| |
| library tex_image_and_sub_image_2d_with_image_data; |
| |
| import 'dart:html'; |
| import 'dart:web_gl' as wgl; |
| import 'webgl-test.dart'; |
| import 'webgl-test-utils.dart' as wtu; |
| import "../../../../testcommon.dart"; |
| |
| generateTest(pixelFormat, pixelType, prologue) { |
| var gl = null; |
| var textureLoc = null; |
| var imageData = null; |
| |
| runOneIteration(useTexSubImage2D, flipY, premultiplyAlpha, topColor, bottomColor) |
| { |
| debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') + |
| ' with flipY=$flipY and premultiplyAlpha=$premultiplyAlpha'); |
| gl.clear(wgl.COLOR_BUFFER_BIT | wgl.DEPTH_BUFFER_BIT); |
| // Enable writes to the RGBA channels |
| gl.colorMask(true, true, true, false); |
| var texture = gl.createTexture(); |
| // Bind the texture to texture unit 0 |
| gl.bindTexture(wgl.TEXTURE_2D, texture); |
| // Set up texture parameters |
| gl.texParameteri(wgl.TEXTURE_2D, wgl.TEXTURE_MIN_FILTER, wgl.NEAREST); |
| gl.texParameteri(wgl.TEXTURE_2D, wgl.TEXTURE_MAG_FILTER, wgl.NEAREST); |
| // Set up pixel store parameters |
| gl.pixelStorei(wgl.UNPACK_FLIP_Y_WEBGL, flipY ? 1 : 0); |
| gl.pixelStorei(wgl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, premultiplyAlpha ? 1 : 0); |
| // Upload the image into the texture |
| if (useTexSubImage2D) { |
| // Initialize the texture to black first |
| gl.texImage2D(wgl.TEXTURE_2D, 0, pixelFormat, 1, 2, 0, |
| pixelFormat, pixelType, null); |
| gl.texSubImage2D(wgl.TEXTURE_2D, 0, 0, 0, pixelFormat, pixelType, imageData); |
| } else { |
| gl.texImage2D(wgl.TEXTURE_2D, 0, pixelFormat, pixelFormat, pixelType, imageData); |
| } |
| |
| // Point the uniform sampler to texture unit 0 |
| gl.uniform1i(textureLoc, 0); |
| // Draw the triangles |
| wtu.drawQuad(gl, [0, 0, 0, 255]); |
| |
| // Check the top pixel and bottom pixel and make sure they have |
| // the right color. |
| debug("Checking bottom pixel"); |
| wtu.checkCanvasRect(gl, 0, 0, 1, 1, bottomColor, "shouldBe $bottomColor"); |
| debug("Checking top pixel"); |
| wtu.checkCanvasRect(gl, 0, 1, 1, 1, topColor, "shouldBe $topColor"); |
| } |
| |
| runTest() |
| { |
| var red = [255, 0, 0, 255]; |
| var green = [0, 255, 0, 255]; |
| var redPremultiplyAlpha = [255, 0, 0, 255]; |
| var greenPremultiplyAlpha = [0, 0, 0, 255]; |
| |
| runOneIteration(false, true, false, |
| red, green); |
| runOneIteration(false, false, false, |
| green, red); |
| runOneIteration(false, true, true, |
| redPremultiplyAlpha, greenPremultiplyAlpha); |
| runOneIteration(false, false, true, |
| greenPremultiplyAlpha, redPremultiplyAlpha); |
| runOneIteration(true, true, false, |
| red, green); |
| runOneIteration(true, false, false, |
| green, red); |
| runOneIteration(true, true, true, |
| redPremultiplyAlpha, greenPremultiplyAlpha); |
| runOneIteration(true, false, true, |
| greenPremultiplyAlpha, redPremultiplyAlpha); |
| |
| glErrorShouldBe(gl, wgl.NO_ERROR, "should be no errors"); |
| } |
| |
| var init = () |
| { |
| debug('Verify texImage2D and texSubImage2D code paths taking ImageData ($pixelFormat/$pixelType)'); |
| |
| gl = wtu.create3DContext("example"); |
| |
| if (!prologue(gl)) { |
| return; |
| } |
| |
| var program = wtu.setupTexturedQuad(gl); |
| gl.clearColor(0,0,0,1); |
| gl.clearDepth(1); |
| gl.disable(wgl.BLEND); |
| |
| textureLoc = gl.getUniformLocation(program, "tex"); |
| |
| var canvas2d = document.getElementById("texcanvas"); |
| var context2d = canvas2d.getContext("2d"); |
| imageData = context2d.createImageData(1, 2); |
| var data = imageData.data; |
| data[0] = 255; |
| data[1] = 0; |
| data[2] = 0; |
| data[3] = 255; |
| data[4] = 0; |
| data[5] = 255; |
| data[6] = 0; |
| data[7] = 0; |
| |
| runTest(); |
| }; |
| |
| return init; |
| } |