From ee687440c7707c15360434c8e5f4566d9610435a Mon Sep 17 00:00:00 2001
From: Vincent Lejeune <vljn@ovi.com>
Date: Wed, 29 Oct 2014 18:57:39 +0100
Subject: [PATCH] Increase shadow filtering
---
data/shaders/sunlightshadow.frag | 7 ++++---
src/graphics/render_geometry.cpp | 3 +++
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/data/shaders/sunlightshadow.frag b/data/shaders/sunlightshadow.frag
index 0fe6dc07f..6f5996969 100644
--- a/data/shaders/sunlightshadow.frag
+++ b/data/shaders/sunlightshadow.frag
@@ -43,11 +43,12 @@ float getShadowFactor(vec3 pos, float bias, int index)
//float shadowmapz = 2. * texture(shadowtex, vec3(shadowtexcoord, shadowcoord.z).x - 1.;
// bias += smoothstep(0.001, 0.1, moved) * 0.014; // According to the warping
float sum = 0.;
- for (int i = 0; i < 4; i++)
+ for (float i = -1.5; i <= 1.5; i+= 1.)
{
- sum += texture(shadowtex, vec4(shadowtexcoord + shadowoffset[i] / 2048., float(index), 0.5 * shadowcoord.z + 0.5));
+ for (float j = -1.5; j <= 1.5; j+= 1.)
+ sum += texture(shadowtex, vec4(shadowtexcoord +vec2(i, j) / 1024., float(index), 0.5 * shadowcoord.z + 0.5));
}
- return sum / 4.;
+ return sum / 16.;
}
void main() {
diff --git a/src/graphics/render_geometry.cpp b/src/graphics/render_geometry.cpp
index ba9b30916..9f602bc0b 100644
--- a/src/graphics/render_geometry.cpp
+++ b/src/graphics/render_geometry.cpp
@@ -978,6 +978,8 @@ void IrrDriver::renderShadows()
glDepthMask(GL_TRUE);
glEnable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
+ glEnable(GL_CULL_FACE);
+ glCullFace(GL_FRONT);
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(1.5, 0.);
m_rtts->getShadowFBO().Bind();
@@ -1022,6 +1024,7 @@ void IrrDriver::renderShadows()
}
glDisable(GL_POLYGON_OFFSET_FILL);
+ glCullFace(GL_BACK);
}