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[common] replace Common::BitCast with libc++ provided one (#2774)

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Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2774
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: crueter <crueter@eden-emu.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
This commit is contained in:
lizzie 2025-10-22 02:56:28 +02:00 • committed by crueter
parent 6ff043c4fb
commit 992bae4e2a
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GPG key ID: 425ACD2D4830EBC6
25 changed files with 152 additions and 151 deletions
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20
src/video_core/engines/sw_blitter/converter.cpp
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@ -8,9 +8,9 @@
#include <cmath>
#include <span>
#include <unordered_map>
#include <bit>
#include <numeric>
#include "common/assert.h"
#include "common/bit_cast.h"
#include "video_core/engines/sw_blitter/converter.h"
#include "video_core/surface.h"
#include "video_core/textures/decoders.h"
@ -696,21 +696,21 @@ private:
return shifted_value >> shift_amount;
};
const auto force_to_fp16 = [](f32 base_value) {
u32 tmp = Common::BitCast<u32>(base_value);
u32 tmp = std::bit_cast<u32>(base_value);
constexpr size_t fp32_mantissa_bits = 23;
constexpr size_t fp16_mantissa_bits = 10;
constexpr size_t mantissa_mask =
~((1ULL << (fp32_mantissa_bits - fp16_mantissa_bits)) - 1ULL);
tmp = tmp & static_cast<u32>(mantissa_mask);
// TODO: force the exponent within the range of half float. Not needed in UNORM / SNORM
return Common::BitCast<f32>(tmp);
return std::bit_cast<f32>(tmp);
};
const auto from_fp_n = [&sign_extend](u32 base_value, size_t bits, size_t mantissa) {
constexpr size_t fp32_mantissa_bits = 23;
size_t shift_towards = fp32_mantissa_bits - mantissa;
const u32 new_value =
static_cast<u32>(sign_extend(base_value, bits) << shift_towards) & (~(1U << 31));
return Common::BitCast<f32>(new_value);
return std::bit_cast<f32>(new_value);
};
const auto calculate_snorm = [&]() {
return static_cast<f32>(
@ -740,11 +740,11 @@ private:
out_component = force_to_fp16(out_component);
} else if constexpr (component_types[which_component] == ComponentType::FLOAT) {
if constexpr (component_sizes[which_component] == 32) {
out_component = Common::BitCast<f32>(value);
out_component = std::bit_cast<f32>(value);
} else if constexpr (component_sizes[which_component] == 16) {
static constexpr u32 sign_mask = 0x8000;
static constexpr u32 mantissa_mask = 0x8000;
out_component = Common::BitCast<f32>(((value & sign_mask) << 16) |
out_component = std::bit_cast<f32>(((value & sign_mask) << 16) |
(((value & 0x7c00) + 0x1C000) << 13) |
((value & mantissa_mask) << 13));
} else {
@ -774,7 +774,7 @@ private:
};
const auto to_fp_n = [](f32 base_value, size_t bits, size_t mantissa) {
constexpr size_t fp32_mantissa_bits = 23;
u32 tmp_value = Common::BitCast<u32>((std::max)(base_value, 0.0f));
u32 tmp_value = std::bit_cast<u32>((std::max)(base_value, 0.0f));
size_t shift_towards = fp32_mantissa_bits - mantissa;
return tmp_value >> shift_towards;
};
@ -802,13 +802,13 @@ private:
insert_to_word(tmp_word);
} else if constexpr (component_types[which_component] == ComponentType::FLOAT) {
if constexpr (component_sizes[which_component] == 32) {
u32 tmp_word = Common::BitCast<u32>(in_component);
u32 tmp_word = std::bit_cast<u32>(in_component);
insert_to_word(tmp_word);
} else if constexpr (component_sizes[which_component] == 16) {
static constexpr u32 sign_mask = 0x8000;
static constexpr u32 mantissa_mask = 0x03ff;
static constexpr u32 exponent_mask = 0x7c00;
const u32 tmp_word = Common::BitCast<u32>(in_component);
const u32 tmp_word = std::bit_cast<u32>(in_component);
const u32 half = ((tmp_word >> 16) & sign_mask) |
((((tmp_word & 0x7f800000) - 0x38000000) >> 13) & exponent_mask) |
((tmp_word >> 13) & mantissa_mask);