update

assets/shaders/2d-solid.fragment.glsl

@@ -0,0 +1,10 @@
+#version 330 core
+out vec4 frag_color;
+
+uniform vec3 color;
+
+in vec2 uv;
+
+void main() {
+    frag_color = vec4(color, 0.0);
+};

assets/shaders/2d-tex.fragment.glsl

@@ -0,0 +1,10 @@
+#version 330 core
+out vec4 frag_color;
+
+uniform sampler2D texture;
+
+in vec2 uv;
+
+void main() {
+    frag_color = texture(texture, uv);
+};

assets/shaders/2d.vertex.glsl

@@ -0,0 +1,12 @@
+#version 330 core
+layout (location = 0) in vec2 xy;
+layout (location = 1) in vec2 uv;
+
+uniform mat4 projection;
+
+out vec2 tex_coord;
+
+void main() {
+    gl_Position = projection * vec4(xy, 0.0, 1.0);
+    tex_coord = uv;
+}