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Add a bicubic scaler that needs a lot more instruction but no

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extra texture lookup


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@24338 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2007-09-04 10:46:31 +00:00
parent 527d293139
commit dc804a9536
2 changed files with 42 additions and 0 deletions

40
libvo/gl_common.c
View File

@ -708,6 +708,34 @@ static const char *bicub_filt_template_RECT =
"MUL cdelta.yw, parmy.rrgg, {0, -1, 0, 1};"
BICUB_FILT_MAIN("RECT");
#define CALCWEIGHTS(t, s) \
"MAD "t", {-0.5, 0.1666, 0.3333, -0.3333}, "s", {1, 0, -0.5, 0.5};" \
"MAD "t", "t", "s", {0, 0, -0.5, 0.5};" \
"MAD "t", "t", "s", {-0.6666, 0, 0.8333, 0.1666};" \
"RCP a.x, "t".z;" \
"RCP a.y, "t".w;" \
"MAD "t".xy, "t".xyxy, a.xyxy, {1, 1, 0, 0};" \
"ADD "t".x, "t".xxxx, "s";" \
"SUB "t".y, "t".yyyy, "s";"
static const char *bicub_notex_filt_template_2D =
"MAD coord.xy, fragment.texcoord[%c], {%f, %f}, {0.5, 0.5};"
"FRC coord.xy, coord.xyxy;"
CALCWEIGHTS("parmx", "coord.xxxx")
"MUL cdelta.xz, parmx.rrgg, {-%f, 0, %f, 0};"
CALCWEIGHTS("parmy", "coord.yyyy")
"MUL cdelta.yw, parmy.rrgg, {0, -%f, 0, %f};"
BICUB_FILT_MAIN("2D");
static const char *bicub_notex_filt_template_RECT =
"ADD coord, fragment.texcoord[%c], {0.5, 0.5};"
"FRC coord.xy, coord.xyxy;"
CALCWEIGHTS("parmx", "coord.xxxx")
"MUL cdelta.xz, parmx.rrgg, {-1, 0, 1, 0};"
CALCWEIGHTS("parmy", "coord.yyyy")
"MUL cdelta.yw, parmy.rrgg, {0, -1, 0, 1};"
BICUB_FILT_MAIN("RECT");
#define BICUB_X_FILT_MAIN(textype) \
"ADD coord, fragment.texcoord[%c].xyxy, cdelta.xyxw;" \
"ADD coord2, fragment.texcoord[%c].xyxy, cdelta.zyzw;" \
@ -992,6 +1020,18 @@ static void add_scaler(int scaler, char **prog_pos, int *remain, char *texs,
texs[0], (float)1.0 / texw, (float)1.0 / texw,
in_tex, in_tex, in_tex, in_tex, out_comp);
break;
case YUV_SCALER_BICUB_NOTEX:
if (rect)
snprintf(*prog_pos, *remain, bicub_notex_filt_template_RECT,
in_tex,
in_tex, in_tex, in_tex, in_tex, in_tex, in_tex, out_comp);
else
snprintf(*prog_pos, *remain, bicub_notex_filt_template_2D,
in_tex, (float)texw, (float)texh,
(float)1.0 / texw, (float)1.0 / texw,
(float)1.0 / texh, (float)1.0 / texh,
in_tex, in_tex, in_tex, in_tex, in_tex, in_tex, out_comp);
break;
}
*remain -= strlen(*prog_pos);
*prog_pos += strlen(*prog_pos);

2
libvo/gl_common.h
View File

@ -241,6 +241,8 @@ int loadGPUProgram(GLenum target, char *prog);
#define YUV_SCALER_BICUB 1
//! use cubic scaling in X and normal linear scaling in Y direction
#define YUV_SCALER_BICUB_X 2
//! use cubic scaling without additional lookup texture
#define YUV_SCALER_BICUB_NOTEX 3
//! mask for conversion type
#define YUV_CONVERSION_MASK 0xF
//! mask for scaler type