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// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED.
#include <mbgl/programs/fill_extrusion_program.hpp>
#include <mbgl/programs/gl/shader_source.hpp>
#include <mbgl/gl/program.hpp>
namespace mbgl {
namespace gfx {
template <>
std::unique_ptr<Program<FillExtrusionProgram>>
Context::createProgram<gl::Context>(const ProgramParameters& programParameters) {
return gl::Program<FillExtrusionProgram>::createProgram(
reinterpret_cast<gl::Context&>(*this), programParameters, "fill_extrusion",
programs::gl::shaderSource() + 21238, programs::gl::shaderSource() + 23121);
}
} // namespace gfx
} // namespace mbgl
// Uncompressed source of fill_extrusion.vertex.glsl:
/*
uniform mat4 u_matrix;
uniform vec3 u_lightcolor;
uniform lowp vec3 u_lightpos;
uniform lowp float u_lightintensity;
uniform float u_vertical_gradient;
attribute vec2 a_pos;
attribute vec4 a_normal_ed;
varying vec4 v_color;
#ifndef HAS_UNIFORM_u_base
uniform lowp float u_base_t;
attribute highp vec2 a_base;
#else
uniform highp float u_base;
#endif
#ifndef HAS_UNIFORM_u_height
uniform lowp float u_height_t;
attribute highp vec2 a_height;
#else
uniform highp float u_height;
#endif
#ifndef HAS_UNIFORM_u_color
uniform lowp float u_color_t;
attribute highp vec4 a_color;
#else
uniform highp vec4 u_color;
#endif
void main() {
#ifndef HAS_UNIFORM_u_base
highp float base = unpack_mix_vec2(a_base, u_base_t);
#else
highp float base = u_base;
#endif
#ifndef HAS_UNIFORM_u_height
highp float height = unpack_mix_vec2(a_height, u_height_t);
#else
highp float height = u_height;
#endif
#ifndef HAS_UNIFORM_u_color
highp vec4 color = unpack_mix_color(a_color, u_color_t);
#else
highp vec4 color = u_color;
#endif
vec3 normal = a_normal_ed.xyz;
base = max(0.0, base);
height = max(0.0, height);
float t = mod(normal.x, 2.0);
gl_Position = u_matrix * vec4(a_pos, t > 0.0 ? height : base, 1);
// Relative luminance (how dark/bright is the surface color?)
float colorvalue = color.r * 0.2126 + color.g * 0.7152 + color.b * 0.0722;
v_color = vec4(0.0, 0.0, 0.0, 1.0);
// Add slight ambient lighting so no extrusions are totally black
vec4 ambientlight = vec4(0.03, 0.03, 0.03, 1.0);
color += ambientlight;
// Calculate cos(theta), where theta is the angle between surface normal and diffuse light ray
float directional = clamp(dot(normal / 16384.0, u_lightpos), 0.0, 1.0);
// Adjust directional so that
// the range of values for highlight/shading is narrower
// with lower light intensity
// and with lighter/brighter surface colors
directional = mix((1.0 - u_lightintensity), max((1.0 - colorvalue + u_lightintensity), 1.0), directional);
// Add gradient along z axis of side surfaces
if (normal.y != 0.0) {
// This avoids another branching statement, but multiplies by a constant of 0.84 if no vertical gradient,
// and otherwise calculates the gradient based on base + height
directional *= (
(1.0 - u_vertical_gradient) +
(u_vertical_gradient * clamp((t + base) * pow(height / 150.0, 0.5), mix(0.7, 0.98, 1.0 - u_lightintensity), 1.0)));
}
// Assign final color based on surface + ambient light color, diffuse light directional, and light color
// with lower bounds adjusted to hue of light
// so that shading is tinted with the complementary (opposite) color to the light color
v_color.r += clamp(color.r * directional * u_lightcolor.r, mix(0.0, 0.3, 1.0 - u_lightcolor.r), 1.0);
v_color.g += clamp(color.g * directional * u_lightcolor.g, mix(0.0, 0.3, 1.0 - u_lightcolor.g), 1.0);
v_color.b += clamp(color.b * directional * u_lightcolor.b, mix(0.0, 0.3, 1.0 - u_lightcolor.b), 1.0);
}
*/
// Uncompressed source of fill_extrusion.fragment.glsl:
/*
varying vec4 v_color;
void main() {
gl_FragColor = v_color;
#ifdef OVERDRAW_INSPECTOR
gl_FragColor = vec4(1.0);
#endif
}
*/
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