2 files changed, 48 insertions, 0 deletions
diff --git a/cwd/shaders/gui.fs b/cwd/shaders/gui.fs
new file mode 100644
index 0000000..95196b9
--- /dev/null
+++ b/cwd/shaders/gui.fs
@@ -0,0 +1,21 @@
+#version 330 core
+
+in vec2 uv;
+
+uniform vec4 widgetTexture;
+uniform sampler2D textureAtlas;
+
+vec2 TransformTextureCoord(vec4 TextureAtlasCoords, vec2 UvCoords) {
+    float x = TextureAtlasCoords.x;
+    float y = TextureAtlasCoords.y;
+    float w = TextureAtlasCoords.z;
+    float h = TextureAtlasCoords.w;
+    vec2 A = vec2(x, 1 - y - h);
+    vec2 B = vec2(x + w, 1 - y);
+    return A + UvCoords * (B - A);
+}
+
+void main(){
+    vec4 color = texture(textureAtlas,TransformTextureCoord(widgetTexture,uv));
+    gl_FragColor = color;
+}
+\ No newline at end of file
diff --git a/cwd/shaders/gui.vs b/cwd/shaders/gui.vs
new file mode 100644
index 0000000..b6f848b
--- /dev/null
+++ b/cwd/shaders/gui.vs
@@ -0,0 +1,27 @@
+#version 330 core
+
+uniform vec4 transform;
+
+layout (location = 0) in vec3 position;
+layout (location = 1) in vec2 UvCoordinates;
+
+out vec2 uv;
+
+vec2 TransfromWidgetCoord() {
+    vec2 origin = vec2((transform.x * 2.0f) - 1.0f, (0.5 - transform.y) * 2.0f);
+
+    float x = transform.x;
+    float y = transform.y;
+    float w = transform.z;
+    float h = transform.w;
+    vec2 A = vec2(x, 1 - y - h);
+    vec2 B = vec2(x + w, 1 - y);
+    vec2 ret = vec2(A + position.xy * (B - A));
+    return vec2(ret.x-1.0f,ret.y);
+}
+
+void main(){
+    uv = UvCoordinates;
+
+    gl_Position = vec4(TransfromWidgetCoord(),0,1);
+}
+\ No newline at end of file