diff options
Diffstat (limited to 'render/gles2/shaders.c')
| -rw-r--r-- | render/gles2/shaders.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/render/gles2/shaders.c b/render/gles2/shaders.c index 46a10248..38c61f9c 100644 --- a/render/gles2/shaders.c +++ b/render/gles2/shaders.c @@ -50,6 +50,7 @@ const GLchar ellipse_fragment_src[] = // Textured quads const GLchar vertex_src[] = "uniform mat4 proj;" +"uniform bool invert_y;" "attribute vec2 pos;" "attribute vec2 texcoord;" "varying vec2 v_texcoord;" @@ -69,7 +70,11 @@ const GLchar vertex_src[] = "}" "void main() {" " gl_Position = transpose(proj) * vec4(pos, 0.0, 1.0);" -" v_texcoord = texcoord;" +" if (invert_y) {" +" v_texcoord = vec2(texcoord.s, 1.0 - texcoord.t);" +" } else {" +" v_texcoord = texcoord;" +" }" "}"; const GLchar fragment_src_rgba[] = |