Initial commit

engines/m4/graphics/rend.h

@@ -0,0 +1,87 @@
+/* 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 M4_GRAPHICS_REND_H
+#define M4_GRAPHICS_REND_H
+
+#include "m4/m4_types.h"
+#include "m4/gui/gui.h"
+
+namespace M4 {
+
+struct RGBcolor {
+	uint8 b, g, r;
+};
+
+struct RendGrBuff {
+	uint32 Width = 0;
+	uint32 Height = 0;
+	void *PixMap = nullptr;
+	byte encoding = 0;
+	uint32 Pitch = 0;
+};
+
+struct DrawRequestX {
+	int32 x;			// X position relative	to GrBuff(0, 0)
+	int32 y;			// Y position relative	to GrBuff(0, 0)
+	int32 scale_x;		// X scale factor (can be negative for reverse draw)
+	int32 scale_y;		// Y scale factor (can't be negative)
+	uint8 *depth_map;	// Depth code array for destination (doesn't care if srcDepth is 0)
+	RGBcolor *Pal;		// Palette for shadow draw (doesn't care if SHADOW bit is not set in Src.encoding)
+	uint8 *ICT;			// Inverse Color Table (doesn't care if SHADOW bit is not set in Src.encoding)
+	uint8 depth;		// Depth code for source (0 if no depth processing)
+};
+
+struct RendCell {
+	uint32 Pack;
+	uint32 Stream;
+	long   hot_x;
+	long   hot_y;
+	uint32 Width;
+	uint32 Height;
+	uint32 Comp;
+	uint32 Reserved[8];
+	uint8 *data;
+};
+
+enum {
+	kEndOfLine = 0,
+	kEndOfSprite = 1,
+	kJumpXY = 2
+};
+
+typedef uint32 RenderResult;
+
+typedef RenderResult(*RenderFunc)();
+
+struct Rend_Globals {
+	uint8 *_sourceAddress, *_destinationAddress, *_depthAddress, _spriteDepth, *_InverseColorTable;
+	int32 _X_scale, _LeftPorch, _RightPorch, _StartingPixelPos, _X_error;
+	int _Increment;
+	RGBcolor *_Palette;
+};
+
+void GetUpdateRectangle(int32 x, int32 y, int32 hot_x, int32 hot_y, int32 scale_x, int32 scale_y, int32 Width, int32 Height, M4Rect *UpdateRect);
+void render_sprite_to_8BBM(RendGrBuff *Destination, DrawRequestX *dr, RendCell *Frame, M4Rect *ClipRectangle, M4Rect *UpdateRect);
+
+} // namespace M4
+
+#endif