servo/resources/shaders/ps_image_clip.vs.glsl
2016-08-03 10:14:42 +02:00

32 lines
1.2 KiB
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; // Location of the image texture in the texture atlas.
vec4 stretch_size; // Size of the actual image.
Clip clip;
};
layout(std140) uniform Items {
Image images[WR_MAX_PRIM_ITEMS];
};
void main(void) {
Image image = images[gl_InstanceID];
VertexInfo vi = write_vertex(image.info);
vClipRect = vec4(image.clip.rect.xy, image.clip.rect.xy + image.clip.rect.zw);
vClipRadius = vec4(image.clip.top_left.outer_inner_radius.x,
image.clip.top_right.outer_inner_radius.x,
image.clip.bottom_right.outer_inner_radius.x,
image.clip.bottom_left.outer_inner_radius.x);
vPos = vi.local_clamped_pos;
// vUv will contain how many times this image has wrapped around the image size.
vUv = (vi.local_clamped_pos - image.info.local_rect.xy) / image.stretch_size.xy;
vTextureSize = image.st_rect.zw - image.st_rect.xy;
vTextureOffset = image.st_rect.xy;
}