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/* General-purpose fragment shader for all operations in Evas.
* This file can either be used directly by evas at runtime to
* generate its shaders with the appropriate #defines, or passed
* through cpp first (in which case the precision must be manually added).
*/
FRAGMENT_SHADER
#define M_PI 3.141592653589793238462643383279502884
#define M_PI_2 1.570796326794896619231321691639751442
#ifndef SHD_NOMUL
varying vec4 col;
#endif
#ifdef SHD_EXTERNAL
uniform SAMPLER_EXTERNAL_OES tex;
varying vec2 tex_c;
#elif defined(SHD_TEX)
uniform sampler2D tex;
varying vec2 tex_c;
#endif
#if defined(SHD_NV12) || defined(SHD_YUY2)
uniform sampler2D texuv;
varying vec2 tex_c2;
#endif
#if defined(SHD_YUV)
uniform sampler2D texu;
uniform sampler2D texv;
varying vec2 tex_c2;
varying vec2 tex_c3;
#endif
#ifdef SHD_TEXA
uniform sampler2D texa;
varying vec2 tex_a;
#endif
#if defined(SHD_SAM12) || defined(SHD_SAM21) || defined(SHD_SAM22)
varying vec4 div_s;
# if defined(SHD_SAM12) || defined(SHD_SAM21)
varying vec2 tex_s[2];
# else
varying vec2 tex_s[4];
# endif
#endif
#ifdef SHD_MASK
uniform sampler2D texm;
varying vec2 tex_m;
# if defined(SHD_MASKSAM12) || defined(SHD_MASKSAM21)
varying float maskdiv_s;
varying vec2 masktex_s[2];
# elif defined(SHD_MASKSAM22)
varying float maskdiv_s;
varying vec2 masktex_s[4];
# endif
#endif
#ifdef SHD_ALPHA
# define SWZ aaaa
#else
# ifndef SHD_BGRA
# if defined(SHD_IMG) && defined(SHD_BIGENDIAN)
# define SWZ gbar
# else
# define SWZ bgra
#endif
# else
# if defined(SHD_IMG) && defined(SHD_BIGENDIAN)
# define SWZ grab
# else
# define SWZ rgba
# endif
# endif
#endif
#ifdef SHD_FILTER_DISPLACE
uniform sampler2D tex_filter;
varying vec2 displace_vector;
varying vec2 displace_min;
varying vec2 displace_max;
#endif
#ifdef SHD_FILTER_CURVE
uniform sampler2D tex_filter;
#endif
#ifdef SHD_FILTER_BLUR
uniform sampler2D tex_filter;
uniform int blur_count;
uniform float blur_texlen;
uniform float blur_div;
#endif
// ----------------------------------------------------------------------------
#ifndef SHD_FILTER_BLUR
void main()
{
#if defined(SHD_EXTERNAL) || defined(SHD_TEX)
vec2 coord = tex_c;
#endif
#else // SHD_FILTER_BLUR
vec4 fetch_pixel(float ox, float oy)
{
vec2 coord = tex_c + vec2(ox, oy);
#endif // SHD_FILTER_BLUR
vec4 c;
#ifdef SHD_FILTER_DISPLACE
vec2 dxy = texture2D(tex_filter, tex_c).rg * displace_vector;
float fa = texture2D(tex_filter, tex_c).a;
coord = clamp(tex_c + dxy, displace_min, displace_max);
#endif
#if defined(SHD_YUV) || defined(SHD_NV12) || defined(SHD_YUY2)
float r, g, b, y, u, v, vmu;
# if defined(SHD_YUV)
y = texture2D(tex, tex_c).r;
u = texture2D(texu, tex_c2).r;
v = texture2D(texv, tex_c3).r;
# elif defined(SHD_NV12) || defined(SHD_YUY2)
y = texture2D(tex, tex_c).g;
u = texture2D(texuv, tex_c2).g;
v = texture2D(texuv, tex_c2).a;
# endif
// center u and v around 0 for uv and y (with 128/255 for u + v, 16/255 for y)
u = u - 0.5;
v = v - 0.5;
# if defined (SHD_YUV_709)
// 709 yuv colorspace for hd content
y = (y - 0.062) * 1.164;
vmu = (v * 0.534) + (u * 0.213);
v = v * 1.793;
u = u * 2.115;
# else
// 601 colorspace constants (older yuv content)
y = (y - 0.062) * 1.164;
vmu = (v * 0.813) + (u * 0.391);
v = v * 1.596;
u = u * 2.018;
# endif
// common yuv
r = y + v;
g = y - vmu;
b = y + u;
c = vec4(r, g, b, 1.0);
#elif defined(SHD_SAM12) || defined(SHD_SAM21)
vec4 col00 = texture2D(tex, coord + tex_s[0]).SWZ;
vec4 col01 = texture2D(tex, coord + tex_s[1]).SWZ;
c = (col00 + col01) / div_s;
#elif defined(SHD_SAM22)
vec4 col00 = texture2D(tex, coord + tex_s[0]).SWZ;
vec4 col01 = texture2D(tex, coord + tex_s[1]).SWZ;
vec4 col10 = texture2D(tex, coord + tex_s[2]).SWZ;
vec4 col11 = texture2D(tex, coord + tex_s[3]).SWZ;
c = (col00 + col01 + col10 + col11) / div_s;
#elif defined(SHD_TEX) || defined(SHD_EXTERNAL)
c = texture2D(tex, coord).SWZ;
#else
c = vec4(1, 1, 1, 1);
#endif
#ifdef SHD_MASK
# ifndef SHD_MASK_COLOR
// Classic mask: alpha only
float ma;
# if defined(SHD_MASKSAM12) || defined(SHD_MASKSAM21)
float ma00 = texture2D(texm, tex_m + masktex_s[0]).a;
float ma01 = texture2D(texm, tex_m + masktex_s[1]).a;
ma = (ma00 + ma01) / maskdiv_s;
# elif defined(SHD_MASKSAM22)
float ma00 = texture2D(texm, tex_m + masktex_s[0]).a;
float ma01 = texture2D(texm, tex_m + masktex_s[1]).a;
float ma10 = texture2D(texm, tex_m + masktex_s[2]).a;
float ma11 = texture2D(texm, tex_m + masktex_s[3]).a;
ma = (ma00 + ma01 + ma10 + ma11) / maskdiv_s;
# else
ma = texture2D(texm, tex_m).a;
# endif
# else
// Full color mask
vec4 ma;
# if defined(SHD_MASKSAM12) || defined(SHD_MASKSAM21)
vec4 ma00 = texture2D(texm, tex_m + masktex_s[0]);
vec4 ma01 = texture2D(texm, tex_m + masktex_s[1]);
ma = (ma00 + ma01) / maskdiv_s;
# elif defined(SHD_MASKSAM22)
vec4 ma00 = texture2D(texm, tex_m + masktex_s[0]);
vec4 ma01 = texture2D(texm, tex_m + masktex_s[1]);
vec4 ma10 = texture2D(texm, tex_m + masktex_s[2]);
vec4 ma11 = texture2D(texm, tex_m + masktex_s[3]);
ma = (ma00 + ma01 + ma10 + ma11) / maskdiv_s;
# else
ma = texture2D(texm, tex_m);
# endif
# endif
#endif
#ifdef SHD_AFILL
c.a = 1.0;
#endif
#ifdef SHD_TEXA
c *= texture2D(texa, tex_a).r;
#endif
#if defined(SHD_FILTER_CURVE)
float old_alpha = max(c.a, 0.00001);
float new_alpha = texture2D(tex_filter, vec2(old_alpha, 0.0)).a;
c = vec4(texture2D(tex_filter, vec2(c.r / old_alpha, 0.0)).r * new_alpha,
texture2D(tex_filter, vec2(c.g / old_alpha, 0.0)).g * new_alpha,
texture2D(tex_filter, vec2(c.b / old_alpha, 0.0)).b * new_alpha,
new_alpha);
#endif
#ifndef SHD_FILTER_BLUR
gl_FragColor =
c
#ifndef SHD_NOMUL
* col
#endif
#ifdef SHD_MASK
* ma
#endif
#ifdef SHD_FILTER_DISPLACE
* fa
#endif
;
}
#else // SHD_FILTER_BLUR
return c;
}
#ifndef SHD_FILTER_DIR_Y
# define FETCH_PIXEL(x) fetch_pixel((x), 0.0)
#else
# define FETCH_PIXEL(x) fetch_pixel(0.0, (x))
#endif
float weight_get(float u, float count, float index)
{
vec4 val = texture2D(tex_filter, vec2(u / count, index)).bgra;
return val.a * 255.0 + val.r + val.g / 256.0 + val.b / 65536.0;
}
float offset_get(float u, float count, float index)
{
// val.a is always 0 here ~ discard
vec4 val = texture2D(tex_filter, vec2(u / count, index)).bgra;
return val.r + val.g / 256.0 + val.b / 65536.0;
}
void main()
{
float weight, offset, count;
vec4 acc, px;
int k;
count = float(blur_count);
// Center pixel, offset is 0.0
weight = weight_get(0.0, count, 0.0);
px = FETCH_PIXEL(0.0);
acc = px * weight;
// Left & right pixels
for (k = 1; k <= blur_count; k++)
{
float u = float(k);
weight = weight_get(u, count, 0.0);
offset = offset_get(u, count, 1.0);
// Left
vec4 px1 = FETCH_PIXEL(-((offset + (2.0 * u) - 1.0)) / blur_texlen);
// Right
vec4 px2 = FETCH_PIXEL((offset + (2.0 * u) - 1.0) / blur_texlen);
acc += (px1 + px2) * weight;
}
#ifndef SHD_NOMUL
gl_FragColor = (acc / blur_div) * col;
#else
gl_FragColor = (acc / blur_div);
#endif
}
#endif // SHD_FILTER_BLUR
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