8 /* Section 4.3.8.1 (Input Layout Qualifiers) of the GLSL 1.50 spec says:
10 * "Fragment shaders can have an input layout only for redeclaring the
11 * built-in variable gl_FragCoord (see section 7.2 Fragment Shader
12 * Special Variables). The layout qualifier identifiers for
15 * layout-qualifier-id:
17 * pixel_center_integer"
19 * "If gl_FragCoord is redeclared in any fragment shader in a program,
20 * it must be redeclared in all the fragment shaders in that program
21 * that have a static use gl_FragCoord. All redeclarations of
22 * gl_FragCoord in all fragment shaders in a single program must have
23 * the same set of qualifiers."
25 * Tests the redeclarations of gl_FragCoord with no layout qualifiers.
35 fragcolor = gl_FragCoord.xyzz;