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// [config]
// expect_result: pass
// glsl_version: 1.10
// [end config]
//
// Check that sampler arrays can be indexed with non-constant expressions.
//
// The GLSL 1.10 and 1.20 specs place no restriction on how arrays of samplers
// may be indexed. The restriction was added in GLSL 1.30.
//
// From page 106 (112 of PDF) of GLSL ES 1.00 spec:
//
// GLSL ES 1.00 supports both arrays of samplers and arrays of structures
// which contain samplers. In both these cases, for ES 2.0, support for
// indexing with a constant integral expression is mandated but support
// for indexing with other values is not mandated.
//
// This test should work on GLSL ES 1.00, but it is not required to.
#ifdef GL_ES
precision mediump float;
#endif
varying vec2 tc[gl_MaxTextureImageUnits];
uniform sampler2D s[gl_MaxTextureImageUnits];
void main() {
vec4 c = vec4(0.0);
for (int i = 0; i < gl_MaxTextureImageUnits; i++)
c += texture2D(s[i], tc[i]);
gl_FragColor = c;
}
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