private VertexArrayObjectInstance GetInstance(EffectInputSignature effectInputSignature)
{
VertexArrayObjectInstance inputLayout;
lock (registeredInstances)
{
if (!registeredInstances.TryGetValue(effectInputSignature, out inputLayout))
{
inputLayout = new VertexArrayObjectInstance(GraphicsDevice, effectInputSignature, vertexAttribs, indexBufferId);
registeredInstances.Add(effectInputSignature, inputLayout);
}
}
return(inputLayout);
}
internal void Apply(EffectInputSignature effectInputSignature)
{
if (effectInputSignature == null)
{
throw new ArgumentNullException("effectInputSignature");
}
// Optimization: If the current VAO and shader signature was previously used, we can use it directly without asking for a proper instance
if (RequiresApply(effectInputSignature))
{
currentInstance = ReferenceEquals(preferredInputSignature, effectInputSignature)
? preferredInstance
: GetInstance(effectInputSignature);
currentShaderSignature = effectInputSignature;
}
currentInstance.Apply(GraphicsDevice);
}
private void CreateAttributes()
{
int vertexAttribCount = 0;
for (int i = 0; i < vertexBufferBindings.Length; ++i)
{
vertexAttribCount += vertexBufferBindings[i].Declaration.VertexElements.Length;
}
vertexAttribs = new VertexAttrib[vertexAttribCount];
int j = 0;
for (int i = 0; i < vertexBufferBindings.Length; ++i)
{
var inputSlot = vertexBufferBindings[i];
var vertexBuffer = vertexBufferBindings[i].Buffer;
foreach (var vertexElementAndOffset in inputSlot.Declaration.EnumerateWithOffsets())
{
var vertexElement = vertexElementAndOffset.VertexElement;
var attributeName = "a_" + vertexElement.SemanticName + vertexElement.SemanticIndex;
var vertexElementFormat = ConvertVertexElementFormat(vertexElement.Format);
#if SILICONSTUDIO_PARADOX_GRAPHICS_API_OPENGLES
IntPtr bufferStart = vertexBuffer.ResourceId == 0
? vertexBuffer.StagingData
: (IntPtr)vertexBufferBindings[i].Offset;
#else
var bufferStart = (IntPtr)vertexBufferBindings[i].Offset;
#endif
vertexAttribs[j] = new VertexAttrib
{
VertexBufferId = vertexBuffer.ResourceId,
Index = -1,
IsInteger = IsInteger(vertexElementFormat.Type),
Size = vertexElementFormat.Size,
Type = vertexElementFormat.Type,
Normalized = vertexElementFormat.Normalized,
Stride = inputSlot.Declaration.VertexStride,
Offset = bufferStart + vertexElementAndOffset.Offset,
AttributeName = attributeName
};
j++;
}
}
if (indexBufferBinding != null)
{
indexBufferId = indexBufferBinding.Buffer.resourceId;
#if SILICONSTUDIO_PARADOX_GRAPHICS_API_OPENGLES
if (GraphicsDevice.IsOpenGLES2 && indexBufferBinding.Is32Bit)
{
throw new PlatformNotSupportedException("32 bits index buffer are not supported on OpenGL ES 2.0");
}
indexBufferOffset = (indexBufferId == 0 ? indexBufferBinding.Buffer.StagingData : IntPtr.Zero) +
indexBufferBinding.Offset;
#else
indexBufferOffset = (IntPtr)indexBufferBinding.Offset;
#endif
drawElementsType = indexBufferBinding.Is32Bit ? DrawElementsType.UnsignedInt : DrawElementsType.UnsignedShort;
indexElementSize = indexBufferBinding.Is32Bit ? 4 : 2;
}
// If we have a signature, we can already pre-create the instance
if (preferredInputSignature != null)
{
preferredInstance = GetInstance(preferredInputSignature);
}
currentShaderSignature = preferredInputSignature;
currentInstance = preferredInstance;
}
private void CreateAttributes()
{
int vertexAttribCount = 0;
for (int i = 0; i < vertexBufferBindings.Length; ++i)
{
vertexAttribCount += vertexBufferBindings[i].Declaration.VertexElements.Length;
}
vertexAttribs = new VertexAttrib[vertexAttribCount];
int j = 0;
for (int i = 0; i < vertexBufferBindings.Length; ++i)
{
var inputSlot = vertexBufferBindings[i];
var vertexBuffer = vertexBufferBindings[i].Buffer;
foreach (var vertexElementAndOffset in inputSlot.Declaration.EnumerateWithOffsets())
{
var vertexElement = vertexElementAndOffset.VertexElement;
var attributeName = "a_" + vertexElement.SemanticName + vertexElement.SemanticIndex;
var vertexElementFormat = ConvertVertexElementFormat(vertexElement.Format);
#if SILICONSTUDIO_PARADOX_GRAPHICS_API_OPENGLES
IntPtr bufferStart = vertexBuffer.ResourceId == 0
? vertexBuffer.StagingData
: (IntPtr)vertexBufferBindings[i].Offset;
#else
var bufferStart = (IntPtr)vertexBufferBindings[i].Offset;
#endif
vertexAttribs[j] = new VertexAttrib
{
VertexBufferId = vertexBuffer.ResourceId,
Index = -1,
IsInteger = IsInteger(vertexElementFormat.Type),
Size = vertexElementFormat.Size,
Type = vertexElementFormat.Type,
Normalized = vertexElementFormat.Normalized,
Stride = inputSlot.Declaration.VertexStride,
Offset = bufferStart + vertexElementAndOffset.Offset,
AttributeName = attributeName
};
j++;
}
}
if (indexBufferBinding != null)
{
indexBufferId = indexBufferBinding.Buffer.resourceId;
#if SILICONSTUDIO_PARADOX_GRAPHICS_API_OPENGLES
if (GraphicsDevice.IsOpenGLES2 && indexBufferBinding.Is32Bit)
throw new PlatformNotSupportedException("32 bits index buffer are not supported on OpenGL ES 2.0");
indexBufferOffset = (indexBufferId == 0 ? indexBufferBinding.Buffer.StagingData : IntPtr.Zero) +
indexBufferBinding.Offset;
#else
indexBufferOffset = (IntPtr)indexBufferBinding.Offset;
#endif
drawElementsType = indexBufferBinding.Is32Bit ? DrawElementsType.UnsignedInt : DrawElementsType.UnsignedShort;
indexElementSize = indexBufferBinding.Is32Bit ? 4 : 2;
}
// If we have a signature, we can already pre-create the instance
if (preferredInputSignature != null)
{
preferredInstance = GetInstance(preferredInputSignature);
}
currentShaderSignature = preferredInputSignature;
currentInstance = preferredInstance;
}
private VertexArrayObjectInstance GetInstance(EffectInputSignature effectInputSignature)
{
VertexArrayObjectInstance inputLayout;
lock (registeredInstances)
{
if (!registeredInstances.TryGetValue(effectInputSignature, out inputLayout))
{
inputLayout = new VertexArrayObjectInstance(GraphicsDevice, effectInputSignature, vertexAttribs, indexBufferId);
registeredInstances.Add(effectInputSignature, inputLayout);
}
}
return inputLayout;
}
internal void Apply(EffectInputSignature effectInputSignature)
{
if (effectInputSignature == null) throw new ArgumentNullException("effectInputSignature");
// Optimization: If the current VAO and shader signature was previously used, we can use it directly without asking for a proper instance
if (RequiresApply(effectInputSignature))
{
currentInstance = ReferenceEquals(preferredInputSignature, effectInputSignature)
? preferredInstance
: GetInstance(effectInputSignature);
currentShaderSignature = effectInputSignature;
}
currentInstance.Apply(GraphicsDevice);
}
