Codechange: [Blitter] Change DrawLine to be templated

This is remove per-pixel overheads due to use of the SetPixel virtual
method.
These overheads included:
* expensive virtual method call which prevents inlining
* palette lookup for every pixel
* branch on whether palette animation is enabled on every pixel

Regenerate project files.

1 files changed, 0 insertions, 138 deletions

diff --git a/src/blitter/base.cpp b/src/blitter/base.cpp
deleted file mode 100644
index e83df2e71..000000000
--- a/src/blitter/base.cpp
+++ /dev/null
@@ -1,138 +0,0 @@
-/* $Id$ */
-
-/*
- * This file is part of OpenTTD.
- * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
- * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/** @file base.cpp Implementation of the base for all blitters. */
-
-#include "../stdafx.h"
-#include "base.hpp"
-#include "../core/math_func.hpp"
-
-#include "../safeguards.h"
-
-void Blitter::DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash)
-{
-	int dy;
-	int dx;
-	int stepx;
-	int stepy;
-
-	dy = (y2 - y) * 2;
-	if (dy < 0) {
-		dy = -dy;
-		stepy = -1;
-	} else {
-		stepy = 1;
-	}
-
-	dx = (x2 - x) * 2;
-	if (dx < 0) {
-		dx = -dx;
-		stepx = -1;
-	} else {
-		stepx = 1;
-	}
-
-	if (dx == 0 && dy == 0) {
-		/* The algorithm below cannot handle this special case; make it work at least for line width 1 */
-		if (x >= 0 && x < screen_width && y >= 0 && y < screen_height) this->SetPixel(video, x, y, colour);
-		return;
-	}
-
-	int frac_diff = width * max(dx, dy);
-	if (width > 1) {
-		/* compute frac_diff = width * sqrt(dx*dx + dy*dy)
-		 * Start interval:
-		 *    max(dx, dy) <= sqrt(dx*dx + dy*dy) <= sqrt(2) * max(dx, dy) <= 3/2 * max(dx, dy) */
-		int frac_sq = width * width * (dx * dx + dy * dy);
-		int frac_max = 3 * frac_diff / 2;
-		while (frac_diff < frac_max) {
-			int frac_test = (frac_diff + frac_max) / 2;
-			if (frac_test * frac_test < frac_sq) {
-				frac_diff = frac_test + 1;
-			} else {
-				frac_max = frac_test - 1;
-			}
-		}
-	}
-
-	int gap = dash;
-	if (dash == 0) dash = 1;
-	int dash_count = 0;
-	if (dx > dy) {
-		int y_low     = y;
-		int y_high    = y;
-		int frac_low  = dy - frac_diff / 2;
-		int frac_high = dy + frac_diff / 2;
-
-		while (frac_low + dx / 2 < 0) {
-			frac_low += dx;
-			y_low -= stepy;
-		}
-		while (frac_high - dx / 2 >= 0) {
-			frac_high -= dx;
-			y_high += stepy;
-		}
-		x2 += stepx;
-
-		while (x != x2) {
-			if (dash_count < dash && x >= 0 && x < screen_width) {
-				for (int y = y_low; y != y_high; y += stepy) {
-					if (y >= 0 && y < screen_height) this->SetPixel(video, x, y, colour);
-				}
-			}
-			if (frac_low >= 0) {
-				y_low += stepy;
-				frac_low -= dx;
-			}
-			if (frac_high >= 0) {
-				y_high += stepy;
-				frac_high -= dx;
-			}
-			x += stepx;
-			frac_low += dy;
-			frac_high += dy;
-			if (++dash_count >= dash + gap) dash_count = 0;
-		}
-	} else {
-		int x_low     = x;
-		int x_high    = x;
-		int frac_low  = dx - frac_diff / 2;
-		int frac_high = dx + frac_diff / 2;
-
-		while (frac_low + dy / 2 < 0) {
-			frac_low += dy;
-			x_low -= stepx;
-		}
-		while (frac_high - dy / 2 >= 0) {
-			frac_high -= dy;
-			x_high += stepx;
-		}
-		y2 += stepy;
-
-		while (y != y2) {
-			if (dash_count < dash && y >= 0 && y < screen_height) {
-				for (int x = x_low; x != x_high; x += stepx) {
-					if (x >= 0 && x < screen_width) this->SetPixel(video, x, y, colour);
-				}
-			}
-			if (frac_low >= 0) {
-				x_low += stepx;
-				frac_low -= dy;
-			}
-			if (frac_high >= 0) {
-				x_high += stepx;
-				frac_high -= dy;
-			}
-			y += stepy;
-			frac_low += dx;
-			frac_high += dx;
-			if (++dash_count >= dash + gap) dash_count = 0;
-		}
-	}
-}