From 0f3fcdd3112b13b7457143de835febd86ff40d76 Mon Sep 17 00:00:00 2001
From: natinusala <natinusala@gmail.com>
Date: Mon, 28 Jan 2019 19:31:27 +0100
Subject: [PATCH] Implement scissoring for d2d12

---
 menu/drivers_display/menu_display_d3d12.c | 38 +++++++++++++++++++++--
 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/menu/drivers_display/menu_display_d3d12.c b/menu/drivers_display/menu_display_d3d12.c
index 1703cac367..a579c16245 100644
--- a/menu/drivers_display/menu_display_d3d12.c
+++ b/menu/drivers_display/menu_display_d3d12.c
@@ -295,6 +295,40 @@ static bool menu_display_d3d12_font_init_first(
    return true;
 }
 
+void menu_display_d3d12_scissor_begin(video_frame_info_t *video_info, int x, int y, unsigned width, unsigned height)
+{
+   D3D12_RECT rect = {0};
+   d3d12_video_t *d3d12 = video_info ?
+      (d3d12_video_t*)video_info->userdata : NULL;
+
+   rect.left = x;
+   rect.top = y;
+   rect.right = width + x;
+   rect.bottom = height + y;
+
+   if (!d3d12 || !width || !height)
+      return;
+
+   D3D12RSSetScissorRects(d3d12->queue.cmd, 1, &rect);
+}
+
+void menu_display_d3d12_scissor_end(video_frame_info_t *video_info)
+{
+   D3D12_RECT rect = {0};
+   d3d12_video_t *d3d12 = video_info ?
+      (d3d12_video_t*)video_info->userdata : NULL;
+
+   if (!d3d12)
+      return;
+
+   rect.left = d3d12->vp.x;
+   rect.top = d3d12->vp.y;
+   rect.right = d3d12->vp.width;
+   rect.bottom = d3d12->vp.height;
+
+   D3D12RSSetScissorRects(d3d12->queue.cmd, 1, &rect);
+}
+
 menu_display_ctx_driver_t menu_display_ctx_d3d12 = {
    menu_display_d3d12_draw,
    menu_display_d3d12_draw_pipeline,
@@ -310,6 +344,6 @@ menu_display_ctx_driver_t menu_display_ctx_d3d12 = {
    MENU_VIDEO_DRIVER_DIRECT3D12,
    "d3d12",
    true,
-   NULL,
-   NULL
+   menu_display_d3d12_scissor_begin,
+   menu_display_d3d12_scissor_end
 };