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this._shader = document.getElementById('shader').text; 
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this._panoWebGLLayer.webGL.createPostProcessingShader(this._shader, 'sm, resolution, radius, dir'); 
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return "\ precision mediump float; \ varying vec4 vColor; \ varying vec2 tx; \ uniform sampler2D sm; \ uniform float resolution; \ uniform float radius; \ uniform vec2 dir; \ \ void main() { \ vec4 sum = vec4(0.0); \ vec2 tc = tx; \ float blur = radius/resolution; \ \ float hstep = dir.x; \ float vstep = dir.y; \ \ sum += texture2D(sm, vec2(tc.x  4.0*blur*hstep, tc.y  4.0*blur*vstep)) * 0.0162162162; \ sum += texture2D(sm, vec2(tc.x  3.0*blur*hstep, tc.y  3.0*blur*vstep)) * 0.0540540541; \ sum += texture2D(sm, vec2(tc.x  2.0*blur*hstep, tc.y  2.0*blur*vstep)) * 0.1216216216; \ sum += texture2D(sm, vec2(tc.x  1.0*blur*hstep, tc.y  1.0*blur*vstep)) * 0.1945945946; \ \ sum += texture2D(sm, vec2(tc.x, tc.y)) * 0.2270270270; \ \ sum += texture2D(sm, vec2(tc.x + 1.0*blur*hstep, tc.y + 1.0*blur*vstep)) * 0.1945945946; \ sum += texture2D(sm, vec2(tc.x + 2.0*blur*hstep, tc.y + 2.0*blur*vstep)) * 0.1216216216; \ sum += texture2D(sm, vec2(tc.x + 3.0*blur*hstep, tc.y + 3.0*blur*vstep)) * 0.0540540541; \ sum += texture2D(sm, vec2(tc.x + 4.0*blur*hstep, tc.y + 4.0*blur*vstep)) * 0.0162162162; \ \ gl_FragColor = vec4(sum.rgb, 1.0); \ }" 
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krpano.webGL.context.uniform2f(shader.dir, 1, 0); krpano.webGL.context.uniform1f(shader.resolution, 1024); krpano.webGL.context.uniform1f(shader.radius, 20); 
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shader = krpano.webGL.createPostProcessingShader( get_shader_src(), "sharpen_factor,sz,dir,resolution,radius"); 
This post has been edited 2 times, last edit by "nosferatu" (Apr 6th 2017, 9:09am)
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gl_FragColor = vColor * vec4(sum.rgb, 1.0); 
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gl_FragColor = vec4(sum.rgb, 1.0); 
A lot of things are wrong there:Could you tell me what I'm doing wrong?