From 6ecc460b419690ba8bef8bbc3deb5af3f6c7bbc6 Mon Sep 17 00:00:00 2001
From: Alyssa Milburn
Date: Thu, 14 Apr 2011 21:06:06 +0200
Subject: SWORD25: Fix rendering on big-endian.

---
 engines/sword25/gfx/image/renderedimage.cpp       | 48 +++++++++++++++++++++--
 engines/sword25/gfx/image/vectorimagerenderer.cpp | 11 ++++++
 2 files changed, 55 insertions(+), 4 deletions(-)

(limited to 'engines/sword25/gfx/image')

diff --git a/engines/sword25/gfx/image/renderedimage.cpp b/engines/sword25/gfx/image/renderedimage.cpp
index ced3296e57..1cc5d50e90 100644
--- a/engines/sword25/gfx/image/renderedimage.cpp
+++ b/engines/sword25/gfx/image/renderedimage.cpp
@@ -267,10 +267,11 @@ bool RenderedImage::blit(int posX, int posY, int flipping, Common::Rect *pPartRe
 			out = outo;
 			in = ino;
 			for (int j = 0; j < img->w; j++) {
-				int b = in[0];
-				int g = in[1];
-				int r = in[2];
-				int a = in[3];
+				uint32 pix = *(uint32*)in;
+				int b = (pix >> 0) & 0xff;
+				int g = (pix >> 8) & 0xff;
+				int r = (pix >> 16) & 0xff;
+				int a = (pix >> 24) & 0xff;
 				in += inStep;
 
 				if (ca != 255) {
@@ -282,6 +283,7 @@ bool RenderedImage::blit(int posX, int posY, int flipping, Common::Rect *pPartRe
 					out += 4;
 					break;
 				case 255: // Full opacity
+#if defined(SCUMM_LITTLE_ENDIAN)
 					if (cb != 255)
 						*out++ = (b * cb) >> 8;
 					else
@@ -298,9 +300,28 @@ bool RenderedImage::blit(int posX, int posY, int flipping, Common::Rect *pPartRe
 						*out++ = r;
 
 					*out++ = a;
+#else
+					*out++ = a;
+
+					if (cr != 255)
+						*out++ = (r * cr) >> 8;
+					else
+						*out++ = r;
+
+					if (cg != 255)
+						*out++ = (g * cg) >> 8;
+					else
+						*out++ = g;
+
+					if (cb != 255)
+						*out++ = (b * cb) >> 8;
+					else
+						*out++ = b;
+#endif
 					break;
 
 				default: // alpha blending
+#if defined(SCUMM_LITTLE_ENDIAN)
 					if (cb != 255)
 						*out += ((b - *out) * a * cb) >> 16;
 					else
@@ -318,6 +339,25 @@ bool RenderedImage::blit(int posX, int posY, int flipping, Common::Rect *pPartRe
 					out++;
 					*out = 255;
 					out++;
+#else
+					*out = 255;
+					out++;
+					if (cr != 255)
+						*out += ((r - *out) * a * cr) >> 16;
+					else
+						*out += ((r - *out) * a) >> 8;
+					out++;
+					if (cg != 255)
+						*out += ((g - *out) * a * cg) >> 16;
+					else
+						*out += ((g - *out) * a) >> 8;
+					out++;
+					if (cb != 255)
+						*out += ((b - *out) * a * cb) >> 16;
+					else
+						*out += ((b - *out) * a) >> 8;
+					out++;
+#endif
 				}
 			}
 			outo += _backSurface->pitch;
diff --git a/engines/sword25/gfx/image/vectorimagerenderer.cpp b/engines/sword25/gfx/image/vectorimagerenderer.cpp
index e8acd08909..99a47015fb 100644
--- a/engines/sword25/gfx/image/vectorimagerenderer.cpp
+++ b/engines/sword25/gfx/image/vectorimagerenderer.cpp
@@ -67,6 +67,7 @@ void art_rgb_run_alpha1(byte *buf, byte r, byte g, byte b, int alpha, int n) {
 	int v;
 
 	for (i = 0; i < n; i++) {
+#if defined(SCUMM_LITTLE_ENDIAN)
 		v = *buf;
 		*buf++ = v + (((b - v) * alpha + 0x80) >> 8);
 		v = *buf;
@@ -75,6 +76,16 @@ void art_rgb_run_alpha1(byte *buf, byte r, byte g, byte b, int alpha, int n) {
 		*buf++ = v + (((r - v) * alpha + 0x80) >> 8);
 		v = *buf;
 		*buf++ = MIN(v + alpha, 0xff);
+#else
+		v = *buf;
+		*buf++ = MIN(v + alpha, 0xff);
+		v = *buf;
+		*buf++ = v + (((r - v) * alpha + 0x80) >> 8);
+		v = *buf;
+		*buf++ = v + (((g - v) * alpha + 0x80) >> 8);
+		v = *buf;
+		*buf++ = v + (((b - v) * alpha + 0x80) >> 8);
+#endif
 	}
 }
 
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