Added new OpenGL ES wrapper

[d2df-sdl.git] / src / engine / e_graphics.pas

diff --git a/src/engine/e_graphics.pas b/src/engine/e_graphics.pas
index 891c65861f35d410caa42643337953059278cb23..d0f967230f0c31c94f7e575f926414ed9927bc72 100644 (file)
--- a/src/engine/e_graphics.pas
+++ b/src/engine/e_graphics.pas
@@ -19,11 +19,7 @@ unit e_graphics;
 interface
 
 uses
-{$IFDEF USE_NANOGL}
-  nanoGL,
-{$ELSE}
-  GL, GLExt,
-{$ENDIF}
+  {$INCLUDE ../nogl/noGLuses.inc}
   SysUtils, Classes, Math, e_log, e_texture, SDL2, MAPDEF, ImagingTypes, Imaging, ImagingUtility;
 
 type
@@ -95,7 +91,6 @@ function e_CreateTextureEx(FileName: string; var ID: DWORD; fX, fY, fWidth, fHei
 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);
 procedure e_RemoveAllTextures();
 
@@ -370,106 +365,6 @@ begin
  if Height <> nil then Height^ := e_Textures[ID].tx.Height;
 end;
 
-function e_GetTextureSize2(ID: DWORD): TRectWH;
-var
-  data: PChar;
-  x, y: Integer;
-  w, h: Word;
-  a: Boolean;
-  lastline: Integer;
-begin
- w := e_Textures[ID].tx.Width;
- h := e_Textures[ID].tx.Height;
-
- Result.Y := 0;
- Result.X := 0;
- Result.Width := w;
- Result.Height := h;
-
-{$IFNDEF USE_NANOGL} // FIXIT: nanoGL doesn't support glGetTexImage
- if e_NoGraphics then Exit;
-
- data := GetMemory(w*h*4);
- glEnable(GL_TEXTURE_2D);
- glBindTexture(GL_TEXTURE_2D, e_Textures[ID].tx.id);
- glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
-
- for y := h-1 downto 0 do
- begin
-  lastline := y;
-  a := True;
-
-  for x := 1 to w-4 do
-  begin
-   a := Byte((data+y*w*4+x*4+3)^) <> 0;
-   if a then Break;
-  end;
-
-  if a then
-  begin
-   Result.Y := h-lastline;
-   Break;
-  end;
- end;
-
- for y := 0 to h-1 do
- begin
-  lastline := y;
-  a := True;
-
-  for x := 1 to w-4 do
-  begin
-   a := Byte((data+y*w*4+x*4+3)^) <> 0;
-   if a then Break;
-  end;
-
-  if a then
-  begin
-   Result.Height := h-lastline-Result.Y;
-   Break;
-  end;
- end;
-
- for x := 0 to w-1 do
- begin
-  lastline := x;
-  a := True;
-
-  for y := 1 to h-4 do
-  begin
-   a := Byte((data+y*w*4+x*4+3)^) <> 0;
-   if a then Break;
-  end;
-
-  if a then
-  begin
-   Result.X := lastline+1;
-   Break;
-  end;
- end;
-
- for x := w-1 downto 0 do
- begin
-  lastline := x;
-  a := True;
-
-  for y := 1 to h-4 do
-  begin
-   a := Byte((data+y*w*4+x*4+3)^) <> 0;
-   if a then Break;
-  end;
-
-  if a then
-  begin
-   Result.Width := lastline-Result.X+1;
-   Break;
-  end;
- end;
-
- FreeMemory(data);
-{$ENDIF}
-end;
-
 procedure e_ResizeWindow(Width, Height: Integer);
 begin
   if Height = 0 then
@@ -958,8 +853,10 @@ end;
 procedure e_DrawQuad(X1, Y1, X2, Y2: Integer; Red, Green, Blue: Byte; Alpha: Byte = 0);
 var
   nX1, nY1, nX2, nY2: Integer;
+{$IFDEF USE_NANOGL}
+  v: array [0..15] of GLfloat;
+{$ENDIF}
 begin
-{$IFNDEF USE_NANOGL} // FIXIT: nanoGL doesn't support glBegin(GL_LINES)
   if e_NoGraphics then Exit;
   // Only top-left/bottom-right quad
   if X1 > X2 then
@@ -985,7 +882,34 @@ begin
   glDisable(GL_TEXTURE_2D);
   glColor4ub(Red, Green, Blue, 255-Alpha);
   glLineWidth(1);
+{$IFDEF USE_NANOGL}
+  nX1 := X1; nY1 := Y1;
+  nX2 := X2; nY2 := Y1;
+  e_LineCorrection(nX1, nY1, nX2, nY2);
+  v[0] := nX1; v[1] := nY1; v[2] := nX2; v[3] := nY2;
+
+  nX1 := X2; nY1 := Y1;
+  nX2 := X2; nY2 := Y2;
+  e_LineCorrection(nX1, nY1, nX2, nY2);
+  v[4] := nX1; v[5] := nY1; v[6] := nX2; v[7] := nY2;
+
+  nX1 := X2; nY1 := Y2;
+  nX2 := X1; nY2 := Y2;
+  e_LineCorrection(nX1, nY1, nX2, nY2);
+  v[8] := nX1; v[9] := nY1; v[10] := nX2; v[11] := nY2;
+
+  nX1 := X1; nY1 := Y2;
+  nX2 := X1; nY2 := Y1;
+  e_LineCorrection(nX1, nY1, nX2, nY2);
+  v[12] := nX1; v[13] := nY1; v[14] := nX2; v[15] := nY2;
 
+  glVertexPointer(2, GL_FLOAT, 0, @v[0]);
+  glEnableClientState(GL_VERTEX_ARRAY);
+  glDisableClientState(GL_COLOR_ARRAY);
+  glDisableClientState(GL_NORMAL_ARRAY);
+  glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+  glDrawArrays(GL_LINES, 0, 16);
+{$ELSE}
   glBegin(GL_LINES);
     nX1 := X1; nY1 := Y1;
     nX2 := X2; nY2 := Y1;
@@ -1011,11 +935,11 @@ begin
     glVertex2i(nX1, nY1);
     glVertex2i(nX2, nY2);
   glEnd();
+{$ENDIF}
 
   glColor4ub(e_Colors.R, e_Colors.G, e_Colors.B, 255);
 
   glDisable(GL_BLEND);
-{$ENDIF}
 end;
 
 procedure e_DrawFillQuad(X1, Y1, X2, Y2: Integer; Red, Green, Blue, Alpha: Byte;
@@ -1597,7 +1521,7 @@ begin
 
  with e_TextureFonts[id] do
  begin
-{$IF not DEFINED(USE_NANOGL)}
+{$IF not DEFINED(USE_NANOGL) and not DEFINED(USE_NOGL)}
   Base := glGenLists(XCount*YCount);
 {$ENDIF}
   TextureID := e_Textures[Tex].tx.id;
@@ -1609,7 +1533,7 @@ begin
   SPC := Space;
  end;
 
-{$IF not DEFINED(USE_NANOGL)}
+{$IF not DEFINED(USE_NANOGL) and not DEFINED(USE_NOGL)}
  glBindTexture(GL_TEXTURE_2D, e_Textures[Tex].tx.id);
  for loop1 := 0 to XCount*YCount-1 do
  begin
@@ -1641,13 +1565,13 @@ end;
 procedure e_TextureFontKill(FontID: DWORD);
 begin
   if e_NoGraphics then Exit;
-{$IF not DEFINED(USE_NANOGL)}
+{$IF not DEFINED(USE_NANOGL) and not DEFINED(USE_NOGL)}
   glDeleteLists(e_TextureFonts[FontID].Base, 256);
 {$ENDIF}
   e_TextureFonts[FontID].Base := 0;
 end;
 
-{$IFDEF USE_NANOGL}
+{$IF DEFINED(USE_NANOGL) or DEFINED(USE_NOGL)}
 procedure e_TextureFontDrawChar(ch: Char; FontID: DWORD);
   var
     index: Integer;
@@ -1701,7 +1625,7 @@ begin
   glBindTexture(GL_TEXTURE_2D, e_TextureFonts[FontID].TextureID);
   glEnable(GL_TEXTURE_2D);
   glTranslatef(x, y, 0);
-{$IFDEF USE_NANOGL}
+{$IF DEFINED(USE_NANOGL) or DEFINED(USE_NOGL)}
   e_TextureFontDrawString(Text, FontID);
 {$ELSE}
   glListBase(DWORD(Integer(e_TextureFonts[FontID].Base)-32));
@@ -1723,7 +1647,7 @@ begin
   begin
    glColor4ub(0, 0, 0, 128);
    glTranslatef(X+1, Y+1, 0);
-{$IFDEF USE_NANOGL}
+{$IF DEFINED(USE_NANOGL) or DEFINED(USE_NOGL)}
    e_TextureFontDrawChar(Ch, FontID);
 {$ELSE}
    glCallLists(1, GL_UNSIGNED_BYTE, @Ch);
@@ -1734,7 +1658,7 @@ begin
 
   glColor4ub(e_Colors.R, e_Colors.G, e_Colors.B, 255);
   glTranslatef(X, Y, 0);
-{$IFDEF USE_NANOGL}
+{$IF DEFINED(USE_NANOGL) or DEFINED(USE_NOGL)}
   e_TextureFontDrawChar(Ch, FontID);
 {$ELSE}
   glCallLists(1, GL_UNSIGNED_BYTE, @Ch);
@@ -1787,7 +1711,7 @@ begin
     glBindTexture(GL_TEXTURE_2D, e_TextureFonts[FontID].TextureID);
     glEnable(GL_TEXTURE_2D);
 
-{$IF not DEFINED(USE_NANOGL)}
+{$IF not DEFINED(USE_NANOGL) and not DEFINED(USE_NOGL)}
     glListBase(DWORD(Integer(e_TextureFonts[FontID].Base)-32));
 {$ENDIF}
 
@@ -1867,7 +1791,7 @@ begin
   glBindTexture(GL_TEXTURE_2D, e_TextureFonts[FontID].TextureID);
   glEnable(GL_TEXTURE_2D);
 
-{$IF not DEFINED(USE_NANOGL)}
+{$IF not DEFINED(USE_NANOGL) and not DEFINED(USE_NOGL)}
   glListBase(DWORD(Integer(e_TextureFonts[FontID].Base)-32));
 {$ENDIF}
 
@@ -1879,7 +1803,7 @@ begin
    glColor4ub(0, 0, 0, 128);
    glTranslatef(x+1, y+1, 0);
    glScalef(Scale, Scale, 0);
-{$IFDEF USE_NANOGL}
+{$IF DEFINED(USE_NANOGL) or DEFINED(USE_NOGL)}
    e_TextureFontDrawString(Text, FontID);
 {$ELSE}
    glCallLists(Length(Text), GL_UNSIGNED_BYTE, PChar(Text));
@@ -1891,7 +1815,7 @@ begin
   glColor4ub(Red, Green, Blue, 255);
   glTranslatef(x, y, 0);
   glScalef(Scale, Scale, 0);
-{$IFDEF USE_NANOGL}
+{$IF DEFINED(USE_NANOGL) or DEFINED(USE_NOGL)}
   e_TextureFontDrawString(Text, FontID);
 {$ELSE}
   glCallLists(Length(Text), GL_UNSIGNED_BYTE, PChar(Text));
@@ -1924,7 +1848,7 @@ begin
  for i := 0 to High(e_TextureFonts) do
   if e_TextureFonts[i].Base <> 0 then
   begin
-{$IFNDEF USE_NANOGL}
+{$IF not DEFINED(USE_NANOGL) and not DEFINED(USE_NOGL)}  
    glDeleteLists(e_TextureFonts[i].Base, 256);
 {$ENDIF}
    e_TextureFonts[i].Base := 0;