pointer: add drm dumb buffers for cursors (#8399)

---------

Co-authored-by: Mihai Fufezan <mihai@fufexan.net>

1 files changed, 19 insertions, 2 deletions

diff --git a/src/render/Texture.cpp b/src/render/Texture.cpp
index 91e70afa..633f0212 100644
--- a/src/render/Texture.cpp
+++ b/src/render/Texture.cpp
@@ -3,6 +3,7 @@
 #include "../Compositor.hpp"
 #include "../protocols/types/Buffer.hpp"
 #include "../helpers/Format.hpp"
+#include <cstring>
 
 CTexture::CTexture() {
     // naffin'
@@ -16,7 +17,7 @@ CTexture::~CTexture() {
     destroyTexture();
 }
 
-CTexture::CTexture(uint32_t drmFormat, uint8_t* pixels, uint32_t stride, const Vector2D& size_) {
+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_);
 }
 
@@ -24,7 +25,7 @@ CTexture::CTexture(const Aquamarine::SDMABUFAttrs& attrs, void* image) {
     createFromDma(attrs, image);
 }
 
-CTexture::CTexture(const SP<Aquamarine::IBuffer> buffer) {
+CTexture::CTexture(const SP<Aquamarine::IBuffer> buffer, bool keepDataCopy) : m_bKeepDataCopy(keepDataCopy) {
     if (!buffer)
         return;
 
@@ -43,6 +44,8 @@ CTexture::CTexture(const SP<Aquamarine::IBuffer> buffer) {
 
         auto [pixelData, fmt, bufLen] = buffer->beginDataPtr(0);
 
+        m_iDrmFormat = fmt;
+
         createFromShm(fmt, pixelData, bufLen, shm.size);
         return;
     }
@@ -80,6 +83,11 @@ void CTexture::createFromShm(uint32_t drmFormat, uint8_t* pixels, uint32_t strid
     GLCALL(glTexImage2D(GL_TEXTURE_2D, 0, format->glInternalFormat ? format->glInternalFormat : format->glFormat, size_.x, size_.y, 0, format->glFormat, format->glType, pixels));
     GLCALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0));
     GLCALL(glBindTexture(GL_TEXTURE_2D, 0));
+
+    if (m_bKeepDataCopy) {
+        m_vDataCopy.resize(stride * size_.y);
+        memcpy(m_vDataCopy.data(), pixels, stride * size_.y);
+    }
 }
 
 void CTexture::createFromDma(const Aquamarine::SDMABUFAttrs& attrs, void* image) {
@@ -135,6 +143,11 @@ void CTexture::update(uint32_t drmFormat, uint8_t* pixels, uint32_t stride, cons
     GLCALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0));
 
     glBindTexture(GL_TEXTURE_2D, 0);
+
+    if (m_bKeepDataCopy) {
+        m_vDataCopy.resize(stride * m_vSize.y);
+        memcpy(m_vDataCopy.data(), pixels, stride * m_vSize.y);
+    }
 }
 
 void CTexture::destroyTexture() {
@@ -152,3 +165,7 @@ void CTexture::allocate() {
     if (!m_iTexID)
         GLCALL(glGenTextures(1, &m_iTexID));
 }
+
+const std::vector<uint8_t>& CTexture::dataCopy() {
+    return m_vDataCopy;
+}