Catcrafts/Crafter.Graphics
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dirty rect

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This commit is contained in:
Jorijn van der Graaf 2025-11-26 20:41:54 +01:00
commit 6df6355ba7
2 changed files with 32 additions and 24 deletions
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13
implementations/Crafter.Graphics-Window.cpp
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@ -111,15 +111,10 @@ void Window::AddDirtyRect(ScaleData scale) {
return;
}
for (ClipRect& existingRect : dirtyRects) {
if (rect.left <= existingRect.right && rect.right >= existingRect.left && rect.top <= existingRect.bottom && rect.bottom >= existingRect.top) {
existingRect.left = std::min(existingRect.left, rect.left);
existingRect.right = std::max(existingRect.right, rect.right);
existingRect.top = std::min(existingRect.top, rect.top);
existingRect.bottom = std::max(existingRect.bottom, rect.bottom);
return;
}
}
//merging logic should work so that no pixel is drawn twice, and that no pixel not marked dirty is drawn.
//so lets say there is already an existing horizontal bar and the new rect is a vertical bar making a cross shape, the center of the cross will currently be drawn twice
//so we need to turn it into 3 rects, the top part of the vertical bar, the horizontal bar, and the bottom part of the vertical bar
//in this way no pixel is drawn twice and no area not marked dirty is included
dirtyRects.push_back(rect);
}

33
implementations/Crafter.Graphics-Window_wayland.cpp
View file

@ -212,24 +212,37 @@ void WindowWayland::Render() {
elements.erase(std::remove(elements.begin(), elements.end(), static_cast<Transform*>(nullptr)), elements.end());
std::sort(elements.begin(), elements.end(), [](Transform* a, Transform* b){ return a->z < b->z; });
if (!dirtyRects.empty()) {
for(uint_fast32_t i = 0; i < width*height; i++) {
framebuffer[i] = {0, 0, 0, 255};
}
for (ClipRect rect : dirtyRects) {
//std::cout << std::format("{}, {}, {}, {}", rect.left, rect.top, rect.right, rect.bottom) << std::endl;
for (std::int_fast32_t y = rect.top; y < rect.bottom; y++) {
for (std::int_fast32_t x = rect.left; x < rect.right; x++) {
framebuffer[y * width + x] = {0, 0, 0, 0};
framebuffer[y * width + x].r += 30;
}
}
}
for(Transform* child : elements) {
RenderElement(child);
}
// if (!dirtyRects.empty()) {
// for (ClipRect rect : dirtyRects) {
// for (std::int_fast32_t y = rect.top; y < rect.bottom; y++) {
// for (std::int_fast32_t x = rect.left; x < rect.right; x++) {
// framebuffer[y * width + x] = {0, 0, 0, 0};
// }
// }
// }
for (ClipRect rect : dirtyRects) {
wl_surface_damage(surface, rect.left, rect.top, rect.right-rect.left, rect.bottom-rect.top);
}
dirtyRects.clear();
}
// for(Transform* child : elements) {
// RenderElement(child);
// }
// for (ClipRect rect : dirtyRects) {
// wl_surface_damage(surface, rect.left, rect.top, rect.right-rect.left, rect.bottom-rect.top);
// }
// dirtyRects.clear();
// }
dirtyRects.clear();
wl_surface_damage(surface, 0, 0, width, height);