56 lines
2.0 KiB
Plaintext
56 lines
2.0 KiB
Plaintext
shader_type spatial;
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uniform vec2 AREA;
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uniform sampler2D LAYER_1_ALBEDO : hint_default_black;
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uniform sampler2D LAYER_1_NORMAL_MAP : hint_default_black;
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uniform sampler2D LAYER_2_ALBEDO : hint_default_black;
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uniform sampler2D LAYER_2_NORMAL_MAP : hint_default_black;
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uniform sampler2D LAYER_3_ALBEDO : hint_default_black;
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uniform sampler2D LAYER_3_NORMAL_MAP : hint_default_black;
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uniform sampler2D LAYER_4_ALBEDO : hint_default_black;
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uniform sampler2D LAYER_4_NORMAL_MAP : hint_default_black;
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uniform float MAX_HEIGHT = 100.0;
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uniform sampler2D TERRAIN_MAP : hint_default_transparent, repeat_disable;
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void fragment() {
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vec2 uv = UV * AREA;
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vec2 uv_alt = uv * -0.25;
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vec3 splat_map = texture(TERRAIN_MAP, UV).rgb;
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float blank = clamp(1.0 - splat_map.r - splat_map.g - splat_map.b, 0.0, 1.0);
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ALBEDO = blank * 0.5 * (texture(LAYER_1_ALBEDO, uv).rgb + texture(LAYER_1_ALBEDO, uv_alt).rgb);
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ALBEDO += splat_map.r * 0.5 * (texture(LAYER_2_ALBEDO, uv).rgb + texture(LAYER_2_ALBEDO, uv_alt).rgb);
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ALBEDO += splat_map.g * 0.5 * (texture(LAYER_3_ALBEDO, uv).rgb + texture(LAYER_3_ALBEDO, uv_alt).rgb);
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ALBEDO += splat_map.b * 0.5 * (texture(LAYER_4_ALBEDO, uv).rgb + texture(LAYER_4_ALBEDO, uv_alt).rgb);
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NORMAL_MAP = blank * 0.5 * (texture(LAYER_1_NORMAL_MAP, uv).rgb + texture(LAYER_1_NORMAL_MAP, uv_alt).rgb);
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NORMAL_MAP += splat_map.r * 0.5 * (texture(LAYER_1_NORMAL_MAP, uv).rgb + texture(LAYER_2_NORMAL_MAP, uv_alt).rgb);
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NORMAL_MAP += splat_map.g * 0.5 * (texture(LAYER_2_NORMAL_MAP, uv).rgb + texture(LAYER_3_NORMAL_MAP, uv_alt).rgb);
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NORMAL_MAP += splat_map.b * 0.5 * (texture(LAYER_3_NORMAL_MAP, uv).rgb + texture(LAYER_4_NORMAL_MAP, uv_alt).rgb);
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}
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float height(vec2 uv) {
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return MAX_HEIGHT * texture(TERRAIN_MAP, uv).a;
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}
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void vertex() {
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VERTEX.y = height(UV);
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float left = height(vec2(UV.x - 1.0, UV.y));
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float right = height(vec2(UV.x + 1.0, UV.y));
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float forward = height(vec2(UV.x, UV.y + 1.0));
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float backward = height(vec2(UV.x, UV.y - 1.0));
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NORMAL = normalize(vec3(left - right, 2.0, forward - forward));
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}
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