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#if defined(__SSE2__)
#include <cstring>
#include <emmintrin.h> /* for SSE2 intrinsics */
#include <xmmintrin.h> /* for _mm_shuffle_pi16 and _MM_SHUFFLE */
#include "vector_vdrawhelper.h"
// Each 32bits components of alphaChannel must be in the form 0x00AA00AA
inline static __m128i v4_byte_mul_sse2(__m128i c, __m128i a)
{
const __m128i ag_mask = _mm_set1_epi32(0xFF00FF00);
const __m128i rb_mask = _mm_set1_epi32(0x00FF00FF);
/* for AG */
__m128i v_ag = _mm_and_si128(ag_mask, c);
v_ag = _mm_srli_epi32(v_ag, 8);
v_ag = _mm_mullo_epi16(a, v_ag);
v_ag = _mm_and_si128(ag_mask, v_ag);
/* for RB */
__m128i v_rb = _mm_and_si128(rb_mask, c);
v_rb = _mm_mullo_epi16(a, v_rb);
v_rb = _mm_srli_epi32(v_rb, 8);
v_rb = _mm_and_si128(rb_mask, v_rb);
/* combine */
return _mm_add_epi32(v_ag, v_rb);
}
static inline __m128i v4_interpolate_color_sse2(__m128i a, __m128i c0,
__m128i c1)
{
const __m128i rb_mask = _mm_set1_epi32(0xFF00FF00);
const __m128i zero = _mm_setzero_si128();
__m128i a_l = a;
__m128i a_h = a;
a_l = _mm_unpacklo_epi16(a_l, a_l);
a_h = _mm_unpackhi_epi16(a_h, a_h);
__m128i a_t = _mm_slli_epi64(a_l, 32);
__m128i a_t0 = _mm_slli_epi64(a_h, 32);
a_l = _mm_add_epi32(a_l, a_t);
a_h = _mm_add_epi32(a_h, a_t0);
__m128i c0_l = c0;
__m128i c0_h = c0;
c0_l = _mm_unpacklo_epi8(c0_l, zero);
c0_h = _mm_unpackhi_epi8(c0_h, zero);
__m128i c1_l = c1;
__m128i c1_h = c1;
c1_l = _mm_unpacklo_epi8(c1_l, zero);
c1_h = _mm_unpackhi_epi8(c1_h, zero);
__m128i cl_sub = _mm_sub_epi16(c0_l, c1_l);
__m128i ch_sub = _mm_sub_epi16(c0_h, c1_h);
cl_sub = _mm_mullo_epi16(cl_sub, a_l);
ch_sub = _mm_mullo_epi16(ch_sub, a_h);
__m128i c1ls = _mm_slli_epi16(c1_l, 8);
__m128i c1hs = _mm_slli_epi16(c1_h, 8);
cl_sub = _mm_add_epi16(cl_sub, c1ls);
ch_sub = _mm_add_epi16(ch_sub, c1hs);
cl_sub = _mm_and_si128(cl_sub, rb_mask);
ch_sub = _mm_and_si128(ch_sub, rb_mask);
cl_sub = _mm_srli_epi64(cl_sub, 8);
ch_sub = _mm_srli_epi64(ch_sub, 8);
cl_sub = _mm_packus_epi16(cl_sub, cl_sub);
ch_sub = _mm_packus_epi16(ch_sub, ch_sub);
return (__m128i)_mm_shuffle_ps((__m128)cl_sub, (__m128)ch_sub, 0x44);
}
// Load src and dest vector
#define V4_FETCH_SRC_DEST \
__m128i v_src = _mm_loadu_si128((__m128i*)src); \
__m128i v_dest = _mm_load_si128((__m128i*)dest);
#define V4_FETCH_SRC __m128i v_src = _mm_loadu_si128((__m128i*)src);
#define V4_STORE_DEST _mm_store_si128((__m128i*)dest, v_src);
#define V4_SRC_DEST_LEN_INC \
dest += 4; \
src += 4; \
length -= 4;
// Multiply src color with const_alpha
#define V4_ALPHA_MULTIPLY v_src = v4_byte_mul_sse2(v_src, v_alpha);
// dest = src + dest * sia
#define V4_COMP_OP_SRC \
v_src = v4_interpolate_color_sse2(v_alpha, v_src, v_dest);
#define LOOP_ALIGNED_U1_A4(DEST, LENGTH, UOP, A4OP) \
{ \
while ((uintptr_t)DEST & 0xF && LENGTH) \
UOP \
\
while (LENGTH) \
{ \
switch (LENGTH) { \
case 3: \
case 2: \
case 1: \
UOP break; \
default: \
A4OP break; \
} \
} \
}
void memfill32(uint32_t* dest, uint32_t value, int length)
{
__m128i vector_data = _mm_set_epi32(value, value, value, value);
// run till memory alligned to 16byte memory
while (length && ((uintptr_t)dest & 0xf)) {
*dest++ = value;
length--;
}
while (length >= 32) {
_mm_store_si128((__m128i*)(dest), vector_data);
_mm_store_si128((__m128i*)(dest + 4), vector_data);
_mm_store_si128((__m128i*)(dest + 8), vector_data);
_mm_store_si128((__m128i*)(dest + 12), vector_data);
_mm_store_si128((__m128i*)(dest + 16), vector_data);
_mm_store_si128((__m128i*)(dest + 20), vector_data);
_mm_store_si128((__m128i*)(dest + 24), vector_data);
_mm_store_si128((__m128i*)(dest + 28), vector_data);
dest += 32;
length -= 32;
}
if (length >= 16) {
_mm_store_si128((__m128i*)(dest), vector_data);
_mm_store_si128((__m128i*)(dest + 4), vector_data);
_mm_store_si128((__m128i*)(dest + 8), vector_data);
_mm_store_si128((__m128i*)(dest + 12), vector_data);
dest += 16;
length -= 16;
}
if (length >= 8) {
_mm_store_si128((__m128i*)(dest), vector_data);
_mm_store_si128((__m128i*)(dest + 4), vector_data);
dest += 8;
length -= 8;
}
if (length >= 4) {
_mm_store_si128((__m128i*)(dest), vector_data);
dest += 4;
length -= 4;
}
while (length) {
*dest++ = value;
length--;
}
}
// dest = color + (dest * alpha)
inline static void copy_helper_sse2(uint32_t* dest, int length,
uint32_t color, uint32_t alpha)
{
const __m128i v_color = _mm_set1_epi32(color);
const __m128i v_a = _mm_set1_epi16(alpha);
LOOP_ALIGNED_U1_A4(dest, length,
{ /* UOP */
*dest = color + BYTE_MUL(*dest, alpha);
dest++;
length--;
},
{ /* A4OP */
__m128i v_dest = _mm_load_si128((__m128i*)dest);
v_dest = v4_byte_mul_sse2(v_dest, v_a);
v_dest = _mm_add_epi32(v_dest, v_color);
_mm_store_si128((__m128i*)dest, v_dest);
dest += 4;
length -= 4;
})
}
static void color_Source(uint32_t* dest, int length, uint32_t color,
uint32_t const_alpha)
{
if (const_alpha == 255) {
memfill32(dest, color, length);
} else {
int ialpha;
ialpha = 255 - const_alpha;
color = BYTE_MUL(color, const_alpha);
copy_helper_sse2(dest, length, color, ialpha);
}
}
static void color_SourceOver(uint32_t* dest, int length,
uint32_t color,
uint32_t const_alpha)
{
int ialpha;
if (const_alpha != 255) color = BYTE_MUL(color, const_alpha);
ialpha = 255 - vAlpha(color);
copy_helper_sse2(dest, length, color, ialpha);
}
static void src_Source(uint32_t* dest, int length, const uint32_t* src,
uint32_t const_alpha)
{
int ialpha;
if (const_alpha == 255) {
memcpy(dest, src, length * sizeof(uint32_t));
} else {
ialpha = 255 - const_alpha;
__m128i v_alpha = _mm_set1_epi32(const_alpha);
LOOP_ALIGNED_U1_A4(dest, length,
{ /* UOP */
*dest = interpolate_pixel(*src, const_alpha,
*dest, ialpha);
dest++;
src++;
length--;
},
{/* A4OP */
V4_FETCH_SRC_DEST V4_COMP_OP_SRC V4_STORE_DEST
V4_SRC_DEST_LEN_INC})
}
}
void RenderFuncTable::sse()
{
updateColor(BlendMode::Src , color_Source);
updateColor(BlendMode::SrcOver , color_SourceOver);
updateSrc(BlendMode::Src , src_Source);
}
#endif
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