From 84cdf90dc0a9fa81fa0b0cd20470994e571751f4 Mon Sep 17 00:00:00 2001
From: Victor Polevoy <v.polevoy@sirena2000.ru>
Date: Mon, 1 Aug 2016 14:56:20 +0300
Subject: [PATCH] Added shaders for drawing a triangle

---
 code/shaders/shader.frag | 10 ++++++++++
 code/shaders/shader.vert | 25 +++++++++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 code/shaders/shader.frag
 create mode 100644 code/shaders/shader.vert

diff --git a/code/shaders/shader.frag b/code/shaders/shader.frag
new file mode 100644
index 00000000..84daf5e0
--- /dev/null
+++ b/code/shaders/shader.frag
@@ -0,0 +1,10 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout(location = 0) in vec3 fragColor;
+
+layout(location = 0) out vec4 outColor;
+
+void main() {
+    outColor = vec4(fragColor, 1.0);
+}
diff --git a/code/shaders/shader.vert b/code/shaders/shader.vert
new file mode 100644
index 00000000..d38f8152
--- /dev/null
+++ b/code/shaders/shader.vert
@@ -0,0 +1,25 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+out gl_PerVertex {
+    vec4 gl_Position;
+};
+
+layout(location = 0) out vec3 fragColor;
+
+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)
+);
+
+void main() {
+    gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
+    fragColor = colors[gl_VertexIndex];
+}