X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fshadowmap.cpp;h=6f62870be5c73b7f8a5420ac72851f3b05ae4676;hb=d7e7f87d173156aa12694ce54d688c40a2eabe2e;hp=b930315f626140d43c461910a8c8bfc01fdfd580;hpb=223e33164d0706d357efc03da1dc31a653f6afcf;p=libs%2Fgl.git

diff --git a/source/shadowmap.cpp b/source/shadowmap.cpp
index b930315f..6f62870b 100644
--- a/source/shadowmap.cpp
+++ b/source/shadowmap.cpp
@@ -6,6 +6,7 @@
 #include "renderer.h"
 #include "scene.h"
 #include "shadowmap.h"
+#include "tests.h"
 #include "texgen.h"
 #include "texunit.h"
 
@@ -19,7 +20,8 @@ ShadowMap::ShadowMap(unsigned s, const Renderable &r, const Light &l):
 	size(s),
 	light(l),
 	radius(1),
-	depth_bias(4)
+	depth_bias(4),
+	rendered(false)
 {
 	depth_buf.set_min_filter(LINEAR);
 	depth_buf.set_compare_enabled(true);
@@ -63,12 +65,16 @@ void ShadowMap::set_texture_unit(unsigned u)
 	shdata.uniform("shadow_unit", i);
 }
 
-void ShadowMap::render(Renderer &renderer, const Tag &tag) const
+void ShadowMap::setup_frame() const
 {
-	if(!enabled_passes.count(tag))
-		return renderer.render(renderable, tag);
+	if(rendered)
+		return;
+
+	renderable.setup_frame();
+	rendered = true;
 
 	Vector4 lpos = light.get_position();
+
 	if(lpos.w)
 	{
 		/* XXX Not really proper way to support positional lights, but good
@@ -76,12 +82,13 @@ void ShadowMap::render(Renderer &renderer, const Tag &tag) const
 		lpos.x -= target.x;
 		lpos.y -= target.y;
 		lpos.z -= target.z;
-		float d = sqrt(lpos.x*lpos.x+lpos.y*lpos.y+lpos.z*lpos.z);
-		lpos.x /= d;
-		lpos.y /= d;
-		lpos.z /= d;
 	}
 
+	float l = sqrt(lpos.x*lpos.x+lpos.y*lpos.y+lpos.z*lpos.z);
+	lpos.x /= l;
+	lpos.y /= l;
+	lpos.z /= l;
+
 	float matrix[16];
 	if(abs(lpos.z)>=abs(lpos.x) && abs(lpos.z)>=abs(lpos.y))
 	{
@@ -116,19 +123,32 @@ void ShadowMap::render(Renderer &renderer, const Tag &tag) const
 	matrix[11] = 0;
 	matrix[15] = 1;
 
-	renderer.escape();
+	light_matrix = matrix;
 
-	{
-		MatrixStack::Push push_mv(MatrixStack::modelview());
-		MatrixStack::Push push_proj(MatrixStack::projection());
+	MatrixStack::Push push_mv(MatrixStack::modelview());
+	MatrixStack::Push push_proj(MatrixStack::projection());
 
-		MatrixStack::projection() = Matrix::ortho(-radius, radius, -radius, radius, -radius, radius);
-		MatrixStack::modelview() = matrix;
+	MatrixStack::projection() = Matrix::ortho(-radius, radius, -radius, radius, -radius, radius);
+	MatrixStack::modelview() = light_matrix;
 
-		Bind bind_fbo(fbo, true);
-		fbo.clear(DEPTH_BUFFER_BIT);
-		renderable.render("shadow");
-	}
+	Bind bind_fbo(fbo, true);
+	Bind bind_depth(DepthTest::lequal());
+	fbo.clear(DEPTH_BUFFER_BIT);
+	renderable.render("shadow");
+}
+
+void ShadowMap::finish_frame() const
+{
+	renderable.finish_frame();
+	rendered = false;
+}
+
+void ShadowMap::render(Renderer &renderer, const Tag &tag) const
+{
+	if(!enabled_passes.count(tag))
+		return renderer.render(renderable, tag);
+
+	const double *matrix = light_matrix.data();
 
 	// Has side effect of changing the current unit
 	depth_buf.bind_to(unit);