From 66880afcb473a02d3bc63338eb48edc9eb9d3935 Mon Sep 17 00:00:00 2001
From: Vaxry <vaxry@vaxry.net>
Date: Mon, 11 Nov 2024 15:44:41 +0000
Subject: e

---
 src/managers/PointerManager.cpp | 19 +++++++++++++++++++
 src/render/Texture.cpp          |  4 +++-
 src/render/Texture.hpp          |  1 +
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/managers/PointerManager.cpp b/src/managers/PointerManager.cpp
index d6189acd..e6bebdfd 100644
--- a/src/managers/PointerManager.cpp
+++ b/src/managers/PointerManager.cpp
@@ -445,10 +445,29 @@ SP<Aquamarine::IBuffer> CPointerManager::renderHWCursorBuffer(SP<CPointerManager
                 const auto SURFACE   = currentCursorImage.surface->resource();
                 auto&      shmBuffer = CCursorSurfaceRole::cursorPixelData(SURFACE);
 
+                bool       flipRB = false;
+
+                if (SURFACE->current.texture) {
+                    Debug::log(TRACE, "Cursor CPU surface: format {}, expecting AR24", FormatUtils::drmFormatName(SURFACE->current.texture->m_iDrmFormat));
+                    if (SURFACE->current.texture->m_iDrmFormat == DRM_FORMAT_ABGR8888) {
+                        Debug::log(TRACE, "Cursor CPU surface format AB24, will flip. WARNING: this will break on big endian!");
+                        flipRB = true;
+                    } else if (SURFACE->current.texture->m_iDrmFormat != DRM_FORMAT_ARGB8888) {
+                        Debug::log(TRACE, "Cursor CPU surface format rejected, falling back to sw");
+                        return nullptr;
+                    }
+                }
+
                 if (shmBuffer.data())
                     texData = shmBuffer;
                 else
                     texData = {texture->m_vSize.x * 4 * texture->m_vSize.y, 0};
+
+                if (flipRB) {
+                    for (size_t i = 0; i < shmBuffer.size(); i += 4) {
+                        std::swap(shmBuffer.at(i), shmBuffer.at(i + 2)); // little-endian!!!!!!
+                    }
+                }
             } else {
                 Debug::log(TRACE, "Cannot use dumb copy on dmabuf cursor buffers");
                 return nullptr;
diff --git a/src/render/Texture.cpp b/src/render/Texture.cpp
index 4231dc17..633f0212 100644
--- a/src/render/Texture.cpp
+++ b/src/render/Texture.cpp
@@ -17,7 +17,7 @@ CTexture::~CTexture() {
     destroyTexture();
 }
 
-CTexture::CTexture(uint32_t drmFormat, uint8_t* pixels, uint32_t stride, const Vector2D& size_, bool keepDataCopy) : m_bKeepDataCopy(keepDataCopy) {
+CTexture::CTexture(uint32_t drmFormat, uint8_t* pixels, uint32_t stride, const Vector2D& size_, bool keepDataCopy) : m_iDrmFormat(drmFormat), m_bKeepDataCopy(keepDataCopy) {
     createFromShm(drmFormat, pixels, stride, size_);
 }
 
@@ -44,6 +44,8 @@ CTexture::CTexture(const SP<Aquamarine::IBuffer> buffer, bool keepDataCopy) : m_
 
         auto [pixelData, fmt, bufLen] = buffer->beginDataPtr(0);
 
+        m_iDrmFormat = fmt;
+
         createFromShm(fmt, pixelData, bufLen, shm.size);
         return;
     }
diff --git a/src/render/Texture.hpp b/src/render/Texture.hpp
index 8b98e2a0..f814e06b 100644
--- a/src/render/Texture.hpp
+++ b/src/render/Texture.hpp
@@ -43,6 +43,7 @@ class CTexture {
     void*                       m_pEglImage  = nullptr;
     eTransform                  m_eTransform = HYPRUTILS_TRANSFORM_NORMAL;
     bool                        m_bOpaque    = false;
+    uint32_t                    m_iDrmFormat = DRM_FORMAT_INVALID; // for shm
 
   private:
     void                 createFromShm(uint32_t drmFormat, uint8_t* pixels, uint32_t stride, const Vector2D& size);
-- 
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