#openttdcoop

diff --git a/src/dropdown.cpp b/src/dropdown.cpp
index 8298f2d..c23a66c 100644
--- a/src/dropdown.cpp
+++ b/src/dropdown.cpp
@@ -108,7 +108,7 @@ void DropdownMenuWindow::DrawWidget(WidgetNumber wid_num, const BaseWidget *wid)
 	for (auto const &item : this->items) {
 		if (it == this->selected_index) {
 			Rectangle32 r = {this->rect.base.x, y, static_cast<uint>(wid->pos.width - 1), static_cast<uint>(GetTextHeight())};
-			_video.FillSurface(_palette[GetColourRangeBase(COL_RANGE_GREY) + 7], r);
+			_video.FillSurface(r, _palette[GetColourRangeBase(COL_RANGE_GREY) + 7]);
 		}
 		_video.BlitText(item.str, MakeRGBA(255, 255, 255, OPAQUE), this->rect.base.x, y, wid->pos.width);
 
diff --git a/src/fence_gui.cpp b/src/fence_gui.cpp
index 7532717..fbc9718 100644
--- a/src/fence_gui.cpp
+++ b/src/fence_gui.cpp
@@ -115,7 +115,7 @@ void FenceGui::DrawWidget(WidgetNumber wid_num, const BaseWidget *wid) const
 				lines--;
 
 				Recolouring recolouring;
-				_video.BlitImage(rect.x, rect.y - sprite->yoffset, sprite, recolouring, GS_NORMAL);
+				_video.BlitImage({rect.x, rect.y - sprite->yoffset}, sprite, recolouring);
 				rect.y += sprite->height;
 			}
 			break;
diff --git a/src/gui_graphics.cpp b/src/gui_graphics.cpp
index c0528dc..a583266 100644
--- a/src/gui_graphics.cpp
+++ b/src/gui_graphics.cpp
@@ -30,12 +30,12 @@ void DrawBorderSprites(const BorderSpriteData &bsd, bool pressed, const Rectangl
 	rc.Set(0, RecolourEntry(COL_RANGE_BROWN, colour));
 
 	Point32 pt = rect.base;
-	_video.BlitImage(pt, spr_base[WBS_TOP_LEFT], rc, GS_NORMAL);
+	_video.BlitImage(pt, spr_base[WBS_TOP_LEFT], rc);
 	int xleft = pt.x + spr_base[WBS_TOP_LEFT]->xoffset + spr_base[WBS_TOP_LEFT]->width;
 	int ytop = pt.y + spr_base[WBS_TOP_LEFT]->yoffset + spr_base[WBS_TOP_LEFT]->height;
 
 	pt.x = rect.base.x + rect.width - 1;
-	_video.BlitImage(pt, spr_base[WBS_TOP_RIGHT], rc, GS_NORMAL);
+	_video.BlitImage(pt, spr_base[WBS_TOP_RIGHT], rc);
 	int xright = pt.x + spr_base[WBS_TOP_RIGHT]->xoffset;
 
 	uint16 numx = (xright - xleft) / spr_base[WBS_TOP_MIDDLE]->width;
@@ -43,7 +43,7 @@ void DrawBorderSprites(const BorderSpriteData &bsd, bool pressed, const Rectangl
 
 	pt.x = rect.base.x;
 	pt.y = rect.base.y + rect.height - 1;
-	_video.BlitImage(pt, spr_base[WBS_BOTTOM_LEFT], rc, GS_NORMAL);
+	_video.BlitImage(pt, spr_base[WBS_BOTTOM_LEFT], rc);
 	int ybot = pt.y + spr_base[WBS_BOTTOM_LEFT]->yoffset;
 
 	uint16 numy = (ybot - ytop) / spr_base[WBS_MIDDLE_LEFT]->height;
@@ -51,14 +51,15 @@ void DrawBorderSprites(const BorderSpriteData &bsd, bool pressed, const Rectangl
 
 	pt.x = rect.base.x + rect.width - 1;
 	pt.y = rect.base.y + rect.height - 1;
-	_video.BlitImage(pt, spr_base[WBS_BOTTOM_RIGHT], rc, GS_NORMAL);
+	_video.BlitImage(pt, spr_base[WBS_BOTTOM_RIGHT], rc);
 
 	_video.BlitHorizontal(xleft, numx, pt.y, spr_base[WBS_BOTTOM_MIDDLE], rc);
 
 	pt.x = rect.base.x + rect.width - 1;
 	_video.BlitVertical(ytop, numy, pt.x, spr_base[WBS_MIDDLE_RIGHT], rc);
 
-	_video.BlitImages(xleft, ytop, spr_base[WBS_MIDDLE_MIDDLE], numx, numy, rc);
+	Rectangle32 inner_rect(xleft, ytop, numx, numy);
+	_video.FillSurface(inner_rect, rc.GetPalette(GS_NORMAL)[7]);
 }
 
 /**
@@ -75,21 +76,14 @@ void OverlayShaded(const Rectangle32 &rect)
 	r.RestrictTo(0, 0, _video.GetXSize(), _video.GetYSize());
 	if (r.width == 0 || r.height == 0) return;
 
-	/* Set clipped area to the rectangle. */
-	ClippedRectangle cr(_video.GetClippedRectangle());
-	ClippedRectangle new_cr(cr, r.base.x, r.base.y, r.width, r.height);
-	_video.SetClippedRectangle(new_cr);
-
 	/* Align the disabled sprite so it becomes a continuous pattern. */
-	int32 base_x = -(r.base.x % img->width);
-	int32 base_y = -(r.base.y % img->height);
+	int32 base_x = r.base.x - (r.base.x % img->width);
+	int32 base_y = r.base.y - (r.base.y % img->height);
 	uint16 numx = (r.width + img->width - 1) / img->width;
 	uint16 numy = (r.height + img->height - 1) / img->height;
 
 	static const Recolouring recolour; // Fixed recolouring mapping.
-	_video.BlitImages(base_x, base_y, img, numx, numy, recolour);
-
-	_video.SetClippedRectangle(cr); // Restore clipped area.
+	_video.BlitImages({base_x, base_y}, img, numx, numy, recolour);
 }
 
 /**
@@ -109,10 +103,11 @@ void DrawString(StringID strid, uint8 colour, int x, int y, int width, Alignment
 	DrawText(strid, buffer, lengthof(buffer));
 	/** \todo Reduce the naiviness of this. */
 	if (outline) {
-		_video.BlitText(buffer, MakeRGBA(0, 0, 0, OPAQUE), x + 1, y, width, align);
-		_video.BlitText(buffer, MakeRGBA(0, 0, 0, OPAQUE), x, y + 1, width, align);
-		_video.BlitText(buffer, MakeRGBA(0, 0, 0, OPAQUE), x - 1, y, width, align);
-		_video.BlitText(buffer, MakeRGBA(0, 0, 0, OPAQUE), x, y - 1, width, align);
+//		_video.BlitText(buffer, MakeRGBA(0, 0, 0, OPAQUE), x + 1, y, width, align);
+//		_video.BlitText(buffer, MakeRGBA(0, 0, 0, OPAQUE), x, y + 1, width, align);
+//		_video.BlitText(buffer, MakeRGBA(0, 0, 0, OPAQUE), x - 1, y, width, align);
+//		_video.BlitText(buffer, MakeRGBA(0, 0, 0, OPAQUE), x, y - 1, width, align);
+		_video.BlitText(buffer, MakeRGBA(0, 0, 0, OPAQUE), x + 1, y + 1, width, align);
 	}
 	_video.BlitText(buffer, _palette[colour], x, y, width, align);
 }
diff --git a/src/palette.h b/src/palette.h
index 1e98317..fdc5122 100644
--- a/src/palette.h
+++ b/src/palette.h
@@ -86,6 +86,8 @@ static inline uint32 SetA(uint32 rgba, uint8 opacity)
 	return rgba | opacity;
 }
 
+#define SPLIT_RGBA(rgba) GetR(rgba), GetG(rgba), GetB(rgba), GetA(rgba)
+
 /** Names of colour ranges. */
 enum ColourRange {
 	COL_RANGE_GREY,
diff --git a/src/path_gui.cpp b/src/path_gui.cpp
index cd808b0..d5beca9 100644
--- a/src/path_gui.cpp
+++ b/src/path_gui.cpp
@@ -225,7 +225,8 @@ void PathBuildGui::DrawWidget(WidgetNumber wid_num, const BaseWidget *wid) const
 				if (img != nullptr) {
 					int dx = (wid->pos.width - path_type_button_size.width) / 2;
 					int dy = (wid->pos.height - path_type_button_size.height) / 2;
-					_video.BlitImage(GetWidgetScreenX(wid) + dx - path_type_button_size.base.x, GetWidgetScreenY(wid) + dy - path_type_button_size.base.y, img, recolour, GS_NORMAL);
+					Point32 pt(GetWidgetScreenX(wid) + dx - path_type_button_size.base.x, GetWidgetScreenY(wid) + dy - path_type_button_size.base.y);
+					_video.BlitImage(pt, img, recolour);
 				}
 			}
 			break;
@@ -239,7 +240,8 @@ void PathBuildGui::DrawWidget(WidgetNumber wid_num, const BaseWidget *wid) const
 				if (img != nullptr) {
 					int dx = (wid->pos.width - path_type_button_size.width) / 2;
 					int dy = (wid->pos.height - path_type_button_size.height) / 2;
-					_video.BlitImage(GetWidgetScreenX(wid) + dx - path_type_button_size.base.x, GetWidgetScreenY(wid) + dy - path_type_button_size.base.y, img, recolour, GS_NORMAL);
+					Point32 pt(GetWidgetScreenX(wid) + dx - path_type_button_size.base.x, GetWidgetScreenY(wid) + dy - path_type_button_size.base.y);
+					_video.BlitImage(pt, img, recolour);
 				}
 			}
 			break;
diff --git a/src/ride_gui.cpp b/src/ride_gui.cpp
index cfa2795..0ea21b1 100644
--- a/src/ride_gui.cpp
+++ b/src/ride_gui.cpp
@@ -221,9 +221,8 @@ void RideSelectGui::DrawWidget(WidgetNumber wid_num, const BaseWidget *wid) cons
 				/* Display the selected shop in the ride select window. */
 				if (ride_type != nullptr && ride_type->kind == RTK_SHOP) {
 					static const Recolouring recolour; // Never modified, display 'original' image in the GUI.
-					_video.BlitImage(this->GetWidgetScreenX(wid) + wid->pos.width / 2,
-							this->GetWidgetScreenY(wid) + 40, ride_type->GetView(_shop_placer.orientation),
-							recolour, GS_NORMAL);
+					Point32 pt(this->GetWidgetScreenX(wid) + wid->pos.width / 2, this->GetWidgetScreenY(wid) + 40);
+					_video.BlitImage(pt, ride_type->GetView(_shop_placer.orientation), recolour);
 				}
 			}
 			break;
diff --git a/src/sprite_data.cpp b/src/sprite_data.cpp
index 28b3ce0..5fd4389 100644
--- a/src/sprite_data.cpp
+++ b/src/sprite_data.cpp
@@ -27,6 +27,7 @@ ImageData::ImageData()
 	this->height = 0;
 	this->table = nullptr;
 	this->data = nullptr;
+	this->image = nullptr;
 }
 
 ImageData::~ImageData()
diff --git a/src/sprite_data.h b/src/sprite_data.h
index 049990c..5987aa2 100644
--- a/src/sprite_data.h
+++ b/src/sprite_data.h
@@ -12,6 +12,8 @@
 #ifndef SPRITE_DATA_H
 #define SPRITE_DATA_H
 
+#include <SDL.h>
+
 static const uint32 INVALID_JUMP = UINT32_MAX; ///< Invalid jump destination in image data.
 
 class RcdFileReader;
@@ -42,6 +44,8 @@ public:
 	int16 yoffset; ///< Vertical offset of the image.
 	uint32 *table; ///< The jump table. For missing entries, #INVALID_JUMP is used.
 	uint8 *data;   ///< The image data itself.
+
+	mutable SDL_Texture *image;
 };
 
 ImageData *LoadImage(RcdFileReader *rcd_file);
diff --git a/src/terraform_gui.cpp b/src/terraform_gui.cpp
index dbf13a5..5cd5eaf 100644
--- a/src/terraform_gui.cpp
+++ b/src/terraform_gui.cpp
@@ -103,7 +103,7 @@ void TerraformGui::DrawWidget(WidgetNumber wid_num, const BaseWidget *wid) const
 
 		base.x = this->GetWidgetScreenX(wid) + (wid->pos.width - dot->width) / 2;
 		base.y = this->GetWidgetScreenY(wid) + (wid->pos.height - dot->height) / 2;
-		_video.BlitImage(base, dot, recolour, GS_NORMAL);
+		_video.BlitImage(base, dot, recolour);
 		return;
 	}
 
diff --git a/src/toolbar_gui.cpp b/src/toolbar_gui.cpp
index 590e9f8..51f49ae 100644
--- a/src/toolbar_gui.cpp
+++ b/src/toolbar_gui.cpp
@@ -368,14 +368,14 @@ void BottomToolbarWindow::DrawWidget(WidgetNumber wid_num, const BaseWidget *wid
 			Viewport *vp = GetViewport();
 			int dir = (vp == nullptr) ? 0 : vp->orientation;
 			const ImageData *img = _sprite_manager.GetTableSprite(SPR_GUI_COMPASS_START + dir);
-			if (img != nullptr) _video.BlitImage(GetWidgetScreenX(wid), GetWidgetScreenY(wid), img, recolour, GS_NORMAL);
+			if (img != nullptr) _video.BlitImage({GetWidgetScreenX(wid), GetWidgetScreenY(wid)}, img, recolour);
 			break;
 		}
 
 		case BTB_WEATHER: {
 			int spr = SPR_GUI_WEATHER_START + _weather.GetWeatherType();
 			const ImageData *img = _sprite_manager.GetTableSprite(spr);
-			if (img != nullptr) _video.BlitImage(GetWidgetScreenX(wid), GetWidgetScreenY(wid), img, recolour, GS_NORMAL);
+			if (img != nullptr) _video.BlitImage({GetWidgetScreenX(wid), GetWidgetScreenY(wid)}, img, recolour);
 			break;
 		}
 	}
diff --git a/src/video.cpp b/src/video.cpp
index 748e120..204ef44 100644
--- a/src/video.cpp
+++ b/src/video.cpp
@@ -31,100 +31,6 @@ void QuitProgram()
 	_finish = true;
 }
 
-/** Default constructor of a clipped rectangle. */
-ClippedRectangle::ClippedRectangle()
-{
-	this->absx = 0;
-	this->absy = 0;
-	this->width = 0;
-	this->height = 0;
-	this->address = nullptr; this->pitch = 0;
-}
-
-/**
- * Construct a clipped rectangle from coordinates.
- * @param x Top-left x position.
- * @param y Top-left y position.
- * @param w Width.
- * @param h Height.
- */
-ClippedRectangle::ClippedRectangle(uint16 x, uint16 y, uint16 w, uint16 h)
-{
-	this->absx = x;
-	this->absy = y;
-	this->width = w;
-	this->height = h;
-	this->address = nullptr; this->pitch = 0;
-}
-
-/**
- * Construct a clipped rectangle inside an existing one.
- * @param cr Existing rectangle.
- * @param x Top-left x position.
- * @param y Top-left y position.
- * @param w Width.
- * @param h Height.
- * @note %Rectangle is clipped to the old one.
- */
-ClippedRectangle::ClippedRectangle(const ClippedRectangle &cr, uint16 x, uint16 y, uint16 w, uint16 h)
-{
-	if (x >= cr.width || y >= cr.height) {
-		this->absx = 0;
-		this->absy = 0;
-		this->width = 0;
-		this->height = 0;
-		this->address = nullptr; this->pitch = 0;
-		return;
-	}
-	if (x + w > cr.width)  w = cr.width - x;
-	if (y + h > cr.height) h = cr.height - y;
-
-	this->absx = cr.absx + x;
-	this->absy = cr.absy + y;
-	this->width = w;
-	this->height = h;
-	this->address = nullptr; this->pitch = 0;
-}
-
-/**
- * Copy constructor.
- * @param cr Existing clipped rectangle.
- */
-ClippedRectangle::ClippedRectangle(const ClippedRectangle &cr)
-{
-	this->absx = cr.absx;
-	this->absy = cr.absy;
-	this->width = cr.width;
-	this->height = cr.height;
-	this->address = cr.address; this->pitch = cr.pitch;
-}
-
-/**
- * Assignment operator override.
- * @param cr Existing clipped rectangle.
- * @return The assigned value.
- */
-ClippedRectangle &ClippedRectangle::operator=(const ClippedRectangle &cr)
-{
-	if (this != &cr) {
-		this->absx = cr.absx;
-		this->absy = cr.absy;
-		this->width = cr.width;
-		this->height = cr.height;
-		this->address = cr.address; this->pitch = cr.pitch;
-	}
-	return *this;
-}
-
-/** Initialize the #address if not done already. */
-void ClippedRectangle::ValidateAddress()
-{
-	if (this->address == nullptr) {
-		this->pitch = _video.GetXSize();
-		this->address = _video.mem + this->absx + this->absy * this->pitch;
-	}
-}
-
 /**
  * Default constructor, does nothing, never goes wrong.
  * Call #Initialize to initialize the system.
@@ -165,9 +71,18 @@ std::string VideoSystem::Initialize(const char *font_name, int font_size)
 		return err;
 	}
 
+	this->renderer = SDL_CreateRenderer(this->window, -1, 0);
+	if (this->renderer == nullptr) {
+		std::string err = "Could not create renderer: ";
+		err += SDL_GetError();
+		SDL_Quit();
+		return err;
+	}
+	SDL_SetRenderDrawBlendMode(this->renderer, SDL_BLENDMODE_BLEND);
+
 	this->GetResolutions();
 
-	this->SetResolution({800, 600}); // Allocates this->mem, return value is ignored.
+	this->SetResolution({800, 600}); // return value is ignored.
 
 	/* SDL_CreateRGBSurfaceFrom() pretends to use a void* for the data,
 	 * but it's really treated as endian-specific uint32*.
@@ -183,12 +98,11 @@ std::string VideoSystem::Initialize(const char *font_name, int font_size)
 		SDL_SetWindowIcon(this->window, icon);
 		SDL_FreeSurface(icon);
 	} else {
-		printf("Could not set window icon (%s)\n", SDL_GetError());
+		fprintf(stderr, "Could not set window icon (%s)\n", SDL_GetError());
 	}
 
 	if (TTF_Init() != 0) {
 		SDL_Quit();
-		delete[] this->mem;
 		std::string err = "TTF font initialization failed: ";
 		err += TTF_GetError();
 		return err;
@@ -204,7 +118,6 @@ std::string VideoSystem::Initialize(const char *font_name, int font_size)
 		err += TTF_GetError();
 		TTF_Quit();
 		SDL_Quit();
-		delete[] this->mem;
 		return err;
 	}
 
@@ -230,43 +143,12 @@ bool VideoSystem::SetResolution(const Point32 &res)
 {
 	if (this->initialized && this->GetXSize() == res.x && this->GetYSize() == res.y) return true;
 
-	/* Destroy old window, if it exists. */
-	if (this->initialized) {
-		delete[] mem;
-		this->mem = nullptr;
-		SDL_DestroyTexture(this->texture);
-		this->texture = nullptr;
-		SDL_DestroyRenderer(this->renderer);
-		this->renderer = nullptr;
-	}
-
 	this->vid_width = res.x;
 	this->vid_height = res.y;
 	SDL_SetWindowSize(this->window, this->vid_width, this->vid_height);
 
-	this->renderer = SDL_CreateRenderer(this->window, -1, 0);
-	if (this->renderer == nullptr) {
-		SDL_Quit();
-		fprintf(stderr, "Could not create renderer (%s)\n", SDL_GetError());
-		return false;
-	}
-
-	this->texture = SDL_CreateTexture(this->renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_STREAMING, this->vid_width, this->vid_height);
-	if (this->texture == nullptr) {
-		SDL_Quit();
-		fprintf(stderr, "Could not create texture (%s)\n", SDL_GetError());
-		return false;
-	}
-
-	this->mem = new uint32[this->vid_width * this->vid_height];
-	if (this->mem == nullptr) {
-		SDL_Quit();
-		fprintf(stderr, "Failed to obtain window display storage.\n");
-		return false;
-	}
-
 	/* Update internal screen size data structures. */
-	this->blit_rect = ClippedRectangle(0, 0, this->vid_width, this->vid_height);
+	this->blit_rect = Rectangle32(0, 0, this->vid_width, this->vid_height);
 	Viewport *vp = GetViewport();
 	if (vp != nullptr) vp->SetSize(this->vid_width, this->vid_height);
 	_manager.RepositionAllWindows();
@@ -314,18 +196,17 @@ void VideoSystem::MarkDisplayClean()
  * Set the clipped area.
  * @param cr New clipped blitting area.
  */
-void VideoSystem::SetClippedRectangle(const ClippedRectangle &cr)
+void VideoSystem::SetClippedRectangle(const Rectangle32 &rect)
 {
-	this->blit_rect = cr;
+	this->blit_rect = rect;
 }
 
 /**
  * Get the current clipped blitting area.
  * @return Current clipped area.
  */
-ClippedRectangle VideoSystem::GetClippedRectangle()
+Rectangle32 VideoSystem::GetClippedRectangle()
 {
-	this->blit_rect.ValidateAddress();
 	return this->blit_rect;
 }
 
@@ -439,6 +320,9 @@ void VideoSystem::MainLoop()
 		if (_finish) break;
 
 		uint32 now = SDL_GetTicks();
+
+		printf("%dms\n", now - start);
+
 		if (now >= start) { // No wrap around.
 			now -= start;
 			if (now < FRAME_DELAY) SDL_Delay(FRAME_DELAY - now); // Too early, wait until next frame.
@@ -458,7 +342,6 @@ void VideoSystem::Shutdown()
 		TTF_CloseFont(this->font);
 		TTF_Quit();
 		SDL_Quit();
-		delete[] this->mem;
 		this->initialized = false;
 		this->dirty = false;
 	}
@@ -470,11 +353,12 @@ void VideoSystem::Shutdown()
  */
 void VideoSystem::FinishRepaint()
 {
-	SDL_UpdateTexture(this->texture, nullptr, this->mem, this->GetXSize() * sizeof(uint32)); // Upload memory to the GPU.
-	SDL_RenderClear(this->renderer);
-	SDL_RenderCopy(this->renderer, this->texture, nullptr, nullptr);
 	SDL_RenderPresent(this->renderer);
 
+	/* Reset the renderer */
+	SDL_SetRenderDrawColor(this->renderer, 0, 0, 0, 0);
+	SDL_RenderClear(this->renderer);
+
 	MarkDisplayClean();
 }
 
@@ -483,333 +367,96 @@ void VideoSystem::FinishRepaint()
  * @param colour Colour to fill with.
  * @param rect %Rectangle to fill.
  */
-void VideoSystem::FillSurface(uint32 colour, const Rectangle32 &rect)
-{
-	ClippedRectangle cr = this->GetClippedRectangle();
-
-	int x = Clamp((int)rect.base.x, 0, (int)cr.width);
-	int w = Clamp((int)(rect.base.x + rect.width), 0, (int)cr.width);
-	int y = Clamp((int)rect.base.y, 0, (int)cr.height);
-	int h = Clamp((int)(rect.base.y + rect.height), 0, (int)cr.height);
-
-	w -= x;
-	h -= y;
-	if (w == 0 || h == 0) return;
-
-	uint32 *pixels_base = cr.address + x + y * cr.pitch;
-	while (h > 0) {
-		uint32 *pixels = pixels_base;
-		for (int i = 0; i < w; i++) *pixels++ = colour;
-		pixels_base += cr.pitch;
-		h--;
-	}
-}
-
-/**
- * Blit pixels from the \a spr relative to #blit_rect into the area.
- * @param img_base Coordinate of the sprite data.
- * @param spr The sprite to blit.
- * @param recolour Sprite recolouring definition.
- * @param shift Gradient shift.
- */
-void VideoSystem::BlitImage(const Point32 &img_base, const ImageData *spr, const Recolouring &recolour, GradientShift shift)
+void VideoSystem::FillSurface(const Rectangle32 &rect, uint32 colour)
 {
-	this->BlitImage(img_base.x, img_base.y, spr, recolour, shift);
-}
-
-static const int STEP_SIZE = 18; ///< Amount of colour shift for each gradient step.
-typedef uint8 (*ShiftFunc)(uint8); ///< Type of the gradient shift function.
-
-/**
- * Gradient shift function for #GS_NIGHT.
- * @param col Input colour.
- * @return Shifted result colour.
- */
-static uint8 ShiftGradientNight(uint8 col)
-{
-	return (col <= 4 * STEP_SIZE) ? 0 : col - 4 * STEP_SIZE;
-}
-
-/**
- * Gradient shift function for #GS_VERY_DARK.
- * @param col Input colour.
- * @return Shifted result colour.
- */
-static uint8 ShiftGradientVeryDark(uint8 col)
-{
-	return (col <= 3 * STEP_SIZE) ? 0 : col - 3 * STEP_SIZE;
-}
-
-/**
- * Gradient shift function for #GS_DARK
- * @param col Input colour.
- * @return Shifted result colour.
- */
-static uint8 ShiftGradientDark(uint8 col)
-{
-	return (col <= 2 * STEP_SIZE) ? 0 : col - 2 * STEP_SIZE;
-}
-
-/**
- * Gradient shift function for #GS_SLIGHTLY_DARK.
- * @param col Input colour.
- * @return Shifted result colour.
- */
-static uint8 ShiftGradientSlightlyDark(uint8 col)
-{
-	return (col <= STEP_SIZE) ? 0 : col - STEP_SIZE;
-}
-
-/**
- * Gradient shift function for #GS_NORMAL.
- * @param col Input colour.
- * @return Shifted result colour.
- */
-static uint8 ShiftGradientNormal(uint8 col)
-{
-	return col;
-}
-
-/**
- * Gradient shift function for #GS_SLIGHTLY_LIGHT.
- * @param col Input colour.
- * @return Shifted result colour.
- */
-static uint8 ShiftGradientSlightlyLight(uint8 col)
-{
-	return (col >= 255 - STEP_SIZE) ? 255: col + STEP_SIZE;
-}
-
-/**
- * Gradient shift function for #GS_LIGHT.
- * @param col Input colour.
- * @return Shifted result colour.
- */
-static uint8 ShiftGradientLight(uint8 col)
-{
-	return (col >= 255 - 2 * STEP_SIZE) ? 255: col + 2 * STEP_SIZE;
-}
-
-/**
- * Gradient shift function for #GS_VERY_LIGHT.
- * @param col Input colour.
- * @return Shifted result colour.
- */
-static uint8 ShiftGradientVeryLight(uint8 col)
-{
-	return (col >= 255 - 3 * STEP_SIZE) ? 255: col + 3 * STEP_SIZE;
-}
-
-/**
- * Gradient shift function for #GS_DAY.
- * @param col Input colour.
- * @return Shifted result colour.
- */
-static uint8 ShiftGradientDay(uint8 col)
-{
-	return (col >= 255 - 4 * STEP_SIZE) ? 255: col + 4 * STEP_SIZE;
-}
-
-/**
- * Select gradient shift function based on the \a shift.
- * @param shift Desired amount of gradient shift.
- * @return Recolour function implementing the shift.
- */
-static ShiftFunc GetGradientShiftFunc(GradientShift shift)
-{
-	switch (shift) {
-		case GS_NIGHT:          return ShiftGradientNight;
-		case GS_VERY_DARK:      return ShiftGradientVeryDark;
-		case GS_DARK:           return ShiftGradientDark;
-		case GS_SLIGHTLY_DARK:  return ShiftGradientSlightlyDark;
-		case GS_NORMAL:         return ShiftGradientNormal;
-		case GS_SLIGHTLY_LIGHT: return ShiftGradientSlightlyLight;
-		case GS_LIGHT:          return ShiftGradientLight;
-		case GS_VERY_LIGHT:     return ShiftGradientVeryLight;
-		case GS_DAY:            return ShiftGradientDay;
-		default: NOT_REACHED();
-	}
-}
-
-/**
- * Blit an image at the specified position (top-left position) relative to #blit_rect.
- * @param x Horizontal position.
- * @param y Vertical position.
- * @param img The sprite image data to blit.
- * @param recolour Sprite recolouring definition.
- * @param shift Gradient shift.
- */
-void VideoSystem::BlitImage(int x, int y, const ImageData *img, const Recolouring &recolour, GradientShift shift)
-{
-	this->BlitImages(x, y, img, 1, 1, recolour, shift);
-}
-
-/**
- * Blit a pixel to an area of \a numx times \a numy sprites.
- * @param cr Clipped rectangle.
- * @param scr_base Base address of the screen array.
- * @param xmin Minimal x position.
- * @param ymin Minimal y position.
- * @param numx Number of horizontal count.
- * @param numy Number of vertical count.
- * @param width Width of an image.
- * @param height Height of an image.
- * @param colour Pixel value to blit.
- * @note Function does not handle alpha blending of the new pixel with the background.
- */
-static void BlitPixel(const ClippedRectangle &cr, uint32 *scr_base,
-		int32 xmin, int32 ymin, uint16 numx, uint16 numy, uint16 width, uint16 height, uint32 colour)
-{
-	const int32 xend = xmin + numx * width;
-	const int32 yend = ymin + numy * height;
-	while (ymin < yend) {
-		if (ymin >= cr.height) return;
-
-		if (ymin >= 0) {
-			uint32 *scr = scr_base;
-			int32 x = xmin;
-			while (x < xend) {
-				if (x >= cr.width) break;
-				if (x >= 0) *scr = colour;
-
-				x += width;
-				scr += width;
-			}
-		}
-		ymin += height;
-		scr_base += height * cr.pitch;
-	}
+	SDL_Rect sdl_rect = RectToSDLRect(rect);
+	SDL_SetRenderDrawColor(this->renderer, SPLIT_RGBA(colour));
+	SDL_RenderFillRect(this->renderer, &sdl_rect);
 }
 
 /**
  * Blit 8bpp images to the screen.
- * @param cr Clipped rectangle to draw to.
- * @param x_base Base X coordinate of the sprite data.
- * @param y_base Base Y coordinate of the sprite data.
  * @param spr The sprite to blit.
- * @param numx Number of sprites to draw in horizontal direction.
- * @param numy Number of sprites to draw in vertical direction.
  * @param recoloured Shifted palette to use.
  */
-static void Blit8bppImages(const ClippedRectangle &cr, int32 x_base, int32 y_base, const ImageData *spr, uint16 numx, uint16 numy, const uint8 *recoloured)
+static std::vector<uint32> Blit8bppImage(const ImageData *spr, const uint8 *recoloured)
 {
-	uint32 *line_base = cr.address + x_base + cr.pitch * y_base;
-	int32 ypos = y_base;
-	for (int yoff = 0; yoff < spr->height; yoff++) {
-		uint32 offset = spr->table[yoff];
+	std::vector<uint32> mem(spr->height * spr->width);
+	for (int ypos = 0; ypos < spr->height; ypos++) {
+		uint32 offset = spr->table[ypos];
 		if (offset != INVALID_JUMP) {
-			int32 xpos = x_base;
-			uint32 *src_base = line_base;
-			for (;;) {
+			for (int xpos = 0;;) {
 				uint8 rel_off = spr->data[offset];
 				uint8 count   = spr->data[offset + 1];
 				uint8 *pixels = &spr->data[offset + 2];
 				offset += 2 + count;
 
-				xpos += rel_off & 127;
-				src_base += rel_off & 127;
-				while (count > 0) {
-					uint32 colour = _palette[recoloured[*pixels]];
-					BlitPixel(cr, src_base, xpos, ypos, numx, numy, spr->width, spr->height, colour);
+				xpos += rel_off & 0x7F;
+				for (; count > 0; count--) {
+					mem.at(ypos * spr->width + xpos) = _palette[recoloured[*pixels]];
 					pixels++;
 					xpos++;
-					src_base++;
-					count--;
 				}
-				if ((rel_off & 128) != 0) break;
+				if ((rel_off & 0x80) != 0) break;
 			}
 		}
-		line_base += cr.pitch;
-		ypos++;
 	}
+	return mem;
 }
 
 /**
  * Blit 32bpp images to the screen.
- * @param cr Clipped rectangle to draw to.
- * @param x_base Base X coordinate of the sprite data.
- * @param y_base Base Y coordinate of the sprite data.
  * @param spr The sprite to blit.
- * @param numx Number of sprites to draw in horizontal direction.
- * @param numy Number of sprites to draw in vertical direction.
  * @param recolour Sprite recolouring definition.
  * @param shift Gradient shift.
  */
-static void Blit32bppImages(const ClippedRectangle &cr, int32 x_base, int32 y_base, const ImageData *spr, uint16 numx, uint16 numy, const Recolouring &recolour, GradientShift shift)
+static std::vector<uint32> Blit32bppImage(const ImageData *spr, const Recolouring &recolour)
 {
-	uint32 *line_base = cr.address + x_base + cr.pitch * y_base;
-	ShiftFunc sf = GetGradientShiftFunc(shift);
-	int32 ypos = y_base;
+	std::vector<uint32> mem(spr->height * spr->width);
 	const uint8 *src = spr->data + 2; // Skip the length word.
-	for (int yoff = 0; yoff < spr->height; yoff++) {
-		int32 xpos = x_base;
-		uint32 *src_base = line_base;
-		for (;;) {
+	for (int ypos = 0; ypos < spr->height; ypos++) {
+		for (int xpos = 0;;) {
 			uint8 mode = *src++;
 			if (mode == 0) break;
+			int len = mode & 0x3F;
 			switch (mode >> 6) {
 				case 0: // Fully opaque pixels.
-					mode &= 0x3F;
-					for (; mode > 0; mode--) {
-						uint32 colour = MakeRGBA(sf(src[0]), sf(src[1]), sf(src[2]), OPAQUE);
-						BlitPixel(cr, src_base, xpos, ypos, numx, numy, spr->width, spr->height, colour);
+					for (; len > 0; len--) {
+						mem.at(ypos * spr->width + xpos) = MakeRGBA(src[0], src[1], src[2], OPAQUE);
 						xpos++;
-						src_base++;
 						src += 3;
 					}
 					break;
 
 				case 1: { // Partial opaque pixels.
 					uint8 opacity = *src++;
-					mode &= 0x3F;
-					for (; mode > 0; mode--) {
-						/* Cheat transparency a bit by just recolouring the previously drawn pixel */
-						uint32 old_pixel = *src_base;
-
-						uint r = sf(src[0]) * opacity + GetR(old_pixel) * (256 - opacity);
-						uint g = sf(src[1]) * opacity + GetG(old_pixel) * (256 - opacity);
-						uint b = sf(src[2]) * opacity + GetB(old_pixel) * (256 - opacity);
-
-						/* Opaque, but colour adjusted depending on the old pixel. */
-						uint32 ndest = MakeRGBA(r >> 8, g >> 8, b >> 8, OPAQUE);
-						BlitPixel(cr, src_base, xpos, ypos, numx, numy, spr->width, spr->height, ndest);
+					for (; len > 0; len--) {
+						mem.at(ypos * spr->width + xpos) = MakeRGBA(src[0], src[1], src[2], opacity);
 						xpos++;
-						src_base++;
 						src += 3;
 					}
 					break;
 				}
 				case 2: // Fully transparent pixels.
-					xpos += mode & 0x3F;
-					src_base += mode & 0x3F;
+					xpos += len;
 					break;
 
 				case 3: { // Recoloured pixels.
 					uint8 layer = *src++;
 					const uint32 *table = recolour.GetRecolourTable(layer - 1);
 					uint8 opacity = *src++;
-					mode &= 0x3F;
-					for (; mode > 0; mode--) {
-						uint32 old_pixel = *src_base;
+					for (; len > 0; len--) {
 						uint32 recoloured = table[*src++];
-
-						uint r = sf(GetR(recoloured)) * opacity + GetR(old_pixel) * (256 - opacity);
-						uint g = sf(GetG(recoloured)) * opacity + GetG(old_pixel) * (256 - opacity);
-						uint b = sf(GetB(recoloured)) * opacity + GetB(old_pixel) * (256 - opacity);
-
-						uint32 colour = MakeRGBA(r >> 8, g >> 8, b >> 8, OPAQUE);
-						BlitPixel(cr, src_base, xpos, ypos, numx, numy, spr->width, spr->height, colour);
+						mem.at(ypos * spr->width + xpos) = SetA(recoloured, opacity);
 						xpos++;
-						src_base++;
 					}
 					break;
 				}
 			}
 		}
-		line_base += cr.pitch;
-		ypos++;
 		src += 2; // Skip the length word.
 	}
+	return mem;
 }
 
 /**
@@ -822,30 +469,33 @@ static void Blit32bppImages(const ClippedRectangle &cr, int32 x_base, int32 y_ba
  * @param recolour Sprite recolouring definition.
  * @param shift Gradient shift.
  */
-void VideoSystem::BlitImages(int32 x_base, int32 y_base, const ImageData *spr, uint16 numx, uint16 numy, const Recolouring &recolour, GradientShift shift)
+void VideoSystem::BlitImages(const Point32 &img_base, const ImageData *spr, uint16 numx, uint16 numy, const Recolouring &recolour)
 {
-	this->blit_rect.ValidateAddress();
+	int x_base = img_base.x + spr->xoffset;
+	int y_base = img_base.y + spr->yoffset;
 
-	x_base += spr->xoffset;
-	y_base += spr->yoffset;
+	if (numx == 0 || numy == 0) return;
 
-	/* Don't draw wildly outside the screen. */
-	while (numx > 0 && x_base + spr->width < 0) {
-		x_base += spr->width; numx--;
-	}
-	while (numx > 0 && x_base + (numx - 1) * spr->width >= this->blit_rect.width) numx--;
-	if (numx == 0) return;
+	if (spr->image == nullptr) {
+		std::vector<uint32> img;
+		if (GB(spr->flags, IFG_IS_8BPP, 1) != 0) {
+			img = Blit8bppImage(spr, recolour.GetPalette(GS_NORMAL));
+		} else {
+			img = Blit32bppImage(spr, recolour);
+		}
 
-	while (numy > 0 && y_base + spr->height < 0) {
-		y_base += spr->height; numy--;
+		spr->image = SDL_CreateTexture(this->renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_STATIC, spr->width, spr->height);
+		SDL_UpdateTexture(spr->image, nullptr, img.data(), spr->width * sizeof(uint32));
+		SDL_SetTextureBlendMode(spr->image, SDL_BLENDMODE_BLEND);
 	}
-	while (numy > 0 && y_base + (numy - 1) * spr->height >= this->blit_rect.height) numy--;
-	if (numy == 0) return;
 
-	if (GB(spr->flags, IFG_IS_8BPP, 1) != 0) {
-		Blit8bppImages(this->blit_rect, x_base, y_base, spr, numx, numy, recolour.GetPalette(shift));
-	} else {
-		Blit32bppImages(this->blit_rect, x_base, y_base, spr, numx, numy, recolour, shift);
+	assert(spr->image != nullptr);
+
+	for (int x = 0; x < numx; x++) {
+		for (int y = 0; y < numy; y++) {
+			SDL_Rect sdl_rect = {x_base + x * spr->width, y_base + y * spr->height, spr->width, spr->height};
+			SDL_RenderCopy(this->renderer, spr->image, nullptr, &sdl_rect);
+		}
 	}
 }
 
@@ -912,7 +562,7 @@ void VideoSystem::GetNumberRangeSize(int64 smallest, int64 biggest, int *width,
  */
 void VideoSystem::BlitText(const uint8 *text, uint32 colour, int xpos, int ypos, int width, Alignment align)
 {
-	SDL_Color col = {0, 0, 0}; // Font colour does not matter as only the bitmap is used.
+	SDL_Color col = {SPLIT_RGBA(colour)};
 	SDL_Surface *surf = TTF_RenderUTF8_Solid(this->font, (const char *)text, col);
 	if (surf == nullptr) {
 		fprintf(stderr, "Rendering text failed (%s)\n", TTF_GetError());
@@ -924,7 +574,10 @@ void VideoSystem::BlitText(const uint8 *text, uint32 colour, int xpos, int ypos,
 		return;
 	}
 
+	SDL_Texture *tex = SDL_CreateTextureFromSurface(this->renderer, surf);
+
 	int real_w = std::min(surf->w, width);
+
 	switch (align) {
 		case ALG_LEFT:
 			break;
@@ -940,44 +593,10 @@ void VideoSystem::BlitText(const uint8 *text, uint32 colour, int xpos, int ypos,
 		default: NOT_REACHED();
 	}
 
-	this->blit_rect.ValidateAddress();
-
-	uint8 *src = ((uint8 *)surf->pixels);
-	uint32 *dest = this->blit_rect.address + xpos + ypos * this->blit_rect.pitch;
-	int h = surf->h;
-	if (ypos < 0) {
-		h += ypos;
-		src  -= ypos * surf->pitch;
-		dest -= ypos * this->blit_rect.pitch;
-		ypos = 0;
-	}
-	while (h > 0) {
-		if (ypos >= this->blit_rect.height) break;
-		uint8 *src2 = src;
-		uint32 *dest2 = dest;
-		int w = real_w;
-		int x = xpos;
-		if (x < 0) {
-			w += x;
-			if (w <= 0) break;
-			dest2 -= x;
-			src2 -= x;
-			x = 0;
-		}
-		while (w > 0) {
-			if (x >= this->blit_rect.width) break;
-			if (*src2 != 0) *dest2 = colour;
-			src2++;
-			dest2++;
-			x++;
-			w--;
-		}
-		ypos++;
-		src  += surf->pitch;
-		dest += this->blit_rect.pitch;
-		h--;
-	}
+	SDL_Rect sdl_rect = {xpos, ypos, real_w, surf->h};
+	SDL_RenderCopy(this->renderer, tex, nullptr, &sdl_rect);
 
+	SDL_DestroyTexture(tex);
 	SDL_FreeSurface(surf);
 }
 
@@ -989,51 +608,8 @@ void VideoSystem::BlitText(const uint8 *text, uint32 colour, int xpos, int ypos,
  */
 void VideoSystem::DrawLine(const Point16 &start, const Point16 &end, uint32 colour)
 {
-	int16 dx, inc_x, dy, inc_y;
-	if (start.x > end.x) {
-		dx = start.x - end.x;
-		inc_x = -1;
-	} else {
-		dx = end.x - start.x;
-		inc_x = 1;
-	}
-	if (start.y > end.y) {
-		dy = start.y - end.y;
-		inc_y = -1;
-	} else {
-		dy = end.y - start.y;
-		inc_y = 1;
-	}
-
-	int16 step = std::min(dx, dy);
-	int16 pos_x = start.x;
-	int16 pos_y = start.y;
-	int16 sum_x = 0;
-	int16 sum_y = 0;
-
-	this->blit_rect.ValidateAddress();
-	uint32 *dest = this->blit_rect.address + pos_x + pos_y * this->blit_rect.pitch;
-
-	for (;;) {
-		/* Blit pixel. */
-		if (pos_x >= 0 && pos_x < this->blit_rect.width && pos_y >= 0 && pos_y < this->blit_rect.height) {
-			*dest = colour;
-		}
-		if (pos_x == end.x && pos_y == end.y) break;
-
-		sum_x += step;
-		sum_y += step;
-		if (sum_x >= dy) {
-			pos_x += inc_x;
-			dest += inc_x;
-			sum_x -= dy;
-		}
-		if (sum_y >= dx) {
-			pos_y += inc_y;
-			dest += inc_y * this->blit_rect.pitch;
-			sum_y -= dx;
-		}
-	}
+	SDL_SetRenderDrawColor(this->renderer, SPLIT_RGBA(colour));
+	SDL_RenderDrawLine(this->renderer, start.x, start.y, end.x, end.y);
 }
 
 /**
@@ -1043,12 +619,7 @@ void VideoSystem::DrawLine(const Point16 &start, const Point16 &end, uint32 colo
  */
 void VideoSystem::DrawRectangle(const Rectangle32 &rect, uint32 colour)
 {
-	Point16 top_left    (static_cast<int16>(rect.base.x),                  static_cast<int16>(rect.base.y));
-	Point16 top_right   (static_cast<int16>(rect.base.x + rect.width - 1), static_cast<int16>(rect.base.y));
-	Point16 bottom_left (static_cast<int16>(rect.base.x),                  static_cast<int16>(rect.base.y + rect.height - 1));
-	Point16 bottom_right(static_cast<int16>(rect.base.x + rect.width - 1), static_cast<int16>(rect.base.y + rect.height - 1));
-	this->DrawLine(top_left, top_right, colour);
-	this->DrawLine(top_left, bottom_left, colour);
-	this->DrawLine(top_right, bottom_right, colour);
-	this->DrawLine(bottom_left, bottom_right, colour);
+	SDL_Rect sdl_rect = RectToSDLRect(rect);
+	SDL_SetRenderDrawColor(this->renderer, SPLIT_RGBA(colour));
+	SDL_RenderDrawRect(this->renderer, &sdl_rect);
 }
diff --git a/src/video.h b/src/video.h
index 6f435a9..2d6f81e 100644
--- a/src/video.h
+++ b/src/video.h
@@ -22,27 +22,6 @@ void QuitProgram();
 
 class ImageData;
 
-/** Clipped rectangle. */
-class ClippedRectangle {
-public:
-	ClippedRectangle();
-	ClippedRectangle(uint16 x, uint16 y, uint16 w, uint16 h);
-	ClippedRectangle(const ClippedRectangle &cr, uint16 x, uint16 y, uint16 w, uint16 h);
-
-	ClippedRectangle(const ClippedRectangle &cr);
-	ClippedRectangle &operator=(const ClippedRectangle &cr);
-
-	void ValidateAddress();
-
-	uint16 absx;     ///< Absolute X position in the screen of the top-left.
-	uint16 absy;     ///< Absolute Y position in the screen of the top-left.
-	uint16 width;    ///< Number of columns.
-	uint16 height;   ///< Number of rows.
-
-	uint32 *address; ///< Base address. @note Call #ValidateAddress prior to use.
-	int32 pitch;     ///< Pitch of a row in bytes. @note Call #ValidateAddress prior to use.
-};
-
 /** How to align text during drawing. */
 enum Alignment {
 	ALG_LEFT,   ///< Align to the left edge.
@@ -54,15 +33,12 @@ enum Alignment {
  * Class representing the video system.
  */
 class VideoSystem {
-	friend class ClippedRectangle;
-
 public:
 	VideoSystem();
 	~VideoSystem();
 
 	std::string Initialize(const char *font_name, int font_size);
 	bool SetResolution(const Point32 &res);
-	void GetResolutions();
 	void MainLoop();
 	void Shutdown();
 
@@ -98,12 +74,18 @@ public:
 	void MarkDisplayDirty();
 	void MarkDisplayDirty(const Rectangle32 &rect);
 
-	void SetClippedRectangle(const ClippedRectangle &cr);
-	ClippedRectangle GetClippedRectangle();
+	void FillSurface(const Rectangle32 &rect, uint32 colour);
 
-	void FillSurface(uint32 colour, const Rectangle32 &rect);
-	void BlitImage(const Point32 &img_base, const ImageData *spr, const Recolouring &recolour, GradientShift shift);
-	void BlitImage(int x, int y, const ImageData *img, const Recolouring &recolour, GradientShift shift);
+	/**
+	 * Blit a single sprite.
+	 * @param img_base Coordinates of the sprite data (relative to window).
+	 * @param spr The sprite to blit.
+	 * @param recolour Sprite recolouring definition.
+	 */
+	void BlitImage(const Point32 &img_base, const ImageData *spr, const Recolouring &recolour)
+	{
+		this->BlitImages(img_base, spr, 1, 1, recolour);
+	}
 
 	/**
 	 * Blit a row of sprites.
@@ -115,7 +97,7 @@ public:
 	 */
 	inline void BlitHorizontal(int32 xmin, uint16 numx, int32 y, const ImageData *spr, const Recolouring &recolour)
 	{
-		this->BlitImages(xmin, y, spr, numx, 1, recolour);
+		this->BlitImages({xmin, y}, spr, numx, 1, recolour);
 	}
 
 	/**
@@ -128,10 +110,10 @@ public:
 	 */
 	inline void BlitVertical(int32 ymin, uint16 numy, int32 x, const ImageData *spr, const Recolouring &recolour)
 	{
-		this->BlitImages(x, ymin, spr, 1, numy, recolour);
+		this->BlitImages({x, ymin}, spr, 1, numy, recolour);
 	}
 
-	void BlitImages(int32 x_base, int32 y_base, const ImageData *spr, uint16 numx, uint16 numy, const Recolouring &recolour, GradientShift shift = GS_NORMAL);
+	void BlitImages(const Point32 &img_base, const ImageData *spr, uint16 numx, uint16 numy, const Recolouring &recolour);
 
 	void FinishRepaint();
 
@@ -144,6 +126,9 @@ public:
 		return this->font_height;
 	}
 
+	void SetClippedRectangle(const Rectangle32 &rect);
+	Rectangle32 GetClippedRectangle();
+
 	void GetTextSize(const uint8 *text, int *width, int *height);
 	void GetNumberRangeSize(int64 smallest, int64 biggest, int *width, int *height);
 	void BlitText(const uint8 *text, uint32 colour, int xpos, int ypos, int width = 0x7FFF, Alignment align = ALG_LEFT);
@@ -164,12 +149,20 @@ private:
 	SDL_Window *window;         ///< %Window of the application.
 	SDL_Renderer *renderer;     ///< GPU renderer to the application window.
 	SDL_Texture *texture;       ///< GPU Texture storage of the application window.
-	uint32 *mem;                ///< Memory used for blitting the application display.
-	ClippedRectangle blit_rect; ///< %Rectangle to blit in.
+	Rectangle32 blit_rect;
 	Point16 digit_size;         ///< Size of largest digit (initially a zero-size).
 
+	void GetResolutions();
 	bool HandleEvent();
 	void MarkDisplayClean();
+
+	template<class PZ, class SZ>
+	SDL_Rect RectToSDLRect(const Rectangle<PZ, SZ> &rect)
+	{
+		SDL_Rect sdl_rect = {static_cast<int>(rect.base.x), static_cast<int>(rect.base.y),
+		                     static_cast<int>(rect.width),  static_cast<int>(rect.height)};
+		return sdl_rect;
+	}
 };
 
 extern VideoSystem _video;
diff --git a/src/viewport.cpp b/src/viewport.cpp
index eae8aa3..bfead68 100644
--- a/src/viewport.cpp
+++ b/src/viewport.cpp
@@ -1022,7 +1022,7 @@ void SpriteCollector::CollectVoxel(const Voxel *voxel, int xpos, int ypos, int z
 
 		gslope = voxel->GetGroundSlope();
 	}
-	
+
 	/* Fences */
 	for (TileEdge edge = EDGE_BEGIN; edge < EDGE_COUNT; edge++) {
 		FenceType fence_type = voxel->GetFenceType(edge);
@@ -1404,21 +1404,14 @@ void Viewport::OnDraw()
 	collector.Collect(this->additions_enabled && this->additions_displayed);
 	static const Recolouring recolour;
 
-	_video.FillSurface(MakeRGBA(0, 0, 0, OPAQUE), this->rect); // Black background.
-
-	ClippedRectangle cr = _video.GetClippedRectangle();
-	assert(this->rect.base.x >= 0 && this->rect.base.y >= 0);
-	ClippedRectangle draw_rect(cr, this->rect.base.x, this->rect.base.y, this->rect.width, this->rect.height);
-	_video.SetClippedRectangle(draw_rect);
-
-	GradientShift gs = static_cast<GradientShift>(GS_LIGHT - _weather.GetWeatherType());
 	for (const auto &iter : collector.draw_images) {
 		const DrawData &dd = iter;
 		const Recolouring &rec = (dd.recolour == nullptr) ? recolour : *dd.recolour;
-		_video.BlitImage(dd.base, dd.sprite, rec, gs);
+		_video.BlitImage(dd.base, dd.sprite, rec);
 	}
 
-	_video.SetClippedRectangle(cr);
+	/// \todo Actually change brightness/darkness overlay depending on weather
+	_video.FillSurface(this->rect, MakeRGBA(0, 0, 0, 0));
 }
 
 /**
diff --git a/src/widget.cpp b/src/widget.cpp
index 6139ada..a96c9e2 100644
--- a/src/widget.cpp
+++ b/src/widget.cpp
@@ -285,7 +285,7 @@ void LeafWidget::Draw(const GuiWindow *w)
 		} else if ((this->flags & LWF_PRESSED) != 0) {
 			spr_num += WCS_EMPTY_PRESSED;
 		}
-		_video.BlitImage(left, top, _gui_sprites.radio_button.sprites[spr_num], rc, GS_NORMAL);
+		_video.BlitImage({left, top}, _gui_sprites.radio_button.sprites[spr_num], rc);
 		return;
 	}
 	assert(this->wtype == WT_CLOSEBOX);
@@ -305,7 +305,7 @@ void LeafWidget::Draw(const GuiWindow *w)
 	int yoffset = top + (bottom - 1 - top - _gui_sprites.close_sprite->height) / 2;
 
 	const ImageData *imgdata = _gui_sprites.close_sprite;
-	if (imgdata != nullptr) _video.BlitImage(xoffset + 1, yoffset + 1, imgdata, rc, GS_NORMAL);
+	if (imgdata != nullptr) _video.BlitImage({xoffset + 1, yoffset + 1}, imgdata, rc);
 	/* Closebox is never shaded. */
 }
 
@@ -464,7 +464,7 @@ void DataWidget::Draw(const GuiWindow *w)
 			int xoffset = left + (right + 1 - left - this->value_width) / 2 - rect.base.x;
 			yoffset -= rect.base.y;
 			const ImageData *imgdata = _sprite_manager.GetTableSprite(this->value);
-			if (imgdata != nullptr) _video.BlitImage(xoffset + pressed, yoffset + pressed, imgdata, rc, GS_NORMAL);
+			if (imgdata != nullptr) _video.BlitImage({xoffset + pressed, yoffset + pressed}, imgdata, rc);
 			break;
 		}
 
@@ -477,7 +477,7 @@ void DataWidget::Draw(const GuiWindow *w)
 
 			if (imgdata != nullptr) {
 				int triangle_yoff = top + (bottom + 1 - top - imgrect.height) / 2 + pressed;
-				_video.BlitImage(right - imgrect.width + pressed, triangle_yoff, imgdata, rc, GS_NORMAL);
+				_video.BlitImage({right - imgrect.width + pressed, triangle_yoff}, imgdata, rc);
 			}
 			/* Note: Reusing the same string parameters from above */
 			if (this->value != STR_NULL) DrawString(w->TranslateStringNumber(this->value), TEXT_WHITE, left + pressed, yoffset + pressed, right - left - imgrect.width, align);
@@ -553,12 +553,12 @@ void ScrollbarWidget::Draw(const GuiWindow *w)
 	Point32 pos(w->GetWidgetScreenX(this), w->GetWidgetScreenY(this));
 
 	/* Draw left/up button. */
-	_video.BlitImage(pos, imd[WLS_LEFT_BUTTON], rc, GS_NORMAL);
+	_video.BlitImage(pos, imd[WLS_LEFT_BUTTON], rc);
 	if (this->wtype == WT_HOR_SCROLLBAR) pos.x += imd[WLS_LEFT_BUTTON]->width;
 	if (this->wtype != WT_HOR_SCROLLBAR) pos.y += imd[WLS_LEFT_BUTTON]->height;
 
 	/* Draw top/left underground. */
-	_video.BlitImage(pos, imd[WLS_LEFT_BED], rc, GS_NORMAL);
+	_video.BlitImage(pos, imd[WLS_LEFT_BED], rc);
 	if (this->wtype == WT_HOR_SCROLLBAR) pos.x += imd[WLS_LEFT_BED]->width;
 	if (this->wtype != WT_HOR_SCROLLBAR) pos.y += imd[WLS_LEFT_BED]->height;
 
@@ -578,7 +578,7 @@ void ScrollbarWidget::Draw(const GuiWindow *w)
 	}
 
 	/* Draw bottom/right underground. */
-	_video.BlitImage(pos, imd[WLS_RIGHT_BED], rc, GS_NORMAL);
+	_video.BlitImage(pos, imd[WLS_RIGHT_BED], rc);
 	if (this->wtype == WT_HOR_SCROLLBAR) {
 		pos.x += imd[WLS_RIGHT_BED]->width;
 	} else {
@@ -586,7 +586,7 @@ void ScrollbarWidget::Draw(const GuiWindow *w)
 	}
 
 	/* Draw right/bottom button. */
-	_video.BlitImage(pos, imd[WLS_RIGHT_BUTTON], rc, GS_NORMAL);
+	_video.BlitImage(pos, imd[WLS_RIGHT_BUTTON], rc);
 
 	int start_edge, slider_length;
 	this->CalculateSliderPosition(&start_edge, &slider_length);
@@ -598,7 +598,7 @@ void ScrollbarWidget::Draw(const GuiWindow *w)
 	}
 
 	/* Draw top/left slider. */
-	_video.BlitImage(pos, imd[WLS_LEFT_SLIDER], rc, GS_NORMAL);
+	_video.BlitImage(pos, imd[WLS_LEFT_SLIDER], rc);
 	if (this->wtype == WT_HOR_SCROLLBAR) {
 		pos.x += imd[WLS_LEFT_SLIDER]->width;
 	} else {
@@ -617,7 +617,7 @@ void ScrollbarWidget::Draw(const GuiWindow *w)
 	}
 
 	/* Draw bottom/right slider. */
-	_video.BlitImage(pos, imd[WLS_RIGHT_SLIDER], rc, GS_NORMAL);
+	_video.BlitImage(pos, imd[WLS_RIGHT_SLIDER], rc);
 }
 
 /**
diff --git a/src/window.cpp b/src/window.cpp
index 5fc0127..1eb9181 100644
--- a/src/window.cpp
+++ b/src/window.cpp
@@ -986,12 +986,6 @@ void UpdateWindows()
 {
 	if (!_video.DisplayNeedsRepaint()) return;
 
-	/* Until the entire background is covered by the main display, clean the entire display to ensure deleted
-	 * windows truly disappear (even if there is no other window behind it).
-	 */
-	Rectangle32 rect(0, 0, _video.GetXSize(), _video.GetYSize());
-	_video.FillSurface(MakeRGBA(0, 0, 0, OPAQUE), rect);
-
 	Window *w = _manager.bottom;
 	while (w != nullptr) {
 		w->OnDraw();

Mark as private