raze-gles/source/common/2d/drawparms.h

#pragma once
/*
** v_video.h
**
**---------------------------------------------------------------------------
** Copyright 1998-2008 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
**    notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
**    notice, this list of conditions and the following disclaimer in the
**    documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
**    derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/


#include "palentry.h"
#include "renderstyle.h"
#include "c_cvars.h"
#include "v_2ddrawer.h"

#define TAG_DONE	(0)  /* Used to indicate the end of the Tag list */
#define TAG_END		(0)  /* Ditto									*/
						 /* list pointed to in ti_Data 				*/

enum
{
	DTA_Base = 1,
	DTA_DestWidth,		// width of area to draw to
	DTA_DestHeight,		// height of area to draw to
	DTA_Alpha,			// alpha value for translucency
	DTA_FillColor,		// color to stencil onto the destination
	DTA_TranslationIndex, // translation table to recolor the source
	DTA_AlphaChannel,	// bool: the source is an alpha channel; used with DTA_FillColor
	DTA_Clean,			// bool: scale texture size and position by CleanXfac and CleanYfac
	DTA_320x200,		// bool: scale texture size and position to fit on a virtual 320x200 screen
	DTA_Bottom320x200,	// bool: same as DTA_320x200 but centers virtual screen on bottom for 1280x1024 targets
	DTA_CleanNoMove,	// bool: like DTA_Clean but does not reposition output position
	DTA_CleanNoMove_1,	// bool: like DTA_CleanNoMove, but uses Clean[XY]fac_1 instead
	DTA_FlipX,			// bool: flip image horizontally	//FIXME: Does not work with DTA_Window(Left|Right)
	DTA_ShadowColor,	// color of shadow
	DTA_ShadowAlpha,	// alpha of shadow
	DTA_Shadow,			// set shadow color and alphas to defaults
	DTA_VirtualWidth,	// pretend the canvas is this wide
	DTA_VirtualHeight,	// pretend the canvas is this tall
	DTA_TopOffset,		// override texture's top offset
	DTA_LeftOffset,		// override texture's left offset
	DTA_CenterOffset,	// bool: override texture's left and top offsets and set them for the texture's middle
	DTA_CenterBottomOffset,// bool: override texture's left and top offsets and set them for the texture's bottom middle
	DTA_WindowLeft,		// don't draw anything left of this column (on source, not dest)
	DTA_WindowRight,	// don't draw anything at or to the right of this column (on source, not dest)
	DTA_ClipTop,		// don't draw anything above this row (on dest, not source)
	DTA_ClipBottom,		// don't draw anything at or below this row (on dest, not source)
	DTA_ClipLeft,		// don't draw anything to the left of this column (on dest, not source)
	DTA_ClipRight,		// don't draw anything at or to the right of this column (on dest, not source)
	DTA_Masked,			// true(default)=use masks from texture, false=ignore masks
	DTA_HUDRules,		// use fullscreen HUD rules to position and size textures
	DTA_HUDRulesC,		// only used internally for marking HUD_HorizCenter
	DTA_KeepRatio,		// doesn't adjust screen size for DTA_Virtual* if the aspect ratio is not 4:3
	DTA_RenderStyle,	// same as render style for actors
	DTA_ColorOverlay,	// uint32_t: ARGB to overlay on top of image; limited to black for software
	DTA_BilinearFilter,	// bool: apply bilinear filtering to the image
	DTA_SpecialColormap,// pointer to FSpecialColormapParameters
	DTA_Desaturate,		// explicit desaturation factor (does not do anything in Legacy OpenGL)
	DTA_Fullscreen,		// Draw image fullscreen (same as DTA_VirtualWidth/Height with graphics size.)

	// floating point duplicates of some of the above:
	DTA_DestWidthF,
	DTA_DestHeightF,
	DTA_TopOffsetF,
	DTA_LeftOffsetF,
	DTA_VirtualWidthF,
	DTA_VirtualHeightF,
	DTA_WindowLeftF,
	DTA_WindowRightF,

	// For DrawText calls:
	DTA_TextLen,		// stop after this many characters, even if \0 not hit
	DTA_CellX,			// horizontal size of character cell
	DTA_CellY,			// vertical size of character cell

	// New additions. 
	DTA_Color,
	DTA_FlipY,			// bool: flip image vertically
	DTA_SrcX,			// specify a source rectangle (this supersedes the poorly implemented DTA_WindowLeft/Right
	DTA_SrcY,
	DTA_SrcWidth,
	DTA_SrcHeight,
	DTA_LegacyRenderStyle,	// takes an old-style STYLE_* constant instead of an FRenderStyle
	DTA_Burn,				// activates the burn shader for this element
	DTA_Spacing,			// Strings only: Additional spacing between characters
	DTA_Monospace,			// Fonts only: Use a fixed distance between characters.
};

enum EMonospacing : int
{
	Off = 0,
	CellLeft = 1,
	CellCenter = 2,
	CellRight = 3
};

enum
{
	HUD_Normal,
	HUD_HorizCenter
};


class FFont;

struct DrawParms
{
	double x, y;
	double texwidth;
	double texheight;
	double destwidth;
	double destheight;
	double virtWidth;
	double virtHeight;
	double windowleft;
	double windowright;
	int cleanmode;
	int dclip;
	int uclip;
	int lclip;
	int rclip;
	double top;
	double left;
	float Alpha;
	int remap;
	PalEntry fillcolor;
	PalEntry colorOverlay;
	PalEntry color;
	int alphaChannel;
	int flipX;
	int flipY;
	//float shadowAlpha;
	int shadowColor;
	int keepratio;
	int masked;
	int bilinear;
	FRenderStyle style;
	int desaturate;
	int scalex, scaley;
	int cellx, celly;
	int monospace;
	int spacing;
	int maxstrlen;
	bool fortext;
	bool virtBottom;
	double srcx, srcy;
	double srcwidth, srcheight;
	bool burn;
};

struct Va_List
{
	va_list list;
};

int CheckRatio (int width, int height, int *trueratio=NULL);
static inline int CheckRatio (double width, double height) { return CheckRatio(int(width), int(height)); }
inline bool IsRatioWidescreen(int ratio) { return (ratio & 3) != 0; }

float ActiveRatio (int width, int height, float *trueratio = NULL);
static inline double ActiveRatio (double width, double height) { return ActiveRatio(int(width), int(height)); }

int AspectBaseWidth(float aspect);
int AspectBaseHeight(float aspect);
double AspectPspriteOffset(float aspect);
int AspectMultiplier(float aspect);
bool AspectTallerThanWide(float aspect);
void ScaleWithAspect(int &w, int &h, int Width, int Height);

int GetUIScale(int altval);
int GetConScale(int altval);