From 273979405d4730491ac094c008a0e567ce3ccaad Mon Sep 17 00:00:00 2001
From: Stenzek <stenzek@gmail.com>
Date: Sat, 25 Nov 2023 00:49:49 +1000
Subject: [PATCH] OpenGLDevice: Disable scissor for buffer clears

---
 src/util/opengl_device.cpp  | 4 ++++
 src/util/opengl_texture.cpp | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/src/util/opengl_device.cpp b/src/util/opengl_device.cpp
index 429801f27..a3d961462 100644
--- a/src/util/opengl_device.cpp
+++ b/src/util/opengl_device.cpp
@@ -600,7 +600,9 @@ void OpenGLDevice::SetSwapInterval()
 void OpenGLDevice::RenderBlankFrame()
 {
   glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
+  glDisable(GL_SCISSOR_TEST);
   glClearBufferfv(GL_COLOR, 0, s_clear_color.data());
+  glEnable(GL_SCISSOR_TEST);
   m_gl_context->SwapBuffers();
   glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_current_framebuffer ? m_current_framebuffer->GetGLId() : 0);
 }
@@ -696,7 +698,9 @@ bool OpenGLDevice::BeginPresent(bool skip_present)
   }
 
   glBindFramebuffer(GL_FRAMEBUFFER, 0);
+  glDisable(GL_SCISSOR_TEST);
   glClearBufferfv(GL_COLOR, 0, s_clear_color.data());
+  glEnable(GL_SCISSOR_TEST);
 
   const Common::Rectangle<s32> window_rc =
     Common::Rectangle<s32>::FromExtents(0, 0, m_window_info.surface_width, m_window_info.surface_height);
diff --git a/src/util/opengl_texture.cpp b/src/util/opengl_texture.cpp
index f3365298e..966f8ff69 100644
--- a/src/util/opengl_texture.cpp
+++ b/src/util/opengl_texture.cpp
@@ -484,12 +484,16 @@ void OpenGLDevice::CommitClear(OpenGLTexture* tex)
         if (tex->IsDepthStencil())
         {
           const float depth = tex->GetClearDepth();
+          glDisable(GL_SCISSOR_TEST);
           glClearBufferfv(GL_DEPTH, 0, &depth);
+          glEnable(GL_SCISSOR_TEST);
         }
         else
         {
           const auto color = tex->GetUNormClearColor();
+          glDisable(GL_SCISSOR_TEST);
           glClearBufferfv(GL_COLOR, 0, color.data());
+          glEnable(GL_SCISSOR_TEST);
         }
 
         glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, attachment, GL_TEXTURE_2D, 0, 0);
@@ -526,7 +530,9 @@ void OpenGLDevice::CommitClear(OpenGLFramebuffer* fb)
       case GPUTexture::State::Cleared:
       {
         const auto color = FB->GetUNormClearColor();
+        glDisable(GL_SCISSOR_TEST);
         glClearBufferfv(GL_COLOR, 0, color.data());
+        glEnable(GL_SCISSOR_TEST);
         FB->SetState(GPUTexture::State::Dirty);
       }
 
@@ -552,7 +558,9 @@ void OpenGLDevice::CommitClear(OpenGLFramebuffer* fb)
       case GPUTexture::State::Cleared:
       {
         const float depth = DS->GetClearDepth();
+        glDisable(GL_SCISSOR_TEST);
         glClearBufferfv(GL_DEPTH, 0, &depth);
+        glEnable(GL_SCISSOR_TEST);
         DS->SetState(GPUTexture::State::Dirty);
       }
       break;