servo/resources/shaders/ps_image_transform.vs.glsl

29 lines
768 B
GLSL

#line 1
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
struct Image {
PrimitiveInfo info;
vec4 st_rect;
vec4 stretch_size; // Size of the actual image.
};
layout(std140) uniform Items {
Image images[WR_MAX_PRIM_ITEMS];
};
void main(void) {
Image image = images[gl_InstanceID];
TransformVertexInfo vi = write_transform_vertex(image.info);
vLocalRect = image.info.local_rect;
vLocalPos = vi.local_pos;
vec2 f = (vi.local_pos.xy - image.info.local_rect.xy) / image.info.local_rect.zw;
vUv = mix(image.st_rect.xy,
image.st_rect.zw,
f);
}