png支持

shaders/textured_quad.frag

@@ -0,0 +1,11 @@
+#version 450
+
+layout(binding = 0) uniform sampler2D u_texture;
+
+layout(location = 0) in vec4 v_color;
+layout(location = 1) in vec2 v_uv;
+layout(location = 0) out vec4 out_color;
+
+void main() {
+    out_color = texture(u_texture, v_uv) * v_color;
+}