29 lines
679 B
Plaintext
29 lines
679 B
Plaintext
in vec2 position;
|
|
in vec2 texcoord;
|
|
|
|
uniform vec2 verOffsetXY;
|
|
uniform vec2 verSizeWH;
|
|
uniform vec2 viewport;
|
|
uniform UBOOL snapToGrid;
|
|
|
|
out vec2 Texcoord;
|
|
|
|
void main() {
|
|
Texcoord = texcoord;
|
|
|
|
// Coordinates are [0.0; 1.0], transform to [-1.0; 1.0]
|
|
vec2 pos = verOffsetXY + position * verSizeWH;
|
|
|
|
if (UBOOL_TEST(snapToGrid)) {
|
|
// Align vertex coordinates to the native pixel grid
|
|
// This ensures text does not get garbled by nearest neighbors scaling
|
|
pos.x = floor(pos.x * viewport.x + 0.5) / viewport.x;
|
|
pos.y = floor(pos.y * viewport.y + 0.5) / viewport.y;
|
|
}
|
|
|
|
pos.x = pos.x * 2.0 - 1.0;
|
|
pos.y = -1.0 * (pos.y * 2.0 - 1.0);
|
|
|
|
gl_Position = vec4(pos, 0.0, 1.0);
|
|
}
|