138 lines
3.8 KiB
GLSL
138 lines
3.8 KiB
GLSL
uniform sampler2D u_Texture0;
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uniform sampler2D u_Texture1;
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uniform sampler2D u_Texture2;
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// TOP DOWN 360 MODEL
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// https://github.com/tokoik/fisheye ...
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// https://stackoverflow.com/questions/39352533/android-opengl-es-textured-half-sphere ???
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varying vec2 v_TexCoords0;
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varying vec2 v_TexCoords1;
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varying vec2 v_TexCoords2;
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#define v_TexCoords1 v_TexCoords0
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#define v_TexCoords2 v_TexCoords0
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#define v_TexCoords3 v_TexCoords0
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uniform float u_opacity;
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uniform mat4 u_colorMatrix;
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uniform int u_mode;
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uniform float u_angle;
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uniform int u_flip;
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uniform float u_effectiveWidth;
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uniform float u_clipBound;
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void main(void)
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{
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vec2 fc = v_TexCoords0.st;
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float PI = 3.141592;
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// FLIP 반전
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// if(u_mode != 2 && u_flip == 1) {
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// fc.y = 1.0 - fc.y;
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// }
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// VR + PANORAMA
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// #if (REMOVE_360_WIDE_SINGLE)
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//if(u_mode == 3 || u_mode == 1)
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if(u_mode == 2 || u_mode == 3)
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{
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float R = u_effectiveWidth / 2.0 * 0.96;//0.5;
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float Cfx = u_effectiveWidth / 2.0;
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float Cfy = 0.5;
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float He = 1.0;
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float We = u_effectiveWidth;
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float Xe = 1.0-fc.x; // flip h
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float Ye = 1.0-fc.y; // upside down
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if(u_mode == 3){
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if(Ye > 0.62) {
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gl_FragColor = vec4(0.0,0.0,0.0,1.0);
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return;
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}
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Ye = (Ye / 0.62);
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}
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float r = Ye/He*R;
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float theta = Xe/We*2.0*PI;// - (u_angle * 3.0); // TOP_DOWN_2D_360
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float Xf = Cfx+r*sin(theta);
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float Yf = Cfy+r*cos(theta);
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fc = vec2(Xf,Yf);
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}
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else if(u_mode == 1) // PANORAMA 2CH
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{
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fc.y = 1.0 - fc.y;
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float Hf = 1.0;
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float R = u_effectiveWidth / 2.0 * 0.99;
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float Cfx = u_effectiveWidth / 2.0;
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float Cfy = 0.5;
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float He = 1.0;
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float We = u_effectiveWidth;
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float Xe = 1.0-fc.x; // flip h
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float Ye = 1.0-fc.y; // upside down
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if(fc.y < 0.5) // top (0~180 -> bottom
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{
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Ye = 1.0-Ye;
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float scale = (Ye + 0.5) * 2.0; // 0.0~0.5 = 1.0~2.0
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float r = ((Ye/He*R)+0.25) / scale;
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float theta = Xe/We*PI+(PI/2.0); // 1/2
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theta += PI;
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float Xf = Cfx+r*sin(theta) * scale * 1.0;
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float Yf = Cfy+r*cos(theta) * scale;
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fc = vec2(Xf,Yf);
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}
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else // bottom 180 ~ 360
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{
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Ye = 1.0-Ye-0.5;
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float scale = (Ye + 0.5) * 2.0; // 0.0~0.5 = 1.0~2.0
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float r = ((Ye/He*R)+0.25) / scale;
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float theta = Xe/We*PI+(PI/2.0); // 1/2
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float Xf = Cfx+r*sin(theta) * scale;
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float Yf = Cfy+r*cos(theta) * scale;
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fc = vec2(Xf,Yf);
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}
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if(u_clipBound > 0.0) {
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//if(v_TexCoords0.st.x < u_clipBound || v_TexCoords0.st.x > (1.0 - u_clipBound))
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if(v_TexCoords0.st.x < 0.0 || v_TexCoords0.st.x > 1.0)
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{
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gl_FragColor = clamp(u_colorMatrix
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* vec4(texture2D(u_Texture0, fc).r,
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texture2D(u_Texture1, fc).r,
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texture2D(u_Texture2, fc).r,
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1.0) * 0.9, 0.0, 1.0);
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return;
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}
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}
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}
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else // CLIP ZOOM
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{
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// ZOOM CLIP
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if (fc.x < 0.0 || fc.x > 1.0) {
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gl_FragColor = vec4(0.0,0.0,0.0,1.0);
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return;
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}
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fc.x *= u_effectiveWidth;
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}
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gl_FragColor = clamp(u_colorMatrix
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* vec4(texture2D(u_Texture0, fc).r,
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texture2D(u_Texture1, fc).r,
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texture2D(u_Texture2, fc).r,
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1.0), 0.0, 1.0);
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}
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