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| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL TexParameter conformance test.</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../resources/js-test-pre.js"></script> |
| <script src="../resources/webgl-test-utils.js"> </script> |
| </head> |
| <body> |
| <canvas id="example" width="24" height="24"></canvas> |
| <canvas id="canvas2d" width="2" height="2"></canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script id="vshader" type="x-shader/x-vertex"> |
| uniform mat4 world; |
| attribute vec3 vPosition; |
| attribute vec2 texCoord0; |
| varying vec2 texCoord; |
| void main() |
| { |
| gl_Position = world * vec4(vPosition, 1); |
| texCoord = texCoord0; |
| } |
| </script> |
| |
| <script id="fshader" type="x-shader/x-fragment"> |
| precision mediump float; |
| |
| uniform sampler2D tex; |
| varying vec2 texCoord; |
| void main() |
| { |
| gl_FragColor = texture2D(tex, texCoord); |
| } |
| </script> |
| |
| <script> |
| "use strict"; |
| function init() |
| { |
| description("Tests TexParameter works as expected"); |
| debug(""); |
| |
| var canvas2d = document.getElementById("canvas2d"); |
| var ctx2d = canvas2d.getContext("2d"); |
| |
| var wtu = WebGLTestUtils; |
| var gl = wtu.create3DContext("example"); |
| var program = wtu.setupProgram(gl, ["vshader", "fshader"], ["vPosition", "texCoord0"]); |
| |
| var vertexObject = gl.createBuffer(); |
| gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| gl.bufferData( |
| gl.ARRAY_BUFFER, |
| new Float32Array([-1, 1,0, 1,1,0, -1,-1,0, |
| -1,-1,0, 1,1,0, 1,-1,0]), |
| gl.STATIC_DRAW); |
| gl.enableVertexAttribArray(0); |
| gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0); |
| |
| var vertexObject = gl.createBuffer(); |
| gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| gl.bufferData( |
| gl.ARRAY_BUFFER, |
| new Float32Array([ -2.5,-2.5, 3.5,-2.5, -2.5,3.5, |
| -2.5,3.5, 3.5,-2.5, 3.5,3.5]), |
| gl.STATIC_DRAW); |
| gl.enableVertexAttribArray(1); |
| gl.vertexAttribPointer(1, 2, gl.FLOAT, false, 0, 0); |
| |
| var colors = [ |
| [0,255,128,255], |
| [128,64,255,255], |
| [192,255,64,255], |
| [200,0,255,255]]; |
| var texParam = [ |
| gl.REPEAT, |
| gl.CLAMP_TO_EDGE, |
| gl.MIRRORED_REPEAT, |
| gl.REPEAT]; |
| |
| // Make textures setting the texture parameters differently each time.. |
| // This verifies both that the render correct AND that texture parameters |
| // are associated with the textures, not with the texture-units. |
| var textures = []; |
| for (var ii = 0; ii < colors.length; ++ii) { |
| var c = colors[ii]; |
| ctx2d.fillStyle = |
| "rgba(" + c[0] + "," + c[1] + "," + c[2] + "," + c[3] + ")"; |
| ctx2d.fillRect(0, 0, 1, 1); |
| var tex = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, tex); |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvas2d); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, texParam[ii]); |
| gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, texParam[ii]); |
| textures[ii] = tex; |
| } |
| |
| var textureLoc = gl.getUniformLocation(program, "tex"); |
| var worldLoc = gl.getUniformLocation(program, "world"); |
| |
| gl.clearColor(1,1,1,1); |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| |
| for (var ii = 0; ii < colors.length; ++ii) { |
| var x = ii % 2; |
| var y = Math.floor(ii / 2); |
| gl.bindTexture(gl.TEXTURE_2D, textures[ii]); |
| gl.uniformMatrix4fv( |
| worldLoc, false, |
| [0.5, 0, 0, 0, |
| 0, 0.5, 0, 0, |
| 0, 0, 1, 0, |
| -0.5 + x, -0.5 + y, 0, 1]); |
| gl.drawArrays(gl.TRIANGLES, 0, 6); |
| } |
| |
| var buf = new Uint8Array(24 * 24 * 4); |
| gl.readPixels(0, 0, 24, 24, gl.RGBA, gl.UNSIGNED_BYTE, buf); |
| var passed = true; |
| for (var ii = 0; ii < colors.length; ++ii) { |
| var x = ii % 2; |
| var y = Math.floor(ii / 2); |
| var c = colors[ii]; |
| for (var yy = 0; yy < 12; ++yy) { |
| for (var xx = 0; xx < 12; ++xx) { |
| var ec = [0,0,0,0]; |
| switch (texParam[ii]) { |
| case gl.REPEAT: |
| if (xx % 2 == 1 && yy % 2 == 0) { |
| ec = c; |
| } |
| break; |
| case gl.CLAMP_TO_EDGE: |
| if (xx < 6 && yy >= 6) { |
| ec = c; |
| } |
| break; |
| case gl.MIRRORED_REPEAT: |
| if (xx % 4 < 2 && yy % 4 >= 2) { |
| ec = c; |
| } |
| break; |
| } |
| var off = ((y * 12 + yy) * 24 + x * 12 + xx) * 4; |
| if (buf[off + 0] != ec[0] || |
| buf[off + 1] != ec[1] || |
| buf[off + 2] != ec[2] || |
| buf[off + 3] != ec[3]) { |
| var msg = 'at (' + (x * 12 + xx) + ', ' + (y * 12 + yy) + |
| ') expected: ' + |
| ec[0] + ', ' + ec[1] + ', ' + ec[2] + ', ' + ec[3] + ' found: ' + |
| buf[off + 0] + ', ' + |
| buf[off + 1] + ', ' + |
| buf[off + 2] + ', ' + |
| buf[off + 3]; |
| testFailed(msg); |
| passed = false; |
| } |
| } |
| } |
| } |
| if (passed) { |
| testPassed("rendered as expected"); |
| } |
| } |
| |
| init(); |
| var successfullyParsed = true; |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| |
| </body> |
| </html> |
| |