Add correctness tests to tex-unpack-params-imagedata.html

Follow-up to KhronosGroup#2646
kainino0x · May 16, 2018 · 81fcf02 · 81fcf02
1 parent 2e7b0de
commit 81fcf02
Showing 1 changed file with 51 additions and 3 deletions.
diff --git a/sdk/tests/conformance2/textures/misc/tex-unpack-params-imagedata.html b/sdk/tests/conformance2/textures/misc/tex-unpack-params-imagedata.html
@@ -40,24 +40,72 @@
 <script>
 var wtu = WebGLTestUtils;
 var gl = wtu.create3DContext(undefined, undefined, 2);
+var actual;
 
 description("TexImage3D from ImageData with unpack params");
 
 debug("TexImage3D from ImageData with UNPACK_IMAGE_HEIGHT set (crbug.com/804123)");
 
-let imageData = new ImageData(64, 64);
+// framebuffer for readback
+var fbo = gl.createFramebuffer();
+gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+
+function makeTestData(size, start) {
+  let data = new Uint8ClampedArray(size);
+  for (let i = 0; i < size; ++i) {
+    data[i] = (start + i) % 256;
+  }
+  return data;
+}
+
+// source data
+const unpack_image_height = 7;
+const width = 4;
+const height = 4;
+const depth = 4;
+const srcWidth = width;
+const srcHeight = (height - 1) * unpack_image_height + height;
+const srcSize = srcWidth * srcHeight;
+const sizeofR8 = 1;
+const sizeofRGBA8 = 4;
+let imageData = new ImageData(makeTestData(srcSize * 4, 0), srcWidth, srcHeight);
 let texture = gl.createTexture();
 gl.bindTexture(gl.TEXTURE_3D, texture);
 
+// upload
 gl.pixelStorei(gl.UNPACK_IMAGE_HEIGHT, 2);
 gl.texImage3D(gl.TEXTURE_3D, 0, gl.R8, 1, 1, 1, 0, gl.RED, gl.UNSIGNED_BYTE, imageData);
 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "small upload");
 
-gl.pixelStorei(gl.UNPACK_IMAGE_HEIGHT, 7);
-gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, 4, 4, 4, 0, gl.RGBA, gl.UNSIGNED_BYTE, imageData);
+{
+  actual = new Uint8Array(1);
+  gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, texture, 0, 0);
+  gl.readPixels(0, 0, 1, 1, gl.RED, gl.UNSIGNED_BYTE, actual);
+  shouldBeTrue(`areArraysEqual(actual, makeTestData(1 * 1 * sizeofR8, 0))`);
+}
+
+// upload
+gl.pixelStorei(gl.UNPACK_IMAGE_HEIGHT, unpack_image_height);
+gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, imageData);
 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "larger upload");
 
+{
+  actual = new Uint8Array(width * height * sizeofRGBA8);
+  for (let z = 0; z < 4; ++z) {
+    gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, texture, 0, z);
+    gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, actual);
+    console.log("");
+    console.log(makeTestData(width * height * sizeofRGBA8,
+                             z * width * unpack_image_height * sizeofRGBA8));
+    console.log(actual);
+    shouldBeTrue(`areArraysEqual(actual,
+      makeTestData(${width} * ${height} * sizeofRGBA8,
+                   ${z} * ${width} * ${unpack_image_height} * sizeofRGBA8))`);
+  }
+}
+
 gl.deleteTexture(texture);
+gl.deleteFramebuffer(fbo);
 
 var successfullyParsed = true;
 </script>