# HG changeset patch
# User peter1138 <peter1138@openttd.org>
# Date 2014-04-13 19:22:23
# Node ID fc9d03d2e2b890dcf479e634a6714ab4e3cd8f62
# Parent  d44cc377eeb3cd5955d1447cbcbdfd6914929952

(svn r26463) -Fix (r10190ish): Add special handling for PALETTE_CRASH to work for non-8bpp-mapped sprites.

diff --git a/src/blitter/32bpp_anim.cpp b/src/blitter/32bpp_anim.cpp
--- a/src/blitter/32bpp_anim.cpp
+++ b/src/blitter/32bpp_anim.cpp
@@ -133,6 +133,46 @@ inline void Blitter_32bppAnim::Draw(cons
 					}
 					break;
 
+				case BM_CRASH_REMAP:
+					if (src_px->a == 255) {
+						do {
+							uint m = *src_n;
+							if (m == 0) {
+								uint8 g = MakeDark(src_px->r, src_px->g, src_px->b);
+								*dst = ComposeColourRGBA(g, g, g, src_px->a, *dst);
+								*anim = 0;
+							} else {
+								uint r = remap[GB(m, 0, 8)];
+								*anim = r | (m & 0xFF00);
+								if (r != 0) *dst = this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8));
+							}
+							anim++;
+							dst++;
+							src_px++;
+							src_n++;
+						} while (--n != 0);
+					} else {
+						do {
+							uint m = *src_n;
+							if (m == 0) {
+								if (src_px->a != 0) {
+									uint8 g = MakeDark(src_px->r, src_px->g, src_px->b);
+									*dst = ComposeColourRGBA(g, g, g, src_px->a, *dst);
+									*anim = 0;
+								}
+							} else {
+								uint r = remap[GB(m, 0, 8)];
+								*anim = 0;
+								if (r != 0) *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8)), src_px->a, *dst);
+							}
+							anim++;
+							dst++;
+							src_px++;
+							src_n++;
+						} while (--n != 0);
+					}
+					break;
+
 				case BM_TRANSPARENT:
 					/* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
 					 *  This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
@@ -208,6 +248,7 @@ void Blitter_32bppAnim::Draw(Blitter::Bl
 		case BM_NORMAL:       Draw<BM_NORMAL>      (bp, zoom); return;
 		case BM_COLOUR_REMAP: Draw<BM_COLOUR_REMAP>(bp, zoom); return;
 		case BM_TRANSPARENT:  Draw<BM_TRANSPARENT> (bp, zoom); return;
+		case BM_CRASH_REMAP:  Draw<BM_CRASH_REMAP> (bp, zoom); return;
 	}
 }
 
diff --git a/src/blitter/32bpp_anim_sse4.cpp b/src/blitter/32bpp_anim_sse4.cpp
--- a/src/blitter/32bpp_anim_sse4.cpp
+++ b/src/blitter/32bpp_anim_sse4.cpp
@@ -313,6 +313,25 @@ bmcr_alpha_blend_single:
 					if (src[0].a) anim[0] = 0;
 				}
 				break;
+
+			case BM_CRASH_REMAP:
+				for (uint x = (uint) bp->width; x > 0; x--) {
+					if (src_mv->m == 0) {
+						if (src->a != 0) {
+							uint8 g = MakeDark(src->r, src->g, src->b);
+							*dst = ComposeColourRGBA(g, g, g, src->a, *dst);
+							*anim = 0;
+						}
+					} else {
+						uint r = remap[src_mv->m];
+						if (r != 0) *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(r), src_mv->v), src->a, *dst);
+					}
+					src_mv++;
+					dst++;
+					src++;
+					anim++;
+				}
+				break;
 		}
 
 next_line:
@@ -373,6 +392,7 @@ bm_normal:
 			}
 			break;
 		case BM_TRANSPARENT:  Draw<BM_TRANSPARENT, RM_NONE, BT_NONE, true, true>(bp, zoom); return;
+		case BM_CRASH_REMAP:  Draw<BM_CRASH_REMAP, RM_NONE, BT_NONE, true, true>(bp, zoom); return;
 	}
 }
 
diff --git a/src/blitter/32bpp_base.hpp b/src/blitter/32bpp_base.hpp
--- a/src/blitter/32bpp_base.hpp
+++ b/src/blitter/32bpp_base.hpp
@@ -113,6 +113,19 @@ public:
 	}
 
 	/**
+	 * Make a colour dark grey, for specialized 32bpp remapping.
+	 * @param r red component
+	 * @param g green component
+	 * @param b blue component
+	 * @return the brightness value of the new colour, now dark grey.
+	 */
+	static inline uint8 MakeDark(uint8 r, uint8 g, uint8 b)
+	{
+		/* Magic-numbers are ~66% of those used in MakeGrey() */
+		return ((r * 13063) + (g * 25647) + (b * 4981)) / 65536;
+	}
+
+	/**
 	 * Make a colour grey - based.
 	 * @param colour the colour to make grey.
 	 * @return the new colour, now grey.
diff --git a/src/blitter/32bpp_optimized.cpp b/src/blitter/32bpp_optimized.cpp
--- a/src/blitter/32bpp_optimized.cpp
+++ b/src/blitter/32bpp_optimized.cpp
@@ -141,6 +141,40 @@ inline void Blitter_32bppOptimized::Draw
 					}
 					break;
 
+				case BM_CRASH_REMAP:
+					if (src_px->a == 255) {
+						do {
+							uint m = *src_n;
+							if (m == 0) {
+								uint8 g = MakeDark(src_px->r, src_px->g, src_px->b);
+								*dst = ComposeColourRGBA(g, g, g, src_px->a, *dst);
+							} else {
+								uint r = remap[GB(m, 0, 8)];
+								if (r != 0) *dst = this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8));
+							}
+							dst++;
+							src_px++;
+							src_n++;
+						} while (--n != 0);
+					} else {
+						do {
+							uint m = *src_n;
+							if (m == 0) {
+								if (src_px->a != 0) {
+									uint8 g = MakeDark(src_px->r, src_px->g, src_px->b);
+									*dst = ComposeColourRGBA(g, g, g, src_px->a, *dst);
+								}
+							} else {
+								uint r = remap[GB(m, 0, 8)];
+								if (r != 0) *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8)), src_px->a, *dst);
+							}
+							dst++;
+							src_px++;
+							src_n++;
+						} while (--n != 0);
+					}
+					break;
+
 				case BM_TRANSPARENT:
 					/* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
 					 *  This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
@@ -204,6 +238,7 @@ void Blitter_32bppOptimized::Draw(Blitte
 		case BM_NORMAL:       Draw<BM_NORMAL>      (bp, zoom); return;
 		case BM_COLOUR_REMAP: Draw<BM_COLOUR_REMAP>(bp, zoom); return;
 		case BM_TRANSPARENT:  Draw<BM_TRANSPARENT> (bp, zoom); return;
+		case BM_CRASH_REMAP:  Draw<BM_CRASH_REMAP> (bp, zoom); return;
 	}
 }
 
diff --git a/src/blitter/32bpp_simple.cpp b/src/blitter/32bpp_simple.cpp
--- a/src/blitter/32bpp_simple.cpp
+++ b/src/blitter/32bpp_simple.cpp
@@ -45,6 +45,17 @@ void Blitter_32bppSimple::Draw(Blitter::
 					}
 					break;
 
+				case BM_CRASH_REMAP:
+					if (src->m == 0) {
+						if (src->a != 0) {
+							uint8 g = MakeDark(src->r, src->g, src->b);
+							*dst = ComposeColourRGBA(g, g, g, src->a, *dst);
+						}
+					} else {
+						if (bp->remap[src->m] != 0) *dst = ComposeColourPA(this->AdjustBrightness(this->LookupColourInPalette(bp->remap[src->m]), src->v), src->a, *dst);
+					}
+					break;
+
 				case BM_TRANSPARENT:
 					/* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
 					 *  This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
diff --git a/src/blitter/32bpp_sse_func.hpp b/src/blitter/32bpp_sse_func.hpp
--- a/src/blitter/32bpp_sse_func.hpp
+++ b/src/blitter/32bpp_sse_func.hpp
@@ -238,13 +238,13 @@ inline void Blitter_32bppSSE4::Draw(cons
 	for (int y = bp->height; y != 0; y--) {
 		Colour *dst = dst_line;
 		const Colour *src = src_rgba_line + META_LENGTH;
-		if (mode == BM_COLOUR_REMAP) src_mv = src_mv_line;
+		if (mode == BM_COLOUR_REMAP || mode == BM_CRASH_REMAP) src_mv = src_mv_line;
 
 		if (read_mode == RM_WITH_MARGIN) {
 			assert(bt_last == BT_NONE); // or you must ensure block type is preserved
 			src += src_rgba_line[0].data;
 			dst += src_rgba_line[0].data;
-			if (mode == BM_COLOUR_REMAP) src_mv += src_rgba_line[0].data;
+			if (mode == BM_COLOUR_REMAP || mode == BM_CRASH_REMAP) src_mv += src_rgba_line[0].data;
 			const int width_diff = si->sprite_width - bp->width;
 			effective_width = bp->width - (int) src_rgba_line[0].data;
 			const int delta_diff = (int) src_rgba_line[1].data - width_diff;
@@ -377,10 +377,27 @@ bmcr_alpha_blend_single:
 					dst->data = _mm_cvtsi128_si32(DarkenTwoPixels(srcABCD, dstABCD, DARKEN_PARAM_1, DARKEN_PARAM_2));
 				}
 				break;
+
+			case BM_CRASH_REMAP:
+				for (uint x = (uint) bp->width; x > 0; x--) {
+					if (src_mv->m == 0) {
+						if (src->a != 0) {
+							uint8 g = MakeDark(src->r, src->g, src->b);
+							*dst = ComposeColourRGBA(g, g, g, src->a, *dst);
+						}
+					} else {
+						uint r = remap[src_mv->m];
+						if (r != 0) *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(r), src_mv->v), src->a, *dst);
+					}
+					src_mv++;
+					dst++;
+					src++;
+				}
+				break;
 		}
 
 next_line:
-		if (mode == BM_COLOUR_REMAP) src_mv_line += si->sprite_width;
+		if (mode == BM_COLOUR_REMAP || mode == BM_CRASH_REMAP) src_mv_line += si->sprite_width;
 		src_rgba_line = (const Colour*) ((const byte*) src_rgba_line + si->sprite_line_size);
 		dst_line += bp->pitch;
 	}
@@ -429,6 +446,7 @@ bm_normal:
 				Draw<BM_COLOUR_REMAP, RM_WITH_MARGIN, BT_NONE, true>(bp, zoom); return;
 			}
 		case BM_TRANSPARENT:  Draw<BM_TRANSPARENT, RM_NONE, BT_NONE, true>(bp, zoom); return;
+		case BM_CRASH_REMAP:  Draw<BM_CRASH_REMAP, RM_NONE, BT_NONE, true>(bp, zoom); return;
 	}
 }
 #endif /* FULL_ANIMATION */
diff --git a/src/blitter/8bpp_optimized.cpp b/src/blitter/8bpp_optimized.cpp
--- a/src/blitter/8bpp_optimized.cpp
+++ b/src/blitter/8bpp_optimized.cpp
@@ -83,7 +83,8 @@ void Blitter_8bppOptimized::Draw(Blitter
 			width -= pixels;
 
 			switch (mode) {
-				case BM_COLOUR_REMAP: {
+				case BM_COLOUR_REMAP:
+				case BM_CRASH_REMAP: {
 					const uint8 *remap = bp->remap;
 					do {
 						uint m = remap[*src];
diff --git a/src/blitter/8bpp_simple.cpp b/src/blitter/8bpp_simple.cpp
--- a/src/blitter/8bpp_simple.cpp
+++ b/src/blitter/8bpp_simple.cpp
@@ -37,6 +37,7 @@ void Blitter_8bppSimple::Draw(Blitter::B
 
 			switch (mode) {
 				case BM_COLOUR_REMAP:
+				case BM_CRASH_REMAP:
 					colour = bp->remap[*src];
 					break;
 
diff --git a/src/blitter/base.hpp b/src/blitter/base.hpp
--- a/src/blitter/base.hpp
+++ b/src/blitter/base.hpp
@@ -20,6 +20,7 @@ enum BlitterMode {
 	BM_NORMAL,       ///< Perform the simple blitting.
 	BM_COLOUR_REMAP, ///< Perform a colour remapping.
 	BM_TRANSPARENT,  ///< Perform transparency colour remapping.
+	BM_CRASH_REMAP,  ///< Perform a crash remapping.
 };
 
 /**
diff --git a/src/gfx.cpp b/src/gfx.cpp
--- a/src/gfx.cpp
+++ b/src/gfx.cpp
@@ -788,7 +788,7 @@ void DrawSpriteViewport(SpriteID img, Pa
 		GfxMainBlitterViewport(GetSprite(real_sprite, ST_NORMAL), x, y, BM_TRANSPARENT, sub, real_sprite);
 	} else if (pal != PAL_NONE) {
 		_colour_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH), ST_RECOLOUR) + 1;
-		GfxMainBlitterViewport(GetSprite(real_sprite, ST_NORMAL), x, y, BM_COLOUR_REMAP, sub, real_sprite);
+		GfxMainBlitterViewport(GetSprite(real_sprite, ST_NORMAL), x, y, pal == PALETTE_CRASH ? BM_CRASH_REMAP : BM_COLOUR_REMAP, sub, real_sprite);
 	} else {
 		GfxMainBlitterViewport(GetSprite(real_sprite, ST_NORMAL), x, y, BM_NORMAL, sub, real_sprite);
 	}
@@ -811,7 +811,7 @@ void DrawSprite(SpriteID img, PaletteID 
 		GfxMainBlitter(GetSprite(real_sprite, ST_NORMAL), x, y, BM_TRANSPARENT, sub, real_sprite, zoom);
 	} else if (pal != PAL_NONE) {
 		_colour_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH), ST_RECOLOUR) + 1;
-		GfxMainBlitter(GetSprite(real_sprite, ST_NORMAL), x, y, BM_COLOUR_REMAP, sub, real_sprite, zoom);
+		GfxMainBlitter(GetSprite(real_sprite, ST_NORMAL), x, y, pal == PALETTE_CRASH ? BM_CRASH_REMAP : BM_COLOUR_REMAP, sub, real_sprite, zoom);
 	} else {
 		GfxMainBlitter(GetSprite(real_sprite, ST_NORMAL), x, y, BM_NORMAL, sub, real_sprite, zoom);
 	}