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/* clang-format off */
#[modes]
mode_sdf =
mode_shadow = #define MODE_SHADOW
mode_shadow_RGBA = #define MODE_SHADOW \n#define USE_RGBA_SHADOWS
#[specializations]
#[vertex]
layout(location = 0) in vec3 vertex;
uniform highp mat4 projection;
uniform highp vec4 modelview1;
uniform highp vec4 modelview2;
uniform highp vec2 direction;
uniform highp float z_far;
#ifdef MODE_SHADOW
out float depth;
#endif
void main() {
highp vec4 vtx = vec4(vertex, 1.0) * mat4(modelview1, modelview2, vec4(0.0, 0.0, 1.0, 0.0), vec4(0.0, 0.0, 0.0, 1.0));
#ifdef MODE_SHADOW
depth = dot(direction, vtx.xy);
#endif
gl_Position = projection * vtx;
}
#[fragment]
uniform highp mat4 projection;
uniform highp vec4 modelview1;
uniform highp vec4 modelview2;
uniform highp vec2 direction;
uniform highp float z_far;
#ifdef MODE_SHADOW
in highp float depth;
#endif
#ifdef USE_RGBA_SHADOWS
layout(location = 0) out lowp vec4 out_buf;
#else
layout(location = 0) out highp float out_buf;
#endif
void main() {
float out_depth = 1.0;
#ifdef MODE_SHADOW
out_depth = depth / z_far;
#endif
#ifdef USE_RGBA_SHADOWS
out_depth = clamp(out_depth, -1.0, 1.0);
out_depth = out_depth * 0.5 + 0.5;
highp vec4 comp = fract(out_depth * vec4(255.0 * 255.0 * 255.0, 255.0 * 255.0, 255.0, 1.0));
comp -= comp.xxyz * vec4(0.0, 1.0 / 255.0, 1.0 / 255.0, 1.0 / 255.0);
out_buf = comp;
#else
out_buf = out_depth;
#endif
}
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