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Add conv rgb565 to ABGR8888 by m4xw

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This commit is contained in:
twinaphex 2018-09-12 20:04:52 +02:00
parent cc8b458ee3
commit 19b4ef3b2c
3 changed files with 66 additions and 0 deletions
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59
libretro-common/gfx/scaler/pixconv.c
View File

@ -254,6 +254,65 @@ void conv_rgb565_argb8888(void *output_, const void *input_,
}
}
void conv_rgb565_abgr8888(void *output_, const void *input_,
int width, int height,
int out_stride, int in_stride)
{
int h;
const uint16_t *input = (const uint16_t*)input_;
uint32_t *output = (uint32_t*)output_;
#if defined(__SSE2__)
const __m128i pix_mask_r = _mm_set1_epi16(0x1f << 10);
const __m128i pix_mask_g = _mm_set1_epi16(0x3f << 5);
const __m128i pix_mask_b = _mm_set1_epi16(0x1f << 5);
const __m128i mul16_r = _mm_set1_epi16(0x0210);
const __m128i mul16_g = _mm_set1_epi16(0x2080);
const __m128i mul16_b = _mm_set1_epi16(0x4200);
const __m128i a = _mm_set1_epi16(0x00ff);
int max_width = width - 7;
#endif
for (h = 0; h < height;
h++, output += out_stride >> 2, input += in_stride >> 1)
{
int w = 0;
#if defined(__SSE2__)
for (; w < max_width; w += 8)
{
__m128i res_lo, res_hi;
__m128i res_lo_bg, res_hi_bg, res_lo_ra, res_hi_ra;
const __m128i in = _mm_loadu_si128((const __m128i*)(input + w));
__m128i r = _mm_and_si128(_mm_srli_epi16(in, 1), pix_mask_r);
__m128i g = _mm_and_si128(in, pix_mask_g);
__m128i b = _mm_and_si128(_mm_slli_epi16(in, 5), pix_mask_b);
r = _mm_mulhi_epi16(r, mul16_r);
g = _mm_mulhi_epi16(g, mul16_g);
b = _mm_mulhi_epi16(b, mul16_b);
res_lo_bg = _mm_unpacklo_epi8(b, g);
res_hi_bg = _mm_unpackhi_epi8(b, g);
res_lo_ra = _mm_unpacklo_epi8(r, a);
res_hi_ra = _mm_unpackhi_epi8(r, a);
res_lo = _mm_or_si128(res_lo_bg,
_mm_slli_si128(res_lo_ra, 2));
res_hi = _mm_or_si128(res_hi_bg,
_mm_slli_si128(res_hi_ra, 2));
_mm_storeu_si128((__m128i*)(output + w + 0), res_lo);
_mm_storeu_si128((__m128i*)(output + w + 4), res_hi);
}
#endif
for (; w < width; w++)
{
uint32_t col = input[w];
uint32_t r = (col >> 11) & 0x1f;
uint32_t g = (col >> 5) & 0x3f;
uint32_t b = (col >> 0) & 0x1f;
r = (r << 3) | (r >> 2);
g = (g << 2) | (g >> 4);
b = (b << 3) | (b >> 2);
output[w] = (0xffu << 24) | (b << 16) | (g << 8) | (r << 0);
}
}
}
void conv_argb8888_rgba4444(void *output_, const void *input_,
int width, int height,
int out_stride, int in_stride)

3
libretro-common/gfx/scaler/scaler.c
View File

@ -119,6 +119,9 @@ bool scaler_ctx_gen_filter(struct scaler_ctx *ctx)
case SCALER_FMT_ARGB8888:
ctx->direct_pixconv = conv_rgb565_argb8888;
break;
case SCALER_FMT_ABGR8888:
ctx->direct_pixconv = conv_rgb565_abgr8888;
break;
case SCALER_FMT_BGR24:
ctx->direct_pixconv = conv_rgb565_bgr24;
break;

4
libretro-common/include/gfx/scaler/pixconv.h
View File

@ -42,6 +42,10 @@ void conv_rgb565_0rgb1555(void *output, const void *input,
int width, int height,
int out_stride, int in_stride);
void conv_rgb565_abgr8888(void *output, const void *input,
int width, int height,
int out_stride, int in_stride);
void conv_rgb565_argb8888(void *output, const void *input,
int width, int height,
int out_stride, int in_stride);