232 lines
6.4 KiB
C++
232 lines
6.4 KiB
C++
// Generated code, do not modify this file!
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// Generated on 2023-04-04T01:24:40.539Z by mwilsnd using shaders/generate_shader_code.js
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#pragma once
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#include <mbgl/shaders/shader_source.hpp>
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namespace mbgl {
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namespace shaders {
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template <> struct ShaderSource<BuiltIn::CircleProgram, gfx::Backend::Type::OpenGL> {
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static constexpr const char* vertex = R"(uniform mat4 u_matrix;
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uniform bool u_scale_with_map;
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uniform bool u_pitch_with_map;
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uniform vec2 u_extrude_scale;
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uniform lowp float u_device_pixel_ratio;
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uniform highp float u_camera_to_center_distance;
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attribute vec2 a_pos;
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varying vec3 v_data;
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#ifndef HAS_UNIFORM_u_color
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uniform lowp float u_color_t;
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attribute highp vec4 a_color;
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varying highp vec4 color;
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#else
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uniform highp vec4 u_color;
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#endif
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#ifndef HAS_UNIFORM_u_radius
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uniform lowp float u_radius_t;
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attribute mediump vec2 a_radius;
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varying mediump float radius;
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#else
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uniform mediump float u_radius;
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#endif
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#ifndef HAS_UNIFORM_u_blur
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uniform lowp float u_blur_t;
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attribute lowp vec2 a_blur;
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varying lowp float blur;
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#else
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uniform lowp float u_blur;
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#endif
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#ifndef HAS_UNIFORM_u_opacity
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uniform lowp float u_opacity_t;
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attribute lowp vec2 a_opacity;
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varying lowp float opacity;
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#else
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uniform lowp float u_opacity;
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#endif
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#ifndef HAS_UNIFORM_u_stroke_color
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uniform lowp float u_stroke_color_t;
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attribute highp vec4 a_stroke_color;
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varying highp vec4 stroke_color;
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#else
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uniform highp vec4 u_stroke_color;
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#endif
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#ifndef HAS_UNIFORM_u_stroke_width
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uniform lowp float u_stroke_width_t;
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attribute mediump vec2 a_stroke_width;
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varying mediump float stroke_width;
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#else
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uniform mediump float u_stroke_width;
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#endif
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#ifndef HAS_UNIFORM_u_stroke_opacity
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uniform lowp float u_stroke_opacity_t;
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attribute lowp vec2 a_stroke_opacity;
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varying lowp float stroke_opacity;
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#else
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uniform lowp float u_stroke_opacity;
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#endif
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void main(void) {
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#ifndef HAS_UNIFORM_u_color
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color = unpack_mix_color(a_color, u_color_t);
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#else
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highp vec4 color = u_color;
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#endif
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#ifndef HAS_UNIFORM_u_radius
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radius = unpack_mix_vec2(a_radius, u_radius_t);
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#else
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mediump float radius = u_radius;
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#endif
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#ifndef HAS_UNIFORM_u_blur
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blur = unpack_mix_vec2(a_blur, u_blur_t);
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#else
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lowp float blur = u_blur;
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#endif
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#ifndef HAS_UNIFORM_u_opacity
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opacity = unpack_mix_vec2(a_opacity, u_opacity_t);
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#else
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lowp float opacity = u_opacity;
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#endif
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#ifndef HAS_UNIFORM_u_stroke_color
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stroke_color = unpack_mix_color(a_stroke_color, u_stroke_color_t);
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#else
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highp vec4 stroke_color = u_stroke_color;
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#endif
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#ifndef HAS_UNIFORM_u_stroke_width
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stroke_width = unpack_mix_vec2(a_stroke_width, u_stroke_width_t);
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#else
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mediump float stroke_width = u_stroke_width;
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#endif
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#ifndef HAS_UNIFORM_u_stroke_opacity
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stroke_opacity = unpack_mix_vec2(a_stroke_opacity, u_stroke_opacity_t);
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#else
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lowp float stroke_opacity = u_stroke_opacity;
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#endif
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// unencode the extrusion vector that we snuck into the a_pos vector
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vec2 extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0);
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// multiply a_pos by 0.5, since we had it * 2 in order to sneak
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// in extrusion data
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vec2 circle_center = floor(a_pos * 0.5);
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if (u_pitch_with_map) {
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vec2 corner_position = circle_center;
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if (u_scale_with_map) {
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corner_position += extrude * (radius + stroke_width) * u_extrude_scale;
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} else {
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// Pitching the circle with the map effectively scales it with the map
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// To counteract the effect for pitch-scale: viewport, we rescale the
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// whole circle based on the pitch scaling effect at its central point
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vec4 projected_center = u_matrix * vec4(circle_center, 0, 1);
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corner_position += extrude * (radius + stroke_width) * u_extrude_scale * (projected_center.w / u_camera_to_center_distance);
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}
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gl_Position = u_matrix * vec4(corner_position, 0, 1);
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} else {
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gl_Position = u_matrix * vec4(circle_center, 0, 1);
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if (u_scale_with_map) {
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gl_Position.xy += extrude * (radius + stroke_width) * u_extrude_scale * u_camera_to_center_distance;
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} else {
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gl_Position.xy += extrude * (radius + stroke_width) * u_extrude_scale * gl_Position.w;
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}
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}
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// This is a minimum blur distance that serves as a faux-antialiasing for
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// the circle. since blur is a ratio of the circle's size and the intent is
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// to keep the blur at roughly 1px, the two are inversely related.
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lowp float antialiasblur = 1.0 / u_device_pixel_ratio / (radius + stroke_width);
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v_data = vec3(extrude.x, extrude.y, antialiasblur);
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}
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)";
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static constexpr const char* fragment = R"(varying vec3 v_data;
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#ifndef HAS_UNIFORM_u_color
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varying highp vec4 color;
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#else
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uniform highp vec4 u_color;
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#endif
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#ifndef HAS_UNIFORM_u_radius
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varying mediump float radius;
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#else
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uniform mediump float u_radius;
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#endif
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#ifndef HAS_UNIFORM_u_blur
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varying lowp float blur;
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#else
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uniform lowp float u_blur;
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#endif
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#ifndef HAS_UNIFORM_u_opacity
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varying lowp float opacity;
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#else
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uniform lowp float u_opacity;
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#endif
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#ifndef HAS_UNIFORM_u_stroke_color
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varying highp vec4 stroke_color;
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#else
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uniform highp vec4 u_stroke_color;
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#endif
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#ifndef HAS_UNIFORM_u_stroke_width
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varying mediump float stroke_width;
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#else
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uniform mediump float u_stroke_width;
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#endif
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#ifndef HAS_UNIFORM_u_stroke_opacity
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varying lowp float stroke_opacity;
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#else
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uniform lowp float u_stroke_opacity;
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#endif
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void main() {
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#ifdef HAS_UNIFORM_u_color
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highp vec4 color = u_color;
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#endif
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#ifdef HAS_UNIFORM_u_radius
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mediump float radius = u_radius;
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#endif
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#ifdef HAS_UNIFORM_u_blur
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lowp float blur = u_blur;
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#endif
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#ifdef HAS_UNIFORM_u_opacity
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lowp float opacity = u_opacity;
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#endif
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#ifdef HAS_UNIFORM_u_stroke_color
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highp vec4 stroke_color = u_stroke_color;
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#endif
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#ifdef HAS_UNIFORM_u_stroke_width
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mediump float stroke_width = u_stroke_width;
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#endif
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#ifdef HAS_UNIFORM_u_stroke_opacity
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lowp float stroke_opacity = u_stroke_opacity;
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#endif
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vec2 extrude = v_data.xy;
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float extrude_length = length(extrude);
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lowp float antialiasblur = v_data.z;
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float antialiased_blur = -max(blur, antialiasblur);
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float opacity_t = smoothstep(0.0, antialiased_blur, extrude_length - 1.0);
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float color_t = stroke_width < 0.01 ? 0.0 : smoothstep(
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antialiased_blur,
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0.0,
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extrude_length - radius / (radius + stroke_width)
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);
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gl_FragColor = opacity_t * mix(color * opacity, stroke_color * stroke_opacity, color_t);
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#ifdef OVERDRAW_INSPECTOR
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gl_FragColor = vec4(1.0);
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#endif
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}
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)";
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};
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} // namespace shaders
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} // namespace mbgl
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