From 68cdb253db339af425488dc879831d14df62e7b3 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Tue, 19 Nov 2019 20:32:01 -0300
Subject: [PATCH] gl_shader_gen: Apply default value to gl_Position

Nvidia has sane default output values for varyings, but the other
vendors don't apply these. To properly emulate this we would have to
analyze the shader header. For the time being, apply the same default
Nvidia applies so we get the same behaviour on non-Nvidia drivers.
---
 src/video_core/renderer_opengl/gl_shader_gen.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/video_core/renderer_opengl/gl_shader_gen.cpp b/src/video_core/renderer_opengl/gl_shader_gen.cpp
index af17216bdb..a63c1a6b8d 100644
--- a/src/video_core/renderer_opengl/gl_shader_gen.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_gen.cpp
@@ -32,6 +32,7 @@ layout (std140, binding = EMULATION_UBO_BINDING) uniform vs_config {
 
     out += R"(
 void main() {
+    gl_Position = vec4(0.0f, 0.0f, 0.0f, 1.0f);
     execute_vertex();
 )";
     if (ir_b) {