * blocksz;

2
src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c
View File

@@ -183,7 +183,7 @@ nvc0_validate_fb(struct nvc0_context *nvc0)
}
if (nr_cbufs == 0 && !fb->zsbuf) {
assert(util_is_power_of_two(fb->samples));
assert(util_is_power_of_two_or_zero(fb->samples));
assert(fb->samples <= 8);
nvc0_fb_set_null_rt(push, 0, fb->layers);

6
src/gallium/drivers/r300/r300_texture_desc.c
View File

@@ -270,15 +270,15 @@ static void r300_setup_miptree(struct r300_screen *screen,
static void r300_setup_flags(struct r300_resource *tex)
{
tex->tex.uses_stride_addressing =
!util_is_power_of_two(tex->b.b.width0) ||
!util_is_power_of_two_or_zero(tex->b.b.width0) ||
(tex->tex.stride_in_bytes_override &&
r300_stride_to_width(tex->b.b.format,
tex->tex.stride_in_bytes_override) != tex->b.b.width0);
tex->tex.is_npot =
tex->tex.uses_stride_addressing ||
!util_is_power_of_two(tex->b.b.height0) ||
!util_is_power_of_two(tex->b.b.depth0);
!util_is_power_of_two_or_zero(tex->b.b.height0) ||
!util_is_power_of_two_or_zero(tex->b.b.depth0);
}
static void r300_setup_cbzb_flags(struct r300_screen *rscreen,

2
src/gallium/drivers/r600/r600_texture.c
View File

@@ -217,7 +217,7 @@ static int r600_init_surface(struct r600_common_screen *rscreen,
bpe = 4; /* stencil is allocated separately on evergreen */
} else {
bpe = util_format_get_blocksize(ptex->format);
assert(util_is_power_of_two(bpe));
assert(util_is_power_of_two_or_zero(bpe));
}
if (!is_flushed_depth && is_depth) {

2
src/gallium/drivers/radeon/r600_texture.c
View File

@@ -240,7 +240,7 @@ static int r600_init_surface(struct si_screen *sscreen,
bpe = 4; /* stencil is allocated separately on evergreen */
} else {
bpe = util_format_get_blocksize(ptex->format);
assert(util_is_power_of_two(bpe));
assert(util_is_power_of_two_or_zero(bpe));
}
if (!is_flushed_depth && is_depth) {

2
src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c
View File

@@ -192,7 +192,7 @@ LLVMValueRef si_llvm_bound_index(struct si_shader_context *ctx,
LLVMValueRef c_max = LLVMConstInt(ctx->i32, num - 1, 0);
LLVMValueRef cc;
if (util_is_power_of_two(num)) {
if (util_is_power_of_two_or_zero(num)) {
index = LLVMBuildAnd(builder, index, c_max, "");
} else {
/* In theory, this MAX pattern should result in code that is

12
src/gallium/drivers/softpipe/sp_texture.c
View File

@@ -166,9 +166,9 @@ softpipe_resource_create_front(struct pipe_screen *screen,
pipe_reference_init(&spr->base.reference, 1);
spr->base.screen = screen;
spr->pot = (util_is_power_of_two(templat->width0) &&
util_is_power_of_two(templat->height0) &&
util_is_power_of_two(templat->depth0));
spr->pot = (util_is_power_of_two_or_zero(templat->width0) &&
util_is_power_of_two_or_zero(templat->height0) &&
util_is_power_of_two_or_zero(templat->depth0));
if (spr->base.bind & (PIPE_BIND_DISPLAY_TARGET |
PIPE_BIND_SCANOUT |
@@ -231,9 +231,9 @@ softpipe_resource_from_handle(struct pipe_screen *screen,
pipe_reference_init(&spr->base.reference, 1);
spr->base.screen = screen;
spr->pot = (util_is_power_of_two(templat->width0) &&
util_is_power_of_two(templat->height0) &&
util_is_power_of_two(templat->depth0));
spr->pot = (util_is_power_of_two_or_zero(templat->width0) &&
util_is_power_of_two_or_zero(templat->height0) &&
util_is_power_of_two_or_zero(templat->depth0));
spr->dt = winsys->displaytarget_from_handle(winsys,
templat,

4
src/gallium/drivers/swr/swr_screen.cpp
View File

@@ -105,7 +105,7 @@ swr_is_format_supported(struct pipe_screen *_screen,
return FALSE;
if ((sample_count > screen->msaa_max_count)
|| !util_is_power_of_two(sample_count))
|| !util_is_power_of_two_or_zero(sample_count))
return FALSE;
if (bind & PIPE_BIND_DISPLAY_TARGET) {
@@ -1103,7 +1103,7 @@ swr_validate_env_options(struct swr_screen *screen)
int msaa_max_count = debug_get_num_option("SWR_MSAA_MAX_COUNT", 1);
if (msaa_max_count != 1) {
if ((msaa_max_count < 1) || (msaa_max_count > SWR_MAX_NUM_MULTISAMPLES)
|| !util_is_power_of_two(msaa_max_count)) {
|| !util_is_power_of_two_or_zero(msaa_max_count)) {
fprintf(stderr, "SWR_MSAA_MAX_COUNT invalid: %d\n", msaa_max_count);
fprintf(stderr, "must be power of 2 between 1 and %d" \
" (or 1 to disable msaa)\n",

4
src/gallium/drivers/vc4/vc4_program.c
View File

@@ -313,7 +313,7 @@ static struct qreg
ntq_get_alu_src(struct vc4_compile *c, nir_alu_instr *instr,
unsigned src)
{
assert(util_is_power_of_two(instr->dest.write_mask));
assert(util_is_power_of_two_or_zero(instr->dest.write_mask));
unsigned chan = ffs(instr->dest.write_mask) - 1;
struct qreg r = ntq_get_src(c, instr->src[src].src,
instr->src[src].swizzle[chan]);
@@ -1363,7 +1363,7 @@ ntq_emit_alu(struct vc4_compile *c, nir_alu_instr *instr)
/* We have a scalar result, so the instruction should only have a
* single channel written to.
*/
assert(util_is_power_of_two(instr->dest.write_mask));
assert(util_is_power_of_two_or_zero(instr->dest.write_mask));
ntq_store_dest(c, &instr->dest.dest,
ffs(instr->dest.write_mask) - 1, result);
}

4
src/intel/compiler/brw_fs.cpp
View File

@@ -1976,7 +1976,7 @@ struct cplx_align {
static void
cplx_align_assert_sane(struct cplx_align a)
{
assert(a.mul > 0 && util_is_power_of_two(a.mul));
assert(a.mul > 0 && util_is_power_of_two_or_zero(a.mul));
assert(a.offset < a.mul);
}
@@ -2028,7 +2028,7 @@ static void
mark_uniform_slots_read(struct uniform_slot_info *slots,
unsigned num_slots, unsigned alignment)
{
assert(alignment > 0 && util_is_power_of_two(alignment));
assert(alignment > 0 && util_is_power_of_two_or_zero(alignment));
assert(alignment <= CPLX_ALIGN_MAX_MUL);
/* We can't align a slot to anything less than the slot size */

6
src/intel/vulkan/anv_allocator.c
View File

@@ -619,7 +619,7 @@ anv_state_pool_init(struct anv_state_pool *pool,
if (result != VK_SUCCESS)
return result;
assert(util_is_power_of_two(block_size));
assert(util_is_power_of_two_or_zero(block_size));
pool->block_size = block_size;
pool->back_alloc_free_list = ANV_FREE_LIST_EMPTY;
for (unsigned i = 0; i < ANV_STATE_BUCKETS; i++) {
@@ -814,7 +814,7 @@ done:
static void
anv_state_pool_free_no_vg(struct anv_state_pool *pool, struct anv_state state)
{
assert(util_is_power_of_two(state.alloc_size));
assert(util_is_power_of_two_or_zero(state.alloc_size));
unsigned bucket = anv_state_pool_get_bucket(state.alloc_size);
if (state.offset < 0) {
@@ -1041,7 +1041,7 @@ anv_bo_pool_free(struct anv_bo_pool *pool, const struct anv_bo *bo_in)
struct bo_pool_bo_link *link = bo.map;
VG_NOACCESS_WRITE(&link->bo, bo);
assert(util_is_power_of_two(bo.size));
assert(util_is_power_of_two_or_zero(bo.size));
const unsigned size_log2 = ilog2_round_up(bo.size);
const unsigned bucket = size_log2 - 12;
assert(bucket < ARRAY_SIZE(pool->free_list));

4
src/intel/vulkan/anv_formats.c
View File

@@ -437,7 +437,7 @@ anv_get_format_plane(const struct gen_device_info *devinfo, VkFormat vk_format,
isl_format_get_layout(plane_format.isl_format);
if (tiling == VK_IMAGE_TILING_OPTIMAL &&
!util_is_power_of_two(isl_layout->bpb)) {
!util_is_power_of_two_or_zero(isl_layout->bpb)) {
/* Tiled formats *must* be power-of-two because we need up upload
* them with the render pipeline. For 3-channel formats, we fix
* this by switching them over to RGBX or RGBA formats under the
@@ -563,7 +563,7 @@ get_image_format_features(const struct gen_device_info *devinfo,
*/
if (vk_tiling == VK_IMAGE_TILING_OPTIMAL &&
base_isl_format != ISL_FORMAT_UNSUPPORTED &&
!util_is_power_of_two(isl_format_layouts[base_isl_format].bpb) &&
!util_is_power_of_two_or_zero(isl_format_layouts[base_isl_format].bpb) &&
isl_format_rgb_to_rgbx(base_isl_format) == ISL_FORMAT_UNSUPPORTED) {
flags &= ~VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BIT;
flags &= ~VK_FORMAT_FEATURE_BLIT_DST_BIT;

2
src/intel/vulkan/anv_nir_lower_multiview.c
View File

@@ -87,7 +87,7 @@ build_view_index(struct lower_multiview_state *state)
nir_umod(b, nir_load_instance_id(b),
nir_imm_int(b, _mesa_bitcount(state->view_mask)));
if (util_is_power_of_two(state->view_mask + 1)) {
if (util_is_power_of_two_or_zero(state->view_mask + 1)) {
/* If we have a full view mask, then compacted is what we want */
state->view_index = compacted;
} else {

4
src/mesa/state_tracker/st_cb_readpixels.c
View File

@@ -270,8 +270,8 @@ blit_to_staging(struct st_context *st, struct st_renderbuffer *strb,
/* We are creating a texture of the size of the region being read back.
* Need to check for NPOT texture support. */
if (!screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES) &&
(!util_is_power_of_two(width) ||
!util_is_power_of_two(height)))
(!util_is_power_of_two_or_zero(width) ||
!util_is_power_of_two_or_zero(height)))
return NULL;
/* create the destination texture */

6
src/mesa/state_tracker/st_cb_texture.c
View File

@@ -1527,9 +1527,9 @@ st_TexSubImage(struct gl_context *ctx, GLuint dims,
/* Check for NPOT texture support. */
if (!screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES) &&
(!util_is_power_of_two(src_templ.width0) ||
!util_is_power_of_two(src_templ.height0) ||
!util_is_power_of_two(src_templ.depth0))) {
(!util_is_power_of_two_or_zero(src_templ.width0) ||
!util_is_power_of_two_or_zero(src_templ.height0) ||
!util_is_power_of_two_or_zero(src_templ.depth0))) {
goto fallback;
}

12
src/util/bitscan.h
View File

@@ -31,6 +31,7 @@
#include <assert.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#if defined(_MSC_VER)
@@ -107,6 +108,17 @@ u_bit_scan64(uint64_t *mask)
return i;
}
/* Determine if an unsigned value is a power of two.
*
* \note
* Zero is treated as a power of two.
*/
static inline bool
util_is_power_of_two_or_zero(unsigned v)
{
return (v & (v - 1)) == 0;
}
/* For looping over a bitmask when you want to loop over consecutive bits
* manually, for example:
*

4
src/util/u_vector.c
View File

@@ -37,8 +37,8 @@
int
u_vector_init(struct u_vector *vector, uint32_t element_size, uint32_t size)
{
assert(util_is_power_of_two(size));
assert(element_size < size && util_is_power_of_two(element_size));
assert(util_is_power_of_two_or_zero(size));
assert(element_size < size && util_is_power_of_two_or_zero(element_size));
vector->head = 0;
vector->tail = 0;