[Tizen] Fix gltf animation's 0 frame behavior.

Current dali animation's KeyFrame didn't determine when the time is out of frame.
But gltf 2.0 spec say that we must clamp the time as input range.

To match the spec, make the 0 frame's animation keyframe value.

Change-Id: I2831d9f44c2e21ad12b40fa4b52c1d4e4b1d8e9a
Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>

diff --git a/dali-scene3d/public-api/loader/gltf2-loader.cpp b/dali-scene3d/public-api/loader/gltf2-loader.cpp
index 69bcd51..532bbb6 100644 (file)
--- a/dali-scene3d/public-api/loader/gltf2-loader.cpp
+++ b/dali-scene3d/public-api/loader/gltf2-loader.cpp
@@ -988,6 +988,7 @@ float LoadDataFromAccessors(ConversionContext& context, const gltf2::Accessor& i
 
   LoadDataFromAccessor<float>(context, output.mBufferView->mBuffer.GetIndex(), inputDataBuffer, input.mBufferView->mByteOffset + input.mByteOffset, inputDataBufferSize);
   LoadDataFromAccessor<T>(context, output.mBufferView->mBuffer.GetIndex(), outputDataBuffer, output.mBufferView->mByteOffset + output.mByteOffset, outputDataBufferSize);
+  ApplyAccessorMinMax(input, reinterpret_cast<float*>(inputDataBuffer.begin()));
   ApplyAccessorMinMax(output, reinterpret_cast<float*>(outputDataBuffer.begin()));
 
   return inputDataBuffer[input.mCount - 1u];
@@ -1004,6 +1005,12 @@ float LoadKeyFrames(ConversionContext& context, const gt::Animation::Channel& ch
 
   const float duration = std::max(LoadDataFromAccessors<T>(context, input, output, inputDataBuffer, outputDataBuffer), AnimationDefinition::MIN_DURATION_SECONDS);
 
+  // Set first frame value as first keyframe (gltf animation spec)
+  if(input.mCount > 0 && !Dali::EqualsZero(inputDataBuffer[0]))
+  {
+    keyFrames.Add(0.0f, outputDataBuffer[0]);
+  }
+
   for(uint32_t i = 0; i < input.mCount; ++i)
   {
     keyFrames.Add(inputDataBuffer[i] / duration, outputDataBuffer[i]);
@@ -1020,7 +1027,7 @@ float LoadBlendShapeKeyFrames(ConversionContext& context, const gt::Animation::C
   Vector<float> inputDataBuffer;
   Vector<float> outputDataBuffer;
 
-  const float duration = LoadDataFromAccessors<float>(context, input, output, inputDataBuffer, outputDataBuffer);
+  const float duration = std::max(LoadDataFromAccessors<float>(context, input, output, inputDataBuffer, outputDataBuffer), AnimationDefinition::MIN_DURATION_SECONDS);
 
   char        weightNameBuffer[32];
   auto        prefixSize    = snprintf(weightNameBuffer, sizeof(weightNameBuffer), "%s[", BLEND_SHAPE_WEIGHTS_UNIFORM.c_str());
@@ -1035,6 +1042,13 @@ float LoadBlendShapeKeyFrames(ConversionContext& context, const gt::Animation::C
     animatedProperty.mPropertyName = std::string(weightNameBuffer);
 
     animatedProperty.mKeyFrames = KeyFrames::New();
+
+    // Set first frame value as first keyframe (gltf animation spec)
+    if(input.mCount > 0 && !Dali::EqualsZero(inputDataBuffer[0]))
+    {
+      animatedProperty.mKeyFrames.Add(0.0f, outputDataBuffer[weightIndex]);
+    }
+
     for(uint32_t i = 0; i < input.mCount; ++i)
     {
       animatedProperty.mKeyFrames.Add(inputDataBuffer[i] / duration, outputDataBuffer[i * endWeightIndex + weightIndex]);