Upstream version 7.36.149.0

[platform/framework/web/crosswalk.git] / src / third_party / webgl / src / sdk / tests / conformance / extensions / oes-texture-float.html

diff --git a/src/third_party/webgl/src/sdk/tests/conformance/extensions/oes-texture-float.html b/src/third_party/webgl/src/sdk/tests/conformance/extensions/oes-texture-float.html
index f89b0b7..08d1abd 100644 (file)
--- a/src/third_party/webgl/src/sdk/tests/conformance/extensions/oes-texture-float.html
+++ b/src/third_party/webgl/src/sdk/tests/conformance/extensions/oes-texture-float.html
@@ -111,10 +111,10 @@ if (!gl) {
       runTextureCreationTest(testProgram, true, gl.LUMINANCE, 1, [10000, 10000, 10000, 1]);
       runTextureCreationTest(testProgram, true, gl.ALPHA, 1, [0, 0, 0, 10000]);
       runTextureCreationTest(testProgram, true, gl.LUMINANCE_ALPHA, 2, [10000, 10000, 10000, 10000]);
-      runRenderTargetTest(testProgram, gl.RGBA, 4, [10000, 10000, 10000, 10000], 0);
-      runRenderTargetTest(testProgram, gl.RGB, 3, [10000, 10000, 10000, 1], 0);
-      runRenderTargetTest(testProgram, gl.RGBA, 4, [10000, 10000, 10000, 10000], 1);
-      runRenderTargetTest(testProgram, gl.RGBA, 4, [10000, 10000, 10000, 10000], 0.5);
+      runRenderTargetAndReadbackTest(testProgram, gl.RGBA, 4, [10000, 10000, 10000, 10000], 0);
+      runRenderTargetAndReadbackTest(testProgram, gl.RGB, 3, [10000, 10000, 10000, 1], 0);
+      runRenderTargetAndReadbackTest(testProgram, gl.RGBA, 4, [10000, 10000, 10000, 10000], 1);
+      runRenderTargetAndReadbackTest(testProgram, gl.RGBA, 4, [10000, 10000, 10000, 10000], 0.5);
       runUniqueObjectTest();
   }
 }
@@ -173,7 +173,23 @@ function runTextureCreationTest(testProgram, extensionEnabled, opt_format, opt_n
     wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red");
 }
 
-function runRenderTargetTest(testProgram, format, numberOfChannels, subtractor, texSubImageCover)
+function arrayToString(arr, size) {
+    var mySize;
+    if (!size)
+        mySize = arr.length;
+    else
+        mySize = size;
+    var out = "[";
+    for (var ii = 0; ii < mySize; ++ii) {
+       if (ii > 0) {
+           out += ", ";
+       }
+       out += arr[ii];
+    }
+    return out + "]";
+}
+
+function runRenderTargetAndReadbackTest(testProgram, format, numberOfChannels, subtractor, texSubImageCover)
 {
     var formatString = wtu.glEnumToString(gl, format);
     debug("");
@@ -227,6 +243,33 @@ function runRenderTargetTest(testProgram, format, numberOfChannels, subtractor,
     wtu.clearAndDrawUnitQuad(gl);
     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "rendering from floating-point texture should succeed");
     checkRenderingResults();
+
+    // Finally, if the implementation supports floating-point readback, verify it.
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+    var implFormat = gl.getParameter(gl.IMPLEMENTATION_COLOR_READ_FORMAT);
+    var implType = gl.getParameter(gl.IMPLEMENTATION_COLOR_READ_TYPE);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "getParameter of IMPLEMENTATION_COLOR_READ_{FORMAT|TYPE} should succeed");
+    if ((implFormat == gl.RGBA || implFormat == gl.RGB) && implType == gl.FLOAT) {
+       debug("Checking readback of floating-point values");
+       var arraySize = (implFormat == gl.RGBA) ? 4 : 3
+       var buf = new Float32Array(arraySize);
+       gl.readPixels(0, 0, 1, 1, implFormat, implType , buf);
+       wtu.glErrorShouldBe(gl, gl.NO_ERROR, "readPixels from floating-point renderbuffer should succeed");
+       var ok = true;
+       var tolerance = 8.0; // TODO: factor this out from both this test and the subtractor shader above.
+       for (var ii = 0; ii < buf.length; ++ii) {
+           if (Math.abs(buf[ii] - subtractor[ii]) > tolerance) {
+               ok = false;
+               break;
+           }
+       }
+       if (ok) {
+           testPassed("readPixels of float-type data from floating-point renderbuffer succeeded");
+       } else {
+           testFailed("readPixels of float-type data from floating-point renderbuffer failed: expected "
+                      + arrayToString(subtractor, arraySize) + ", got " + arrayToString(buf));
+       }
+    }
 }
 
 function runUniqueObjectTest()