X-Git-Url: http://git.tdb.fi/?p=libs%2Fvr.git;a=blobdiff_plain;f=source%2Fstereocombiner.cpp;h=ebb888ee6fe59ec6bd39446ebff00008b21380e4;hp=75c788997e770fa0f1a7340d03b578e969062d51;hb=c07c707c480f4e989caee17541187f08f136d216;hpb=c7e4d2226f16c8dfd9136eaa298fb0e6937ef125

diff --git a/source/stereocombiner.cpp b/source/stereocombiner.cpp
index 75c7889..ebb888e 100644
--- a/source/stereocombiner.cpp
+++ b/source/stereocombiner.cpp
@@ -1,8 +1,31 @@
 #include <algorithm>
+#include <msp/gl/meshbuilder.h>
 #include "stereocombiner.h"
 
 using namespace std;
 
+namespace {
+
+const char mirror_vs_source[] =
+	"uniform vec2 scale;\n"
+	"varying vec2 texcoord;\n"
+	"void main()\n"
+	"{\n"
+	"	gl_Position = vec4(gl_Vertex.xy, 0.0, 1.0);\n"
+	"	texcoord = gl_Vertex.xy*scale*0.5+0.5;\n"
+	"}";
+
+const char mirror_fs_source[] =
+	"uniform sampler2D texture;\n"
+	"varying vec2 texcoord;\n"
+	"void main()\n"
+	"{\n"
+	"	gl_FragColor = texture2D(texture, texcoord);\n"
+	"}";
+
+}
+
+
 namespace Msp {
 namespace VR {
 
@@ -10,7 +33,8 @@ StereoCombiner::StereoCombiner():
 	target_width(0),
 	target_height(0),
 	render_aspect(1.0f),
-	frustum_skew(0.0f)
+	frustum_skew(0.0f),
+	mirror(0)
 { }
 
 void StereoCombiner::configure_eye_frustums(const Frustum &left_frustum, const Frustum &right_frustum)
@@ -25,6 +49,28 @@ void StereoCombiner::configure_eye_frustums(const Frustum &left_frustum, const F
 	render_aspect = (inner+outer)/(vertical*2);
 }
 
+void StereoCombiner::set_mirroring(bool m)
+{
+	if(m && !mirror)
+		mirror = new MirrorView;
+	else if(!m && mirror)
+	{
+		delete mirror;
+		mirror = 0;
+	}
+}
+
+void StereoCombiner::render_mirror(const GL::Texture2D &tex) const
+{
+	if(!mirror)
+		return;
+
+	GL::Bind bind_tex(tex);
+	GL::Bind bind_shprog(mirror->shader);
+	mirror->shdata.apply();
+	mirror->mesh.draw();
+}
+
 
 StereoCombiner::Frustum::Frustum():
 	left(-1),
@@ -40,5 +86,21 @@ StereoCombiner::Frustum::Frustum(float l, float r, float b, float t):
 	top(t)
 { }
 
+
+StereoCombiner::MirrorView::MirrorView():
+	mesh(GL::VERTEX2),
+	shader(mirror_vs_source, mirror_fs_source)
+{
+	GL::MeshBuilder bld(mesh);
+	bld.begin(GL::TRIANGLE_STRIP);
+	bld.vertex(-1, 1);
+	bld.vertex(-1, -1);
+	bld.vertex(1, 1);
+	bld.vertex(1, -1);
+	bld.end();
+
+	shdata.uniform("scale", 0.5f, 0.5f);
+}
+
 } // namespace VR
 } // namespace Msp