xemu/ui/shader/texture-blit-flip.vert
Gerd Hoffmann 2e1d70b9e0 opengl: add flipping vertex shader
Add vertex shader which flips the texture upside down while blitting it.
Add argument to qemu_gl_run_texture_blit() to enable flipping.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20171010135453.6704-4-kraxel@redhat.com
2017-10-17 10:25:42 +02:00

11 lines
204 B
GLSL

#version 300 es
in vec2 in_position;
out vec2 ex_tex_coord;
void main(void) {
gl_Position = vec4(in_position, 0.0, 1.0);
ex_tex_coord = vec2(1.0 + in_position.x, 1.0 + in_position.y) * 0.5;
}