init commit

A basic window is available.  Now we shall try to render texts and
some auxiliary functionalities.

1 files changed, 20 insertions, 0 deletions

diff --git a/shaders/shader.vert b/shaders/shader.vert
new file mode 100644
index 0000000..9e38f9c
--- /dev/null
+++ b/shaders/shader.vert
@@ -0,0 +1,20 @@
+#version 450
+
+vec2 positions[3] = vec2[] (
+  vec2(0.0, -0.5),
+  vec2(0.5, 0.5),
+  vec2(-0.5, 0.5)
+);
+
+vec3 colors[3] = vec3[] (
+  vec3(1.0, 0.0, 0.0),
+  vec3(0.0, 1.0, 0.0),
+  vec3(0.0, 0.0, 1.0)
+);
+
+layout (location = 0) out vec3 fragmentColor;
+
+void main() {
+  gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
+  fragmentColor = colors[gl_VertexIndex];
+}