X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=laserbrain_demo;a=blobdiff_plain;f=src%2Frenderer.cc;h=43a96db101dda147b94ce6bd30a976d2c1be7eee;hp=bb274f21960f29b6f30da8de90ae79380d1ef0c4;hb=844f36f03073c5db86a8acd2cf7cd1a89e1a16b9;hpb=74034a459f47934ef60ba295033b9cb7e597d32a

diff --git a/src/renderer.cc b/src/renderer.cc
index bb274f2..43a96db 100644
--- a/src/renderer.cc
+++ b/src/renderer.cc
@@ -1,16 +1,31 @@
 #include "renderer.h"
+#include "rtarg.h"
+#include "app.h"
+
+static RenderTarget *rtmirror;
 
 Renderer::Renderer()
 {
 	mscn = 0;
+	ropt = RENDER_ALL;
 }
 
 Renderer::~Renderer()
 {
+	destroy();
 }
 
 bool Renderer::init()
 {
+	static bool once;
+	if(!rtmirror && !once) {
+		once = true;
+		rtmirror = new RenderTarget;
+		if(!rtmirror->create(vp_width, vp_height, GL_SRGB)) {
+			error_log("failed to create mirror render target (%dx%d)\n", vp_width, vp_height);
+		}
+	}
+
 	return true;
 }
 
@@ -28,16 +43,43 @@ MetaScene *Renderer::get_scene() const
 	return mscn;
 }
 
+// render mirror reflections if ...
+#define DO_MIRRORS	\
+	mscn->mirrors &&			/* scene contains mirrors */ \
+	(ropt & RENDER_MIRRORS) &&	/* mirror rendering is enabled */ \
+	rtmirror					/* mirror render target succesfully created */
+
 void Renderer::draw() const
 {
 	if(!mscn) return;
 
+	if(DO_MIRRORS && current_render_target() != rtmirror) {
+		// check if the render target needs resizing
+		if(rtmirror->get_width() != vp_width || rtmirror->get_height() != vp_height) {
+			if(!rtmirror->resize(vp_width, vp_height)) {
+				error_log("failed to resize mirror render target (%dx%d)\n", vp_width, vp_height);
+				goto abort_mirrors;
+			}
+		}
+
+		FlatMirror *mir = mscn->mirrors;
+		while(mir) {
+			draw_mirror(mir);
+			mir = mir->next;
+		}
+	}
+abort_mirrors:
+
 	int num = (int)mscn->scenes.size();
 	for(int i=0; i<num; i++) {
 		Scene *scn = mscn->scenes[i];
 
 		int nobj = (int)scn->objects.size();
 		for(int j=0; j<nobj; j++) {
+			// don't draw mirrors, we already did that earlier (if mirror rendering enabled)
+			if((ropt & RENDER_MIRRORS) && scn->objects[j]->mtl.flat_mirror) {
+				continue;
+			}
 			draw_object(scn->objects[j]);
 		}
 	}
@@ -59,3 +101,37 @@ void Renderer::draw_object(Object *obj) const
 		obj->draw();
 	}
 }
+
+void Renderer::draw_mirror(FlatMirror *mir) const
+{
+	push_render_target(rtmirror);
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+	glMatrixMode(GL_MODELVIEW);
+	glPushMatrix();
+
+	float pdist = dot(mir->plane.normal, mir->plane.pt);
+	Vec4 peq = Vec4(mir->plane.normal.x, mir->plane.normal.y, mir->plane.normal.z, pdist);
+
+	if(mir->node) {
+		peq = mir->node->get_matrix() * peq;
+	}
+
+	Mat4 mirmat;
+	mirmat.mirror(peq.x, peq.y, peq.z, peq.w);
+	glMultMatrixf(mirmat[0]);
+
+	glFrontFace(GL_CW);
+	draw();
+	glFrontFace(GL_CCW);
+
+	glPopMatrix();
+	pop_render_target();
+
+	dump_gl_texture(rtmirror->texture()->get_id(), "mirror.ppm");
+
+	int nobj = mir->objects.size();
+	for(int i=0; i<nobj; i++) {
+		draw_object(mir->objects[i]);
+	}
+}