57 lines
1.7 KiB
GLSL
57 lines
1.7 KiB
GLSL
#version 450
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#extension GL_EXT_buffer_reference : require
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#include "hex_common.glsl"
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layout(location = 0) flat out vec4 color;
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void main() {
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uint hex_index;
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Region region;
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float raise = 0.01;
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if(gl_InstanceIndex == 0) {
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hex_index = pc.context.clicked_hex;
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region = pc.context.regions[pc.context.clicked_region];
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color = vec4(0.5, 0.5, 0.5, 0.3);
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} else {
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hex_index = pc.context.hovered_hex;
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region = pc.context.regions[pc.context.hovered_region];
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color = vec4(0.25, 0.25, 0.25, 0.3);
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}
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vec2 region_qr = vec2(region.q, region.r);
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vec4 region_pos = vec4(0, 0, 0, 0);
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region_pos.x = (region_qr.x+region_qr.y/2)*region_width - region_qr.y*x/2;
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region_pos.z = 0.75*region_qr.y*region_height + 0.25*region_qr.y*z + 0.5*region_qr.x*z;
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float radius = 0;
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float ring = 0;
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int side = 0;
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if(hex_index != 0) {
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radius = floor(0.5 + sqrt(12*hex_index-3)/6);
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ring = hex_index - (3*radius*radius - 3*radius + 1);
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side = int(floor(ring/radius));
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}
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vec4 position = vertices[indices[gl_VertexIndex]]
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+ (starts[side]*radius)
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+ (direction[side]*(ring-(radius*side)))
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+ region_pos;
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if(gl_VertexIndex % 3 == 0) {
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position.y = (region.hexes[hex_index].heights[0] +
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region.hexes[hex_index].heights[1] +
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region.hexes[hex_index].heights[2] +
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region.hexes[hex_index].heights[3] +
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region.hexes[hex_index].heights[4] +
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region.hexes[hex_index].heights[5])/6 + region.y;
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} else {
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position.y = region.hexes[hex_index].heights[indices[gl_VertexIndex]-1] + region.y;
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}
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position.y += raise;
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gl_Position = pc.context.proj * pc.context.view * position;
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}
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