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Added flag to pre-multiply vertex colors by material base color

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This commit is contained in:
Sascha Willems 2020-04-25 10:50:24 +02:00
parent d28d9279f5
commit 5df36d7b19
1 changed files with 18 additions and 7 deletions
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25
base/VulkanglTFModel.hpp
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@ -538,9 +538,10 @@ namespace vkglTF
}
};
typedef enum FileLoadingFlags {
None = 0,
PreTransformVertices = 1,
typedef enum FileLoadingFlags {
None = 0,
PreTransformVertices = 1,
PreMultiplyVertexColors = 2
};
/*
@ -1040,14 +1041,24 @@ namespace vkglTF
return;
}
// Pre-transform all vertices by the node matrix hierarchy if requested
if (fileLoadingFlags & FileLoadingFlags::PreTransformVertices) {
// Pre-Calculations for requested features
if ((fileLoadingFlags & FileLoadingFlags::PreTransformVertices) || (fileLoadingFlags & FileLoadingFlags::PreMultiplyVertexColors)) {
const bool preTransform = fileLoadingFlags & FileLoadingFlags::PreTransformVertices;
const bool preMultiplyColor = fileLoadingFlags & FileLoadingFlags::PreMultiplyVertexColors;
for (Node* node : linearNodes) {
const glm::mat4 localMatrix = node->getMatrix();
if (node->mesh) {
const glm::mat4 localMatrix = node->getMatrix();
for (Primitive* primitive : node->mesh->primitives) {
for (uint32_t i = 0; i < primitive->vertexCount; i++) {
vertexBuffer[primitive->firstVertex + i].pos = glm::vec3(localMatrix * glm::vec4(vertexBuffer[primitive->firstVertex + i].pos, 1.0f));
Vertex& vertex = vertexBuffer[primitive->firstVertex + i];
// Pre-transform vertex positions by node-hierarchy
if (preTransform) {
vertex.pos = glm::vec3(localMatrix * glm::vec4(vertex.pos, 1.0f));
}
// Pre-Multiply vertex colors with material base color
if (preMultiplyColor) {
vertex.color = primitive->material.baseColorFactor * vertex.color;
}
}
}
}