Vendor raptor source files (was embedded gitlink)

Tree vendored at upstream 0019c5dd; origin + license recorded in
raptor/VENDOR.txt. Windows SDL dev packages excluded via .gitignore.

raptor/src/gfxapi.h

@@ -0,0 +1,125 @@
+#pragma once
+
+#define G3D_DIST 200
+
+#define GFX_DARK  0
+#define GFX_LITE  1
+
+#define SCREENWIDTH  320
+#define SCREENHEIGHT 200
+
+typedef enum
+{
+    UPPER_LEFT,
+    UPPER_RIGHT,
+    LOWER_LEFT,
+    LOWER_RIGHT
+}CORNER;
+
+typedef enum
+{
+    DARK,
+    LIGHT,
+    GREY
+}SHADE;
+
+typedef enum
+{
+    GSPRITE,
+    GPIC
+}GFX_TYPE;
+
+#define CLIP_XRIGHT    2
+#define CLIP_XLEFT     4
+#define CLIP_YTOP      8
+#define CLIP_YBOTTOM   16
+
+typedef struct
+{
+    GFX_TYPE type;          // type of picture
+    int opt1;               // option 1
+    int opt2;               // option 2
+    int width;              // width of pic
+    int height;             // heigth of pic
+}GFX_PIC;
+
+typedef struct
+{
+    int x;                  // X POS OF SEG
+    int y;                  // Y POS OF SEG
+    int offset;             // OFFSET FROM X, Y
+    int length;             // LENGTH OF LINE
+}GFX_SPRITE;
+
+typedef struct
+{
+    int height;
+    short charofs[256];
+    char width[256];
+}FONT;
+
+extern char *displaybuffer;
+extern char *displayscreen;
+extern int ud_x, ud_y, ud_lx, ud_ly;
+extern int o_ud_x, o_ud_y, o_ud_lx, o_ud_ly;
+extern int update_start;
+extern char *gfx_inmem;
+extern int gfx_xp, gfx_yp;
+extern int gfx_lx, gfx_ly;
+extern int gfx_imga;
+extern int framecount;
+extern int tablelen;
+extern int stable[324];
+extern char *ltable, *dtable, *gtable;
+extern int ylookup[200];
+extern int retraceflag;
+extern int G3D_viewx, G3D_viewy, G3D_viewz;
+extern int G3D_x, G3D_y, G3D_z, G3D_screenx, G3D_screeny;
+
+void GFX_UpdateTimer(void);
+
+void GFX_InitSystem(void);
+void GFX_InitVideo(char *curpal);
+int GFX_GetFrameCount(void);
+int GFX_ClipLines(char **image, int *x, int *y, int *lx, int *ly);
+void GFX_SetPalette(char *curpal, int startpal);
+void GFX_FadeOut(int red, int green, int blue, int speed);
+void GFX_FadeIn(char *palette, int steps);
+void GFX_FadeStart(void);
+void GFX_FadeFrame(char *palette, int cur_step, int steps);
+void GFX_SetPalRange(int start, int end);
+void GFX_MakeLightTable(char *palette, char *ltable, int level);
+void GFX_MakeGreyTable(char *palette, char *ltable);
+void GFX_GetScreen(char *outmem, int x, int y, int lx, int ly);
+void GFX_PutTexture(char *intxt, int x, int y, int lx, int ly);
+void GFX_ShadeArea(int opt, int x, int y, int lx, int ly);
+void GFX_ShadeShape(int opt, char* mask, int x, int y);
+void GFX_VShadeLine(int opt, int x, int y, int ly);
+void GFX_HShadeLine(int opt, int x, int y, int lx);
+void GFX_LightBox(int opt, int x, int y, int lx, int ly);
+void GFX_ColorBox(int x, int y, int lx, int ly, int color);
+void GFX_HLine(int x, int y, int lx, int color);
+void GFX_VLine(int x, int y, int ly, int color);
+void GFX_Line(int x, int y, int x2, int y2, int color);
+void GFX_ScalePic(char *buffin, int x, int y, int new_lx, int new_ly, int see_thru);
+void GFX_DisplayUpdate(void);
+void GFX_PutImage(char *image, int x, int y, int see_thru);
+void GFX_PutSprite(char *inmem, int x, int y);
+void GFX_MarkUpdate(int x, int y, int lx, int ly);
+void GFX_ForceUpdate(int x, int y, int lx, int ly);
+void GFX_SetFrameHook(void (*func)(void (*)(void)));
+void GFX_WaitUpdate(int count);
+void GFX_DisplayScreen(void);
+void GFX_DrawSprite(char *dest, char *inmem);
+void GFX_DrawChar(char *dest, char *inmem, int width, int height, int addx, int color);
+void GFX_Shade(char *outmem, int maxlen, char *dtable);
+void GFX_PutPic(void);
+void GFX_PutMaskPic(void);
+int GFX_StrPixelLen(FONT* infont, char *instr, int maxloop);
+int GFX_Print(int printx, int printy, char *str, FONT* infont, int basecolor);
+void GFX_ShadeSprite(char *dest, char *inmem, char *dtable);
+void GFX_ScaleLine(char *outmem, char *inmem);
+void GFX_CScaleLine(char *outmem, char *inmem);
+void GFX_3D_SetView(int x, int y, int z);
+void GFX_3DPoint(void);
+