41 lines
1.4 KiB
GLSL
41 lines
1.4 KiB
GLSL
uniform vec2 u_pixel_coord_upper;
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uniform vec2 u_pixel_coord_lower;
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uniform vec3 u_scale;
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uniform vec2 u_fill_translate;
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in vec2 a_pos;
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out vec2 v_pos_a;
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out vec2 v_pos_b;
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#pragma mapbox: define lowp float opacity
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#pragma mapbox: define lowp vec4 pattern_from
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#pragma mapbox: define lowp vec4 pattern_to
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#pragma mapbox: define lowp float pixel_ratio_from
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#pragma mapbox: define lowp float pixel_ratio_to
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void main() {
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#pragma mapbox: initialize lowp float opacity
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#pragma mapbox: initialize mediump vec4 pattern_from
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#pragma mapbox: initialize mediump vec4 pattern_to
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#pragma mapbox: initialize lowp float pixel_ratio_from
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#pragma mapbox: initialize lowp float pixel_ratio_to
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vec2 pattern_tl_a = pattern_from.xy;
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vec2 pattern_br_a = pattern_from.zw;
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vec2 pattern_tl_b = pattern_to.xy;
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vec2 pattern_br_b = pattern_to.zw;
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float tileZoomRatio = u_scale.x;
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float fromScale = u_scale.y;
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float toScale = u_scale.z;
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vec2 display_size_a = (pattern_br_a - pattern_tl_a) / pixel_ratio_from;
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vec2 display_size_b = (pattern_br_b - pattern_tl_b) / pixel_ratio_to;
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gl_Position = projectTile(a_pos + u_fill_translate, a_pos);
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v_pos_a = get_pattern_pos(u_pixel_coord_upper, u_pixel_coord_lower, fromScale * display_size_a, tileZoomRatio, a_pos);
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v_pos_b = get_pattern_pos(u_pixel_coord_upper, u_pixel_coord_lower, toScale * display_size_b, tileZoomRatio, a_pos);
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}
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