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Diffstat (limited to 'app/operations/layer-modes/gimpoperationnormal.c')
| -rw-r--r-- | app/operations/layer-modes/gimpoperationnormal.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/app/operations/layer-modes/gimpoperationnormal.c b/app/operations/layer-modes/gimpoperationnormal.c new file mode 100644 index 0000000..9bd8705 --- /dev/null +++ b/app/operations/layer-modes/gimpoperationnormal.c @@ -0,0 +1,266 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimpoperationnormalmode.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 <gio/gio.h> +#include <gegl-plugin.h> + +#include "libgimpbase/gimpbase.h" + +#include "../operations-types.h" + +#include "gimpoperationnormal.h" + + +G_DEFINE_TYPE (GimpOperationNormal, gimp_operation_normal, + GIMP_TYPE_OPERATION_LAYER_MODE) + + +static const gchar* reference_xml = "<?xml version='1.0' encoding='UTF-8'?>" +"<gegl>" +"<node operation='gimp:normal'>" +" <node operation='gegl:load'>" +" <params>" +" <param name='path'>blending-test-B.png</param>" +" </params>" +" </node>" +"</node>" +"<node operation='gegl:load'>" +" <params>" +" <param name='path'>blending-test-A.png</param>" +" </params>" +"</node>" +"</gegl>"; + + +static void +gimp_operation_normal_class_init (GimpOperationNormalClass *klass) +{ + GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass); + GimpOperationLayerModeClass *layer_mode_class = GIMP_OPERATION_LAYER_MODE_CLASS (klass); + + gegl_operation_class_set_keys (operation_class, + "name", "gimp:normal", + "description", "GIMP normal mode operation", + "reference-image", "normal-mode.png", + "reference-composition", reference_xml, + NULL); + + layer_mode_class->process = gimp_operation_normal_process; + +#if COMPILE_SSE2_INTRINISICS + if (gimp_cpu_accel_get_support() & GIMP_CPU_ACCEL_X86_SSE2) + layer_mode_class->process = gimp_operation_normal_process_sse2; +#endif /* COMPILE_SSE2_INTRINISICS */ + +#if COMPILE_SSE4_1_INTRINISICS + if (gimp_cpu_accel_get_support() & GIMP_CPU_ACCEL_X86_SSE4_1) + layer_mode_class->process = gimp_operation_normal_process_sse4; +#endif /* COMPILE_SSE4_1_INTRINISICS */ +} + +static void +gimp_operation_normal_init (GimpOperationNormal *self) +{ +} + +gboolean +gimp_operation_normal_process (GeglOperation *op, + void *in_p, + void *layer_p, + void *mask_p, + void *out_p, + glong samples, + const GeglRectangle *roi, + gint level) +{ + GimpOperationLayerMode *layer_mode = (gpointer) op; + gfloat *in = in_p; + gfloat *out = out_p; + gfloat *layer = layer_p; + gfloat *mask = mask_p; + gfloat opacity = layer_mode->opacity; + const gboolean has_mask = mask != NULL; + + switch (layer_mode->composite_mode) + { + case GIMP_LAYER_COMPOSITE_UNION: + case GIMP_LAYER_COMPOSITE_AUTO: + while (samples--) + { + gfloat layer_alpha; + + layer_alpha = layer[ALPHA] * opacity; + if (has_mask) + layer_alpha *= *mask; + + out[ALPHA] = layer_alpha + in[ALPHA] - layer_alpha * in[ALPHA]; + + if (out[ALPHA]) + { + gfloat layer_weight = layer_alpha / out[ALPHA]; + gfloat in_weight = 1.0f - layer_weight; + gint b; + + for (b = RED; b < ALPHA; b++) + { + out[b] = layer[b] * layer_weight + in[b] * in_weight; + } + } + else + { + gint b; + + for (b = RED; b < ALPHA; b++) + { + out[b] = in[b]; + } + } + + in += 4; + layer += 4; + out += 4; + + if (has_mask) + mask++; + } + break; + + case GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP: + while (samples--) + { + gfloat layer_alpha; + + layer_alpha = layer[ALPHA] * opacity; + if (has_mask) + layer_alpha *= *mask; + + out[ALPHA] = in[ALPHA]; + + if (out[ALPHA]) + { + gint b; + + for (b = RED; b < ALPHA; b++) + { + out[b] = in[b] + (layer[b] - in[b]) * layer_alpha; + } + } + else + { + gint b; + + for (b = RED; b < ALPHA; b++) + { + out[b] = in[b]; + } + } + + in += 4; + layer += 4; + out += 4; + + if (has_mask) + mask++; + } + break; + + case GIMP_LAYER_COMPOSITE_CLIP_TO_LAYER: + while (samples--) + { + gfloat layer_alpha; + + layer_alpha = layer[ALPHA] * opacity; + if (has_mask) + layer_alpha *= *mask; + + out[ALPHA] = layer_alpha; + + if (out[ALPHA]) + { + gint b; + + for (b = RED; b < ALPHA; b++) + { + out[b] = layer[b]; + } + } + else + { + gint b; + + for (b = RED; b < ALPHA; b++) + { + out[b] = in[b]; + } + } + + in += 4; + layer += 4; + out += 4; + + if (has_mask) + mask++; + } + break; + + case GIMP_LAYER_COMPOSITE_INTERSECTION: + while (samples--) + { + gfloat layer_alpha; + + layer_alpha = layer[ALPHA] * opacity; + if (has_mask) + layer_alpha *= *mask; + + out[ALPHA] = in[ALPHA] * layer_alpha; + + if (out[ALPHA]) + { + gint b; + + for (b = RED; b < ALPHA; b++) + { + out[b] = layer[b]; + } + } + else + { + gint b; + + for (b = RED; b < ALPHA; b++) + { + out[b] = in[b]; + } + } + + in += 4; + layer += 4; + out += 4; + + if (has_mask) + mask++; + } + break; + } + + return TRUE; +} |