Add support for uncompressed image upload flag to OpenGL1

code/renderergl1/tr_image.c

@@ -557,6 +557,7 @@ static void Upload32( unsigned *data,
 						  qboolean mipmap, 
 						  qboolean picmip, 
 							qboolean lightMap,
+						  qboolean allowCompression,
 						  int *format, 
 						  int *pUploadWidth, int *pUploadHeight )
 {
@@ -692,11 +693,11 @@ static void Upload32( unsigned *data,
 			}
 			else
 			{
-				if ( glConfig.textureCompression == TC_S3TC_ARB )
+				if ( allowCompression && glConfig.textureCompression == TC_S3TC_ARB )
 				{
 					internalFormat = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
 				}
-				else if ( glConfig.textureCompression == TC_S3TC )
+				else if ( allowCompression && glConfig.textureCompression == TC_S3TC )
 				{
 					internalFormat = GL_RGB4_S3TC;
 				}
@@ -892,6 +893,7 @@ image_t *R_CreateImage( const char *name, byte *pic, int width, int height,
 								image->flags & IMGFLAG_MIPMAP,
 								image->flags & IMGFLAG_PICMIP,
 								isLightmap,
+								!(image->flags & IMGFLAG_NO_COMPRESSION),
 								&image->internalFormat,
 								&image->uploadWidth,
 								&image->uploadHeight );