15 lines
447 B
GLSL
15 lines
447 B
GLSL
#ifdef GL_ES
|
|
precision highp float;
|
|
#endif
|
|
// size of the complete display in pixels, x==width, y==height
|
|
uniform vec2 displaySize;
|
|
// geometry of the window/texture to be rendered: x, y, width, height in display geometry
|
|
uniform vec4 geometry;
|
|
|
|
// passed in vertex - only x and y are used
|
|
attribute vec4 vertex;
|
|
|
|
void main() {
|
|
gl_Position.xy = 2.0*vec2(geometry.x + vertex.x, displaySize.y - vertex.y - geometry.y)/displaySize - vertex.ww;
|
|
}
|