# HG changeset patch
# User koda
# Date 1280744646 -7200
# Node ID bbec1275e46f17809125218d38d49796bfb2cc53
# Parent  c247dee9e1c0cbf1754b8bbf41cc935cfa0d86f0
these were removed by mistake

diff -r c247dee9e1c0 -r bbec1275e46f hedgewars/uStore.pas
--- a/hedgewars/uStore.pas	Sat Jul 31 10:53:54 2010 +0200
+++ b/hedgewars/uStore.pas	Mon Aug 02 12:24:06 2010 +0200
@@ -39,7 +39,9 @@
     rotationQt: GLfloat;
     wScreen: LongInt;
     hScreen: LongInt;
-    
+    framel, framer, depthl, depthr: GLuint;
+    texl, texr: GLuint;
+
 procedure initModule;
 procedure freeModule;
 
@@ -801,6 +803,15 @@
     SDL_FreeSurface(MissionIcons);
     FreeTexture(ropeIconTex);
     FreeTexture(HHTexture);
+    if isStereoEnabled then
+    begin
+        glDeleteTextures(1, @texl);
+        glDeleteRenderbuffersEXT(1, @depthl);
+        glDeleteFramebuffersEXT(1, @framel);
+        glDeleteTextures(1, @texr);
+        glDeleteRenderbuffersEXT(1, @depthr);
+        glDeleteFramebuffersEXT(1, @framer)
+    end
 end;
 
 
@@ -1170,7 +1181,9 @@
 {$ENDIF}
     end;
 
-{$IFNDEF IPHONEOS}
+{$IFDEF IPHONEOS}
+    cGPUVendor:= gvApple;
+{$ELSE}
     if StrPos(Str2PChar(vendor), Str2PChar('nvidia')) <> nil then
         cGPUVendor:= gvNVIDIA
     else if StrPos(Str2PChar(vendor), Str2PChar('intel')) <> nil then
@@ -1178,8 +1191,43 @@
     else if StrPos(Str2PChar(vendor), Str2PChar('ati')) <> nil then
         cGPUVendor:= gvIntel;
 //SupportNPOTT:= glLoadExtension('GL_ARB_texture_non_power_of_two');
-{$ELSE}
-    cGPUVendor:= gvApple;
+
+    if isStereoEnabled then
+    begin
+        // prepare left and right frame buffers and associated textures
+        glLoadExtension('GL_EXT_framebuffer_object');
+
+        // left
+        glGenFramebuffersEXT(1, @framel);
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framel);
+        glGenRenderbuffersEXT(1, @depthl);
+        glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depthl);
+        glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, cScreenWidth, cScreenHeight);
+        glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, depthl);
+        glGenTextures(1, @texl);
+        glBindTexture(GL_TEXTURE_2D, texl);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8,  cScreenWidth, cScreenHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, nil);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, texl, 0);
+
+        // right
+        glGenFramebuffersEXT(1, @framer);
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framer);
+        glGenRenderbuffersEXT(1, @depthr);
+        glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depthr);
+        glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, cScreenWidth, cScreenHeight);
+        glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, depthr);
+        glGenTextures(1, @texr);
+        glBindTexture(GL_TEXTURE_2D, texr);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8,  cScreenWidth, cScreenHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, nil);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, texr, 0);
+
+        // reset
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0)
+    end;
 {$ENDIF}
 
 {$IFDEF DEBUGFILE}
diff -r c247dee9e1c0 -r bbec1275e46f hedgewars/uWorld.pas
--- a/hedgewars/uWorld.pas	Sat Jul 31 10:53:54 2010 +0200
+++ b/hedgewars/uWorld.pas	Mon Aug 02 12:24:06 2010 +0200
@@ -22,6 +22,7 @@
 interface
 uses SDLh, uGears, uConsts, uFloat, uRandom;
 
+type TRenderMode = (rmDefault, rmLeftEye, rmRightEye);
 
 var FollowGear: PGear;
     WindBarWidth: LongInt;
@@ -44,6 +45,7 @@
 
 procedure InitWorld;
 procedure DrawWorld(Lag: LongInt);
+procedure DrawWorldStereo(Lag: LongInt; RM: TRenderMode);
 procedure AddCaption(s: shortstring; Color: Longword; Group: TCapGroup);
 procedure ShowMission(caption, subcaption, text: ansistring; icon, time : LongInt);
 procedure HideMission;
@@ -71,6 +73,11 @@
     amSel: TAmmoType = amNothing;
     missionTex: PTexture;
     missionTimer: LongInt;
+    stereoDepth: GLfloat = 0;
+
+const cStereo_Sky     = 0.0750;
+      cStereo_Horizon = 0.0250;
+      cStereo_Water   = 0.0125;
 
 procedure InitWorld;
 var i, t: LongInt;
@@ -528,14 +535,7 @@
 
 
 procedure DrawWorld(Lag: LongInt);
-var i, t: LongInt;
-    r: TSDL_Rect;
-    tdx, tdy: Double;
-    grp: TCapGroup;
-    s: string[15];
-    highlight: Boolean;
-    offset, offsetX, offsetY, ScreenBottom: LongInt;
-    VertexBuffer: array [0..3] of TVertex2f;
+var cc: array[0..3] of GLfloat;
 begin
     if not isPaused then
     begin
@@ -564,6 +564,101 @@
     if not isPaused then
         MoveCamera;
 
+    if not isStereoEnabled then
+    begin
+        glClear(GL_COLOR_BUFFER_BIT);
+        DrawWorldStereo(Lag, rmDefault)
+    end
+    else
+    begin
+        // create left fb
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framel);
+        glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
+        DrawWorldStereo(Lag, rmLeftEye);
+
+        // create right fb
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framer);
+        glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
+        DrawWorldStereo(0, rmRightEye);
+
+        // detatch drawing from fbs
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+        glGetFloatv(GL_COLOR_CLEAR_VALUE, @cc);
+        glClearColor(0, 0, 0, 0);
+        glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
+        glClearColor(cc[0], cc[1], cc[2], cc[3]);
+        SetScale(cDefaultZoomLevel);
+
+        // enable gl stuff
+        glEnable(GL_TEXTURE_2D);
+        glEnable(GL_BLEND);
+        glBlendFunc(GL_ONE, GL_ONE);
+
+        // draw left frame
+        glBindTexture(GL_TEXTURE_2D, texl);
+        glColor3f(0.0, 1.0, 1.0);
+        glBegin(GL_QUADS);
+            glTexCoord2f(0.0, 0.0);
+            glVertex2d(cScreenWidth / -2, cScreenHeight);
+            glTexCoord2f(1.0, 0.0);
+            glVertex2d(cScreenWidth / 2, cScreenHeight);
+            glTexCoord2f(1.0, 1.0);
+            glVertex2d(cScreenWidth / 2, 0);
+            glTexCoord2f(0.0, 1.0);
+            glVertex2d(cScreenWidth / -2, 0);
+        glEnd();
+
+        // draw right frame
+        glBindTexture(GL_TEXTURE_2D, texr);
+        glColor3f(1.0, 0.0, 0.0);
+        glBegin(GL_QUADS);
+            glTexCoord2f(0.0, 0.0);
+            glVertex2d(cScreenWidth / -2, cScreenHeight);
+            glTexCoord2f(1.0, 0.0);
+            glVertex2d(cScreenWidth / 2, cScreenHeight);
+            glTexCoord2f(1.0, 1.0);
+            glVertex2d(cScreenWidth / 2, 0);
+            glTexCoord2f(0.0, 1.0);
+            glVertex2d(cScreenWidth / -2, 0);
+        glEnd();
+
+        // reset
+        glColor3f(1.0, 1.0, 1.0);
+        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+        SetScale(zoom);
+    end
+end;
+
+procedure ChangeDepth(rm: TRenderMode; d: GLfloat);
+begin
+    if rm = rmDefault then exit
+    else if rm = rmRightEye then d:= -d;
+    stereoDepth:= stereoDepth + d;
+    glMatrixMode(GL_PROJECTION);
+    glTranslatef(d, 0, 0);
+    glMatrixMode(GL_MODELVIEW)
+end;
+ 
+procedure ResetDepth(rm: TRenderMode);
+begin
+    if rm = rmDefault then exit;
+    glMatrixMode(GL_PROJECTION);
+    glTranslatef(-stereoDepth, 0, 0);
+    glMatrixMode(GL_MODELVIEW);
+    stereoDepth:= 0;
+end;
+ 
+procedure DrawWorldStereo(Lag: LongInt; RM: TRenderMode);
+var i, t: LongInt;
+    r: TSDL_Rect;
+    tdx, tdy: Double;
+    grp: TCapGroup;
+    s: string[15];
+    highlight: Boolean;
+    offset, offsetX, offsetY, screenBottom: LongInt;
+    scale: GLfloat;
+    VertexBuffer: array [0..3] of TVertex2f;
+begin
     if (cReducedQuality and rqNoBackground) = 0 then
     begin
         // Offsets relative to camera - spare them to wimpier cpus, no bg or flakes for them anyway
@@ -874,58 +969,65 @@
 offsetX:= 10;
 {$ENDIF}
 offsetY:= cOffsetY;
-inc(Frames);
+
+// don't increment fps when drawing the right frame
+if (RM = rmDefault) or (RM = rmLeftEye) then
+begin
+    inc(Frames);
 
-if cShowFPS or (GameType = gmtDemo) then inc(CountTicks, Lag);
-if (GameType = gmtDemo) and (CountTicks >= 1000) then
-   begin
-   i:=GameTicks div 1000;
-   t:= i mod 60;
-   s:= inttostr(t);
-   if t < 10 then s:= '0' + s;
-   i:= i div 60;
-   t:= i mod 60;
-   s:= inttostr(t) + ':' + s;
-   if t < 10 then s:= '0' + s;
-   s:= inttostr(i div 60) + ':' + s;
+    if cShowFPS or (GameType = gmtDemo) then
+        inc(CountTicks, Lag);
+    if (GameType = gmtDemo) and (CountTicks >= 1000) then
+    begin
+        i:=GameTicks div 1000;
+        t:= i mod 60;
+        s:= inttostr(t);
+        if t < 10 then s:= '0' + s;
+        i:= i div 60;
+        t:= i mod 60;
+        s:= inttostr(t) + ':' + s;
+        if t < 10 then s:= '0' + s;
+        s:= inttostr(i div 60) + ':' + s;
    
-   if timeTexture <> nil then
-        FreeTexture(timeTexture);
-    timeTexture:= nil;
+        if timeTexture <> nil then
+            FreeTexture(timeTexture);
+        timeTexture:= nil;
     
-   tmpSurface:= TTF_RenderUTF8_Blended(Fontz[fnt16].Handle, Str2PChar(s), cWhiteColorChannels);
-   tmpSurface:= doSurfaceConversion(tmpSurface);
-   timeTexture:= Surface2Tex(tmpSurface, false);
-   SDL_FreeSurface(tmpSurface)
-   end;
+        tmpSurface:= TTF_RenderUTF8_Blended(Fontz[fnt16].Handle, Str2PChar(s), cWhiteColorChannels);
+        tmpSurface:= doSurfaceConversion(tmpSurface);
+        timeTexture:= Surface2Tex(tmpSurface, false);
+        SDL_FreeSurface(tmpSurface)
+    end;
 
-if timeTexture <> nil then
-   DrawTexture((cScreenWidth shr 1) - 20 - timeTexture^.w - offsetY, offsetX + timeTexture^.h+5, timeTexture);
+    if timeTexture <> nil then
+        DrawTexture((cScreenWidth shr 1) - 20 - timeTexture^.w - offsetY, offsetX + timeTexture^.h+5, timeTexture);
 
-if cShowFPS then
-   begin
-   if CountTicks >= 1000 then
-      begin
-      FPS:= Frames;
-      Frames:= 0;
-      CountTicks:= 0;
-      s:= inttostr(FPS) + ' fps';
-      if fpsTexture <> nil then
-        FreeTexture(fpsTexture);
-    fpsTexture:= nil;
-      tmpSurface:= TTF_RenderUTF8_Blended(Fontz[fnt16].Handle, Str2PChar(s), cWhiteColorChannels);
-      tmpSurface:= doSurfaceConversion(tmpSurface);
-      fpsTexture:= Surface2Tex(tmpSurface, false);
-      SDL_FreeSurface(tmpSurface)
-      end;
-   if fpsTexture <> nil then
-      DrawTexture((cScreenWidth shr 1) - 60 - offsetY, offsetX, fpsTexture);
-   end;
+    if cShowFPS then
+    begin
+        if CountTicks >= 1000 then
+        begin
+            FPS:= Frames;
+            Frames:= 0;
+            CountTicks:= 0;
+            s:= inttostr(FPS) + ' fps';
+            if fpsTexture <> nil then
+                FreeTexture(fpsTexture);
+            fpsTexture:= nil;
+            tmpSurface:= TTF_RenderUTF8_Blended(Fontz[fnt16].Handle, Str2PChar(s), cWhiteColorChannels);
+            tmpSurface:= doSurfaceConversion(tmpSurface);
+            fpsTexture:= Surface2Tex(tmpSurface, false);
+            SDL_FreeSurface(tmpSurface)
+        end;
+        if fpsTexture <> nil then
+            DrawTexture((cScreenWidth shr 1) - 60 - offsetY, offsetX, fpsTexture);
+    end;
 
-if CountTicks >= 1000 then CountTicks:= 0;
+    if CountTicks >= 1000 then CountTicks:= 0;
 
-// lag warning (?)
-inc(SoundTimerTicks, Lag);
+    // lag warning (?)
+    inc(SoundTimerTicks, Lag);
+end;
+
 if SoundTimerTicks >= 50 then
    begin
    SoundTimerTicks:= 0;