Implement basic image rendering in iced_wgpu

wgpu/src/shader/image.frag

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+#version 450
+
+layout(location = 0) in vec2 v_Uv;
+
+layout(set = 0, binding = 1) uniform sampler u_Sampler;
+layout(set = 1, binding = 0) uniform texture2D u_Texture;
+
+layout(location = 0) out vec4 o_Color;
+
+void main() {
+    o_Color = texture(sampler2D(u_Texture, u_Sampler), v_Uv);
+}

wgpu/src/shader/image.vert

@@ -0,0 +1,24 @@
+#version 450
+
+layout(location = 0) in vec2 v_Pos;
+layout(location = 1) in vec2 i_Pos;
+layout(location = 2) in vec2 i_Scale;
+
+layout (set = 0, binding = 0) uniform Globals {
+    mat4 u_Transform;
+};
+
+layout(location = 0) out vec2 o_Uv;
+
+void main() {
+    o_Uv = v_Pos;
+
+    mat4 i_Transform = mat4(
+        vec4(i_Scale.x, 0.0, 0.0, 0.0),
+        vec4(0.0, i_Scale.y, 0.0, 0.0),
+        vec4(0.0, 0.0, 1.0, 0.0),
+        vec4(i_Pos, 0.0, 1.0)
+    );
+
+    gl_Position = u_Transform * i_Transform * vec4(v_Pos, 0.0, 1.0);
+}