From 1eca380886b5028e027f1380c04f221ac94ed47d Mon Sep 17 00:00:00 2001
From: wwylele <wwylele@gmail.com>
Date: Thu, 17 Aug 2017 10:46:59 +0300
Subject: gl_rasterizer: add clipping plane z<=0 defined in PICA

---
 src/video_core/renderer_opengl/gl_state.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'src/video_core/renderer_opengl/gl_state.cpp')

diff --git a/src/video_core/renderer_opengl/gl_state.cpp b/src/video_core/renderer_opengl/gl_state.cpp
index bc9d34b84..06a905766 100644
--- a/src/video_core/renderer_opengl/gl_state.cpp
+++ b/src/video_core/renderer_opengl/gl_state.cpp
@@ -68,6 +68,8 @@ OpenGLState::OpenGLState() {
     draw.vertex_buffer = 0;
     draw.uniform_buffer = 0;
     draw.shader_program = 0;
+
+    clip_distance = {};
 }
 
 void OpenGLState::Apply() const {
@@ -261,6 +263,17 @@ void OpenGLState::Apply() const {
         glUseProgram(draw.shader_program);
     }
 
+    // Clip distance
+    for (size_t i = 0; i < clip_distance.size(); ++i) {
+        if (clip_distance[i] != cur_state.clip_distance[i]) {
+            if (clip_distance[i]) {
+                glEnable(GL_CLIP_DISTANCE0 + i);
+            } else {
+                glDisable(GL_CLIP_DISTANCE0 + i);
+            }
+        }
+    }
+
     cur_state = *this;
 }
 
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