From f83e60243e6efd930f6c5e18019e6f98cfa9e278 Mon Sep 17 00:00:00 2001
From: KojoZero <kwaku.kiriguya@gmail.com>
Date: Fri, 24 Apr 2026 13:27:49 -0700
Subject: [PATCH] added cursor to vulkan

---
 .../host_shaders/vulkan_present.frag          | 42 ++++++++++++++++++-
 .../host_shaders/vulkan_present.vert          |  4 +-
 .../renderer_vulkan/renderer_vulkan.cpp       |  3 +-
 3 files changed, 45 insertions(+), 4 deletions(-)

diff --git a/src/video_core/host_shaders/vulkan_present.frag b/src/video_core/host_shaders/vulkan_present.frag
index 01b158732..54d61ea8d 100644
--- a/src/video_core/host_shaders/vulkan_present.frag
+++ b/src/video_core/host_shaders/vulkan_present.frag
@@ -7,7 +7,7 @@
 
 layout (location = 0) in vec2 frag_tex_coord;
 layout (location = 0) out vec4 color;
-
+layout (location = 1) in vec2 pixelUnit;
 layout (push_constant, std140) uniform DrawInfo {
     mat4 modelview_matrix;
     vec4 i_resolution;
@@ -22,6 +22,7 @@ layout (push_constant, std140) uniform DrawInfo {
 
 layout (set = 0, binding = 0) uniform sampler2D screen_textures[3];
 
+
 vec4 GetScreen(int screen_id) {
 #ifdef ARRAY_DYNAMIC_INDEX
     return texture(screen_textures[screen_id], frag_tex_coord);
@@ -38,5 +39,42 @@ vec4 GetScreen(int screen_id) {
 }
 
 void main() {
-    color = GetScreen(screen_id_l);
+    vec4 pixel = GetScreen(screen_id_l);
+    vec2 rfrag_tex_coord = vec2(frag_tex_coord.y, 1.0 - frag_tex_coord.x);
+    //Cursor
+    if (cursor_enable == 1){
+        //Black Outline
+        if (rfrag_tex_coord.x <= (cursor_pos.x + (2.0*pixelUnit.x)) &&
+            rfrag_tex_coord.x >= (cursor_pos.x - (1.0*pixelUnit.x))) {
+            if (rfrag_tex_coord.y <= (cursor_pos.y + (5.0*pixelUnit.y)) &&
+                rfrag_tex_coord.y >= (cursor_pos.y - (4.0*pixelUnit.y))) {
+                pixel = vec4(0.0, 0.0, 0.0, 1.0);
+            }
+        }
+
+        if (rfrag_tex_coord.y <= (cursor_pos.y + (2.0*pixelUnit.y)) &&
+            rfrag_tex_coord.y >= (cursor_pos.y - (1.0*pixelUnit.y))) {
+            if (rfrag_tex_coord.x <= (cursor_pos.x + (5.0*pixelUnit.x)) &&
+                rfrag_tex_coord.x >= (cursor_pos.x - (4.0*pixelUnit.x))) {
+                pixel = vec4(0.0, 0.0, 0.0, 1.0);
+            }
+        }
+        //White Cross
+        if (rfrag_tex_coord.x <= (cursor_pos.x + (1.0*pixelUnit.x)) &&
+            rfrag_tex_coord.x >= (cursor_pos.x - (0.0*pixelUnit.x))) {
+            if (rfrag_tex_coord.y <= (cursor_pos.y + (4.0*pixelUnit.y)) &&
+                rfrag_tex_coord.y >= (cursor_pos.y - (3.0*pixelUnit.y))) {
+                pixel = vec4(1.0, 1.0, 1.0, 1.0);
+            }
+        }
+
+        if (rfrag_tex_coord.y <= (cursor_pos.y + (1.0*pixelUnit.y)) &&
+            rfrag_tex_coord.y >= (cursor_pos.y - (0.0*pixelUnit.y))) {
+            if (rfrag_tex_coord.x <= (cursor_pos.x + (4.0*pixelUnit.x)) &&
+                rfrag_tex_coord.x >= (cursor_pos.x - (3.0*pixelUnit.x))) {
+                pixel = vec4(1.0, 1.0, 1.0, 1.0);
+            }
+        }
+    }
+    color = vec4(pixel.rgb, 1.0);
 }
diff --git a/src/video_core/host_shaders/vulkan_present.vert b/src/video_core/host_shaders/vulkan_present.vert
index 2844fdafc..96ede7ec1 100644
--- a/src/video_core/host_shaders/vulkan_present.vert
+++ b/src/video_core/host_shaders/vulkan_present.vert
@@ -8,7 +8,7 @@
 layout (location = 0) in vec2 vert_position;
 layout (location = 1) in vec2 vert_tex_coord;
 layout (location = 0) out vec2 frag_tex_coord;
-
+layout (location = 1) out vec2 pixelUnit;
 layout (push_constant, std140) uniform DrawInfo {
     mat4 modelview_matrix;
     vec4 i_resolution;
@@ -24,4 +24,6 @@ void main() {
     vec4 position = vec4(vert_position, 0.0, 1.0) * modelview_matrix;
     gl_Position = vec4(position.x, position.y, 0.0, 1.0);
     frag_tex_coord = vert_tex_coord;
+    pixelUnit.x = 1/320.0;
+    pixelUnit.y = 1/240.0;
 }
diff --git a/src/video_core/renderer_vulkan/renderer_vulkan.cpp b/src/video_core/renderer_vulkan/renderer_vulkan.cpp
index 7a00ed342..4233eed5e 100644
--- a/src/video_core/renderer_vulkan/renderer_vulkan.cpp
+++ b/src/video_core/renderer_vulkan/renderer_vulkan.cpp
@@ -1020,7 +1020,8 @@ void RendererVulkan::DrawScreens(Frame* frame, const Layout::FramebufferLayout&
     if (settings.shader_update_requested.exchange(false)) {
         ReloadPipeline(layout.render_3d_mode);
     }
-
+    cursor_pos[0] += 1;
+    cursor_pos[1] += 1;
     PrepareDraw(frame, layout);
 
     const auto& top_screen = layout.top_screen;