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https://github.com/mpv-player/mpv
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vo_opengl: refactor: merge convolution function and sampler entrypoint
There's not much of a reason to have the actual convolution code in a separate function. Merging them actually simplifies the code a bit, and gets rid of the repetitious macro invocations to define the functions for each filter size. There should be no changes in behavior or output.
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wm4
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2e1daaff83
commit
4cae83db76
@ -257,87 +257,56 @@ WEIGHTS_N(weights16, 16)
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WEIGHTS_N(weights32, 32)
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WEIGHTS_N(weights64, 64)
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#define CONVOLUTION_SEP_N(NAME, N) \
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vec4 NAME(VIDEO_SAMPLER tex, vec2 texcoord, vec2 pt, float weights[N]) {\
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vec4 res = vec4(0); \
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for (int n = 0; n < N; n++) { \
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res += weights[n] * texture(tex, texcoord + pt * n); \
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} \
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return res; \
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}
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CONVOLUTION_SEP_N(convolution_sep2, 2)
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CONVOLUTION_SEP_N(convolution_sep4, 4)
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CONVOLUTION_SEP_N(convolution_sep6, 6)
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CONVOLUTION_SEP_N(convolution_sep8, 8)
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CONVOLUTION_SEP_N(convolution_sep12, 12)
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CONVOLUTION_SEP_N(convolution_sep16, 16)
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CONVOLUTION_SEP_N(convolution_sep32, 32)
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CONVOLUTION_SEP_N(convolution_sep64, 64)
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// The dir parameter is (0, 1) or (1, 0), and we expect the shader compiler to
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// remove all the redundant multiplications and additions.
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#define SAMPLE_CONVOLUTION_SEP_N(NAME, N, SAMPLERT, CONV_FUNC, WEIGHTS_FUNC)\
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#define SAMPLE_CONVOLUTION_SEP_N(NAME, N, SAMPLERT, WEIGHTS_FUNC) \
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vec4 NAME(vec2 dir, SAMPLERT lookup, VIDEO_SAMPLER tex, vec2 texsize, \
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vec2 texcoord) { \
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vec2 pt = (1 / texsize) * dir; \
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float fcoord = dot(fract(texcoord * texsize - 0.5), dir); \
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vec2 base = texcoord - fcoord * pt; \
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return CONV_FUNC(tex, base - pt * (N / 2 - 1), pt, \
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WEIGHTS_FUNC(lookup, fcoord)); \
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vec2 base = texcoord - fcoord * pt - pt * (N / 2 - 1); \
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float weights[N] = WEIGHTS_FUNC(lookup, fcoord); \
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vec4 res = vec4(0); \
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for (int n = 0; n < N; n++) { \
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res += weights[n] * texture(tex, base + pt * n); \
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} \
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return res; \
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}
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep2, 2, sampler1D, convolution_sep2, weights2)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep4, 4, sampler1D, convolution_sep4, weights4)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep6, 6, sampler2D, convolution_sep6, weights6)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep8, 8, sampler2D, convolution_sep8, weights8)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep12, 12, sampler2D, convolution_sep12, weights12)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep16, 16, sampler2D, convolution_sep16, weights16)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep32, 32, sampler2D, convolution_sep32, weights32)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep64, 64, sampler2D, convolution_sep64, weights64)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep2, 2, sampler1D, weights2)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep4, 4, sampler1D, weights4)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep6, 6, sampler2D, weights6)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep8, 8, sampler2D, weights8)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep12, 12, sampler2D, weights12)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep16, 16, sampler2D, weights16)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep32, 32, sampler2D, weights32)
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SAMPLE_CONVOLUTION_SEP_N(sample_convolution_sep64, 64, sampler2D, weights64)
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#define CONVOLUTION_N(NAME, N) \
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vec4 NAME(VIDEO_SAMPLER tex, vec2 texcoord, vec2 pt, float taps_x[N], \
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float taps_y[N]) { \
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vec4 res = vec4(0); \
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for (int y = 0; y < N; y++) { \
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vec4 line = vec4(0); \
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for (int x = 0; x < N; x++) \
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line += taps_x[x] * texture(tex, texcoord + pt * vec2(x, y));\
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res += taps_y[y] * line; \
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} \
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return res; \
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}
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CONVOLUTION_N(convolution2, 2)
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CONVOLUTION_N(convolution4, 4)
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CONVOLUTION_N(convolution6, 6)
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CONVOLUTION_N(convolution8, 8)
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CONVOLUTION_N(convolution12, 12)
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CONVOLUTION_N(convolution16, 16)
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CONVOLUTION_N(convolution32, 32)
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CONVOLUTION_N(convolution64, 64)
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#define SAMPLE_CONVOLUTION_N(NAME, N, SAMPLERT, CONV_FUNC, WEIGHTS_FUNC) \
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#define SAMPLE_CONVOLUTION_N(NAME, N, SAMPLERT, WEIGHTS_FUNC) \
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vec4 NAME(SAMPLERT lookup, VIDEO_SAMPLER tex, vec2 texsize, vec2 texcoord) {\
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vec2 pt = 1 / texsize; \
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vec2 fcoord = fract(texcoord * texsize - 0.5); \
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vec2 base = texcoord - fcoord * pt; \
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return CONV_FUNC(tex, base - pt * (N / 2 - 1), pt, \
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WEIGHTS_FUNC(lookup, fcoord.x), \
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WEIGHTS_FUNC(lookup, fcoord.y)); \
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vec2 base = texcoord - fcoord * pt - pt * (N / 2 - 1); \
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vec4 res = vec4(0); \
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float w_x[N] = WEIGHTS_FUNC(lookup, fcoord.x); \
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float w_y[N] = WEIGHTS_FUNC(lookup, fcoord.y); \
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for (int y = 0; y < N; y++) { \
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vec4 line = vec4(0); \
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for (int x = 0; x < N; x++) \
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line += w_x[x] * texture(tex, base + pt * vec2(x, y)); \
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res += w_y[y] * line; \
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} \
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return res; \
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}
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SAMPLE_CONVOLUTION_N(sample_convolution2, 2, sampler1D, convolution2, weights2)
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SAMPLE_CONVOLUTION_N(sample_convolution4, 4, sampler1D, convolution4, weights4)
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SAMPLE_CONVOLUTION_N(sample_convolution6, 6, sampler2D, convolution6, weights6)
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SAMPLE_CONVOLUTION_N(sample_convolution8, 8, sampler2D, convolution8, weights8)
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SAMPLE_CONVOLUTION_N(sample_convolution12, 12, sampler2D, convolution12, weights12)
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SAMPLE_CONVOLUTION_N(sample_convolution16, 16, sampler2D, convolution16, weights16)
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SAMPLE_CONVOLUTION_N(sample_convolution32, 32, sampler2D, convolution32, weights32)
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SAMPLE_CONVOLUTION_N(sample_convolution64, 64, sampler2D, convolution64, weights64)
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SAMPLE_CONVOLUTION_N(sample_convolution2, 2, sampler1D, weights2)
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SAMPLE_CONVOLUTION_N(sample_convolution4, 4, sampler1D, weights4)
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SAMPLE_CONVOLUTION_N(sample_convolution6, 6, sampler2D, weights6)
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SAMPLE_CONVOLUTION_N(sample_convolution8, 8, sampler2D, weights8)
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SAMPLE_CONVOLUTION_N(sample_convolution12, 12, sampler2D, weights12)
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SAMPLE_CONVOLUTION_N(sample_convolution16, 16, sampler2D, weights16)
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SAMPLE_CONVOLUTION_N(sample_convolution32, 32, sampler2D, weights32)
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SAMPLE_CONVOLUTION_N(sample_convolution64, 64, sampler2D, weights64)
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// Unsharp masking
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vec4 sample_sharpen3(VIDEO_SAMPLER tex, vec2 texsize, vec2 texcoord, float param1) {
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