X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=dither_effect.cpp;fp=dither_effect.cpp;h=305268e2396bc0e47c7404c385b1fa984ed0088e;hp=1399c8196984c728ac148ea686f4ab9de504e403;hb=a27be9dd53b8bd14fe7bf8896e8459dcab297119;hpb=c8ddccde29b5dd2c207cc67fa8af2707904557d8

diff --git a/dither_effect.cpp b/dither_effect.cpp
index 1399c81..305268e 100644
--- a/dither_effect.cpp
+++ b/dither_effect.cpp
@@ -85,6 +85,10 @@ void DitherEffect::set_gl_state(GLuint glsl_program_num, const std::string &pref
 {
 	Effect::set_gl_state(glsl_program_num, prefix, sampler_num);
 
+	assert(width > 0);
+	assert(height > 0);
+	assert(num_bits > 0);
+
 	if (width != last_width || height != last_height || num_bits != last_num_bits) {
 		update_texture(glsl_program_num, prefix, sampler_num);
 		last_width = width;