46 lines
1.4 KiB
GLSL
46 lines
1.4 KiB
GLSL
#version 450
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layout (location = 0) in vec3 aPos;
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layout (location = 1) in vec2 aTexCoords;
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out vec3 FragPos;
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out vec2 TexCoords;
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out vec3 Normal;
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uniform mat4 model;
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uniform mat4 view;
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uniform mat4 projection;
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uniform float uTime;
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// Wave configuration constants
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const float AMPLITUDE = 0.15;
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const float FREQUENCY = 1.5;
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const float SPEED = 2.0;
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// Simple wave function that modifies elevation based on position and time
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float calculateWave(vec3 pos, float time, vec2 direction) {
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return AMPLITUDE * sin(dot(pos.xz, direction) * FREQUENCY + time * SPEED);
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}
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// Derivative of the wave function to calculate accurate dynamic surface normals
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vec3 calculateWaveNormal(vec3 pos, float time) {
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float dx = AMPLITUDE * FREQUENCY * cos(pos.x * FREQUENCY + time * SPEED);
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float dz = AMPLITUDE * FREQUENCY * cos(pos.z * FREQUENCY + time * SPEED);
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return normalize(vec3(-dx, 1.0, -dz));
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}
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void main() {
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vec3 displacedPos = aPos;
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// Combine two wave directions for a less predictable, more organic look
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displacedPos.y += calculateWave(aPos, uTime, vec2(1.0, 0.0));
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displacedPos.y += calculateWave(aPos, uTime * 1.2, vec2(0.5, 0.8));
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FragPos = vec3(model * vec4(displacedPos, 1.0));
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TexCoords = aTexCoords;
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// Pass transformed normals and position to the fragment shader
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Normal = mat3(transpose(inverse(model))) * calculateWaveNormal(displacedPos, uTime);
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gl_Position = projection * view * model * vec4(displacedPos, 1.0);
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}
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