22 lines
463 B
Plaintext
22 lines
463 B
Plaintext
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/* Vertex position in screen space */
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layout(location=0) in vec2 a_vertex;
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/* Same in texture space */
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layout(location=1) in vec2 a_texture_pos;
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/* Location in image space */
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out vec2 v_position;
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uniform vec3 u_windowSize;
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void main() {
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v_position = a_texture_pos;
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float w = u_windowSize.x / 2.0;
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float h = u_windowSize.y / 2.0;
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gl_Position.x = (a_vertex.x - w) / w;
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gl_Position.y = -(a_vertex.y - h) / h;
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gl_Position.z = 0.0;
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gl_Position.w = 1.0;
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}
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