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Diffstat (limited to 'app/gegl/gimp-gegl-loops-sse2.c')
| -rw-r--r-- | app/gegl/gimp-gegl-loops-sse2.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/app/gegl/gimp-gegl-loops-sse2.c b/app/gegl/gimp-gegl-loops-sse2.c new file mode 100644 index 0000000..b9bf3ae --- /dev/null +++ b/app/gegl/gimp-gegl-loops-sse2.c @@ -0,0 +1,127 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimp-gegl-loops-sse2.c + * Copyright (C) 2012 Michael Natterer <mitch@gimp.org> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <string.h> + +#include <cairo.h> +#include <gdk-pixbuf/gdk-pixbuf.h> +#include <gegl.h> + +#include "gimp-gegl-types.h" + +#include "gimp-gegl-loops-sse2.h" + + +#if COMPILE_SSE2_INTRINISICS + +#include <emmintrin.h> + + +/* helper function of gimp_gegl_smudge_with_paint_process_sse2() + * src and dest can be the same address + */ +static inline void +gimp_gegl_smudge_with_paint_blend_sse2 (const gfloat *src1, + gfloat src1_rate, + const gfloat *src2, + gfloat src2_rate, + gfloat *dest, + gboolean no_erasing_src2) +{ + /* 2017/4/13 shark0r : According to my test, SSE decreases about 25% + * execution time + */ + + __m128 v_src1 = _mm_loadu_ps (src1); + __m128 v_src2 = _mm_loadu_ps (src2); + __m128 *v_dest = (__v4sf *) dest; + + gfloat orginal_src2_alpha; + gfloat src1_alpha; + gfloat src2_alpha; + gfloat result_alpha; + + orginal_src2_alpha = v_src2[3]; + src1_alpha = src1_rate * v_src1[3]; + src2_alpha = src2_rate * orginal_src2_alpha; + result_alpha = src1_alpha + src2_alpha; + + if (result_alpha == 0) + { + *v_dest = _mm_set1_ps (0); + return; + } + + *v_dest = (v_src1 * _mm_set1_ps (src1_alpha) + + v_src2 * _mm_set1_ps (src2_alpha)) / + _mm_set1_ps (result_alpha); + + if (no_erasing_src2) + { + result_alpha = MAX (result_alpha, orginal_src2_alpha); + } + + dest[3] = result_alpha; +} + +/* helper function of gimp_gegl_smudge_with_paint() + * + * note that it's the caller's responsibility to verify that the buffers are + * properly aligned + */ +void +gimp_gegl_smudge_with_paint_process_sse2 (gfloat *accum, + const gfloat *canvas, + gfloat *paint, + gint count, + const gfloat *brush_color, + gfloat brush_a, + gboolean no_erasing, + gfloat flow, + gfloat rate) +{ + while (count--) + { + /* blend accum_buffer and canvas_buffer to accum_buffer */ + gimp_gegl_smudge_with_paint_blend_sse2 (accum, rate, canvas, 1 - rate, + accum, no_erasing); + + /* blend accum_buffer and brush color/pixmap to paint_buffer */ + if (brush_a == 0) /* pure smudge */ + { + memcpy (paint, accum, sizeof (gfloat) * 4); + } + else + { + const gfloat *src1 = brush_color ? brush_color : paint; + + gimp_gegl_smudge_with_paint_blend_sse2 (src1, flow, accum, 1 - flow, + paint, no_erasing); + } + + accum += 4; + canvas += 4; + paint += 4; + } +} + +#endif /* COMPILE_SSE2_INTRINISICS */ |