X-Git-Url: http://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Fengine%2Fe_graphics.pas;h=d3cb67e0d7e221191a3f367026351f06be8a0e4f;hb=d3e8419d14ad3579884892a89cf54445e37c0051;hp=d7bced43a353957e88aac4426d93027eb75a7ae0;hpb=8f815647c61a98e32b85066bf245b262694ac634;p=d2df-sdl.git

diff --git a/src/engine/e_graphics.pas b/src/engine/e_graphics.pas
index d7bced4..d3cb67e 100644
--- a/src/engine/e_graphics.pas
+++ b/src/engine/e_graphics.pas
@@ -1,10 +1,25 @@
+(* Copyright (C)  DooM 2D:Forever Developers
+ *
+ * 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/>.
+ *)
 {$MODE DELPHI}
 unit e_graphics;
 
 interface
 
 uses
-  SysUtils, Classes, Math, e_log, e_textures, SDL2, GL, GLExt, MAPDEF;
+  SysUtils, Classes, Math, e_log, e_textures, SDL2, GL, GLExt, MAPDEF, ImagingTypes, Imaging, ImagingUtility;
 
 type
   TMirrorType=(M_NONE, M_HORIZONTAL, M_VERTICAL);
@@ -63,6 +78,7 @@ procedure e_DrawQuad(X1, Y1, X2, Y2: Integer; Red, Green, Blue: Byte; Alpha: Byt
 procedure e_DrawFillQuad(X1, Y1, X2, Y2: Integer; Red, Green, Blue, Alpha: Byte;
                          Blending: TBlending = B_NONE);
 
+function e_CreateTextureImg (var img: TImageData; var ID: DWORD): Boolean;
 function e_CreateTexture(FileName: string; var ID: DWORD): Boolean;
 function e_CreateTextureEx(FileName: string; var ID: DWORD; fX, fY, fWidth, fHeight: Word): Boolean;
 function e_CreateTextureMem(pData: Pointer; dataSize: LongInt; var ID: DWORD): Boolean;
@@ -97,6 +113,9 @@ procedure e_TextureFontPrintFmt(X, Y: GLint; Text: string; FontID: DWORD; Shadow
 procedure e_TextureFontGetSize(ID: DWORD; var CharWidth, CharHeight: Byte);
 procedure e_RemoveAllTextureFont();
 
+function e_TextureFontCharWidth (ch: Char; FontID: DWORD): Integer;
+procedure e_TextureFontPrintCharEx (X, Y: Integer; Ch: Char; FontID: DWORD; Shadow: Boolean = False);
+
 procedure e_ReleaseEngine();
 procedure e_BeginRender();
 procedure e_Clear(Mask: TGLbitfield; Red, Green, Blue: Single); overload;
@@ -113,10 +132,13 @@ function _Point(X, Y: Integer): TPoint2i;
 function _Rect(X, Y: Integer; Width, Height: Word): TRectWH;
 function _TRect(L, T, R, B: LongInt): TRect;
 
+//function e_getTextGLId (ID: DWORD): GLuint;
 
 var
   e_Colors: TRGB;
   e_NoGraphics: Boolean = False;
+  e_FastScreenshots: Boolean = true; // it's REALLY SLOW with `false`
+
 
 implementation
 
@@ -126,11 +148,7 @@ uses
 
 type
   TTexture = record
-   //ID:     DWORD;
    tx:     GLTexture;
-   Width:  Word;
-   Height: Word;
-   Fmt:    Word;
   end;
 
   TTextureFont = record
@@ -165,6 +183,8 @@ var
   e_CharFonts: array of TCharFont;
   //e_SavedTextures: array of TSavedTexture;
 
+//function e_getTextGLId (ID: DWORD): GLuint; begin result := e_Textures[ID].tx.id; end;
+
 //------------------------------------------------------------------
 // Èíèöèàëèçèðóåò OpenGL
 //------------------------------------------------------------------
@@ -231,7 +251,7 @@ var
 begin
  if e_Textures <> nil then
  for i := 0 to High(e_Textures) do
-  if e_Textures[i].Width = 0 then
+  if e_Textures[i].tx.Width = 0 then
   begin
    Result := i;
    Exit;
@@ -263,11 +283,10 @@ begin
 
  find_id := FindTexture();
 
- if not LoadTexture(FileName, e_Textures[find_id].tx, e_Textures[find_id].Width,
-                    e_Textures[find_id].Height, @fmt) then Exit;
+ if not LoadTexture(FileName, e_Textures[find_id].tx, e_Textures[find_id].tx.Width,
+                    e_Textures[find_id].tx.Height, @fmt) then Exit;
 
  ID := find_id;
- e_Textures[ID].Fmt := fmt;
 
  Result := True;
 end;
@@ -283,10 +302,6 @@ begin
 
  if not LoadTextureEx(FileName, e_Textures[find_id].tx, fX, fY, fWidth, fHeight, @fmt) then exit;
 
- e_Textures[find_id].Width := fWidth;
- e_Textures[find_id].Height := fHeight;
- e_Textures[find_id].Fmt := fmt;
-
  ID := find_id;
 
  Result := True;
@@ -301,10 +316,9 @@ begin
 
  find_id := FindTexture;
 
- if not LoadTextureMem(pData, dataSize, e_Textures[find_id].tx, e_Textures[find_id].Width, e_Textures[find_id].Height, @fmt) then exit;
+ if not LoadTextureMem(pData, dataSize, e_Textures[find_id].tx, e_Textures[find_id].tx.Width, e_Textures[find_id].tx.Height, @fmt) then exit;
 
  id := find_id;
- e_Textures[id].Fmt := fmt;
 
  Result := True;
 end;
@@ -320,19 +334,27 @@ begin
 
  if not LoadTextureMemEx(pData, dataSize, e_Textures[find_id].tx, fX, fY, fWidth, fHeight, @fmt) then exit;
 
- e_Textures[find_id].Width := fWidth;
- e_Textures[find_id].Height := fHeight;
- e_Textures[find_id].Fmt := fmt;
-
  ID := find_id;
 
  Result := True;
 end;
 
+function e_CreateTextureImg (var img: TImageData; var ID: DWORD): Boolean;
+var
+  find_id: DWORD;
+  fmt, tw, th: Word;
+begin
+  result := false;
+  find_id := FindTexture();
+  if not LoadTextureImg(img, e_Textures[find_id].tx, tw, th, @fmt) then exit;
+  ID := find_id;
+  result := True;
+end;
+
 procedure e_GetTextureSize(ID: DWORD; Width, Height: PWord);
 begin
- if Width <> nil then Width^ := e_Textures[ID].Width;
- if Height <> nil then Height^ := e_Textures[ID].Height;
+ if Width <> nil then Width^ := e_Textures[ID].tx.Width;
+ if Height <> nil then Height^ := e_Textures[ID].tx.Height;
 end;
 
 function e_GetTextureSize2(ID: DWORD): TRectWH;
@@ -343,8 +365,8 @@ var
   a: Boolean;
   lastline: Integer;
 begin
- w := e_Textures[ID].Width;
- h := e_Textures[ID].Height;
+ w := e_Textures[ID].tx.Width;
+ h := e_Textures[ID].tx.Height;
 
  Result.Y := 0;
  Result.X := 0;
@@ -440,10 +462,23 @@ begin
   e_SetViewPort(0, 0, Width, Height);
 end;
 
+procedure drawTxQuad (x0, y0, w, h: Integer; u, v: single; Mirror: TMirrorType);
+var
+  x1, y1, tmp: Integer;
+begin
+  if (w < 1) or (h < 1) then exit;
+  x1 := x0+w;
+  y1 := y0+h;
+       if Mirror = M_HORIZONTAL then begin tmp := x1; x1 := x0; x0 := tmp; end
+  else if Mirror = M_VERTICAL then begin tmp := y1; y1 := y0; y0 := tmp; end;
+  glTexCoord2f(0, v); glVertex2i(x0, y0);
+  glTexCoord2f(0, 0); glVertex2i(x0, y1);
+  glTexCoord2f(u, 0); glVertex2i(x1, y1);
+  glTexCoord2f(u, v); glVertex2i(x1, y0);
+end;
+
 procedure e_Draw(ID: DWORD; X, Y: Integer; Alpha: Byte; AlphaChannel: Boolean;
                  Blending: Boolean; Mirror: TMirrorType = M_NONE);
-var
-  u, v: Single;
 begin
   if e_NoGraphics then Exit;
   glColor4ub(e_Colors.R, e_Colors.G, e_Colors.B, 255);
@@ -466,32 +501,36 @@ begin
   glBindTexture(GL_TEXTURE_2D, e_Textures[ID].tx.id);
   glBegin(GL_QUADS);
 
-  u := e_Textures[ID].tx.u;
-  v := e_Textures[ID].tx.v;
+  drawTxQuad(X, Y, e_Textures[id].tx.width, e_Textures[id].tx.height, e_Textures[ID].tx.u, e_Textures[ID].tx.v, Mirror);
 
+  //u := e_Textures[ID].tx.u;
+  //v := e_Textures[ID].tx.v;
+
+  {
   if Mirror = M_NONE then
     begin
-      glTexCoord2f(u,  0); glVertex2i(X + e_Textures[id].Width, Y);
+      glTexCoord2f(u,  0); glVertex2i(X + e_Textures[id].tx.Width, Y);
       glTexCoord2f(0,  0); glVertex2i(X,                        Y);
-      glTexCoord2f(0, -v); glVertex2i(X,                        Y + e_Textures[id].Height);
-      glTexCoord2f(u, -v); glVertex2i(X + e_Textures[id].Width, Y + e_Textures[id].Height);
+      glTexCoord2f(0, -v); glVertex2i(X,                        Y + e_Textures[id].tx.Height);
+      glTexCoord2f(u, -v); glVertex2i(X + e_Textures[id].tx.Width, Y + e_Textures[id].tx.Height);
     end
   else
     if Mirror = M_HORIZONTAL then
       begin
         glTexCoord2f(u,  0); glVertex2i(X,                        Y);
-        glTexCoord2f(0,  0); glVertex2i(X + e_Textures[id].Width, Y);
-        glTexCoord2f(0, -v); glVertex2i(X + e_Textures[id].Width, Y + e_Textures[id].Height);
-        glTexCoord2f(u, -v); glVertex2i(X,                        Y + e_Textures[id].Height);
+        glTexCoord2f(0,  0); glVertex2i(X + e_Textures[id].tx.Width, Y);
+        glTexCoord2f(0, -v); glVertex2i(X + e_Textures[id].tx.Width, Y + e_Textures[id].tx.Height);
+        glTexCoord2f(u, -v); glVertex2i(X,                        Y + e_Textures[id].tx.Height);
       end
     else
       if Mirror = M_VERTICAL then
       begin
-        glTexCoord2f(u, -v); glVertex2i(X + e_Textures[id].Width, Y);
+        glTexCoord2f(u, -v); glVertex2i(X + e_Textures[id].tx.Width, Y);
         glTexCoord2f(0, -v); glVertex2i(X,                        Y);
-        glTexCoord2f(0,  0); glVertex2i(X,                        Y + e_Textures[id].Height);
-        glTexCoord2f(u,  0); glVertex2i(X + e_Textures[id].Width, Y + e_Textures[id].Height);
+        glTexCoord2f(0,  0); glVertex2i(X,                        Y + e_Textures[id].tx.Height);
+        glTexCoord2f(u,  0); glVertex2i(X + e_Textures[id].tx.Width, Y + e_Textures[id].tx.Height);
       end;
+  }
 
   glEnd();
 
@@ -538,8 +577,6 @@ end;
 
 procedure e_DrawSizeMirror(ID: DWORD; X, Y: Integer; Alpha: Byte; AlphaChannel: Boolean;
                            Blending: Boolean; Width, Height: Word; Mirror: TMirrorType = M_NONE);
-var
-  u, v: Single;
 begin
   if e_NoGraphics then Exit;
   glColor4ub(e_Colors.R, e_Colors.G, e_Colors.B, 255);
@@ -561,34 +598,7 @@ begin
   glEnable(GL_TEXTURE_2D);
   glBindTexture(GL_TEXTURE_2D, e_Textures[ID].tx.id);
   glBegin(GL_QUADS);
-
-  u := e_Textures[ID].tx.u;
-  v := e_Textures[ID].tx.v;
-
-  if Mirror = M_NONE then
-    begin
-      glTexCoord2f(u,  0); glVertex2i(X + Width, Y);
-      glTexCoord2f(0,  0); glVertex2i(X,         Y);
-      glTexCoord2f(0, -v); glVertex2i(X,         Y + Height);
-      glTexCoord2f(u, -v); glVertex2i(X + Width, Y + Height);
-    end
-  else
-    if Mirror = M_HORIZONTAL then
-      begin
-        glTexCoord2f(u,  0); glVertex2i(X,         Y);
-        glTexCoord2f(0,  0); glVertex2i(X + Width, Y);
-        glTexCoord2f(0, -v); glVertex2i(X + Width, Y + Height);
-        glTexCoord2f(u, -v); glVertex2i(X,         Y + Height);
-      end
-    else
-      if Mirror = M_VERTICAL then
-      begin
-        glTexCoord2f(u, -v); glVertex2i(X + Width, Y);
-        glTexCoord2f(0, -v); glVertex2i(X,         Y);
-        glTexCoord2f(0,  0); glVertex2i(X,         Y + Height);
-        glTexCoord2f(u,  0); glVertex2i(X + Width, Y + Height);
-      end;
-
+  drawTxQuad(X, Y, Width, Height, e_Textures[ID].tx.u, e_Textures[ID].tx.v, Mirror);
   glEnd();
 
   glDisable(GL_BLEND);
@@ -626,8 +636,8 @@ begin
   glEnable(GL_TEXTURE_2D);
   glBindTexture(GL_TEXTURE_2D, e_Textures[ID].tx.id);
 
-  X2 := X + e_Textures[ID].Width * XCount;
-  Y2 := Y + e_Textures[ID].Height * YCount;
+  X2 := X + e_Textures[ID].tx.width * XCount;
+  Y2 := Y + e_Textures[ID].tx.height * YCount;
 
   //k8: this SHOULD work... i hope
   if (e_Textures[ID].tx.width = e_Textures[ID].tx.glwidth) and (e_Textures[ID].tx.height = e_Textures[ID].tx.glheight) then
@@ -672,10 +682,9 @@ end;
 
 procedure e_DrawAdv(ID: DWORD; X, Y: Integer; Alpha: Byte; AlphaChannel: Boolean;
                     Blending: Boolean; Angle: Single; RC: PPoint; Mirror: TMirrorType = M_NONE);
-var
-  u, v: Single;
 begin
   if e_NoGraphics then Exit;
+
   glColor4ub(e_Colors.R, e_Colors.G, e_Colors.B, 255);
 
   if (Alpha > 0) or (AlphaChannel) or (Blending) then
@@ -704,34 +713,7 @@ begin
   glBindTexture(GL_TEXTURE_2D, e_Textures[id].tx.id);
   glBegin(GL_QUADS);                           //0-1        1-1
                                                //00         10
-
-  u := e_Textures[ID].tx.u;
-  v := e_Textures[ID].tx.v;
-
-  if Mirror = M_NONE then
-    begin
-      glTexCoord2f(u,  0); glVertex2i(X + e_Textures[id].Width, Y);
-      glTexCoord2f(0,  0); glVertex2i(X,                        Y);
-      glTexCoord2f(0, -v); glVertex2i(X,                        Y + e_Textures[id].Height);
-      glTexCoord2f(u, -v); glVertex2i(X + e_Textures[id].Width, Y + e_Textures[id].Height);
-    end
-  else
-    if Mirror = M_HORIZONTAL then
-      begin
-        glTexCoord2f(u,  0); glVertex2i(X,                        Y);
-        glTexCoord2f(0,  0); glVertex2i(X + e_Textures[id].Width, Y);
-        glTexCoord2f(0, -v); glVertex2i(X + e_Textures[id].Width, Y + e_Textures[id].Height);
-        glTexCoord2f(u, -v); glVertex2i(X,                        Y + e_Textures[id].Height);
-      end
-    else
-      if Mirror = M_VERTICAL then
-      begin
-        glTexCoord2f(u, -v); glVertex2i(X + e_Textures[id].Width, Y);
-        glTexCoord2f(0, -v); glVertex2i(X,                        Y);
-        glTexCoord2f(0,  0); glVertex2i(X,                        Y + e_Textures[id].Height);
-        glTexCoord2f(u,  0); glVertex2i(X + e_Textures[id].Width, Y + e_Textures[id].Height);
-      end;
-
+  drawTxQuad(X, Y, e_Textures[id].tx.width, e_Textures[id].tx.height, e_Textures[ID].tx.u, e_Textures[ID].tx.v, Mirror);
   glEnd();
 
   if Angle <> 0 then
@@ -915,8 +897,8 @@ begin
   if not e_NoGraphics then
     glDeleteTextures(1, @e_Textures[ID].tx.id);
   e_Textures[ID].tx.id := 0;
-  e_Textures[ID].Width := 0;
-  e_Textures[ID].Height := 0;
+  e_Textures[ID].tx.Width := 0;
+  e_Textures[ID].tx.Height := 0;
 end;
 
 //------------------------------------------------------------------
@@ -929,7 +911,7 @@ begin
  if e_Textures = nil then Exit;
 
  for i := 0 to High(e_Textures) do
-  if e_Textures[i].Width <> 0 then e_DeleteTexture(i);
+  if e_Textures[i].tx.Width <> 0 then e_DeleteTexture(i);
  e_Textures := nil;
 end;
 
@@ -1381,8 +1363,8 @@ begin
  begin
   Base := glGenLists(XCount*YCount);
   TextureID := e_Textures[Tex].tx.id;
-  CharWidth := (e_Textures[Tex].Width div XCount)+Space;
-  CharHeight := e_Textures[Tex].Height div YCount;
+  CharWidth := (e_Textures[Tex].tx.Width div XCount)+Space;
+  CharHeight := e_Textures[Tex].tx.Height div YCount;
   XC := XCount;
   YC := YCount;
   Texture := Tex;
@@ -1398,18 +1380,18 @@ begin
   glNewList(e_TextureFonts[id].Base+loop1, GL_COMPILE);
    glBegin(GL_QUADS);
     glTexCoord2f(cx, 1.0-cy-1/YCount);
-    glVertex2d(0, e_Textures[Tex].Height div YCount);
+    glVertex2i(0, e_Textures[Tex].tx.Height div YCount);
 
     glTexCoord2f(cx+1/XCount, 1.0-cy-1/YCount);
-    glVertex2i(e_Textures[Tex].Width div XCount, e_Textures[Tex].Height div YCount);
+    glVertex2i(e_Textures[Tex].tx.Width div XCount, e_Textures[Tex].tx.Height div YCount);
 
     glTexCoord2f(cx+1/XCount, 1.0-cy);
-    glVertex2i(e_Textures[Tex].Width div XCount, 0);
+    glVertex2i(e_Textures[Tex].tx.Width div XCount, 0);
 
     glTexCoord2f(cx, 1.0-cy);
     glVertex2i(0, 0);
    glEnd();
-   glTranslated((e_Textures[Tex].Width div XCount)+Space, 0, 0);
+   glTranslated((e_Textures[Tex].tx.Width div XCount)+Space, 0, 0);
   glEndList();
  end;
 
@@ -1468,6 +1450,24 @@ begin
   glPopMatrix;
 end;
 
+procedure e_TextureFontPrintCharEx (X, Y: Integer; Ch: Char; FontID: DWORD; Shadow: Boolean = False);
+begin
+  glBindTexture(GL_TEXTURE_2D, e_TextureFonts[FontID].TextureID);
+  glEnable(GL_TEXTURE_2D);
+  //glListBase(DWORD(Integer(e_TextureFonts[FontID].Base)-32));
+
+  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+  glEnable(GL_BLEND);
+  e_TextureFontPrintChar(X, Y, Ch, FontID, Shadow);
+  glDisable(GL_TEXTURE_2D);
+  glDisable(GL_BLEND);
+end;
+
+function e_TextureFontCharWidth (ch: Char; FontID: DWORD): Integer;
+begin
+  result := e_TextureFonts[FontID].CharWidth;
+end;
+
 procedure e_TextureFontPrintFmt(X, Y: Integer; Text: string; FontID: DWORD; Shadow: Boolean = False);
 var
   a, TX, TY, len: Integer;
@@ -1659,17 +1659,18 @@ var
   pixels, obuf, scln, ps, pd: PByte;
   obufsize: Integer;
   dlen: Cardinal;
-  i, res: Integer;
+  i, x, y, res: Integer;
   sign: array [0..7] of Byte;
   hbuf: array [0..12] of Byte;
   crc: LongWord;
+  img: TImageData;
+  clr: TColor32Rec;
 begin
   if e_NoGraphics then Exit;
   obuf := nil;
 
   // first, extract and pack graphics data
-
-  if (Width mod 4) > 0 then Width := Width + 4 - (Width mod 4);
+  if (Width mod 4) > 0 then Width := Width+4-(Width mod 4);
 
   GetMem(pixels, Width*Height*3);
   try
@@ -1677,108 +1678,141 @@ begin
     glReadPixels(0, 0, Width, Height, GL_RGB, GL_UNSIGNED_BYTE, pixels);
     //e_WriteLog('PNG: pixels read', MSG_NOTIFY);
 
-    // create scanlines
-    GetMem(scln, (Width*3+1)*Height);
-    try
-      ps := pixels;
-      pd := scln;
-      Inc(ps, (Width*3)*(Height-1));
-      for i := 0 to Height-1 do
-      begin
-        pd^ := 0; // filter
-        Inc(pd);
-        Move(ps^, pd^, Width*3);
-        Dec(ps, Width*3);
-        Inc(pd, Width*3);
+    if e_FastScreenshots then
+    begin
+      // create scanlines
+      GetMem(scln, (Width*3+1)*Height);
+      try
+        ps := pixels;
+        pd := scln;
+        Inc(ps, (Width*3)*(Height-1));
+        for i := 0 to Height-1 do
+        begin
+          pd^ := 0; // filter
+          Inc(pd);
+          Move(ps^, pd^, Width*3);
+          Dec(ps, Width*3);
+          Inc(pd, Width*3);
+        end;
+      except
+        FreeMem(scln);
+        raise;
       end;
-    except
-      raise;
-    end;
-    FreeMem(pixels);
-    pixels := scln;
-
-    // pack it
-    obufsize := (Width*3+1)*Height*2;
-    GetMem(obuf, obufsize);
-    try
-      while true do
-      begin
-        dlen := obufsize;
-        res := compress2(Pointer(obuf), dlen, Pointer(pixels), (Width*3+1)*Height, 9);
-        if res = Z_OK then break;
-        if res <> Z_BUF_ERROR then raise Exception.Create('can''t pack data for PNG');
-        obufsize := obufsize*2;
-        FreeMem(obuf);
-        obuf := nil;
-        GetMem(obuf, obufsize);
+      FreeMem(pixels);
+      pixels := scln;
+
+      // pack it
+      obufsize := (Width*3+1)*Height*2;
+      GetMem(obuf, obufsize);
+      try
+        while true do
+        begin
+          dlen := obufsize;
+          res := compress2(Pointer(obuf), dlen, Pointer(pixels), (Width*3+1)*Height, 9);
+          if res = Z_OK then break;
+          if res <> Z_BUF_ERROR then raise Exception.Create('can''t pack data for PNG');
+          obufsize := obufsize*2;
+          FreeMem(obuf);
+          obuf := nil;
+          GetMem(obuf, obufsize);
+        end;
+        //e_WriteLog(Format('PNG: pixels compressed from %d to %d', [Integer(Width*Height*3), Integer(dlen)]), MSG_NOTIFY);
+
+        // now write PNG
+
+        // signature
+        sign[0] := 137;
+        sign[1] := 80;
+        sign[2] := 78;
+        sign[3] := 71;
+        sign[4] := 13;
+        sign[5] := 10;
+        sign[6] := 26;
+        sign[7] := 10;
+        st.writeBuffer(sign, 8);
+        //e_WriteLog('PNG: signature written', MSG_NOTIFY);
+
+        // header
+        writeIntBE(st, LongWord(13));
+        sign[0] := 73;
+        sign[1] := 72;
+        sign[2] := 68;
+        sign[3] := 82;
+        st.writeBuffer(sign, 4);
+        crc := crc32(0, @sign, 4);
+        hbuf[0] := 0;
+        hbuf[1] := 0;
+        hbuf[2] := (Width shr 8) and $ff;
+        hbuf[3] := Width and $ff;
+        hbuf[4] := 0;
+        hbuf[5] := 0;
+        hbuf[6] := (Height shr 8) and $ff;
+        hbuf[7] := Height and $ff;
+        hbuf[8] := 8; // bit depth
+        hbuf[9] := 2; // RGB
+        hbuf[10] := 0; // compression method
+        hbuf[11] := 0; // filter method
+        hbuf[12] := 0; // no interlace
+        crc := crc32(crc, @hbuf, 13);
+        st.writeBuffer(hbuf, 13);
+        writeIntBE(st, crc);
+        //e_WriteLog('PNG: header written', MSG_NOTIFY);
+
+        // image data
+        writeIntBE(st, LongWord(dlen));
+        sign[0] := 73;
+        sign[1] := 68;
+        sign[2] := 65;
+        sign[3] := 84;
+        st.writeBuffer(sign, 4);
+        crc := crc32(0, @sign, 4);
+        crc := crc32(crc, obuf, dlen);
+        st.writeBuffer(obuf^, dlen);
+        writeIntBE(st, crc);
+        //e_WriteLog('PNG: image data written', MSG_NOTIFY);
+
+        // image data end
+        writeIntBE(st, LongWord(0));
+        sign[0] := 73;
+        sign[1] := 69;
+        sign[2] := 78;
+        sign[3] := 68;
+        st.writeBuffer(sign, 4);
+        crc := crc32(0, @sign, 4);
+        writeIntBE(st, crc);
+        //e_WriteLog('PNG: end marker written', MSG_NOTIFY);
+      finally
+        if obuf <> nil then FreeMem(obuf);
+      end;
+    end
+    else
+    begin
+      Imaging.SetOption(ImagingPNGCompressLevel, 9);
+      Imaging.SetOption(ImagingPNGPreFilter, 6);
+      InitImage(img);
+      try
+        NewImage(Width, Height, TImageFormat.ifR8G8B8, img);
+        ps := pixels;
+        //writeln(stderr, 'moving pixels...');
+        for y := Height-1 downto 0 do
+        begin
+          for x := 0 to Width-1 do
+          begin
+            clr.r := ps^; Inc(ps);
+            clr.g := ps^; Inc(ps);
+            clr.b := ps^; Inc(ps);
+            clr.a := 255;
+            SetPixel32(img, x, y, clr);
+          end;
+        end;
+        GlobalMetadata.ClearMetaItems();
+        GlobalMetadata.ClearMetaItemsForSaving();
+        //writeln(stderr, 'compressing image...');
+        if not SaveImageToStream('png', st, img) then raise Exception.Create('screenshot writing error');
+        //writeln(stderr, 'done!');
+      finally
+        FreeImage(img);
       end;
-      //e_WriteLog(Format('PNG: pixels compressed from %d to %d', [Integer(Width*Height*3), Integer(dlen)]), MSG_NOTIFY);
-
-      // now write PNG
-
-      // signature
-      sign[0] := 137;
-      sign[1] := 80;
-      sign[2] := 78;
-      sign[3] := 71;
-      sign[4] := 13;
-      sign[5] := 10;
-      sign[6] := 26;
-      sign[7] := 10;
-      st.writeBuffer(sign, 8);
-      //e_WriteLog('PNG: signature written', MSG_NOTIFY);
-
-      // header
-      writeIntBE(st, LongWord(13));
-      sign[0] := 73;
-      sign[1] := 72;
-      sign[2] := 68;
-      sign[3] := 82;
-      st.writeBuffer(sign, 4);
-      crc := crc32(0, @sign, 4);
-      hbuf[0] := 0;
-      hbuf[1] := 0;
-      hbuf[2] := (Width shr 8) and $ff;
-      hbuf[3] := Width and $ff;
-      hbuf[4] := 0;
-      hbuf[5] := 0;
-      hbuf[6] := (Height shr 8) and $ff;
-      hbuf[7] := Height and $ff;
-      hbuf[8] := 8; // bit depth
-      hbuf[9] := 2; // RGB
-      hbuf[10] := 0; // compression method
-      hbuf[11] := 0; // filter method
-      hbuf[12] := 0; // no interlace
-      crc := crc32(crc, @hbuf, 13);
-      st.writeBuffer(hbuf, 13);
-      writeIntBE(st, crc);
-      //e_WriteLog('PNG: header written', MSG_NOTIFY);
-
-      // image data
-      writeIntBE(st, LongWord(dlen));
-      sign[0] := 73;
-      sign[1] := 68;
-      sign[2] := 65;
-      sign[3] := 84;
-      st.writeBuffer(sign, 4);
-      crc := crc32(0, @sign, 4);
-      crc := crc32(crc, obuf, dlen);
-      st.writeBuffer(obuf^, dlen);
-      writeIntBE(st, crc);
-      //e_WriteLog('PNG: image data written', MSG_NOTIFY);
-
-      // image data end
-      writeIntBE(st, LongWord(0));
-      sign[0] := 73;
-      sign[1] := 69;
-      sign[2] := 78;
-      sign[3] := 68;
-      st.writeBuffer(sign, 4);
-      crc := crc32(0, @sign, 4);
-      writeIntBE(st, crc);
-      //e_WriteLog('PNG: end marker written', MSG_NOTIFY);
-    finally
-      if obuf <> nil then FreeMem(obuf);
     end;
   finally
     FreeMem(pixels);