X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=Source%2FOpenGL_Windows.cpp;h=f118ce7a6810413cd863ddeca95e54504db72b6e;hb=44e4a5263469eb8e216bd6abfad3f0b5e2627d69;hp=37520284c8900ef45464d0fa6b24e74924c9e98f;hpb=bbf7582c00138ab38f84b6acf52e76175bfebb79;p=lugaru.git

diff --git a/Source/OpenGL_Windows.cpp b/Source/OpenGL_Windows.cpp
index 3752028..f118ce7 100644
--- a/Source/OpenGL_Windows.cpp
+++ b/Source/OpenGL_Windows.cpp
@@ -320,7 +320,12 @@ void ShutdownDSp ()
 
 void DrawGL (Game & game)
 {
-	game.DrawGLScene();
+	if ( stereomode == stereoNone ) {
+		game.DrawGLScene(stereoCenter);
+	} else {
+		game.DrawGLScene(stereoLeft);
+		game.DrawGLScene(stereoRight);
+	}
 }
 
 
@@ -923,7 +928,8 @@ Boolean SetUp (Game & game)
     SDL_ShowCursor(0);
 
     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
-
+    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 1);
+    
     if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
     {
         fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError());
@@ -972,7 +978,6 @@ Boolean SetUp (Game & game)
 	glDisable( GL_FOG);
 	glDisable( GL_LIGHTING);
 	glDisable( GL_LOGIC_OP);
-	glDisable( GL_STENCIL_TEST);
 	glDisable( GL_TEXTURE_1D);
 	glDisable( GL_TEXTURE_2D);
 	glPixelTransferi( GL_MAP_COLOR, GL_FALSE);
@@ -1014,6 +1019,56 @@ Boolean SetUp (Game & game)
 	game.newscreenwidth=screenwidth;
 	game.newscreenheight=screenheight;
 
+	GLint stencilbits = 0;
+	glGetIntegerv(GL_STENCIL_BITS, &stencilbits);
+	if ( stencilbits < 1 ) {
+		fprintf(stderr, "Failed to get a stencil buffer!\n");
+		SDL_Quit();
+		return false; 
+	}
+	
+	fprintf(stderr, "Stencil buffer has %i bits, good.\n", stencilbits);
+	fprintf(stderr, "Screen width is %i, height is %i\n", kContextWidth, kContextHeight);
+	
+	glEnable( GL_STENCIL_TEST);
+	glClearStencil(0);
+	glClear(  GL_STENCIL_BUFFER_BIT );
+	glStencilFunc(GL_ALWAYS, 0x1, 0x1);
+	glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
+	
+	
+	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+	glPixelStorei(GL_UNPACK_ROW_LENGTH, 3);
+	glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
+	glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+	glColorMask( 1.0, 1.0, 1.0, 1.0 );
+	char stencil[] = {64,127,255};
+	
+	glViewport(0,0, kContextWidth, kContextHeight);
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	glOrtho((GLdouble)0, (GLdouble)kContextWidth, (GLdouble)kContextHeight, 0, -1, 1);
+	glMatrixMode(GL_MODELVIEW);
+	glLoadIdentity();
+	
+	for(int y=0;y<kContextHeight;y+=2) {
+		
+		for(int x=0;x<kContextWidth;x++) {
+			glRasterPos2i(x, y);
+			glDrawPixels(1, 1, GL_RGB, GL_UNSIGNED_BYTE, &stencil);
+		}
+	}
+	
+	glStencilFunc(GL_NOTEQUAL, 0x01, 0x01);
+	glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+
+	// Something gets screwed up due to the changes above
+	// revert to default.
+	glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+	glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+	glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
+	glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+
 	game.InitGame();
 
 	return true;