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https://github.com/cemu-project/cemu_graphic_packs.git
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f9066de98d
As of Cemu 1.15.12b, the textureSrcResolution (textureSrc_Resolution not texture_SrcResolution) uniform used by internal/external resize shaders still gives the native resolution of the game even when a resolution gfx pack is active. We can just ask for texture resolution ourselves in the shaders as a workaround.
99 lines
2.8 KiB
GLSL
99 lines
2.8 KiB
GLSL
// https://github.com/obsproject/obs-studio/blob/master/libobs/data/bicubic_scale.effect // added customizable polynomials back
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#version 420
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in vec2 passUV;
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layout(binding=0) uniform sampler2D textureSrc;
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// uniform vec2 textureSrcResolution;
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layout(location = 0) out vec4 colorOut0;
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float weight(float x)
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{
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float ax = abs(x);
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const float B = $b;
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const float C = $c;
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if (ax < 2.0) {
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float x_squared = x * x;
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if (ax < 1.0) {
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return (x_squared *
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((12.0 - 9.0 * B - 6.0 * C) * ax +
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(-18.0 + 12.0 * B + 6.0 * C)) +
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(6.0 - 2.0 * B))
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/ 6.0;
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}
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return (x_squared *
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((-B - 6.0 * C) * ax + (6.0 * B + 30.0 * C)) +
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(-12.0 * B - 48.0 * C) * ax +
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(8.0 * B + 24.0 * C))
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/ 6.0;
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}
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return 0.0;
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}
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vec4 weight4(float x)
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{
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return vec4(
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weight(x - 2.0),
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weight(x - 1.0),
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weight(x),
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weight(x + 1.0));
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}
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vec4 DrawBicubic(vec2 f_in)
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{
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vec2 textureSrcResolution = vec2( textureSize(textureSrc,0) );
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vec2 stepxy = 1.0/textureSrcResolution;
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vec2 pos = f_in.st + stepxy * 0.5;
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vec2 f = fract(pos * textureSrcResolution);
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vec4 rowtaps = weight4(1.0 - f.x);
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vec4 coltaps = weight4(1.0 - f.y);
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vec2 uv0 = (-1.5 - f) * stepxy + pos;
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vec2 uv1 = uv0 + stepxy;
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vec2 uv2 = uv1 + stepxy;
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vec2 uv3 = uv2 + stepxy;
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float u_weight_sum = rowtaps.y + rowtaps.z;
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float u_middle_offset = rowtaps.z * stepxy.x / u_weight_sum;
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float u_middle = uv1.x + u_middle_offset;
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float v_weight_sum = coltaps.y + coltaps.z;
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float v_middle_offset = coltaps.z * stepxy.y / v_weight_sum;
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float v_middle = uv1.y + v_middle_offset;
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// wrap doesn't apply to texelFetch
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// clamp
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// ivec2 coord_top_left = ivec2(max(uv0 * textureSrcResolution, 0.5));
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// ivec2 coord_bottom_right = ivec2(min(uv3 * textureSrcResolution, textureSrcResolution - 0.5));
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// mirror
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ivec2 coord_top_left = ivec2(abs(uv0 * textureSrcResolution));
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ivec2 coord_bottom_right = ivec2(textureSrcResolution - abs(uv3 * textureSrcResolution - textureSrcResolution));
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vec4 top = texelFetch(textureSrc, ivec2(coord_top_left), 0) * rowtaps.x;
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top += texture(textureSrc, vec2(u_middle, uv0.y)) * u_weight_sum;
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top += texelFetch(textureSrc, ivec2(coord_bottom_right.x, coord_top_left.y), 0) * rowtaps.w;
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vec4 total = top * coltaps.x;
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vec4 middle = texture(textureSrc, vec2(uv0.x, v_middle)) * rowtaps.x;
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middle += texture(textureSrc, vec2(u_middle, v_middle)) * u_weight_sum;
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middle += texture(textureSrc, vec2(uv3.x, v_middle)) * rowtaps.w;
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total += middle * v_weight_sum;
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vec4 bottom = texelFetch(textureSrc, ivec2(coord_top_left.x, coord_bottom_right.y), 0) * rowtaps.x;
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bottom += texture(textureSrc, vec2(u_middle, uv3.y)) * u_weight_sum;
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bottom += texelFetch(textureSrc, ivec2(coord_bottom_right), 0) * rowtaps.w;
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total += bottom * coltaps.w;
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return total;
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}
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void main()
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{
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colorOut0 = vec4(DrawBicubic(passUV).rgb,1.0);
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}
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