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Embed GL shaders in source; close #444
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| #define EJ_SHADER_SOURCE(NAME, ...) const char * const NAME = #__VA_ARGS__; | ||
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| EJ_SHADER_SOURCE(EJShaderVertex, | ||
| attribute vec2 pos; | ||
| attribute vec2 uv; | ||
| attribute vec4 color; | ||
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| varying lowp vec4 vColor; | ||
| varying highp vec2 vUv; | ||
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| uniform highp vec2 screen; | ||
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| void main() { | ||
| vColor = color; | ||
| vUv = uv; | ||
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| gl_Position = vec4(pos * (vec2(2,2)/screen) - clamp(screen,-1.0,1.0), 0.0, 1.0); | ||
| } | ||
| ); | ||
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| EJ_SHADER_SOURCE(EJShaderAlphaTexture, | ||
| varying lowp vec4 vColor; | ||
| varying highp vec2 vUv; | ||
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| uniform sampler2D texture; | ||
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| void main() { | ||
| gl_FragColor = texture2D(texture, vUv).aaaa * vColor; | ||
| } | ||
| ); | ||
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| EJ_SHADER_SOURCE(EJShaderFlat, | ||
| varying lowp vec4 vColor; | ||
| varying highp vec2 vUv; | ||
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| void main() { | ||
| gl_FragColor = vColor; | ||
| } | ||
| ); | ||
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| EJ_SHADER_SOURCE(EJShaderPattern, | ||
| varying lowp vec4 vColor; | ||
| varying highp vec2 vUv; | ||
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| uniform sampler2D texture; | ||
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| void main() { | ||
| gl_FragColor = texture2D(texture, mod(vUv, vec2(1.0, 1.0)) ) * vColor; | ||
| } | ||
| ); | ||
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| EJ_SHADER_SOURCE(EJShaderTexture, | ||
| varying lowp vec4 vColor; | ||
| varying highp vec2 vUv; | ||
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| uniform sampler2D texture; | ||
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| void main() { | ||
| gl_FragColor = texture2D(texture, vUv) * vColor; | ||
| } | ||
| ); | ||
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| EJ_SHADER_SOURCE(EJShaderRadialGradient, | ||
| precision highp float; | ||
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| varying highp vec2 vUv; | ||
| varying lowp vec4 vColor; | ||
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| uniform mediump vec3 inner; // x, y, z=radius | ||
| uniform mediump vec3 diff; // x, y, z=radius | ||
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| uniform sampler2D texture; | ||
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| void main() { | ||
| vec2 p2 = vUv - inner.xy; | ||
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| float A = dot(diff.xy, diff.xy) - diff.z * diff.z; | ||
| float B = dot(p2.xy, diff.xy) + inner.z * diff.z; | ||
| float C = dot(p2, p2) - (inner.z * inner.z); | ||
| float D = (B * B) - (A * C); | ||
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| float DA = sqrt(D) / A; | ||
| float BA = B / A; | ||
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| float t = max(BA+DA, BA-DA); | ||
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| lowp float keep = sign(diff.z * t + inner.z); // discard if < 0.0 | ||
| gl_FragColor = texture2D(texture, vec2(t, 0.0)) * vColor * keep; | ||
| } | ||
| ); | ||
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