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[require]
GLSL >= 1.30
GL_ARB_texture_query_levels
[vertex shader passthrough]
[fragment shader]
#extension GL_ARB_texture_query_levels: require
uniform sampler2D s;
// The only thing the spec says about textures without a minification filter is:
// "If the texture is complete, a non-zero value must be returned."
void main() {
if (textureQueryLevels(s) != 0)
gl_FragColor = vec4(0,1,0,0);
else
gl_FragColor = vec4(1,0,0,0);
}
[test]
ortho
clear color 0.4 0.4 0.4 0
clear
texture miptree 0
uniform int s 0
texparameter 2D min nearest
texparameter 2D mag nearest
draw rect -1 -1 2 2
relative probe rgba (0.5, 0.5) (0, 1, 0, 0)
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