From b8ef2a4622c1cb69604afa4406f1ef59d88052d3 Mon Sep 17 00:00:00 2001
From: Mykhailo Parfeniuk <sopyer@gmail.com>
Date: Fri, 18 Aug 2017 20:52:00 +0300
Subject: [PATCH] Fullscreen triangle

---
 .gitignore                 |  1 +
 main.c                     |  4 ++--
 shaders/fullscreentri.vert | 27 +++++++++++++++++++++++++++
 shaders/rtprimitives.frag  | 11 +++++++++++
 4 files changed, 41 insertions(+), 2 deletions(-)
 create mode 100644 shaders/fullscreentri.vert
 create mode 100644 shaders/rtprimitives.frag

diff --git a/.gitignore b/.gitignore
index 9c7a218..7f4884e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,4 +14,5 @@ ipch/
 *.VC.db
 *.vspx
 *.tmp
+*.spv*
 
diff --git a/main.c b/main.c
index abe8635..e4e8891 100644
--- a/main.c
+++ b/main.c
@@ -428,8 +428,8 @@ VkPipeline pipeline;
 
 int createPipeline()
 {
-    VkShaderModule vertexShader = createShaderModule("shaders\\shader.vert.spv");
-    VkShaderModule fragmentShader = createShaderModule("shaders\\shader.frag.spv");
+    VkShaderModule vertexShader = createShaderModule("shaders\\fullscreentri.vert.spv");
+    VkShaderModule fragmentShader = createShaderModule("shaders\\rtprimitives.frag.spv");
 
     const VkPipelineShaderStageCreateInfo stages[] = {
         {
diff --git a/shaders/fullscreentri.vert b/shaders/fullscreentri.vert
new file mode 100644
index 0000000..b923309
--- /dev/null
+++ b/shaders/fullscreentri.vert
@@ -0,0 +1,27 @@
+#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(-1.0,  1.0),
+    vec2(-1.0, -3.0),
+    vec2( 3.0,  1.0)
+);
+
+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];
+}
diff --git a/shaders/rtprimitives.frag b/shaders/rtprimitives.frag
new file mode 100644
index 0000000..81b8e37
--- /dev/null
+++ b/shaders/rtprimitives.frag
@@ -0,0 +1,11 @@
+#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);
+}