1 files changed, 45 insertions, 0 deletions
diff --git a/engine-ocean/Resources/Shaders/water.vert b/engine-ocean/Resources/Shaders/water.vert
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+++ b/engine-ocean/Resources/Shaders/water.vert
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+#version 330 core
+
+// All in object space
+layout (location = 0) in vec3 pos;
+layout (location = 1) in vec3 norm;
+layout (location = 2) in vec2 uv;
+layout (location = 3) in vec3 color;
+
+uniform mat4 model, view, projection;
+uniform vec3 worldSpace_camPos;
+
+//out vec3 worldSpace_norm;
+out vec2 tex_coord;
+out vec3 vertColor;
+out float visibility;
+out vec4 clipSpace;
+out vec3 toCameraVector;
+
+// fog
+const float density = .01f;
+const float gradient = 4.f;
+
+const float tiling = 6.f;
+
+vec4 worldSpace_pos;
+
+// water referenced from: ThinMatrix https://www.youtube.com/watch?v=qgDPSnZPGMA
+
+void main() {
+    worldSpace_pos = view*model*vec4(pos, 1.0);
+    //worldSpace_norm = vec3(transpose(inverse(model))*vec4(norm, 0.0));
+
+    vec4 positionRelationToCam = view * vec4(pos, 1.f);
+    float distance = length(positionRelationToCam.xyz);
+    visibility = exp(-pow((distance*density), gradient));
+    visibility = clamp(visibility, 0.f, 1.f);
+
+    tex_coord = uv*tiling;
+    vertColor = color;
+
+    clipSpace = projection*worldSpace_pos;
+    gl_Position = clipSpace;
+
+    toCameraVector = worldSpace_camPos - worldSpace_pos.xyz;
+}