isnan(out_x1) || isnan(out_x2) ||
isnan(out_y1) || isnan(out_y2)) return 1;
- if(in_x1 < 0) in_x1 = 0;
- if(in_y1 < 0) in_y1 = 0;
- if(in_x2 > input->get_w()) in_x2 = input->get_w();
- if(in_y2 > input->get_h()) in_y2 = input->get_h();
- if(out_x1 < 0) out_x1 = 0;
- if(out_y1 < 0) out_y1 = 0;
- if(out_x2 > output->get_w()) out_x2 = output->get_w();
- if(out_y2 > output->get_h()) out_y2 = output->get_h();
+ if( in_x2 <= in_x1 || in_y2 <= in_y1 ) return 1;
+ if( out_x2 <= out_x1 || out_y2 <= out_y1 ) return 1;
float xscale = (out_x2 - out_x1) / (in_x2 - in_x1);
float yscale = (out_y2 - out_y1) / (in_y2 - in_y1);
+ int in_w = input->get_w(), in_h = input->get_h();
+ int out_w = output->get_w(), out_h = output->get_h();
+
+ if( in_x1 < 0 ) {
+ out_x1 -= in_x1 * xscale;
+ in_x1 = 0;
+ }
+ if( in_x2 > in_w ) {
+ out_x2 -= (in_x2 - in_w) * xscale;
+ in_x2 = in_w;
+ }
+ if( in_y1 < 0 ) {
+ out_y1 -= in_y1 * yscale;
+ in_y1 = 0;
+ }
+ if( in_y2 > in_h ) {
+ out_y2 -= (in_y2 - in_h) * yscale;
+ in_y2 = in_h;
+ }
+
+ if( out_x1 < 0 ) {
+ in_x1 -= out_x1 / xscale;
+ out_x1 = 0;
+ }
+ if( out_x2 > out_w ) {
+ in_x2 -= (out_x2 - out_w) / xscale;
+ out_x2 = out_w;
+ }
+ if( out_y1 < 0 ) {
+ in_y1 -= out_y1 / yscale;
+ out_y1 = 0;
+ }
+ if( out_y2 > out_h ) {
+ in_y2 -= (out_y2 - out_h) / yscale;
+ out_y2 = out_h;
+ }
+
+ if( in_x1 < 0) in_x1 = 0;
+ if( in_y1 < 0) in_y1 = 0;
+ if( in_x2 > in_w ) in_x2 = in_w;
+ if( in_y2 > in_h ) in_y2 = in_h;
+ if( out_x1 < 0) out_x1 = 0;
+ if( out_y1 < 0) out_y1 = 0;
+ if( out_x2 > out_w ) out_x2 = out_w;
+ if( out_y2 > out_h ) out_y2 = out_h;
+
+ if( in_x2 <= in_x1 || in_y2 <= in_y1 ) return 1;
+ if( out_x2 <= out_x1 || out_y2 <= out_y1 ) return 1;
+ xscale = (out_x2 - out_x1) / (in_x2 - in_x1);
+ yscale = (out_y2 - out_y1) / (in_y2 - in_y1);
/* don't interpolate integer translations, or scale no-ops */
if(xscale == 1. && yscale == 1. &&
#define ALPHA3_BLEND(FN, typ, inp, out, mx, ofs, rnd) \
typ inp0 = (typ)inp[0], inp1 = (typ)inp[1] - ofs; \
- typ inp2 = (typ)inp[2] - ofs, inp3 = fade * mx + rnd; \
+ typ inp2 = (typ)inp[2] - ofs, inp3 = mx; \
typ out0 = (typ)out[0], out1 = (typ)out[1] - ofs; \
typ out2 = (typ)out[2] - ofs, out3 = mx; \
r = COLOR_##FN(mx, inp0, inp3, out0, out3); \
#define ALPHA4_BLEND(FN, typ, inp, out, mx, ofs, rnd) \
typ inp0 = (typ)inp[0], inp1 = (typ)inp[1] - ofs; \
- typ inp2 = (typ)inp[2] - ofs, inp3 = (typ)inp[3] * fade + rnd; \
+ typ inp2 = (typ)inp[2] - ofs, inp3 = inp[3]; \
typ out0 = (typ)out[0], out1 = (typ)out[1] - ofs; \
typ out2 = (typ)out[2] - ofs, out3 = out[3]; \
r = COLOR_##FN(mx, inp0, inp3, out0, out3); \
out[3] = aclip(a, mx)
#define XBLEND(FN, temp_type, type, max, components, chroma_offset, round) { \
- temp_type opcty = alpha * max + round, trnsp = max - opcty; \
+ temp_type opcty = fade * max + round, trnsp = max - opcty; \
type** output_rows = (type**)output->get_rows(); \
type** input_rows = (type**)input->get_rows(); \
ix *= components; ox *= components; \
VFrame *output = engine->output;
VFrame *input = engine->input;
int mode = engine->mode;
- float fade = engine->alpha;
- float alpha =
+ float fade =
BC_CModels::has_alpha(input->get_color_model()) &&
mode == TRANSFER_REPLACE ? 1.f : engine->alpha;
/* Nearest Neighbor scale / translate / blend ********************/
#define XBLEND_3NN(FN, temp_type, type, max, components, chroma_offset, round) { \
- temp_type opcty = alpha * max + round, trnsp = max - opcty; \
+ temp_type opcty = fade * max + round, trnsp = max - opcty; \
type** output_rows = (type**)output->get_rows(); \
type** input_rows = (type**)input->get_rows(); \
ox *= components; \
VFrame *output = engine->output;
VFrame *input = engine->input;
int mode = engine->mode;
- float fade = engine->alpha;
- float alpha =
+ float fade =
BC_CModels::has_alpha(input->get_color_model()) &&
mode == TRANSFER_REPLACE ? 1.f : engine->alpha;
#define XSAMPLE(FN, temp_type, type, max, components, chroma_offset, round) { \
float temp[oh*components]; \
- temp_type opcty = alpha * max + round, trnsp = max - opcty; \
+ temp_type opcty = fade * max + round, trnsp = max - opcty; \
type **output_rows = (type**)voutput->get_rows() + o1i; \
type **input_rows = (type**)vinput->get_rows(); \
\
VFrame *voutput = engine->output;
VFrame *vinput = engine->input;
int mode = engine->mode;
- float fade = engine->alpha;
- float alpha =
+ float fade =
BC_CModels::has_alpha(vinput->get_color_model()) &&
mode == TRANSFER_REPLACE ? 1.f : engine->alpha;