| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <link rel="stylesheet" href="resources/webgl_test_files/resources/js-test-style.css"/> |
| <script src="resources/webgl_test_files/js/js-test-pre.js"></script> |
| <script src="resources/webgl_test_files/js/webgl-test-utils.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <canvas id="canvas" width="1" height="1"></canvas> |
| <script> |
| "use strict"; |
| description("Test that deleteFramebuffer() on the draw framebuffer alone does not unbind the read framebuffer."); |
| |
| var wtu = WebGLTestUtils; |
| var gl = wtu.create3DContext(canvas, undefined, 2); |
| gl.clearColor(1, 0, 0, 1); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| |
| var green = [0, 255, 0, 255]; |
| var texture = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, texture); |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(green)); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); |
| var readFB = gl.createFramebuffer(); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, readFB); |
| gl.framebufferTexture2D(gl.READ_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0); |
| |
| var drawFB = gl.createFramebuffer(); |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, drawFB); |
| gl.deleteFramebuffer(drawFB); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "deleteFramebuffer(drawFB) succeeds"); |
| |
| shouldBe("gl.getParameter(gl.READ_FRAMEBUFFER_BINDING)", "readFB"); |
| shouldBeNull("gl.getParameter(gl.DRAW_FRAMEBUFFER_BINDING)"); |
| shouldBe("gl.checkFramebufferStatus(gl.READ_FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE"); |
| wtu.checkCanvasRect(gl, 0, 0, 1, 1, green, "read green after delete"); |
| |
| finishTest(); |
| |
| </script> |
| </body> |
| </html> |
