89 lines
5.1 KiB
C++
89 lines
5.1 KiB
C++
const char *sun_shader_100 = "#version 100\n\
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precision mediump float;\
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varying vec2 fragTexCoord;\
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varying vec4 fragColor;\
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uniform vec3 color;\
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uniform float sun_radius;\
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uniform float start_transperency;\
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vec2 offset = vec2(1.0, 1.0);\
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float sun_end = 1.0;\
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void main()\
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{\
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offset.x -= fragTexCoord.x * 2.0;\
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offset.y -= fragTexCoord.y * 2.0;\
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float radius = length(offset);\
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if (radius < sun_radius) {\
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gl_FragColor = vec4(color, 1.0);\
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}\
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else if (radius < sun_end) {\
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float gradient = radius;\
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gradient -= sun_radius;\
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gradient = gradient / (sun_end - sun_radius) * start_transperency;\
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gl_FragColor = vec4(color, start_transperency - gradient);\
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}\
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else {\
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gl_FragColor = vec4(color, 0.0);\
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}\
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}";
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unsigned char shaders_sun_330_fs[] = {
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