public GPUMeshBuffers GetVertexIndexBuffers(VBIB vbib)
{
if (gpuBuffers.TryGetValue(vbib, out var gpuVbib))
{
return(gpuVbib);
}
else
{
var newGpuVbib = new GPUMeshBuffers(vbib);
gpuBuffers.Add(vbib, newGpuVbib);
return(newGpuVbib);
}
}
private DrawCall CreateDrawCall(IKeyValueCollection objectDrawCall, VBIB vbib, GPUMeshBuffers gpuMeshBuffers, IDictionary <string, bool> shaderArguments, RenderMaterial material)
{
var drawCall = new DrawCall();
switch (objectDrawCall.GetProperty <string>("m_nPrimitiveType"))
{
case "RENDER_PRIM_TRIANGLES":
drawCall.PrimitiveType = PrimitiveType.Triangles;
break;
default:
throw new Exception("Unknown PrimitiveType in drawCall! (" + objectDrawCall.GetProperty <string>("m_nPrimitiveType") + ")");
}
drawCall.Material = material;
// Add shader parameters from material to the shader parameters from the draw call
var combinedShaderParameters = shaderArguments
.Concat(material.Material.GetShaderArguments())
.ToDictionary(kvp => kvp.Key, kvp => kvp.Value);
// Load shader
drawCall.Shader = guiContext.ShaderLoader.LoadShader(drawCall.Material.Material.ShaderName, combinedShaderParameters);
//Bind and validate shader
GL.UseProgram(drawCall.Shader.Program);
var indexBufferObject = objectDrawCall.GetSubCollection("m_indexBuffer");
var indexBuffer = default(DrawBuffer);
indexBuffer.Id = Convert.ToUInt32(indexBufferObject.GetProperty <object>("m_hBuffer"));
indexBuffer.Offset = Convert.ToUInt32(indexBufferObject.GetProperty <object>("m_nBindOffsetBytes"));
drawCall.IndexBuffer = indexBuffer;
var indexElementSize = vbib.IndexBuffers[(int)drawCall.IndexBuffer.Id].Size;
//drawCall.BaseVertex = Convert.ToUInt32(objectDrawCall.GetProperty<object>("m_nBaseVertex"));
//drawCall.VertexCount = Convert.ToUInt32(objectDrawCall.GetProperty<object>("m_nVertexCount"));
drawCall.StartIndex = Convert.ToUInt32(objectDrawCall.GetProperty <object>("m_nStartIndex")) * indexElementSize;
drawCall.IndexCount = Convert.ToInt32(objectDrawCall.GetProperty <object>("m_nIndexCount"));
if (objectDrawCall.ContainsKey("m_vTintColor"))
{
var tintColor = objectDrawCall.GetSubCollection("m_vTintColor").ToVector3();
drawCall.TintColor = new OpenTK.Vector3(tintColor.X, tintColor.Y, tintColor.Z);
}
if (!drawCall.Material.Textures.ContainsKey("g_tTintMask"))
{
drawCall.Material.Textures.Add("g_tTintMask", MaterialLoader.CreateSolidTexture(1f, 1f, 1f));
}
if (!drawCall.Material.Textures.ContainsKey("g_tNormal"))
{
drawCall.Material.Textures.Add("g_tNormal", MaterialLoader.CreateSolidTexture(0.5f, 1f, 0.5f));
}
if (indexElementSize == 2)
{
//shopkeeper_vr
drawCall.IndexType = DrawElementsType.UnsignedShort;
}
else if (indexElementSize == 4)
{
//glados
drawCall.IndexType = DrawElementsType.UnsignedInt;
}
else
{
throw new Exception("Unsupported index type");
}
var m_vertexBuffers = objectDrawCall.GetSubCollection("m_vertexBuffers");
var m_vertexBuffer = m_vertexBuffers.GetSubCollection("0"); // TODO: Not just 0
var vertexBuffer = default(DrawBuffer);
vertexBuffer.Id = Convert.ToUInt32(m_vertexBuffer.GetProperty <object>("m_hBuffer"));
vertexBuffer.Offset = Convert.ToUInt32(m_vertexBuffer.GetProperty <object>("m_nBindOffsetBytes"));
drawCall.VertexBuffer = vertexBuffer;
drawCall.VertexArrayObject = guiContext.MeshBufferCache.GetVertexArrayObject(
vbib,
drawCall.Shader,
drawCall.VertexBuffer.Id,
drawCall.IndexBuffer.Id);
return(drawCall);
}