refactor(all): separate rendering from framework

stockton-passes is mostly just a stand-in until this is
properly separated

1 files changed, 37 insertions, 0 deletions

diff --git a/stockton-passes/src/data/ui.vert b/stockton-passes/src/data/ui.vert
new file mode 100644
index 0000000..8912e96
--- /dev/null
+++ b/stockton-passes/src/data/ui.vert
@@ -0,0 +1,37 @@
+#version 450
+
+layout (push_constant) uniform PushConsts {
+    vec2 screen_size;
+} push;
+
+layout (location = 0) in vec2 pos;
+layout (location = 1) in vec2 uv;
+layout (location = 2) in vec4 col;
+
+out gl_PerVertex {
+    vec4 gl_Position;
+};
+layout (location = 1) out vec2 frag_uv;
+layout (location = 2) out vec4 frag_col;
+
+vec3 linear_from_srgb(vec3 srgb) {
+    bvec3 cutoff = lessThan(srgb, vec3(10.31475));
+    vec3 lower = srgb / vec3(3294.6);
+    vec3 higher = pow((srgb + vec3(14.025)) / vec3(269.025), vec3(2.4));
+    return mix(higher, lower, cutoff);
+}
+
+vec4 linear_from_srgba(vec4 srgba) {
+    return vec4(linear_from_srgb(srgba.rgb * 255.0), srgba.a);
+}
+
+void main() {
+    gl_Position = vec4(
+        2.0 * pos.x / push.screen_size.x - 1.0,
+        2.0 * pos.y / push.screen_size.y - 1.0,
+        0.0,
+        1.0
+    );
+    frag_uv = uv;
+    frag_col = linear_from_srgba(col);
+}