private static void ValidateVertShaderInputsMatchVertLayout(ParsedShader shader, VertexLayoutDescription layout)
{
var vertInputs = shader.Attributes.Where(a => a.Direction == ShaderAttributeDirection.In).ToArray();
if (vertInputs.Length != layout.Elements.Length)
{
throw new FormatException($"Vertex shader input count ({vertInputs.Length}) does not match vert type layout elements ({layout.Elements.Length})");
}
for (var i = 0; i < vertInputs.Length; ++i)
{
var vertInput = vertInputs[i];
var vertLayoutElement = layout.Elements[i];
var size = vertLayoutElement.Format.Size();
if (vertInput.Name != vertLayoutElement.Name)
{
throw new FormatException($"Vertex shader input '{vertInput}' name is {vertInput.Name}, but vertex layout description expected {vertLayoutElement.Name}.");
}
if (vertInput.DataType.Size() != size)
{
throw new FormatException($"Vertex shader input '{vertInput}' size is {vertInput.DataType.Size()}, but vertex layout description expected {size}.");
}
if (vertInput.Component != vertLayoutElement.Offset)
{
throw new FormatException($"Vertex shader input '{vertInput}' offset is {vertInput.Component}, but vertex layout description expected {vertLayoutElement.Offset}.");
}
}
}
private static void ValidateVertShaderOutputsMatchFragShaderOutputs(ParsedShader vertexShader, ParsedShader fragmentShader)
{
var vertOutputs = vertexShader.Attributes.Where(a => a.Direction == ShaderAttributeDirection.Out).ToArray();
var fragInputs = fragmentShader.Attributes.Where(a => a.Direction == ShaderAttributeDirection.In).ToArray();
if (vertOutputs.Length != fragInputs.Length)
{
throw new FormatException($"Vertex shader output count ({vertOutputs.Length}) does not match frag shader input count ({fragInputs.Length}");
}
for (var i = 0; i < vertOutputs.Length; ++i)
{
var vertOutput = vertOutputs[i];
var fragInput = fragInputs[i];
if (!vertOutput.PipesTo(fragInput))
{
throw new FormatException($"Vertex shader output '{vertOutput}' does not match frag shader input `{fragInput}'.");
}
}
}
