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engines/ultima/ultima8/gfx/texture.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef ULTIMA8_GFX_TEXTURE_H
+#define ULTIMA8_GFX_TEXTURE_H
+
+namespace Ultima {
+namespace Ultima8 {
+
+//
+// Texturing Helper Macros
+//
+
+// 32 Bit Texture bit operations
+#define TEX32_A_SHIFT           24
+#define TEX32_A_MASK            0xFF000000
+#define TEX32_A(col32)          (((col32)&TEX32_A_MASK)>>TEX32_A_SHIFT)
+
+#define TEX32_G_SHIFT           8
+#define TEX32_G_MASK            0x0000FF00
+#define TEX32_G(col32)          (((col32)&TEX32_G_MASK)>>TEX32_G_SHIFT)
+
+#define TEX32_B_SHIFT           16
+#define TEX32_B_MASK            0x00FF0000
+#define TEX32_B(col32)          (((col32)&TEX32_B_MASK)>>TEX32_B_SHIFT)
+
+#define TEX32_R_SHIFT           0
+#define TEX32_R_MASK            0x000000FF
+#define TEX32_R(col32)          (((col32)&TEX32_R_MASK)>>TEX32_R_SHIFT)
+
+#define TEX32_PACK_RGB(r, g, b) (uint32)(((0xFF) << TEX32_A_SHIFT) | ((r) << TEX32_R_SHIFT) | \
+								 ((g) << TEX32_G_SHIFT) | ((b) << TEX32_B_SHIFT))
+
+#define TEX32_PACK_RGBA(r, g, b, a) (uint32)(((a) << TEX32_A_SHIFT) | ((r) << TEX32_R_SHIFT) | \
+									((g) << TEX32_G_SHIFT) | ((b) << TEX32_B_SHIFT))
+
+} // End of namespace Ultima8
+} // End of namespace Ultima
+
+#endif