Attempt xcb image put.

This commit is contained in:
James Grogan 2022-11-12 13:46:10 +00:00
parent c6d03f16d0
commit 5d984aa61d
6 changed files with 78 additions and 6 deletions

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@ -33,7 +33,7 @@ sudo apt-get install libpng-dev
#### Window rendering
```bash
sudo apt-get install libwayland-dev wayland-protocols libx11-dev libxkbcommon-dev libx11-xcb-dev
sudo apt-get install libwayland-dev wayland-protocols libx11-dev libxkbcommon-dev libx11-xcb-dev libxcb-image0-dev
```
We need to generate suitable xdg shell c code for wayland:

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@ -19,7 +19,7 @@ Image<T>::~Image()
template<typename T>
void Image<T>::initialize()
{
mData = std::vector<T>(getBytesPerRow()*mHeight, 0);
mData = std::vector<T>(getBytesPerRow()*mHeight, 10);
}
template<typename T>

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@ -29,12 +29,28 @@ public:
void setBitDepth(unsigned bitDepth);
void setNumChannels(unsigned numChannels);
private:
void initialize();
const T* getDataPtr() const
{
return mData.data();
}
const std::vector<T>& getDataRef() const
{
return mData;
}
std::vector<T> getData() const
{
return mData;
}
private:
unsigned mWidth{1};
unsigned mHeight{1};
unsigned mBitDepth{8};
unsigned mNumChannels{1};
unsigned mNumChannels{4};
std::vector<T> mData;
};

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@ -17,7 +17,7 @@ if(UNIX)
ui_interfaces/x11/XcbKeyboard.cpp
ui_interfaces/x11/GlxInterface.cpp
)
list(APPEND platform_LIBS ${X11_LIBRARIES} ${X11_xcb_LIB} ${X11_X11_xcb_LIB} ${X11_xkbcommon_LIB})
list(APPEND platform_LIBS ${X11_LIBRARIES} ${X11_xcb_LIB} ${X11_X11_xcb_LIB} ${X11_xkbcommon_LIB} libxcb-image.so)
list(APPEND X11_INCLUDE_DIRS ${X11_xkbcommon_INCLUDE_PATH})
else()
message(STATUS "x11 development headers not found - skipping support")

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@ -1,6 +1,47 @@
#pragma once
#include <xcb/xcb_image.h>
#include "Window.h"
#include "XcbWindow.h"
class XcbImage
{
public:
XcbImage(xcb_connection_t* connection, mt::Window* window, xcb_screen_t* screen)
{
mPixmap = xcb_generate_id(connection);
auto hwnd = dynamic_cast<XcbWindow*>(window->GetPlatformWindow())->getHandle();
const auto w = window->GetWidth();
const auto h = window->GetHeight();
xcb_create_pixmap(connection, screen->root_depth, mPixmap, hwnd, w, h);
}
void update(mt::Window* window, xcb_screen_t* screen, xcb_connection_t* connection, xcb_gcontext_t gc)
{
if (!mXImage)
{
auto backing_image = window->getBackingImage();
const auto w = window->GetWidth();
const auto h = window->GetHeight();
//auto data = const_cast<unsigned char*>(backing_image->getDataPtr());
auto data = backing_image->getData();
unsigned char* converted = &data[0];
mXImage = xcb_image_create_native(connection, w, h, XCB_IMAGE_FORMAT_Z_PIXMAP, screen->root_depth, converted, w*h*4, converted);
xcb_image_put(connection, mPixmap, gc, mXImage, 0, 0, 0);
//xcb_image_destroy(mXImage);
}
}
xcb_pixmap_t getPixMap() const
{
return mPixmap;
}
private:
xcb_pixmap_t mPixmap{0};
xcb_image_t* mXImage{nullptr};
};

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@ -5,13 +5,13 @@
#include "XcbScreen.h"
#include "XcbImage.h"
#include "Screen.h"
#include "ImagePrimitives.h"
#include <xcb/xcb.h>
XcbWindow::XcbWindow(mt::Window* window, int hwnd, xcb_connection_t* connection)
: IPlatformWindow(window),
mHandle(hwnd),
mBackingImage(std::make_unique<XcbImage>()),
mConnection(connection)
{
@ -61,10 +61,25 @@ void XcbWindow::show() const
void XcbWindow::paint(mt::Screen* screen)
{
auto xcb_screen = dynamic_cast<XcbScreen*>(screen->GetPlatformScreen());
if (!mBackingImage)
{
mBackingImage = std::make_unique<XcbImage>(mConnection, mWindow, xcb_screen->GetNativeScreen());
}
auto backing_image = mWindow->getBackingImage();
backing_image->initialize();
//ImagePrimitives::drawCheckerboard(const_cast<unsigned char*>(backing_image->getDataPtr()), backing_image->getWidth(), backing_image->getHeight(), 0);
mBackingImage->update(mWindow, xcb_screen->GetNativeScreen(), mConnection, xcb_screen->GetGraphicsContext());
xcb_copy_area(mConnection, mBackingImage->getPixMap(), mHandle, xcb_screen->GetGraphicsContext(), 0, 0 ,0 , 0, backing_image->getWidth(), backing_image->getHeight());
/*
for(const auto& layer : mWindow->GetLayers())
{
XcbLayerInterface::AddLayer(mConnection, xcb_screen->GetNativeScreen(), mHandle, xcb_screen->GetGraphicsContext(), layer);
}
*/
}
void XcbWindow::clear() const