wasm replay ui

2 files changed, 57 insertions, 0 deletions

diff --git a/shaders/ui.frag.es.glsl b/shaders/ui.frag.es.glsl
new file mode 100644
index 00000000..736e48f5
--- /dev/null
+++ b/shaders/ui.frag.es.glsl
@@ -0,0 +1,16 @@
+#version 300 es
+
+precision mediump float;
+
+uniform sampler2D u_atlas;
+
+in vec2 v_uv;
+in vec3 v_fg;
+in vec3 v_bg;
+
+out vec4 o_col;
+
+void main() {
+    float a = texture(u_atlas, v_uv).r;
+    o_col = vec4(mix(v_bg, v_fg, a), 1.0);
+}
diff --git a/shaders/ui.vert.es.glsl b/shaders/ui.vert.es.glsl
new file mode 100644
index 00000000..271524be
--- /dev/null
+++ b/shaders/ui.vert.es.glsl
@@ -0,0 +1,41 @@
+#version 300 es
+
+precision mediump float;
+
+layout(location = 0) in vec4 a_rect;
+layout(location = 1) in vec4 a_uv_rect;
+layout(location = 2) in vec3 a_fg;
+layout(location = 3) in vec3 a_bg;
+
+out vec2 v_uv;
+out vec3 v_fg;
+out vec3 v_bg;
+
+void main() {
+    vec2 pos;
+    vec2 uv;
+    int corner = gl_VertexID % 6;
+    if (corner == 0) {
+        pos = vec2(a_rect.x, a_rect.y);
+        uv = vec2(a_uv_rect.x, a_uv_rect.y);
+    } else if (corner == 1) {
+        pos = vec2(a_rect.z, a_rect.y);
+        uv = vec2(a_uv_rect.z, a_uv_rect.y);
+    } else if (corner == 2) {
+        pos = vec2(a_rect.z, a_rect.w);
+        uv = vec2(a_uv_rect.z, a_uv_rect.w);
+    } else if (corner == 3) {
+        pos = vec2(a_rect.x, a_rect.y);
+        uv = vec2(a_uv_rect.x, a_uv_rect.y);
+    } else if (corner == 4) {
+        pos = vec2(a_rect.z, a_rect.w);
+        uv = vec2(a_uv_rect.z, a_uv_rect.w);
+    } else {
+        pos = vec2(a_rect.x, a_rect.w);
+        uv = vec2(a_uv_rect.x, a_uv_rect.w);
+    }
+    v_uv = uv;
+    v_fg = a_fg;
+    v_bg = a_bg;
+    gl_Position = vec4(pos, 0.0, 1.0);
+}