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e3e4a1985a
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30 lines
697 B
GLSL
30 lines
697 B
GLSL
#ifdef ENABLE_VTF
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varying LOW_P vec4 v_color;
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#else
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varying vec2 v_colorTexCoord;
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uniform sampler2D u_colorTex;
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#endif
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varying vec2 v_maskTexCoord;
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uniform sampler2D u_maskTex;
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uniform float u_opacity;
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uniform vec2 u_contrastGamma;
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void main()
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{
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#ifdef ENABLE_VTF
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LOW_P vec4 glyphColor = v_color;
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#else
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LOW_P vec4 glyphColor = texture2D(u_colorTex, v_colorTexCoord);
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#endif
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#ifdef GLES3
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float dist = texture2D(u_maskTex, v_maskTexCoord).r;
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#else
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float dist = texture2D(u_maskTex, v_maskTexCoord).a;
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#endif
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float alpha = smoothstep(u_contrastGamma.x - u_contrastGamma.y, u_contrastGamma.x + u_contrastGamma.y, dist) * u_opacity;
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glyphColor.a *= alpha;
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gl_FragColor = glyphColor;
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}
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