118 lines
2.7 KiB
GLSL
118 lines
2.7 KiB
GLSL
#version 120
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uniform mat4 transform;
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uniform vec3 cameraPos;
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uniform vec3 sunDir;
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uniform vec3 sunColor;
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uniform vec2 textureTransform;
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uniform vec2 losTransform;
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uniform mat4 shadowTransform;
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#if USE_SHADOW_SAMPLER && USE_SHADOW_PCF
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uniform vec4 shadowScale;
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#endif
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varying vec3 v_lighting;
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#if USE_SHADOW
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varying vec4 v_shadow;
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#endif
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varying vec2 v_los;
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varying vec2 v_blend;
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#if USE_TRIPLANAR
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varying vec3 v_tex;
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#else
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varying vec2 v_tex;
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#endif
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varying vec3 v_normal;
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#if USE_SPECULAR || USE_NORMAL_MAP || USE_SPECULAR_MAP || USE_PARALLAX_MAP
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#if USE_NORMAL_MAP || USE_PARALLAX_MAP
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varying vec4 v_tangent;
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varying vec3 v_bitangent;
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#endif
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#if USE_SPECULAR || USE_SPECULAR_MAP
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varying vec3 v_half;
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#endif
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#if USE_PARALLAX_MAP
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varying vec3 v_eyeVec;
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#endif
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#endif
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attribute vec3 a_vertex;
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attribute vec3 a_normal;
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attribute vec3 a_color;
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attribute vec2 a_uv0;
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attribute vec2 a_uv1;
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void main()
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{
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vec4 position = vec4(a_vertex, 1.0);
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#if USE_GRASS && LAYER
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position.y = a_vertex.y + (a_normal.y * 0.015 * LAYER);
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#endif
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gl_Position = transform * position;
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v_lighting = a_color * sunColor;
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#if DECAL
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v_tex.xy = a_uv0;
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#else
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#if USE_TRIPLANAR
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v_tex = a_vertex;
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#else
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// Compute texcoords from position and terrain-texture-dependent transform
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float c = textureTransform.x;
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float s = -textureTransform.y;
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v_tex = vec2(a_vertex.x * c + a_vertex.z * -s, a_vertex.x * -s + a_vertex.z * -c);
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#endif
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#if GL_ES
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// XXX: Ugly hack to hide some precision issues in GLES
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v_tex = mod(v_tex, vec2(9.0, 9.0));
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#endif
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#endif
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#if BLEND
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v_blend = a_uv1;
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#endif
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#if USE_SHADOW
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v_shadow = shadowTransform * vec4(a_vertex, 1.0);
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#if USE_SHADOW_SAMPLER && USE_SHADOW_PCF
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v_shadow.xy *= shadowScale.xy;
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#endif
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#endif
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v_normal = a_normal;
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#if USE_SPECULAR || USE_NORMAL_MAP || USE_SPECULAR_MAP || USE_PARALLAX_MAP || USE_TRIPLANAR
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#if USE_NORMAL_MAP || USE_PARALLAX_MAP
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vec3 t = vec3(1.0, 0.0, 0.0);
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t = normalize(t - v_normal * dot(v_normal, t));
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v_tangent = vec4(t, -1.0);
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v_bitangent = cross(v_normal, t);
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#endif
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#if USE_SPECULAR || USE_SPECULAR_MAP || USE_PARALLAX_MAP
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vec3 eyeVec = cameraPos.xyz - position.xyz;
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#if USE_SPECULAR || USE_SPECULAR_MAP
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vec3 sunVec = -sunDir;
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v_half = normalize(sunVec + normalize(eyeVec));
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#endif
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#if USE_PARALLAX_MAP
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v_eyeVec = eyeVec;
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#endif
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#endif
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#endif
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v_los = a_vertex.xz * losTransform.x + losTransform.yy;
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}
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