35 lines
688 B
GLSL
35 lines
688 B
GLSL
#ifdef __cplusplus
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#include <string>
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const std::string shader_2d_textured_cirlce_frag = R"("
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#version 300 es
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precision mediump float;
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out vec4 FragColor;
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in vec2 uv;
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in vec2 pos;
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uniform sampler2D tex;
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uniform vec4 color;
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uniform vec4 use_texture;
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const float offset = 1.0 / 32.0;
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vec4 linear_iter(vec4 i, vec4 p, float factor){
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return (i + p) * factor;
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}
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void main() {
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float xs = pos.x * pos.x;
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float ys = pos.y * pos.y;
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float ts = xs + ys;
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const float sq = 0.5 * 0.5;
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if (ts >= sq)
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discard;
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if (ts + offset >= sq)
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FragColor = vec4(1.0, 1.0, 1.0, 1.0);
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else
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FragColor = (texture(tex, uv) * use_texture) + color;
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}
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")";
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#endif |