// Copy triangles to array of vertexes and return count of triangles to draw
public int CopyDecalsToVertices(MyVertexFormatDecal[] vertices)
{
CheckIfBufferIsFull();
float fadingOutAlpha = 1;
if ((m_status == MyDecalsBufferState.FADING_OUT_ONLY_BEGINNING) || (m_status == MyDecalsBufferState.FADING_OUT_ALL))
{
fadingOutAlpha = 1 - MathHelper.Clamp((float)(MyRender.RenderTimeInMS - m_fadingOutStartTime) / (float)MyDecalsConstants.DECALS_FADE_OUT_INTERVAL_MILISECONDS, 0, 1);
}
int i = 0;
foreach (MyDecalTriangle decalTriangle in m_trianglesQueue)
{
float alpha = 1;
// If fading-out, we blend first 'm_fadingOutRealTriangleCount' triangles
if (m_status == MyDecalsBufferState.FADING_OUT_ALL)
{
alpha = fadingOutAlpha;
}
else if ((m_status == MyDecalsBufferState.FADING_OUT_ONLY_BEGINNING) && (i < m_fadingOutRealTriangleCount))
{
alpha = fadingOutAlpha;
}
int vertexIndexStart = i * MyDecalsConstants.VERTEXES_PER_DECAL;
vertices[vertexIndexStart + 0].Position = decalTriangle.Position0;
vertices[vertexIndexStart + 1].Position = decalTriangle.Position1;
vertices[vertexIndexStart + 2].Position = decalTriangle.Position2;
vertices[vertexIndexStart + 0].TexCoord = decalTriangle.TexCoord0;
vertices[vertexIndexStart + 1].TexCoord = decalTriangle.TexCoord1;
vertices[vertexIndexStart + 2].TexCoord = decalTriangle.TexCoord2;
Vector4 color0 = decalTriangle.Color0;
Vector4 color1 = decalTriangle.Color1;
Vector4 color2 = decalTriangle.Color2;
color0.W *= alpha;
color1.W *= alpha;
color2.W *= alpha;
vertices[vertexIndexStart + 0].Color = color0;
vertices[vertexIndexStart + 1].Color = color1;
vertices[vertexIndexStart + 2].Color = color2;
vertices[vertexIndexStart + 0].Normal = decalTriangle.Normal0;
vertices[vertexIndexStart + 1].Normal = decalTriangle.Normal1;
vertices[vertexIndexStart + 2].Normal = decalTriangle.Normal2;
/*
* vertices[vertexIndexStart + 0].Tangent = decalTriangle.Tangent0;
* vertices[vertexIndexStart + 1].Tangent = decalTriangle.Tangent1;
* vertices[vertexIndexStart + 2].Tangent = decalTriangle.Tangent2;
*/
float emisivity = MyDecals.UpdateDecalEmissivity(decalTriangle, alpha, RenderObject);
vertices[vertexIndexStart + 0].EmissiveRatio = emisivity;
vertices[vertexIndexStart + 1].EmissiveRatio = emisivity;
vertices[vertexIndexStart + 2].EmissiveRatio = emisivity;
i++;
}
return(i);
}
