X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=Source%2FStereo.cpp;h=8887a526c6b5faec3330f6a286e61ac4d4b6eb34;hb=c5dc3750efbc615b70917f19bb95cbd352cd00f6;hp=5c8be16dd298e68525f8e52b679ea470e57b639d;hpb=5c4dee6a92fa23796ada28e5e42dee7721230d3e;p=lugaru.git

diff --git a/Source/Stereo.cpp b/Source/Stereo.cpp
index 5c8be16..8887a52 100644
--- a/Source/Stereo.cpp
+++ b/Source/Stereo.cpp
@@ -1,3 +1,22 @@
+/*
+Copyright (C) 2003, 2010 - Wolfire Games
+Copyright (C) 2010-2016 - Lugaru contributors (see AUTHORS file)
+
+This file is part of Lugaru.
+
+Lugaru is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+Lugaru is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Lugaru.  If not, see <http://www.gnu.org/licenses/>.
+*/
 
 #include "Game.h"
 #include "Stereo.h"
@@ -6,97 +25,128 @@
 extern int kContextWidth;
 extern int kContextHeight;
 
-bool CanInitStereo(StereoMode mode) {
-	GLint stencilbits = 0;
-	
-	switch(mode) {
-		case stereoNone:
-			return true;
-			break;
-		case stereoAnaglyph:
-			return true;
-			break;
-		case stereoHorizontalInterlaced:
-		case stereoVerticalInterlaced:
-			glGetIntegerv(GL_STENCIL_BITS, &stencilbits);
-			if ( stencilbits < 1 ) {
-				fprintf(stderr, "Failed to get a stencil buffer, interlaced stereo not available.\n");
-				return false;
-			} else {
-				fprintf(stderr, "Stencil buffer has %i bits, good.\n", stencilbits);
-			}
-			return true;
-			break;
-		default:
-			return false;
-	}
+bool CanInitStereo(StereoMode mode)
+{
+    GLint stencilbits = 0;
+
+    switch (mode) {
+    case stereoNone:
+    case stereoAnaglyph:
+        return true;
+        break;
+    case stereoHorizontalInterlaced:
+    case stereoVerticalInterlaced:
+        glGetIntegerv(GL_STENCIL_BITS, &stencilbits);
+        if ( stencilbits < 1 ) {
+            fprintf(stderr, "Failed to get a stencil buffer, interlaced stereo not available.\n");
+            return false;
+        } else {
+            fprintf(stderr, "Stencil buffer has %i bits, good.\n", stencilbits);
+        }
+        return true;
+        break;
+    default:
+        return false;
+    }
 
 }
 
-void InitStereo(StereoMode mode) {
-	switch(mode) {
-		case stereoNone:
-			glDisable( GL_STENCIL_TEST);
-			return;
-		case stereoAnaglyph:
-			glDisable( GL_STENCIL_TEST);
-			return;
-		case stereoHorizontalInterlaced:
-		case stereoVerticalInterlaced:
-			
-			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);
-	}
-	
+void InitStereo(StereoMode mode)
+{
+    switch (mode) {
+    default:
+    case stereoNone:
+    case stereoAnaglyph:
+        glDisable(GL_STENCIL_TEST);
+        return;
+    case stereoHorizontalInterlaced:
+    case stereoVerticalInterlaced:
+        fprintf(stderr, "Screen width is %i, height is %i\n", kContextWidth, kContextHeight);
+
+        // Setup stencil buffer
+        glDisable( GL_DEPTH_TEST);
+        glDisable(GL_CULL_FACE);
+        glDisable(GL_LIGHTING);
+        glDisable(GL_TEXTURE_2D);
+
+        glEnable( GL_STENCIL_TEST);
+        glClearStencil(0);
+        glClear(  GL_STENCIL_BUFFER_BIT );
+        glStencilFunc(GL_ALWAYS, 0x1, 0x1);
+        glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
+
+        // Setup viewport
+        glViewport(0, 0, kContextWidth, kContextHeight);
+        glMatrixMode(GL_PROJECTION);
+        glPushMatrix();
+        glLoadIdentity();
+        glOrtho((GLdouble)0, (GLdouble)kContextWidth, (GLdouble)kContextHeight, 0, -1, 1);
+        glMatrixMode(GL_MODELVIEW);
+        glPushMatrix();
+        glLoadIdentity();
+        glColorMask( GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE );
+        glDisable(GL_LINE_SMOOTH);
+
+        // Add 0.5 to the coordinates, because OpenGL considers a pixel should be
+        // turned on when a line passes through the center of it.
+        if ( mode == stereoHorizontalInterlaced ) {
+            for (int y = 0; y < kContextHeight; y += 2) {
+                glBegin(GL_LINES);
+                glVertex3f(0.5, y + 0.5, 0);
+                glVertex3f(kContextWidth + 0.5, y + 0.5, 0);
+                glEnd();
+            }
+        } else {
+            for (int x = 0; x < kContextWidth; x += 2) {
+                glBegin(GL_LINES);
+                glVertex3f(x + 0.5, 0.5, 0);
+                glVertex3f(x + 0.5, kContextHeight + 0.5, 0);
+                glEnd();
+            }
+        }
+
+        glColorMask( GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
+
+        glPopMatrix();
+        glMatrixMode(GL_PROJECTION);
+        glPopMatrix();
+
+        glStencilFunc(GL_NOTEQUAL, 0x01, 0x01);
+        glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+        glEnable( GL_DEPTH_TEST);
+        glEnable(GL_CULL_FACE);
+        glEnable(GL_LIGHTING);
+        glEnable(GL_TEXTURE_2D);
+    }
+
 }
 
-const char* StereoModeName(StereoMode mode) {
-	switch(mode) {
-		case stereoNone:                 return "None"; break;
-		case stereoAnaglyph:             return "Anaglyph"; break;
-		case stereoHorizontalInterlaced: return "Horizontal interlacing"; break;
-		case stereoVerticalInterlaced:   return "Vertical interlacing"; break;
-		case stereoHorizontalSplit:      return "Horizontal split"; break;
-		case stereoVerticalSplit:        return "Vertical split"; break;
-		case stereoOpenGL:               return "OpenGL"; break;
-		default:                         return "(error)"; break; 
-	}
-}
\ No newline at end of file
+const std::string StereoModeName(StereoMode mode)
+{
+    switch (mode) {
+    case stereoNone:
+        return "None";
+        break;
+    case stereoAnaglyph:
+        return "Anaglyph";
+        break;
+    case stereoHorizontalInterlaced:
+        return "Horizontal interlacing";
+        break;
+    case stereoVerticalInterlaced:
+        return "Vertical interlacing";
+        break;
+    case stereoHorizontalSplit:
+        return "Horizontal split";
+        break;
+    case stereoVerticalSplit:
+        return "Vertical split";
+        break;
+    case stereoOpenGL:
+        return "OpenGL";
+        break;
+    default:
+        return "(error)";
+        break;
+    }
+}