index 43123121a942c5241c0d16fb2e8d8bad6aa2ca50..d7bced43a353957e88aac4426d93027eb75a7ae0 100644 (file)
+{$MODE DELPHI}
unit e_graphics;
interface
uses
- SysUtils, Math, e_log, e_textures, SDL2, GL, GLExt, MAPDEF;
+ SysUtils, Classes, Math, e_log, e_textures, SDL2, GL, GLExt, MAPDEF;
type
TMirrorType=(M_NONE, M_HORIZONTAL, M_VERTICAL);
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; var ID: DWORD): Boolean;
-function e_CreateTextureMemEx(pData: Pointer; var ID: DWORD; fX, fY, fWidth, fHeight: Word): Boolean;
+function e_CreateTextureMem(pData: Pointer; dataSize: LongInt; var ID: DWORD): Boolean;
+function e_CreateTextureMemEx(pData: Pointer; dataSize: LongInt; var ID: DWORD; fX, fY, fWidth, fHeight: Word): Boolean;
procedure e_GetTextureSize(ID: DWORD; Width, Height: PWord);
function e_GetTextureSize2(ID: DWORD): TRectWH;
procedure e_DeleteTexture(ID: DWORD);
function e_GetGamma(win: PSDL_Window): Byte;
procedure e_SetGamma(win: PSDL_Window;Gamma: Byte);
-procedure e_MakeScreenshot(FileName: string; Width, Height: Word);
+procedure e_MakeScreenshot(st: TStream; Width, Height: Word);
function _RGB(Red, Green, Blue: Byte): TRGB;
function _Point(X, Y: Integer): TPoint2i;
implementation
+uses
+ paszlib, crc, utils;
+
+
type
TTexture = record
//ID: DWORD;
e_Textures: array of TTexture = nil;
e_TextureFonts: array of TTextureFont = nil;
e_CharFonts: array of TCharFont;
- e_SavedTextures: array of TSavedTexture;
+ //e_SavedTextures: array of TSavedTexture;
//------------------------------------------------------------------
// Èíèöèàëèçèðóåò OpenGL
Result := True;
end;
-function e_CreateTextureMem(pData: Pointer; var ID: DWORD): Boolean;
+function e_CreateTextureMem(pData: Pointer; dataSize: LongInt; var ID: DWORD): Boolean;
var
find_id: DWORD;
fmt: Word;
find_id := FindTexture;
- if not LoadTextureMem(pData, 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].Width, e_Textures[find_id].Height, @fmt) then exit;
id := find_id;
e_Textures[id].Fmt := fmt;
Result := True;
end;
-function e_CreateTextureMemEx(pData: Pointer; var ID: DWORD; fX, fY, fWidth, fHeight: Word): Boolean;
+function e_CreateTextureMemEx(pData: Pointer; dataSize: LongInt; var ID: DWORD; fX, fY, fWidth, fHeight: Word): Boolean;
var
find_id: DWORD;
fmt: Word;
find_id := FindTexture();
- if not LoadTextureMemEx(pData, e_Textures[find_id].tx, fX, fY, fWidth, fHeight, @fmt) then exit;
+ 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;
Result.X := 0;
Result.Width := w;
Result.Height := h;
-
+
if e_NoGraphics then Exit;
-
+
data := GetMemory(w*h*4);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, e_Textures[ID].tx.id);
glPopMatrix();
end;
-procedure e_MakeScreenshot(FileName: String; Width, Height: Word);
-begin
- if e_NoGraphics then Exit;
-end;
-
-{type
- aRGB = Array [0..1] of TRGB;
- PaRGB = ^aRGB;
-
- TByteArray = Array [0..1] of Byte;
- PByteArray = ^TByteArray;
-
-var
- FILEHEADER: BITMAPFILEHEADER;
- INFOHEADER: BITMAPINFOHEADER;
- pixels: PByteArray;
- tmp: Byte;
- i: Integer;
- F: File of Byte;
-
-begin
- if (Width mod 4) > 0 then
- Width := Width + 4 - (Width mod 4);
-
- GetMem(pixels, Width*Height*3);
- glReadPixels(0, 0, Width, Height, GL_RGB, GL_UNSIGNED_BYTE, pixels);
-
- for i := 0 to Width * Height - 1 do
- with PaRGB(pixels)[i] do
- begin
- tmp := R;
- R := B;
- B := tmp;
- end;
-
- with FILEHEADER do
- begin
- bfType := $4D42; // "BM"
- bfSize := Width*Height*3 + SizeOf(BITMAPFILEHEADER) + SizeOf(BITMAPINFOHEADER);
- bfReserved1 := 0;
- bfReserved2 := 0;
- bfOffBits := SizeOf(BITMAPFILEHEADER) + SizeOf(BITMAPINFOHEADER);
- end;
-
- with INFOHEADER do
- begin
- biSize := SizeOf(BITMAPINFOHEADER);
- biWidth := Width;
- biHeight := Height;
- biPlanes := 1;
- biBitCount := 24;
- biCompression := 0;
- biSizeImage := Width*Height*3;
- biXPelsPerMeter := 0;
- biYPelsPerMeter := 0;
- biClrUsed := 0;
- biClrImportant := 0;
- end;
-
- AssignFile(F, FileName);
- Rewrite(F);
-
- BlockWrite(F, FILEHEADER, SizeOf(FILEHEADER));
- BlockWrite(F, INFOHEADER, SizeOf(INFOHEADER));
- BlockWrite(F, pixels[0], Width*Height*3);
-
- CloseFile(F);
-
- FreeMem(pixels);
-end;}
-
function e_GetGamma(win: PSDL_Window): Byte;
var
ramp: array [0..256*3-1] of Word;
Result.Bottom := B;
end;
+
+procedure e_MakeScreenshot (st: TStream; Width, Height: Word);
+var
+ pixels, obuf, scln, ps, pd: PByte;
+ obufsize: Integer;
+ dlen: Cardinal;
+ i, res: Integer;
+ sign: array [0..7] of Byte;
+ hbuf: array [0..12] of Byte;
+ crc: LongWord;
+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);
+
+ GetMem(pixels, Width*Height*3);
+ try
+ FillChar(pixels^, Width*Height*3, 0);
+ 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);
+ 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);
+ 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);
+ end;
+end;
+
+
end.