Godforge finale (#3080)

Co-authored-by: BucketBrigade <138534411+CookieBrigade@users.noreply.github.com>
Co-authored-by: Martin Robertz <dream-master@gmx.net>
Co-authored-by: serenibyss <10861407+serenibyss@users.noreply.github.com>

1 files changed, 77 insertions, 0 deletions

diff --git a/src/main/resources/assets/tectech/shaders/gorgeBeam.vert.glsl b/src/main/resources/assets/tectech/shaders/gorgeBeam.vert.glsl
new file mode 100644
index 0000000000..696d4d0df7
--- /dev/null
+++ b/src/main/resources/assets/tectech/shaders/gorgeBeam.vert.glsl
@@ -0,0 +1,77 @@
+#version 120
+
+attribute float a_VertexID;
+
+
+uniform float u_SegmentQuads;
+uniform float u_Time;
+
+//X = radius
+//Y = z offset
+//Z = transparency
+uniform vec3 u_SegmentArray[11];
+uniform vec3 u_CameraPosition;
+uniform mat4 u_ModelMatrix;
+
+
+
+varying vec2 v_TexCoord;
+varying vec2 v_localPosition;
+varying float v_Transparency;
+
+
+const float PI = 3.1415926535897;
+
+float getAngle(int quadID, int localID){
+    int id_offset = (localID > 1 && localID < 5)? 0:1;
+    return ((PI)*(quadID+id_offset))/u_SegmentQuads;
+}
+
+void main() {
+
+    int id = int(a_VertexID);
+    int segments = (u_SegmentArray.length()-1);
+    int quads = int(u_SegmentQuads);
+
+    int localID = int(mod(a_VertexID,6.0));   //Local id of the vertex within a face
+    int quadID = int(mod(float(id/6),quads)); //Local id of a quad within a segment
+    int segmentID = int(id/(quads*6));
+    segmentID = int(min(float(segmentID),float(segments-1)));
+
+    float radius0 = u_SegmentArray[segmentID].x;
+    float radius1 = u_SegmentArray[segmentID+1].x;
+
+    float offset0 = u_SegmentArray[segmentID].y;
+    float offset1 = u_SegmentArray[segmentID+1].y;
+
+    float trans0 = u_SegmentArray[segmentID].z;
+    float trans1 = u_SegmentArray[segmentID+1].z;
+
+    float slope = (radius1-radius0)/(offset1-offset0);
+
+
+    float cameraAngle = atan(u_CameraPosition.y,u_CameraPosition.x);
+    float staticAngle = getAngle(quadID,localID);
+
+
+    float angle = staticAngle+(cameraAngle-PI/2);
+
+    float offset = (localID > 0 && localID < 4)?offset0:offset1;
+    float radius = (localID > 0 && localID < 4)?radius0:radius1;
+    v_Transparency = (localID > 0 && localID < 4)?trans0:trans1;
+
+    //radius = min(radius,length(u_CameraPosition.xy));
+
+    vec3 localPosition = vec3(cos(angle)*radius,sin(angle)*radius,offset);
+    vec4 worldPosition = u_ModelMatrix*vec4(localPosition,1);
+
+    gl_Position = gl_ModelViewProjectionMatrix * worldPosition;
+
+    v_localPosition = localPosition.xy;
+
+    float timer = u_Time/240;
+
+    float heightOffset = (offset/256) + timer;
+    v_TexCoord = vec2(heightOffset,angle/(2*PI)+heightOffset/3 + timer);
+}
+