Function R_ParseImageProgram_r

neo/renderer/Image_program.cpp:371–604

=================== R_ParseImageProgram_r If pic is NULL, the timestamps will be filled in, but no image will be generated If both pic and timestamps are NULL, it will just advance past it, which can be used to parse an image program from a text stream. =================== */

===================
*/
static bool R_ParseImageProgram_r( idLexer &src, byte **pic, int *width, int *height,
								  ID_TIME_T *timestamps, textureDepth_t *depth ) {
	idToken		token;
	float		scale;
	ID_TIME_T		timestamp;

	src.ReadToken( &token );
	AppendToken( token );

	if ( !token.Icmp( "heightmap" ) ) {
		MatchAndAppendToken( src, "(" );

		if ( !R_ParseImageProgram_r( src, pic, width, height, timestamps, depth ) ) {
			return false;
		}

		MatchAndAppendToken( src, "," );

		src.ReadToken( &token );
		AppendToken( token );
		scale = token.GetFloatValue();

		// process it
		if ( pic ) {
			R_HeightmapToNormalMap( *pic, *width, *height, scale );
			if ( depth ) {
				*depth = TD_BUMP;
			}
		}

		MatchAndAppendToken( src, ")" );
		return true;
	}

	if ( !token.Icmp( "addnormals" ) ) {
		byte	*pic2 = NULL;
		int		width2, height2;

		MatchAndAppendToken( src, "(" );

		if ( !R_ParseImageProgram_r( src, pic, width, height, timestamps, depth ) ) {
			return false;
		}

		MatchAndAppendToken( src, "," );

		if ( !R_ParseImageProgram_r( src, pic ? &pic2 : NULL, &width2, &height2, timestamps, depth ) ) {
			if ( pic ) {
				R_StaticFree( *pic );
				*pic = NULL;
			}
			return false;
		}

		// process it
		if ( pic ) {
			R_AddNormalMaps( *pic, *width, *height, pic2, width2, height2 );
			R_StaticFree( pic2 );