| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL uniform location length tests</title> |
| <script src="../../js/resources/js-test-pre.js"></script> |
| <script src="resources/webgl-test.js"> </script> |
| <script src="resources/webgl-test-utils.js"> </script> |
| </head> |
| <body> |
| <canvas id="example" width="50" height="50"> |
| There is supposed to be an example drawing here, but it's not important. |
| </canvas> |
| <div id="description">Verify limits on the lengths of uniform locations.</div> |
| <div id="console"></div> |
| <script id="goodVertexShader" type="x-shader/x-vertex"> |
| // A vertex shader where the needed uniform location is exactly 256 characters. |
| struct Nesting2 { |
| vec4 identifier62CharactersLong_01234567890123456789012345678901234; |
| }; |
| |
| struct Nesting1 { |
| Nesting2 identifier64CharactersLong_0123456789012345678901234567890123456; |
| }; |
| |
| uniform Nesting1 identifier128CharactersLong_0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789; |
| |
| void main() { |
| gl_Position = identifier128CharactersLong_0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789.identifier64CharactersLong_0123456789012345678901234567890123456.identifier62CharactersLong_01234567890123456789012345678901234; |
| } |
| </script> |
| <script id="badVertexShader" type="x-shader/x-vertex"> |
| // A vertex shader where the needed uniform location is 257 characters. |
| struct Nesting2 { |
| vec4 identifier63CharactersLong_012345678901234567890123456789012345; |
| }; |
| |
| struct Nesting1 { |
| Nesting2 identifier64CharactersLong_0123456789012345678901234567890123456; |
| }; |
| |
| uniform Nesting1 identifier128CharactersLong_0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789; |
| |
| void main() { |
| Nesting2 temp = identifier128CharactersLong_0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789.identifier64CharactersLong_0123456789012345678901234567890123456; |
| gl_Position = temp.identifier63CharactersLong_012345678901234567890123456789012345; |
| } |
| </script> |
| <script id="fragmentShader" type="x-shader/x-fragment"> |
| precision mediump float; |
| |
| void main() { |
| gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); |
| } |
| </script> |
| <script> |
| if (window.initNonKhronosFramework) { |
| window.initNonKhronosFramework(false); |
| } |
| |
| var wtu = WebGLTestUtils; |
| var gl = wtu.create3DContext(document.getElementById("example")); |
| |
| debug("Test uniform location underneath the length limit"); |
| var program = wtu.loadProgramFromScript(gl, "goodVertexShader", "fragmentShader"); |
| shouldBe('gl.getProgramParameter(program, gl.LINK_STATUS)', 'true'); |
| var uniformLoc = gl.getUniformLocation(program, "identifier128CharactersLong_0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789.identifier64CharactersLong_0123456789012345678901234567890123456.identifier62CharactersLong_01234567890123456789012345678901234"); |
| shouldBeNonNull('uniformLoc'); |
| wtu.glErrorShouldBe(gl, gl.NONE); |
| |
| debug("Test uniform location over the length limit"); |
| program = wtu.loadProgramFromScript(gl, "badVertexShader", "fragmentShader"); |
| wtu.glErrorShouldBe(gl, gl.NONE); |
| shouldBe('gl.getProgramParameter(program, gl.LINK_STATUS)', 'true'); |
| var uniformLoc = gl.getUniformLocation(program, "identifier128CharactersLong_0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789.identifier64CharactersLong_0123456789012345678901234567890123456.identifier63CharactersLong_012345678901234567890123456789012345"); |
| wtu.glErrorShouldBe(gl, gl.INVALID_VALUE); |
| shouldBeNull('uniformLoc'); |
| |
| </script> |
| <script src="../../js/resources/js-test-post.js"></script> |
| </body> |
| </html> |
