1 files changed, 122 insertions, 0 deletions
diff --git a/samples/gles2_book/Common/Win32/esUtil_TGA.c b/samples/gles2_book/Common/Win32/esUtil_TGA.c
new file mode 100644
index 00000000..61d1cb14
--- /dev/null
+++ b/samples/gles2_book/Common/Win32/esUtil_TGA.c
@@ -0,0 +1,122 @@
+//
+// Book:      OpenGL(R) ES 2.0 Programming Guide
+// Authors:   Aaftab Munshi, Dan Ginsburg, Dave Shreiner
+// ISBN-10:   0321502795
+// ISBN-13:   9780321502797
+// Publisher: Addison-Wesley Professional
+// URLs:      http://safari.informit.com/9780321563835
+//            http://www.opengles-book.com
+//
+
+// esUtil_TGA.c
+//
+//    This file contains the Win32 implementation of a TGA image loader
+
+#include <windows.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+///
+//  Macros
+//
+#define INVERTED_BIT            (1 << 5)
+
+///
+//  Types
+//
+#pragma pack(push,x1)                            // Byte alignment (8-bit)
+#pragma pack(1)
+
+typedef struct
+{
+   unsigned char  IdSize,
+                  MapType,
+                  ImageType;
+   unsigned short PaletteStart,
+                  PaletteSize;
+   unsigned char  PaletteEntryDepth;
+   unsigned short X,
+                  Y,
+                  Width,
+                  Height;
+   unsigned char  ColorDepth,
+                  Descriptor;
+         
+} TGA_HEADER;
+
+#pragma pack(pop,x1)
+
+////////////////////////////////////////////////////////////////////////////////////
+//
+//  Private Functions
+//
+
+////////////////////////////////////////////////////////////////////////////////////
+//
+//  Public Functions
+//
+//
+
+
+///
+//  WinTGALoad()
+//
+int WinTGALoad( const char *fileName, char **buffer, int *width, int *height )
+{
+   FILE        *fp;
+   TGA_HEADER   Header;
+
+   if ( fopen_s ( &fp, fileName, "rb" ) != 0 )
+   {
+      return FALSE;
+   }
+
+   if ( fp == NULL )
+   {
+      return FALSE;
+   }
+
+   fread ( &Header, sizeof(TGA_HEADER), 1, fp );
+
+   *width = Header.Width;
+   *height = Header.Height;
+   
+   if ( Header.ColorDepth == 24 )
+   {
+      RGBTRIPLE *Buffer24;
+
+      Buffer24= (RGBTRIPLE*)malloc(sizeof(RGBTRIPLE) * (*width) * (*height));
+
+      if(Buffer24)
+      {
+         int i=0;
+         int x,
+             y;
+
+         fread(Buffer24, sizeof(RGBTRIPLE), (*width) * (*height), fp);
+
+         *buffer= (LPSTR) malloc(3 * (*width) * (*height));
+
+         for ( y = 0; y < *height; y++ )
+            for( x = 0; x < *width; x++ )
+            {
+               int Index= y * (*width) + x;
+
+               if(!(Header.Descriptor & INVERTED_BIT))
+                  Index= ((*height) - 1 - y) * (*width) + x;
+
+               (*buffer)[(i * 3)]=      Buffer24[Index].rgbtRed;
+               (*buffer)[(i * 3) + 1]=  Buffer24[Index].rgbtGreen;
+               (*buffer)[(i * 3) + 2]=  Buffer24[Index].rgbtBlue;
+        
+               i++;
+            }
+         
+         fclose(fp);
+         free(Buffer24);
+         return(TRUE);
+      }		
+   }
+
+   return(FALSE);
+}