heatmap_texture.hpp

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// Generated code, do not modify this file!
// Generated on 2023-04-05T16:25:15.886Z by mwilsnd using shaders/generate_shader_code.js
 
#pragma once
#include <mbgl/shaders/shader_source.hpp>
 
namespace mbgl {
namespace shaders {
 
template <> struct ShaderSource<BuiltIn::HeatmapTextureProgram, gfx::Backend::Type::OpenGL> {
    static constexpr const char* vertex = R"(uniform mat4 u_matrix;
uniform vec2 u_world;
layout (location = 0) in vec2 a_pos;
out vec2 v_pos;
 
void main() {
    gl_Position = u_matrix * vec4(a_pos * u_world, 0, 1);
 
    v_pos.x = a_pos.x;
    v_pos.y = 1.0 - a_pos.y;
}
)";
    static constexpr const char* fragment = R"(uniform sampler2D u_image;
uniform sampler2D u_color_ramp;
uniform float u_opacity;
in vec2 v_pos;
 
void main() {
    float t = texture(u_image, v_pos).r;
    vec4 color = texture(u_color_ramp, vec2(t, 0.5));
    fragColor = color * u_opacity;
 
#ifdef OVERDRAW_INSPECTOR
    fragColor = vec4(0.0);
#endif
}
)";
};
 
} // namespace shaders
} // namespace mbgl