mbgl::shaders::ShaderSource< BuiltIn::BackgroundPatternProgram, gfx::Backend::Type::OpenGL > Struct Reference

#include <background_pattern.hpp>

Static Public Attributes
static constexpr const char *	vertex
static constexpr const char *	fragment

Detailed Description

Definition at line 10 of file background_pattern.hpp.

Member Data Documentation

fragment

constexpr const char* mbgl::shaders::ShaderSource< BuiltIn::BackgroundPatternProgram, gfx::Backend::Type::OpenGL >::fragment

staticconstexpr

Initial value:

= R"(uniform vec2 u_pattern_tl_a;
uniform vec2 u_pattern_br_a;
uniform vec2 u_pattern_tl_b;
uniform vec2 u_pattern_br_b;
uniform vec2 u_texsize;
uniform float u_mix;
uniform float u_opacity;
 
uniform sampler2D u_image;
 
in vec2 v_pos_a;
in vec2 v_pos_b;
 
void main() {
    vec2 imagecoord = mod(v_pos_a, 1.0);
    vec2 pos = mix(u_pattern_tl_a / u_texsize, u_pattern_br_a / u_texsize, imagecoord);
    vec4 color1 = texture(u_image, pos);
 
    vec2 imagecoord_b = mod(v_pos_b, 1.0);
    vec2 pos2 = mix(u_pattern_tl_b / u_texsize, u_pattern_br_b / u_texsize, imagecoord_b);
    vec4 color2 = texture(u_image, pos2);
 
    fragColor = mix(color1, color2, u_mix) * u_opacity;
 
#ifdef OVERDRAW_INSPECTOR
    fragColor = vec4(1.0);
#endif
}
)"

Definition at line 31 of file background_pattern.hpp.

vertex

constexpr const char* mbgl::shaders::ShaderSource< BuiltIn::BackgroundPatternProgram, gfx::Backend::Type::OpenGL >::vertex

staticconstexpr

Initial value:

= R"(uniform mat4 u_matrix;
uniform vec2 u_pattern_size_a;
uniform vec2 u_pattern_size_b;
uniform vec2 u_pixel_coord_upper;
uniform vec2 u_pixel_coord_lower;
uniform float u_scale_a;
uniform float u_scale_b;
uniform float u_tile_units_to_pixels;
 
layout (location = 0) in vec2 a_pos;
out vec2 v_pos_a;
out vec2 v_pos_b;
 
void main() {
    gl_Position = u_matrix * vec4(a_pos, 0, 1);
 
    v_pos_a = get_pattern_pos(u_pixel_coord_upper, u_pixel_coord_lower, u_scale_a * u_pattern_size_a, u_tile_units_to_pixels, a_pos);
    v_pos_b = get_pattern_pos(u_pixel_coord_upper, u_pixel_coord_lower, u_scale_b * u_pattern_size_b, u_tile_units_to_pixels, a_pos);
}
)"

Definition at line 11 of file background_pattern.hpp.

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The documentation for this struct was generated from the following file:

• /home/runner/work/maplibre-native/maplibre-native/include/mbgl/shaders/gl/background_pattern.hpp