4 files changed, 32 insertions, 2 deletions
diff --git a/shaders/fragment.frag b/shaders/fragment.frag
index 60791c2..b078a58 100644
--- a/shaders/fragment.frag
+++ b/shaders/fragment.frag
@@ -1,9 +1,11 @@
 #version 330 core
 
+in vec2 texcoord_frag;
+
 out vec4 out_color;
 
-uniform vec3 triangle_color;
+uniform sampler2D tex;
 
 void main() {
-    out_color = vec4(triangle_color, 1.0);
+    out_color = texture(tex, texcoord_frag);
 }
 \ No newline at end of file
diff --git a/shaders/sand_fragment.frag b/shaders/sand_fragment.frag
new file mode 100644
index 0000000..60791c2
--- /dev/null
+++ b/shaders/sand_fragment.frag
@@ -0,0 +1,9 @@
+#version 330 core
+
+out vec4 out_color;
+
+uniform vec3 triangle_color;
+
+void main() {
+    out_color = vec4(triangle_color, 1.0);
+}
+\ No newline at end of file
diff --git a/shaders/sand_vertex.vert b/shaders/sand_vertex.vert
new file mode 100644
index 0000000..f254dbc
--- /dev/null
+++ b/shaders/sand_vertex.vert
@@ -0,0 +1,15 @@
+#version 330 core
+
+in vec3 position;
+
+uniform float time;
+
+uniform mat4 proj;
+uniform mat4 view;
+uniform mat4 model;
+
+void main() {
+    vec3 pos = position;
+    pos.z = sin(pos.x + time) * cos(pos.y + time);
+    gl_Position = proj * view * model * vec4(pos, 1.0);
+}
+\ No newline at end of file
diff --git a/shaders/vertex.vert b/shaders/vertex.vert
index a44217b..0796652 100644
--- a/shaders/vertex.vert
+++ b/shaders/vertex.vert
@@ -1,11 +1,15 @@
 #version 330 core
 
 in vec3 position;
+in vec2 texcoord_vert;
+
+out vec2 texcoord_frag;
 
 uniform mat4 proj;
 uniform mat4 view;
 uniform mat4 model;
 
 void main() {
+    texcoord_frag = texcoord_vert;
     gl_Position = proj * view * model * vec4(position, 1.0);
 }
 \ No newline at end of file