75 lines
1.9 KiB
GLSL
75 lines
1.9 KiB
GLSL
#version 330 core
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in VS_OUT {
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vec3 Position; // world coordinates
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vec3 BlockPosition;
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vec3 Normal;
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vec2 Texture;
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flat int BlockID;
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flat int Data;
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} fs_in;
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layout (location = 0) out vec3 Position;
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layout (location = 1) out vec3 Normal;
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layout (location = 2) out vec3 Color;
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uniform sampler2D TerrainSampler;
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uniform vec3 MousePosition;
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uniform vec3 MousePosition2;
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layout (std140) uniform TextureID
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{
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ivec4 block_id_to_texture_id[256 / 4];
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};
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int wool[16] = int[16]( 64, // 0 64
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210, // 32 208
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194, // 32 192
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178, // 32 176
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162, // 32 160
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146, // 32 144
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130, // 32 128
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114, // 32 112
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225, // 16 224
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209, // 16 208
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193, // 16 192
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177, // 16 176
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161, // 16 160
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145, // 16 144
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129, // 16 128
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113 // 16 112
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);
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void main()
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{
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int terrain_ix;
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if (fs_in.BlockID == 35) // cloth
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terrain_ix = wool[fs_in.Data];
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else
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terrain_ix = block_id_to_texture_id[fs_in.BlockID / 4][fs_in.BlockID % 4];
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int terrain_x = terrain_ix % 16;
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int terrain_y = terrain_ix / 16;
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ivec2 coord = ivec2(terrain_x, terrain_y) * 16;
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coord += ivec2(fs_in.Texture.xy * 16.0);
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vec4 texture_color = texelFetch(TerrainSampler, coord, 0);
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if (texture_color.w != 1.0) {
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discard;
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return;
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}
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if (fs_in.BlockID == 18 || fs_in.BlockID == 31) // leaves
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texture_color.xyz *= vec3(0.125, 0.494, 0.027);
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Position = fs_in.Position.xzy;
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Normal = normalize(fs_in.Normal.xzy);
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if (length(fs_in.BlockPosition - floor(MousePosition.xzy)) < 1)
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Color = vec3(0, 1, 0);
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else if (length(fs_in.BlockPosition - floor(MousePosition.xzy)) <= 1)
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Color = vec3(0, 0.5, 0);
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else
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Color = texture_color.xyz;
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}
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