Added support OpenGL ES 1.1 through nanoGL (have some bugs) and fix build for ARM

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

diff --git a/src/engine/e_graphics.pas b/src/engine/e_graphics.pas
index 467994f5fdd0869eb031d10b31afbb2efd8bda8e..99d63e3a3fa22c9dff4a07fe26bd0c4e6eaa6146 100644 (file)
--- a/src/engine/e_graphics.pas
+++ b/src/engine/e_graphics.pas
@@ -1,4 +1,4 @@
-(* Copyright (C)  DooM 2D:Forever Developers
+(* 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
@@ -19,11 +19,16 @@ unit e_graphics;
 interface
 
 uses
-  SysUtils, Classes, Math, e_log, e_texture, SDL2, GL, GLExt, MAPDEF, ImagingTypes, Imaging, ImagingUtility;
+{$IFDEF USE_NANOGL}
+  nanoGL,
+{$ELSE}
+  GL, GLExt,
+{$ENDIF}
+  SysUtils, Classes, Math, e_log, e_texture, SDL2, MAPDEF, ImagingTypes, Imaging, ImagingUtility;
 
 type
-  TMirrorType=(M_NONE, M_HORIZONTAL, M_VERTICAL);
-  TBlending=(B_NONE, B_BLEND, B_FILTER, B_INVERT);
+  TMirrorType=(None, Horizontal, Vertical);
+  TBlending=(None, Blend, Filter, Invert);
 
   TPoint2i = record
     X, Y: Integer;
@@ -60,13 +65,13 @@ procedure e_SetViewPort(X, Y, Width, Height: Word);
 procedure e_ResizeWindow(Width, Height: Integer);
 
 procedure e_Draw(ID: DWORD; X, Y: Integer; Alpha: Byte; AlphaChannel: Boolean;
-                 Blending: Boolean; Mirror: TMirrorType = M_NONE);
+                 Blending: Boolean; Mirror: TMirrorType = TMirrorType.None);
 procedure e_DrawAdv(ID: DWORD; X, Y: Integer; Alpha: Byte; AlphaChannel: Boolean;
-                    Blending: Boolean; Angle: Single; RC: PDFPoint; Mirror: TMirrorType = M_NONE);
+                    Blending: Boolean; Angle: Single; RC: PDFPoint; Mirror: TMirrorType = TMirrorType.None);
 procedure e_DrawSize(ID: DWORD; X, Y: Integer; Alpha: Byte; AlphaChannel: Boolean;
-                     Blending: Boolean; Width, Height: Word; Mirror: TMirrorType = M_NONE);
+                     Blending: Boolean; Width, Height: Word; Mirror: TMirrorType = TMirrorType.None);
 procedure e_DrawSizeMirror(ID: DWORD; X, Y: Integer; Alpha: Byte; AlphaChannel: Boolean;
-                           Blending: Boolean; Width, Height: Word; Mirror: TMirrorType = M_NONE);
+                           Blending: Boolean; Width, Height: Word; Mirror: TMirrorType = TMirrorType.None);
 
 procedure e_DrawFill(ID: DWORD; X, Y: Integer; XCount, YCount: Word; Alpha: Integer;
                      AlphaChannel: Boolean; Blending: Boolean; ambientBlendMode: Boolean=false);
@@ -80,7 +85,7 @@ procedure e_DrawPoint(Size: Byte; X, Y: Integer; Red, Green, Blue: Byte);
 procedure e_DrawLine(Width: Byte; X1, Y1, X2, Y2: Integer; Red, Green, Blue: Byte; Alpha: Byte = 0);
 procedure e_DrawQuad(X1, Y1, X2, Y2: Integer; Red, Green, Blue: Byte; Alpha: Byte = 0);
 procedure e_DrawFillQuad(X1, Y1, X2, Y2: Integer; Red, Green, Blue, Alpha: Byte;
-                         Blending: TBlending = B_NONE);
+                         Blending: TBlending = TBlending.None);
 procedure e_DarkenQuad (x0, y0, x1, y1: Integer; a: Integer);
 procedure e_DarkenQuadWH (x, y, w, h: Integer; a: Integer);
 
@@ -286,7 +291,7 @@ var
 begin
  Result := False;
 
- e_WriteLog('Loading texture from '+FileName, MSG_NOTIFY);
+ e_WriteLog('Loading texture from '+FileName, TMsgType.Notify);
 
  find_id := FindTexture();
 
@@ -380,6 +385,7 @@ begin
  Result.Width := w;
  Result.Height := h;
 
+{$IFNDEF USE_NANOGL}
  if e_NoGraphics then Exit;
 
  data := GetMemory(w*h*4);
@@ -460,6 +466,7 @@ begin
  end;
 
  FreeMemory(data);
+{$ENDIF USE_NANOGL}
 end;
 
 procedure e_ResizeWindow(Width, Height: Integer);
@@ -476,8 +483,8 @@ 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;
+       if Mirror = TMirrorType.Horizontal then begin tmp := x1; x1 := x0; x0 := tmp; end
+  else if Mirror = TMirrorType.Vertical then begin tmp := y1; y1 := y0; y0 := tmp; end;
   //HACK: make texture one pixel shorter, so it won't wrap
   if (g_dbg_scale <> 1.0) then
   begin
@@ -491,7 +498,7 @@ begin
 end;
 
 procedure e_Draw(ID: DWORD; X, Y: Integer; Alpha: Byte; AlphaChannel: Boolean;
-                 Blending: Boolean; Mirror: TMirrorType = M_NONE);
+                 Blending: Boolean; Mirror: TMirrorType = TMirrorType.None);
 begin
   if e_NoGraphics then Exit;
   glColor4ub(e_Colors.R, e_Colors.G, e_Colors.B, 255);
@@ -551,7 +558,7 @@ begin
 end;
 
 procedure e_DrawSize(ID: DWORD; X, Y: Integer; Alpha: Byte; AlphaChannel: Boolean;
-                     Blending: Boolean; Width, Height: Word; Mirror: TMirrorType = M_NONE);
+                     Blending: Boolean; Width, Height: Word; Mirror: TMirrorType = TMirrorType.None);
 var
   u, v: Single;
 begin
@@ -589,7 +596,7 @@ begin
 end;
 
 procedure e_DrawSizeMirror(ID: DWORD; X, Y: Integer; Alpha: Byte; AlphaChannel: Boolean;
-                           Blending: Boolean; Width, Height: Word; Mirror: TMirrorType = M_NONE);
+                           Blending: Boolean; Width, Height: Word; Mirror: TMirrorType = TMirrorType.None);
 begin
   if e_NoGraphics then Exit;
   glColor4ub(e_Colors.R, e_Colors.G, e_Colors.B, 255);
@@ -867,7 +874,7 @@ end;
 
 
 procedure e_DrawAdv(ID: DWORD; X, Y: Integer; Alpha: Byte; AlphaChannel: Boolean;
-                    Blending: Boolean; Angle: Single; RC: PDFPoint; Mirror: TMirrorType = M_NONE);
+                    Blending: Boolean; Angle: Single; RC: PDFPoint; Mirror: TMirrorType = TMirrorType.None);
 begin
   if e_NoGraphics then Exit;
 
@@ -1009,21 +1016,21 @@ begin
 end;
 
 procedure e_DrawFillQuad(X1, Y1, X2, Y2: Integer; Red, Green, Blue, Alpha: Byte;
-                         Blending: TBlending = B_NONE);
+                         Blending: TBlending = TBlending.None);
 begin
   if e_NoGraphics then Exit;
-  if (Alpha > 0) or (Blending <> B_NONE) then
+  if (Alpha > 0) or (Blending <> TBlending.None) then
     glEnable(GL_BLEND)
   else
     glDisable(GL_BLEND);
 
-  if Blending = B_BLEND then
+  if Blending = TBlending.Blend then
     glBlendFunc(GL_SRC_ALPHA, GL_ONE)
   else
-    if Blending = B_FILTER then
+    if Blending = TBlending.Filter then
       glBlendFunc(GL_DST_COLOR, GL_SRC_COLOR)
     else
-      if Blending = B_INVERT then
+      if Blending = TBlending.Invert then
         glBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ZERO)
       else
         if Alpha > 0 then
@@ -1232,7 +1239,7 @@ function e_CharFont_Create(sp: ShortInt=0): DWORD;
 var
   i, id: DWORD;
 begin
- e_WriteLog('Creating CharFont...', MSG_NOTIFY);
+ e_WriteLog('Creating CharFont...', TMsgType.Notify);
 
  id := DWORD(-1);
 
@@ -1447,11 +1454,12 @@ end;
 procedure e_CharFont_GetSizeFmt(FontID: DWORD; Text: string; var w, h: Word);
 var
   a, lines, len: Integer;
-  h2, w2: Word;
+  h2, w2, tw, th: Word;
 begin
   w2 := 0;
-  w := 0;
-  h := 0;
+  h2 := 0;
+  tw := 0;
+  th := 0;
 
   if Text = '' then Exit;
   if e_CharFonts = nil then Exit;
@@ -1467,29 +1475,26 @@ begin
       if Text[a] = #10 then
       begin
         Inc(lines);
-        if w2 > w then
-        begin
-          w := w2;
-          w2 := 0;
-        end;
-        continue;
-      end
-      else if Text[a] in [#1, #2, #3, #4, #18, #19, #20, #21] then
+        if w2 > tw then tw := w2;
+        w2 := 0;
         continue;
+      end;
 
       with Chars[Ord(Text[a])] do
-      if TextureID <> -1 then
-      begin
-        w2 := w2 + Width + IfThen(a = len, 0, Space);
-        e_GetTextureSize(TextureID, nil, @h2);
-        if h2 > h then h := h2;
-      end;
+        if TextureID <> -1 then
+        begin
+          w2 := w2 + Width + IfThen(a = len, 0, Space);
+          e_GetTextureSize(TextureID, nil, @h2);
+          if h2 > th then th := h2;
+        end;
     end;
   end;
 
-  if w2 > w then
-    w := w2;
-  h := h * lines;
+  if w2 > tw then
+    tw := w2;
+
+  w := tw;
+  h := th * lines;
 end;
 
 function e_CharFont_GetMaxWidth(FontID: DWORD): Word;
@@ -1555,7 +1560,7 @@ var
   i, id: DWORD;
 begin
  if e_NoGraphics then Exit;
- e_WriteLog('Creating texture font...', MSG_NOTIFY);
+ e_WriteLog('Creating texture font...', TMsgType.Notify);
 
  id := DWORD(-1);
 
@@ -1573,6 +1578,7 @@ begin
   id := High(e_TextureFonts);
  end;
 
+{$IFNDEF USE_NANOGL}
  with e_TextureFonts[id] do
  begin
   Base := glGenLists(XCount*YCount);
@@ -1608,6 +1614,7 @@ begin
    glTranslated((e_Textures[Tex].tx.Width div XCount)+Space, 0, 0);
   glEndList();
  end;
+{$ENDIF}
 
  FontID := id;
 end;
@@ -1615,7 +1622,9 @@ end;
 procedure e_TextureFontKill(FontID: DWORD);
 begin
   if e_NoGraphics then Exit;
+{$IFNDEF USE_NANOGL}
   glDeleteLists(e_TextureFonts[FontID].Base, 256);
+{$ENDIF}
   e_TextureFonts[FontID].Base := 0;
 end;
 
@@ -1630,6 +1639,7 @@ begin
 
   glColor4ub(e_Colors.R, e_Colors.G, e_Colors.B, 255);
 
+{$IFNDEF USE_NANOGL}
   glPushMatrix;
   glBindTexture(GL_TEXTURE_2D, e_TextureFonts[FontID].TextureID);
   glEnable(GL_TEXTURE_2D);
@@ -1638,6 +1648,7 @@ begin
   glCallLists(Length(Text), GL_UNSIGNED_BYTE, PChar(Text));
   glDisable(GL_TEXTURE_2D);
   glPopMatrix;
+{$ENDIF}
 
   glDisable(GL_BLEND);
 end;
@@ -1648,6 +1659,7 @@ begin
   if e_NoGraphics then Exit;
   glPushMatrix;
 
+{$IFNDEF USE_NANOGL}
   if Shadow then
   begin
    glColor4ub(0, 0, 0, 128);
@@ -1660,6 +1672,7 @@ begin
   glColor4ub(e_Colors.R, e_Colors.G, e_Colors.B, 255);
   glTranslated(X, Y, 0);
   glCallLists(1, GL_UNSIGNED_BYTE, @Ch);
+{$ENDIF}
 
   glPopMatrix;
 end;
@@ -1682,7 +1695,7 @@ begin
   result := e_TextureFonts[FontID].CharWidth;
 end;
 
-procedure e_TextureFontPrintFmt(X, Y: Integer; Text: string; FontID: DWORD; Shadow: Boolean = False);
+procedure e_TextureFontPrintFmt(X, Y: GLint; Text: string; FontID: DWORD; Shadow: Boolean = False);
 var
   a, TX, TY, len: Integer;
   tc, c: TRGB;
@@ -1703,6 +1716,7 @@ begin
 
   w := e_TextureFonts[FontID].CharWidth;
 
+{$IFNDEF USE_NANOGL}
   with e_TextureFonts[FontID] do
   begin
     glBindTexture(GL_TEXTURE_2D, e_TextureFonts[FontID].TextureID);
@@ -1773,6 +1787,7 @@ begin
     glDisable(GL_TEXTURE_2D);
     glDisable(GL_BLEND);
   end;
+{$ENDIF}
 end;
 
 procedure e_TextureFontPrintEx(X, Y: GLint; Text: string; FontID: DWORD; Red, Green,
@@ -1781,6 +1796,7 @@ begin
   if e_NoGraphics then Exit;
   if Text = '' then Exit;
 
+{$IFNDEF USE_NANOGL}
   glPushMatrix;
   glBindTexture(GL_TEXTURE_2D, e_TextureFonts[FontID].TextureID);
   glEnable(GL_TEXTURE_2D);
@@ -1808,6 +1824,7 @@ begin
   glPopMatrix;
   glColor3ub(e_Colors.R, e_Colors.G, e_Colors.B);
   glDisable(GL_BLEND);
+{$ENDIF}
 end;
 
 procedure e_TextureFontGetSize(ID: DWORD; out CharWidth, CharHeight: Byte);
@@ -1831,7 +1848,9 @@ begin
  for i := 0 to High(e_TextureFonts) do
   if e_TextureFonts[i].Base <> 0 then
   begin
+{$IFNDEF USE_NANOGL}
    glDeleteLists(e_TextureFonts[i].Base, 256);
+{$ENDIF}
    e_TextureFonts[i].Base := 0;
   end;