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gzdoom-gles/src/v_draw.cpp

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/*
** v_draw.cpp
** Draw patches and blocks to a canvas
**
**---------------------------------------------------------------------------
** 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.
**---------------------------------------------------------------------------
**
*/
// #define NO_SWRENDER // set this if you want to exclude the software renderer. Without the software renderer software canvas drawing does nothing.
#include <stdio.h>
#include <stdarg.h>
#include "doomtype.h"
#include "v_video.h"
#include "m_swap.h"
#include "r_defs.h"
#include "r_utility.h"
#include "r_renderer.h"
#ifndef NO_SWRENDER
#include "swrenderer/r_swcanvas.h"
#endif
#include "r_data/r_translate.h"
#include "doomstat.h"
#include "v_palette.h"
#include "gi.h"
#include "g_level.h"
#include "st_stuff.h"
#include "sbar.h"
#include "i_system.h"
#include "i_video.h"
#include "templates.h"
#include "d_net.h"
#include "colormatcher.h"
#include "r_data/colormaps.h"
#include "g_levellocals.h"
#include "textures.h"
#include "vm.h"
CUSTOM_CVAR(Int, uiscale, 0, CVAR_ARCHIVE | CVAR_NOINITCALL)
{
if (self < 0)
{
self = 0;
return;
}
if (StatusBar != NULL)
{
StatusBar->CallScreenSizeChanged();
}
setsizeneeded = true;
}
int GetUIScale(int altval)
{
int scaleval;
if (altval > 0) scaleval = altval;
else if (uiscale == 0)
{
// Default should try to scale to 640x400
int vscale = screen->GetHeight() / 400;
int hscale = screen->GetWidth() / 640;
scaleval = clamp(vscale, 1, hscale);
}
else scaleval = uiscale;
// block scales that result in something larger than the current screen.
int vmax = screen->GetHeight() / 200;
int hmax = screen->GetWidth() / 320;
int max = MAX(vmax, hmax);
return MAX(1,MIN(scaleval, max));
}
// [RH] Stretch values to make a 320x200 image best fit the screen
// without using fractional steppings
int CleanXfac, CleanYfac;
// [RH] Effective screen sizes that the above scale values give you
int CleanWidth, CleanHeight;
// Above minus 1 (or 1, if they are already 1)
int CleanXfac_1, CleanYfac_1, CleanWidth_1, CleanHeight_1;
DEFINE_ACTION_FUNCTION(_Screen, GetWidth)
{
PARAM_PROLOGUE;
ACTION_RETURN_INT(screen->GetWidth());
}
DEFINE_ACTION_FUNCTION(_Screen, GetHeight)
{
PARAM_PROLOGUE;
ACTION_RETURN_INT(screen->GetHeight());
}
DEFINE_ACTION_FUNCTION(_Screen, PaletteColor)
{
PARAM_PROLOGUE;
PARAM_INT(index);
if (index < 0 || index > 255) index = 0;
else index = GPalette.BaseColors[index];
ACTION_RETURN_INT(index);
}
// Dummy ZScript arbitrary textured shape drawing
IMPLEMENT_CLASS(DShape2D, false, false)
DEFINE_ACTION_FUNCTION(DShape2D, Clear)
{
PARAM_SELF_PROLOGUE(DShape2D);
PARAM_INT_DEF(which);
return 0;
}
DEFINE_ACTION_FUNCTION(DShape2D, PushVertex)
{
PARAM_SELF_PROLOGUE(DShape2D);
PARAM_FLOAT(x);
PARAM_FLOAT(y);
return 0;
}
DEFINE_ACTION_FUNCTION(DShape2D, PushCoord)
{
PARAM_SELF_PROLOGUE(DShape2D);
PARAM_FLOAT(u);
PARAM_FLOAT(v);
return 0;
}
DEFINE_ACTION_FUNCTION(DShape2D, PushTriangle)
{
PARAM_SELF_PROLOGUE(DShape2D);
PARAM_INT(a);
PARAM_INT(b);
PARAM_INT(c);
return 0;
}
void DCanvas::DrawTexture (FTexture *img, double x, double y, int tags_first, ...)
{
Va_List tags;
va_start(tags.list, tags_first);
DrawParms parms;
bool res = ParseDrawTextureTags(img, x, y, tags_first, tags, &parms, false);
va_end(tags.list);
if (!res)
{
return;
}
DrawTextureParms(img, parms);
}
int ListGetInt(VMVa_List &tags);
void DCanvas::DrawTexture(FTexture *img, double x, double y, VMVa_List &args)
{
DrawParms parms;
uint32_t tag = ListGetInt(args);
bool res = ParseDrawTextureTags(img, x, y, tag, args, &parms, false);
if (!res) return;
DrawTextureParms(img, parms);
}
DEFINE_ACTION_FUNCTION(_Screen, DrawTexture)
{
PARAM_PROLOGUE;
PARAM_INT(texid);
PARAM_BOOL(animate);
PARAM_FLOAT(x);
PARAM_FLOAT(y);
if (!screen->HasBegun2D()) ThrowAbortException(X_OTHER, "Attempt to draw to screen outside a draw function");
FTexture *tex = animate ? TexMan(FSetTextureID(texid)) : TexMan[FSetTextureID(texid)];
VMVa_List args = { param + 4, 0, numparam - 4 };
screen->DrawTexture(tex, x, y, args);
return 0;
}
void DCanvas::DrawTextureParms(FTexture *img, DrawParms &parms)
{
#ifndef NO_SWRENDER
SWCanvas::DrawTexture(this, img, parms);
#endif
if (ticdup != 0 && menuactive == MENU_Off)
{
NetUpdate();
}
}
//==========================================================================
//
// Dummy ZScript arbitrary textured shape drawing functions
//
//==========================================================================
void DCanvas::DrawShape(FTexture *img, DShape2D *shape, int tags_first, ...)
{
}
void DCanvas::DrawShape(FTexture *img, DShape2D *shape, VMVa_List &args)
{
}
DEFINE_ACTION_FUNCTION(_Screen, DrawShape)
{
PARAM_PROLOGUE;
PARAM_INT(texid);
PARAM_BOOL(animate);
PARAM_POINTER(shape, DShape2D);
return 0;
}
//==========================================================================
//
// Clipping rect
//
//==========================================================================
void DCanvas::SetClipRect(int x, int y, int w, int h)
{
clipleft = clamp(x, 0, GetWidth());
clipwidth = clamp(w, -1, GetWidth() - x);
cliptop = clamp(y, 0, GetHeight());
clipheight = clamp(h, -1, GetHeight() - y);
}
DEFINE_ACTION_FUNCTION(_Screen, SetClipRect)
{
PARAM_PROLOGUE;
PARAM_INT(x);
PARAM_INT(y);
PARAM_INT(w);
PARAM_INT(h);
screen->SetClipRect(x, y, w, h);
return 0;
}
DEFINE_ACTION_FUNCTION(_Screen, ClearClipRect)
{
PARAM_PROLOGUE;
screen->ClearClipRect();
return 0;
}
void DCanvas::GetClipRect(int *x, int *y, int *w, int *h)
{
if (x) *x = clipleft;
if (y) *y = cliptop;
if (w) *w = clipwidth;
if (h) *h = clipheight;
}
DEFINE_ACTION_FUNCTION(_Screen, GetClipRect)
{
PARAM_PROLOGUE;
int x, y, w, h;
screen->GetClipRect(&x, &y, &w, &h);
if (numret > 0) ret[0].SetInt(x);
if (numret > 1) ret[1].SetInt(y);
if (numret > 2) ret[2].SetInt(w);
if (numret > 3) ret[3].SetInt(h);
return MIN(numret, 4);
}
DEFINE_ACTION_FUNCTION(_Screen, GetViewWindow)
{
PARAM_PROLOGUE;
if (numret > 0) ret[0].SetInt(viewwindowx);
if (numret > 1) ret[1].SetInt(viewwindowy);
if (numret > 2) ret[2].SetInt(viewwidth);
if (numret > 3) ret[3].SetInt(viewheight);
return MIN(numret, 4);
}
bool DCanvas::SetTextureParms(DrawParms *parms, FTexture *img, double xx, double yy) const
{
if (img != NULL)
{
parms->x = xx;
parms->y = yy;
parms->texwidth = img->GetScaledWidthDouble();
parms->texheight = img->GetScaledHeightDouble();
if (parms->top == INT_MAX || parms->fortext)
{
parms->top = img->GetScaledTopOffset();
}
if (parms->left == INT_MAX || parms->fortext)
{
parms->left = img->GetScaledLeftOffset();
}
if (parms->destwidth == INT_MAX || parms->fortext)
{
parms->destwidth = img->GetScaledWidthDouble();
}
if (parms->destheight == INT_MAX || parms->fortext)
{
parms->destheight = img->GetScaledHeightDouble();
}
switch (parms->cleanmode)
{
default:
break;
case DTA_Clean:
parms->x = (parms->x - 160.0) * CleanXfac + (Width * 0.5);
parms->y = (parms->y - 100.0) * CleanYfac + (Height * 0.5);
parms->destwidth = parms->texwidth * CleanXfac;
parms->destheight = parms->texheight * CleanYfac;
break;
case DTA_CleanNoMove:
parms->destwidth = parms->texwidth * CleanXfac;
parms->destheight = parms->texheight * CleanYfac;
break;
case DTA_CleanNoMove_1:
parms->destwidth = parms->texwidth * CleanXfac_1;
parms->destheight = parms->texheight * CleanYfac_1;
break;
case DTA_Fullscreen:
parms->x = parms->y = 0;
break;
case DTA_HUDRules:
case DTA_HUDRulesC:
{
// Note that this has been deprecated because the HUD should be drawn by the status bar.
bool xright = parms->x < 0;
bool ybot = parms->y < 0;
DVector2 scale = StatusBar->GetHUDScale();
parms->x *= scale.X;
if (parms->cleanmode == DTA_HUDRulesC)
parms->x += Width * 0.5;
else if (xright)
parms->x = Width + parms->x;
parms->y *= scale.Y;
if (ybot)
parms->y = Height + parms->y;
parms->destwidth = parms->texwidth * scale.X;
parms->destheight = parms->texheight * scale.Y;
break;
}
}
if (parms->virtWidth != Width || parms->virtHeight != Height)
{
VirtualToRealCoords(parms->x, parms->y, parms->destwidth, parms->destheight,
parms->virtWidth, parms->virtHeight, parms->virtBottom, !parms->keepratio);
}
}
return false;
}
static void ListEnd(Va_List &tags)
{
va_end(tags.list);
}
static int ListGetInt(Va_List &tags)
{
return va_arg(tags.list, int);
}
static inline double ListGetDouble(Va_List &tags)
{
return va_arg(tags.list, double);
}
// These two options are only being used by the D3D version of the HUD weapon drawer, they serve no purpose anywhere else.
static inline FSpecialColormap * ListGetSpecialColormap(Va_List &tags)
{
return va_arg(tags.list, FSpecialColormap *);
}
static inline FColormapStyle * ListGetColormapStyle(Va_List &tags)
{
return va_arg(tags.list, FColormapStyle *);
}
static void ListEnd(VMVa_List &tags)
{
}
int ListGetInt(VMVa_List &tags)
{
if (tags.curindex < tags.numargs)
{
if (tags.args[tags.curindex].Type == REGT_INT)
{
return tags.args[tags.curindex++].i;
}
ThrowAbortException(X_OTHER, "Invalid parameter in draw function, int expected");
}
return TAG_DONE;
}
static inline double ListGetDouble(VMVa_List &tags)
{
if (tags.curindex < tags.numargs && tags.args[tags.curindex].Type == REGT_FLOAT)
{
return tags.args[tags.curindex++].f;
}
ThrowAbortException(X_OTHER, "Invalid parameter in draw function, float expected");
return 0;
}
static inline FSpecialColormap * ListGetSpecialColormap(VMVa_List &tags)
{
ThrowAbortException(X_OTHER, "Invalid tag in draw function");
return nullptr;
}
static inline FColormapStyle * ListGetColormapStyle(VMVa_List &tags)
{
ThrowAbortException(X_OTHER, "Invalid tag in draw function");
return nullptr;
}
template<class T>
bool DCanvas::ParseDrawTextureTags(FTexture *img, double x, double y, uint32_t tag, T& tags, DrawParms *parms, bool fortext) const
{
INTBOOL boolval;
int intval;
bool translationset = false;
bool fillcolorset = false;
if (!fortext)
{
if (img == NULL || img->UseType == ETextureType::Null)
{
ListEnd(tags);
return false;
}
}
// Do some sanity checks on the coordinates.
if (x < -16383 || x > 16383 || y < -16383 || y > 16383)
{
ListEnd(tags);
return false;
}
parms->fortext = fortext;
parms->windowleft = 0;
parms->windowright = INT_MAX;
parms->dclip = this->GetHeight();
parms->uclip = 0;
parms->lclip = 0;
parms->rclip = this->GetWidth();
parms->left = INT_MAX;
parms->top = INT_MAX;
parms->destwidth = INT_MAX;
parms->destheight = INT_MAX;
parms->Alpha = 1.f;
parms->fillcolor = -1;
parms->remap = NULL;
parms->colorOverlay = 0;
parms->alphaChannel = false;
parms->flipX = false;
parms->color = 0xffffffff;
//parms->shadowAlpha = 0;
parms->shadowColor = 0;
parms->virtWidth = this->GetWidth();
parms->virtHeight = this->GetHeight();
parms->keepratio = false;
parms->style.BlendOp = 255; // Dummy "not set" value
parms->masked = true;
parms->bilinear = false;
parms->specialcolormap = NULL;
parms->colormapstyle = NULL;
parms->cleanmode = DTA_Base;
parms->scalex = parms->scaley = 1;
parms->cellx = parms->celly = 0;
parms->maxstrlen = INT_MAX;
parms->virtBottom = false;
// Parse the tag list for attributes. (For floating point attributes,
// consider that the C ABI dictates that all floats be promoted to
// doubles when passed as function arguments.)
while (tag != TAG_DONE)
{
switch (tag)
{
default:
ListGetInt(tags);
break;
case DTA_DestWidth:
assert(fortext == false);
if (fortext) return false;
parms->cleanmode = DTA_Base;
parms->destwidth = ListGetInt(tags);
break;
case DTA_DestWidthF:
assert(fortext == false);
if (fortext) return false;
parms->cleanmode = DTA_Base;
parms->destwidth = ListGetDouble(tags);
break;
case DTA_DestHeight:
assert(fortext == false);
if (fortext) return false;
parms->cleanmode = DTA_Base;
parms->destheight = ListGetInt(tags);
break;
case DTA_DestHeightF:
assert(fortext == false);
if (fortext) return false;
parms->cleanmode = DTA_Base;
parms->destheight = ListGetDouble(tags);
break;
case DTA_Clean:
boolval = ListGetInt(tags);
if (boolval)
{
parms->scalex = 1;
parms->scaley = 1;
parms->cleanmode = tag;
}
break;
case DTA_CleanNoMove:
boolval = ListGetInt(tags);
if (boolval)
{
parms->scalex = CleanXfac;
parms->scaley = CleanYfac;
parms->cleanmode = tag;
}
break;
case DTA_CleanNoMove_1:
boolval = ListGetInt(tags);
if (boolval)
{
parms->scalex = CleanXfac_1;
parms->scaley = CleanYfac_1;
parms->cleanmode = tag;
}
break;
case DTA_320x200:
boolval = ListGetInt(tags);
if (boolval)
{
parms->cleanmode = DTA_Base;
parms->scalex = 1;
parms->scaley = 1;
parms->virtWidth = 320;
parms->virtHeight = 200;
}
break;
case DTA_Bottom320x200:
boolval = ListGetInt(tags);
if (boolval)
{
parms->cleanmode = DTA_Base;
parms->scalex = 1;
parms->scaley = 1;
parms->virtWidth = 320;
parms->virtHeight = 200;
}
parms->virtBottom = true;
break;
case DTA_HUDRules:
intval = ListGetInt(tags);
parms->cleanmode = intval == HUD_HorizCenter ? DTA_HUDRulesC : DTA_HUDRules;
break;
case DTA_VirtualWidth:
parms->cleanmode = DTA_Base;
parms->virtWidth = ListGetInt(tags);
break;
case DTA_VirtualWidthF:
parms->cleanmode = DTA_Base;
parms->virtWidth = ListGetDouble(tags);
break;
case DTA_VirtualHeight:
parms->cleanmode = DTA_Base;
parms->virtHeight = ListGetInt(tags);
break;
case DTA_VirtualHeightF:
parms->cleanmode = DTA_Base;
parms->virtHeight = ListGetDouble(tags);
break;
case DTA_Fullscreen:
boolval = ListGetInt(tags);
if (boolval)
{
assert(fortext == false);
if (img == NULL) return false;
parms->cleanmode = DTA_Fullscreen;
parms->virtWidth = img->GetScaledWidthDouble();
parms->virtHeight = img->GetScaledHeightDouble();
}
break;
case DTA_Alpha:
parms->Alpha = (float)(MIN<double>(1., ListGetDouble(tags)));
break;
case DTA_AlphaChannel:
parms->alphaChannel = ListGetInt(tags);
break;
case DTA_FillColor:
parms->fillcolor = ListGetInt(tags);
if (parms->fillcolor != ~0u)
{
fillcolorset = true;
}
else if (parms->fillcolor != 0)
{
// The crosshair is the only thing which uses a non-black fill color.
parms->fillcolor = PalEntry(ColorMatcher.Pick(parms->fillcolor), RPART(parms->fillcolor), GPART(parms->fillcolor), BPART(parms->fillcolor));
}
break;
case DTA_TranslationIndex:
parms->remap = TranslationToTable(ListGetInt(tags));
break;
case DTA_ColorOverlay:
parms->colorOverlay = ListGetInt(tags);
break;
case DTA_Color:
parms->color = ListGetInt(tags);
break;
case DTA_FlipX:
parms->flipX = ListGetInt(tags);
break;
case DTA_TopOffset:
assert(fortext == false);
if (fortext) return false;
parms->top = ListGetInt(tags);
break;
case DTA_TopOffsetF:
assert(fortext == false);
if (fortext) return false;
parms->top = ListGetDouble(tags);
break;
case DTA_LeftOffset:
assert(fortext == false);
if (fortext) return false;
parms->left = ListGetInt(tags);
break;
case DTA_LeftOffsetF:
assert(fortext == false);
if (fortext) return false;
parms->left = ListGetDouble(tags);
break;
case DTA_CenterOffset:
assert(fortext == false);
if (fortext) return false;
if (ListGetInt(tags))
{
parms->left = img->GetScaledWidthDouble() * 0.5;
parms->top = img->GetScaledHeightDouble() * 0.5;
}
break;
case DTA_CenterBottomOffset:
assert(fortext == false);
if (fortext) return false;
if (ListGetInt(tags))
{
parms->left = img->GetScaledWidthDouble() * 0.5;
parms->top = img->GetScaledHeightDouble();
}
break;
case DTA_WindowLeft:
assert(fortext == false);
if (fortext) return false;
parms->windowleft = ListGetInt(tags);
break;
case DTA_WindowLeftF:
assert(fortext == false);
if (fortext) return false;
parms->windowleft = ListGetDouble(tags);
break;
case DTA_WindowRight:
assert(fortext == false);
if (fortext) return false;
parms->windowright = ListGetInt(tags);
break;
case DTA_WindowRightF:
assert(fortext == false);
if (fortext) return false;
parms->windowright = ListGetDouble(tags);
break;
case DTA_ClipTop:
parms->uclip = ListGetInt(tags);
if (parms->uclip < 0)
{
parms->uclip = 0;
}
break;
case DTA_ClipBottom:
parms->dclip = ListGetInt(tags);
if (parms->dclip > this->GetHeight())
{
parms->dclip = this->GetHeight();
}
break;
case DTA_ClipLeft:
parms->lclip = ListGetInt(tags);
if (parms->lclip < 0)
{
parms->lclip = 0;
}
break;
case DTA_ClipRight:
parms->rclip = ListGetInt(tags);
if (parms->rclip > this->GetWidth())
{
parms->rclip = this->GetWidth();
}
break;
case DTA_ShadowAlpha:
//parms->shadowAlpha = (float)MIN(1., ListGetDouble(tags));
break;
case DTA_ShadowColor:
parms->shadowColor = ListGetInt(tags);
break;
case DTA_Shadow:
boolval = ListGetInt(tags);
if (boolval)
{
//parms->shadowAlpha = 0.5;
parms->shadowColor = 0;
}
else
{
//parms->shadowAlpha = 0;
}
break;
case DTA_Masked:
parms->masked = ListGetInt(tags);
break;
case DTA_BilinearFilter:
parms->bilinear = ListGetInt(tags);
break;
case DTA_KeepRatio:
// I think this is a terribly misleading name, since it actually turns
// *off* aspect ratio correction.
parms->keepratio = ListGetInt(tags);
break;
case DTA_RenderStyle:
parms->style.AsDWORD = ListGetInt(tags);
break;
case DTA_LegacyRenderStyle: // mainly for ZScript which does not handle FRenderStyle that well.
parms->style = (ERenderStyle)ListGetInt(tags);
break;
case DTA_SpecialColormap:
parms->specialcolormap = ListGetSpecialColormap(tags);
break;
case DTA_ColormapStyle:
parms->colormapstyle = ListGetColormapStyle(tags);
break;
case DTA_TextLen:
parms->maxstrlen = ListGetInt(tags);
break;
case DTA_CellX:
parms->cellx = ListGetInt(tags);
break;
case DTA_CellY:
parms->celly = ListGetInt(tags);
break;
}
tag = ListGetInt(tags);
}
ListEnd(tags);
if (parms->remap != nullptr && parms->remap->Inactive)
{ // If it's inactive, pretend we were passed NULL instead.
parms->remap = nullptr;
}
// intersect with the canvas's clipping rectangle.
if (clipwidth >= 0 && clipheight >= 0)
{
if (parms->lclip < clipleft) parms->lclip = clipleft;
if (parms->rclip > clipleft + clipwidth) parms->rclip = clipleft + clipwidth;
if (parms->uclip < cliptop) parms->uclip = cliptop;
if (parms->dclip > cliptop + clipheight) parms->dclip = cliptop + clipheight;
}
if (parms->uclip >= parms->dclip || parms->lclip >= parms->rclip)
{
return false;
}
if (img != NULL)
{
SetTextureParms(parms, img, x, y);
if (parms->destwidth <= 0 || parms->destheight <= 0)
{
return false;
}
}
if (parms->style.BlendOp == 255)
{
if (fillcolorset)
{
if (parms->alphaChannel)
{
parms->style = STYLE_Shaded;
}
else if (parms->Alpha < 1.f)
{
parms->style = STYLE_TranslucentStencil;
}
else
{
parms->style = STYLE_Stencil;
}
}
else if (parms->Alpha < 1.f)
{
parms->style = STYLE_Translucent;
}
else
{
parms->style = STYLE_Normal;
}
}
return true;
}
// explicitly instantiate both versions for v_text.cpp.
template bool DCanvas::ParseDrawTextureTags<Va_List>(FTexture *img, double x, double y, uint32_t tag, Va_List& tags, DrawParms *parms, bool fortext) const;
template bool DCanvas::ParseDrawTextureTags<VMVa_List>(FTexture *img, double x, double y, uint32_t tag, VMVa_List& tags, DrawParms *parms, bool fortext) const;
void DCanvas::VirtualToRealCoords(double &x, double &y, double &w, double &h,
double vwidth, double vheight, bool vbottom, bool handleaspect) const
{
float myratio = handleaspect ? ActiveRatio (Width, Height) : (4.0f / 3.0f);
// if 21:9 AR, map to 16:9 for all callers.
// this allows for black bars and stops the stretching of fullscreen images
if (myratio > 1.7f) {
myratio = 16.0f / 9.0f;
}
double right = x + w;
double bottom = y + h;
if (myratio > 1.334f)
{ // The target surface is either 16:9 or 16:10, so expand the
// specified virtual size to avoid undesired stretching of the
// image. Does not handle non-4:3 virtual sizes. I'll worry about
// those if somebody expresses a desire to use them.
x = (x - vwidth * 0.5) * Width * 960 / (vwidth * AspectBaseWidth(myratio)) + Width * 0.5;
w = (right - vwidth * 0.5) * Width * 960 / (vwidth * AspectBaseWidth(myratio)) + Width * 0.5 - x;
}
else
{
x = x * Width / vwidth;
w = right * Width / vwidth - x;
}
if (AspectTallerThanWide(myratio))
{ // The target surface is 5:4
y = (y - vheight * 0.5) * Height * 600 / (vheight * AspectBaseHeight(myratio)) + Height * 0.5;
h = (bottom - vheight * 0.5) * Height * 600 / (vheight * AspectBaseHeight(myratio)) + Height * 0.5 - y;
if (vbottom)
{
y += (Height - Height * AspectMultiplier(myratio) / 48.0) * 0.5;
}
}
else
{
y = y * Height / vheight;
h = bottom * Height / vheight - y;
}
}
DEFINE_ACTION_FUNCTION(_Screen, VirtualToRealCoords)
{
PARAM_PROLOGUE;
PARAM_FLOAT(x);
PARAM_FLOAT(y);
PARAM_FLOAT(w);
PARAM_FLOAT(h);
PARAM_FLOAT(vw);
PARAM_FLOAT(vh);
PARAM_BOOL_DEF(vbottom);
PARAM_BOOL_DEF(handleaspect);
screen->VirtualToRealCoords(x, y, w, h, vw, vh, vbottom, handleaspect);
if (numret >= 1) ret[0].SetVector2(DVector2(x, y));
if (numret >= 2) ret[1].SetVector2(DVector2(w, h));
return MIN(numret, 2);
}
void DCanvas::VirtualToRealCoordsInt(int &x, int &y, int &w, int &h,
int vwidth, int vheight, bool vbottom, bool handleaspect) const
{
double dx, dy, dw, dh;
dx = x;
dy = y;
dw = w;
dh = h;
VirtualToRealCoords(dx, dy, dw, dh, vwidth, vheight, vbottom, handleaspect);
x = int(dx + 0.5);
y = int(dy + 0.5);
w = int(dx + dw + 0.5) - x;
h = int(dy + dh + 0.5) - y;
}
void DCanvas::FillBorder (FTexture *img)
{
float myratio = ActiveRatio (Width, Height);
// if 21:9 AR, fill borders akin to 16:9, since all fullscreen
// images are being drawn to that scale.
if (myratio > 1.7f) {
myratio = 16 / 9.0f;
}
if (myratio >= 1.3f && myratio <= 1.4f)
{ // This is a 4:3 display, so no border to show
return;
}
int bordtop, bordbottom, bordleft, bordright, bord;
if (AspectTallerThanWide(myratio))
{ // Screen is taller than it is wide
bordleft = bordright = 0;
bord = Height - Height * AspectMultiplier(myratio) / 48;
bordtop = bord / 2;
bordbottom = bord - bordtop;
}
else
{ // Screen is wider than it is tall
bordtop = bordbottom = 0;
bord = Width - Width * AspectMultiplier(myratio) / 48;
bordleft = bord / 2;
bordright = bord - bordleft;
}
if (img != NULL)
{
FlatFill (0, 0, Width, bordtop, img); // Top
FlatFill (0, bordtop, bordleft, Height - bordbottom, img); // Left
FlatFill (Width - bordright, bordtop, Width, Height - bordbottom, img); // Right
FlatFill (0, Height - bordbottom, Width, Height, img); // Bottom
}
else
{
Clear (0, 0, Width, bordtop, GPalette.BlackIndex, 0); // Top
Clear (0, bordtop, bordleft, Height - bordbottom, GPalette.BlackIndex, 0); // Left
Clear (Width - bordright, bordtop, Width, Height - bordbottom, GPalette.BlackIndex, 0); // Right
Clear (0, Height - bordbottom, Width, Height, GPalette.BlackIndex, 0); // Bottom
}
}
void DCanvas::DrawLine(int x0, int y0, int x1, int y1, int palColor, uint32_t realcolor, uint8_t alpha)
{
#ifndef NO_SWRENDER
SWCanvas::DrawLine(this, x0, y0, x1, y1, palColor, realcolor, alpha);
#endif
}
DEFINE_ACTION_FUNCTION(_Screen, DrawLine)
{
PARAM_PROLOGUE;
PARAM_INT(x0);
PARAM_INT(y0);
PARAM_INT(x1);
PARAM_INT(y1);
PARAM_INT(color);
PARAM_INT_DEF(alpha);
if (!screen->HasBegun2D()) ThrowAbortException(X_OTHER, "Attempt to draw to screen outside a draw function");
screen->DrawLine(x0, y0, x1, y1, -1, color, alpha);
return 0;
}
void DCanvas::DrawThickLine(int x0, int y0, int x1, int y1, double thickness, uint32_t realcolor, uint8_t alpha) {
#ifndef NO_SWRENDER
SWCanvas::DrawLine(this, x0, y0, x1, y1, -1, realcolor, alpha);
#endif
}
DEFINE_ACTION_FUNCTION(_Screen, DrawThickLine)
{
PARAM_PROLOGUE;
PARAM_INT(x0);
PARAM_INT(y0);
PARAM_INT(x1);
PARAM_INT(y1);
PARAM_FLOAT(thickness);
PARAM_INT(color);
PARAM_INT_DEF(alpha);
if (!screen->HasBegun2D()) ThrowAbortException(X_OTHER, "Attempt to draw to screen outside a draw function");
screen->DrawLine(x0, y0, x1, y1, -1, color, alpha);
return 0;
}
void DCanvas::DrawPixel(int x, int y, int palColor, uint32_t realcolor)
{
#ifndef NO_SWRENDER
SWCanvas::DrawPixel(this, x, y, palColor, realcolor);
#endif
}
//==========================================================================
//
// DCanvas :: Clear
//
// Set an area to a specified color.
//
//==========================================================================
void DCanvas::DoClear (int left, int top, int right, int bottom, int palcolor, uint32_t color)
{
#ifndef NO_SWRENDER
if (palcolor < 0 && APART(color) != 255)
{
Dim(color, APART(color) / 255.f, left, top, right - left, bottom - top);
}
else
{
SWCanvas::Clear(this, left, top, right, bottom, palcolor, color);
}
#endif
}
void DCanvas::Clear(int left, int top, int right, int bottom, int palcolor, uint32_t color)
{
if (clipwidth >= 0 && clipheight >= 0)
{
int w = right - left;
int h = bottom - top;
if (left < clipleft)
{
w -= (clipleft - left);
left = clipleft;
}
if (w > clipwidth) w = clipwidth;
if (w <= 0) return;
if (top < cliptop)
{
h -= (cliptop - top);
top = cliptop;
}
if (h > clipheight) w = clipheight;
if (h <= 0) return;
right = left + w;
bottom = top + h;
}
DoClear(left, top, right, bottom, palcolor, color);
}
DEFINE_ACTION_FUNCTION(_Screen, Clear)
{
PARAM_PROLOGUE;
PARAM_INT(x1);
PARAM_INT(y1);
PARAM_INT(x2);
PARAM_INT(y2);
PARAM_INT(color);
PARAM_INT_DEF(palcol);
if (!screen->HasBegun2D()) ThrowAbortException(X_OTHER, "Attempt to draw to screen outside a draw function");
screen->Clear(x1, y1, x2, y2, palcol, color);
return 0;
}
//==========================================================================
//
// DCanvas :: Dim
//
// Applies a colored overlay to an area of the screen.
//
//==========================================================================
void DCanvas::DoDim(PalEntry color, float damount, int x1, int y1, int w, int h)
{
#ifndef NO_SWRENDER
SWCanvas::Dim(this, color, damount, x1, y1, w, h);
#endif
}
void DCanvas::Dim(PalEntry color, float damount, int x1, int y1, int w, int h)
{
if (clipwidth >= 0 && clipheight >= 0)
{
if (x1 < clipleft)
{
w -= (clipleft - x1);
x1 = clipleft;
}
if (w > clipwidth) w = clipwidth;
if (w <= 0) return;
if (y1 < cliptop)
{
h -= (cliptop - y1);
y1 = cliptop;
}
if (h > clipheight) h = clipheight;
if (h <= 0) return;
}
DoDim(color, damount, x1, y1, w, h);
}
DEFINE_ACTION_FUNCTION(_Screen, Dim)
{
PARAM_PROLOGUE;
PARAM_INT(color);
PARAM_FLOAT(amount);
PARAM_INT(x1);
PARAM_INT(y1);
PARAM_INT(w);
PARAM_INT(h);
if (!screen->HasBegun2D()) ThrowAbortException(X_OTHER, "Attempt to draw to screen outside a draw function");
screen->Dim(color, float(amount), x1, y1, w, h);
return 0;
}
//==========================================================================
//
// DCanvas :: FillSimplePoly
//
// Fills a simple polygon with a texture. Here, "simple" means that a
// horizontal scanline at any vertical position within the polygon will
// not cross it more than twice.
//
// The originx, originy, scale, and rotation parameters specify
// transformation of the filling texture, not of the points.
//
// The points must be specified in clockwise order.
//
//==========================================================================
void DCanvas::FillSimplePoly(FTexture *tex, FVector2 *points, int npoints,
double originx, double originy, double scalex, double scaley, DAngle rotation,
const FColormap &colormap, PalEntry flatcolor, int lightlevel, int bottomclip)
{
#ifndef NO_SWRENDER
SWCanvas::FillSimplePoly(this, tex, points, npoints, originx, originy, scalex, scaley, rotation, colormap, flatcolor, lightlevel, bottomclip);
#endif
}
/********************************/
/* */
/* Other miscellaneous routines */
/* */
/********************************/
//
// V_DrawBlock
// Draw a linear block of pixels into the view buffer.
//
void DCanvas::DrawBlock (int x, int y, int _width, int _height, const uint8_t *src) const
{
if (IsBgra())
return;
int srcpitch = _width;
int destpitch;
uint8_t *dest;
if (ClipBox (x, y, _width, _height, src, srcpitch))
{
return; // Nothing to draw
}
destpitch = Pitch;
dest = Buffer + y*Pitch + x;
do
{
memcpy (dest, src, _width);
src += srcpitch;
dest += destpitch;
} while (--_height);
}
//
// V_GetBlock
// Gets a linear block of pixels from the view buffer.
//
void DCanvas::GetBlock (int x, int y, int _width, int _height, uint8_t *dest) const
{
if (IsBgra())
return;
const uint8_t *src;
#ifdef RANGECHECK
if (x<0
||x+_width > Width
|| y<0
|| y+_height>Height)
{
I_Error ("Bad V_GetBlock");
}
#endif
src = Buffer + y*Pitch + x;
while (_height--)
{
memcpy (dest, src, _width);
src += Pitch;
dest += _width;
}
}
// Returns true if the box was completely clipped. False otherwise.
bool DCanvas::ClipBox (int &x, int &y, int &w, int &h, const uint8_t *&src, const int srcpitch) const
{
if (x >= Width || y >= Height || x+w <= 0 || y+h <= 0)
{ // Completely clipped off screen
return true;
}
if (x < 0) // clip left edge
{
src -= x;
w += x;
x = 0;
}
if (x+w > Width) // clip right edge
{
w = Width - x;
}
if (y < 0) // clip top edge
{
src -= y*srcpitch;
h += y;
y = 0;
}
if (y+h > Height) // clip bottom edge
{
h = Height - y;
}
return false;
}
//==========================================================================
//
// V_SetBorderNeedRefresh
//
// Flag the border as in need of updating. (Probably because something that
// was on top of it has changed.
//
//==========================================================================
void V_SetBorderNeedRefresh()
{
if (screen != NULL)
{
BorderNeedRefresh = screen->GetPageCount();
}
}
//==========================================================================
//
// V_DrawFrame
//
// Draw a frame around the specified area using the view border
// frame graphics. The border is drawn outside the area, not in it.
//
//==========================================================================
void V_DrawFrame (int left, int top, int width, int height)
{
FTexture *p;
const gameborder_t *border = &gameinfo.Border;
// Sanity check for incomplete gameinfo
if (border == NULL)
return;
int offset = border->offset;
int right = left + width;
int bottom = top + height;
// Draw top and bottom sides.
p = TexMan[border->t];
screen->FlatFill(left, top - p->GetHeight(), right, top, p, true);
p = TexMan[border->b];
screen->FlatFill(left, bottom, right, bottom + p->GetHeight(), p, true);
// Draw left and right sides.
p = TexMan[border->l];
screen->FlatFill(left - p->GetWidth(), top, left, bottom, p, true);
p = TexMan[border->r];
screen->FlatFill(right, top, right + p->GetWidth(), bottom, p, true);
// Draw beveled corners.
screen->DrawTexture (TexMan[border->tl], left-offset, top-offset, TAG_DONE);
screen->DrawTexture (TexMan[border->tr], left+width, top-offset, TAG_DONE);
screen->DrawTexture (TexMan[border->bl], left-offset, top+height, TAG_DONE);
screen->DrawTexture (TexMan[border->br], left+width, top+height, TAG_DONE);
}
DEFINE_ACTION_FUNCTION(_Screen, DrawFrame)
{
PARAM_PROLOGUE;
PARAM_INT(x);
PARAM_INT(y);
PARAM_INT(w);
PARAM_INT(h);
V_DrawFrame(x, y, w, h);
return 0;
}
//==========================================================================
//
// V_DrawBorder
//
//==========================================================================
void V_DrawBorder (int x1, int y1, int x2, int y2)
{
FTextureID picnum;
if (level.info != NULL && level.info->BorderTexture.Len() != 0)
{
picnum = TexMan.CheckForTexture (level.info->BorderTexture, ETextureType::Flat);
}
else
{
picnum = TexMan.CheckForTexture (gameinfo.BorderFlat, ETextureType::Flat);
}
if (picnum.isValid())
{
screen->FlatFill (x1, y1, x2, y2, TexMan(picnum));
}
else
{
screen->Clear (x1, y1, x2, y2, 0, 0);
}
}
//==========================================================================
//
// R_DrawViewBorder
//
// Draws the border around the view for different size windows
//
//==========================================================================
int BorderNeedRefresh;
static void V_DrawViewBorder (void)
{
if (viewwidth == SCREENWIDTH)
{
return;
}
V_DrawBorder (0, 0, SCREENWIDTH, viewwindowy);
V_DrawBorder (0, viewwindowy, viewwindowx, viewheight + viewwindowy);
V_DrawBorder (viewwindowx + viewwidth, viewwindowy, SCREENWIDTH, viewheight + viewwindowy);
V_DrawBorder (0, viewwindowy + viewheight, SCREENWIDTH, StatusBar->GetTopOfStatusbar());
V_DrawFrame (viewwindowx, viewwindowy, viewwidth, viewheight);
}
//==========================================================================
//
// R_DrawTopBorder
//
// Draws the top border around the view for different size windows
//
//==========================================================================
static void V_DrawTopBorder ()
{
FTexture *p;
int offset;
if (viewwidth == SCREENWIDTH)
return;
offset = gameinfo.Border.offset;
if (viewwindowy < 34)
{
V_DrawBorder (0, 0, viewwindowx, 34);
V_DrawBorder (viewwindowx, 0, viewwindowx + viewwidth, viewwindowy);
V_DrawBorder (viewwindowx + viewwidth, 0, SCREENWIDTH, 34);
p = TexMan(gameinfo.Border.t);
screen->FlatFill(viewwindowx, viewwindowy - p->GetHeight(),
viewwindowx + viewwidth, viewwindowy, p, true);
p = TexMan(gameinfo.Border.l);
screen->FlatFill(viewwindowx - p->GetWidth(), viewwindowy,
viewwindowx, 35, p, true);
p = TexMan(gameinfo.Border.r);
screen->FlatFill(viewwindowx + viewwidth, viewwindowy,
viewwindowx + viewwidth + p->GetWidth(), 35, p, true);
p = TexMan(gameinfo.Border.tl);
screen->DrawTexture (p, viewwindowx - offset, viewwindowy - offset, TAG_DONE);
p = TexMan(gameinfo.Border.tr);
screen->DrawTexture (p, viewwindowx + viewwidth, viewwindowy - offset, TAG_DONE);
}
else
{
V_DrawBorder (0, 0, SCREENWIDTH, 34);
}
}
//==========================================================================
//
// R_RefreshViewBorder
//
// Draws the border around the player view, if needed.
//
//==========================================================================
void V_RefreshViewBorder ()
{
if (setblocks < 10)
{
if (BorderNeedRefresh)
{
BorderNeedRefresh--;
if (BorderTopRefresh)
{
BorderTopRefresh--;
}
V_DrawViewBorder();
}
else if (BorderTopRefresh)
{
BorderTopRefresh--;
V_DrawTopBorder();
}
}
}
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