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Add a new GPU-based scaling method to vo gl 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@22507 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2007-03-11 14:59:08 +00:00
parent c60af33716
commit c9c2f7332e
2 changed files with 33 additions and 0 deletions
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32
libvo/gl_common.c
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@ -708,6 +708,26 @@ static const char *bicub_filt_template_RECT =
"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;" \
"TEX a.r, coord, texture[%c], "textype";" \
"TEX b.r, coord2, texture[%c], "textype";" \
/* x-interpolation */ \
"LRP yuv.%c, parmx.b, a.rrrr, b.rrrr;"
static const char *bicub_x_filt_template_2D =
"MAD coord.x, fragment.texcoord[%c], {%f, %f}, {0.5, 0.5};"
"TEX parmx, coord, texture[%c], 1D;"
"MUL cdelta.xz, parmx.rrgg, {-%f, 0, %f, 0};"
BICUB_X_FILT_MAIN("2D");
static const char *bicub_x_filt_template_RECT =
"ADD coord.x, fragment.texcoord[%c], {0.5, 0.5};"
"TEX parmx, coord, texture[%c], 1D;"
"MUL cdelta.xz, parmx.rrgg, {-1, 0, 1, 0};"
BICUB_X_FILT_MAIN("RECT");
static const char *yuv_prog_template =
"PARAM ycoef = {%.4f, %.4f, %.4f};"
"PARAM ucoef = {%.4f, %.4f, %.4f};"
@ -765,6 +785,7 @@ static void create_scaler_textures(int scaler, int *texu, char *texs) {
case YUV_SCALER_BILIN:
break;
case YUV_SCALER_BICUB:
case YUV_SCALER_BICUB_X:
texs[0] = (*texu)++;
gen_spline_lookup_tex(GL_TEXTURE0 + texs[0]);
texs[0] += '0';
@ -960,6 +981,17 @@ static void add_scaler(int scaler, char **prog_pos, int *remain, char *texs,
texs[0], (float)1.0 / texh, (float)1.0 / texh,
in_tex, in_tex, in_tex, in_tex, in_tex, in_tex, out_comp);
break;
case YUV_SCALER_BICUB_X:
if (rect)
snprintf(*prog_pos, *remain, bicub_x_filt_template_RECT,
in_tex, texs[0],
in_tex, in_tex, in_tex, in_tex, out_comp);
else
snprintf(*prog_pos, *remain, bicub_x_filt_template_2D,
in_tex, (float)texw, (float)texh,
texs[0], (float)1.0 / texw, (float)1.0 / texw,
in_tex, in_tex, in_tex, in_tex, out_comp);
break;
}
*remain -= strlen(*prog_pos);
*prog_pos += strlen(*prog_pos);

1
libvo/vo_gl.c
View File

@ -894,6 +894,7 @@ static int preinit(const char *arg)
" lscale=<n>\n"
" 0: use standard bilinear scaling for luma.\n"
" 1: use improved bicubic scaling for luma.\n"
" 2: use cubic in X, linear in Y direction scaling for luma.\n"
" cscale=<n>\n"
" as lscale but for chroma (2x slower with little visible effect).\n"
" customprog=<filename>\n"