From ddb10abb037b400acb3d59be58fd5f87a8f4c2df Mon Sep 17 00:00:00 2001
From: Dane Johnson <dane_johnson@ymail.com>
Date: Tue, 19 Jan 2021 16:08:37 -0600
Subject: [PATCH] Added affine texture mapping
---
shaders/flat.frag | 4 ++--
shaders/flat.vert | 7 ++++---
2 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/shaders/flat.frag b/shaders/flat.frag
index c01559c..f77cb12 100644
--- a/shaders/flat.frag
+++ b/shaders/flat.frag
@@ -1,6 +1,6 @@
#version 330 core
-in vec2 UV;
+in vec3 UV;
out vec4 FragColor;
@@ -19,6 +19,6 @@ void main() {
FragColor += vec4(material.color, 1.0);
}
if (material.usesTex) {
- FragColor += texture(material.tex, UV);
+ FragColor += texture(material.tex, UV.xy / UV.z);
}
}
diff --git a/shaders/flat.vert b/shaders/flat.vert
index bce7223..e1fb98a 100644
--- a/shaders/flat.vert
+++ b/shaders/flat.vert
@@ -7,9 +7,10 @@ uniform mat4 MODEL;
uniform mat4 VIEW;
uniform mat4 PROJECTION;
-out vec2 UV;
+out vec3 UV;
void main() {
- gl_Position = PROJECTION * VIEW * MODEL * vec4(pos, 1.0);
- UV = uv;
+ vec4 vertex = PROJECTION * VIEW * MODEL * vec4(pos, 1.0);
+ gl_Position = vertex;
+ UV = vec3(uv * vertex.z, vertex.z);
}