Files
MapLibreParticleLab/shaders/hillshade_prepare.vertex.glsl
mwilsnd 4828cc7a8b Upgrade OpenGL backend to ES 3.0 (#995)
Co-authored-by: Tadej Novak <tadej@tano.si>
2023-04-13 23:24:45 +02:00

16 lines
372 B
GLSL

uniform mat4 u_matrix;
uniform vec2 u_dimension;
layout (location = 0) in vec2 a_pos;
layout (location = 1) in vec2 a_texture_pos;
out vec2 v_pos;
void main() {
gl_Position = u_matrix * vec4(a_pos, 0, 1);
highp vec2 epsilon = 1.0 / u_dimension;
float scale = (u_dimension.x - 2.0) / u_dimension.x;
v_pos = (a_texture_pos / 8192.0) * scale + epsilon;
}