From ba6018aea44ec6cdf0245acb116deec64a5941fa Mon Sep 17 00:00:00 2001
From: Jaime Passos <lazymyuutsu@gmail.com>
Date: Sun, 26 Jan 2020 22:52:15 -0300
Subject: [PATCH] Optimise pixel drawing
---
src/am_map.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/src/am_map.c b/src/am_map.c
index 0f8f0f74f5..c06bd25612 100644
--- a/src/am_map.c
+++ b/src/am_map.c
@@ -205,6 +205,7 @@ static boolean followplayer = true; // specifies whether to follow the player ar
typedef void (*AMDRAWFLINEFUNC) (const fline_t *fl, INT32 color);
static AMDRAWFLINEFUNC AM_drawFline;
+static void AM_drawPixel(INT32 xx, INT32 yy, INT32 cc);
static void AM_drawFline_soft(const fline_t *fl, INT32 color);
static void AM_activateNewScale(void)
@@ -712,6 +713,17 @@ static boolean AM_clipMline(const mline_t *ml, fline_t *fl)
}
#undef DOOUTCODE
+//
+// Draws a pixel.
+//
+static void AM_drawPixel(INT32 xx, INT32 yy, INT32 cc)
+{
+ UINT8 *dest = screens[0];
+ if (xx < 0 || yy < 0 || xx >= vid.width || yy >= vid.height)
+ return; // off the screen
+ dest[(yy*vid.rowbytes) + (xx * vid.bpp)] = (cc & 0xFF);
+}
+
//
// Classic Bresenham w/ whatever optimizations needed for speed
//
@@ -733,8 +745,6 @@ static void AM_drawFline_soft(const fline_t *fl, INT32 color)
}
#endif
- #define PUTDOT(xx,yy,cc) V_DrawFill(xx,yy,1,1,cc|V_NOSCALESTART);
-
dx = fl->b.x - fl->a.x;
ax = 2 * (dx < 0 ? -dx : dx);
sx = dx < 0 ? -1 : 1;
@@ -751,7 +761,7 @@ static void AM_drawFline_soft(const fline_t *fl, INT32 color)
d = ay - ax/2;
for (;;)
{
- PUTDOT(x, y, color)
+ AM_drawPixel(x, y, color);
if (x == fl->b.x)
return;
if (d >= 0)
@@ -768,7 +778,7 @@ static void AM_drawFline_soft(const fline_t *fl, INT32 color)
d = ax - ay/2;
for (;;)
{
- PUTDOT(x, y, color)
+ AM_drawPixel(x, y, color);
if (y == fl->b.y)
return;
if (d >= 0)
@@ -780,8 +790,6 @@ static void AM_drawFline_soft(const fline_t *fl, INT32 color)
d += ax;
}
}
-
- #undef PUTDOT
}
//
--
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