66 lines
2.0 KiB
GLSL
66 lines
2.0 KiB
GLSL
#line 2
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/*
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* Copyright (c) 2023 LAX1DUDE. All Rights Reserved.
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*
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* WITH THE EXCEPTION OF PATCH FILES, MINIFIED JAVASCRIPT, AND ALL FILES
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* NORMALLY FOUND IN AN UNMODIFIED MINECRAFT RESOURCE PACK, YOU ARE NOT ALLOWED
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* TO SHARE, DISTRIBUTE, OR REPURPOSE ANY FILE USED BY OR PRODUCED BY THE
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* SOFTWARE IN THIS REPOSITORY WITHOUT PRIOR PERMISSION FROM THE PROJECT AUTHOR.
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*
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* NOT FOR COMMERCIAL OR MALICIOUS USE
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*
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* (please read the 'LICENSE' file this repo's root directory for more info)
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*
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*/
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precision lowp int;
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precision highp float;
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precision highp sampler2D;
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layout(location = 0) in vec2 a_position2f;
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layout(location = 1) in vec2 e_elementOffsetScale;
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layout(location = 2) in vec4 e_elementTexture4f;
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layout(location = 3) in vec3 e_elementColor3f;
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out vec2 v_texcoord2f;
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out vec3 v_color3f;
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out float v_occlusion1f;
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uniform sampler2D u_exposureValue;
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uniform sampler2D u_sunOcclusionValue;
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uniform vec2 u_sunPosition2f;
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uniform float u_aspectRatio1f;
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uniform float u_baseScale1f;
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#define FAKE_SIN(valueIn, valueOut)\
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valueOut = abs(1.0 - fract(valueIn * 0.159155) * 2.0);\
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valueOut = valueOut * valueOut * (3.0 - 2.0 * valueOut) * 2.0 - 1.0;
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void main() {
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v_occlusion1f = max(textureLod(u_sunOcclusionValue, vec2(0.5, 0.5), 0.0).r * 1.5 - 0.5, 0.0);
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if(v_occlusion1f == 0.0) {
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gl_Position = vec4(-10.0, -10.0, -10.0, 1.0);
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return;
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}
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v_texcoord2f = e_elementTexture4f.xy + (a_position2f * 0.5 + 0.5) * e_elementTexture4f.zw;
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float r = textureLod(u_exposureValue, vec2(0.5, 0.5), 0.0).r * 7.5;
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mat2 rotationMatrix;
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FAKE_SIN(vec2(r + 1.570795, r), rotationMatrix[0])
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rotationMatrix[1].x = -rotationMatrix[0].y;
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rotationMatrix[1].y = rotationMatrix[0].x;
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vec2 transformedVertex = rotationMatrix * (a_position2f * u_baseScale1f * e_elementOffsetScale.y / (4.0 + r * 0.75));
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transformedVertex.x *= u_aspectRatio1f;
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transformedVertex += u_sunPosition2f * (1.0 - e_elementOffsetScale.x);
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v_color3f = e_elementColor3f * (0.05 + dot(u_sunPosition2f, u_sunPosition2f));
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gl_Position = vec4(transformedVertex, 0.0, 1.0);
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}
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