1 files changed, 27 insertions, 0 deletions
diff --git a/shaders/polygon.cc b/shaders/polygon.cc
new file mode 100644
index 0000000..c881475
--- /dev/null
+++ b/shaders/polygon.cc
@@ -0,0 +1,27 @@
+#include "shaders.hh"
+
+static int u_n = 3;
+static float u_bg[4] = { 0, 0, 0, 1 };
+static float u_fg[4] = { 1, 1, 1, 1 };
+
+static void ui()
+{
+  ImGui::SliderInt("N", &u_n, 3, 24);
+  ImGui::ColorPicker4("bg", u_bg);
+  ImGui::ColorPicker4("fg", u_fg);
+}
+
+static void uniforms(Shader* shader)
+{
+  GL(glUniform1i(shader->get_required_uniform("u_n"), u_n));
+  GL(glUniform4fv(shader->get_required_uniform("u_bg"), 1, u_bg));
+  GL(glUniform4fv(shader->get_required_uniform("u_fg"), 1, u_fg));
+}
+
+static Shader polygon = {
+  .path   = "polygon.glsl",
+  .model  = MODEL_QUAD,
+  .ui_fn  = ui,
+  .uf_fn  = uniforms,
+};
+ENABLE_SHADER(polygon);