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gzdoom-gles/src/v_video.cpp

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/*
**
**
**---------------------------------------------------------------------------
** Copyright 1999-2016 Randy Heit
** Copyright 2005-2016 Christoph Oelckers
** 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.
**---------------------------------------------------------------------------
**
*/
//-----------------------------------------------------------------------------
//
// DESCRIPTION:
// Functions to draw patches (by post) directly to screen->
// Functions to blit a block to the screen->
//
//-----------------------------------------------------------------------------
#include <stdio.h>
#include "i_system.h"
#include "x86.h"
#include "i_video.h"
#include "r_state.h"
#include "doomstat.h"
#include "c_console.h"
#include "hu_stuff.h"
#include "m_argv.h"
#include "v_video.h"
#include "v_text.h"
#include "sc_man.h"
#include "w_wad.h"
#include "c_dispatch.h"
#include "cmdlib.h"
#include "sbar.h"
#include "hardware.h"
#include "m_png.h"
#include "r_utility.h"
#include "r_renderer.h"
#include "menu/menu.h"
#include "vm.h"
#include "r_videoscale.h"
#include "i_time.h"
EXTERN_CVAR(Bool, cl_capfps)
EXTERN_CVAR(Float, vid_brightness)
EXTERN_CVAR(Float, vid_contrast)
CVAR(Bool, gl_scale_viewport, true, CVAR_ARCHIVE);
EXTERN_CVAR(Int, screenblocks)
CUSTOM_CVAR(Int, vid_maxfps, 200, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
{
if (vid_maxfps < TICRATE && vid_maxfps != 0)
{
vid_maxfps = TICRATE;
}
else if (vid_maxfps > 1000)
{
vid_maxfps = 1000;
}
else if (cl_capfps == 0)
{
I_SetFPSLimit(vid_maxfps);
}
}
CUSTOM_CVAR(Int, vid_rendermode, 4, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
{
if (usergame)
{
// [SP] Update pitch limits to the netgame/gamesim.
players[consoleplayer].SendPitchLimits();
}
screen->SetTextureFilterMode();
// No further checks needed. All this changes now is which scene drawer the render backend calls.
}
EXTERN_CVAR(Bool, r_blendmethod)
int active_con_scale();
FRenderer *SWRenderer;
EXTERN_CVAR (Bool, fullscreen)
#define DBGBREAK assert(0)
class DDummyFrameBuffer : public DFrameBuffer
{
typedef DFrameBuffer Super;
public:
DDummyFrameBuffer (int width, int height)
: DFrameBuffer (0, 0, false)
{
Width = width;
Height = height;
}
// These methods should never be called.
void Update() { DBGBREAK; }
bool IsFullscreen() { DBGBREAK; return 0; }
int GetClientWidth() { DBGBREAK; return 0; }
int GetClientHeight() { DBGBREAK; return 0; }
float Gamma;
};
class FPaletteTester : public FTexture
{
public:
FPaletteTester ();
const uint8_t *GetColumn(FRenderStyle, unsigned int column, const Span **spans_out) override;
const uint8_t *GetPixels(FRenderStyle);
bool CheckModified(FRenderStyle);
void SetTranslation(int num);
protected:
uint8_t Pixels[16*16];
int CurTranslation;
int WantTranslation;
static const Span DummySpan[2];
void MakeTexture();
};
const FTexture::Span FPaletteTester::DummySpan[2] = { { 0, 16 }, { 0, 0 } };
int DisplayWidth, DisplayHeight, DisplayBits;
FFont *SmallFont, *SmallFont2, *BigFont, *ConFont, *IntermissionFont;
uint32_t Col2RGB8[65][256];
uint32_t *Col2RGB8_LessPrecision[65];
uint32_t Col2RGB8_Inverse[65][256];
ColorTable32k RGB32k;
ColorTable256k RGB256k;
static uint32_t Col2RGB8_2[63][256];
// [RH] The framebuffer is no longer a mere byte array.
// There's also only one, not four.
DFrameBuffer *screen;
CVAR (Int, vid_defwidth, 640, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
CVAR (Int, vid_defheight, 480, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
CVAR (Int, vid_defbits, 8, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
CVAR (Bool, vid_fps, false, 0)
CVAR (Bool, ticker, false, 0)
CVAR (Int, vid_showpalette, 0, 0)
CUSTOM_CVAR (Bool, vid_vsync, false, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
{
if (screen != NULL)
{
screen->SetVSync (*self);
}
}
CUSTOM_CVAR (Int, vid_refreshrate, 0, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
{
if (screen != NULL)
{
screen->NewRefreshRate();
}
}
// [RH] Set true when vid_setmode command has been executed
bool setmodeneeded = false;
// [RH] Resolution to change to when setmodeneeded is true
int NewWidth, NewHeight, NewBits;
//==========================================================================
//
// DCanvas Constructor
//
//==========================================================================
DCanvas::DCanvas (int _width, int _height, bool _bgra)
{
// Init member vars
Width = _width;
Height = _height;
Bgra = _bgra;
}
//==========================================================================
//
// DCanvas Destructor
//
//==========================================================================
DCanvas::~DCanvas ()
{
}
//==========================================================================
//
// V_GetColorFromString
//
// Passed a string of the form "#RGB", "#RRGGBB", "R G B", or "RR GG BB",
// returns a number representing that color. If palette is non-NULL, the
// index of the best match in the palette is returned, otherwise the
// RRGGBB value is returned directly.
//
//==========================================================================
int V_GetColorFromString (const uint32_t *palette, const char *cstr, FScriptPosition *sc)
{
int c[3], i, p;
char val[3];
val[2] = '\0';
// Check for HTML-style #RRGGBB or #RGB color string
if (cstr[0] == '#')
{
size_t len = strlen (cstr);
if (len == 7)
{
// Extract each eight-bit component into c[].
for (i = 0; i < 3; ++i)
{
val[0] = cstr[1 + i*2];
val[1] = cstr[2 + i*2];
c[i] = ParseHex (val, sc);
}
}
else if (len == 4)
{
// Extract each four-bit component into c[], expanding to eight bits.
for (i = 0; i < 3; ++i)
{
val[1] = val[0] = cstr[1 + i];
c[i] = ParseHex (val, sc);
}
}
else
{
// Bad HTML-style; pretend it's black.
c[2] = c[1] = c[0] = 0;
}
}
else
{
if (strlen(cstr) == 6)
{
char *p;
int color = strtol(cstr, &p, 16);
if (*p == 0)
{
// RRGGBB string
c[0] = (color & 0xff0000) >> 16;
c[1] = (color & 0xff00) >> 8;
c[2] = (color & 0xff);
}
else goto normal;
}
else
{
normal:
// Treat it as a space-delimited hexadecimal string
for (i = 0; i < 3; ++i)
{
// Skip leading whitespace
while (*cstr <= ' ' && *cstr != '\0')
{
cstr++;
}
// Extract a component and convert it to eight-bit
for (p = 0; *cstr > ' '; ++p, ++cstr)
{
if (p < 2)
{
val[p] = *cstr;
}
}
if (p == 0)
{
c[i] = 0;
}
else
{
if (p == 1)
{
val[1] = val[0];
}
c[i] = ParseHex (val, sc);
}
}
}
}
if (palette)
return ColorMatcher.Pick (c[0], c[1], c[2]);
else
return MAKERGB(c[0], c[1], c[2]);
}
//==========================================================================
//
// V_GetColorStringByName
//
// Searches for the given color name in x11r6rgb.txt and returns an
// HTML-ish "#RRGGBB" string for it if found or the empty string if not.
//
//==========================================================================
FString V_GetColorStringByName (const char *name, FScriptPosition *sc)
{
FMemLump rgbNames;
char *rgbEnd;
char *rgb, *endp;
int rgblump;
int c[3], step;
size_t namelen;
if (Wads.GetNumLumps()==0) return FString();
rgblump = Wads.CheckNumForName ("X11R6RGB");
if (rgblump == -1)
{
if (!sc) Printf ("X11R6RGB lump not found\n");
else sc->Message(MSG_WARNING, "X11R6RGB lump not found");
return FString();
}
rgbNames = Wads.ReadLump (rgblump);
rgb = (char *)rgbNames.GetMem();
rgbEnd = rgb + Wads.LumpLength (rgblump);
step = 0;
namelen = strlen (name);
while (rgb < rgbEnd)
{
// Skip white space
if (*rgb <= ' ')
{
do
{
rgb++;
} while (rgb < rgbEnd && *rgb <= ' ');
}
else if (step == 0 && *rgb == '!')
{ // skip comment lines
do
{
rgb++;
} while (rgb < rgbEnd && *rgb != '\n');
}
else if (step < 3)
{ // collect RGB values
c[step++] = strtoul (rgb, &endp, 10);
if (endp == rgb)
{
break;
}
rgb = endp;
}
else
{ // Check color name
endp = rgb;
// Find the end of the line
while (endp < rgbEnd && *endp != '\n')
endp++;
// Back up over any whitespace
while (endp > rgb && *endp <= ' ')
endp--;
if (endp == rgb)
{
break;
}
size_t checklen = ++endp - rgb;
if (checklen == namelen && strnicmp (rgb, name, checklen) == 0)
{
FString descr;
descr.Format ("#%02x%02x%02x", c[0], c[1], c[2]);
return descr;
}
rgb = endp;
step = 0;
}
}
if (rgb < rgbEnd)
{
if (!sc) Printf ("X11R6RGB lump is corrupt\n");
else sc->Message(MSG_WARNING, "X11R6RGB lump is corrupt");
}
return FString();
}
//==========================================================================
//
// V_GetColor
//
// Works like V_GetColorFromString(), but also understands X11 color names.
//
//==========================================================================
int V_GetColor (const uint32_t *palette, const char *str, FScriptPosition *sc)
{
FString string = V_GetColorStringByName (str, sc);
int res;
if (!string.IsEmpty())
{
res = V_GetColorFromString (palette, string, sc);
}
else
{
res = V_GetColorFromString (palette, str, sc);
}
return res;
}
int V_GetColor(const uint32_t *palette, FScanner &sc)
{
FScriptPosition scc = sc;
return V_GetColor(palette, sc.String, &scc);
}
//==========================================================================
//
// BuildTransTable
//
// Build the tables necessary for blending
//
//==========================================================================
static void BuildTransTable (const PalEntry *palette)
{
int r, g, b;
// create the RGB555 lookup table
for (r = 0; r < 32; r++)
for (g = 0; g < 32; g++)
for (b = 0; b < 32; b++)
RGB32k.RGB[r][g][b] = ColorMatcher.Pick ((r<<3)|(r>>2), (g<<3)|(g>>2), (b<<3)|(b>>2));
// create the RGB666 lookup table
for (r = 0; r < 64; r++)
for (g = 0; g < 64; g++)
for (b = 0; b < 64; b++)
RGB256k.RGB[r][g][b] = ColorMatcher.Pick ((r<<2)|(r>>4), (g<<2)|(g>>4), (b<<2)|(b>>4));
int x, y;
// create the swizzled palette
for (x = 0; x < 65; x++)
for (y = 0; y < 256; y++)
Col2RGB8[x][y] = (((palette[y].r*x)>>4)<<20) |
((palette[y].g*x)>>4) |
(((palette[y].b*x)>>4)<<10);
// create the swizzled palette with the lsb of red and blue forced to 0
// (for green, a 1 is okay since it never gets added into)
for (x = 1; x < 64; x++)
{
Col2RGB8_LessPrecision[x] = Col2RGB8_2[x-1];
for (y = 0; y < 256; y++)
{
Col2RGB8_2[x-1][y] = Col2RGB8[x][y] & 0x3feffbff;
}
}
Col2RGB8_LessPrecision[0] = Col2RGB8[0];
Col2RGB8_LessPrecision[64] = Col2RGB8[64];
// create the inverse swizzled palette
for (x = 0; x < 65; x++)
for (y = 0; y < 256; y++)
{
Col2RGB8_Inverse[x][y] = (((((255-palette[y].r)*x)>>4)<<20) |
(((255-palette[y].g)*x)>>4) |
((((255-palette[y].b)*x)>>4)<<10)) & 0x3feffbff;
}
}
//==========================================================================
//
// DCanvas :: CalcGamma
//
//==========================================================================
void DFrameBuffer::CalcGamma (float gamma, uint8_t gammalookup[256])
{
// I found this formula on the web at
// <http://panda.mostang.com/sane/sane-gamma.html>,
// but that page no longer exits.
double invgamma = 1.f / gamma;
int i;
for (i = 0; i < 256; i++)
{
gammalookup[i] = (uint8_t)(255.0 * pow (i / 255.0, invgamma) + 0.5);
}
}
//==========================================================================
//
// DSimpleCanvas Constructor
//
// A simple canvas just holds a buffer in main memory.
//
//==========================================================================
DSimpleCanvas::DSimpleCanvas (int width, int height, bool bgra)
: DCanvas (width, height, bgra)
{
PixelBuffer = nullptr;
Resize(width, height);
}
void DSimpleCanvas::Resize(int width, int height)
{
Width = width;
Height = height;
if (PixelBuffer != NULL)
{
delete[] PixelBuffer;
PixelBuffer = NULL;
}
// Making the pitch a power of 2 is very bad for performance
// Try to maximize the number of cache lines that can be filled
// for each column drawing operation by making the pitch slightly
// longer than the width. The values used here are all based on
// empirical evidence.
if (width <= 640)
{
// For low resolutions, just keep the pitch the same as the width.
// Some speedup can be seen using the technique below, but the speedup
// is so marginal that I don't consider it worthwhile.
Pitch = width;
}
else
{
// If we couldn't figure out the CPU's L1 cache line size, assume
// it's 32 bytes wide.
if (CPU.DataL1LineSize == 0)
{
CPU.DataL1LineSize = 32;
}
// The Athlon and P3 have very different caches, apparently.
// I am going to generalize the Athlon's performance to all AMD
// processors and the P3's to all non-AMD processors. I don't know
// how smart that is, but I don't have a vast plethora of
// processors to test with.
if (CPU.bIsAMD)
{
Pitch = width + CPU.DataL1LineSize;
}
else
{
Pitch = width + MAX(0, CPU.DataL1LineSize - 8);
}
}
int bytes_per_pixel = Bgra ? 4 : 1;
PixelBuffer = new uint8_t[Pitch * height * bytes_per_pixel];
memset (PixelBuffer, 0, Pitch * height * bytes_per_pixel);
}
//==========================================================================
//
// DSimpleCanvas Destructor
//
//==========================================================================
DSimpleCanvas::~DSimpleCanvas ()
{
if (PixelBuffer != NULL)
{
delete[] PixelBuffer;
PixelBuffer = NULL;
}
}
//==========================================================================
//
// DFrameBuffer Constructor
//
// A frame buffer canvas is the most common and represents the image that
// gets drawn to the screen.
//
//==========================================================================
DFrameBuffer::DFrameBuffer (int width, int height, bool bgra)
//: DCanvas
{
Width = ViewportScaledWidth(width, height);
Height = ViewportScaledHeight(width, height);
Bgra = bgra;
LastMS = LastSec = FrameCount = LastCount = LastTic = 0;
VideoWidth = width;
VideoHeight = height;
}
//==========================================================================
//
// DFrameBuffer :: DrawRateStuff
//
// Draws the fps counter, dot ticker, and palette debug.
//
//==========================================================================
void DFrameBuffer::DrawRateStuff ()
{
// Draws frame time and cumulative fps
if (vid_fps)
{
uint64_t ms = screen->FrameTime;
uint64_t howlong = ms - LastMS;
if ((signed)howlong >= 0)
{
char fpsbuff[40];
int chars;
int rate_x;
int textScale = active_con_scale();
chars = mysnprintf (fpsbuff, countof(fpsbuff), "%2" PRIu64 " ms (%3" PRIu64 " fps)", howlong, LastCount);
rate_x = Width / textScale - ConFont->StringWidth(&fpsbuff[0]);
Clear (rate_x * textScale, 0, Width, ConFont->GetHeight() * textScale, GPalette.BlackIndex, 0);
DrawText (ConFont, CR_WHITE, rate_x, 0, (char *)&fpsbuff[0],
DTA_VirtualWidth, screen->GetWidth() / textScale,
DTA_VirtualHeight, screen->GetHeight() / textScale,
DTA_KeepRatio, true, TAG_DONE);
uint32_t thisSec = (uint32_t)(ms/1000);
if (LastSec < thisSec)
{
LastCount = FrameCount / (thisSec - LastSec);
LastSec = thisSec;
FrameCount = 0;
}
FrameCount++;
}
LastMS = ms;
}
// draws little dots on the bottom of the screen
if (ticker)
{
int64_t t = I_GetTime();
int64_t tics = t - LastTic;
LastTic = t;
if (tics > 20) tics = 20;
int i;
for (i = 0; i < tics*2; i += 2) Clear(i, Height-1, i+1, Height, 255, 0);
for ( ; i < 20*2; i += 2) Clear(i, Height-1, i+1, Height, 0, 0);
}
// draws the palette for debugging
if (vid_showpalette)
{
// This used to just write the palette to the display buffer.
// With hardware-accelerated 2D, that doesn't work anymore.
// Drawing it as a texture does and continues to show how
// well the PalTex shader is working.
static FPaletteTester palette;
int size = screen->GetHeight() < 800 ? 16 * 7 : 16 * 7 * 2;
palette.SetTranslation(vid_showpalette);
DrawTexture(&palette, 0, 0,
DTA_DestWidth, size,
DTA_DestHeight, size,
DTA_Masked, false,
TAG_DONE);
}
}
//==========================================================================
//
// FPaleteTester Constructor
//
// This is just a 16x16 image with every possible color value.
//
//==========================================================================
FPaletteTester::FPaletteTester()
{
Width = 16;
Height = 16;
WidthBits = 4;
HeightBits = 4;
WidthMask = 15;
CurTranslation = 0;
WantTranslation = 1;
MakeTexture();
}
//==========================================================================
//
// FPaletteTester :: CheckModified
//
//==========================================================================
bool FPaletteTester::CheckModified(FRenderStyle)
{
return CurTranslation != WantTranslation;
}
//==========================================================================
//
// FPaletteTester :: SetTranslation
//
//==========================================================================
void FPaletteTester::SetTranslation(int num)
{
if (num >= 1 && num <= 9)
{
WantTranslation = num;
}
}
//==========================================================================
//
// FPaletteTester :: GetColumn
//
//==========================================================================
const uint8_t *FPaletteTester::GetColumn(FRenderStyle, unsigned int column, const Span **spans_out)
{
if (CurTranslation != WantTranslation)
{
MakeTexture();
}
column &= 15;
if (spans_out != NULL)
{
*spans_out = DummySpan;
}
return Pixels + column*16;
}
//==========================================================================
//
// FPaletteTester :: GetPixels
//
//==========================================================================
const uint8_t *FPaletteTester::GetPixels (FRenderStyle)
{
if (CurTranslation != WantTranslation)
{
MakeTexture();
}
return Pixels;
}
//==========================================================================
//
// FPaletteTester :: MakeTexture
//
//==========================================================================
void FPaletteTester::MakeTexture()
{
int i, j, k, t;
uint8_t *p;
t = WantTranslation;
p = Pixels;
k = 0;
for (i = 0; i < 16; ++i)
{
for (j = 0; j < 16; ++j)
{
*p++ = (t > 1) ? translationtables[TRANSLATION_Standard][t - 2]->Remap[k] : k;
k += 16;
}
k -= 255;
}
CurTranslation = t;
}
//==========================================================================
//
// Palette stuff.
//
//==========================================================================
void DFrameBuffer::GetFlashedPalette(PalEntry pal[256])
{
DoBlending(SourcePalette, pal, 256, Flash.r, Flash.g, Flash.b, Flash.a);
}
PalEntry *DFrameBuffer::GetPalette()
{
return SourcePalette;
}
bool DFrameBuffer::SetFlash(PalEntry rgb, int amount)
{
Flash = PalEntry(amount, rgb.r, rgb.g, rgb.b);
return true;
}
void DFrameBuffer::GetFlash(PalEntry &rgb, int &amount)
{
rgb = Flash;
rgb.a = 0;
amount = Flash.a;
}
//==========================================================================
//
// DFrameBuffer :: SetVSync
//
// Turns vertical sync on and off, if supported.
//
//==========================================================================
void DFrameBuffer::SetVSync (bool vsync)
{
}
//==========================================================================
//
// DFrameBuffer :: NewRefreshRate
//
// Sets the fullscreen display to the new refresh rate in vid_refreshrate,
// if possible.
//
//==========================================================================
void DFrameBuffer::NewRefreshRate ()
{
}
//==========================================================================
//
// DFrameBuffer :: WipeStartScreen
//
// Grabs a copy of the screen currently displayed to serve as the initial
// frame of a screen wipe. Also determines which screenwipe will be
// performed.
//
//==========================================================================
bool DFrameBuffer::WipeStartScreen(int type)
{
return false;
}
//==========================================================================
//
// DFrameBuffer :: WipeEndScreen
//
// Grabs a copy of the most-recently drawn, but not yet displayed, screen
// to serve as the final frame of a screen wipe.
//
//==========================================================================
void DFrameBuffer::WipeEndScreen()
{
}
//==========================================================================
//
// DFrameBuffer :: WipeDo
//
// Draws one frame of a screenwipe. Should be called no more than 35
// times per second. If called less than that, ticks indicates how many
// ticks have passed since the last call.
//
//==========================================================================
bool DFrameBuffer::WipeDo(int ticks)
{
return false;
}
//==========================================================================
//
// DFrameBuffer :: WipeCleanup
//
//==========================================================================
void DFrameBuffer::WipeCleanup()
{
}
//==========================================================================
//
// DFrameBuffer :: InitPalette
//
//==========================================================================
void DFrameBuffer::InitPalette()
{
memcpy(SourcePalette, GPalette.BaseColors, sizeof(PalEntry) * 256);
UpdatePalette();
}
//==========================================================================
//
//
//
//==========================================================================
void DFrameBuffer::BuildGammaTable(uint16_t *gammaTable)
{
float gamma = clamp<float>(Gamma, 0.1f, 4.f);
float contrast = clamp<float>(vid_contrast, 0.1f, 3.f);
float bright = clamp<float>(vid_brightness, -0.8f, 0.8f);
double invgamma = 1 / gamma;
double norm = pow(255., invgamma - 1);
for (int i = 0; i < 256; i++)
{
double val = i * contrast - (contrast - 1) * 127;
val += bright * 128;
if (gamma != 1) val = pow(val, invgamma) / norm;
gammaTable[i] = gammaTable[i + 256] = gammaTable[i + 512] = (uint16_t)clamp<double>(val * 256, 0, 0xffff);
}
}
//==========================================================================
//
// DFrameBuffer :: GetCaps
//
//==========================================================================
EXTERN_CVAR(Bool, r_drawvoxels)
uint32_t DFrameBuffer::GetCaps()
{
ActorRenderFeatureFlags FlagSet = 0;
if (V_IsPolyRenderer())
FlagSet |= RFF_POLYGONAL | RFF_TILTPITCH | RFF_SLOPE3DFLOORS;
else
{
FlagSet |= RFF_UNCLIPPEDTEX;
if (r_drawvoxels)
FlagSet |= RFF_VOXELS;
}
if (V_IsTrueColor())
FlagSet |= RFF_TRUECOLOR;
else
FlagSet |= RFF_COLORMAP;
return (uint32_t)FlagSet;
}
void DFrameBuffer::RenderTextureView(FCanvasTexture *tex, AActor *Viewpoint, double FOV)
{
SWRenderer->RenderTextureView(tex, Viewpoint, FOV);
}
void DFrameBuffer::WriteSavePic(player_t *player, FileWriter *file, int width, int height)
{
SWRenderer->WriteSavePic(player, file, width, height);
}
//==========================================================================
//
// Calculates the viewport values needed for 2D and 3D operations
//
//==========================================================================
void DFrameBuffer::SetOutputViewport(IntRect *bounds)
{
if (bounds)
{
mSceneViewport = *bounds;
mScreenViewport = *bounds;
mOutputLetterbox = *bounds;
return;
}
// Special handling so the view with a visible status bar displays properly
int height, width;
if (screenblocks >= 10)
{
height = GetHeight();
width = GetWidth();
}
else
{
height = (screenblocks*GetHeight() / 10) & ~7;
width = (screenblocks*GetWidth() / 10);
}
// Back buffer letterbox for the final output
int clientWidth = GetClientWidth();
int clientHeight = GetClientHeight();
if (clientWidth == 0 || clientHeight == 0)
{
// When window is minimized there may not be any client area.
// Pretend to the rest of the render code that we just have a very small window.
clientWidth = 160;
clientHeight = 120;
}
int screenWidth = GetWidth();
int screenHeight = GetHeight();
float scaleX, scaleY;
if (ViewportIsScaled43())
{
scaleX = MIN(clientWidth / (float)screenWidth, clientHeight / (screenHeight * 1.2f));
scaleY = scaleX * 1.2f;
}
else
{
scaleX = MIN(clientWidth / (float)screenWidth, clientHeight / (float)screenHeight);
scaleY = scaleX;
}
mOutputLetterbox.width = (int)round(screenWidth * scaleX);
mOutputLetterbox.height = (int)round(screenHeight * scaleY);
mOutputLetterbox.left = (clientWidth - mOutputLetterbox.width) / 2;
mOutputLetterbox.top = (clientHeight - mOutputLetterbox.height) / 2;
// The entire renderable area, including the 2D HUD
mScreenViewport.left = 0;
mScreenViewport.top = 0;
mScreenViewport.width = screenWidth;
mScreenViewport.height = screenHeight;
// Viewport for the 3D scene
mSceneViewport.left = viewwindowx;
mSceneViewport.top = screenHeight - (height + viewwindowy - ((height - viewheight) / 2));
mSceneViewport.width = viewwidth;
mSceneViewport.height = height;
// Scale viewports to fit letterbox
bool notScaled = ((mScreenViewport.width == ViewportScaledWidth(mScreenViewport.width, mScreenViewport.height)) &&
(mScreenViewport.width == ViewportScaledHeight(mScreenViewport.width, mScreenViewport.height)) &&
!ViewportIsScaled43());
if ((gl_scale_viewport && !IsFullscreen() && notScaled) || !RenderBuffersEnabled())
{
mScreenViewport.width = mOutputLetterbox.width;
mScreenViewport.height = mOutputLetterbox.height;
mSceneViewport.left = (int)round(mSceneViewport.left * scaleX);
mSceneViewport.top = (int)round(mSceneViewport.top * scaleY);
mSceneViewport.width = (int)round(mSceneViewport.width * scaleX);
mSceneViewport.height = (int)round(mSceneViewport.height * scaleY);
// Without render buffers we have to render directly to the letterbox
if (!RenderBuffersEnabled())
{
mScreenViewport.left += mOutputLetterbox.left;
mScreenViewport.top += mOutputLetterbox.top;
mSceneViewport.left += mOutputLetterbox.left;
mSceneViewport.top += mOutputLetterbox.top;
}
}
}
//===========================================================================
//
// Calculates the OpenGL window coordinates for a zdoom screen position
//
//===========================================================================
int DFrameBuffer::ScreenToWindowX(int x)
{
return mScreenViewport.left + (int)round(x * mScreenViewport.width / (float)GetWidth());
}
int DFrameBuffer::ScreenToWindowY(int y)
{
return mScreenViewport.top + mScreenViewport.height - (int)round(y * mScreenViewport.height / (float)GetHeight());
}
void DFrameBuffer::ScaleCoordsFromWindow(int16_t &x, int16_t &y)
{
int letterboxX = mOutputLetterbox.left;
int letterboxY = mOutputLetterbox.top;
int letterboxWidth = mOutputLetterbox.width;
int letterboxHeight = mOutputLetterbox.height;
// Subtract the LB video mode letterboxing
if (IsFullscreen())
y -= (GetTrueHeight() - VideoHeight) / 2;
x = int16_t((x - letterboxX) * Width / letterboxWidth);
y = int16_t((y - letterboxY) * Height / letterboxHeight);
}
CCMD(clean)
{
Printf ("CleanXfac: %d\nCleanYfac: %d\n", CleanXfac, CleanYfac);
}
//
// V_SetResolution
//
bool V_DoModeSetup (int width, int height, int bits)
{
DFrameBuffer *buff = I_SetMode (width, height, screen);
if (buff == NULL)
{
return false;
}
screen = buff;
screen->SetGamma ();
DisplayBits = bits;
V_UpdateModeSize(screen->GetWidth(), screen->GetHeight());
M_RefreshModesList ();
return true;
}
void V_UpdateModeSize (int width, int height)
{
int cx1, cx2;
V_CalcCleanFacs(320, 200, width, height, &CleanXfac, &CleanYfac, &cx1, &cx2);
CleanWidth = width / CleanXfac;
CleanHeight = height / CleanYfac;
assert(CleanWidth >= 320);
assert(CleanHeight >= 200);
if (width < 800 || width >= 960)
{
if (cx1 < cx2)
{
// Special case in which we don't need to scale down.
CleanXfac_1 =
CleanYfac_1 = cx1;
}
else
{
CleanXfac_1 = MAX(CleanXfac - 1, 1);
CleanYfac_1 = MAX(CleanYfac - 1, 1);
// On larger screens this is not enough so make sure it's at most 3/4 of the screen's width
while (CleanXfac_1 * 320 > screen->GetWidth()*3/4 && CleanXfac_1 > 2)
{
CleanXfac_1--;
CleanYfac_1--;
}
}
CleanWidth_1 = width / CleanXfac_1;
CleanHeight_1 = height / CleanYfac_1;
}
else // if the width is between 800 and 960 the ratio between the screensize and CleanXFac-1 becomes too large.
{
CleanXfac_1 = CleanXfac;
CleanYfac_1 = CleanYfac;
CleanWidth_1 = CleanWidth;
CleanHeight_1 = CleanHeight;
}
DisplayWidth = width;
DisplayHeight = height;
R_OldBlend = ~0;
}
void V_OutputResized (int width, int height)
{
V_UpdateModeSize(width, height);
setsizeneeded = true;
if (StatusBar != NULL)
{
StatusBar->CallScreenSizeChanged();
}
C_NewModeAdjust();
}
void V_CalcCleanFacs (int designwidth, int designheight, int realwidth, int realheight, int *cleanx, int *cleany, int *_cx1, int *_cx2)
{
float ratio;
int cwidth;
int cheight;
int cx1, cy1, cx2, cy2;
// For larger screems always use at least a 16:9 ratio for clean factor calculation, even if the actual ratio is narrower.
if (realwidth > 1280 && (double)realwidth / realheight < 16./9)
{
realheight = realwidth * 9 / 16;
}
ratio = ActiveRatio(realwidth, realheight);
if (AspectTallerThanWide(ratio))
{
cwidth = realwidth;
cheight = realheight * AspectMultiplier(ratio) / 48;
}
else
{
cwidth = realwidth * AspectMultiplier(ratio) / 48;
cheight = realheight;
}
// Use whichever pair of cwidth/cheight or width/height that produces less difference
// between CleanXfac and CleanYfac.
cx1 = MAX(cwidth / designwidth, 1);
cy1 = MAX(cheight / designheight, 1);
cx2 = MAX(realwidth / designwidth, 1);
cy2 = MAX(realheight / designheight, 1);
if (abs(cx1 - cy1) <= abs(cx2 - cy2) || MAX(cx1, cx2) >= 4)
{ // e.g. 640x360 looks better with this.
*cleanx = cx1;
*cleany = cy1;
}
else
{ // e.g. 720x480 looks better with this.
*cleanx = cx2;
*cleany = cy2;
}
if (*cleanx < *cleany)
*cleany = *cleanx;
else
*cleanx = *cleany;
if (_cx1 != NULL) *_cx1 = cx1;
if (_cx2 != NULL) *_cx2 = cx2;
}
bool IVideo::SetResolution (int width, int height, int bits)
{
int oldwidth, oldheight;
int oldbits;
if (screen)
{
oldwidth = SCREENWIDTH;
oldheight = SCREENHEIGHT;
oldbits = DisplayBits;
}
else
{ // Harmless if screen wasn't allocated
oldwidth = width;
oldheight = height;
oldbits = bits;
}
I_ClosestResolution (&width, &height, bits);
if (!I_CheckResolution (width, height, bits))
{ // Try specified resolution
if (!I_CheckResolution (oldwidth, oldheight, oldbits))
{ // Try previous resolution (if any)
return false;
}
else
{
width = oldwidth;
height = oldheight;
bits = oldbits;
}
}
return V_DoModeSetup (width, height, bits);
}
CCMD (vid_setmode)
{
int width = 0, height = SCREENHEIGHT;
int bits = DisplayBits;
if (argv.argc() > 1)
{
width = atoi (argv[1]);
if (argv.argc() > 2)
{
height = atoi (argv[2]);
if (argv.argc() > 3)
{
bits = atoi (argv[3]);
}
}
}
const bool goodmode = (width > 0 && height > 0)
&& (!fullscreen || (Video != nullptr && I_CheckResolution(width, height, bits)));
if (goodmode)
{
// The actual change of resolution will take place
// near the beginning of D_Display().
if (gamestate != GS_STARTUP)
{
setmodeneeded = true;
NewWidth = width;
NewHeight = height;
NewBits = bits;
}
}
else if (width)
{
Printf ("Unknown resolution %d x %d x %d\n", width, height, bits);
}
else
{
Printf ("Usage: vid_setmode <width> <height> <mode>\n");
}
}
//
// V_Init
//
void V_Init (bool restart)
{
const char *i;
int width, height, bits;
atterm (V_Shutdown);
// [RH] Initialize palette management
InitPalette ();
if (!restart)
{
width = height = bits = 0;
if ( (i = Args->CheckValue ("-width")) )
width = atoi (i);
if ( (i = Args->CheckValue ("-height")) )
height = atoi (i);
if ( (i = Args->CheckValue ("-bits")) )
bits = atoi (i);
if (width == 0)
{
if (height == 0)
{
width = vid_defwidth;
height = vid_defheight;
}
else
{
width = (height * 8) / 6;
}
}
else if (height == 0)
{
height = (width * 6) / 8;
}
if (bits == 0)
{
bits = vid_defbits;
}
screen = new DDummyFrameBuffer (width, height);
}
// Update screen palette when restarting
else
{
PalEntry *palette = screen->GetPalette ();
for (int i = 0; i < 256; ++i)
*palette++ = GPalette.BaseColors[i];
screen->UpdatePalette();
}
BuildTransTable (GPalette.BaseColors);
}
void V_Init2()
{
int width = screen->GetWidth();
int height = screen->GetHeight();
float gamma = static_cast<DDummyFrameBuffer *>(screen)->Gamma;
{
DFrameBuffer *s = screen;
screen = NULL;
delete s;
}
I_InitGraphics();
I_ClosestResolution (&width, &height, 8);
if (!Video->SetResolution (width, height, 8))
I_FatalError ("Could not set resolution to %d x %d x %d", width, height, 8);
else
Printf ("Resolution: %d x %d\n", SCREENWIDTH, SCREENHEIGHT);
screen->SetGamma ();
FBaseCVar::ResetColors ();
C_NewModeAdjust();
M_InitVideoModesMenu();
setsizeneeded = true;
}
void V_Shutdown()
{
if (screen)
{
DFrameBuffer *s = screen;
screen = NULL;
delete s;
}
V_ClearFonts();
}
CUSTOM_CVAR (Int, vid_aspect, 0, CVAR_GLOBALCONFIG|CVAR_ARCHIVE)
{
setsizeneeded = true;
if (StatusBar != NULL)
{
StatusBar->CallScreenSizeChanged();
}
}
// Helper for ActiveRatio and CheckRatio. Returns the forced ratio type, or -1 if none.
int ActiveFakeRatio(int width, int height)
{
int fakeratio = -1;
if ((vid_aspect >= 1) && (vid_aspect <= 6))
{
// [SP] User wants to force aspect ratio; let them.
fakeratio = int(vid_aspect);
if (fakeratio == 3)
{
fakeratio = 0;
}
else if (fakeratio == 5)
{
fakeratio = 3;
}
}
else if (vid_aspect == 0 && ViewportIsScaled43())
{
fakeratio = 0;
}
return fakeratio;
}
// Active screen ratio based on cvars and size
float ActiveRatio(int width, int height, float *trueratio)
{
static float forcedRatioTypes[] =
{
4 / 3.0f,
16 / 9.0f,
16 / 10.0f,
17 / 10.0f,
5 / 4.0f,
17 / 10.0f,
21 / 9.0f
};
float ratio = width / (float)height;
int fakeratio = ActiveFakeRatio(width, height);
if (trueratio)
*trueratio = ratio;
return (fakeratio != -1) ? forcedRatioTypes[fakeratio] : ratio;
}
DEFINE_ACTION_FUNCTION(_Screen, GetAspectRatio)
{
ACTION_RETURN_FLOAT(ActiveRatio(screen->GetWidth(), screen->GetHeight(), nullptr));
}
// Tries to guess the physical dimensions of the screen based on the
// screen's pixel dimensions. Can return:
// 0: 4:3
// 1: 16:9
// 2: 16:10
// 3: 17:10
// 4: 5:4
// 5: 17:10 (redundant, never returned)
// 6: 21:9
int CheckRatio (int width, int height, int *trueratio)
{
float aspect = width / (float)height;
static std::pair<float, int> ratioTypes[] =
{
{ 21 / 9.0f , 6 },
{ 16 / 9.0f , 1 },
{ 17 / 10.0f , 3 },
{ 16 / 10.0f , 2 },
{ 4 / 3.0f , 0 },
{ 5 / 4.0f , 4 },
{ 0.0f, 0 }
};
int ratio = ratioTypes[0].second;
float distance = fabs(ratioTypes[0].first - aspect);
for (int i = 1; ratioTypes[i].first != 0.0f; i++)
{
float d = fabs(ratioTypes[i].first - aspect);
if (d < distance)
{
ratio = ratioTypes[i].second;
distance = d;
}
}
int fakeratio = ActiveFakeRatio(width, height);
if (fakeratio == -1)
fakeratio = ratio;
if (trueratio)
*trueratio = ratio;
return fakeratio;
}
int AspectBaseWidth(float aspect)
{
return (int)round(240.0f * aspect * 3.0f);
}
int AspectBaseHeight(float aspect)
{
if (!AspectTallerThanWide(aspect))
return (int)round(200.0f * (320.0f / (AspectBaseWidth(aspect) / 3.0f)) * 3.0f);
else
return (int)round((200.0f * (4.0f / 3.0f)) / aspect * 3.0f);
}
double AspectPspriteOffset(float aspect)
{
if (!AspectTallerThanWide(aspect))
return 0.0;
else
return ((4.0 / 3.0) / aspect - 1.0) * 97.5;
}
int AspectMultiplier(float aspect)
{
if (!AspectTallerThanWide(aspect))
return (int)round(320.0f / (AspectBaseWidth(aspect) / 3.0f) * 48.0f);
else
return (int)round(200.0f / (AspectBaseHeight(aspect) / 3.0f) * 48.0f);
}
bool AspectTallerThanWide(float aspect)
{
return aspect < 1.333f;
}
void ScaleWithAspect (int &w, int &h, int Width, int Height)
{
int resRatio = CheckRatio (Width, Height);
int screenRatio;
CheckRatio (w, h, &screenRatio);
if (resRatio == screenRatio)
return;
double yratio;
switch(resRatio)
{
case 0: yratio = 4./3.; break;
case 1: yratio = 16./9.; break;
case 2: yratio = 16./10.; break;
case 3: yratio = 17./10.; break;
case 4: yratio = 5./4.; break;
case 6: yratio = 21./9.; break;
default: return;
}
double y = w/yratio;
if (y > h)
w = static_cast<int>(h * yratio);
else
h = static_cast<int>(y);
}
void IVideo::DumpAdapters ()
{
Printf("Multi-monitor support unavailable.\n");
}
CCMD(vid_listadapters)
{
if (Video != NULL)
Video->DumpAdapters();
}
DEFINE_GLOBAL(SmallFont)
DEFINE_GLOBAL(SmallFont2)
DEFINE_GLOBAL(BigFont)
DEFINE_GLOBAL(ConFont)
DEFINE_GLOBAL(IntermissionFont)
DEFINE_GLOBAL(CleanXfac)
DEFINE_GLOBAL(CleanYfac)
DEFINE_GLOBAL(CleanWidth)
DEFINE_GLOBAL(CleanHeight)
DEFINE_GLOBAL(CleanXfac_1)
DEFINE_GLOBAL(CleanYfac_1)
DEFINE_GLOBAL(CleanWidth_1)
DEFINE_GLOBAL(CleanHeight_1)
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