diff options
| author | Eric Anholt <eric@anholt.net> | 2009-08-01 15:44:43 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2009-08-01 15:44:43 -0700 |
| commit | aa36ace5a0d14b6666886349a383ec93e770d8bb (patch) | |
| tree | 493d34d6e74dd90df63ba4c92fce1c753b716c8f | |
| parent | 10bdbdcc53ae67a1c88e3f81efa69dd8f3f52f24 (diff) | |
Increase texture size and replace cullface with PolygonOffset to reduce acne.
| -rw-r--r-- | shadow_map.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/shadow_map.c b/shadow_map.c index 8ec4d55..c02d71e 100644 --- a/shadow_map.c +++ b/shadow_map.c @@ -118,7 +118,7 @@ void generate_rings_shadowmap(void) { int instance; - int shadow_width = 256, shadow_height = 256; + int shadow_width = 1024, shadow_height = 1024; GLboolean first_time = GL_FALSE; if (shadow_prog == 0) @@ -166,7 +166,11 @@ generate_rings_shadowmap(void) glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); glDrawBuffer(GL_NONE); glReadBuffer(GL_NONE); - glCullFace(GL_FRONT); + /* Move the faces away from the light, so that if they're compared + * for being lit, they'll tend to pass. + */ + glPolygonOffset(2, 2); + glEnable(GL_POLYGON_OFFSET_FILL); if (first_time) { GLenum status; @@ -194,7 +198,7 @@ generate_rings_shadowmap(void) glDrawBuffer(GL_BACK); glReadBuffer(GL_BACK); glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); - glCullFace(GL_BACK); + glDisable(GL_POLYGON_OFFSET_FILL); set_world_to_shadow_transform(); } |