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freetype2
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Code Issues 4 Releases Wiki Activity

lkw

This commit is contained in:
Anurag Thakur 2022-10-06 00:56:28 +05:30
parent 0b682c5417
commit c03591c48a
2 changed files with 90 additions and 63 deletions
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149
src/dense/ftdense.c
View File

@ -58,6 +58,19 @@ dense_line_to( const FT_Vector* to, dense_worker* worker )
dense_move_to( to, worker );
return 0;
}
FT26D6 max(FT26D6 x, FT26D6 y){
if(x > y)
return x;
return y;
}
FT26D6 min(FT26D6 x, FT26D6 y){
if(x < y)
return x;
return y;
}
void
swap( long int* a, long int* b )
{
@ -72,33 +85,39 @@ dense_render_line( dense_worker* worker, TPos tox, TPos toy )
{
// printf("line from: %d, %d to %d, %d\n", worker->prev_x, worker->prev_y,
// to_x, to_y);
float from_x = worker->prev_x;
float from_y = worker->prev_y;
if ( from_y == toy )
FT26D6 fx = worker->prev_x>>2;
FT26D6 fy = worker->prev_y>>2;
// float from_x = fx;
// float from_y = fy;
FT26D6 from_x = fx;
FT26D6 from_y = fy;
// from_x /= 64.0;
// from_y /= 64.0;
FT26D6 tx = tox>>2;
FT26D6 ty = toy>>2;
if ( fy == ty )
return;
// aP0.m_x -= worker->m_origin_x;
// aP0.m_y -= worker->m_origin_y;
// aP1.m_x -= worker->m_origin_x;
// aP1.m_y -= worker->m_origin_y;
// float to_x = tx / 64.0;
// float to_y = ty / 64.0;
FT26D6 to_x = tx;
FT26D6 to_y = ty;
// from_x = TRUNC( (int)from_x );
// from_y = TRUNC( (int)from_y );
// to_x = TRUNC( (int)to_x );
// to_y = TRUNC( (int)to_y );
from_x /= 256.0;
from_y /= 256.0;
float to_x = tox / 256.0;
float to_y = toy / 256.0;
//printf("line from: %f, %f to %f, %f\n", from_x, from_y, to_x, to_y);
float dir;
if ( from_y < to_y )
dir = 1;
else
int dir = 1;
if ( from_y >= to_y )
{
dir = -1;
swap( &from_x, &to_x );
@ -106,32 +125,38 @@ dense_render_line( dense_worker* worker, TPos tox, TPos toy )
}
// Clip to the height.
if ( from_y >= worker->m_h || to_y <= 0 )
if ( from_y >= worker->m_h<<6 || to_y <= 0 )
return;
float dxdy = ( to_x - from_x ) / (float)( to_y - from_y );
//float dxdy = ( to_x - from_x ) / (float)( to_y - from_y );
FT26D6 deltax,deltay;
deltax = to_x - from_x;
deltay = to_y - from_y;
if ( from_y < 0 )
{
from_x -= from_y * dxdy;
from_x -= from_y * deltax/deltay;
from_y = 0;
}
if ( to_y > worker->m_h )
// TODO: test, imp line
if ( to_y > worker->m_h<<6 )
{
to_x -= ( to_y - worker->m_h ) * dxdy;
to_y = (float)worker->m_h;
to_x -= (( to_y - worker->m_h<<6 ) * deltax/deltay);
to_y = worker->m_h<<6;
}
float x = from_x;
int y0 = (int)from_y;
int y_limit = (int)ceil( to_y );
float x = from_x/64.0;
int y0 = from_y>>6;
int y_limit = (to_y + 0x3f)>>6;
float* m_a = worker->m_a;
for ( int y = y0; y < y_limit; y++ )
{
// printf("y is %d\n", y);
int linestart = y * worker->m_w;
float dy = fmin( y + 1.0f, to_y ) - fmax( (float)y, from_y );
float xnext = x + dxdy * dy;
float dy = (min( (y + 1)<<6, to_y ) - max( y<<6, from_y ))/64.0;
float xnext = x + dy * deltax/deltay;
float d = dy * dir;
float x0, x1;
@ -374,39 +399,39 @@ dense_render_glyph( dense_worker* worker, const FT_Bitmap* target )
unsigned char* dest = target->buffer;
unsigned char* dest_end = target->buffer + worker->m_w * worker->m_h;
__m128 offset = _mm_setzero_ps();
__m128i mask = _mm_set1_epi32(0x0c080400);
__m128 sign_mask = _mm_set1_ps(-0.f);
for (int i = 0; i < worker->m_h*worker->m_w; i += 4) {
__m128 x = _mm_load_ps(&source[i]);
x = _mm_add_ps(x, _mm_castsi128_ps(_mm_slli_si128(_mm_castps_si128(x), 4)));
x = _mm_add_ps(x, _mm_shuffle_ps(_mm_setzero_ps(), x, 0x40));
x = _mm_add_ps(x, offset);
__m128 y = _mm_andnot_ps(sign_mask, x); // fabs(x)
y = _mm_min_ps(y, _mm_set1_ps(1.0f));
y = _mm_mul_ps(y, _mm_set1_ps(255.0f));
__m128i z = _mm_cvtps_epi32(y);
z = _mm_shuffle_epi8(z, mask);
_mm_store_ss((float *)&dest[i], (__m128)z);
offset = _mm_shuffle_ps(x, x, _MM_SHUFFLE(3, 3, 3, 3));
}
// float value = 0.0f;
// while ( dest < dest_end )
// {
// value += *source++;
// if ( value > 0.0f )
// {
// int n = (int)( fabs( value ) * 255.0f + 0.5f );
// if ( n > 255 )
// n = 255;
// *dest = (unsigned char)n;
// }
// else
// *dest = 0;
// dest++;
// __m128 offset = _mm_setzero_ps();
// __m128i mask = _mm_set1_epi32(0x0c080400);
// __m128 sign_mask = _mm_set1_ps(-0.f);
// for (int i = 0; i < worker->m_h*worker->m_w; i += 4) {
// __m128 x = _mm_load_ps(&source[i]);
// x = _mm_add_ps(x, _mm_castsi128_ps(_mm_slli_si128(_mm_castps_si128(x), 4)));
// x = _mm_add_ps(x, _mm_shuffle_ps(_mm_setzero_ps(), x, 0x40));
// x = _mm_add_ps(x, offset);
// __m128 y = _mm_andnot_ps(sign_mask, x); // fabs(x)
// y = _mm_min_ps(y, _mm_set1_ps(1.0f));
// y = _mm_mul_ps(y, _mm_set1_ps(255.0f));
// __m128i z = _mm_cvtps_epi32(y);
// z = _mm_shuffle_epi8(z, mask);
// _mm_store_ss((float *)&dest[i], (__m128)z);
// offset = _mm_shuffle_ps(x, x, _MM_SHUFFLE(3, 3, 3, 3));
// }
float value = 0.0f;
while ( dest < dest_end )
{
value += *source++;
if ( value > 0.0f )
{
int n = (int)( fabs( value ) * 255.0f + 0.5f );
if ( n > 255 )
n = 255;
*dest = (unsigned char)n;
}
else
*dest = 0;
dest++;
}
free(worker->m_a);
return error;
}

4
src/dense/ftdense.h
View File

@ -40,7 +40,9 @@ extern "C"
{
#endif
typedef long TPos;
typedef signed long TPos;
typedef signed long FT26D6;
typedef signed long FT20D12;
typedef struct
{