| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <script src="../../../resources/js-test.js"></script> |
| <script src="resources/webgl-test.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| |
| <script> |
| description("Tests that index validation verifies the correct number of indices"); |
| |
| if (window.internals) |
| window.internals.settings.setWebGLErrorsToConsoleEnabled(false); |
| |
| function sizeInBytes(type) { |
| switch (type) { |
| case gl.BYTE: |
| case gl.UNSIGNED_BYTE: |
| return 1; |
| case gl.SHORT: |
| case gl.UNSIGNED_SHORT: |
| return 2; |
| case gl.INT: |
| case gl.UNSIGNED_INT: |
| case gl.FLOAT: |
| return 4; |
| default: |
| throw "unknown type"; |
| } |
| } |
| |
| var gl = create3DContext(); |
| var program = loadStandardProgram(gl); |
| |
| // 3 vertices => 1 triangle, interleaved data |
| var dataComplete = new Float32Array([0, 0, 0, 1, |
| 0, 0, 1, |
| 1, 0, 0, 1, |
| 0, 0, 1, |
| 1, 1, 1, 1, |
| 0, 0, 1]); |
| var dataIncomplete = new Float32Array([0, 0, 0, 1, |
| 0, 0, 1, |
| 1, 0, 0, 1, |
| 0, 0, 1, |
| 1, 1, 1, 1]); |
| var indices = new Uint16Array([0, 1, 2]); |
| |
| debug("Testing with valid indices"); |
| |
| var bufferComplete = gl.createBuffer(); |
| gl.bindBuffer(gl.ARRAY_BUFFER, bufferComplete); |
| gl.bufferData(gl.ARRAY_BUFFER, dataComplete, gl.STATIC_DRAW); |
| var elements = gl.createBuffer(); |
| gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, elements); |
| gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, indices, gl.STATIC_DRAW); |
| gl.useProgram(program); |
| var vertexLoc = gl.getAttribLocation(program, "a_vertex"); |
| var normalLoc = gl.getAttribLocation(program, "a_normal"); |
| gl.vertexAttribPointer(vertexLoc, 4, gl.FLOAT, false, 7 * sizeInBytes(gl.FLOAT), 0); |
| gl.enableVertexAttribArray(vertexLoc); |
| gl.vertexAttribPointer(normalLoc, 3, gl.FLOAT, false, 7 * sizeInBytes(gl.FLOAT), 4 * sizeInBytes(gl.FLOAT)); |
| gl.enableVertexAttribArray(normalLoc); |
| shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE'); |
| glErrorShouldBe(gl, gl.NO_ERROR); |
| shouldBeUndefined('gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)'); |
| glErrorShouldBe(gl, gl.NO_ERROR); |
| |
| debug("Testing with out-of-range indices"); |
| |
| var bufferIncomplete = gl.createBuffer(); |
| gl.bindBuffer(gl.ARRAY_BUFFER, bufferIncomplete); |
| gl.bufferData(gl.ARRAY_BUFFER, dataIncomplete, gl.STATIC_DRAW); |
| gl.vertexAttribPointer(vertexLoc, 4, gl.FLOAT, false, 7 * sizeInBytes(gl.FLOAT), 0); |
| gl.enableVertexAttribArray(vertexLoc); |
| gl.disableVertexAttribArray(normalLoc); |
| debug("Enable vertices, valid"); |
| glErrorShouldBe(gl, gl.NO_ERROR); |
| shouldBeUndefined('gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)'); |
| glErrorShouldBe(gl, gl.NO_ERROR); |
| debug("Enable normals, out-of-range"); |
| gl.vertexAttribPointer(normalLoc, 3, gl.FLOAT, false, 7 * sizeInBytes(gl.FLOAT), 4 * sizeInBytes(gl.FLOAT)); |
| gl.enableVertexAttribArray(normalLoc); |
| glErrorShouldBe(gl, gl.NO_ERROR); |
| shouldBeUndefined('gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)'); |
| glErrorShouldBe(gl, gl.INVALID_OPERATION); |
| |
| debug("Test with enabled attribute that does not belong to current program"); |
| |
| gl.disableVertexAttribArray(normalLoc); |
| var extraLoc = Math.max(vertexLoc, normalLoc) + 1; |
| gl.enableVertexAttribArray(extraLoc); |
| debug("Enable an extra attribute with null"); |
| glErrorShouldBe(gl, gl.NO_ERROR); |
| shouldBeUndefined('gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)'); |
| glErrorShouldBe(gl, gl.INVALID_OPERATION); |
| debug("Enable an extra attribute with insufficient data buffer"); |
| gl.vertexAttribPointer(extraLoc, 3, gl.FLOAT, false, 7 * sizeInBytes(gl.FLOAT), 4 * sizeInBytes(gl.FLOAT)); |
| glErrorShouldBe(gl, gl.NO_ERROR); |
| shouldBeUndefined('gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)'); |
| debug("Pass large negative index to vertexAttribPointer"); |
| gl.vertexAttribPointer(normalLoc, 3, gl.FLOAT, false, 7 * sizeInBytes(gl.FLOAT), -2000000000 * sizeInBytes(gl.FLOAT)); |
| glErrorShouldBe(gl, gl.INVALID_VALUE); |
| shouldBeUndefined('gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0)'); |
| </script> |
| </body> |
| </html> |
