From ea67fa406f198657181d61e453ff15f78293a4c6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Branimir=20Karad=C5=BEi=C4=87?= <branimirkaradzic@gmail.com>
Date: Thu, 19 May 2016 15:04:20 -0700
Subject: [PATCH] Fixed PTC14A decoding. Issue #792.

---
 src/image.cpp | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/image.cpp b/src/image.cpp
index 96923f0be..8a93cee7d 100644
--- a/src/image.cpp
+++ b/src/image.cpp
@@ -2112,7 +2112,7 @@ namespace bgfx
 
 		{ 8, 0, 8, 0 },
 		{ 4, 4, 4, 4 },
-		{ 4, 4, 0, 0 },
+		{ 4, 4, 4, 4 },
 		{ 0, 8, 0, 8 },
 	};
 
@@ -2247,7 +2247,7 @@ namespace bgfx
 			*_r += bitRangeConvert( (_block >> 10) & 0x1f, 5, 8) * _factor;
 			*_g += bitRangeConvert( (_block >>  5) & 0x1f, 5, 8) * _factor;
 			*_b += bitRangeConvert( (_block >>  1) & 0x0f, 4, 8) * _factor;
-			*_a += 255;
+			*_a += 255 * _factor;
 		}
 		else
 		{
@@ -2265,7 +2265,7 @@ namespace bgfx
 			*_r += bitRangeConvert( (_block >> 26) & 0x1f, 5, 8) * _factor;
 			*_g += bitRangeConvert( (_block >> 21) & 0x1f, 5, 8) * _factor;
 			*_b += bitRangeConvert( (_block >> 16) & 0x1f, 5, 8) * _factor;
-			*_a += 255;
+			*_a += 255 * _factor;
 		}
 		else
 		{
@@ -3191,7 +3191,7 @@ namespace bgfx
 		_imageContainer.m_height   = height;
 		_imageContainer.m_depth    = depth;
 		_imageContainer.m_format   = format;
-		_imageContainer.m_numMips  = uint8_t(numMips);
+		_imageContainer.m_numMips  = uint8_t(bx::uint32_max(numMips, 1) );
 		_imageContainer.m_hasAlpha = hasAlpha;
 		_imageContainer.m_cubeMap  = numFaces > 1;
 		_imageContainer.m_ktx      = false;
@@ -3248,6 +3248,7 @@ namespace bgfx
 			return true;
 		}
 
+		BX_TRACE("Unrecognized image format (magic: 0x%08x)!", magic);
 		return false;
 	}