From 6767fa1e5f917658b5801ad23808dea04211b36a Mon Sep 17 00:00:00 2001
From: Connor McLaughlin <stenzek@gmail.com>
Date: Wed, 28 Apr 2021 02:36:39 +1000
Subject: [PATCH] OpenGLHostDisplay: Disable scissor test before rendering

Fixes uncleared screen sections in OpenGL renderer.
---
 src/frontend-common/opengl_host_display.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/frontend-common/opengl_host_display.cpp b/src/frontend-common/opengl_host_display.cpp
index 15a2157ad..fcf5d969d 100644
--- a/src/frontend-common/opengl_host_display.cpp
+++ b/src/frontend-common/opengl_host_display.cpp
@@ -729,6 +729,7 @@ bool OpenGLHostDisplay::Render()
     return false;
   }
 
+  glDisable(GL_SCISSOR_TEST);
   glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
   glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
   glClear(GL_COLOR_BUFFER_BIT);
@@ -751,6 +752,7 @@ bool OpenGLHostDisplay::RenderScreenshot(u32 width, u32 height, std::vector<u32>
   if (!texture.Create(width, height, 1, GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, nullptr) || !texture.CreateFramebuffer())
     return false;
 
+  glDisable(GL_SCISSOR_TEST);
   texture.BindFramebuffer(GL_FRAMEBUFFER);
   glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
   glClear(GL_COLOR_BUFFER_BIT);
@@ -844,7 +846,6 @@ void OpenGLHostDisplay::RenderDisplay(s32 left, s32 bottom, s32 width, s32 heigh
   glDisable(GL_BLEND);
   glDisable(GL_CULL_FACE);
   glDisable(GL_DEPTH_TEST);
-  glDisable(GL_SCISSOR_TEST);
   glDepthMask(GL_FALSE);
   glBindTexture(GL_TEXTURE_2D, static_cast<GLuint>(reinterpret_cast<uintptr_t>(texture_handle)));
   m_display_program.Bind();
@@ -892,7 +893,6 @@ void OpenGLHostDisplay::RenderSoftwareCursor(s32 left, s32 bottom, s32 width, s3
   glBlendEquationSeparate(GL_FUNC_ADD, GL_FUNC_ADD);
   glDisable(GL_CULL_FACE);
   glDisable(GL_DEPTH_TEST);
-  glDisable(GL_SCISSOR_TEST);
   glDepthMask(GL_FALSE);
   m_cursor_program.Bind();
   glBindTexture(GL_TEXTURE_2D, static_cast<OpenGLHostDisplayTexture*>(texture_handle)->GetGLID());