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add color conversion blitters

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This commit is contained in:
FunkyFr3sh 2022-09-09 10:44:04 +02:00
parent 8df3d5dcb4
commit 10d0477cbd
3 changed files with 143 additions and 48 deletions
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100
src/blt.c
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@ -95,8 +95,8 @@ void blt_colorkey(
{
int bytes_pp = bpp / 8;
size_t d_p = (dst_p / bytes_pp) - dst_w;
size_t s_p = (src_p / bytes_pp) - dst_w;
size_t s_a = (src_p / bytes_pp) - dst_w;
size_t d_a = (dst_p / bytes_pp) - dst_w;
src += (src_x * bytes_pp) + (src_p * src_y);
dst += (dst_x * bytes_pp) + (dst_p * dst_y);
@ -122,8 +122,8 @@ void blt_colorkey(
dst++;
}
src += s_p;
dst += d_p;
src += s_a;
dst += d_a;
}
}
else
@ -142,8 +142,8 @@ void blt_colorkey(
dst++;
}
src += s_p;
dst += d_p;
src += s_a;
dst += d_a;
}
}
}
@ -171,8 +171,8 @@ void blt_colorkey(
d++;
}
s += s_p;
d += d_p;
s += s_a;
d += d_a;
}
}
else
@ -191,8 +191,8 @@ void blt_colorkey(
d++;
}
s += s_p;
d += d_p;
s += s_a;
d += d_a;
}
}
}
@ -220,8 +220,8 @@ void blt_colorkey(
d++;
}
s += s_p;
d += d_p;
s += s_a;
d += d_a;
}
}
else
@ -240,8 +240,8 @@ void blt_colorkey(
d++;
}
s += s_p;
d += d_p;
s += s_a;
d += d_a;
}
}
}
@ -449,6 +449,78 @@ void blt_colorfill(
}
}
void blt_rgb565_to_rgba8888(
unsigned int* dst,
int dst_x,
int dst_y,
int dst_w,
int dst_h,
int dst_p,
unsigned short* src,
int src_x,
int src_y,
int src_p)
{
size_t s_a = (src_p / sizeof(unsigned short)) - dst_w;
size_t d_a = (dst_p / sizeof(unsigned int)) - dst_w;
src += (src_x * sizeof(unsigned short)) + (src_p * src_y);
dst += (dst_x * sizeof(unsigned int)) + (dst_p * dst_y);
for (int y = 0; y < dst_h; y++)
{
for (int x = 0; x < dst_w; x++)
{
unsigned short pixel = *src++;
BYTE r = ((pixel & 0xF800) >> 11) << 3;
BYTE g = ((pixel & 0x07E0) >> 5) << 2;
BYTE b = ((pixel & 0x001F)) << 3;
*dst++ = (0xFF << 24) | (b << 16) | (g << 8) | r;
}
src += s_a;
dst += d_a;
}
}
void blt_bgra8888_to_rgba8888(
unsigned int* dst,
int dst_x,
int dst_y,
int dst_w,
int dst_h,
int dst_p,
unsigned int* src,
int src_x,
int src_y,
int src_p)
{
size_t s_a = (src_p / sizeof(unsigned int)) - dst_w;
size_t d_a = (dst_p / sizeof(unsigned int)) - dst_w;
src += (src_x * sizeof(unsigned int)) + (src_p * src_y);
dst += (dst_x * sizeof(unsigned int)) + (dst_p * dst_y);
for (int y = 0; y < dst_h; y++)
{
for (int x = 0; x < dst_w; x++)
{
unsigned int pixel = *src++;
BYTE r = pixel >> 16;
BYTE g = pixel >> 8;
BYTE b = pixel;
*dst++ = (0xFF << 24) | (b << 16) | (g << 8) | r;
}
src += s_a;
dst += d_a;
}
}
void blt_stretch(
unsigned char* dst_buf,
int dst_x,