From 2dfab0ac69b593d5cdc8165d61945486e3ac6db3 Mon Sep 17 00:00:00 2001
From: KojoZero <kwaku.kiriguya@gmail.com>
Date: Thu, 23 Apr 2026 20:59:13 -0700
Subject: [PATCH] fixed rfrag_tex_coord y axis, prototyping cursor position

---
 src/video_core/host_shaders/opengl_present.frag    | 2 +-
 src/video_core/renderer_opengl/renderer_opengl.cpp | 4 +++-
 src/video_core/renderer_opengl/renderer_opengl.h   | 1 +
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/video_core/host_shaders/opengl_present.frag b/src/video_core/host_shaders/opengl_present.frag
index 067eaecb4..ef8610a34 100644
--- a/src/video_core/host_shaders/opengl_present.frag
+++ b/src/video_core/host_shaders/opengl_present.frag
@@ -17,7 +17,7 @@ uniform int layer;
 in vec2 pixelUnit;
 void main() {
     vec4 pixel = texture(color_texture, frag_tex_coord);
-    vec2 rfrag_tex_coord = vec2(frag_tex_coord.yx);
+    vec2 rfrag_tex_coord = vec2(frag_tex_coord.y, 1.0 - frag_tex_coord.x);
     //Cursor
     if (cursor_enable){
         //Black Outline
diff --git a/src/video_core/renderer_opengl/renderer_opengl.cpp b/src/video_core/renderer_opengl/renderer_opengl.cpp
index 45dd4d5d4..441475838 100644
--- a/src/video_core/renderer_opengl/renderer_opengl.cpp
+++ b/src/video_core/renderer_opengl/renderer_opengl.cpp
@@ -568,7 +568,7 @@ void RendererOpenGL::DrawSingleScreen(const ScreenInfo& screen_info, float x, fl
     } else {
         glUniform1i(uniform_cursor_enable, 0);
     }
-    glUniform2f(uniform_cursor_pos, 159.0f/320.0f, 119.0f/240.0f);
+    glUniform2f(uniform_cursor_pos, cursor_pos[0]/320.0f, cursor_pos[1]/240.0f);
     state.texture_units[0].texture_2d = screen_info.display_texture;
     state.texture_units[0].sampler = sampler;
     state.Apply();
@@ -700,6 +700,8 @@ void RendererOpenGL::DrawScreens(const Layout::FramebufferLayout& layout, bool f
     }
 
     glUniform1i(uniform_layer, 0);
+    cursor_pos[0] += 1;
+    cursor_pos[1] += 1;
     if (!Settings::values.swap_screen.GetValue()) {
         DrawTopScreen(layout, top_screen);
         glUniform1i(uniform_layer, 0);
diff --git a/src/video_core/renderer_opengl/renderer_opengl.h b/src/video_core/renderer_opengl/renderer_opengl.h
index 68f0c260d..a6c56072b 100644
--- a/src/video_core/renderer_opengl/renderer_opengl.h
+++ b/src/video_core/renderer_opengl/renderer_opengl.h
@@ -114,6 +114,7 @@ private:
     GLuint attrib_position;
     GLuint attrib_tex_coord;
     int currScreenDraw; // 0 is Top, 1 is Bottom
+    std::array<int, 2> cursor_pos = {0,0};
 
     FrameDumperOpenGL frame_dumper;
 };