22 lines
682 B
GLSL
22 lines
682 B
GLSL
#include <OgreUnifiedShader.h>
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// Directional light extrude - FINITE
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uniform mat4 worldviewproj_matrix;
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uniform vec4 light_position_object_space; // homogenous, object space
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uniform float shadow_extrusion_distance; // how far to extrude
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MAIN_PARAMETERS
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IN(vec4 uv0, TEXCOORD0)
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IN(vec4 position, POSITION)
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MAIN_DECLARATION
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{
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// Extrusion in object space
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// Vertex unmodified if w==1, extruded if w==0
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vec3 extrusionDir = - light_position_object_space.xyz;
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extrusionDir = normalize(extrusionDir);
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vec4 newpos = vec4(position.xyz +
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((1.0 - uv0.x) * shadow_extrusion_distance * extrusionDir), 1.0);
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gl_Position = mul(worldviewproj_matrix, newpos);
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} |