Set the model vertex colors to white

PeterShinners · PeterShinners · commit 86fd19d54b1a · 2016-10-13T22:46:39.000-07:00
When running the given examples I had an all black screen.
I realized the shader was still multiplying the texture and vertex
colors.

An alternative solution would be to modify the fragment shader,
but felt it was better to provide proper Vertex attributes.
diff --git a/08_Loading_models.md b/08_Loading_models.md
@@ -207,6 +207,8 @@ vertex.texCoord = {
     attrib.texcoords[2 * index.texcoord_index + 0],
     attrib.texcoords[2 * index.texcoord_index + 1]
 };
+
+vertex.color = {1.0f, 1.0f, 1.0f};
 ```
 
 Unfortunately the `attrib.vertices` array is an array of `float` values instead
diff --git a/code/model_loading.cpp b/code/model_loading.cpp
@@ -1002,6 +1002,8 @@ class HelloTriangleApplication {
                     1.0f - attrib.texcoords[2 * index.texcoord_index + 1]
                 };
 
+                vertex.color = {1.0f, 1.0f, 1.0f};
+
                 if (uniqueVertices.count(vertex) == 0) {
                     uniqueVertices[vertex] = vertices.size();
                     vertices.push_back(vertex);
