X-Git-Url: http://git.tdb.fi/?p=libs%2Fvr.git;a=blobdiff_plain;f=source%2Fstereoview.cpp;h=73be19c4527a420aacad992148a56ac25573c2cf;hp=9a4b0e0c49dad965c6100d2847605bd54663bd55;hb=23a6e642715fab2f275a2015ea079137cb31036d;hpb=43579020c5709b589b2404414c489b0e6be3227d

diff --git a/source/stereoview.cpp b/source/stereoview.cpp
index 9a4b0e0..73be19c 100644
--- a/source/stereoview.cpp
+++ b/source/stereoview.cpp
@@ -1,90 +1,110 @@
-#include "renderer.h"
+#include <msp/gl/renderer.h>
+#include "headtrackingcamera.h"
 #include "stereocombiner.h"
 #include "stereoview.h"
 
 using namespace std;
 
 namespace Msp {
-namespace GL {
-
-StereoView::StereoView(unsigned w, unsigned h, const Camera &c, const Renderable &r, const StereoCombiner &m):
-	width(w),
-	height(h),
-	base_camera(c),
-	renderable(r),
-	combiner(0)
+namespace VR {
+
+StereoView::StereoView(const StereoCombiner &c, const GL::Camera &a):
+	combiner(c),
+	base_camera(a),
+	head_camera(0)
+{
+	init();
+}
+
+StereoView::StereoView(const StereoCombiner &c, HeadTrackingCamera &a):
+	combiner(c),
+	base_camera(a),
+	head_camera(&a)
 {
-	set_combiner(m);
-	set_eye_spacing(0.07);
+	init();
 }
 
-void StereoView::set_combiner(const StereoCombiner &c)
+void StereoView::init()
 {
-	combiner = &c;
+	content = 0;
 
-	unsigned w = width/combiner->get_width_divisor();
-	unsigned h = height/combiner->get_height_divisor();
+	unsigned w = combiner.get_target_width();
+	unsigned h = combiner.get_target_height();
 	left.create_target(w, h);
 	right.create_target(w, h);
+
+	set_eye_spacing(0.064);
+	set_strabismus(Geometry::Angle<float>::zero());
+}
+
+void StereoView::set_content(const GL::Renderable *r)
+{
+	content = r;
 }
 
 void StereoView::set_eye_spacing(float s)
 {
-	eye_spacing = s;
+	GL::Vector3 offset(s/2, 0, 0);
+	set_eye_matrices(GL::Matrix::translation(-offset), GL::Matrix::translation(offset));
+}
+
+void StereoView::set_eye_matrices(const GL::Matrix &left_matrix, const GL::Matrix &right_matrix)
+{
+	left.offset_matrix = left_matrix;
+	right.offset_matrix = right_matrix;
+}
+
+void StereoView::set_strabismus(const Geometry::Angle<float> &s)
+{
+	strabismus = s;
 }
 
 void StereoView::setup_frame() const
 {
-	offset_axis = normalize(cross(base_camera.get_look_direction(), base_camera.get_up_direction()))*0.5f;
+	if(head_camera)
+		head_camera->update();
 
 	EyeParams params;
-	params.fov = combiner->get_field_of_view();
-	if(!params.fov)
+	params.fov = combiner.get_field_of_view();
+	if(params.fov==Geometry::Angle<float>::zero())
 		params.fov = base_camera.get_field_of_view();
 
-	params.aspect = base_camera.get_aspect();
-	if(!combiner->is_aspect_kept())
-		params.aspect = params.aspect*combiner->get_height_divisor()/combiner->get_width_divisor();
-
+	params.aspect = combiner.get_render_aspect();
 	params.near_clip = base_camera.get_near_clip();
 	params.far_clip = base_camera.get_far_clip();
 
-	left.setup_frame(base_camera, offset_axis*-eye_spacing, params);
-	right.setup_frame(base_camera, offset_axis*eye_spacing, params);
-
-	renderable.setup_frame();
-}
+	float frustum_skew = combiner.get_frustum_skew();
+	float halfw = tan(params.fov/2.0f)*params.aspect;
+	frustum_skew = tan(Geometry::atan<float>(frustum_skew*halfw)+strabismus)/halfw;
 
-void StereoView::finish_frame() const
-{
-	renderable.finish_frame();
+	left.setup_frame(base_camera, frustum_skew, params);
+	right.setup_frame(base_camera, -frustum_skew, params);
 }
 
-void StereoView::render(const Tag &tag) const
+void StereoView::render() const
 {
+	combiner.prepare();
 	setup_frame();
-	left.render(renderable, tag);
-	right.render(renderable, tag);
-	combiner->render(left.target->color, right.target->color);
-	finish_frame();
-}
-
-void StereoView::render(Renderer &renderer, const Tag &tag) const
-{
-	renderer.escape();
-	return render(tag);
+	if(content)
+	{
+		content->setup_frame();
+		left.render(*content);
+		right.render(*content);
+		content->finish_frame();
+	}
+	combiner.render(left.target->color, right.target->color);
 }
 
 
 StereoView::RenderTarget::RenderTarget(unsigned width, unsigned height)
 {
-	color.set_min_filter(LINEAR);
-	color.set_wrap(CLAMP_TO_EDGE);
-	color.storage(RGB, width, height);
-	fbo.attach(COLOR_ATTACHMENT0, color);
+	color.set_min_filter(GL::LINEAR);
+	color.set_wrap(GL::CLAMP_TO_EDGE);
+	color.storage(GL::RGB, width, height);
+	fbo.attach(GL::COLOR_ATTACHMENT0, color);
 
-	depth.storage(DEPTH_COMPONENT, width, height);
-	fbo.attach(DEPTH_ATTACHMENT, depth);
+	depth.storage(GL::DEPTH_COMPONENT, width, height);
+	fbo.attach(GL::DEPTH_ATTACHMENT, depth);
 }
 
 
@@ -98,23 +118,26 @@ void StereoView::Eye::create_target(unsigned w, unsigned h)
 	target = new RenderTarget(w, h);
 }
 
-void StereoView::Eye::setup_frame(const Camera &base_camera, const Vector3 &offset, const EyeParams &params) const
+void StereoView::Eye::setup_frame(const GL::Camera &base_camera, float frustum_skew, const EyeParams &params) const
 {
-	camera.set_position(base_camera.get_position()+offset);
-	camera.set_up_direction(base_camera.get_up_direction());
-	camera.set_look_direction(base_camera.get_look_direction());
+	GL::Matrix matrix = base_camera.get_object_matrix()*offset_matrix;
+	camera.set_position(matrix*GL::Vector3());
+	camera.set_up_direction((matrix*GL::Vector4(0, 1, 0, 0)).slice<3>(0));
+	camera.set_look_direction((matrix*GL::Vector4(0, 0, -1, 0)).slice<3>(0));
 
 	camera.set_field_of_view(params.fov);
 	camera.set_aspect(params.aspect);
 	camera.set_depth_clip(params.near_clip, params.far_clip);
+	camera.set_frustum_axis(frustum_skew, 0);
 }
 
-void StereoView::Eye::render(const Renderable &renderable, const Tag &tag) const
+void StereoView::Eye::render(const GL::Renderable &renderable) const
 {
-	Bind bind_fbo(target->fbo);
-	Renderer renderer(&camera);
-	renderable.render(renderer, tag);
+	GL::Bind bind_fbo(target->fbo);
+	target->fbo.clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
+	GL::Renderer renderer(&camera);
+	renderable.render(renderer);
 }
 
-} // namespace GL
+} // namespace VR
 } // namespace Msp