From: Mikko Rasa <tdb@tdb.fi>
Date: Thu, 16 Aug 2012 19:21:09 +0000 (+0300)
Subject: Use the TexGen wrapper in ShadowMap
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=29f2d9da4ef0a0134c56bd2f8c7e6acac7773a61

Use the TexGen wrapper in ShadowMap
---

diff --git a/source/shadowmap.cpp b/source/shadowmap.cpp
index 5b2bacad..a9edacfc 100644
--- a/source/shadowmap.cpp
+++ b/source/shadowmap.cpp
@@ -6,6 +6,7 @@
 #include "renderer.h"
 #include "scene.h"
 #include "shadowmap.h"
+#include "texgen.h"
 #include "texunit.h"
 
 using namespace std;
@@ -106,29 +107,24 @@ void ShadowMap::render(Renderer &renderer, const Tag &tag) const
 		renderable.render("shadow");
 	}
 
+	// Has side effect of changing the current unit
 	depth_buf.bind_to(unit);
 	float diam = radius*2;
-	float s_eq[4] = { matrix[0]/diam, matrix[4]/diam, matrix[8]/diam, matrix[12]/diam+0.5f };
-	float t_eq[4] = { matrix[1]/diam, matrix[5]/diam, matrix[9]/diam, matrix[13]/diam+0.5f };
-	float r_eq[4] = { -matrix[2]/diam, -matrix[6]/diam, -matrix[10]/diam, 0.5f-matrix[14]/diam-4.0f/size };
-	glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
-	glTexGenfv(GL_S, GL_EYE_PLANE, s_eq);
-	enable(GL_TEXTURE_GEN_S);
-	glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
-	glTexGenfv(GL_T, GL_EYE_PLANE, t_eq);
-	enable(GL_TEXTURE_GEN_T);
-	glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
-	glTexGenfv(GL_R, GL_EYE_PLANE, r_eq);
-	enable(GL_TEXTURE_GEN_R);
-
+	TexGen tg_s, tg_t, tg_r;
+	tg_s.set_plane(Vector4(matrix[0]/diam, matrix[4]/diam, matrix[8]/diam, matrix[12]/diam+0.5f));
+	tg_t.set_plane(Vector4(matrix[1]/diam, matrix[5]/diam, matrix[9]/diam, matrix[13]/diam+0.5f));
+	tg_r.set_plane(Vector4(-matrix[2]/diam, -matrix[6]/diam, -matrix[10]/diam, 0.5f-matrix[14]/diam-4.0f/size));
+	tg_s.bind_to(SCOORD);
+	tg_t.bind_to(TCOORD);
+	tg_r.bind_to(RCOORD);
 	TexUnit::activate(0);
 
 	renderable.render(renderer, tag);
 
 	Texture::unbind_from(unit);
-	disable(GL_TEXTURE_GEN_S);
-	disable(GL_TEXTURE_GEN_T);
-	disable(GL_TEXTURE_GEN_R);
+	TexGen::unbind_from(SCOORD);
+	TexGen::unbind_from(TCOORD);
+	TexGen::unbind_from(RCOORD);
 	TexUnit::activate(0);
 }